gcc/configure.ac

   1 # configure.ac for GCC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright (C) 1997-2016 Free Software Foundation, Inc.
   5
   6 #This file is part of GCC.
   7
   8 #GCC is free software; you can redistribute it and/or modify it under
   9 #the terms of the GNU General Public License as published by the Free
  10 #Software Foundation; either version 3, or (at your option) any later
  11 #version.
  12
  13 #GCC is distributed in the hope that it will be useful, but WITHOUT
  14 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 #FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 #for more details.
  17
  18 #You should have received a copy of the GNU General Public License
  19 #along with GCC; see the file COPYING3.  If not see
  20 #<http://www.gnu.org/licenses/>.
  21
  22 # --------------------------------
  23 # Initialization and sanity checks
  24 # --------------------------------
  25
  26 AC_PREREQ(2.64)
  27 AC_INIT
  28 AC_CONFIG_SRCDIR(tree.c)
  29 AC_CONFIG_HEADER(auto-host.h:config.in)
  30
  31 gcc_version=`cat $srcdir/BASE-VER`
  32
  33 # Determine the host, build, and target systems
  34 AC_CANONICAL_BUILD
  35 AC_CANONICAL_HOST
  36 AC_CANONICAL_TARGET
  37
  38 # Determine the noncanonical target name, for directory use.
  39 ACX_NONCANONICAL_TARGET
  40
  41 # Used for constructing correct paths for offload compilers.
  42 real_target_noncanonical=${target_noncanonical}
  43 accel_dir_suffix=
  44
  45 # Determine the target- and build-specific subdirectories
  46 GCC_TOPLEV_SUBDIRS
  47
  48 # Set program_transform_name
  49 AC_ARG_PROGRAM
  50
  51 # Check for bogus environment variables.
  52 # Test if LIBRARY_PATH contains the notation for the current directory
  53 # since this would lead to problems installing/building glibc.
  54 # LIBRARY_PATH contains the current directory if one of the following
  55 # is true:
  56 # - one of the terminals (":" and ";") is the first or last sign
  57 # - two terminals occur directly after each other
  58 # - the path contains an element with a dot in it
  59 AC_MSG_CHECKING(LIBRARY_PATH variable)
  60 changequote(,)dnl
  61 case ${LIBRARY_PATH} in
  62   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  63     library_path_setting="contains current directory"
  64     ;;
  65   *)
  66     library_path_setting="ok"
  67     ;;
  68 esac
  69 changequote([,])dnl
  70 AC_MSG_RESULT($library_path_setting)
  71 if test "$library_path_setting" != "ok"; then
  72 AC_MSG_ERROR([
  73 *** LIBRARY_PATH shouldn't contain the current directory when
  74 *** building gcc. Please change the environment variable
  75 *** and run configure again.])
  76 fi
  77
  78 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  79 # since this would lead to problems installing/building glibc.
  80 # GCC_EXEC_PREFIX contains the current directory if one of the following
  81 # is true:
  82 # - one of the terminals (":" and ";") is the first or last sign
  83 # - two terminals occur directly after each other
  84 # - the path contains an element with a dot in it
  85 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  86 changequote(,)dnl
  87 case ${GCC_EXEC_PREFIX} in
  88   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  89     gcc_exec_prefix_setting="contains current directory"
  90     ;;
  91   *)
  92     gcc_exec_prefix_setting="ok"
  93     ;;
  94 esac
  95 changequote([,])dnl
  96 AC_MSG_RESULT($gcc_exec_prefix_setting)
  97 if test "$gcc_exec_prefix_setting" != "ok"; then
  98 AC_MSG_ERROR([
  99 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
 100 *** building gcc. Please change the environment variable
 101 *** and run configure again.])
 102 fi
 103
 104 # -----------
 105 # Directories
 106 # -----------
 107
 108 # Specify the local prefix
 109 local_prefix=
 110 AC_ARG_WITH(local-prefix,
 111 [AS_HELP_STRING([--with-local-prefix=DIR],
 112                 [specifies directory to put local include])],
 113 [case "${withval}" in
 114 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 115 no)     ;;
 116 *)      local_prefix=$with_local_prefix ;;
 117 esac])
 118
 119 # Default local prefix if it is empty
 120 if test x$local_prefix = x; then
 121         local_prefix=/usr/local
 122 fi
 123
 124 AC_ARG_WITH([native-system-header-dir],
 125   [  --with-native-system-header-dir=dir
 126                           use dir as the directory to look for standard
 127                           system header files in.  Defaults to /usr/include.],
 128 [
 129  case ${with_native_system_header_dir} in
 130  yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;;
 131  /* | [[A-Za-z]]:[[\\/]]*) ;;
 132  *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;;
 133  esac
 134  configured_native_system_header_dir="${withval}"
 135 ], [configured_native_system_header_dir=])
 136
 137 AC_ARG_WITH(build-sysroot,
 138   [AS_HELP_STRING([--with-build-sysroot=sysroot],
 139                   [use sysroot as the system root during the build])],
 140   [if test x"$withval" != x ; then
 141      SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval"
 142    fi],
 143   [SYSROOT_CFLAGS_FOR_TARGET=])
 144 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
 145
 146 if test "x$prefix" = xNONE; then
 147  test_prefix=/usr/local
 148 else
 149  test_prefix=$prefix
 150 fi
 151 if test "x$exec_prefix" = xNONE; then
 152  test_exec_prefix=$test_prefix
 153 else
 154  test_exec_prefix=$exec_prefix
 155 fi
 156
 157 AC_ARG_WITH(sysroot,
 158 [AS_HELP_STRING([[--with-sysroot[=DIR]]],
 159                 [search for usr/lib, usr/include, et al, within DIR])],
 160 [
 161  case ${with_sysroot} in
 162  /) ;;
 163  */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;;
 164  esac
 165  case ${with_sysroot} in
 166  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
 167  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 168  esac
 169
 170  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 171  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
 172
 173  case ${TARGET_SYSTEM_ROOT} in
 174  "${test_prefix}"|"${test_prefix}/"*|\
 175  "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
 176  '${prefix}'|'${prefix}/'*|\
 177  '${exec_prefix}'|'${exec_prefix}/'*)
 178    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 179    TARGET_SYSTEM_ROOT_DEFINE="$t"
 180    ;;
 181  esac
 182 ], [
 183  TARGET_SYSTEM_ROOT=
 184  TARGET_SYSTEM_ROOT_DEFINE=
 185  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 186 ])
 187 AC_SUBST(TARGET_SYSTEM_ROOT)
 188 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 189 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 190
 191 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 192 # passed in by the toplevel make and thus we'd get different behavior
 193 # depending on where we built the sources.
 194 gcc_gxx_include_dir=
 195 # Specify the g++ header file directory
 196 AC_ARG_WITH(gxx-include-dir,
 197 [AS_HELP_STRING([--with-gxx-include-dir=DIR],
 198                 [specifies directory to put g++ header files])],
 199 [case "${withval}" in
 200 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 201 no)     ;;
 202 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 203 esac])
 204
 205 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
 206 if test x${gcc_gxx_include_dir} = x; then
 207   if test x${enable_version_specific_runtime_libs} = xyes; then
 208     gcc_gxx_include_dir='${libsubdir}/include/c++'
 209   else
 210     libstdcxx_incdir='include/c++/$(version)'
 211     if test x$host != x$target; then
 212        libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
 213     fi
 214     gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
 215   fi
 216 fi
 217
 218 gcc_gxx_include_dir_add_sysroot=0
 219 if test "${with_sysroot+set}" = set; then
 220   gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'`
 221   if test "${gcc_gxx_without_sysroot}"; then
 222     if test x${with_sysroot} != x/; then
 223       gcc_gxx_include_dir="${gcc_gxx_without_sysroot}"
 224     fi
 225     gcc_gxx_include_dir_add_sysroot=1
 226   fi
 227 fi
 228
 229 AC_ARG_WITH(cpp_install_dir,
 230 [AC_HELP_STRING([--with-cpp-install-dir=DIR],
 231                 [install the user visible C preprocessor in DIR
 232                  (relative to PREFIX) as well as PREFIX/bin])],
 233 [if test x$withval = xyes; then
 234   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 235 elif test x$withval != xno; then
 236   cpp_install_dir=$withval
 237 fi])
 238
 239 # We would like to our source tree to be readonly.  However when releases or
 240 # pre-releases are generated, the flex/bison generated files as well as the
 241 # various formats of manuals need to be included along with the rest of the
 242 # sources.  Therefore we have --enable-generated-files-in-srcdir to do
 243 # just that.
 244
 245 AC_MSG_CHECKING([whether to place generated files in the source directory])
 246   dnl generated-files-in-srcdir is disabled by default
 247   AC_ARG_ENABLE(generated-files-in-srcdir,
 248     [AS_HELP_STRING([--enable-generated-files-in-srcdir],
 249                     [put copies of generated files in source dir
 250                      intended for creating source tarballs for users
 251                      without texinfo bison or flex])],
 252       generated_files_in_srcdir=$enableval,
 253       generated_files_in_srcdir=no)
 254
 255 AC_MSG_RESULT($generated_files_in_srcdir)
 256
 257 if test "$generated_files_in_srcdir" = "yes"; then
 258   GENINSRC=''
 259 else
 260   GENINSRC='#'
 261 fi
 262 AC_SUBST(GENINSRC)
 263
 264 # -------------------
 265 # Find default linker
 266 # -------------------
 267
 268 # With GNU ld
 269 AC_ARG_WITH(gnu-ld,
 270 [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])],
 271 gnu_ld_flag="$with_gnu_ld",
 272 gnu_ld_flag=no)
 273
 274 # With pre-defined ld
 275 AC_ARG_WITH(ld,
 276 [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])],
 277 DEFAULT_LINKER="$with_ld")
 278 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 279   if test ! -x "$DEFAULT_LINKER"; then
 280     AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 281   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 282     gnu_ld_flag=yes
 283   fi
 284   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 285         [Define to enable the use of a default linker.])
 286 fi
 287
 288 AC_MSG_CHECKING([whether a default linker was specified])
 289 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 290   if test x"$gnu_ld_flag" = x"no"; then
 291     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 292   else
 293     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 294   fi
 295 else
 296   AC_MSG_RESULT(no)
 297 fi
 298
 299 # With demangler in GNU ld
 300 AC_ARG_WITH(demangler-in-ld,
 301 [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])],
 302 demangler_in_ld="$with_demangler_in_ld",
 303 demangler_in_ld=yes)
 304
 305 # ----------------------
 306 # Find default assembler
 307 # ----------------------
 308
 309 # With GNU as
 310 AC_ARG_WITH(gnu-as,
 311 [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])],
 312 gas_flag="$with_gnu_as",
 313 gas_flag=no)
 314
 315 AC_ARG_WITH(as,
 316 [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])],
 317 DEFAULT_ASSEMBLER="$with_as")
 318 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 319   if test ! -x "$DEFAULT_ASSEMBLER"; then
 320     AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 321   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 322     gas_flag=yes
 323   fi
 324   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 325         [Define to enable the use of a default assembler.])
 326 fi
 327
 328 AC_MSG_CHECKING([whether a default assembler was specified])
 329 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 330   if test x"$gas_flag" = x"no"; then
 331     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 332   else
 333     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 334   fi
 335 else
 336   AC_MSG_RESULT(no)
 337 fi
 338
 339 # ---------------
 340 # Find C compiler
 341 # ---------------
 342
 343 # If a non-executable a.out is present (e.g. created by GNU as above even if
 344 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
 345 # file, even when creating an executable, so an execution test fails.
 346 # Remove possible default executable files to avoid this.
 347 #
 348 # FIXME: This really belongs into AC_PROG_CC and can be removed once
 349 # Autoconf includes it.
 350 rm -f a.out a.exe b.out
 351
 352 # Find the native compiler
 353 AC_PROG_CC
 354 AC_PROG_CXX
 355 ACX_PROG_GNAT([-I"$srcdir"/ada])
 356
 357 # Do configure tests with the C++ compiler, since that's what we build with.
 358 AC_LANG(C++)
 359
 360 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
 361 # optimizations to be activated explicitly by the toplevel.
 362 case "$CC" in
 363   */prev-gcc/xgcc*) ;;
 364   *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[       ]]//" -e "s/-O[[gs]][[  ]]//" -e "s/-O[[0-9]]*[[        ]]//" `
 365      CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[   ]]//" -e "s/-O[[gs]][[  ]]//" -e "s/-O[[0-9]]*[[        ]]//" ` ;;
 366 esac
 367 AC_SUBST(CFLAGS)
 368 AC_SUBST(CXXFLAGS)
 369
 370 # Determine PICFLAG for target gnatlib.
 371 GCC_PICFLAG_FOR_TARGET
 372 AC_SUBST(PICFLAG_FOR_TARGET)
 373
 374 # -------------------------
 375 # Check C compiler features
 376 # -------------------------
 377
 378 AC_USE_SYSTEM_EXTENSIONS
 379 AC_PROG_CPP
 380 AC_C_INLINE
 381
 382 AC_SYS_LARGEFILE
 383
 384 # sizeof(char) is 1 by definition.
 385 AC_CHECK_SIZEOF(void *)
 386 AC_CHECK_SIZEOF(short)
 387 AC_CHECK_SIZEOF(int)
 388 AC_CHECK_SIZEOF(long)
 389 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
 390 GCC_STDINT_TYPES
 391 if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then
 392   AC_MSG_ERROR([uint64_t or int64_t not found])
 393 fi
 394
 395 # check what underlying integer type int64_t uses
 396 AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
 397 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 398 #ifdef HAVE_STDINT_H
 399 #include <stdint.h>
 400 #endif
 401 template <typename T> struct X { };
 402 template <>
 403 struct X<long> { typedef long t; };
 404 ]], [[X<int64_t>::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])])
 405 if test "$ac_cv_int64_t_type" = "long"; then
 406   AC_DEFINE(INT64_T_IS_LONG, 1,
 407   [Define if int64_t uses long as underlying type.])
 408 else
 409 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 410 #ifdef HAVE_STDINT_H
 411 #include <stdint.h>
 412 #endif
 413 template <typename T> struct X { };
 414 template <>
 415 struct X<long long> { typedef long long t; };
 416 ]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
 417 fi
 418
 419 # Check whether compiler is affected by placement new aliasing bug (PR 29286).
 420 # If the host compiler is affected by the bug, and we build with optimization
 421 # enabled (which happens e.g. when cross-compiling), the pool allocator may
 422 # get miscompiled.  Use -fno-strict-aliasing to work around this problem.
 423 # Since there is no reliable feature check for the presence of this bug,
 424 # we simply use a GCC version number check.  (This should never trigger for
 425 # stages 2 or 3 of a native bootstrap.)
 426 aliasing_flags=
 427 if test "$GCC" = yes; then
 428   saved_CXXFLAGS="$CXXFLAGS"
 429
 430   # The following test compilation will succeed if and only if $CXX accepts
 431   # -fno-strict-aliasing *and* is older than GCC 4.3.
 432   CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
 433   AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug])
 434   AC_COMPILE_IFELSE([
 435 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
 436 #error compiler not affected by placement new aliasing bug
 437 #endif
 438 ],
 439     [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'],
 440     [AC_MSG_RESULT([no])])
 441
 442   CXXFLAGS="$saved_CXXFLAGS"
 443 fi
 444 AC_SUBST(aliasing_flags)
 445
 446
 447
 448 # ---------------------
 449 # Warnings and checking
 450 # ---------------------
 451
 452 # Check $CC warning features (if it's GCC).
 453 # We want to use -pedantic, but we don't want warnings about
 454 # * 'long long'
 455 # * variadic macros
 456 # * overlong strings
 457 # * C++11 narrowing conversions in { }
 458 # So, we only use -pedantic if we can disable those warnings.
 459
 460 # In stage 1, disable -Wformat warnings from old GCCs about new % codes
 461 AC_ARG_ENABLE(build-format-warnings,
 462   AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]),
 463   [],[enable_build_format_warnings=yes])
 464 AS_IF([test $enable_build_format_warnings = no],
 465       [wf_opt=-Wno-format],[wf_opt=])
 466 ACX_PROG_CXX_WARNING_OPTS(
 467         m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual $wf_opt])), [loose_warn])
 468 ACX_PROG_CC_WARNING_OPTS(
 469         m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])),
 470         [c_loose_warn])
 471 ACX_PROG_CXX_WARNING_OPTS(
 472         m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
 473 ACX_PROG_CXX_WARNING_OPTS(
 474         m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
 475 ACX_PROG_CC_WARNING_OPTS(
 476         m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
 477 ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
 478         m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
 479                        [-Wno-overlength-strings])), [strict_warn])
 480 ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn])
 481
 482 # The above macros do nothing if the compiler is not GCC.  However, the
 483 # Makefile has more goo to add other flags, so these variables are used
 484 # to enable warnings only for GCC.
 485 warn_cflags=
 486 warn_cxxflags=
 487 if test "x$GCC" = "xyes"; then
 488   warn_cflags='$(GCC_WARN_CFLAGS)'
 489   warn_cxxflags='$(GCC_WARN_CXXFLAGS)'
 490 fi
 491 AC_SUBST(warn_cflags)
 492 AC_SUBST(warn_cxxflags)
 493
 494 # Disable exceptions and RTTI if building with g++
 495 ACX_PROG_CC_WARNING_OPTS(
 496         m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])),
 497                        [noexception_flags])
 498
 499 # Enable expensive internal checks
 500 is_release=
 501 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
 502   is_release=yes
 503 fi
 504
 505 AC_ARG_ENABLE(checking,
 506 [AS_HELP_STRING([[--enable-checking[=LIST]]],
 507                 [enable expensive run-time checks.  With LIST,
 508                  enable only specific categories of checks.
 509                  Categories are: yes,no,all,none,release.
 510                  Flags are: assert,df,fold,gc,gcac,gimple,misc,
 511                  rtlflag,rtl,runtime,tree,valgrind,types])],
 512 [ac_checking_flags="${enableval}"],[
 513 # Determine the default checks.
 514 if test x$is_release = x ; then
 515   ac_checking_flags=yes
 516 else
 517   ac_checking_flags=release
 518 fi])
 519 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 520 for check in release $ac_checking_flags
 521 do
 522         case $check in
 523         # these set all the flags to specific states
 524         yes)            ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
 525                         ac_fold_checking= ; ac_gc_checking=1 ;
 526                         ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
 527                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 528                         ac_tree_checking=1 ; ac_valgrind_checking= ;
 529                         ac_types_checking=1 ;;
 530         no|none)        ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
 531                         ac_fold_checking= ; ac_gc_checking= ;
 532                         ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
 533                         ac_rtlflag_checking= ; ac_runtime_checking= ;
 534                         ac_tree_checking= ; ac_valgrind_checking= ;
 535                         ac_types_checking= ;;
 536         all)            ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
 537                         ac_fold_checking=1 ; ac_gc_checking=1 ;
 538                         ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
 539                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 540                         ac_tree_checking=1 ; ac_valgrind_checking= ;
 541                         ac_types_checking=1 ;;
 542         release)        ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
 543                         ac_fold_checking= ; ac_gc_checking= ;
 544                         ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
 545                         ac_rtlflag_checking= ; ac_runtime_checking=1 ;
 546                         ac_tree_checking= ; ac_valgrind_checking= ;
 547                         ac_types_checking= ;;
 548         # these enable particular checks
 549         assert)         ac_assert_checking=1 ;;
 550         df)             ac_df_checking=1 ;;
 551         fold)           ac_fold_checking=1 ;;
 552         gc)             ac_gc_checking=1 ;;
 553         gcac)           ac_gc_always_collect=1 ;;
 554         gimple)         ac_gimple_checking=1 ;;
 555         misc)           ac_checking=1 ;;
 556         rtl)            ac_rtl_checking=1 ;;
 557         rtlflag)        ac_rtlflag_checking=1 ;;
 558         runtime)        ac_runtime_checking=1 ;;
 559         tree)           ac_tree_checking=1 ;;
 560         types)          ac_types_checking=1 ;;
 561         valgrind)       ac_valgrind_checking=1 ;;
 562         *)      AC_MSG_ERROR(unknown check category $check) ;;
 563         esac
 564 done
 565 IFS="$ac_save_IFS"
 566
 567 nocommon_flag=""
 568 if test x$ac_checking != x ; then
 569   AC_DEFINE(CHECKING_P, 1,
 570 [Define to 1 if you want more run-time sanity checks.  This one gets a grab
 571    bag of miscellaneous but relatively cheap checks.])
 572   nocommon_flag=-fno-common
 573 else
 574   AC_DEFINE(CHECKING_P, 0)
 575 fi
 576 AC_SUBST(nocommon_flag)
 577 if test x$ac_df_checking != x ; then
 578   AC_DEFINE(ENABLE_DF_CHECKING, 1,
 579 [Define if you want more run-time sanity checks for dataflow.])
 580 fi
 581 if test x$ac_assert_checking != x ; then
 582   AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
 583 [Define if you want assertions enabled.  This is a cheap check.])
 584 fi
 585 if test x$ac_gimple_checking != x ; then
 586   AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
 587 [Define if you want operations on GIMPLE (the basic data structure of
 588 the high-level optimizers) to be checked for dynamic type safety at
 589 runtime.  This is moderately expensive.])
 590 fi
 591 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
 592 if test x$ac_runtime_checking != x ; then
 593   AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
 594 [Define if you want runtime assertions enabled.  This is a cheap check.])
 595 fi
 596 if test x$ac_tree_checking != x ; then
 597   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 598 [Define if you want all operations on trees (the basic data
 599    structure of the front ends) to be checked for dynamic type safety
 600    at runtime.  This is moderately expensive.
 601    ])
 602   TREECHECKING=yes
 603 fi
 604 if test x$ac_types_checking != x ; then
 605   AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
 606 [Define if you want all gimple types to be verified after gimplifiation.
 607    This is cheap.
 608    ])
 609 fi
 610 AC_SUBST(TREECHECKING)
 611 if test x$ac_rtl_checking != x ; then
 612   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 613 [Define if you want all operations on RTL (the basic data structure
 614    of the optimizer and back end) to be checked for dynamic type safety
 615    at runtime.  This is quite expensive.])
 616 fi
 617 if test x$ac_rtlflag_checking != x ; then
 618   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 619 [Define if you want RTL flag accesses to be checked against the RTL
 620    codes that are supported for each access macro.  This is relatively
 621    cheap.])
 622 fi
 623 if test x$ac_gc_checking != x ; then
 624   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 625 [Define if you want the garbage collector to do object poisoning and
 626    other memory allocation checks.  This is quite expensive.])
 627 fi
 628 if test x$ac_gc_always_collect != x ; then
 629   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 630 [Define if you want the garbage collector to operate in maximally
 631    paranoid mode, validating the entire heap and collecting garbage at
 632    every opportunity.  This is extremely expensive.])
 633 fi
 634 if test x$ac_fold_checking != x ; then
 635   AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
 636 [Define if you want fold checked that it never destructs its argument.
 637    This is quite expensive.])
 638 fi
 639 valgrind_path_defines=
 640 valgrind_command=
 641
 642 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
 643 dnl # an if statement.  This was the source of very frustrating bugs
 644 dnl # in converting to autoconf 2.5x!
 645 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 646
 647 # It is certainly possible that there's valgrind but no valgrind.h.
 648 # GCC relies on making annotations so we must have both.
 649 AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
 650 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 651   [[#include <valgrind/memcheck.h>
 652 #ifndef VALGRIND_DISCARD
 653 #error VALGRIND_DISCARD not defined
 654 #endif]])],
 655   [gcc_cv_header_valgrind_memcheck_h=yes],
 656   [gcc_cv_header_valgrind_memcheck_h=no])
 657 AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
 658 AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 659 AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 660   [[#include <memcheck.h>
 661 #ifndef VALGRIND_DISCARD
 662 #error VALGRIND_DISCARD not defined
 663 #endif]])],
 664   [gcc_cv_header_memcheck_h=yes],
 665   [gcc_cv_header_memcheck_h=no])
 666 AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 667 if test $gcc_cv_header_valgrind_memcheck_h = yes; then
 668   AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
 669         [Define if valgrind's valgrind/memcheck.h header is installed.])
 670 fi
 671 if test $gcc_cv_header_memcheck_h = yes; then
 672   AC_DEFINE(HAVE_MEMCHECK_H, 1,
 673         [Define if valgrind's memcheck.h header is installed.])
 674 fi
 675
 676 if test x$ac_valgrind_checking != x ; then
 677   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 678         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 679   if test "x$valgrind_path" = "x" \
 680     || (test $have_valgrind_h = no \
 681         && test $gcc_cv_header_memcheck_h = no \
 682         && test $gcc_cv_header_valgrind_memcheck_h = no); then
 683         AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
 684   fi
 685   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 686   valgrind_command="$valgrind_path -q"
 687   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 688 [Define if you want to run subprograms and generated programs
 689    through valgrind (a memory checker).  This is extremely expensive.])
 690 fi
 691 AC_SUBST(valgrind_path_defines)
 692 AC_SUBST(valgrind_command)
 693
 694 # Enable code coverage collection
 695 AC_ARG_ENABLE(coverage,
 696 [AS_HELP_STRING([[--enable-coverage[=LEVEL]]],
 697                 [enable compiler's code coverage collection.
 698                  Use to measure compiler performance and locate
 699                  unused parts of the compiler. With LEVEL, specify
 700                  optimization. Values are opt, noopt,
 701                  default is noopt])],
 702 [case "${enableval}" in
 703   yes|noopt)
 704     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
 705     ;;
 706   opt)
 707     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
 708     ;;
 709   no)
 710     # a.k.a. --disable-coverage
 711     coverage_flags=""
 712     ;;
 713   *)
 714     AC_MSG_ERROR(unknown coverage setting $enableval)
 715     ;;
 716 esac],
 717 [coverage_flags=""])
 718 AC_SUBST(coverage_flags)
 719
 720 AC_ARG_ENABLE(gather-detailed-mem-stats,
 721 [AS_HELP_STRING([--enable-gather-detailed-mem-stats],
 722                 [enable detailed memory allocation stats gathering])], [],
 723 [enable_gather_detailed_mem_stats=no])
 724 gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi`
 725 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
 726 [Define to enable detailed memory allocation stats gathering.])
 727
 728 AC_ARG_ENABLE(valgrind-annotations,
 729 [AS_HELP_STRING([--enable-valgrind-annotations],
 730                 [enable valgrind runtime interaction])], [],
 731 [enable_valgrind_annotations=no])
 732 if test x$enable_valgrind_annotations != xno \
 733     || test x$ac_valgrind_checking != x; then
 734   if (test $have_valgrind_h = no \
 735       && test $gcc_cv_header_memcheck_h = no \
 736       && test $gcc_cv_header_valgrind_memcheck_h = no); then
 737     AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
 738   fi
 739   AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
 740 [Define to get calls to the valgrind runtime enabled.])
 741 fi
 742
 743 # -------------------------------
 744 # Miscenalleous configure options
 745 # -------------------------------
 746
 747 # With stabs
 748 AC_ARG_WITH(stabs,
 749 [AS_HELP_STRING([--with-stabs],
 750                 [arrange to use stabs instead of host debug format])],
 751 stabs="$with_stabs",
 752 stabs=no)
 753
 754 # Determine whether or not multilibs are enabled.
 755 AC_ARG_ENABLE(multilib,
 756 [AS_HELP_STRING([--enable-multilib],
 757                 [enable library support for multiple ABIs])],
 758 [], [enable_multilib=yes])
 759 AC_SUBST(enable_multilib)
 760
 761 # Determine whether or not multiarch is enabled.
 762 AC_ARG_ENABLE(multiarch,
 763 [AS_HELP_STRING([--enable-multiarch],
 764                 [enable support for multiarch paths])],
 765 [case "${enableval}" in
 766 yes|no|auto) enable_multiarch=$enableval;;
 767 *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;;
 768 esac], [enable_multiarch=auto])
 769 if test x${enable_multiarch} = xauto; then
 770   if test x${with_native_system_header_dir} != x; then
 771     ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)"
 772     enable_multiarch=no
 773   fi
 774   if test x$host != x$target && test "x$with_sysroot" = x; then
 775     ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)"
 776     enable_multiarch=no
 777   fi
 778 fi
 779 AC_MSG_CHECKING(for multiarch configuration)
 780 AC_SUBST(enable_multiarch)
 781 AC_MSG_RESULT($enable_multiarch$ma_msg_suffix)
 782
 783 # needed for setting the multiarch name for soft-float/hard-float ABIs
 784 AC_SUBST(with_cpu)
 785 AC_SUBST(with_float)
 786
 787 # Enable __cxa_atexit for C++.
 788 AC_ARG_ENABLE(__cxa_atexit,
 789 [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])],
 790 [], [])
 791
 792 # Enable C extension for decimal float if target supports it.
 793 GCC_AC_ENABLE_DECIMAL_FLOAT([$target])
 794
 795 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
 796 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
 797 [Define to 1 to enable decimal float extension to C.])
 798
 799 # Use default_decimal_float for dependency.
 800 enable_decimal_float=$default_decimal_float
 801
 802 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
 803 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
 804 [Define to 1 to specify that we are using the BID decimal floating
 805 point format instead of DPD])
 806
 807 # Enable C extension for fixed-point arithmetic.
 808 AC_ARG_ENABLE(fixed-point,
 809 [AS_HELP_STRING([--enable-fixed-point],
 810                 [enable fixed-point arithmetic extension to C])],
 811 [],
 812 [
 813   case $target in
 814     arm*)
 815       enable_fixed_point=yes
 816       ;;
 817
 818     mips*-*-*)
 819       enable_fixed_point=yes
 820       ;;
 821     *)
 822       AC_MSG_WARN([fixed-point is not supported for this target, ignored])
 823       enable_fixed_point=no
 824       ;;
 825   esac
 826 ])
 827 AC_SUBST(enable_fixed_point)
 828
 829 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
 830 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
 831 [Define to 1 to enable fixed-point arithmetic extension to C.])
 832
 833 # Enable threads
 834 # Pass with no value to take the default
 835 # Pass with a value to specify a thread package
 836 AC_ARG_ENABLE(threads,
 837 [AS_HELP_STRING([[--enable-threads[=LIB]]],
 838                 [enable thread usage for target GCC,
 839                  using LIB thread package])],,
 840 [enable_threads=''])
 841
 842 AC_ARG_ENABLE(tls,
 843 [AS_HELP_STRING([--enable-tls],
 844                 [enable or disable generation of tls code
 845                  overriding the assembler check for tls support])],
 846 [
 847   case $enable_tls in
 848     yes | no) ;;
 849     *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
 850 Valid choices are 'yes' and 'no'.]) ;;
 851   esac
 852 ], [enable_tls=''])
 853
 854 AC_ARG_ENABLE(objc-gc,
 855 [AS_HELP_STRING([--enable-objc-gc],
 856                 [enable the use of Boehm's garbage collector with
 857                  the GNU Objective-C runtime])],
 858 if test x$enable_objc_gc = xno; then
 859         objc_boehm_gc=''
 860 else
 861         objc_boehm_gc=1
 862 fi,
 863 objc_boehm_gc='')
 864
 865 AC_ARG_WITH(dwarf2,
 866 [AS_HELP_STRING([--with-dwarf2], [force the default debug format to be DWARF 2])],
 867 dwarf2="$with_dwarf2",
 868 dwarf2=no)
 869
 870 AC_ARG_ENABLE(shared,
 871 [AS_HELP_STRING([--disable-shared], [don't provide a shared libgcc])],
 872 [
 873   case $enable_shared in
 874   yes | no) ;;
 875   *)
 876     enable_shared=no
 877     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 878     for pkg in $enableval; do
 879       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 880         enable_shared=yes
 881       fi
 882     done
 883     IFS="$ac_save_ifs"
 884     ;;
 885   esac
 886 ], [enable_shared=yes])
 887 AC_SUBST(enable_shared)
 888
 889 AC_ARG_WITH(specs,
 890   [AS_HELP_STRING([--with-specs=SPECS],
 891                   [add SPECS to driver command-line processing])],
 892   [CONFIGURE_SPECS=$withval],
 893   [CONFIGURE_SPECS=]
 894 )
 895 AC_SUBST(CONFIGURE_SPECS)
 896
 897 ACX_PKGVERSION([GCC])
 898 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
 899
 900 # Sanity check enable_languages in case someone does not run the toplevel
 901 # configure # script.
 902 AC_ARG_ENABLE(languages,
 903 [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])],
 904 [case ,${enable_languages}, in
 905        ,,|,yes,)
 906                 # go safe -- we cannot be much sure without the toplevel
 907                 # configure's
 908                 # analysis of which target libs are present and usable
 909                 enable_languages=c
 910                 ;;
 911          *,all,*)
 912                 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
 913                 ;;
 914         *,c,*)
 915                 ;;
 916         *)
 917                 enable_languages=c,${enable_languages}
 918                 ;;
 919 esac],
 920 [enable_languages=c])
 921
 922 if test x"$enable_as_accelerator_for" != x; then
 923   AC_DEFINE(ACCEL_COMPILER, 1,
 924     [Define if this compiler should be built as the offload target compiler.])
 925   enable_as_accelerator=yes
 926   case "${target}" in
 927     *-intelmicemul-*)
 928       # In this case we expect offload compiler to be built as native, so we
 929       # need to rename the driver to avoid clashes with host's drivers.
 930       program_transform_name="s&^&${target}-&" ;;
 931   esac
 932   sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#"
 933   program_transform_name=`echo $program_transform_name | sed $sedscript`
 934   accel_dir_suffix=/accel/${target_noncanonical}
 935   real_target_noncanonical=${enable_as_accelerator_for}
 936 fi
 937 AC_SUBST(enable_as_accelerator)
 938 AC_SUBST(real_target_noncanonical)
 939 AC_SUBST(accel_dir_suffix)
 940
 941 for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do
 942   tgt=`echo $tgt | sed 's/=.*//'`
 943   if test x"$offload_targets" = x; then
 944     offload_targets=$tgt
 945   else
 946     offload_targets="$offload_targets,$tgt"
 947   fi
 948 done
 949 AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets",
 950   [Define to offload targets, separated by commas.])
 951 if test x"$offload_targets" != x; then
 952   AC_DEFINE(ENABLE_OFFLOADING, 1,
 953     [Define this to enable support for offloading.])
 954 else
 955   AC_DEFINE(ENABLE_OFFLOADING, 0,
 956     [Define this to enable support for offloading.])
 957 fi
 958
 959 AC_ARG_WITH(multilib-list,
 960 [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])],
 961 :,
 962 with_multilib_list=default)
 963
 964 # -------------------------
 965 # Checks for other programs
 966 # -------------------------
 967
 968 AC_PROG_MAKE_SET
 969
 970 # Find some useful tools
 971 AC_PROG_AWK
 972 # We need awk to create options.c and options.h.
 973 # Bail out if it's missing.
 974 case ${AWK} in
 975   "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
 976 esac
 977
 978 gcc_AC_PROG_LN_S
 979 ACX_PROG_LN($LN_S)
 980 AC_PROG_RANLIB
 981 ranlib_flags=""
 982 AC_SUBST(ranlib_flags)
 983
 984 gcc_AC_PROG_INSTALL
 985
 986 # See if cmp has --ignore-initial.
 987 gcc_AC_PROG_CMP_IGNORE_INITIAL
 988
 989 # See if we have the mktemp command.
 990 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 991
 992 # See if makeinfo has been installed and is modern enough
 993 # that we can use it.
 994 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 995   [GNU texinfo.* \([0-9][0-9.]*\)],
 996   [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
 997 if test $gcc_cv_prog_makeinfo_modern = no; then
 998   AC_MSG_WARN([
 999 *** Makeinfo is missing or too old.
1000 *** Info documentation will not be built.])
1001   BUILD_INFO=
1002 else
1003   BUILD_INFO=info
1004 fi
1005 AC_SUBST(BUILD_INFO)
1006
1007 # Is pod2man recent enough to regenerate manpages?
1008 AC_MSG_CHECKING([for recent Pod::Man])
1009 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
1010   AC_MSG_RESULT(yes)
1011   GENERATED_MANPAGES=generated-manpages
1012 else
1013   AC_MSG_RESULT(no)
1014   GENERATED_MANPAGES=
1015 fi
1016 AC_SUBST(GENERATED_MANPAGES)
1017
1018 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
1019
1020 # How about lex?
1021 dnl Don't use AC_PROG_LEX; we insist on flex.
1022 dnl LEXLIB is not useful in gcc.
1023 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
1024
1025 # Bison?
1026 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
1027
1028 # Binutils are not build modules, unlike bison/flex/makeinfo.  So we
1029 # check for build == host before using them.
1030
1031 # NM
1032 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
1033   && test -d ../binutils ; then
1034   NM='${objdir}/../binutils/nm-new'
1035 else
1036   AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
1037 fi
1038
1039 # AR
1040 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
1041   && test -d ../binutils ; then
1042   AR='${objdir}/../binutils/ar'
1043 else
1044   AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
1045 fi
1046
1047 # The jit documentation looks better if built with sphinx, but can be
1048 # built with texinfo if sphinx is not available.
1049 # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly.
1050 AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo)
1051
1052 # --------------------
1053 # Checks for C headers
1054 # --------------------
1055
1056 # Need to reject headers which give warnings, so that the -Werror bootstrap
1057 # works later. *sigh*  This needs to come before all header checks.
1058 AC_PROG_CPP_WERROR
1059
1060 AC_HEADER_STDC
1061 AC_HEADER_TIME
1062 ACX_HEADER_STRING
1063 AC_HEADER_SYS_WAIT
1064 AC_HEADER_TIOCGWINSZ
1065 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
1066                  fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \
1067                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
1068                  direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
1069
1070 # Check for thread headers.
1071 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
1072 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
1073
1074 # These tests can't be done till we know if we have limits.h.
1075 gcc_AC_C_CHAR_BIT
1076 AC_C_BIGENDIAN
1077
1078 # ----------------------
1079 # Checks for C++ headers
1080 # ----------------------
1081
1082 dnl Autoconf will give an error in the configure script if there is no
1083 dnl C++ preprocessor.  Hack to prevent that.
1084 m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl
1085 AC_PROG_CXXCPP
1086 m4_popdef([AC_MSG_ERROR])[]dnl
1087
1088 AC_CHECK_HEADERS(unordered_map)
1089 AC_CHECK_HEADERS(tr1/unordered_map)
1090 AC_CHECK_HEADERS(ext/hash_map)
1091
1092 # --------
1093 # Dependency checking.
1094 # --------
1095
1096 ZW_CREATE_DEPDIR
1097 AC_CONFIG_COMMANDS([gccdepdir],[
1098   ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
1099   for lang in $subdirs c-family common
1100   do
1101       ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR
1102   done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
1103
1104 ZW_PROG_COMPILER_DEPENDENCIES([CXX])
1105
1106 # --------
1107 # UNSORTED
1108 # --------
1109
1110
1111 # These libraries may be used by collect2.
1112 # We may need a special search path to get them linked.
1113 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
1114 [save_LIBS="$LIBS"
1115 for libs in '' -lld -lmld \
1116                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
1117                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
1118 do
1119         LIBS="$libs"
1120         AC_TRY_LINK_FUNC(ldopen,
1121                 [gcc_cv_collect2_libs="$libs"; break])
1122 done
1123 LIBS="$save_LIBS"
1124 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
1125 case $gcc_cv_collect2_libs in
1126         "none required")        ;;
1127         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
1128 esac
1129 AC_SUBST(COLLECT2_LIBS)
1130
1131 # When building Ada code on Alpha, we need exc_resume which is usually in
1132 # -lexc.  So test for it.
1133 save_LIBS="$LIBS"
1134 LIBS=
1135 AC_SEARCH_LIBS(exc_resume, exc)
1136 GNAT_LIBEXC="$LIBS"
1137 LIBS="$save_LIBS"
1138 AC_SUBST(GNAT_LIBEXC)
1139
1140 # To support -mcpu=native on Solaris/SPARC, we need libkstat.
1141 save_LIBS="$LIBS"
1142 LIBS=
1143 AC_SEARCH_LIBS(kstat_open, kstat)
1144 EXTRA_GCC_LIBS="$LIBS"
1145 LIBS="$save_LIBS"
1146 AC_SUBST(EXTRA_GCC_LIBS)
1147
1148 # Some systems put ldexp and frexp in libm instead of libc; assume
1149 # they're both in the same place.  jcf-dump needs them.
1150 save_LIBS="$LIBS"
1151 LIBS=
1152 AC_SEARCH_LIBS(ldexp, m)
1153 LDEXP_LIB="$LIBS"
1154 LIBS="$save_LIBS"
1155 AC_SUBST(LDEXP_LIB)
1156
1157 # Use <inttypes.h> only if it exists,
1158 # doesn't clash with <sys/types.h>, declares intmax_t and defines
1159 # PRId64
1160 AC_MSG_CHECKING(for inttypes.h)
1161 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
1162 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
1163 [[#define __STDC_FORMAT_MACROS
1164 #include <sys/types.h>
1165 #include <inttypes.h>]],
1166   [[intmax_t i = -1;
1167 #ifndef PRId64
1168 choke me
1169 #endif]])],
1170   [gcc_cv_header_inttypes_h=yes],
1171   [gcc_cv_header_inttypes_h=no])])
1172 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
1173 if test $gcc_cv_header_inttypes_h = yes; then
1174   AC_DEFINE(HAVE_INTTYPES_H, 1,
1175         [Define if you have a working <inttypes.h> header file.])
1176 fi
1177
1178 dnl Disabled until we have a complete test for buggy enum bitfields.
1179 dnl gcc_AC_C_ENUM_BF_UNSIGNED
1180
1181 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
1182   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
1183   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1184   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1185   putchar_unlocked putc_unlocked)
1186 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
1187         popen sysconf strsignal getrusage nl_langinfo \
1188         gettimeofday mbstowcs wcswidth mmap setlocale \
1189         gcc_UNLOCKED_FUNCS madvise)
1190
1191 if test x$ac_cv_func_mbstowcs = xyes; then
1192   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1193 [    AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1194 int main()
1195 {
1196   mbstowcs(0, "", 0);
1197   return 0;
1198 }]])],
1199     [gcc_cv_func_mbstowcs_works=yes],
1200     [gcc_cv_func_mbstowcs_works=no],
1201     [gcc_cv_func_mbstowcs_works=yes])])
1202   if test x$gcc_cv_func_mbstowcs_works = xyes; then
1203     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1204   [Define this macro if mbstowcs does not crash when its
1205    first argument is NULL.])
1206   fi
1207 fi
1208
1209 AC_CHECK_TYPE(ssize_t, int)
1210 AC_CHECK_TYPE(caddr_t, char *)
1211
1212 GCC_AC_FUNC_MMAP_BLACKLIST
1213
1214 case "${host}" in
1215 *-*-*vms*)
1216   # Under VMS, vfork works very differently than on Unix. The standard test
1217   # won't work, and it isn't easily adaptable. It makes more sense to
1218   # just force it.
1219   ac_cv_func_vfork_works=yes
1220   ;;
1221 esac
1222 AC_FUNC_FORK
1223
1224 AM_ICONV
1225
1226 # Until we have in-tree GNU iconv:
1227 LIBICONV_DEP=
1228 if test -f "$LTLIBICONV"; then
1229   LIBICONV_DEP=$LTLIBICONV
1230 fi
1231 AC_SUBST(LIBICONV_DEP)
1232
1233 AM_LC_MESSAGES
1234
1235 AM_LANGINFO_CODESET
1236
1237 # We will need to find libiberty.h and ansidecl.h
1238 saved_CFLAGS="$CFLAGS"
1239 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1240 saved_CXXFLAGS="$CXXFLAGS"
1241 CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
1242
1243 # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the
1244 # normal autoconf function for these.  But force definition of
1245 # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre
1246 # basename handling in libiberty.h.
1247 AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[
1248 #undef HAVE_DECL_BASENAME
1249 #define HAVE_DECL_BASENAME 1
1250 #include "ansidecl.h"
1251 #include "system.h"])
1252
1253 gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \
1254         madvise stpcpy strnlen strsignal strverscmp \
1255         strtol strtoul strtoll strtoull setenv unsetenv \
1256         errno snprintf vsnprintf vasprintf malloc realloc calloc \
1257         free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
1258 #include "ansidecl.h"
1259 #include "system.h"])
1260
1261 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1262 #include "ansidecl.h"
1263 #include "system.h"
1264 #ifdef HAVE_SYS_RESOURCE_H
1265 #include <sys/resource.h>
1266 #endif
1267 ])
1268
1269 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1270 #include "ansidecl.h"
1271 #include "system.h"
1272 #ifdef HAVE_SYS_RESOURCE_H
1273 #include <sys/resource.h>
1274 #endif
1275 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1276 [Define to `long' if <sys/resource.h> doesn't define.])])
1277
1278 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1279 # FREAD and FWRITE macros.  Fortunately, for GCC's single usage of ldgetname
1280 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1281 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1282 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1283 #include "ansidecl.h"
1284 #include "system.h"
1285 #ifdef HAVE_LDFCN_H
1286 #undef FREAD
1287 #undef FWRITE
1288 #include <ldfcn.h>
1289 #endif
1290 ])
1291
1292 gcc_AC_CHECK_DECLS(times, , ,[
1293 #include "ansidecl.h"
1294 #include "system.h"
1295 #ifdef HAVE_SYS_TIMES_H
1296 #include <sys/times.h>
1297 #endif
1298 ])
1299
1300 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1301 #include "ansidecl.h"
1302 #include "system.h"
1303 #include <signal.h>
1304 ])
1305
1306 # More time-related stuff.
1307 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1308 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1309 #include "ansidecl.h"
1310 #include "system.h"
1311 #ifdef HAVE_SYS_TIMES_H
1312 #include <sys/times.h>
1313 #endif
1314 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1315 if test $ac_cv_struct_tms = yes; then
1316   AC_DEFINE(HAVE_STRUCT_TMS, 1,
1317   [Define if <sys/times.h> defines struct tms.])
1318 fi
1319
1320 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1321 # revisit after autoconf 2.50.
1322 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1323 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1324 #include "ansidecl.h"
1325 #include "system.h"
1326 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1327 if test $gcc_cv_type_clock_t = yes; then
1328   AC_DEFINE(HAVE_CLOCK_T, 1,
1329   [Define if <time.h> defines clock_t.])
1330 fi
1331
1332 # Check if F_SETLKW is supported by fcntl.
1333 AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [
1334 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1335 #include <fcntl.h>]], [[
1336 struct flock fl;
1337 fl.l_whence = 0;
1338 fl.l_start = 0;
1339 fl.l_len = 0;
1340 fl.l_pid = 0;
1341 return fcntl (1, F_SETLKW, &fl);]])],
1342 [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])])
1343 if test $ac_cv_f_setlkw = yes; then
1344   AC_DEFINE(HOST_HAS_F_SETLKW, 1,
1345   [Define if F_SETLKW supported by fcntl.])
1346 fi
1347
1348 # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1349 CFLAGS="$saved_CFLAGS"
1350 CXXFLAGS="$saved_CXXFLAGS"
1351
1352 # mkdir takes a single argument on some systems.
1353 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1354
1355 # File extensions
1356 manext='.1'
1357 objext='.o'
1358 AC_SUBST(manext)
1359 AC_SUBST(objext)
1360
1361 # With Setjmp/Longjmp based exception handling.
1362 AC_ARG_ENABLE(sjlj-exceptions,
1363 [AS_HELP_STRING([--enable-sjlj-exceptions],
1364                 [arrange to use setjmp/longjmp exception handling])],
1365 [case $target in
1366   *-*-hpux10*)
1367     if test $enableval != yes; then
1368       AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1369       enableval=yes
1370     fi
1371     ;;
1372 esac
1373 force_sjlj_exceptions=yes],
1374 [case $target in
1375   *-*-hpux10*)
1376     force_sjlj_exceptions=yes
1377     enableval=yes
1378     ;;
1379   lm32*-*-*)
1380      force_sjlj_exceptions=yes
1381      enableval=yes
1382      ;;
1383   *)
1384     force_sjlj_exceptions=no
1385     ;;
1386 esac])
1387 if test $force_sjlj_exceptions = yes; then
1388   sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1389   AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1390     [Define 0/1 to force the choice for exception handling model.])
1391 fi
1392
1393 # --------------------------------------------------------
1394 # Build, host, and target specific configuration fragments
1395 # --------------------------------------------------------
1396
1397 # Collect build-machine-specific information.
1398 . ${srcdir}/config.build
1399
1400 # Collect host-machine-specific information.
1401 . ${srcdir}/config.host
1402
1403 target_gtfiles=
1404
1405 # Collect target-machine-specific information.
1406 . ${srcdir}/config.gcc
1407
1408 extra_objs="${host_extra_objs} ${extra_objs}"
1409 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1410
1411 # Default the target-machine variables that were not explicitly set.
1412 if test x"$tm_file" = x
1413 then tm_file=$cpu_type/$cpu_type.h; fi
1414
1415 if test x"$extra_headers" = x
1416 then extra_headers=; fi
1417
1418 if test x$md_file = x
1419 then md_file=$cpu_type/$cpu_type.md; fi
1420
1421 if test x$out_file = x
1422 then out_file=$cpu_type/$cpu_type.c; fi
1423
1424 if test x"$tmake_file" = x
1425 then tmake_file=$cpu_type/t-$cpu_type
1426 fi
1427
1428 # Support --enable-initfini-array.
1429 if test x$enable_initfini_array != xno; then
1430   tm_file="${tm_file} initfini-array.h"
1431 fi
1432
1433 if test x"$dwarf2" = xyes
1434 then tm_file="$tm_file tm-dwarf2.h"
1435 fi
1436
1437 # Say what files are being used for the output code and MD file.
1438 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1439 echo "Using \`$srcdir/config/$md_file' as machine description file."
1440
1441 # If any of the xm_file variables contain nonexistent files, warn
1442 # about them and drop them.
1443
1444 bx=
1445 for x in $build_xm_file; do
1446   if    test -f $srcdir/config/$x
1447   then      bx="$bx $x"
1448   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1449   fi
1450 done
1451 build_xm_file="$bx"
1452
1453 hx=
1454 for x in $host_xm_file; do
1455   if    test -f $srcdir/config/$x
1456   then      hx="$hx $x"
1457   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1458   fi
1459 done
1460 host_xm_file="$hx"
1461
1462 tx=
1463 for x in $xm_file; do
1464   if    test -f $srcdir/config/$x
1465   then      tx="$tx $x"
1466   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1467   fi
1468 done
1469 xm_file="$tx"
1470
1471 count=a
1472 for f in $tm_file; do
1473         count=${count}x
1474 done
1475 if test $count = ax; then
1476         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1477 else
1478         echo "Using the following target machine macro files:"
1479         for f in $tm_file; do
1480                 echo "  $srcdir/config/$f"
1481         done
1482 fi
1483
1484 if test x$use_long_long_for_widest_fast_int = xyes; then
1485         AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1486 [Define to 1 if the 'long long' type is wider than 'long' but still
1487 efficiently supported by the host hardware.])
1488 fi
1489
1490 gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi`
1491 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.])
1492
1493 gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi`
1494 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.])
1495
1496 count=a
1497 for f in $host_xm_file; do
1498         count=${count}x
1499 done
1500 if test $count = a; then
1501         :
1502 elif test $count = ax; then
1503         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1504 else
1505         echo "Using the following host machine macro files:"
1506         for f in $host_xm_file; do
1507                 echo "  $srcdir/config/$f"
1508         done
1509 fi
1510 echo "Using ${out_host_hook_obj} for host machine hooks."
1511
1512 if test "$host_xm_file" != "$build_xm_file"; then
1513         count=a
1514         for f in $build_xm_file; do
1515                 count=${count}x
1516         done
1517         if test $count = a; then
1518                 :
1519         elif test $count = ax; then
1520                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1521         else
1522                 echo "Using the following build machine macro files:"
1523                 for f in $build_xm_file; do
1524                         echo "  $srcdir/config/$f"
1525                 done
1526         fi
1527 fi
1528
1529 if test -n "$configured_native_system_header_dir"; then
1530   native_system_header_dir=$configured_native_system_header_dir
1531 fi
1532 NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir"
1533 AC_SUBST(NATIVE_SYSTEM_HEADER_DIR)
1534
1535 case ${host} in
1536   powerpc*-*-darwin*)
1537     AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1538       gcc_cv_mcontext_underscores,
1539       AC_COMPILE_IFELSE([
1540 #include <sys/cdefs.h>
1541 #include <sys/signal.h>
1542 #include <ucontext.h>
1543 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1544 ],
1545         gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1546       if test $gcc_cv_mcontext_underscores = yes; then
1547         AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1548           [mcontext_t fields start with __])
1549       fi
1550     ;;
1551 esac
1552
1553 # ---------
1554 # Threading
1555 # ---------
1556
1557 # Check if a valid thread package
1558 case ${enable_threads} in
1559   "" | no)
1560     # No threads
1561     target_thread_file='single'
1562     ;;
1563   yes)
1564     # default
1565     target_thread_file='single'
1566     ;;
1567   aix | dce | lynx | mipssde | posix | rtems | \
1568   single | tpf | vxworks | win32)
1569     target_thread_file=${enable_threads}
1570     ;;
1571   *)
1572     echo "${enable_threads} is an unknown thread package" 1>&2
1573     exit 1
1574     ;;
1575 esac
1576
1577 if test x${thread_file} = x; then
1578   # No thread file set by target-specific clauses in config.gcc,
1579   # so use file chosen by default logic above
1580   thread_file=${target_thread_file}
1581 fi
1582
1583 # --------
1584 # UNSORTED
1585 # --------
1586
1587 use_cxa_atexit=no
1588 if test x$enable___cxa_atexit = xyes || \
1589    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1590   if test x$host = x$target; then
1591     case $host in
1592       # mingw32 doesn't have __cxa_atexit but uses atexit registration
1593       # keyed to flag_use_cxa_atexit
1594       *-*-mingw32*)
1595         use_cxa_atexit=yes
1596         ;;
1597       powerpc-ibm-aix*)
1598         use_cxa_atexit=yes
1599         ;;
1600       *)
1601         AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1602           [echo "__cxa_atexit can't be enabled on this target"])
1603         ;;
1604     esac
1605   else
1606     # We can't check for __cxa_atexit when building a cross, so assume
1607     # it is available
1608     use_cxa_atexit=yes
1609   fi
1610   if test x$use_cxa_atexit = xyes; then
1611     AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1612       [Define if you want to use __cxa_atexit, rather than atexit, to
1613       register C++ destructors for local statics and global objects.
1614       This is essential for fully standards-compliant handling of
1615       destructors, but requires __cxa_atexit in libc.])
1616   fi
1617 fi
1618
1619 # Look for a file containing extra machine modes.
1620 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1621   extra_modes_file='$(srcdir)'/config/${extra_modes}
1622   AC_SUBST(extra_modes_file)
1623   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1624   [Define to the name of a file containing a list of extra machine modes
1625    for this architecture.])
1626 fi
1627
1628 # Convert extra_options into a form suitable for Makefile use.
1629 extra_opt_files=
1630 all_opt_files=
1631 for f in $extra_options; do
1632   extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1633   all_opt_files="$all_opt_files $srcdir/config/$f"
1634 done
1635 AC_SUBST(extra_opt_files)
1636
1637 # auto-host.h is the file containing items generated by autoconf and is
1638 # the first file included by config.h.
1639 # If host=build, it is correct to have bconfig include auto-host.h
1640 # as well.  If host!=build, we are in error and need to do more
1641 # work to find out the build config parameters.
1642 if test x$host = x$build
1643 then
1644         build_auto=auto-host.h
1645 else
1646         # We create a subdir, then run autoconf in the subdir.
1647         # To prevent recursion we set host and build for the new
1648         # invocation of configure to the build for this invocation
1649         # of configure.
1650         tempdir=build.$$
1651         rm -rf $tempdir
1652         mkdir $tempdir
1653         cd $tempdir
1654         case ${srcdir} in
1655         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1656         *) realsrcdir=../${srcdir};;
1657         esac
1658         # Clearing GMPINC is necessary to prevent host headers being
1659         # used by the build compiler.  Defining GENERATOR_FILE stops
1660         # system.h from including gmp.h.
1661         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1662         CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \
1663         LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1664         GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \
1665         ${realsrcdir}/configure \
1666                 --enable-languages=${enable_languages-all} \
1667                 --target=$target_alias --host=$build_alias --build=$build_alias
1668
1669         # We just finished tests for the build machine, so rename
1670         # the file auto-build.h in the gcc directory.
1671         mv auto-host.h ../auto-build.h
1672         cd ..
1673         rm -rf $tempdir
1674         build_auto=auto-build.h
1675 fi
1676 AC_SUBST(build_subdir)
1677
1678 tm_file="${tm_file} defaults.h"
1679 tm_p_file="${tm_p_file} tm-preds.h"
1680 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1681 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1682 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1683 # put this back in temporarily.
1684 xm_file="auto-host.h ansidecl.h ${xm_file}"
1685
1686 # --------
1687 # UNSORTED
1688 # --------
1689
1690 changequote(,)dnl
1691 # Compile in configure arguments.
1692 if test -f configargs.h ; then
1693         # Being re-configured.
1694         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1695         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1696 else
1697         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1698 fi
1699
1700 # Double all backslashes and backslash all quotes to turn
1701 # gcc_config_arguments into a C string.
1702 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1703 $gcc_config_arguments
1704 EOF
1705 gcc_config_arguments_str=`cat conftest.out`
1706 rm -f conftest.out
1707
1708 cat > configargs.h <<EOF
1709 /* Generated automatically. */
1710 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1711 static const char thread_model[] = "$thread_file";
1712
1713 static const struct {
1714   const char *name, *value;
1715 } configure_default_options[] = $configure_default_options;
1716 EOF
1717 changequote([,])dnl
1718
1719 changequote(,)dnl
1720 gcc_BASEVER=`cat $srcdir/BASE-VER`
1721 gcc_DEVPHASE=`cat $srcdir/DEV-PHASE`
1722 gcc_DATESTAMP=`cat $srcdir/DATESTAMP`
1723 if test -f $srcdir/REVISION ; then
1724         gcc_REVISION=`cat $srcdir/REVISION`
1725 else
1726         gcc_REVISION=""
1727 fi
1728 cat > plugin-version.h <<EOF
1729 #include "configargs.h"
1730
1731 #define GCCPLUGIN_VERSION_MAJOR   `echo $gcc_BASEVER | sed -e 's/^\([0-9]*\).*$/\1/'`
1732 #define GCCPLUGIN_VERSION_MINOR   `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.\([0-9]*\).*$/\1/'`
1733 #define GCCPLUGIN_VERSION_PATCHLEVEL   `echo $gcc_BASEVER | sed -e 's/^[0-9]*\.[0-9]*\.\([0-9]*\)$/\1/'`
1734 #define GCCPLUGIN_VERSION  (GCCPLUGIN_VERSION_MAJOR*1000 + GCCPLUGIN_VERSION_MINOR)
1735
1736 static char basever[] = "$gcc_BASEVER";
1737 static char datestamp[] = "$gcc_DATESTAMP";
1738 static char devphase[] = "$gcc_DEVPHASE";
1739 static char revision[] = "$gcc_REVISION";
1740
1741 /* FIXME plugins: We should make the version information more precise.
1742    One way to do is to add a checksum. */
1743
1744 static struct plugin_gcc_version gcc_version = {basever, datestamp,
1745                                                 devphase, revision,
1746                                                 configuration_arguments};
1747 EOF
1748 changequote([,])dnl
1749
1750 # Internationalization
1751 ZW_GNU_GETTEXT_SISTER_DIR
1752
1753 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1754 # -liconv on the link line twice.
1755 case "$LIBINTL" in *$LIBICONV*)
1756         LIBICONV= ;;
1757 esac
1758
1759 AC_ARG_ENABLE(secureplt,
1760 [AS_HELP_STRING([--enable-secureplt],
1761                 [enable -msecure-plt by default for PowerPC])],
1762 [], [])
1763
1764 AC_ARG_ENABLE(leading-mingw64-underscores,
1765   AS_HELP_STRING([--enable-leading-mingw64-underscores],
1766                  [enable leading underscores on 64 bit mingw targets]),
1767   [],[])
1768 AS_IF([ test x"$enable_leading_mingw64_underscores" = xyes ],
1769   [AC_DEFINE(USE_MINGW64_LEADING_UNDERSCORES, 1,
1770     [Define if we should use leading underscore on 64 bit mingw targets])])
1771
1772 AC_ARG_ENABLE(cld,
1773 [AS_HELP_STRING([--enable-cld], [enable -mcld by default for 32bit x86])], [],
1774 [enable_cld=no])
1775
1776 AC_ARG_ENABLE(frame-pointer,
1777 [AS_HELP_STRING([--enable-frame-pointer],
1778                 [enable -fno-omit-frame-pointer by default for 32bit x86])], [],
1779 [
1780 case $target_os in
1781 linux* | darwin[[8912]]*)
1782   # Enable -fomit-frame-pointer by default for Linux and Darwin with
1783   # DWARF2.
1784   enable_frame_pointer=no
1785   ;;
1786 *)
1787   enable_frame_pointer=yes
1788   ;;
1789 esac
1790 ])
1791
1792 # Windows32 Registry support for specifying GCC installation paths.
1793 AC_ARG_ENABLE(win32-registry,
1794 [AS_HELP_STRING([--disable-win32-registry],
1795                 [disable lookup of installation paths in the
1796                  Registry on Windows hosts])
1797 AS_HELP_STRING([--enable-win32-registry], [enable registry lookup (default)])
1798 AS_HELP_STRING([--enable-win32-registry=KEY],
1799                [use KEY instead of GCC version as the last portion
1800                 of the registry key])],,)
1801
1802 case $host_os in
1803   win32 | pe | cygwin* | mingw32*)
1804     if test "x$enable_win32_registry" != xno; then
1805       AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1806     fi
1807
1808     if test "x$enable_win32_registry" != xno; then
1809       AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1810   [Define to 1 if installation paths should be looked up in the Windows
1811    Registry. Ignored on non-Windows hosts.])
1812
1813       if test "x$enable_win32_registry" != xyes \
1814          && test "x$enable_win32_registry" != x; then
1815         AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1816   [Define to be the last component of the Windows registry key under which
1817    to look for installation paths.  The full key used will be
1818    HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1819    The default is the GCC version number.])
1820       fi
1821     fi
1822   ;;
1823 esac
1824
1825 # Get an absolute path to the GCC top-level source directory
1826 holddir=`${PWDCMD-pwd}`
1827 cd $srcdir
1828 topdir=`${PWDCMD-pwd}`
1829 cd $holddir
1830
1831 # Conditionalize the makefile for this host machine.
1832 xmake_file=
1833 for f in ${host_xmake_file}
1834 do
1835         if test -f ${srcdir}/config/$f
1836         then
1837                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1838         fi
1839 done
1840
1841 # Conditionalize the makefile for this target machine.
1842 tmake_file_=
1843 for f in ${tmake_file}
1844 do
1845         if test -f ${srcdir}/config/$f
1846         then
1847                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1848         fi
1849 done
1850 tmake_file="${tmake_file_}"
1851
1852 out_object_file=`basename $out_file .c`.o
1853 common_out_object_file=`basename $common_out_file .c`.o
1854
1855 tm_file_list="options.h"
1856 tm_include_list="options.h insn-constants.h"
1857 for f in $tm_file; do
1858   case $f in
1859     ./* )
1860        f=`echo $f | sed 's/^..//'`
1861        tm_file_list="${tm_file_list} $f"
1862        tm_include_list="${tm_include_list} $f"
1863        ;;
1864     defaults.h )
1865        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1866        tm_include_list="${tm_include_list} $f"
1867        ;;
1868     * )
1869        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1870        tm_include_list="${tm_include_list} config/$f"
1871        ;;
1872   esac
1873 done
1874
1875 tm_p_file_list=
1876 tm_p_include_list=
1877 for f in $tm_p_file; do
1878   case $f in
1879     tm-preds.h )
1880        tm_p_file_list="${tm_p_file_list} $f"
1881        tm_p_include_list="${tm_p_include_list} $f"
1882        ;;
1883     * )
1884        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1885        tm_p_include_list="${tm_p_include_list} config/$f"
1886   esac
1887 done
1888
1889 xm_file_list=
1890 xm_include_list=
1891 for f in $xm_file; do
1892   case $f in
1893     ansidecl.h )
1894        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1895        xm_include_list="${xm_include_list} $f"
1896        ;;
1897     auto-host.h )
1898        xm_file_list="${xm_file_list} $f"
1899        xm_include_list="${xm_include_list} $f"
1900        ;;
1901     * )
1902        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1903        xm_include_list="${xm_include_list} config/$f"
1904        ;;
1905   esac
1906 done
1907
1908 host_xm_file_list=
1909 host_xm_include_list=
1910 for f in $host_xm_file; do
1911   case $f in
1912     ansidecl.h )
1913        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1914        host_xm_include_list="${host_xm_include_list} $f"
1915        ;;
1916     auto-host.h )
1917        host_xm_file_list="${host_xm_file_list} $f"
1918        host_xm_include_list="${host_xm_include_list} $f"
1919        ;;
1920     * )
1921        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1922        host_xm_include_list="${host_xm_include_list} config/$f"
1923        ;;
1924   esac
1925 done
1926
1927 build_xm_file_list=
1928 for f in $build_xm_file; do
1929   case $f in
1930     ansidecl.h )
1931        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1932        build_xm_include_list="${build_xm_include_list} $f"
1933        ;;
1934     auto-build.h | auto-host.h )
1935        build_xm_file_list="${build_xm_file_list} $f"
1936        build_xm_include_list="${build_xm_include_list} $f"
1937        ;;
1938     * )
1939        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1940        build_xm_include_list="${build_xm_include_list} config/$f"
1941        ;;
1942   esac
1943 done
1944
1945 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1946 # cross-compiler which does not use the native headers and libraries.
1947 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1948 CROSS=                                          AC_SUBST(CROSS)
1949 ALL=all.internal                                AC_SUBST(ALL)
1950 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1951
1952 if test "x$with_build_sysroot" != x; then
1953   build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1954 else
1955   # This value is used, even on a native system, because
1956   # CROSS_SYSTEM_HEADER_DIR is just
1957   # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1958   build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1959 fi
1960
1961 if test x$host != x$target
1962 then
1963         CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1964         ALL=all.cross
1965         SYSTEM_HEADER_DIR=$build_system_header_dir
1966         case "$host","$target" in
1967         # Darwin crosses can use the host system's libraries and headers,
1968         # because of the fat library support.  Of course, it must be the
1969         # same version of Darwin on both sides.  Allow the user to
1970         # just say --target=foo-darwin without a version number to mean
1971         # "the version on this system".
1972             *-*-darwin*,*-*-darwin*)
1973                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1974                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1975                 if test $hostos = $targetos -o $targetos = darwin ; then
1976                     CROSS=
1977                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1978                     with_headers=yes
1979                 fi
1980                 ;;
1981
1982             i?86-*-*,x86_64-*-* \
1983             | powerpc*-*-*,powerpc64*-*-*)
1984                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1985         esac
1986
1987         case $target in
1988                 *-*-mingw*)
1989                         if test "x$with_headers" = x; then
1990                                 with_headers=yes
1991                         fi
1992                         ;;
1993                 *)
1994                         ;;
1995         esac
1996 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1997         SYSTEM_HEADER_DIR=$build_system_header_dir
1998 fi
1999
2000 if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
2001   if test "x$with_headers" != x; then
2002     target_header_dir=$with_headers
2003   elif test "x$with_sysroot" = x; then
2004     target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-include"
2005   elif test "x$with_build_sysroot" != "x"; then
2006     target_header_dir="${with_build_sysroot}${native_system_header_dir}"
2007   elif test "x$with_sysroot" = xyes; then
2008     target_header_dir="${test_exec_prefix}/${target_noncanonical}/sys-root${native_system_header_dir}"
2009   else
2010     target_header_dir="${with_sysroot}${native_system_header_dir}"
2011   fi
2012 else
2013   target_header_dir=${native_system_header_dir}
2014 fi
2015
2016 # If this is a cross-compiler that does not
2017 # have its own set of headers then define
2018 # inhibit_libc
2019
2020 # If this is using newlib, without having the headers available now,
2021 # then define inhibit_libc in LIBGCC2_CFLAGS.
2022 # This prevents libgcc2 from containing any code which requires libc
2023 # support.
2024 : ${inhibit_libc=false}
2025 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
2026        test x$with_newlib = xyes ; } &&
2027      { test "x$with_headers" = xno || test ! -f "$target_header_dir/stdio.h"; } ; then
2028        inhibit_libc=true
2029 fi
2030 AC_SUBST(inhibit_libc)
2031
2032 # When building gcc with a cross-compiler, we need to adjust things so
2033 # that the generator programs are still built with the native compiler.
2034 # Also, we cannot run fixincludes.
2035
2036 # These are the normal (build=host) settings:
2037 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
2038 CXX_FOR_BUILD='$(CXX)'          AC_SUBST(CXX_FOR_BUILD)
2039 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
2040 BUILD_CXXFLAGS='$(ALL_CXXFLAGS)' AC_SUBST(BUILD_CXXFLAGS)
2041 BUILD_LDFLAGS='$(LDFLAGS)'      AC_SUBST(BUILD_LDFLAGS)
2042 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
2043
2044 BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS)' AC_SUBST(BUILD_NO_PIE_CFLAGS)
2045 BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG)' AC_SUBST(BUILD_NO_PIE_FLAG)
2046
2047 # And these apply if build != host, or we are generating coverage data
2048 if test x$build != x$host || test "x$coverage_flags" != x
2049 then
2050     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
2051     BUILD_CXXFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CXXFLAGS_FOR_BUILD)'
2052     BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
2053
2054     NO_PIE_CFLAGS_FOR_BUILD=${NO_PIE_CFLAGS_FOR_BUILD-${NO_PIE_CFLAGS}}
2055     NO_PIE_FLAG_FOR_BUILD=${NO_PIE_FLAG_FOR_BUILD-${NO_PIE_FLAG}}
2056     BUILD_NO_PIE_CFLAGS='$(NO_PIE_CFLAGS_FOR_BUILD)'
2057     BUILD_NO_PIE_FLAG='$(NO_PIE_FLAG_FOR_BUILD)'
2058 fi
2059 AC_SUBST(NO_PIE_CFLAGS_FOR_BUILD)
2060 AC_SUBST(NO_PIE_FLAG_FOR_BUILD)
2061
2062 # Expand extra_headers to include complete path.
2063 # This substitutes for lots of t-* files.
2064 extra_headers_list=
2065 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
2066 for file in ${extra_headers} ; do
2067   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
2068 done
2069
2070 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
2071 if test x"$use_gcc_tgmath" = xyes
2072 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
2073 fi
2074
2075 # Define collect2 in Makefile.
2076 case $host_can_use_collect2 in
2077   no) collect2= ;;
2078   *) collect2='collect2$(exeext)' ;;
2079 esac
2080 AC_SUBST([collect2])
2081
2082 # Add a definition of USE_COLLECT2 if system wants one.
2083 case $use_collect2 in
2084   no) use_collect2= ;;
2085   "") ;;
2086   *)
2087     host_xm_defines="${host_xm_defines} USE_COLLECT2"
2088     xm_defines="${xm_defines} USE_COLLECT2"
2089     case $host_can_use_collect2 in
2090       no)
2091         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
2092         ;;
2093     esac
2094     ;;
2095 esac
2096
2097 AC_DEFINE_UNQUOTED(LTOPLUGINSONAME,"${host_lto_plugin_soname}",
2098 [Define to the name of the LTO plugin DSO that must be
2099   passed to the linker's -plugin=LIB option.])
2100
2101 # ---------------------------
2102 # Assembler & linker features
2103 # ---------------------------
2104
2105 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
2106 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
2107 # However when ld-new is first executed from the build tree, libtool will
2108 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
2109 # to the build tree.  While doing this we need to use the previous-stage
2110 # linker, or we have an infinite loop.  The presence of a shell script as
2111 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
2112 # the gcc/collect-ld script.  So we need to know how libtool works, or
2113 # exec-tool will fail.
2114
2115 m4_defun([_LT_CONFIG_COMMANDS], [])
2116 AC_PROG_LIBTOOL
2117 AC_SUBST(objdir)
2118 AC_SUBST(enable_fast_install)
2119
2120 # Identify the assembler which will work hand-in-glove with the newly
2121 # built GCC, so that we can examine its features.  This is the assembler
2122 # which will be driven by the driver program.
2123 #
2124 # If build != host, and we aren't building gas in-tree, we identify a
2125 # build->target assembler and hope that it will have the same features
2126 # as the host->target assembler we'll be using.
2127 gcc_cv_gas_major_version=
2128 gcc_cv_gas_minor_version=
2129 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
2130
2131 m4_pattern_allow([AS_FOR_TARGET])dnl
2132 AS_VAR_SET_IF(gcc_cv_as,, [
2133 if test -x "$DEFAULT_ASSEMBLER"; then
2134         gcc_cv_as="$DEFAULT_ASSEMBLER"
2135 elif test -f $gcc_cv_as_gas_srcdir/configure.ac \
2136      && test -f ../gas/Makefile \
2137      && test x$build = x$host; then
2138         gcc_cv_as=../gas/as-new$build_exeext
2139 elif test -x as$build_exeext; then
2140         # Build using assembler in the current directory.
2141         gcc_cv_as=./as$build_exeext
2142 elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then
2143         gcc_cv_as="$AS_FOR_TARGET"
2144 else
2145         AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
2146 fi])
2147
2148 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
2149 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
2150 case "$ORIGINAL_AS_FOR_TARGET" in
2151   ./as | ./as$build_exeext) ;;
2152   *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
2153 esac
2154
2155 AC_MSG_CHECKING(what assembler to use)
2156 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
2157   # Single tree build which includes gas.  We want to prefer it
2158   # over whatever linker top-level may have detected, since
2159   # we'll use what we're building after installation anyway.
2160   AC_MSG_RESULT(newly built gas)
2161   in_tree_gas=yes
2162   _gcc_COMPUTE_GAS_VERSION
2163   in_tree_gas_is_elf=no
2164   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2165      || (grep 'obj_format = multi' ../gas/Makefile \
2166          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
2167   then
2168     in_tree_gas_is_elf=yes
2169   fi
2170 else
2171   AC_MSG_RESULT($gcc_cv_as)
2172   in_tree_gas=no
2173 fi
2174
2175 default_ld=
2176 AC_ARG_ENABLE(ld,
2177 [[  --enable-ld[=ARG]       build ld [ARG={default,yes,no}]]],
2178 [case "${enableval}" in
2179  no)
2180    default_ld=ld.gold
2181    ;;
2182  esac])
2183
2184 install_gold_as_default=no
2185 AC_ARG_ENABLE(gold,
2186 [[  --enable-gold[=ARG]     build gold [ARG={default,yes,no}]]],
2187 [case "${enableval}" in
2188  default)
2189    install_gold_as_default=yes
2190    ;;
2191  yes)
2192    if test x${default_ld} != x; then
2193      install_gold_as_default=yes
2194    fi
2195    ;;
2196  no)
2197    ;;
2198  *)
2199    AC_MSG_ERROR([invalid --enable-gold argument])
2200    ;;
2201  esac])
2202
2203 # Identify the linker which will work hand-in-glove with the newly
2204 # built GCC, so that we can examine its features.  This is the linker
2205 # which will be driven by the driver program.
2206 #
2207 # If build != host, and we aren't building gas in-tree, we identify a
2208 # build->target linker and hope that it will have the same features
2209 # as the host->target linker we'll be using.
2210 gcc_cv_gld_major_version=
2211 gcc_cv_gld_minor_version=
2212 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
2213 gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
2214 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
2215
2216 AS_VAR_SET_IF(gcc_cv_ld,, [
2217 if test -x "$DEFAULT_LINKER"; then
2218         gcc_cv_ld="$DEFAULT_LINKER"
2219 elif test $install_gold_as_default = yes \
2220      && test -f $gcc_cv_ld_gold_srcdir/configure.ac \
2221      && test -f ../gold/Makefile \
2222      && test x$build = x$host; then
2223         gcc_cv_ld=../gold/ld-new$build_exeext
2224 elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \
2225      && test -f ../ld/Makefile \
2226      && test x$build = x$host; then
2227         gcc_cv_ld=../ld/ld-new$build_exeext
2228 elif test -x collect-ld$build_exeext; then
2229         # Build using linker in the current directory.
2230         gcc_cv_ld=./collect-ld$build_exeext
2231 elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then
2232         gcc_cv_ld="$LD_FOR_TARGET"
2233 else
2234         AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
2235 fi])
2236
2237 ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
2238 PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"`
2239 # if the PLUGIN_LD is set ld-new, just have it as ld
2240 # as that is the installed named.
2241 if test x$PLUGIN_LD_SUFFIX = xld-new \
2242    || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then
2243   PLUGIN_LD_SUFFIX=ld
2244 fi
2245 AC_ARG_WITH(plugin-ld,
2246 [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])],
2247 [if test x"$withval" != x; then
2248    ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval"
2249    PLUGIN_LD_SUFFIX="$withval"
2250  fi])
2251 AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET)
2252 AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker])
2253
2254 # Check to see if we are using gold instead of ld
2255 AC_MSG_CHECKING(whether we are using gold)
2256 ld_is_gold=no
2257 if test x$gcc_cv_ld != x; then
2258   if $gcc_cv_ld --version 2>/dev/null | sed 1q \
2259      | grep "GNU gold" > /dev/null; then
2260     ld_is_gold=yes
2261   fi
2262 fi
2263 AC_MSG_RESULT($ld_is_gold)
2264
2265 AC_MSG_CHECKING(gold linker with split stack support as non default)
2266 # Check to see if default ld is not gold, but gold is
2267 # available and has support for split stack.  If gcc was configured
2268 # with gold then no checking is done.
2269 #
2270 if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then
2271
2272 # For platforms other than powerpc64*, enable as appropriate.
2273
2274   gold_non_default=no
2275   ld_gold=`which ${gcc_cv_ld}.gold`
2276 # Make sure this gold has minimal split stack support
2277   if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then
2278     ld_vers=`$ld_gold --version | sed 1q`
2279     gold_vers=`echo $ld_vers | sed -n \
2280           -e 's,^[[^)]]*[[  ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'`
2281     case $target in
2282 # check that the gold version contains the complete split stack support
2283 # on powerpc64 big and little endian
2284       powerpc64*-*-*)
2285         case "$gold_vers" in
2286           2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes
2287           ;;
2288           *) gold_non_default=no
2289           ;;
2290         esac
2291         ;;
2292     esac
2293   fi
2294   if test $gold_non_default = yes; then
2295     AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1,
2296             [Define if the gold linker supports split stack and is available as a non-default])
2297   fi
2298 fi
2299 AC_MSG_RESULT($gold_non_default)
2300
2301 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
2302 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
2303 case "$ORIGINAL_LD_FOR_TARGET" in
2304   ./collect-ld | ./collect-ld$build_exeext) ;;
2305   *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
2306 esac
2307
2308 AC_MSG_CHECKING(what linker to use)
2309 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \
2310    || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then
2311         # Single tree build which includes ld.  We want to prefer it
2312         # over whatever linker top-level may have detected, since
2313         # we'll use what we're building after installation anyway.
2314         AC_MSG_RESULT(newly built ld)
2315         in_tree_ld=yes
2316         in_tree_ld_is_elf=no
2317         if (grep 'EMUL = .*elf' ../ld/Makefile \
2318             || grep 'EMUL = .*linux' ../ld/Makefile \
2319             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
2320           in_tree_ld_is_elf=yes
2321         elif test "$ld_is_gold" = yes; then
2322           in_tree_ld_is_elf=yes
2323         fi
2324         for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in
2325         do
2326 changequote(,)dnl
2327                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f`
2328                 if test x$gcc_cv_gld_version != x; then
2329                         break
2330                 fi
2331         done
2332         case $gcc_cv_gld_version in
2333           VERSION=[0-9]*) ;;
2334 changequote([,])dnl
2335           *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;;
2336 changequote(,)dnl
2337         esac
2338         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
2339         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
2340 changequote([,])dnl
2341         ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext
2342         ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext
2343 else
2344         AC_MSG_RESULT($gcc_cv_ld)
2345         in_tree_ld=no
2346         gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext`
2347         ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext
2348         ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext
2349 fi
2350
2351 AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET)
2352 AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET)
2353
2354 # Figure out what nm we will be using.
2355 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
2356 AS_VAR_SET_IF(gcc_cv_nm,, [
2357 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2358      && test -f ../binutils/Makefile \
2359      && test x$build = x$host; then
2360         gcc_cv_nm=../binutils/nm-new$build_exeext
2361 elif test -x nm$build_exeext; then
2362         gcc_cv_nm=./nm$build_exeext
2363 elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then
2364         gcc_cv_nm="$NM_FOR_TARGET"
2365 else
2366         AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
2367 fi])
2368
2369 AC_MSG_CHECKING(what nm to use)
2370 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
2371         # Single tree build which includes binutils.
2372         AC_MSG_RESULT(newly built nm)
2373         in_tree_nm=yes
2374 else
2375         AC_MSG_RESULT($gcc_cv_nm)
2376         in_tree_nm=no
2377 fi
2378
2379 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
2380 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
2381 case "$ORIGINAL_NM_FOR_TARGET" in
2382   ./nm | ./nm$build_exeext) ;;
2383   *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
2384 esac
2385
2386
2387 # Figure out what objdump we will be using.
2388 AS_VAR_SET_IF(gcc_cv_objdump,, [
2389 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2390      && test -f ../binutils/Makefile \
2391      && test x$build = x$host; then
2392         # Single tree build which includes binutils.
2393         gcc_cv_objdump=../binutils/objdump$build_exeext
2394 elif test -x objdump$build_exeext; then
2395         gcc_cv_objdump=./objdump$build_exeext
2396 elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then
2397         gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
2398 else
2399         AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
2400 fi])
2401
2402 AC_MSG_CHECKING(what objdump to use)
2403 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2404         # Single tree build which includes binutils.
2405         AC_MSG_RESULT(newly built objdump)
2406 elif test x$gcc_cv_objdump = x; then
2407         AC_MSG_RESULT(not found)
2408 else
2409         AC_MSG_RESULT($gcc_cv_objdump)
2410 fi
2411
2412 # Figure out what readelf we will be using.
2413 AS_VAR_SET_IF(gcc_cv_readelf,, [
2414 if test -f $gcc_cv_binutils_srcdir/configure.ac \
2415      && test -f ../binutils/Makefile \
2416      && test x$build = x$host; then
2417         # Single tree build which includes binutils.
2418         gcc_cv_readelf=../binutils/readelf$build_exeext
2419 elif test -x readelf$build_exeext; then
2420         gcc_cv_readelf=./readelf$build_exeext
2421 elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then
2422         gcc_cv_readelf="$READELF_FOR_TARGET"
2423 else
2424         AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET)
2425 fi])
2426
2427 AC_MSG_CHECKING(what readelf to use)
2428 if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then
2429         # Single tree build which includes binutils.
2430         AC_MSG_RESULT(newly built readelf)
2431 elif test x$gcc_cv_readelf = x; then
2432         AC_MSG_RESULT(not found)
2433 else
2434         AC_MSG_RESULT($gcc_cv_readelf)
2435 fi
2436
2437 # Figure out what assembler alignment features are present.
2438 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2439  [2,6,0],,
2440 [.balign 4
2441 .p2align 2],,
2442 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2443   [Define if your assembler supports .balign and .p2align.])])
2444
2445 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2446  [2,8,0],,
2447  [.p2align 4,,7],,
2448 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2449   [Define if your assembler supports specifying the maximum number
2450    of bytes to skip when using the GAS .p2align command.])])
2451
2452 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2453  [2,8,0],,
2454  [.literal16],,
2455 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2456   [Define if your assembler supports .literal16.])])
2457
2458 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2459  [elf,2,9,0],,
2460  [conftest_label1: .word 0
2461 .subsection -1
2462 conftest_label2: .word 0
2463 .previous],
2464  [if test x$gcc_cv_nm != x; then
2465     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2466     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2467     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2468     then :
2469     else gcc_cv_as_subsection_m1=yes
2470     fi
2471     rm -f conftest.nm1 conftest.nm2
2472   fi],
2473  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2474   [Define if your assembler supports .subsection and .subsection -1 starts
2475    emitting at the beginning of your section.])])
2476
2477 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2478  [2,2,0],,
2479  [      .weak foobar],,
2480 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2481
2482 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2483  [2,17,0],,
2484  [      .weakref foobar, barfnot],,
2485 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2486
2487 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2488  [2,15,91],,
2489  [      .SPACE $TEXT$
2490         .NSUBSPA $CODE$,COMDAT],,
2491 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2492
2493 # .hidden needs to be supported in both the assembler and the linker,
2494 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2495 # This is irritatingly difficult to feature test for; we have to check the
2496 # date string after the version number.  If we've got an in-tree
2497 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2498 # to be safe.
2499 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2500 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2501  [elf,2,13,0],,
2502 [       .hidden foobar
2503 foobar:])
2504 case "${target}" in
2505   *-*-darwin*)
2506     # Darwin as has some visibility support, though with a different syntax.
2507     gcc_cv_as_hidden=yes
2508     ;;
2509 esac
2510
2511 # gnu_indirect_function type is an extension proposed at
2512 # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime
2513 # selection of function implementation
2514 AC_ARG_ENABLE(gnu-indirect-function,
2515  [AS_HELP_STRING([--enable-gnu-indirect-function],
2516                  [enable the use of the @gnu_indirect_function to glibc systems])],
2517  [case $enable_gnu_indirect_function in
2518     yes | no) ;;
2519     *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function.
2520 Valid choices are 'yes' and 'no'.]) ;;
2521   esac],
2522  [enable_gnu_indirect_function="$default_gnu_indirect_function"])
2523
2524 gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi`
2525 AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif,
2526 [Define if your system supports gnu indirect functions.])
2527
2528
2529 changequote(,)dnl
2530 if test $in_tree_ld != yes ; then
2531   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2532   if echo "$ld_ver" | grep GNU > /dev/null; then
2533     if test x"$ld_is_gold" = xyes; then
2534       # GNU gold --version looks like this:
2535       #
2536       # GNU gold (GNU Binutils 2.21.51.20110225) 1.11
2537       #
2538       # We extract the binutils version which is more familiar and specific
2539       # than the gold version.
2540       ld_vers=`echo $ld_ver | sed -n \
2541           -e 's,^[^)]*[  ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
2542     else
2543       # GNU ld --version looks like this:
2544       #
2545       # GNU ld (GNU Binutils) 2.21.51.20110225
2546       ld_vers=`echo $ld_ver | sed -n \
2547           -e 's,^.*[     ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2548     fi
2549     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2550     ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2551     ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2552     ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2553   else
2554     case "${target}" in
2555       *-*-solaris2*)
2556         # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number
2557         # format.
2558         #
2559         # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than
2560         # /usr/ccs/bin/ld has been configured.
2561         ld_ver=`$gcc_cv_ld -V 2>&1`
2562         if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then
2563           ld_vers=`echo $ld_ver | sed -n \
2564             -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'`
2565           ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2566           ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2567         fi
2568         ;;
2569     esac
2570   fi
2571 fi
2572 changequote([,])dnl
2573
2574 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2575 [[if test $in_tree_ld = yes ; then
2576   gcc_cv_ld_hidden=no
2577   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2578      && test $in_tree_ld_is_elf = yes; then
2579      gcc_cv_ld_hidden=yes
2580   fi
2581 else
2582   gcc_cv_ld_hidden=yes
2583   if test x"$ld_is_gold" = xyes; then
2584     :
2585   elif echo "$ld_ver" | grep GNU > /dev/null; then
2586     case "${target}" in
2587       mmix-knuth-mmixware)
2588         # The linker emits by default mmo, not ELF, so "no" is appropriate.
2589         gcc_cv_ld_hidden=no
2590         ;;
2591     esac
2592     if test 0"$ld_date" -lt 20020404; then
2593       if test -n "$ld_date"; then
2594         # If there was date string, but was earlier than 2002-04-04, fail
2595         gcc_cv_ld_hidden=no
2596       elif test -z "$ld_vers"; then
2597         # If there was no date string nor ld version number, something is wrong
2598         gcc_cv_ld_hidden=no
2599       else
2600         test -z "$ld_vers_patch" && ld_vers_patch=0
2601         if test "$ld_vers_major" -lt 2; then
2602           gcc_cv_ld_hidden=no
2603         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2604           gcc_cv_ld_hidden="no"
2605         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2606           gcc_cv_ld_hidden=no
2607         fi
2608       fi
2609     fi
2610   else
2611     case "${target}" in
2612       *-*-darwin*)
2613         # Darwin ld has some visibility support.
2614         gcc_cv_ld_hidden=yes
2615         ;;
2616       hppa64*-*-hpux* | ia64*-*-hpux*)
2617         gcc_cv_ld_hidden=yes
2618         ;;
2619       *-*-solaris2.1[0-9]*)
2620         # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but
2621         # .symbolic was only added in Solaris 9 12/02.
2622         gcc_cv_ld_hidden=yes
2623         ;;
2624       *)
2625         gcc_cv_ld_hidden=no
2626         ;;
2627     esac
2628   fi
2629 fi]])
2630 libgcc_visibility=no
2631 AC_SUBST(libgcc_visibility)
2632 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2633 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2634   libgcc_visibility=yes
2635   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2636   [Define if your assembler and linker support .hidden.])
2637 fi
2638
2639 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2640 gcc_cv_ld_ro_rw_mix=unknown
2641 if test $in_tree_ld = yes ; then
2642   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2643      && test $in_tree_ld_is_elf = yes; then
2644     gcc_cv_ld_ro_rw_mix=read-write
2645   fi
2646 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2647   echo '.section myfoosect, "a"' > conftest1.s
2648   echo '.section myfoosect, "aw"' > conftest2.s
2649   echo '.byte 1' >> conftest2.s
2650   echo '.section myfoosect, "a"' > conftest3.s
2651   echo '.byte 0' >> conftest3.s
2652   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2653      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2654      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2655      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2656         conftest2.o conftest3.o > /dev/null 2>&1; then
2657     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2658                          | sed -e '/myfoosect/!d' -e N`
2659     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2660       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2661         gcc_cv_ld_ro_rw_mix=read-only
2662       else
2663         gcc_cv_ld_ro_rw_mix=read-write
2664       fi
2665     fi
2666   fi
2667 changequote(,)dnl
2668   rm -f conftest.* conftest[123].*
2669 changequote([,])dnl
2670 fi
2671 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2672         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2673   [Define if your linker links a mix of read-only
2674    and read-write sections into a read-write section.])
2675 fi
2676 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2677
2678 gcc_AC_INITFINI_ARRAY
2679
2680 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2681 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2682   [elf,2,11,0],,
2683 [       .data
2684         .uleb128 L2 - L1
2685 L1:
2686         .uleb128 1280
2687         .sleb128 -1010
2688 L2:],
2689 [[# GAS versions before 2.11 do not support uleb128,
2690   # despite appearing to.
2691   # ??? There exists an elf-specific test that will crash
2692   # the assembler.  Perhaps it's better to figure out whether
2693   # arbitrary sections are supported and try the test.
2694   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2695   if echo "$as_ver" | grep GNU > /dev/null; then
2696     as_vers=`echo $as_ver | sed -n \
2697         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2698     as_major=`expr "$as_vers" : '\([0-9]*\)'`
2699     as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2700     if test $as_major -eq 2 && test $as_minor -lt 11
2701     then :
2702     else gcc_cv_as_leb128=yes
2703     fi
2704   fi]],
2705   [AC_DEFINE(HAVE_AS_LEB128, 1,
2706     [Define if your assembler supports .sleb128 and .uleb128.])])
2707
2708 # Check if we have assembler support for unwind directives.
2709 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2710   ,,
2711 [       .text
2712         .cfi_startproc
2713         .cfi_offset 0, 0
2714         .cfi_same_value 1
2715         .cfi_def_cfa 1, 2
2716         .cfi_escape 1, 2, 3, 4, 5
2717         .cfi_endproc],
2718 [case "$target" in
2719   *-*-solaris*)
2720     # If the linker used on Solaris (like Sun ld) isn't capable of merging
2721     # read-only and read-write sections, we need to make sure that the
2722     # assembler used emits read-write .eh_frame sections.
2723     if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2724       if test "x$gcc_cv_objdump" != x; then
2725         if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2726                 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2727           gcc_cv_as_cfi_directive=no
2728         else
2729           case "$target" in
2730             i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*)
2731               # On Solaris/x86, make sure that GCC and assembler agree on using
2732               # read-only .eh_frame sections for 64-bit.
2733               if test x$gas = xyes; then
2734                  as_ix86_64_opt="--64"
2735               else
2736                  as_ix86_64_opt="-xarch=amd64"
2737               fi
2738               if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \
2739                 $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2740                         sed -e /.eh_frame/!d -e N | \
2741                         grep READONLY > /dev/null; then
2742                 gcc_cv_as_cfi_directive=yes
2743               else
2744                 gcc_cv_as_cfi_directive=no
2745               fi
2746               ;;
2747             *)
2748               gcc_cv_as_cfi_directive=yes
2749               ;;
2750           esac
2751         fi
2752       else
2753         # no objdump, err on the side of caution
2754         gcc_cv_as_cfi_directive=no
2755       fi
2756     else
2757       gcc_cv_as_cfi_directive=yes
2758     fi
2759     ;;
2760   *-*-*)
2761     gcc_cv_as_cfi_directive=yes
2762     ;;
2763 esac])
2764 if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then
2765 gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working,
2766   ,,
2767 [       .text
2768         .cfi_startproc
2769         .cfi_adjust_cfa_offset 64
2770         .skip 75040, 0
2771         .cfi_adjust_cfa_offset 128
2772         .cfi_endproc],
2773 [[
2774 if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \
2775     | grep 'DW_CFA_advance_loc[24]:[    ][      ]*75040[        ]' >/dev/null; then
2776    gcc_cv_as_cfi_advance_working=yes
2777 fi
2778 ]])
2779 else
2780   # no objdump, err on the side of caution
2781   gcc_cv_as_cfi_advance_working=no
2782 fi
2783 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE)
2784 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2785   [`if test $gcc_cv_as_cfi_directive = yes \
2786        && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`],
2787   [Define 0/1 if your assembler supports CFI directives.])
2788
2789 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE)
2790 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2791   gcc_cv_as_cfi_personality_directive, ,,
2792 [       .text
2793         .cfi_startproc
2794         .cfi_personality 0, symbol
2795         .cfi_endproc])
2796 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2797   [`if test $gcc_cv_as_cfi_personality_directive = yes;
2798     then echo 1; else echo 0; fi`],
2799   [Define 0/1 if your assembler supports .cfi_personality.])
2800
2801 gcc_GAS_CHECK_FEATURE([cfi sections directive],
2802   gcc_cv_as_cfi_sections_directive, ,,
2803 [       .text
2804         .cfi_sections .debug_frame, .eh_frame
2805         .cfi_startproc
2806         .cfi_endproc],
2807 [case $target_os in
2808   win32 | pe | cygwin* | mingw32*)
2809     # Need to check that we generated the correct relocation for the
2810     # .debug_frame section.  This was fixed for binutils 2.21.
2811     gcc_cv_as_cfi_sections_directive=no
2812     if test "x$gcc_cv_objdump" != x; then
2813      if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \
2814         grep secrel > /dev/null; then
2815       gcc_cv_as_cfi_sections_directive=yes
2816      fi
2817     fi
2818     ;;
2819   *)
2820     gcc_cv_as_cfi_sections_directive=yes
2821     ;;
2822 esac])
2823 GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE)
2824 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE,
2825   [`if test $gcc_cv_as_cfi_sections_directive = yes;
2826     then echo 1; else echo 0; fi`],
2827   [Define 0/1 if your assembler supports .cfi_sections.])
2828
2829 # GAS versions up to and including 2.11.0 may mis-optimize
2830 # .eh_frame data.
2831 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2832   [elf,2,12,0],,
2833 [       .text
2834 .LFB1:
2835         .4byte  0
2836 .L1:
2837         .4byte  0
2838 .LFE1:
2839         .section        .eh_frame,"aw",@progbits
2840 __FRAME_BEGIN__:
2841         .4byte  .LECIE1-.LSCIE1
2842 .LSCIE1:
2843         .4byte  0x0
2844         .byte   0x1
2845         .ascii "z\0"
2846         .byte   0x1
2847         .byte   0x78
2848         .byte   0x1a
2849         .byte   0x0
2850         .byte   0x4
2851         .4byte  1
2852         .p2align 1
2853 .LECIE1:
2854 .LSFDE1:
2855         .4byte  .LEFDE1-.LASFDE1
2856 .LASFDE1:
2857         .4byte  .LASFDE1-__FRAME_BEGIN__
2858         .4byte  .LFB1
2859         .4byte  .LFE1-.LFB1
2860         .byte   0x4
2861         .4byte  .LFE1-.LFB1
2862         .byte   0x4
2863         .4byte  .L1-.LFB1
2864 .LEFDE1:],
2865 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2866 cat > conftest.lit <<EOF
2867  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2868  0010 01000000 12000000 18000000 00000000  ................
2869  0020 08000000 04080000 0044               .........D      @&t@
2870 EOF
2871 cat > conftest.big <<EOF
2872  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2873  0010 00000001 00000012 00000018 00000000  ................
2874  0020 00000008 04000000 0844               .........D      @&t@
2875 EOF
2876   # If the assembler didn't choke, and we can objdump,
2877   # and we got the correct data, then succeed.
2878   # The text in the here-document typically retains its unix-style line
2879   # endings, while the output of objdump will use host line endings.
2880   # Therefore, use diff -b for the comparisons.
2881   if test x$gcc_cv_objdump != x \
2882   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2883      | tail -3 > conftest.got \
2884   && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2885     || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2886   then
2887     gcc_cv_as_eh_frame=yes
2888   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2889     gcc_cv_as_eh_frame=buggy
2890   else
2891     # Uh oh, what do we do now?
2892     gcc_cv_as_eh_frame=no
2893   fi])
2894
2895 if test $gcc_cv_as_eh_frame = buggy; then
2896   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2897   [Define if your assembler mis-optimizes .eh_frame data.])
2898 fi
2899
2900 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2901  [elf,2,12,0], [--fatal-warnings],
2902  [.section .rodata.str, "aMS", @progbits, 1])
2903 if test $gcc_cv_as_shf_merge = no; then
2904   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2905     [elf,2,12,0], [--fatal-warnings],
2906     [.section .rodata.str, "aMS", %progbits, 1])
2907 fi
2908 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2909   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2910 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2911
2912 gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,,
2913 [.stabs "gcc2_compiled.",60,0,0,0],,
2914 [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1,
2915   [Define if your assembler supports .stabs.])])
2916
2917 gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)],
2918  gcc_cv_as_comdat_group,
2919  [elf,2,16,0], [--fatal-warnings],
2920  [.section .text,"axG",@progbits,.foo,comdat])
2921 if test $gcc_cv_as_comdat_group = yes; then
2922   gcc_cv_as_comdat_group_percent=no
2923   gcc_cv_as_comdat_group_group=no
2924 else
2925  gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)],
2926    gcc_cv_as_comdat_group_percent,
2927    [elf,2,16,0], [--fatal-warnings],
2928    [.section .text,"axG",%progbits,.foo,comdat])
2929  if test $gcc_cv_as_comdat_group_percent = yes; then
2930    gcc_cv_as_comdat_group_group=no
2931  else
2932    case "${target}" in
2933      # Sun as uses a completely different syntax.
2934      *-*-solaris2*)
2935        case "${target}" in
2936          sparc*-*-solaris2*)
2937            conftest_s='
2938                .group foo,".text%foo",#comdat
2939                .section ".text%foo", #alloc,#execinstr,#progbits
2940                .globl foo
2941              foo:
2942              '
2943            ;;
2944          i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
2945            conftest_s='
2946                .group foo,.text%foo,#comdat
2947                .section .text%foo, "ax", @progbits
2948                .globl  foo
2949              foo:
2950              '
2951            ;;
2952        esac
2953        gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)],
2954          gcc_cv_as_comdat_group_group,
2955          ,, [$conftest_s])
2956        ;;
2957    esac
2958    if test -z "${gcc_cv_as_comdat_group_group+set}"; then
2959      gcc_cv_as_comdat_group_group=no
2960    fi
2961  fi
2962 fi
2963 if test x"$ld_is_gold" = xyes; then
2964   comdat_group=yes
2965 elif test $in_tree_ld = yes ; then
2966   comdat_group=no
2967   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2968      && test $in_tree_ld_is_elf = yes; then
2969      comdat_group=yes
2970   fi
2971 elif echo "$ld_ver" | grep GNU > /dev/null; then
2972   comdat_group=yes
2973   if test 0"$ld_date" -lt 20050308; then
2974     if test -n "$ld_date"; then
2975       # If there was date string, but was earlier than 2005-03-08, fail
2976       comdat_group=no
2977     elif test "$ld_vers_major" -lt 2; then
2978       comdat_group=no
2979     elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2980       comdat_group=no
2981     fi
2982   fi
2983 else
2984 changequote(,)dnl
2985   case "${target}" in
2986     *-*-solaris2.1[1-9]*)
2987       comdat_group=no
2988       # Sun ld has COMDAT group support since Solaris 9, but it doesn't
2989       # interoperate with GNU as until Solaris 11 build 130, i.e. ld
2990       # version 1.688.
2991       #
2992       # If using Sun as for COMDAT group as emitted by GCC, one needs at
2993       # least ld version 1.2267.
2994       if test "$ld_vers_major" -gt 1; then
2995         comdat_group=yes
2996       elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then
2997         comdat_group=yes
2998       elif test "$ld_vers_minor" -ge 2267; then
2999         comdat_group=yes
3000       fi
3001       ;;
3002     *)
3003       # Assume linkers other than GNU ld don't support COMDAT group.
3004       comdat_group=no
3005       ;;
3006   esac
3007 changequote([,])dnl
3008 fi
3009 # Allow overriding the automatic COMDAT group tests above.
3010 AC_ARG_ENABLE(comdat,
3011   [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])],
3012   [comdat_group="$enable_comdat"])
3013 if test $comdat_group = no; then
3014   gcc_cv_as_comdat_group=no
3015   gcc_cv_as_comdat_group_percent=no
3016   gcc_cv_as_comdat_group_group=no
3017 fi
3018 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
3019   [`if test $gcc_cv_as_comdat_group = yes \
3020     || test $gcc_cv_as_comdat_group_percent = yes \
3021     || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`],
3022 [Define 0/1 if your assembler and linker support COMDAT groups.])
3023
3024 gcc_GAS_CHECK_FEATURE([line table discriminator support],
3025  gcc_cv_as_discriminator,
3026  [2,19,51],,
3027 [       .text
3028         .file 1 "conf.c"
3029         .loc 1 1 0 discriminator 1],,
3030 [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
3031   [Define if your assembler supports the .loc discriminator sub-directive.])])
3032
3033 # Thread-local storage - the check is heavily parameterized.
3034 conftest_s=
3035 tls_first_major=
3036 tls_first_minor=
3037 tls_as_opt=
3038 case "$target" in
3039 changequote(,)dnl
3040   alpha*-*-*)
3041     conftest_s='
3042         .section ".tdata","awT",@progbits
3043 foo:    .long   25
3044         .text
3045         ldq     $27,__tls_get_addr($29)         !literal!1
3046         lda     $16,foo($29)                    !tlsgd!1
3047         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
3048         ldq     $27,__tls_get_addr($29)         !literal!2
3049         lda     $16,foo($29)                    !tlsldm!2
3050         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
3051         ldq     $1,foo($29)                     !gotdtprel
3052         ldah    $2,foo($29)                     !dtprelhi
3053         lda     $3,foo($2)                      !dtprello
3054         lda     $4,foo($29)                     !dtprel
3055         ldq     $1,foo($29)                     !gottprel
3056         ldah    $2,foo($29)                     !tprelhi
3057         lda     $3,foo($2)                      !tprello
3058         lda     $4,foo($29)                     !tprel'
3059         tls_first_major=2
3060         tls_first_minor=13
3061         tls_as_opt=--fatal-warnings
3062         ;;
3063   cris-*-*|crisv32-*-*)
3064     conftest_s='
3065         .section ".tdata","awT",@progbits
3066 x:      .long   25
3067         .text
3068         move.d x:IE,$r10
3069         nop'
3070         tls_first_major=2
3071         tls_first_minor=20
3072         tls_as_opt=--fatal-warnings
3073         ;;
3074   frv*-*-*)
3075     conftest_s='
3076         .section ".tdata","awT",@progbits
3077 x:      .long   25
3078         .text
3079         call    #gettlsoff(x)'
3080         tls_first_major=2
3081         tls_first_minor=14
3082         ;;
3083   hppa*-*-linux*)
3084     conftest_s='
3085 t1:     .reg    %r20
3086 t2:     .reg    %r21
3087 gp:     .reg    %r19
3088         .section ".tdata","awT",@progbits
3089 foo:    .long   25
3090         .text
3091         .align  4
3092         addil LT%foo-$tls_gdidx$,gp
3093         ldo RT%foo-$tls_gdidx$(%r1),%arg0
3094         b __tls_get_addr
3095         nop
3096         addil LT%foo-$tls_ldidx$,gp
3097         b __tls_get_addr
3098         ldo RT%foo-$tls_ldidx$(%r1),%arg0
3099         addil LR%foo-$tls_dtpoff$,%ret0
3100         ldo RR%foo-$tls_dtpoff$(%r1),%t1
3101         mfctl %cr27,%t1
3102         addil LT%foo-$tls_ieoff$,gp
3103         ldw RT%foo-$tls_ieoff$(%r1),%t2
3104         add %t1,%t2,%t3
3105         mfctl %cr27,%t1
3106         addil LR%foo-$tls_leoff$,%t1
3107         ldo RR%foo-$tls_leoff$(%r1),%t2'
3108         tls_first_major=2
3109         tls_first_minor=15
3110         tls_as_opt=--fatal-warnings
3111         ;;
3112   arm*-*-*)
3113     conftest_s='
3114         .section ".tdata","awT",%progbits
3115 foo:    .long   25
3116         .text
3117 .word foo(gottpoff)
3118 .word foo(tpoff)
3119 .word foo(tlsgd)
3120 .word foo(tlsldm)
3121 .word foo(tlsldo)'
3122         tls_first_major=2
3123         tls_first_minor=17
3124         ;;
3125   i[34567]86-*-* | x86_64-*-*)
3126     case "$target" in
3127       i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*)
3128         on_solaris=yes
3129         ;;
3130       *)
3131         on_solaris=no
3132         ;;
3133     esac
3134     if test x$on_solaris = xyes && test x$gas_flag = xno; then
3135       conftest_s='
3136         .section .tdata,"awt",@progbits'
3137       tls_first_major=0
3138       tls_first_minor=0
3139       tls_section_flag=t
3140 changequote([,])dnl
3141       AC_DEFINE(TLS_SECTION_ASM_FLAG, 't',
3142 [Define to the flag used to mark TLS sections if the default (`T') doesn't work.])
3143 changequote(,)dnl
3144     else
3145       conftest_s='
3146         .section ".tdata","awT",@progbits'
3147       tls_first_major=2
3148       tls_first_minor=14
3149       tls_section_flag=T
3150       tls_as_opt="--fatal-warnings"
3151     fi
3152     case "$target" in
3153       i[34567]86-*-*)
3154         conftest_s="$conftest_s
3155 foo:    .long   25
3156         .text
3157         movl    %gs:0, %eax
3158         leal    foo@tlsgd(,%ebx,1), %eax
3159         leal    foo@tlsldm(%ebx), %eax
3160         leal    foo@dtpoff(%eax), %edx
3161         movl    foo@gottpoff(%ebx), %eax
3162         subl    foo@gottpoff(%ebx), %eax
3163         addl    foo@gotntpoff(%ebx), %eax
3164         movl    foo@indntpoff, %eax
3165         movl    \$foo@tpoff, %eax
3166         subl    \$foo@tpoff, %eax
3167         leal    foo@ntpoff(%ecx), %eax"
3168         ;;
3169       x86_64-*-*)
3170         if test x$on_solaris = xyes; then
3171           case $gas_flag in
3172             yes) tls_as_opt="$tls_as_opt --64" ;;
3173             no)  tls_as_opt="$tls_as_opt -xarch=amd64" ;;
3174           esac
3175         fi
3176         conftest_s="$conftest_s
3177 foo:    .long   25
3178         .text
3179         movq    %fs:0, %rax
3180         leaq    foo@tlsgd(%rip), %rdi
3181         leaq    foo@tlsld(%rip), %rdi
3182         leaq    foo@dtpoff(%rax), %rdx
3183         movq    foo@gottpoff(%rip), %rax
3184         movq    \$foo@tpoff, %rax"
3185         ;;
3186     esac
3187     ;;
3188   ia64-*-*)
3189     conftest_s='
3190         .section ".tdata","awT",@progbits
3191 foo:    data8   25
3192         .text
3193         addl    r16 = @ltoff(@dtpmod(foo#)), gp
3194         addl    r17 = @ltoff(@dtprel(foo#)), gp
3195         addl    r18 = @ltoff(@tprel(foo#)), gp
3196         addl    r19 = @dtprel(foo#), gp
3197         adds    r21 = @dtprel(foo#), r13
3198         movl    r23 = @dtprel(foo#)
3199         addl    r20 = @tprel(foo#), gp
3200         adds    r22 = @tprel(foo#), r13
3201         movl    r24 = @tprel(foo#)'
3202         tls_first_major=2
3203         tls_first_minor=13
3204         tls_as_opt=--fatal-warnings
3205         ;;
3206   microblaze*-*-*)
3207     conftest_s='
3208         .section .tdata,"awT",@progbits
3209 x:
3210         .word 2
3211         .text
3212         addik r5,r20,x@TLSGD
3213         addik r5,r20,x@TLSLDM'
3214         tls_first_major=2
3215         tls_first_minor=20
3216         tls_as_opt='--fatal-warnings'
3217         ;;
3218   mips*-*-*)
3219     conftest_s='
3220         .section .tdata,"awT",@progbits
3221 x:
3222         .word 2
3223         .text
3224         addiu $4, $28, %tlsgd(x)
3225         addiu $4, $28, %tlsldm(x)
3226         lui $4, %dtprel_hi(x)
3227         addiu $4, $4, %dtprel_lo(x)
3228         lw $4, %gottprel(x)($28)
3229         lui $4, %tprel_hi(x)
3230         addiu $4, $4, %tprel_lo(x)'
3231         tls_first_major=2
3232         tls_first_minor=16
3233         tls_as_opt='-32 --fatal-warnings'
3234         ;;
3235   m68k-*-*)
3236     conftest_s='
3237         .section .tdata,"awT",@progbits
3238 x:
3239         .word 2
3240         .text
3241 foo:
3242         move.l x@TLSGD(%a5),%a0
3243         move.l x@TLSLDM(%a5),%a0
3244         move.l x@TLSLDO(%a5),%a0
3245         move.l x@TLSIE(%a5),%a0
3246         move.l x@TLSLE(%a5),%a0'
3247         tls_first_major=2
3248         tls_first_minor=19
3249         tls_as_opt='--fatal-warnings'
3250         ;;
3251   nios2-*-*)
3252       conftest_s='
3253         .section ".tdata","awT",@progbits'
3254         tls_first_major=2
3255         tls_first_minor=23
3256         tls_as_opt="--fatal-warnings"
3257         ;;
3258   aarch64*-*-*)
3259     conftest_s='
3260         .section ".tdata","awT",%progbits
3261 foo:    .long   25
3262         .text
3263         adrp  x0, :tlsgd:x
3264         add   x0, x0, #:tlsgd_lo12:x
3265         bl    __tls_get_addr
3266         nop'
3267         tls_first_major=2
3268         tls_first_minor=20
3269         tls_as_opt='--fatal-warnings'
3270         ;;
3271   powerpc-ibm-aix*)
3272     conftest_s='
3273         .extern __get_tpointer
3274         .toc
3275 LC..1:
3276         .tc a[TC],a[TL]@le
3277         .csect .text[PR]
3278 .tlstest:
3279         lwz 9,LC..1(2)
3280         bla __get_tpointer
3281         lwzx 3,9,3
3282         .globl a
3283         .csect a[TL],4
3284 a:
3285         .space 4'
3286         tls_first_major=0
3287         tls_first_minor=0
3288         ;;
3289   powerpc64*-*-*)
3290     conftest_s='
3291         .section ".tdata","awT",@progbits
3292         .align 3
3293 ld0:    .space 8
3294 ld1:    .space 8
3295 x1:     .space 8
3296 x2:     .space 8
3297 x3:     .space 8
3298         .text
3299         addi 3,2,ld0@got@tlsgd
3300         bl .__tls_get_addr
3301         nop
3302         addi 3,2,ld1@toc
3303         bl .__tls_get_addr
3304         nop
3305         addi 3,2,x1@got@tlsld
3306         bl .__tls_get_addr
3307         nop
3308         addi 9,3,x1@dtprel
3309         bl .__tls_get_addr
3310         nop
3311         addis 9,3,x2@dtprel@ha
3312         addi 9,9,x2@dtprel@l
3313         bl .__tls_get_addr
3314         nop
3315         ld 9,x3@got@dtprel(2)
3316         add 9,9,3
3317         bl .__tls_get_addr
3318         nop'
3319         tls_first_major=2
3320         tls_first_minor=14
3321         tls_as_opt="-a64 --fatal-warnings"
3322         ;;
3323   powerpc*-*-*)
3324     conftest_s='
3325         .section ".tdata","awT",@progbits
3326         .align 2
3327 ld0:    .space 4
3328 ld1:    .space 4
3329 x1:     .space 4
3330 x2:     .space 4
3331 x3:     .space 4
3332         .text
3333         addi 3,31,ld0@got@tlsgd
3334         bl __tls_get_addr
3335         addi 3,31,x1@got@tlsld
3336         bl __tls_get_addr
3337         addi 9,3,x1@dtprel
3338         addis 9,3,x2@dtprel@ha
3339         addi 9,9,x2@dtprel@l
3340         lwz 9,x3@got@tprel(31)
3341         add 9,9,x@tls
3342         addi 9,2,x1@tprel
3343         addis 9,2,x2@tprel@ha
3344         addi 9,9,x2@tprel@l'
3345         tls_first_major=2
3346         tls_first_minor=14
3347         tls_as_opt="-a32 --fatal-warnings"
3348         ;;
3349   s390-*-*)
3350     conftest_s='
3351         .section ".tdata","awT",@progbits
3352 foo:    .long   25
3353         .text
3354         .long   foo@TLSGD
3355         .long   foo@TLSLDM
3356         .long   foo@DTPOFF
3357         .long   foo@NTPOFF
3358         .long   foo@GOTNTPOFF
3359         .long   foo@INDNTPOFF
3360         l       %r1,foo@GOTNTPOFF(%r12)
3361         l       %r1,0(%r1):tls_load:foo
3362         bas     %r14,0(%r1,%r13):tls_gdcall:foo
3363         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
3364         tls_first_major=2
3365         tls_first_minor=14
3366         tls_as_opt="-m31 --fatal-warnings"
3367         ;;
3368   s390x-*-*)
3369     conftest_s='
3370         .section ".tdata","awT",@progbits
3371 foo:    .long   25
3372         .text
3373         .quad   foo@TLSGD
3374         .quad   foo@TLSLDM
3375         .quad   foo@DTPOFF
3376         .quad   foo@NTPOFF
3377         .quad   foo@GOTNTPOFF
3378         lg      %r1,foo@GOTNTPOFF(%r12)
3379         larl    %r1,foo@INDNTPOFF
3380         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
3381         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
3382         tls_first_major=2
3383         tls_first_minor=14
3384         tls_as_opt="-m64 -Aesame --fatal-warnings"
3385         ;;
3386   sh-*-* | sh[123456789lbe]*-*-*)
3387     conftest_s='
3388         .section ".tdata","awT",@progbits
3389 foo:    .long   25
3390         .text
3391         .long   foo@TLSGD
3392         .long   foo@TLSLDM
3393         .long   foo@DTPOFF
3394         .long   foo@GOTTPOFF
3395         .long   foo@TPOFF'
3396         tls_first_major=2
3397         tls_first_minor=13
3398         tls_as_opt=--fatal-warnings
3399         ;;
3400   sparc*-*-*)
3401     case "$target" in
3402       sparc*-sun-solaris2.*)
3403         on_solaris=yes
3404         ;;
3405       *)
3406         on_solaris=no
3407         ;;
3408     esac
3409     if test x$on_solaris = xyes && test x$gas_flag = xno; then
3410       conftest_s='
3411         .section ".tdata",#alloc,#write,#tls'
3412         tls_first_major=0
3413         tls_first_minor=0
3414     else
3415       conftest_s='
3416         .section ".tdata","awT",@progbits'
3417         tls_first_major=2
3418         tls_first_minor=14
3419         tls_as_opt="-32 --fatal-warnings"
3420     fi
3421     conftest_s="$conftest_s
3422 foo:    .long   25
3423         .text
3424         sethi   %tgd_hi22(foo), %o0
3425         add     %o0, %tgd_lo10(foo), %o1
3426         add     %l7, %o1, %o0, %tgd_add(foo)
3427         call    __tls_get_addr, %tgd_call(foo)
3428         sethi   %tldm_hi22(foo), %l1
3429         add     %l1, %tldm_lo10(foo), %l2
3430         add     %l7, %l2, %o0, %tldm_add(foo)
3431         call    __tls_get_addr, %tldm_call(foo)
3432         sethi   %tldo_hix22(foo), %l3
3433         xor     %l3, %tldo_lox10(foo), %l4
3434         add     %o0, %l4, %l5, %tldo_add(foo)
3435         sethi   %tie_hi22(foo), %o3
3436         add     %o3, %tie_lo10(foo), %o3
3437         ld      [%l7 + %o3], %o2, %tie_ld(foo)
3438         add     %g7, %o2, %o4, %tie_add(foo)
3439         sethi   %tle_hix22(foo), %l1
3440         xor     %l1, %tle_lox10(foo), %o5
3441         ld      [%g7 + %o5], %o1"
3442         ;;
3443   tilepro*-*-*)
3444       conftest_s='
3445         .section ".tdata","awT",@progbits
3446 foo:    .long   25
3447         .text
3448         addli   r0, zero, tls_gd(foo)
3449         auli    r0, zero, tls_gd_ha16(foo)
3450         addli   r0, r0, tls_gd_lo16(foo)
3451         jal     __tls_get_addr
3452         addli   r0, zero, tls_ie(foo)
3453         auli    r0, r0, tls_ie_ha16(foo)
3454         addli   r0, r0, tls_ie_lo16(foo)'
3455         tls_first_major=2
3456         tls_first_minor=22
3457         tls_as_opt="--fatal-warnings"
3458         ;;
3459   tilegx*-*-*)
3460       conftest_s='
3461         .section ".tdata","awT",@progbits
3462 foo:    .long   25
3463         .text
3464         shl16insli r0, zero, hw0_last_tls_gd(foo)
3465         shl16insli r0, zero, hw1_last_tls_gd(foo)
3466         shl16insli r0, r0,   hw0_tls_gd(foo)
3467         jal        __tls_get_addr
3468         shl16insli r0, zero, hw1_last_tls_ie(foo)
3469         shl16insli r0, r0,   hw0_tls_ie(foo)'
3470         tls_first_major=2
3471         tls_first_minor=22
3472         tls_as_opt="--fatal-warnings"
3473         ;;
3474   xtensa*-*-*)
3475     conftest_s='
3476         .section ".tdata","awT",@progbits
3477 foo:    .long   25
3478         .text
3479         movi    a8, foo@TLSFUNC
3480         movi    a10, foo@TLSARG
3481         callx8.tls a8, foo@TLSCALL'
3482         tls_first_major=2
3483         tls_first_minor=19
3484         ;;
3485 changequote([,])dnl
3486 esac
3487 set_have_as_tls=no
3488 if test "x$enable_tls" = xno ; then
3489   : # TLS explicitly disabled.
3490 elif test "x$enable_tls" = xyes ; then
3491   set_have_as_tls=yes # TLS explicitly enabled.
3492 elif test -z "$tls_first_major"; then
3493   : # If we don't have a check, assume no support.
3494 else
3495   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
3496   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
3497   [set_have_as_tls=yes])
3498 fi
3499 if test $set_have_as_tls = yes ; then
3500   AC_DEFINE(HAVE_AS_TLS, 1,
3501             [Define if your assembler and linker support thread-local storage.])
3502 fi
3503
3504 # Target-specific assembler checks.
3505
3506 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
3507 gcc_cv_ld_static_dynamic=no
3508 gcc_cv_ld_static_option='-Bstatic'
3509 gcc_cv_ld_dynamic_option='-Bdynamic'
3510 if test $in_tree_ld = yes ; then
3511   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then
3512     gcc_cv_ld_static_dynamic=yes
3513   fi
3514 elif test x$gcc_cv_ld != x; then
3515   # Check if linker supports -Bstatic/-Bdynamic option
3516   if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
3517      && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
3518       gcc_cv_ld_static_dynamic=yes
3519   else
3520     case "$target" in
3521       # AIX ld uses -b flags
3522       *-*-aix4.[[23]]* | *-*-aix[[5-9]]*)
3523         gcc_cv_ld_static_dynamic=yes
3524         gcc_cv_ld_static_option="-bstatic"
3525         gcc_cv_ld_dynamic_option="-bdynamic"
3526         ;;
3527       # HP-UX ld uses -a flags to select between shared and archive.
3528       *-*-hpux*)
3529         if test x"$gnu_ld" = xno; then
3530           gcc_cv_ld_static_dynamic=yes
3531           gcc_cv_ld_static_option="-aarchive_shared"
3532           gcc_cv_ld_dynamic_option="-adefault"
3533         fi
3534         ;;
3535       # Solaris 2 ld always supports -Bstatic/-Bdynamic.
3536       *-*-solaris2*)
3537         gcc_cv_ld_static_dynamic=yes
3538         ;;
3539     esac
3540   fi
3541 fi
3542 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
3543         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
3544 [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.])
3545         AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option",
3546 [Define to the linker option to disable use of shared objects.])
3547         AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option",
3548 [Define to the linker option to enable use of shared objects.])
3549 fi
3550 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
3551
3552 if test x"$demangler_in_ld" = xyes; then
3553   AC_MSG_CHECKING(linker --demangle support)
3554   gcc_cv_ld_demangle=no
3555   if test $in_tree_ld = yes; then
3556     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
3557       gcc_cv_ld_demangle=yes
3558     fi
3559   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
3560     # Check if the GNU linker supports --demangle option
3561     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
3562       gcc_cv_ld_demangle=yes
3563     fi
3564   fi
3565   if test x"$gcc_cv_ld_demangle" = xyes; then
3566     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
3567 [Define if your linker supports --demangle option.])
3568   fi
3569   AC_MSG_RESULT($gcc_cv_ld_demangle)
3570 fi
3571
3572 AC_MSG_CHECKING(linker plugin support)
3573 gcc_cv_lto_plugin=0
3574 if test -f liblto_plugin.la; then
3575   save_ld_ver="$ld_ver"
3576   save_ld_vers_major="$ld_vers_major"
3577   save_ld_vers_minor="$ld_vers_minor"
3578   save_ld_is_gold="$ld_is_gold"
3579
3580   ld_is_gold=no
3581
3582   if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then
3583     ld_ver="GNU ld"
3584     # FIXME: ld_is_gold?
3585     ld_vers_major="$gcc_cv_gld_major_version"
3586     ld_vers_minor="$gcc_cv_gld_minor_version"
3587   else
3588     # Determine plugin linker version.
3589     # FIXME: Partial duplicate from above, generalize.
3590 changequote(,)dnl
3591     ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q`
3592     if echo "$ld_ver" | grep GNU > /dev/null; then
3593       if echo "$ld_ver" | grep "GNU gold" > /dev/null; then
3594         ld_is_gold=yes
3595         ld_vers=`echo $ld_ver | sed -n \
3596             -e 's,^[^)]*[        ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'`
3597       else
3598         ld_vers=`echo $ld_ver | sed -n \
3599             -e 's,^.*[   ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
3600       fi
3601       ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
3602       ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
3603     fi
3604 changequote([,])dnl
3605   fi
3606
3607   # Determine plugin support.
3608   if echo "$ld_ver" | grep GNU > /dev/null; then
3609     # Require GNU ld or gold 2.21+ for plugin support by default.
3610     if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then
3611       gcc_cv_lto_plugin=2
3612     # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20.
3613     elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then
3614       gcc_cv_lto_plugin=1
3615     fi
3616   fi
3617
3618   ld_ver="$save_ld_ver"
3619   ld_vers_major="$save_ld_vers_major"
3620   ld_vers_minor="$save_ld_vers_minor"
3621   ld_is_gold="$save_ld_is_gold"
3622 fi
3623 AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
3624   [Define to the level of your linker's plugin support.])
3625 AC_MSG_RESULT($gcc_cv_lto_plugin)
3626
3627 case "$target" in
3628   aarch64*-*-*)
3629     gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
3630                           [-mabi=lp64], [.text],,,)
3631     if test x$gcc_cv_as_aarch64_mabi = xyes; then
3632       AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
3633                 [Define if your assembler supports the -mabi option.])
3634     else
3635       if test x$with_abi = xilp32; then
3636         AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3637                      Upgrade the Assembler.])
3638       fi
3639       if test x"$with_multilib_list" = xdefault; then
3640         TM_MULTILIB_CONFIG=lp64
3641       else
3642         aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
3643         for aarch64_multilib in ${aarch64_multilibs}; do
3644           case ${aarch64_multilib} in
3645             ilp32)
3646               AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
3647                             Upgrade the Assembler.])
3648               ;;
3649             *)
3650               ;;
3651           esac
3652         done
3653       fi
3654     fi
3655     # Check if we have binutils support for relocations types needed by -fpic
3656     gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,,
3657     [
3658         .text
3659         ldr     x0, [[x2, #:gotpage_lo15:globalsym]]
3660     ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1,
3661         [Define if your assembler supports relocs needed by -fpic.])])
3662     # Enable default workaround for AArch64 Cortex-A53 erratum 835769.
3663     AC_ARG_ENABLE(fix-cortex-a53-835769,
3664     [
3665 AS_HELP_STRING([--enable-fix-cortex-a53-835769],
3666         [enable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3667 AS_HELP_STRING([--disable-fix-cortex-a53-835769],
3668         [disable workaround for AArch64 Cortex-A53 erratum 835769 by default])
3669     ],
3670       [
3671         case $enableval in
3672           yes)
3673             tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1"
3674             ;;
3675           no)
3676             ;;
3677           *)
3678             AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\
3679   Valid choices are 'yes' and 'no'.])
3680             ;;
3681
3682         esac
3683       ],
3684     [])
3685     # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
3686     AC_ARG_ENABLE(fix-cortex-a53-843419,
3687     [
3688 AS_HELP_STRING([--enable-fix-cortex-a53-843419],
3689         [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3690 AS_HELP_STRING([--disable-fix-cortex-a53-843419],
3691         [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
3692     ],
3693       [
3694         case $enableval in
3695           yes)
3696             tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
3697             ;;
3698           no)
3699             ;;
3700           *)
3701             AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
3702   Valid choices are 'yes' and 'no'.])
3703             ;;
3704
3705         esac
3706       ],
3707     [])
3708     ;;
3709
3710   # All TARGET_ABI_OSF targets.
3711   alpha*-*-linux* | alpha*-*-*bsd*)
3712     gcc_GAS_CHECK_FEATURE([explicit relocation support],
3713         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
3714 [       .set nomacro
3715         .text
3716         extbl   $3, $2, $3      !lituse_bytoff!1
3717         ldq     $2, a($29)      !literal!1
3718         ldq     $4, b($29)      !literal!2
3719         ldq_u   $3, 0($2)       !lituse_base!1
3720         ldq     $27, f($29)     !literal!5
3721         jsr     $26, ($27), f   !lituse_jsr!5
3722         ldah    $29, 0($26)     !gpdisp!3
3723         lda     $0, c($29)      !gprel
3724         ldah    $1, d($29)      !gprelhigh
3725         lda     $1, d($1)       !gprellow
3726         lda     $29, 0($29)     !gpdisp!3],,
3727     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
3728   [Define if your assembler supports explicit relocations.])])
3729     gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
3730         gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
3731 [       .set nomacro
3732         .text
3733         ldq     $27, a($29)     !literal!1
3734         jsr     $26, ($27), a   !lituse_jsrdirect!1],,
3735     [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
3736   [Define if your assembler supports the lituse_jsrdirect relocation.])])
3737     ;;
3738
3739   avr-*-*)
3740     gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
3741       [--mlink-relax], [.text],,
3742       [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
3743                 [Define if your avr assembler supports --mlink-relax option.])])
3744
3745     gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
3746       [-mrmw], [.text],,
3747       [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
3748                 [Define if your avr assembler supports -mrmw option.])])
3749     ;;
3750
3751   cris-*-*)
3752     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
3753       gcc_cv_as_cris_no_mul_bug,[2,15,91],
3754       [-no-mul-bug-abort], [.text],,
3755       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
3756                 [Define if your assembler supports the -no-mul-bug-abort option.])])
3757     ;;
3758
3759   sparc*-*-*)
3760     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
3761       [.register %g2, #scratch],,
3762       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
3763                 [Define if your assembler supports .register.])])
3764
3765     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
3766       [-relax], [.text],,
3767       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
3768                 [Define if your assembler supports -relax option.])])
3769
3770     gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs],
3771       gcc_cv_as_sparc_gotdata_op,,
3772       [-K PIC],
3773 [.text
3774 .align 4
3775 foo:
3776         nop
3777 bar:
3778         sethi %gdop_hix22(foo), %g1
3779         xor    %g1, %gdop_lox10(foo), %g1
3780         ld    [[%l7 + %g1]], %g2, %gdop(foo)],
3781       [if test x$gcc_cv_ld != x \
3782        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3783          if test x$gcc_cv_objdump != x; then
3784            if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \
3785               | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then
3786                gcc_cv_as_sparc_gotdata_op=no
3787            else
3788                gcc_cv_as_sparc_gotdata_op=yes
3789            fi
3790          fi
3791        fi
3792        rm -f conftest],
3793       [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1,
3794                 [Define if your assembler and linker support GOTDATA_OP relocs.])])
3795
3796     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
3797       gcc_cv_as_sparc_ua_pcrel,,
3798       [-K PIC],
3799 [.text
3800 foo:
3801         nop
3802 .data
3803 .align 4
3804 .byte 0
3805 .uaword %r_disp32(foo)],
3806       [if test x$gcc_cv_ld != x \
3807        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
3808          gcc_cv_as_sparc_ua_pcrel=yes
3809        fi
3810        rm -f conftest],
3811       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
3812                 [Define if your assembler and linker support unaligned PC relative relocs.])
3813
3814       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
3815         gcc_cv_as_sparc_ua_pcrel_hidden,,
3816         [-K PIC],
3817 [.data
3818 .align 4
3819 .byte 0x31
3820 .uaword %r_disp32(foo)
3821 .byte 0x32, 0x33, 0x34
3822 .global foo
3823 .hidden foo
3824 foo:
3825 .skip 4],
3826         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
3827          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
3828          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
3829             | grep ' 31000000 07323334' > /dev/null 2>&1; then
3830             if $gcc_cv_objdump -R conftest 2> /dev/null \
3831                | grep 'DISP32' > /dev/null 2>&1; then
3832                 :
3833             else
3834                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
3835             fi
3836          fi
3837          rm -f conftest],
3838          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
3839                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
3840     ]) # unaligned pcrel relocs
3841
3842     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
3843       gcc_cv_as_sparc_offsetable_lo10,,
3844       [-xarch=v9],
3845 [.text
3846         or %g1, %lo(ab) + 12, %g1
3847         or %g1, %lo(ab + 12), %g1],
3848       [if test x$gcc_cv_objdump != x \
3849        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
3850           | grep ' 82106000 82106000' > /dev/null 2>&1; then
3851          gcc_cv_as_sparc_offsetable_lo10=yes
3852        fi],
3853        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
3854                  [Define if your assembler supports offsetable %lo().])])
3855
3856     gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions],
3857       gcc_cv_as_sparc_fmaf,,
3858       [-xarch=v9d],
3859       [.text
3860        .register %g2, #scratch
3861        .register %g3, #scratch
3862        .align 4
3863        fmaddd %f0, %f2, %f4, %f6
3864        addxccc %g1, %g2, %g3
3865        fsrl32 %f2, %f4, %f8
3866        fnaddd %f10, %f12, %f14],,
3867       [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1,
3868                 [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])])
3869
3870     gcc_GAS_CHECK_FEATURE([SPARC4 instructions],
3871       gcc_cv_as_sparc_sparc4,,
3872       [-xarch=sparc4],
3873       [.text
3874        .register %g2, #scratch
3875        .register %g3, #scratch
3876        .align 4
3877        cxbe %g2, %g3, 1f
3878 1:     cwbneg %g2, %g3, 1f
3879 1:     sha1
3880        md5
3881        aes_kexpand0 %f4, %f6, %f8
3882        des_round %f38, %f40, %f42, %f44
3883        camellia_f %f54, %f56, %f58, %f60
3884        kasumi_fi_xor %f46, %f48, %f50, %f52],,
3885       [AC_DEFINE(HAVE_AS_SPARC4, 1,
3886                 [Define if your assembler supports SPARC4 instructions.])])
3887
3888     gcc_GAS_CHECK_FEATURE([LEON instructions],
3889       gcc_cv_as_sparc_leon,,
3890       [-Aleon],
3891       [.text
3892        .register %g2, #scratch
3893        .register %g3, #scratch
3894        .align 4
3895        smac %g2, %g3, %g1
3896        umac %g2, %g3, %g1
3897        casa [[%g2]] 0xb, %g3, %g1],,
3898       [AC_DEFINE(HAVE_AS_LEON, 1,
3899                 [Define if your assembler supports LEON instructions.])])
3900     ;;
3901
3902 changequote(,)dnl
3903   i[34567]86-*-* | x86_64-*-*)
3904 changequote([,])dnl
3905     case $target_os in
3906       cygwin*)
3907         # Full C++ conformance when using a shared libstdc++-v3 requires some
3908         # support from the Cygwin DLL, which in more recent versions exports
3909         # wrappers to aid in interposing and redirecting operators new, delete,
3910         # etc., as per n2800 #17.6.4.6 [replacement.functions].  Check if we
3911         # are configuring for a version of Cygwin that exports the wrappers.
3912         if test x$host = x$target && test x$host_cpu = xi686; then
3913           AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no])
3914         else
3915           # Can't check presence of libc functions during cross-compile, so
3916           # we just have to assume we're building for an up-to-date target.
3917           gcc_ac_cygwin_dll_wrappers=yes
3918         fi
3919         AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS,
3920           [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`],
3921           [Define if you want to generate code by default that assumes that the
3922            Cygwin DLL exports wrappers to support libstdc++ function replacement.])
3923     esac
3924     case $target_os in
3925       cygwin* | pe | mingw32* | interix*)
3926         # Recent binutils allows the three-operand form of ".comm" on PE.  This
3927         # definition is used unconditionally to initialise the default state of
3928         # the target option variable that governs usage of the feature.
3929         gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align,
3930          [2,19,52],,[.comm foo,1,32])
3931         AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM,
3932           [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`],
3933           [Define if your assembler supports specifying the alignment
3934            of objects allocated using the GAS .comm command.])
3935         # Used for DWARF 2 in PE
3936         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
3937           gcc_cv_as_ix86_pe_secrel32,
3938           [2,15,91],,
3939 [.text
3940 foo:    nop
3941 .data
3942         .secrel32 foo],
3943           [if test x$gcc_cv_ld != x \
3944            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
3945              gcc_cv_as_ix86_pe_secrel32=yes
3946            fi
3947            rm -f conftest],
3948           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
3949             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
3950         # Test if the assembler supports the extended form of the .section
3951         # directive that specifies section alignment.  LTO support uses this,
3952         # but normally only after installation, so we warn but don't fail the
3953         # configure if LTO is enabled but the assembler does not support it.
3954         gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align,
3955           [2,20,1],-fatal-warnings,[.section lto_test,"dr0"])
3956         if test x$gcc_cv_as_section_has_align != xyes; then
3957           case ",$enable_languages," in
3958             *,lto,*)
3959               AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.])
3960               ;;
3961           esac
3962         fi
3963         ;;
3964     esac
3965
3966     # Test if the assembler supports the section flag 'e' for specifying
3967     # an excluded section.
3968     gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e,
3969       [2,22,51], [--fatal-warnings],
3970 [.section foo1,"e"
3971 .byte 0,0,0,0])
3972     AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE,
3973       [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`],
3974       [Define if your assembler supports specifying the section flag e.])
3975
3976     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
3977        gcc_cv_as_ix86_filds,,,
3978        [filds (%ebp); fists (%ebp)],,
3979        [AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
3980          [Define if your assembler uses filds and fists mnemonics.])])
3981
3982     gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
3983        gcc_cv_as_ix86_fildq,,,
3984        [fildq (%ebp); fistpq (%ebp)],,
3985        [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
3986          [Define if your assembler uses fildq and fistq mnemonics.])])
3987
3988     gcc_GAS_CHECK_FEATURE([cmov syntax],
3989       gcc_cv_as_ix86_cmov_sun_syntax,,,
3990       [cmovl.l %edx, %eax],,
3991       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
3992         [Define if your assembler supports the Sun syntax for cmov.])])
3993
3994     gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
3995       gcc_cv_as_ix86_ffreep,,,
3996       [ffreep %st(1)],,
3997       [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
3998         [Define if your assembler supports the ffreep mnemonic.])])
3999
4000     gcc_GAS_CHECK_FEATURE([.quad directive],
4001       gcc_cv_as_ix86_quad,,,
4002       [.quad 0],,
4003       [AC_DEFINE(HAVE_AS_IX86_QUAD, 1,
4004         [Define if your assembler supports the .quad directive.])])
4005
4006     gcc_GAS_CHECK_FEATURE([sahf mnemonic],
4007       gcc_cv_as_ix86_sahf,,,
4008       [.code64
4009        sahf],,
4010       [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
4011         [Define if your assembler supports the sahf mnemonic in 64bit mode.])])
4012
4013     gcc_GAS_CHECK_FEATURE([interunit movq mnemonic],
4014       gcc_cv_as_ix86_interunit_movq,,,
4015       [.code64
4016        movq %mm0, %rax
4017        movq %rax, %xmm0])
4018     AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ,
4019       [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`],
4020       [Define if your assembler supports interunit movq mnemonic.])
4021
4022     gcc_GAS_CHECK_FEATURE([hle prefixes],
4023       gcc_cv_as_ix86_hle,,,
4024       [lock xacquire cmpxchg %esi, (%ecx)],,
4025       [AC_DEFINE(HAVE_AS_IX86_HLE, 1,
4026         [Define if your assembler supports HLE prefixes.])])
4027
4028     gcc_GAS_CHECK_FEATURE([swap suffix],
4029       gcc_cv_as_ix86_swap,,,
4030       [movl.s %esp, %ebp],,
4031       [AC_DEFINE(HAVE_AS_IX86_SWAP, 1,
4032         [Define if your assembler supports the swap suffix.])])
4033
4034     gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
4035       gcc_cv_as_ix86_diff_sect_delta,,,
4036       [.section .rodata
4037 .L1:
4038         .long .L2-.L1
4039         .long .L3-.L1
4040         .text
4041 .L3:    nop
4042 .L2:    nop],,
4043       [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
4044         [Define if your assembler supports the subtraction of symbols in different sections.])])
4045
4046     # These two are used unconditionally by i386.[ch]; it is to be defined
4047     # to 1 if the feature is present, 0 otherwise.
4048     as_ix86_gotoff_in_data_opt=
4049     if test x$gas = xyes; then
4050       as_ix86_gotoff_in_data_opt="--32"
4051     fi
4052     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
4053       gcc_cv_as_ix86_gotoff_in_data, [2,11,0],
4054       [$as_ix86_gotoff_in_data_opt],
4055 [       .text
4056 .L0:
4057         nop
4058         .data
4059         .long .L0@GOTOFF])
4060     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
4061       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
4062       [Define true if the assembler supports '.long foo@GOTOFF'.])
4063
4064     gcc_GAS_CHECK_FEATURE([rep and lock prefix],
4065         gcc_cv_as_ix86_rep_lock_prefix,,,
4066         [rep movsl
4067          rep ret
4068          rep nop
4069          rep bsf %ecx, %eax
4070          rep bsr %ecx, %eax
4071          lock addl %edi, (%eax,%esi)
4072          lock orl $0, (%esp)],,
4073         [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1,
4074           [Define if the assembler supports 'rep <insn>, lock <insn>'.])])
4075
4076     gcc_GAS_CHECK_FEATURE([ud2 mnemonic],
4077         gcc_cv_as_ix86_ud2,,,
4078         [ud2],,
4079       [AC_DEFINE(HAVE_AS_IX86_UD2, 1,
4080         [Define if your assembler supports the 'ud2' mnemonic.])])
4081
4082     gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc],
4083         gcc_cv_as_ix86_tlsgdplt,,,
4084         [call    tls_gd@tlsgdplt],
4085         [if test x$gcc_cv_ld != x \
4086          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4087            gcc_cv_as_ix86_tlsgdplt=yes
4088          fi
4089          rm -f conftest],
4090       [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1,
4091         [Define if your assembler and linker support @tlsgdplt.])])
4092
4093     conftest_s='
4094         .section .tdata,"aw'$tls_section_flag'",@progbits
4095 tls_ld:
4096         .section .text,"ax",@progbits
4097          call    tls_ld@tlsldmplt'
4098     gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc],
4099         gcc_cv_as_ix86_tlsldmplt,,,
4100         [$conftest_s],
4101         [if test x$gcc_cv_ld != x \
4102          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
4103            gcc_cv_as_ix86_tlsldmplt=yes
4104          fi
4105          rm -f conftest])
4106     AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT,
4107       [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`],
4108       [Define to 1 if your assembler and linker support @tlsldmplt.])
4109
4110     # Enforce 32-bit output with gas and gld.
4111     if test x$gas = xyes; then
4112       as_ix86_tls_ldm_opt="--32"
4113     fi
4114     if echo "$ld_ver" | grep GNU > /dev/null; then
4115       if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then
4116         ld_ix86_tls_ldm_opt="-melf_i386_sol2"
4117       else
4118         ld_ix86_tls_ldm_opt="-melf_i386"
4119       fi
4120     fi
4121     conftest_s='
4122         .section .text,"ax",@progbits
4123         .globl  _start
4124         .type   _start, @function
4125 _start:
4126         leal    value@tlsldm(%ebx), %eax
4127         call    ___tls_get_addr@plt
4128
4129         .section .tdata,"aw'$tls_section_flag'",@progbits
4130         .type   value, @object
4131 value:'
4132     gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc],
4133         gcc_cv_as_ix86_tlsldm,,
4134         [$as_ix86_tls_ldm_opt],
4135         [$conftest_s],
4136         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
4137             && $gcc_cv_ld $ld_ix86_tls_ldm_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then
4138            if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \
4139               || dis conftest 2>/dev/null | grep nop > /dev/null; then
4140              gcc_cv_as_ix86_tlsldm=yes
4141            fi
4142          fi
4143          rm -f conftest])
4144     AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM,
4145       [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
4146       [Define to 1 if your assembler and linker support @tlsldm.])
4147
4148     ;;
4149
4150   ia64*-*-*)
4151     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
4152         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
4153 [       .text
4154         addl r15 = @ltoffx(x#), gp
4155         ;;
4156         ld8.mov r16 = [[r15]], x#],,
4157     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
4158           [Define if your assembler supports ltoffx and ldxmov relocations.])])
4159
4160     ;;
4161
4162   powerpc*-*-*)
4163     case $target in
4164       *-*-aix*) conftest_s='    .machine "pwr5"
4165         .csect .text[[PR]]
4166         mfcr 3,128';;
4167       *-*-darwin*)
4168         gcc_GAS_CHECK_FEATURE([.machine directive support],
4169           gcc_cv_as_machine_directive,,,
4170           [     .machine ppc7400])
4171         if test x$gcc_cv_as_machine_directive != xyes; then
4172           echo "*** This target requires an assembler supporting \".machine\"" >&2
4173           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
4174           test x$build = x$target && exit 1
4175         fi
4176         conftest_s='    .text
4177         mfcr r3,128';;
4178       *) conftest_s='   .machine power4
4179         .text
4180         mfcr 3,128';;
4181     esac
4182
4183     gcc_GAS_CHECK_FEATURE([mfcr field support],
4184       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
4185       [$conftest_s],,
4186       [AC_DEFINE(HAVE_AS_MFCRF, 1,
4187           [Define if your assembler supports mfcr field.])])
4188
4189     case $target in
4190       *-*-aix*) conftest_s='    .machine "pwr5"
4191         .csect .text[[PR]]
4192         popcntb 3,3';;
4193       *) conftest_s='   .machine power5
4194         .text
4195         popcntb 3,3';;
4196     esac
4197
4198     gcc_GAS_CHECK_FEATURE([popcntb support],
4199       gcc_cv_as_powerpc_popcntb, [2,17,0],,
4200       [$conftest_s],,
4201       [AC_DEFINE(HAVE_AS_POPCNTB, 1,
4202           [Define if your assembler supports popcntb field.])])
4203
4204     case $target in
4205       *-*-aix*) conftest_s='    .machine "pwr5x"
4206         .csect .text[[PR]]
4207         frin 1,1';;
4208       *) conftest_s='   .machine power5
4209         .text
4210         frin 1,1';;
4211     esac
4212
4213     gcc_GAS_CHECK_FEATURE([fp round support],
4214       gcc_cv_as_powerpc_fprnd, [2,17,0],,
4215       [$conftest_s],,
4216       [AC_DEFINE(HAVE_AS_FPRND, 1,
4217           [Define if your assembler supports fprnd.])])
4218
4219     case $target in
4220       *-*-aix*) conftest_s='    .machine "pwr6"
4221         .csect .text[[PR]]
4222         mffgpr 1,3';;
4223       *) conftest_s='   .machine power6
4224         .text
4225         mffgpr 1,3';;
4226     esac
4227
4228     gcc_GAS_CHECK_FEATURE([move fp gpr support],
4229       gcc_cv_as_powerpc_mfpgpr, [2,19,2],,
4230       [$conftest_s],,
4231       [AC_DEFINE(HAVE_AS_MFPGPR, 1,
4232           [Define if your assembler supports mffgpr and mftgpr.])])
4233
4234     case $target in
4235       *-*-aix*) conftest_s='    .csect .text[[PR]]
4236 LCF..0:
4237         addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
4238       *-*-darwin*)
4239         conftest_s='    .text
4240 LCF0:
4241         addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
4242       *) conftest_s='   .text
4243 .LCF0:
4244         addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
4245     esac
4246
4247     gcc_GAS_CHECK_FEATURE([rel16 relocs],
4248       gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
4249       [$conftest_s],,
4250       [AC_DEFINE(HAVE_AS_REL16, 1,
4251           [Define if your assembler supports R_PPC_REL16 relocs.])])
4252
4253     case $target in
4254       *-*-aix*) conftest_s='    .machine "pwr6"
4255         .csect .text[[PR]]
4256         cmpb 3,4,5';;
4257       *) conftest_s='   .machine power6
4258         .text
4259         cmpb 3,4,5';;
4260     esac
4261
4262     gcc_GAS_CHECK_FEATURE([compare bytes support],
4263       gcc_cv_as_powerpc_cmpb, [2,19,2], -a32,
4264       [$conftest_s],,
4265       [AC_DEFINE(HAVE_AS_CMPB, 1,
4266           [Define if your assembler supports cmpb.])])
4267
4268     case $target in
4269       *-*-aix*) conftest_s='    .machine "pwr6"
4270         .csect .text[[PR]]
4271         dadd 1,2,3';;
4272       *) conftest_s='   .machine power6
4273         .text
4274         dadd 1,2,3';;
4275     esac
4276
4277     gcc_GAS_CHECK_FEATURE([decimal float support],
4278       gcc_cv_as_powerpc_dfp, [2,19,2], -a32,
4279       [$conftest_s],,
4280       [AC_DEFINE(HAVE_AS_DFP, 1,
4281           [Define if your assembler supports DFP instructions.])])
4282
4283     case $target in
4284       *-*-aix*) conftest_s='    .machine "pwr7"
4285         .csect .text[[PR]]
4286         lxvd2x 1,2,3';;
4287       *) conftest_s='   .machine power7
4288         .text
4289         lxvd2x 1,2,3';;
4290     esac
4291
4292     gcc_GAS_CHECK_FEATURE([vector-scalar support],
4293       gcc_cv_as_powerpc_vsx, [2,19,2], -a32,
4294       [$conftest_s],,
4295       [AC_DEFINE(HAVE_AS_VSX, 1,
4296           [Define if your assembler supports VSX instructions.])])
4297
4298     case $target in
4299       *-*-aix*) conftest_s='    .machine "pwr7"
4300         .csect .text[[PR]]
4301         popcntd 3,3';;
4302       *) conftest_s='   .machine power7
4303         .text
4304         popcntd 3,3';;
4305     esac
4306
4307     gcc_GAS_CHECK_FEATURE([popcntd support],
4308       gcc_cv_as_powerpc_popcntd, [2,19,2], -a32,
4309       [$conftest_s],,
4310       [AC_DEFINE(HAVE_AS_POPCNTD, 1,
4311           [Define if your assembler supports POPCNTD instructions.])])
4312
4313     case $target in
4314       *-*-aix*) conftest_s='    .machine "pwr8"
4315         .csect .text[[PR]]';;
4316       *) conftest_s='   .machine power8
4317         .text';;
4318     esac
4319
4320     gcc_GAS_CHECK_FEATURE([power8 support],
4321       gcc_cv_as_powerpc_power8, [2,19,2], -a32,
4322       [$conftest_s],,
4323       [AC_DEFINE(HAVE_AS_POWER8, 1,
4324           [Define if your assembler supports POWER8 instructions.])])
4325
4326     case $target in
4327       *-*-aix*) conftest_s='    .machine "pwr9"
4328         .csect .text[[PR]]';;
4329       *) conftest_s='   .machine power9
4330         .text';;
4331     esac
4332
4333     gcc_GAS_CHECK_FEATURE([power9 support],
4334       gcc_cv_as_powerpc_power9, [2,19,2], -a32,
4335       [$conftest_s],,
4336       [AC_DEFINE(HAVE_AS_POWER9, 1,
4337           [Define if your assembler supports POWER9 instructions.])])
4338
4339     case $target in
4340       *-*-aix*) conftest_s='    .csect .text[[PR]]
4341         lwsync';;
4342       *) conftest_s='   .text
4343         lwsync';;
4344     esac
4345
4346     gcc_GAS_CHECK_FEATURE([lwsync support],
4347       gcc_cv_as_powerpc_lwsync, [2,19,2], -a32,
4348       [$conftest_s],,
4349       [AC_DEFINE(HAVE_AS_LWSYNC, 1,
4350           [Define if your assembler supports LWSYNC instructions.])])
4351
4352     case $target in
4353       *-*-aix*) conftest_s='    .machine "476"
4354         .csect .text[[PR]]
4355         dci 0';;
4356       *) conftest_s='   .machine "476"
4357         .text
4358         dci 0';;
4359     esac
4360
4361     gcc_GAS_CHECK_FEATURE([data cache invalidate support],
4362       gcc_cv_as_powerpc_dci, [9,99,0], -a32,
4363       [$conftest_s],,
4364       [AC_DEFINE(HAVE_AS_DCI, 1,
4365           [Define if your assembler supports the DCI/ICI instructions.])])
4366
4367     gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4368       gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
4369       [.gnu_attribute 4,1],,
4370       [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4371           [Define if your assembler supports .gnu_attribute.])])
4372
4373     gcc_GAS_CHECK_FEATURE([tls marker support],
4374       gcc_cv_as_powerpc_tls_markers, [2,20,0],,
4375       [ bl __tls_get_addr(x@tlsgd)],,
4376       [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1,
4377           [Define if your assembler supports arg info for __tls_get_addr.])])
4378
4379     gcc_GAS_CHECK_FEATURE([prologue entry point marker support],
4380       gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings,
4381       [ .reloc .,R_PPC64_ENTRY; nop],,
4382       [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1,
4383           [Define if your assembler supports the R_PPC64_ENTRY relocation.])])
4384
4385     case $target in
4386       *-*-aix*)
4387         gcc_GAS_CHECK_FEATURE([.ref support],
4388           gcc_cv_as_aix_ref, [2,21,0],,
4389           [     .csect stuff[[rw]]
4390              stuff:
4391                 .long 1
4392                 .extern sym
4393                 .ref sym
4394           ],,
4395           [AC_DEFINE(HAVE_AS_REF, 1,
4396             [Define if your assembler supports .ref])])
4397         ;;
4398     esac
4399
4400     case $target in
4401       *-*-aix*)
4402         gcc_GAS_CHECK_FEATURE([dwarf location lists section support],
4403           gcc_cv_as_aix_dwloc, [2,21,0],,
4404           [     .dwsect 0xB0000
4405           ],,
4406           [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1,
4407             [Define if your assembler supports .dwsect 0xB0000])])
4408         ;;
4409     esac
4410     ;;
4411
4412   mips*-*-*)
4413     gcc_GAS_CHECK_FEATURE([explicit relocation support],
4414       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
4415 [       lw $4,%gp_rel(foo)($4)],,
4416       [if test x$target_cpu_default = x
4417        then target_cpu_default=MASK_EXPLICIT_RELOCS
4418        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
4419        fi])
4420
4421     gcc_GAS_CHECK_FEATURE([-mno-shared support],
4422       gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
4423       [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
4424                  [Define if the assembler understands -mno-shared.])])
4425
4426     gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4427       gcc_cv_as_mips_gnu_attribute, [2,18,0],,
4428       [.gnu_attribute 4,1],,
4429       [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4430           [Define if your assembler supports .gnu_attribute.])])
4431
4432     gcc_GAS_CHECK_FEATURE([.module support],
4433       gcc_cv_as_mips_dot_module,,[-32],
4434       [.module mips2
4435        .module fp=xx],,
4436       [AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
4437           [Define if your assembler supports .module.])])
4438     if test x$gcc_cv_as_mips_dot_module = xno \
4439        && test x$with_fp_32 != x; then
4440       AC_MSG_ERROR(
4441         [Requesting --with-fp-32= requires assembler support for .module.])
4442     fi
4443
4444     gcc_GAS_CHECK_FEATURE([.micromips support],
4445       gcc_cv_as_micromips_support,,[--fatal-warnings],
4446       [.set micromips],,
4447       [AC_DEFINE(HAVE_GAS_MICROMIPS, 1,
4448           [Define if your assembler supports the .set micromips directive])])
4449
4450     gcc_GAS_CHECK_FEATURE([.dtprelword support],
4451       gcc_cv_as_mips_dtprelword, [2,18,0],,
4452       [.section .tdata,"awT",@progbits
4453 x:
4454         .word 2
4455         .text
4456         .dtprelword x+0x8000],,
4457       [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
4458           [Define if your assembler supports .dtprelword.])])
4459
4460     gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support],
4461       gcc_cv_as_mips_dspr1_mult,,,
4462 [       .set    mips32r2
4463         .set    nodspr2
4464         .set    dsp
4465         madd    $ac3,$4,$5
4466         maddu   $ac3,$4,$5
4467         msub    $ac3,$4,$5
4468         msubu   $ac3,$4,$5
4469         mult    $ac3,$4,$5
4470         multu   $ac3,$4,$5],,
4471       [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1,
4472           [Define if your assembler supports DSPR1 mult.])])
4473
4474     AC_MSG_CHECKING(assembler and linker for explicit JALR relocation)
4475     gcc_cv_as_ld_jalr_reloc=no
4476     if test $gcc_cv_as_mips_explicit_relocs = yes; then
4477       if test $in_tree_ld = yes ; then
4478         if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \
4479            && test $in_tree_ld_is_elf = yes; then
4480           gcc_cv_as_ld_jalr_reloc=yes
4481         fi
4482       elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then
4483         echo '  .ent x' > conftest.s
4484         echo 'x:        lw $2,%got_disp(y)($3)' >> conftest.s
4485         echo '  lw $25,%call16(y)($28)' >> conftest.s
4486         echo '  .reloc  1f,R_MIPS_JALR,y' >> conftest.s
4487         echo '1:        jalr $25' >> conftest.s
4488         echo '  .reloc  1f,R_MIPS_JALR,x' >> conftest.s
4489         echo '1:        jalr $25' >> conftest.s
4490         echo '  .end x' >> conftest.s
4491         if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \
4492            && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then
4493           if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \
4494              && $gcc_cv_objdump -d conftest.so | grep "bal.*<x>" >/dev/null 2>&1; then
4495             gcc_cv_as_ld_jalr_reloc=yes
4496           fi
4497         fi
4498         rm -f conftest.*
4499       fi
4500     fi
4501     if test $gcc_cv_as_ld_jalr_reloc = yes; then
4502       if test x$target_cpu_default = x; then
4503         target_cpu_default=MASK_RELAX_PIC_CALLS
4504       else
4505         target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS"
4506       fi
4507     fi
4508     AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc)
4509
4510     AC_CACHE_CHECK([linker for .eh_frame personality relaxation],
4511       [gcc_cv_ld_mips_personality_relaxation],
4512       [gcc_cv_ld_mips_personality_relaxation=no
4513        if test $in_tree_ld = yes ; then
4514          if test "$gcc_cv_gld_major_version" -eq 2 \
4515                  -a "$gcc_cv_gld_minor_version" -ge 21 \
4516                  -o "$gcc_cv_gld_major_version" -gt 2; then
4517            gcc_cv_ld_mips_personality_relaxation=yes
4518          fi
4519        elif test x$gcc_cv_as != x \
4520                  -a x$gcc_cv_ld != x \
4521                  -a x$gcc_cv_readelf != x ; then
4522          cat > conftest.s <<EOF
4523         .cfi_startproc
4524         .cfi_personality 0x80,indirect_ptr
4525         .ent test
4526 test:
4527         nop
4528         .end test
4529         .cfi_endproc
4530
4531         .section .data,"aw",@progbits
4532 indirect_ptr:
4533         .dc.a personality
4534 EOF
4535          if $gcc_cv_as -KPIC -o conftest.o conftest.s > /dev/null 2>&1 \
4536             && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then
4537            if $gcc_cv_readelf -d conftest 2>&1 \
4538               | grep TEXTREL > /dev/null 2>&1; then
4539              :
4540            elif $gcc_cv_readelf --relocs conftest 2>&1 \
4541                 | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then
4542              :
4543            else
4544              gcc_cv_ld_mips_personality_relaxation=yes
4545            fi
4546          fi
4547        fi
4548        rm -f conftest.s conftest.o conftest])
4549     if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then
4550             AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1,
4551       [Define if your linker can relax absolute .eh_frame personality
4552 pointers into PC-relative form.])
4553     fi
4554
4555     gcc_GAS_CHECK_FEATURE([-mnan= support],
4556       gcc_cv_as_mips_nan,,
4557       [-mnan=2008],,,
4558       [AC_DEFINE(HAVE_AS_NAN, 1,
4559                  [Define if the assembler understands -mnan=.])])
4560     if test x$gcc_cv_as_mips_nan = xno \
4561        && test x$with_nan != x; then
4562       AC_MSG_ERROR(
4563         [Requesting --with-nan= requires assembler support for -mnan=])
4564     fi
4565     ;;
4566     s390*-*-*)
4567     gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
4568       gcc_cv_as_s390_gnu_attribute, [2,18,0],,
4569       [.gnu_attribute 8,1],,
4570       [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
4571           [Define if your assembler supports .gnu_attribute.])])
4572     gcc_GAS_CHECK_FEATURE([.machine and .machinemode support],
4573       gcc_cv_as_s390_machine_machinemode, [2,24,0],,
4574       [ .machinemode push
4575         .machinemode pop
4576         .machine push
4577         .machine pop],,
4578       [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1,
4579           [Define if your assembler supports .machine and .machinemode.])])
4580     gcc_GAS_CHECK_FEATURE([architecture modifiers support],
4581       gcc_cv_as_s390_architecture_modifiers, [2,26,0],,
4582       [ .machine z13+vx ],,
4583       [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1,
4584           [Define if your assembler supports architecture modifiers.])])
4585     ;;
4586 esac
4587
4588 # Mips and HP-UX need the GNU assembler.
4589 # Linux on IA64 might be able to use the Intel assembler.
4590
4591 case "$target" in
4592   mips*-*-* | *-*-hpux* )
4593     if test x$gas_flag = xyes \
4594        || test x"$host" != x"$build" \
4595        || test ! -x "$gcc_cv_as" \
4596        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
4597       :
4598     else
4599       echo "*** This configuration requires the GNU assembler" >&2
4600       exit 1
4601     fi
4602     ;;
4603 esac
4604
4605 # ??? Not all targets support dwarf2 debug_line, even within a version
4606 # of gas.  Moreover, we need to emit a valid instruction to trigger any
4607 # info to the output file.  So, as supported targets are added to gas 2.11,
4608 # add some instruction here to (also) show we expect this might work.
4609 # ??? Once 2.11 is released, probably need to add first known working
4610 # version to the per-target configury.
4611 case "$cpu_type" in
4612   aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
4613   | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
4614   | visium | xstormy16 | xtensa)
4615     insn="nop"
4616     ;;
4617   ia64 | s390)
4618     insn="nop 0"
4619     ;;
4620   mmix)
4621     insn="swym 0"
4622     ;;
4623 esac
4624 if test x"$insn" != x; then
4625  conftest_s="\
4626         .file 1 \"conftest.s\"
4627         .loc 1 3 0
4628         $insn"
4629  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
4630   gcc_cv_as_dwarf2_debug_line,
4631   [elf,2,11,0],, [$conftest_s],
4632   [if test x$gcc_cv_objdump != x \
4633    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
4634       | grep debug_line > /dev/null 2>&1; then
4635      gcc_cv_as_dwarf2_debug_line=yes
4636    fi])
4637
4638 # The .debug_line file table must be in the exact order that
4639 # we specified the files, since these indices are also used
4640 # by DW_AT_decl_file.  Approximate this test by testing if
4641 # the assembler bitches if the same index is assigned twice.
4642  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
4643   gcc_cv_as_dwarf2_file_buggy,,,
4644 [       .file 1 "foo.s"
4645         .file 1 "bar.s"])
4646
4647  if test $gcc_cv_as_dwarf2_debug_line = yes \
4648  && test $gcc_cv_as_dwarf2_file_buggy = no; then
4649         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
4650   [Define if your assembler supports dwarf2 .file/.loc directives,
4651    and preserves file table indices exactly as given.])
4652  fi
4653
4654  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
4655   gcc_cv_as_gdwarf2_flag,
4656   [elf,2,11,0], [--gdwarf2], [$insn],,
4657   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
4658 [Define if your assembler supports the --gdwarf2 option.])])
4659
4660  gcc_GAS_CHECK_FEATURE([--gstabs option],
4661   gcc_cv_as_gstabs_flag,
4662   [elf,2,11,0], [--gstabs], [$insn],,
4663   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
4664 [Define if your assembler supports the --gstabs option.])])
4665
4666  gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
4667   gcc_cv_as_debug_prefix_map_flag,
4668   [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
4669   [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
4670 [Define if your assembler supports the --debug-prefix-map option.])])
4671 fi
4672
4673 gcc_GAS_CHECK_FEATURE([compressed debug sections],
4674   gcc_cv_as_compress_debug,,[--compress-debug-sections],,
4675   [# gas compiled without zlib cannot compress debug sections and warns
4676    # about it, but still exits successfully.  So check for this, too.
4677    if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null
4678    then
4679      gcc_cv_as_compress_debug=0
4680    elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1
4681    then
4682      gcc_cv_as_compress_debug=1
4683      gcc_cv_as_compress_debug_option="--compress-debug-sections"
4684      gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections"
4685    else
4686      gcc_cv_as_compress_debug=0
4687    # FIXME: Future gas versions will support ELF gABI style via
4688    # --compress-debug-sections[=type].
4689    fi])
4690 AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug,
4691 [Define to the level of your assembler's compressed debug section support.])
4692 AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option",
4693 [Define to the assembler option to enable compressed debug sections.])
4694 AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option",
4695 [Define to the assembler option to disable compressed debug sections.])
4696
4697 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
4698  ,,
4699 [.lcomm bar,4,16],,
4700 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
4701   [Define if your assembler supports .lcomm with an alignment field.])])
4702
4703 if test x$with_sysroot = x && test x$host = x$target \
4704    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
4705    && test "$prefix" != "NONE"; then
4706   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
4707 [Define to PREFIX/include if cpp should also search that directory.])
4708 fi
4709
4710 # Determine the version of glibc, if any, used on the target.
4711 AC_MSG_CHECKING([for target glibc version])
4712 AC_ARG_WITH([glibc-version],
4713   [AS_HELP_STRING([--with-glibc-version=M.N],
4714     [assume GCC used with glibc version M.N or later])], [
4715 if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then
4716   glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'`
4717   glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'`
4718 else
4719   AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
4720 fi], [
4721 glibc_version_major=0
4722 glibc_version_minor=0
4723 [if test -f $target_header_dir/features.h \
4724   && glibc_version_major_define=`$EGREP '^[     ]*#[    ]*define[       ]+__GLIBC__[    ]+[0-9]' $target_header_dir/features.h` \
4725   && glibc_version_minor_define=`$EGREP '^[     ]*#[    ]*define[       ]+__GLIBC_MINOR__[      ]+[0-9]' $target_header_dir/features.h`; then
4726   glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[      ]*//'`
4727   glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[        ]*//'`
4728 fi]])
4729 AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
4730 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major],
4731 [GNU C Library major version number used on the target, or 0.])
4732 AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor],
4733 [GNU C Library minor version number used on the target, or 0.])
4734
4735 AC_ARG_ENABLE(gnu-unique-object,
4736  [AS_HELP_STRING([--enable-gnu-unique-object],
4737    [enable the use of the @gnu_unique_object ELF extension on glibc systems])],
4738  [case $enable_gnu_unique_object in
4739     yes | no) ;;
4740     *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object.
4741 Valid choices are 'yes' and 'no'.]) ;;
4742   esac],
4743  [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
4744    [elf,2,19,52],,
4745    [.type foo, '$target_type_format_char'gnu_unique_object],,
4746 # We need to unquote above to to use the definition from config.gcc.
4747 # Also check for ld.so support, i.e. glibc 2.11 or higher.
4748    [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )]
4749    )])
4750 if test x$enable_gnu_unique_object = xyes; then
4751   AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
4752    [Define if your assembler supports @gnu_unique_object.])
4753 fi
4754
4755 AC_CACHE_CHECK([assembler for tolerance to line number 0],
4756  [gcc_cv_as_line_zero],
4757  [gcc_cv_as_line_zero=no
4758   if test $in_tree_gas = yes; then
4759     gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
4760   elif test "x$gcc_cv_as" != x; then
4761     { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
4762     if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
4763        test "x`cat conftest.out`" = x
4764     then
4765       gcc_cv_as_line_zero=yes
4766     else
4767       echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
4768       cat conftest.s >&AS_MESSAGE_LOG_FD
4769       echo "configure: error output was" >&AS_MESSAGE_LOG_FD
4770       cat conftest.out >&AS_MESSAGE_LOG_FD
4771     fi
4772     rm -f conftest.o conftest.s conftest.out
4773   fi])
4774 if test "x$gcc_cv_as_line_zero" = xyes; then
4775   AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
4776 [Define if the assembler won't complain about a line such as # 0 "" 2.])
4777 fi
4778
4779 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
4780 gcc_cv_ld_eh_frame_hdr=no
4781 if test $in_tree_ld = yes ; then
4782   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
4783      && test $in_tree_ld_is_elf = yes; then
4784     gcc_cv_ld_eh_frame_hdr=yes
4785   fi
4786 elif test x$gcc_cv_ld != x; then
4787   if echo "$ld_ver" | grep GNU > /dev/null; then
4788     # Check if linker supports --eh-frame-hdr option
4789     if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
4790       gcc_cv_ld_eh_frame_hdr=yes
4791     fi
4792   else
4793     case "$target" in
4794       *-*-solaris2*)
4795         # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251.
4796         if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then
4797           gcc_cv_ld_eh_frame_hdr=yes
4798         fi
4799         ;;
4800     esac
4801   fi
4802 fi
4803 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
4804 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
4805         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
4806 [Define if your linker supports .eh_frame_hdr.])
4807 fi
4808 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
4809
4810 AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
4811 gcc_cv_ld_eh_frame_ciev3=no
4812 if test $in_tree_ld = yes ; then
4813   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
4814      && test $in_tree_ld_is_elf = yes; then
4815     gcc_cv_ld_eh_frame_ciev3=yes
4816   fi
4817 elif test x$gcc_cv_ld != x; then
4818   if echo "$ld_ver" | grep GNU > /dev/null; then
4819     gcc_cv_ld_eh_frame_ciev3=yes
4820     if test 0"$ld_date" -lt 20040513; then
4821       if test -n "$ld_date"; then
4822         # If there was date string, but was earlier than 2004-05-13, fail
4823         gcc_cv_ld_eh_frame_ciev3=no
4824       elif test "$ld_vers_major" -lt 2; then
4825         gcc_cv_ld_eh_frame_ciev3=no
4826       elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
4827         gcc_cv_ld_eh_frame_ciev3=no
4828       fi
4829     fi
4830   else
4831     case "$target" in
4832       *-*-solaris2*)
4833         # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
4834         if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
4835           gcc_cv_ld_eh_frame_ciev3=yes
4836         fi
4837         ;;
4838     esac
4839   fi
4840 fi
4841 AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
4842   [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
4843   [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
4844 AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
4845
4846 AC_MSG_CHECKING(linker position independent executable support)
4847 gcc_cv_ld_pie=no
4848 if test $in_tree_ld = yes ; then
4849   case "$target" in
4850     # Full PIE support on Solaris was only introduced in gld 2.26.
4851     *-*-solaris2*)  gcc_gld_pie_min_version=26 ;;
4852     *)              gcc_gld_pie_min_version=15 ;;
4853   esac
4854   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \
4855      && test $in_tree_ld_is_elf = yes; then
4856     gcc_cv_ld_pie=yes
4857   fi
4858 elif test x$gcc_cv_ld != x; then
4859   # Check if linker supports -pie option
4860   if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
4861     gcc_cv_ld_pie=yes
4862     case "$target" in
4863       *-*-solaris2*)
4864         if echo "$ld_ver" | grep GNU > /dev/null \
4865           && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then
4866           gcc_cv_ld_pie=no
4867         fi
4868         ;;
4869     esac
4870   else
4871     case "$target" in
4872       *-*-solaris2.1[[1-9]]*)
4873         # Solaris 11.x and Solaris 12 added PIE support.
4874         if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then
4875           gcc_cv_ld_pie=yes
4876         fi
4877         ;;
4878     esac
4879   fi
4880 fi
4881 if test x"$gcc_cv_ld_pie" = xyes; then
4882         AC_DEFINE(HAVE_LD_PIE, 1,
4883 [Define if your linker supports PIE option.])
4884 fi
4885 AC_MSG_RESULT($gcc_cv_ld_pie)
4886
4887 AC_MSG_CHECKING(linker PIE support with copy reloc)
4888 gcc_cv_ld_pie_copyreloc=no
4889 if test $gcc_cv_ld_pie = yes ; then
4890   if test $in_tree_ld = yes ; then
4891     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
4892       gcc_cv_ld_pie_copyreloc=yes
4893     fi
4894   elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
4895     # Check if linker supports -pie option with copy reloc
4896     case "$target" in
4897     i?86-*-linux* | x86_64-*-linux*)
4898       cat > conftest1.s <<EOF
4899         .globl  a_glob
4900         .data
4901         .type   a_glob, @object
4902         .size   a_glob, 4
4903 a_glob:
4904         .long   2
4905 EOF
4906       cat > conftest2.s <<EOF
4907         .text
4908         .globl  main
4909         .type   main, @function
4910 main:
4911         movl    %eax, a_glob(%rip)
4912         .size   main, .-main
4913         .globl  ptr
4914         .section        .data.rel,"aw",@progbits
4915         .type   ptr, @object
4916 ptr:
4917         .quad   a_glob
4918 EOF
4919       if $gcc_cv_as --64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
4920          && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \
4921          && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
4922          && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then
4923         gcc_cv_ld_pie_copyreloc=yes
4924       fi
4925       rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s
4926       ;;
4927     esac
4928   fi
4929 fi
4930 AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC,
4931   [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`],
4932   [Define 0/1 if your linker supports -pie option with copy reloc.])
4933 AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc)
4934
4935 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
4936 gcc_cv_ld_eh_gc_sections=no
4937 if test $in_tree_ld = yes ; then
4938   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
4939      && test $in_tree_ld_is_elf = yes; then
4940     gcc_cv_ld_eh_gc_sections=yes
4941   fi
4942 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
4943   cat > conftest.s <<EOF
4944         .section        .text
4945 .globl _start
4946         .type _start, @function
4947 _start:
4948         .long foo
4949         .size _start, .-_start
4950         .section        .text.foo,"ax",@progbits
4951         .type foo, @function
4952 foo:
4953         .long 0
4954         .size foo, .-foo
4955         .section        .gcc_except_table.foo,"a",@progbits
4956 .L0:
4957         .long 0
4958         .section        .eh_frame,"a",@progbits
4959         .long .L0
4960 EOF
4961   if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4962     if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4963          | grep "gc-sections option ignored" > /dev/null; then
4964       gcc_cv_ld_eh_gc_sections=no
4965     elif $gcc_cv_objdump -h conftest 2> /dev/null \
4966          | grep gcc_except_table > /dev/null; then
4967       gcc_cv_ld_eh_gc_sections=yes
4968       # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
4969       if test x$gcc_cv_as_comdat_group != xyes; then
4970         gcc_cv_ld_eh_gc_sections=no
4971         cat > conftest.s <<EOF
4972         .section        .text
4973 .globl _start
4974         .type _start, @function
4975 _start:
4976         .long foo
4977         .size _start, .-_start
4978         .section        .gnu.linkonce.t.foo,"ax",@progbits
4979         .type foo, @function
4980 foo:
4981         .long 0
4982         .size foo, .-foo
4983         .section        .gcc_except_table.foo,"a",@progbits
4984 .L0:
4985         .long 0
4986         .section        .eh_frame,"a",@progbits
4987         .long .L0
4988 EOF
4989         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
4990           if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
4991                | grep "gc-sections option ignored" > /dev/null; then
4992             gcc_cv_ld_eh_gc_sections=no
4993           elif $gcc_cv_objdump -h conftest 2> /dev/null \
4994                | grep gcc_except_table > /dev/null; then
4995             gcc_cv_ld_eh_gc_sections=yes
4996           fi
4997         fi
4998       fi
4999     fi
5000   fi
5001   rm -f conftest.s conftest.o conftest
5002 fi
5003 case "$target" in
5004   hppa*-*-linux*)
5005     # ??? This apparently exposes a binutils bug with PC-relative relocations.
5006     gcc_cv_ld_eh_gc_sections=no
5007     ;;
5008 esac
5009 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
5010         AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
5011   [Define if your linker supports garbage collection of
5012    sections in presence of EH frames.])
5013 fi
5014 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
5015
5016 AC_MSG_CHECKING(linker EH garbage collection of sections bug)
5017 gcc_cv_ld_eh_gc_sections_bug=no
5018 if test $in_tree_ld = yes ; then
5019   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \
5020      && test $in_tree_ld_is_elf = yes; then
5021     gcc_cv_ld_eh_gc_sections_bug=yes
5022   fi
5023 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then
5024   gcc_cv_ld_eh_gc_sections_bug=yes
5025   cat > conftest.s <<EOF
5026         .section        .text
5027 .globl _start
5028         .type _start, @function
5029 _start:
5030         .long foo
5031         .size _start, .-_start
5032         .section        .text.startup.foo,"ax",@progbits
5033         .type foo, @function
5034 foo:
5035         .long 0
5036         .size foo, .-foo
5037         .section        .gcc_except_table.foo,"a",@progbits
5038 .L0:
5039         .long 0
5040         .section        .eh_frame,"a",@progbits
5041         .long .L0
5042 EOF
5043   if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
5044     if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
5045          | grep "gc-sections option ignored" > /dev/null; then
5046       :
5047     elif $gcc_cv_objdump -h conftest 2> /dev/null \
5048          | grep gcc_except_table > /dev/null; then
5049       gcc_cv_ld_eh_gc_sections_bug=no
5050     fi
5051   fi
5052   rm -f conftest.s conftest.o conftest
5053 fi
5054 if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then
5055         AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1,
5056   [Define if your linker has buggy garbage collection of
5057    sections support when .text.startup.foo like sections are used.])
5058 fi
5059 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug)
5060
5061 AC_MSG_CHECKING(linker for compressed debug sections)
5062 # gold/gld support compressed debug sections since binutils 2.19/2.21
5063 if test $in_tree_ld = yes ; then
5064   gcc_cv_ld_compress_debug=0
5065   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \
5066      && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then
5067     gcc_cv_ld_compress_debug=2
5068     gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5069   elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \
5070      && test $in_tree_ld_is_elf = yes; then
5071     gcc_cv_ld_compress_debug=1
5072   fi
5073 elif echo "$ld_ver" | grep GNU > /dev/null; then
5074   gcc_cv_ld_compress_debug=1
5075   if test 0"$ld_date" -lt 20050308; then
5076     if test -n "$ld_date"; then
5077       # If there was date string, but was earlier than 2005-03-08, fail
5078       gcc_cv_ld_compress_debug=0
5079     elif test "$ld_vers_major" -lt 2; then
5080       gcc_cv_ld_compress_debug=0
5081     elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then
5082       gcc_cv_ld_compress_debug=0
5083     fi
5084   fi
5085   if test $ld_is_gold = yes; then
5086     gcc_cv_ld_compress_debug=2
5087     gcc_cv_ld_compress_debug_option="--compress-debug-sections"
5088   fi
5089 else
5090 changequote(,)dnl
5091   case "${target}" in
5092     *-*-solaris2*)
5093       # Introduced in Solaris 11.2.
5094       if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then
5095         gcc_cv_ld_compress_debug=3
5096         gcc_cv_ld_compress_debug_option="-z compress-sections"
5097       else
5098         gcc_cv_ld_compress_debug=0
5099       fi
5100       ;;
5101     *)
5102       # Assume linkers other than GNU ld don't support compessed debug
5103       # sections.
5104       gcc_cv_ld_compress_debug=0
5105       ;;
5106   esac
5107 changequote([,])dnl
5108 fi
5109 AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug,
5110 [Define to the level of your linker's compressed debug section support.])
5111 AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option",
5112 [Define to the linker option to enable compressed debug sections.])
5113 AC_MSG_RESULT($gcc_cv_ld_compress_debug)
5114
5115 # --------
5116 # UNSORTED
5117 # --------
5118
5119 AC_CACHE_CHECK(linker --as-needed support,
5120 gcc_cv_ld_as_needed,
5121 [gcc_cv_ld_as_needed=no
5122 gcc_cv_ld_as_needed_option='--as-needed'
5123 gcc_cv_ld_no_as_needed_option='--no-as-needed'
5124 if test $in_tree_ld = yes ; then
5125   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
5126      && test $in_tree_ld_is_elf = yes; then
5127     gcc_cv_ld_as_needed=yes
5128   fi
5129 elif test x$gcc_cv_ld != x; then
5130         # Check if linker supports --as-needed and --no-as-needed options
5131         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
5132                 gcc_cv_ld_as_needed=yes
5133         else
5134           case "$target" in
5135             # Solaris 2 ld always supports -z ignore/-z record.
5136             *-*-solaris2*)
5137               gcc_cv_ld_as_needed=yes
5138               gcc_cv_ld_as_needed_option="-z ignore"
5139               gcc_cv_ld_no_as_needed_option="-z record"
5140               ;;
5141           esac
5142         fi
5143 fi
5144 # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses
5145 # dl_iterate_phdr, i.e. since Solaris 11.
5146 case "$target" in
5147   *-*-solaris2.1[[1-9]]*)
5148     case "$target" in
5149     i?86-*-* | x86_64-*-*)
5150       if echo "$ld_ver" | grep GNU > /dev/null; then
5151         # Doesn't work with gld on Solaris/x86 due to PR ld/12320.
5152         gcc_cv_ld_as_needed=no
5153       fi
5154       ;;
5155     esac
5156     ;;
5157   *-*-solaris2*)
5158     gcc_cv_ld_as_needed=no
5159     ;;
5160 esac
5161 ])
5162 if test x"$gcc_cv_ld_as_needed" = xyes; then
5163         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
5164 [Define if your linker supports --as-needed/--no-as-needed or equivalent options.])
5165         AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option",
5166 [Define to the linker option to ignore unused dependencies.])
5167         AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option",
5168 [Define to the linker option to keep unused dependencies.])
5169 fi
5170
5171 AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
5172 saved_LDFLAGS="$LDFLAGS"
5173 for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
5174   LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
5175   AC_LINK_IFELSE([int main(void) {return 0;}],
5176     [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
5177 done
5178 LDFLAGS="$saved_LDFLAGS"
5179 if test "x$gcc_cv_ld_clearcap" = xyes; then
5180   AC_DEFINE([HAVE_LD_CLEARCAP], 1,
5181 [Define if the linker supports clearing hardware capabilities via mapfile.])
5182   AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
5183 fi
5184 AC_MSG_RESULT($gcc_cv_ld_clearcap)
5185
5186 case "$target:$tm_file" in
5187   powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
5188   case "$target" in
5189      *le-*-linux*)
5190      emul_name="-melf64lppc"
5191       ;;
5192      *-*-linux*)
5193      emul_name="-melf64ppc"
5194       ;;
5195      *-*-freebsd*)
5196      emul_name="-melf64ppc_fbsd"
5197       ;;
5198   esac
5199     AC_CACHE_CHECK(linker support for omitting dot symbols,
5200     gcc_cv_ld_no_dot_syms,
5201     [gcc_cv_ld_no_dot_syms=no
5202     if test x"$ld_is_gold" = xyes; then
5203       gcc_cv_ld_no_dot_syms=yes
5204     elif test $in_tree_ld = yes ; then
5205       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
5206         gcc_cv_ld_no_dot_syms=yes
5207       fi
5208     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5209       cat > conftest1.s <<EOF
5210         .text
5211         bl .foo
5212 EOF
5213       cat > conftest2.s <<EOF
5214         .section ".opd","aw"
5215         .align 3
5216         .globl foo
5217         .type foo,@function
5218 foo:
5219         .quad .LEfoo,.TOC.@tocbase,0
5220         .text
5221 .LEfoo:
5222         blr
5223         .size foo,.-.LEfoo
5224 EOF
5225       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
5226          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
5227          && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
5228         gcc_cv_ld_no_dot_syms=yes
5229       fi
5230       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
5231     fi
5232     ])
5233     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
5234       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
5235     [Define if your PowerPC64 linker only needs function descriptor syms.])
5236     fi
5237
5238     AC_CACHE_CHECK(linker large toc support,
5239     gcc_cv_ld_large_toc,
5240     [gcc_cv_ld_large_toc=no
5241     if test x"$ld_is_gold" = xyes; then
5242       gcc_cv_ld_large_toc=yes
5243     elif test $in_tree_ld = yes ; then
5244       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then
5245         gcc_cv_ld_large_toc=yes
5246       fi
5247     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
5248       cat > conftest.s <<EOF
5249         .section ".tbss","awT",@nobits
5250         .align 3
5251 ie0:    .space 8
5252         .global _start
5253         .text
5254 _start:
5255         addis 9,13,ie0@got@tprel@ha
5256         ld 9,ie0@got@tprel@l(9)
5257 EOF
5258       if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5259          && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then
5260         gcc_cv_ld_large_toc=yes
5261       fi
5262       rm -f conftest conftest.o conftest.s
5263     fi
5264     ])
5265     if test x"$gcc_cv_ld_large_toc" = xyes; then
5266       AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5267     [Define if your PowerPC64 linker supports a large TOC.])
5268     fi
5269
5270     AC_CACHE_CHECK(linker toc pointer alignment,
5271     gcc_cv_ld_toc_align,
5272     [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
5273       cat > conftest.s <<EOF
5274         .global _start
5275         .text
5276 _start:
5277         addis 9,2,x@got@ha
5278         .section .data.rel.ro,"aw",@progbits
5279         .p2align 16
5280         .space 32768
5281 x:      .quad .TOC.
5282 EOF
5283       if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
5284          && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then
5285         gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'`
5286       fi
5287       rm -f conftest conftest.o conftest.s
5288     fi
5289     ])
5290     if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then
5291       AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align,
5292     [Define to .TOC. alignment forced by your linker.])
5293     fi
5294     ;;
5295 esac
5296
5297 case "$target" in
5298   *-*-aix*)
5299     AC_CACHE_CHECK(linker large toc support,
5300     gcc_cv_ld_large_toc,
5301     [gcc_cv_ld_large_toc=no
5302     if test x$gcc_cv_as != x ; then
5303       cat > conftest.s <<EOF
5304         .toc
5305 LC..1:
5306         .tc a[[TC]],a[[RW]]
5307         .extern a[[RW]]
5308         .csect .text[[PR]]
5309 .largetoctest:
5310         addis 9,LC..1@u(2)
5311         ld 3,LC..1@l(9)
5312 EOF
5313       if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1; then
5314         gcc_cv_ld_large_toc=yes
5315       fi
5316       rm -f conftest conftest.o conftest.s
5317     fi
5318     ])
5319     if test x"$gcc_cv_ld_large_toc" = xyes; then
5320       AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
5321     [Define if your PowerPC64 linker supports a large TOC.])
5322     fi
5323     ;;
5324 esac
5325
5326 AC_CACHE_CHECK(linker --build-id support,
5327   gcc_cv_ld_buildid,
5328   [gcc_cv_ld_buildid=no
5329   if test $in_tree_ld = yes ; then
5330     if test "$gcc_cv_gld_major_version" -eq 2 -a \
5331        "$gcc_cv_gld_minor_version" -ge 18 -o \
5332        "$gcc_cv_gld_major_version" -gt 2 \
5333        && test $in_tree_ld_is_elf = yes; then
5334       gcc_cv_ld_buildid=yes
5335     fi
5336   elif test x$gcc_cv_ld != x; then
5337     if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then
5338       gcc_cv_ld_buildid=yes
5339     fi
5340   fi])
5341 if test x"$gcc_cv_ld_buildid" = xyes; then
5342   AC_DEFINE(HAVE_LD_BUILDID, 1,
5343   [Define if your linker supports --build-id.])
5344 fi
5345
5346 AC_ARG_ENABLE(linker-build-id,
5347 [AS_HELP_STRING([--enable-linker-build-id],
5348                 [compiler will always pass --build-id to linker])],
5349 [],
5350 enable_linker_build_id=no)
5351
5352 if test x"$enable_linker_build_id" = xyes; then
5353   if test x"$gcc_cv_ld_buildid" = xyes; then
5354     AC_DEFINE(ENABLE_LD_BUILDID, 1,
5355     [Define if gcc should always pass --build-id to linker.])
5356   else
5357     AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored)
5358   fi
5359 fi
5360
5361 # In binutils 2.21, GNU ld gained support for new emulations fully
5362 # supporting the Solaris 2 ABI.  Detect their presence in the linker used.
5363 AC_CACHE_CHECK(linker *_sol2 emulation support,
5364   gcc_cv_ld_sol2_emulation,
5365   [gcc_cv_ld_sol2_emulation=no
5366   if test $in_tree_ld = yes ; then
5367     if test "$gcc_cv_gld_major_version" -eq 2 -a \
5368        "$gcc_cv_gld_minor_version" -ge 21 -o \
5369        "$gcc_cv_gld_major_version" -gt 2 \
5370        && test $in_tree_ld_is_elf = yes; then
5371       gcc_cv_ld_sol2_emulation=yes
5372     fi
5373   elif test x$gcc_cv_ld != x; then
5374     if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \
5375        grep _sol2 > /dev/null; then
5376       gcc_cv_ld_sol2_emulation=yes
5377     fi
5378   fi])
5379 if test x"$gcc_cv_ld_sol2_emulation" = xyes; then
5380   AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1,
5381   [Define if your linker supports the *_sol2 emulations.])
5382 fi
5383
5384 AC_CACHE_CHECK(linker --sysroot support,
5385   gcc_cv_ld_sysroot,
5386   [gcc_cv_ld_sysroot=no
5387   if test $in_tree_ld = yes ; then
5388       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
5389         gcc_cv_ld_sysroot=yes
5390       fi
5391   elif test x$gcc_cv_ld != x; then
5392     if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
5393       gcc_cv_ld_sysroot=yes
5394     fi
5395   fi])
5396 if test x"$gcc_cv_ld_sysroot" = xyes; then
5397   AC_DEFINE(HAVE_LD_SYSROOT, 1,
5398   [Define if your linker supports --sysroot.])
5399 fi
5400
5401 case $target in
5402 *-*-solaris2*)
5403   # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
5404   AC_CACHE_CHECK([system-provided CRTs on Solaris],
5405     gcc_cv_solaris_crts,
5406     [gcc_cv_solaris_crts=no
5407      if test x$host != x$target; then
5408        if test "x$with_sysroot" = xyes; then
5409          target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root"
5410        else
5411          target_sysroot="${with_sysroot}"
5412        fi
5413      fi
5414      target_libdir="$target_sysroot/usr/lib"
5415      # At the time they were added, gcrt1.o became a symlink for backwards
5416      # compatibility on x86, while crt1.o was added on sparc, so check for that.
5417      case $target in
5418        i?86-*-solaris2* | x86_64-*-solaris2*)
5419          if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi
5420          ;;
5421        sparc*-*-solaris2*)
5422          if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi
5423          ;;
5424      esac])
5425   ;;
5426 esac
5427 if test x$gcc_cv_solaris_crts = xyes; then
5428   AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
5429             [Define if the system-provided CRTs are present on Solaris.])
5430 fi
5431
5432 # Test for stack protector support in target C library.
5433 AC_CACHE_CHECK(__stack_chk_fail in target C library,
5434       gcc_cv_libc_provides_ssp,
5435       [gcc_cv_libc_provides_ssp=no
5436     case "$target" in
5437        *-*-musl*)
5438          # All versions of musl provide stack protector
5439          gcc_cv_libc_provides_ssp=yes;;
5440        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
5441       # glibc 2.4 and later provides __stack_chk_fail and
5442       # either __stack_chk_guard, or TLS access to stack guard canary.
5443       GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [
5444       [if test -f $target_header_dir/features.h \
5445          && $EGREP '^[  ]*#[    ]*define[       ]+__GNU_LIBRARY__[      ]+([1-9][0-9]|[6-9])' \
5446             $target_header_dir/features.h > /dev/null; then
5447         if $EGREP '^[   ]*#[    ]*define[       ]+__UCLIBC__[   ]+1' \
5448              $target_header_dir/features.h > /dev/null && \
5449              test -f $target_header_dir/bits/uClibc_config.h && \
5450              $EGREP '^[         ]*#[    ]*define[       ]+__UCLIBC_HAS_SSP__[   ]+1' \
5451              $target_header_dir/bits/uClibc_config.h > /dev/null; then
5452           gcc_cv_libc_provides_ssp=yes
5453         fi
5454       # all versions of Bionic support stack protector
5455       elif test -f $target_header_dir/sys/cdefs.h \
5456         && $EGREP '^[  ]*#[    ]*define[       ]+__BIONIC__[   ]+1' \
5457            $target_header_dir/sys/cdefs.h > /dev/null; then
5458          gcc_cv_libc_provides_ssp=yes
5459       fi]])
5460         ;;
5461        *-*-gnu*)
5462          # Avoid complicated tests (see
5463          # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
5464          # simply assert that glibc does provide this, which is true for all
5465          # realistically usable GNU/Hurd configurations.
5466          # All supported versions of musl provide it as well
5467          gcc_cv_libc_provides_ssp=yes;;
5468        *-*-darwin* | *-*-freebsd*)
5469          AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
5470            [echo "no __stack_chk_fail on this target"])
5471         ;;
5472   *) gcc_cv_libc_provides_ssp=no ;;
5473     esac])
5474
5475 if test x$gcc_cv_libc_provides_ssp = xyes; then
5476   AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
5477             [Define if your target C library provides stack protector support])
5478 fi
5479
5480 # Check whether --enable-default-ssp was given.
5481 AC_ARG_ENABLE(default-ssp,
5482 [AS_HELP_STRING([--enable-default-ssp],
5483   [enable Stack Smashing Protection as default])],[
5484 if test x$gcc_cv_libc_provides_ssp = xyes; then
5485   case "$target" in
5486     ia64*-*-*) enable_default_ssp=no ;;
5487     *) enable_default_ssp=$enableval ;;
5488   esac
5489 else
5490   enable_default_ssp=no
5491 fi],
5492 enable_default_ssp=no)
5493 if test x$enable_default_ssp = xyes ; then
5494   AC_DEFINE(ENABLE_DEFAULT_SSP, 1,
5495       [Define if your target supports default stack protector and it is enabled.])
5496 fi
5497 AC_SUBST([enable_default_ssp])
5498
5499 # Test for <sys/sdt.h> on the target.
5500 GCC_TARGET_TEMPLATE([HAVE_SYS_SDT_H])
5501 AC_MSG_CHECKING(sys/sdt.h in the target C library)
5502 have_sys_sdt_h=no
5503 if test -f $target_header_dir/sys/sdt.h; then
5504   have_sys_sdt_h=yes
5505   AC_DEFINE(HAVE_SYS_SDT_H, 1,
5506             [Define if your target C library provides sys/sdt.h])
5507 fi
5508 AC_MSG_RESULT($have_sys_sdt_h)
5509
5510 # Check if TFmode long double should be used by default or not.
5511 # Some glibc targets used DFmode long double, but with glibc 2.4
5512 # and later they can use TFmode.
5513 case "$target" in
5514   powerpc*-*-linux* | \
5515   sparc*-*-linux* | \
5516   s390*-*-linux* | \
5517   alpha*-*-linux*)
5518     AC_ARG_WITH(long-double-128,
5519       [AS_HELP_STRING([--with-long-double-128],
5520                       [use 128-bit long double by default])],
5521       gcc_cv_target_ldbl128="$with_long_double_128",
5522       [GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_target_ldbl128=yes], [
5523       [gcc_cv_target_ldbl128=no
5524       grep '^[  ]*#[    ]*define[       ][      ]*__LONG_DOUBLE_MATH_OPTIONAL' \
5525         $target_header_dir/bits/wordsize.h > /dev/null 2>&1 \
5526       && gcc_cv_target_ldbl128=yes
5527       ]])])
5528     ;;
5529 esac
5530 if test x$gcc_cv_target_ldbl128 = xyes; then
5531   AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
5532             [Define if TFmode long double should be the default])
5533 fi
5534
5535 AC_MSG_CHECKING(dl_iterate_phdr in target C library)
5536 gcc_cv_target_dl_iterate_phdr=unknown
5537 case "$target" in
5538   # Restrict to Solaris 11+.  While most of the Solaris 11 linker changes
5539   # were backported to Solaris 10 Update 10, dl_iterate_phdr only lives in
5540   # libdl there, both complicating its use and breaking compatibility
5541   # between Solaris 10 updates.
5542   *-*-solaris2.1[[1-9]]*)
5543     # <link.h> needs both a dl_iterate_phdr declaration and support for
5544     # compilation with largefile support.
5545     if grep dl_iterate_phdr $target_header_dir/link.h > /dev/null 2>&1 \
5546       && grep 'large file capable' $target_header_dir/link.h > /dev/null 2>&1; then
5547       gcc_cv_target_dl_iterate_phdr=yes
5548     else
5549       gcc_cv_target_dl_iterate_phdr=no
5550     fi
5551     ;;
5552   *-*-dragonfly* | *-*-freebsd*)
5553     if grep dl_iterate_phdr $target_header_dir/sys/link_elf.h > /dev/null 2>&1; then
5554       gcc_cv_target_dl_iterate_phdr=yes
5555     else
5556       gcc_cv_target_dl_iterate_phdr=no
5557     fi
5558     ;;
5559   *-linux-musl*)
5560     gcc_cv_target_dl_iterate_phdr=yes
5561     ;;
5562 esac
5563 GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
5564 if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
5565    AC_DEFINE(TARGET_DL_ITERATE_PHDR, 1,
5566 [Define if your target C library provides the `dl_iterate_phdr' function.])
5567 fi
5568 AC_MSG_RESULT($gcc_cv_target_dl_iterate_phdr)
5569
5570 # We no longer support different GC mechanisms.  Emit an error if
5571 # the user configures with --with-gc.
5572 AC_ARG_WITH(gc,
5573 [AS_HELP_STRING([--with-gc={page,zone}],
5574                 [this option is not supported anymore.  It used to choose
5575                  the garbage collection mechanism to use with the compiler])],
5576 [AC_MSG_ERROR([Configure option --with-gc is only supported up to GCC 4.7.x])],
5577 [])
5578
5579 # Libraries to use on the host.  This will normally be set by the top
5580 # level Makefile.  Here we simply capture the value for our Makefile.
5581 if test -z "${HOST_LIBS+set}"; then
5582   HOST_LIBS=
5583 fi
5584 AC_SUBST(HOST_LIBS)
5585
5586 # Use the system's zlib library.
5587 AM_ZLIB
5588
5589 dnl Very limited version of automake's enable-maintainer-mode
5590
5591 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
5592   dnl maintainer-mode is disabled by default
5593   AC_ARG_ENABLE(maintainer-mode,
5594 [AS_HELP_STRING([--enable-maintainer-mode],
5595                 [enable make rules and dependencies not useful
5596                  (and sometimes confusing) to the casual installer])],
5597       maintainer_mode=$enableval,
5598       maintainer_mode=no)
5599
5600 AC_MSG_RESULT($maintainer_mode)
5601
5602 if test "$maintainer_mode" = "yes"; then
5603   MAINT=''
5604 else
5605   MAINT='#'
5606 fi
5607 AC_SUBST(MAINT)dnl
5608
5609 dnl Whether to prevent multiple front-ends from linking at the same time
5610
5611 AC_MSG_CHECKING([whether to avoid linking multiple front-ends at once])
5612   AC_ARG_ENABLE(link-mutex,
5613 [AS_HELP_STRING([--enable-link-mutex],
5614                 [avoid linking multiple front-ends at once to avoid thrashing
5615                  on the build machine])],
5616       do_link_mutex=$enableval,
5617       do_link_mutex=no)
5618 AC_MSG_RESULT($do_link_mutex)
5619
5620 if test "$do_link_mutex" = "yes"; then
5621    DO_LINK_MUTEX=true
5622 else
5623    DO_LINK_MUTEX=false
5624 fi
5625 AC_SUBST(DO_LINK_MUTEX)
5626
5627 # --------------
5628 # Language hooks
5629 # --------------
5630
5631 # Make empty files to contain the specs and options for each language.
5632 # Then add #include lines to for a compiler that has specs and/or options.
5633
5634 subdirs=
5635 lang_opt_files=
5636 lang_specs_files=
5637 lang_tree_files=
5638 # These (without "all_") are set in each config-lang.in.
5639 # `language' must be a single word so is spelled singularly.
5640 all_languages=
5641 all_compilers=
5642 all_outputs='Makefile'
5643 # List of language makefile fragments.
5644 all_lang_makefrags=
5645 # Additional files for gengtype
5646 all_gtfiles="$target_gtfiles"
5647
5648 # These are the languages that are set in --enable-languages,
5649 # and are available in the GCC tree.
5650 all_selected_languages=
5651
5652 # Add the language fragments.
5653 # Languages are added via two mechanisms.  Some information must be
5654 # recorded in makefile variables, these are defined in config-lang.in.
5655 # We accumulate them and plug them into the main Makefile.
5656 # The other mechanism is a set of hooks for each of the main targets
5657 # like `clean', `install', etc.
5658
5659 language_hooks="Make-hooks"
5660
5661 for lang in ${srcdir}/*/config-lang.in
5662 do
5663 changequote(,)dnl
5664         test "$lang" = "${srcdir}/*/config-lang.in" && continue
5665
5666         lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
5667         if test "x$lang_alias" = x
5668         then
5669               echo "$lang doesn't set \$language." 1>&2
5670               exit 1
5671         fi
5672         subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
5673         subdirs="$subdirs $subdir"
5674
5675         # $gcc_subdir is where the gcc integration files are to be found
5676         # for a language, both for internal compiler purposes (compiler
5677         # sources implementing front-end to GCC tree converters), and for
5678         # build infrastructure purposes (Make-lang.in, etc.)
5679         #
5680         # This will be <subdir> (relative to $srcdir) if a line like
5681         # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
5682         # is found in <langdir>/config-lang.in, and will remain <langdir>
5683         # otherwise.
5684         #
5685         # Except for the language alias (fetched above), the regular
5686         # "config-lang.in" contents are always retrieved from $gcc_subdir,
5687         # so a <langdir>/config-lang.in setting gcc_subdir typically sets
5688         # only this and the language alias.
5689
5690         gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^   ]*\).*$,\1,p' $lang`
5691         if [ "$gcc_subdir" = "" ]; then
5692            gcc_subdir="$subdir"
5693         fi
5694
5695         case ",$enable_languages," in
5696         *,$lang_alias,*)
5697             all_selected_languages="$all_selected_languages $lang_alias"
5698             if test -f $srcdir/$gcc_subdir/lang-specs.h; then
5699                 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
5700             fi
5701             ;;
5702         esac
5703 changequote([,])dnl
5704
5705         language=
5706         boot_language=
5707         compilers=
5708         outputs=
5709         gtfiles=
5710         subdir_requires=
5711         . ${srcdir}/$gcc_subdir/config-lang.in
5712         if test "x$language" = x
5713         then
5714                 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
5715                 exit 1
5716         fi
5717
5718         ok=:
5719         case ",$enable_languages," in
5720                 *,$lang_alias,*) ;;
5721                 *)
5722                         for i in $subdir_requires; do
5723                                 test -f "${srcdir}/$i/config-lang.in" && continue
5724                                 ok=false
5725                                 break
5726                         done
5727                 ;;
5728         esac
5729         $ok || continue
5730
5731         all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
5732         if test -f $srcdir/$gcc_subdir/lang.opt; then
5733             lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
5734             all_opt_files="$all_opt_files $srcdir/$gcc_subdir/lang.opt"
5735         fi
5736         if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
5737             lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
5738         fi
5739         all_languages="$all_languages $language"
5740         all_compilers="$all_compilers $compilers"
5741         all_outputs="$all_outputs $outputs"
5742         all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
5743         case ",$enable_languages," in
5744                 *,lto,*)
5745                     AC_DEFINE(ENABLE_LTO, 1, [Define to enable LTO support.])
5746                     enable_lto=yes
5747                     AC_SUBST(enable_lto)
5748                     ;;
5749                 *) ;;
5750         esac
5751 done
5752
5753 check_languages=
5754 for language in $all_selected_languages
5755 do
5756         check_languages="$check_languages check-$language"
5757 done
5758
5759 # We link each language in with a set of hooks, reached indirectly via
5760 # lang.${target}.  Only do so for selected languages.
5761
5762 rm -f Make-hooks
5763 touch Make-hooks
5764 target_list="all.cross start.encap rest.encap tags \
5765         install-common install-man install-info install-pdf install-html dvi \
5766         pdf html uninstall info man srcextra srcman srcinfo \
5767         mostlyclean clean distclean maintainer-clean install-plugin"
5768
5769 for t in $target_list
5770 do
5771         x=
5772         for lang in $all_selected_languages
5773         do
5774                 x="$x $lang.$t"
5775         done
5776         echo "lang.$t: $x" >> Make-hooks
5777 done
5778
5779 # --------
5780 # Option include files
5781 # --------
5782
5783 ${AWK} -f $srcdir/opt-include.awk $all_opt_files > option-includes.mk
5784 option_includes="option-includes.mk"
5785 AC_SUBST_FILE(option_includes)
5786
5787 # --------
5788 # UNSORTED
5789 # --------
5790
5791 # Create .gdbinit.
5792
5793 echo "dir ." > .gdbinit
5794 echo "dir ${srcdir}" >> .gdbinit
5795 if test x$gdb_needs_out_file_path = xyes
5796 then
5797         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
5798 fi
5799 if test "x$subdirs" != x; then
5800         for s in $subdirs
5801         do
5802                 echo "dir ${srcdir}/$s" >> .gdbinit
5803         done
5804 fi
5805 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
5806 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
5807
5808 # Put a breakpoint on __asan_report_error to help with debugging buffer
5809 # overflow.
5810 case "$CFLAGS" in
5811 *-fsanitize=address*)
5812   echo "source ${srcdir}/gdbasan.in" >> .gdbinit
5813   ;;
5814 esac
5815
5816 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
5817 AC_SUBST(gcc_tooldir)
5818 AC_SUBST(dollar)
5819
5820 # Find a directory in which to install a shared libgcc.
5821
5822 AC_ARG_ENABLE(version-specific-runtime-libs,
5823 [AS_HELP_STRING([--enable-version-specific-runtime-libs],
5824                 [specify that runtime libraries should be
5825                  installed in a compiler-specific directory])])
5826
5827 # Substitute configuration variables
5828 AC_SUBST(subdirs)
5829 AC_SUBST(srcdir)
5830 AC_SUBST(all_compilers)
5831 AC_SUBST(all_gtfiles)
5832 AC_SUBST(all_lang_makefrags)
5833 AC_SUBST(all_languages)
5834 AC_SUBST(all_selected_languages)
5835 AC_SUBST(build_exeext)
5836 AC_SUBST(build_install_headers_dir)
5837 AC_SUBST(build_xm_file_list)
5838 AC_SUBST(build_xm_include_list)
5839 AC_SUBST(build_xm_defines)
5840 AC_SUBST(build_file_translate)
5841 AC_SUBST(check_languages)
5842 AC_SUBST(cpp_install_dir)
5843 AC_SUBST(xmake_file)
5844 AC_SUBST(tmake_file)
5845 AC_SUBST(TM_ENDIAN_CONFIG)
5846 AC_SUBST(TM_MULTILIB_CONFIG)
5847 AC_SUBST(TM_MULTILIB_EXCEPTIONS_CONFIG)
5848 AC_SUBST(extra_gcc_objs)
5849 AC_SUBST(user_headers_inc_next_pre)
5850 AC_SUBST(user_headers_inc_next_post)
5851 AC_SUBST(extra_headers_list)
5852 AC_SUBST(extra_objs)
5853 AC_SUBST(extra_programs)
5854 AC_SUBST(float_h_file)
5855 AC_SUBST(gcc_config_arguments)
5856 AC_SUBST(gcc_gxx_include_dir)
5857 AC_SUBST(gcc_gxx_include_dir_add_sysroot)
5858 AC_SUBST(host_exeext)
5859 AC_SUBST(host_xm_file_list)
5860 AC_SUBST(host_xm_include_list)
5861 AC_SUBST(host_xm_defines)
5862 AC_SUBST(out_host_hook_obj)
5863 AC_SUBST(install)
5864 AC_SUBST(lang_opt_files)
5865 AC_SUBST(lang_specs_files)
5866 AC_SUBST(lang_tree_files)
5867 AC_SUBST(local_prefix)
5868 AC_SUBST(md_file)
5869 AC_SUBST(objc_boehm_gc)
5870 AC_SUBST(out_file)
5871 AC_SUBST(out_object_file)
5872 AC_SUBST(common_out_file)
5873 AC_SUBST(common_out_object_file)
5874 AC_SUBST(tm_file_list)
5875 AC_SUBST(tm_include_list)
5876 AC_SUBST(tm_defines)
5877 AC_SUBST(tm_p_file_list)
5878 AC_SUBST(tm_p_include_list)
5879 AC_SUBST(xm_file_list)
5880 AC_SUBST(xm_include_list)
5881 AC_SUBST(xm_defines)
5882 AC_SUBST(use_gcc_stdint)
5883 AC_SUBST(c_target_objs)
5884 AC_SUBST(cxx_target_objs)
5885 AC_SUBST(fortran_target_objs)
5886 AC_SUBST(target_cpu_default)
5887
5888 AC_SUBST_FILE(language_hooks)
5889
5890 # Echo link setup.
5891 if test x${build} = x${host} ; then
5892   if test x${host} = x${target} ; then
5893     echo "Links are now set up to build a native compiler for ${target}." 1>&2
5894   else
5895     echo "Links are now set up to build a cross-compiler" 1>&2
5896     echo " from ${host} to ${target}." 1>&2
5897   fi
5898 else
5899   if test x${host} = x${target} ; then
5900     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
5901     echo " for ${target}." 1>&2
5902   else
5903     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
5904     echo " from ${host} to ${target}." 1>&2
5905   fi
5906 fi
5907
5908 AC_ARG_VAR(GMPLIBS,[How to link GMP])
5909 AC_ARG_VAR(GMPINC,[How to find GMP include files])
5910
5911 AC_ARG_VAR(ISLLIBS,[How to link isl])
5912 AC_ARG_VAR(ISLINC,[How to find isl include files])
5913 if test "x${ISLLIBS}" != "x" ; then
5914    AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
5915 fi
5916
5917 # Check whether isl_options_set_schedule_serialize_sccs is available;
5918 # it's new in isl 0.15.
5919 if test "x${ISLLIBS}" != "x" ; then
5920   saved_CXXFLAGS="$CXXFLAGS"
5921   CXXFLAGS="$CXXFLAGS $ISLINC"
5922   saved_LIBS="$LIBS"
5923   LIBS="$LIBS $ISLLIBS $GMPLIBS"
5924
5925   AC_MSG_CHECKING([Checking for isl_options_set_schedule_serialize_sccs])
5926   AC_TRY_LINK([#include <isl/schedule.h>],
5927               [isl_options_set_schedule_serialize_sccs (NULL, 0);],
5928               [ac_has_isl_options_set_schedule_serialize_sccs=yes],
5929               [ac_has_isl_options_set_schedule_serialize_sccs=no])
5930   AC_MSG_RESULT($ac_has_isl_options_set_schedule_serialize_sccs)
5931
5932   LIBS="$saved_LIBS"
5933   CXXFLAGS="$saved_CXXFLAGS"
5934
5935   if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
5936      AC_DEFINE(HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS, 1,
5937                [Define if isl_options_set_schedule_serialize_sccs exists.])
5938   fi
5939 fi
5940
5941 GCC_ENABLE_PLUGINS
5942 AC_SUBST(pluginlibs)
5943 AC_SUBST(enable_plugin)
5944 if test x"$enable_plugin" = x"yes"; then
5945   AC_DEFINE(ENABLE_PLUGIN, 1, [Define to enable plugin support.])
5946 fi
5947
5948
5949 # Enable --enable-host-shared
5950 AC_ARG_ENABLE(host-shared,
5951 [AS_HELP_STRING([--enable-host-shared],
5952                 [build host code as shared libraries])],
5953 [PICFLAG=-fPIC], [PICFLAG=])
5954 AC_SUBST(enable_host_shared)
5955 AC_SUBST(PICFLAG)
5956
5957
5958 AC_ARG_ENABLE(libquadmath-support,
5959 [AS_HELP_STRING([--disable-libquadmath-support],
5960   [disable libquadmath support for Fortran])],
5961 ENABLE_LIBQUADMATH_SUPPORT=$enableval,
5962 ENABLE_LIBQUADMATH_SUPPORT=yes)
5963 if test "${ENABLE_LIBQUADMATH_SUPPORT}" != "no" ; then
5964   AC_DEFINE(ENABLE_LIBQUADMATH_SUPPORT, 1,
5965             [Define to 1 to enable libquadmath support])
5966 fi
5967
5968
5969 # Specify what hash style to use by default.
5970 AC_ARG_WITH([linker-hash-style],
5971 [AC_HELP_STRING([--with-linker-hash-style={sysv,gnu,both}],
5972                 [specify the linker hash style])],
5973 [case x"$withval" in
5974    xsysv)
5975      LINKER_HASH_STYLE=sysv
5976      ;;
5977    xgnu)
5978      LINKER_HASH_STYLE=gnu
5979      ;;
5980    xboth)
5981      LINKER_HASH_STYLE=both
5982      ;;
5983    *)
5984      AC_MSG_ERROR([$withval is an invalid option to --with-linker-hash-style])
5985      ;;
5986  esac],
5987 [LINKER_HASH_STYLE=''])
5988 if test x"${LINKER_HASH_STYLE}" != x; then
5989   AC_DEFINE_UNQUOTED(LINKER_HASH_STYLE, "$LINKER_HASH_STYLE",
5990                                          [The linker hash style])
5991 fi
5992
5993 # Specify what should be the default of -fdiagnostics-color option.
5994 AC_ARG_WITH([diagnostics-color],
5995 [AC_HELP_STRING([--with-diagnostics-color={never,auto,auto-if-env,always}],
5996                 [specify the default of -fdiagnostics-color option
5997                  auto-if-env stands for -fdiagnostics-color=auto if
5998                  GCC_COLOR environment variable is present and
5999                  -fdiagnostics-color=never otherwise])],
6000 [case x"$withval" in
6001    xnever)
6002      DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_NO
6003      ;;
6004    xauto)
6005      DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO
6006      ;;
6007    xauto-if-env)
6008      DIAGNOSTICS_COLOR_DEFAULT=-1
6009      ;;
6010    xalways)
6011      DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_YES
6012      ;;
6013    *)
6014      AC_MSG_ERROR([$withval is an invalid option to --with-diagnostics-color])
6015      ;;
6016  esac],
6017 [DIAGNOSTICS_COLOR_DEFAULT=DIAGNOSTICS_COLOR_AUTO])
6018 AC_DEFINE_UNQUOTED(DIAGNOSTICS_COLOR_DEFAULT, $DIAGNOSTICS_COLOR_DEFAULT,
6019                    [The default for -fdiagnostics-color option])
6020
6021 # Generate gcc-driver-name.h containing GCC_DRIVER_NAME for the benefit
6022 # of jit/jit-playback.c.
6023 cat > gcc-driver-name.h <<EOF
6024 #define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
6025 EOF
6026
6027 # Check whether --enable-default-pie was given.
6028 AC_ARG_ENABLE(default-pie,
6029 [AS_HELP_STRING([--enable-default-pie],
6030   [enable Position Independent Executable as default])],
6031 enable_default_pie=$enableval,
6032 enable_default_pie=no)
6033 if test x$enable_default_pie = xyes ; then
6034   AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
6035       [Define if your target supports default PIE and it is enabled.])
6036 fi
6037 AC_SUBST([enable_default_pie])
6038
6039 # Check if -fno-PIE works.
6040 AC_CACHE_CHECK([for -fno-PIE option],
6041   [gcc_cv_c_no_fpie],
6042   [saved_CXXFLAGS="$CXXFLAGS"
6043    CXXFLAGS="$CXXFLAGS -fno-PIE"
6044    AC_COMPILE_IFELSE([int main(void) {return 0;}],
6045      [gcc_cv_c_no_fpie=yes],
6046      [gcc_cv_c_no_fpie=no])
6047    CXXFLAGS="$saved_CXXFLAGS"])
6048 if test "$gcc_cv_c_no_fpie" = "yes"; then
6049   NO_PIE_CFLAGS="-fno-PIE"
6050 fi
6051 AC_SUBST([NO_PIE_CFLAGS])
6052
6053 # Check if -no-pie works.
6054 AC_CACHE_CHECK([for -no-pie option],
6055   [gcc_cv_no_pie],
6056   [saved_LDFLAGS="$LDFLAGS"
6057    LDFLAGS="$LDFLAGS -no-pie"
6058    AC_LINK_IFELSE([int main(void) {return 0;}],
6059      [gcc_cv_no_pie=yes],
6060      [gcc_cv_no_pie=no])
6061    LDFLAGS="$saved_LDFLAGS"])
6062 if test "$gcc_cv_no_pie" = "yes"; then
6063   NO_PIE_FLAG="-no-pie"
6064 fi
6065 AC_SUBST([NO_PIE_FLAG])
6066
6067 # Check linker supports '-z bndplt'
6068 ld_bndplt_support=no
6069 AC_MSG_CHECKING(linker -z bndplt option)
6070 if test x"$ld_is_gold" = xno; then
6071   if test $in_tree_ld = yes ; then
6072     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then
6073       ld_bndplt_support=yes
6074     fi
6075   elif test x$gcc_cv_ld != x; then
6076     # Check if linker supports -a bndplt option
6077     if $gcc_cv_ld --help 2>/dev/null | grep -- '-z bndplt' > /dev/null; then
6078       ld_bndplt_support=yes
6079     fi
6080   fi
6081 fi
6082 if test x"$ld_bndplt_support" = xyes; then
6083   AC_DEFINE(HAVE_LD_BNDPLT_SUPPORT, 1,
6084         [Define if your linker supports -z bndplt])
6085 fi
6086 AC_MSG_RESULT($ld_bndplt_support)
6087
6088 # Configure the subdirectories
6089 # AC_CONFIG_SUBDIRS($subdirs)
6090
6091 # Create the Makefile
6092 # and configure language subdirectories
6093 AC_CONFIG_FILES($all_outputs)
6094
6095 AC_CONFIG_COMMANDS([default],
6096 [
6097 case ${CONFIG_HEADERS} in
6098   *auto-host.h:config.in*)
6099   echo > cstamp-h ;;
6100 esac
6101 # Make sure all the subdirs exist.
6102 for d in $subdirs doc build common c-family
6103 do
6104     test -d $d || mkdir $d
6105 done
6106 ],
6107 [subdirs='$subdirs'])
6108 AC_OUTPUT
6109