gcc/configure.ac

   1 # configure.ac for GCC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   5 # 2007, 2008 Free Software Foundation, Inc.
   6
   7 #This file is part of GCC.
   8
   9 #GCC is free software; you can redistribute it and/or modify it under
  10 #the terms of the GNU General Public License as published by the Free
  11 #Software Foundation; either version 3, or (at your option) any later
  12 #version.
  13
  14 #GCC is distributed in the hope that it will be useful, but WITHOUT
  15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 #FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 #for more details.
  18
  19 #You should have received a copy of the GNU General Public License
  20 #along with GCC; see the file COPYING3.  If not see
  21 #<http://www.gnu.org/licenses/>.
  22
  23 # --------------------------------
  24 # Initialization and sanity checks
  25 # --------------------------------
  26
  27 AC_PREREQ(2.59)
  28 AC_INIT
  29 AC_CONFIG_SRCDIR(tree.c)
  30 AC_CONFIG_HEADER(auto-host.h:config.in)
  31
  32 gcc_version=`cat $srcdir/BASE-VER`
  33
  34 # Determine the host, build, and target systems
  35 AC_CANONICAL_BUILD
  36 AC_CANONICAL_HOST
  37 AC_CANONICAL_TARGET
  38
  39 # Determine the noncanonical target name, for directory use.
  40 ACX_NONCANONICAL_TARGET
  41
  42 # Determine the target- and build-specific subdirectories
  43 GCC_TOPLEV_SUBDIRS
  44
  45 # Set program_transform_name
  46 AC_ARG_PROGRAM
  47
  48 # Check for bogus environment variables.
  49 # Test if LIBRARY_PATH contains the notation for the current directory
  50 # since this would lead to problems installing/building glibc.
  51 # LIBRARY_PATH contains the current directory if one of the following
  52 # is true:
  53 # - one of the terminals (":" and ";") is the first or last sign
  54 # - two terminals occur directly after each other
  55 # - the path contains an element with a dot in it
  56 AC_MSG_CHECKING(LIBRARY_PATH variable)
  57 changequote(,)dnl
  58 case ${LIBRARY_PATH} in
  59   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  60     library_path_setting="contains current directory"
  61     ;;
  62   *)
  63     library_path_setting="ok"
  64     ;;
  65 esac
  66 changequote([,])dnl
  67 AC_MSG_RESULT($library_path_setting)
  68 if test "$library_path_setting" != "ok"; then
  69 AC_MSG_ERROR([
  70 *** LIBRARY_PATH shouldn't contain the current directory when
  71 *** building gcc. Please change the environment variable
  72 *** and run configure again.])
  73 fi
  74
  75 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  76 # since this would lead to problems installing/building glibc.
  77 # GCC_EXEC_PREFIX contains the current directory if one of the following
  78 # is true:
  79 # - one of the terminals (":" and ";") is the first or last sign
  80 # - two terminals occur directly after each other
  81 # - the path contains an element with a dot in it
  82 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  83 changequote(,)dnl
  84 case ${GCC_EXEC_PREFIX} in
  85   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  86     gcc_exec_prefix_setting="contains current directory"
  87     ;;
  88   *)
  89     gcc_exec_prefix_setting="ok"
  90     ;;
  91 esac
  92 changequote([,])dnl
  93 AC_MSG_RESULT($gcc_exec_prefix_setting)
  94 if test "$gcc_exec_prefix_setting" != "ok"; then
  95 AC_MSG_ERROR([
  96 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  97 *** building gcc. Please change the environment variable
  98 *** and run configure again.])
  99 fi
 100
 101 # -----------
 102 # Directories
 103 # -----------
 104
 105 # Specify the local prefix
 106 local_prefix=
 107 AC_ARG_WITH(local-prefix,
 108 [  --with-local-prefix=DIR specifies directory to put local include],
 109 [case "${withval}" in
 110 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 111 no)     ;;
 112 *)      local_prefix=$with_local_prefix ;;
 113 esac])
 114
 115 # Default local prefix if it is empty
 116 if test x$local_prefix = x; then
 117         local_prefix=/usr/local
 118 fi
 119
 120 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 121 # passed in by the toplevel make and thus we'd get different behavior
 122 # depending on where we built the sources.
 123 gcc_gxx_include_dir=
 124 # Specify the g++ header file directory
 125 AC_ARG_WITH(gxx-include-dir,
 126 [  --with-gxx-include-dir=DIR
 127                           specifies directory to put g++ header files],
 128 [case "${withval}" in
 129 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 130 no)     ;;
 131 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 132 esac])
 133
 134 # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO.
 135 if test x${gcc_gxx_include_dir} = x; then
 136   if test x${enable_version_specific_runtime_libs} = xyes; then
 137     gcc_gxx_include_dir='${libsubdir}/include/c++'
 138   else
 139     libstdcxx_incdir='include/c++/$(version)'
 140     if test x$host != x$target; then
 141        libstdcxx_incdir="$target_alias/$libstdcxx_incdir"
 142     fi
 143     gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir"
 144   fi
 145 fi
 146
 147 AC_ARG_WITH(cpp_install_dir,
 148 [  --with-cpp-install-dir=DIR
 149                           install the user visible C preprocessor in DIR
 150                           (relative to PREFIX) as well as PREFIX/bin],
 151 [if test x$withval = xyes; then
 152   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 153 elif test x$withval != xno; then
 154   cpp_install_dir=$withval
 155 fi])
 156
 157 # We would like to our source tree to be readonly.  However when releases or
 158 # pre-releases are generated, the flex/bison generated files as well as the
 159 # various formats of manuals need to be included along with the rest of the
 160 # sources.  Therefore we have --enable-generated-files-in-srcdir to do
 161 # just that.
 162
 163 AC_MSG_CHECKING([whether to place generated files in the source directory])
 164   dnl generated-files-in-srcdir is disabled by default
 165   AC_ARG_ENABLE(generated-files-in-srcdir,
 166 [  --enable-generated-files-in-srcdir
 167                           put copies of generated files in source dir
 168                           intended for creating source tarballs for users
 169                           without texinfo bison or flex.],
 170       generated_files_in_srcdir=$enableval,
 171       generated_files_in_srcdir=no)
 172
 173 AC_MSG_RESULT($generated_files_in_srcdir)
 174
 175 if test "$generated_files_in_srcdir" = "yes"; then
 176   GENINSRC=''
 177 else
 178   GENINSRC='#'
 179 fi
 180 AC_SUBST(GENINSRC)
 181
 182 # -------------------
 183 # Find default linker
 184 # -------------------
 185
 186 # With GNU ld
 187 AC_ARG_WITH(gnu-ld,
 188 [  --with-gnu-ld           arrange to work with GNU ld.],
 189 gnu_ld_flag="$with_gnu_ld",
 190 gnu_ld_flag=no)
 191
 192 # With pre-defined ld
 193 AC_ARG_WITH(ld,
 194 [  --with-ld               arrange to use the specified ld (full pathname)],
 195 DEFAULT_LINKER="$with_ld")
 196 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 197   if test ! -x "$DEFAULT_LINKER"; then
 198     AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 199   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 200     gnu_ld_flag=yes
 201   fi
 202   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 203         [Define to enable the use of a default linker.])
 204 fi
 205
 206 gnu_ld=`if test x"$gnu_ld_flag" = x"yes"; then echo 1; else echo 0; fi`
 207 AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld, [Define if using GNU ld.])
 208
 209 AC_MSG_CHECKING([whether a default linker was specified])
 210 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 211   if test x"$gnu_ld_flag" = x"no"; then
 212     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 213   else
 214     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 215   fi
 216 else
 217   AC_MSG_RESULT(no)
 218 fi
 219
 220 # With demangler in GNU ld
 221 AC_ARG_WITH(demangler-in-ld,
 222 [  --with-demangler-in-ld  try to use demangler in GNU ld.],
 223 demangler_in_ld="$with_demangler_in_ld",
 224 demangler_in_ld=no)
 225
 226 # ----------------------
 227 # Find default assembler
 228 # ----------------------
 229
 230 # With GNU as
 231 AC_ARG_WITH(gnu-as,
 232 [  --with-gnu-as           arrange to work with GNU as],
 233 gas_flag="$with_gnu_as",
 234 gas_flag=no)
 235
 236 AC_ARG_WITH(as,
 237 [  --with-as               arrange to use the specified as (full pathname)],
 238 DEFAULT_ASSEMBLER="$with_as")
 239 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 240   if test ! -x "$DEFAULT_ASSEMBLER"; then
 241     AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 242   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 243     gas_flag=yes
 244   fi
 245   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 246         [Define to enable the use of a default assembler.])
 247 fi
 248
 249 gnu_as=`if test x"$gas_flag" = x"yes"; then echo 1; else echo 0; fi`
 250 AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as, [Define if using GNU as.])
 251
 252 AC_MSG_CHECKING([whether a default assembler was specified])
 253 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 254   if test x"$gas_flag" = x"no"; then
 255     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 256   else
 257     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 258   fi
 259 else
 260   AC_MSG_RESULT(no)
 261 fi
 262
 263 # ---------------
 264 # Find C compiler
 265 # ---------------
 266
 267 # If a non-executable a.out is present (e.g. created by GNU as above even if
 268 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
 269 # file, even when creating an executable, so an execution test fails.
 270 # Remove possible default executable files to avoid this.
 271 #
 272 # FIXME: This really belongs into AC_PROG_CC and can be removed once
 273 # Autoconf includes it.
 274 rm -f a.out a.exe b.out
 275
 276 # Find the native compiler
 277 AC_PROG_CC
 278 AM_PROG_CC_C_O
 279 ACX_PROG_GNAT([-I"$srcdir"/ada])
 280
 281 # autoconf is lame and doesn't give us any substitution variable for this.
 282 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 283   NO_MINUS_C_MINUS_O=yes
 284 else
 285   OUTPUT_OPTION='-o $@'
 286 fi
 287 AC_SUBST(NO_MINUS_C_MINUS_O)
 288 AC_SUBST(OUTPUT_OPTION)
 289
 290 # Remove the -O2: for historical reasons, unless bootstrapping we prefer
 291 # optimizations to be activated explicitly by the toplevel.
 292 case "$CC" in
 293   */prev-gcc/xgcc*) ;;
 294   *) CFLAGS=`echo $CFLAGS | sed "s/-O[[s0-9]]* *//" ` ;;
 295 esac
 296 AC_SUBST(CFLAGS)
 297
 298 # -------------------------
 299 # Check C compiler features
 300 # -------------------------
 301
 302 AC_USE_SYSTEM_EXTENSIONS
 303 AC_PROG_CPP
 304 AC_C_INLINE
 305
 306 # sizeof(char) is 1 by definition.
 307 AC_CHECK_SIZEOF(void *)
 308 AC_CHECK_SIZEOF(short)
 309 AC_CHECK_SIZEOF(int)
 310 AC_CHECK_SIZEOF(long)
 311 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
 312 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
 313
 314 # ---------------------
 315 # Warnings and checking
 316 # ---------------------
 317
 318 # Check $CC warning features (if it's GCC).
 319 # We want to use -pedantic, but we don't want warnings about
 320 # * 'long long'
 321 # * variadic macros
 322 # * overlong strings
 323 # So, we only use -pedantic if we can disable those warnings.
 324
 325 ACX_PROG_CC_WARNING_OPTS(
 326         m4_quote(m4_do([-W -Wall -Wwrite-strings -Wstrict-prototypes ],
 327                        [-Wmissing-prototypes -Wcast-qual])), [loose_warn])
 328 ACX_PROG_CC_WARNING_OPTS(
 329         m4_quote(m4_do([-Wold-style-definition -Wc++-compat ],
 330                        [-Wmissing-format-attribute])), [strict_warn])
 331 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
 332         m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
 333                        [-Wno-overlength-strings])), [strict_warn])
 334 ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [strict_warn])
 335
 336 # The above macros do nothing if the compiler is not GCC.  However, the
 337 # Makefile has more goo to add other flags, so this variabl is used to
 338 # enables warnings only for GCC.
 339 warn_cflags=
 340 if test "x$GCC" = "xyes"; then
 341   warn_cflags='$(GCC_WARN_CFLAGS)'
 342 fi
 343 AC_SUBST(warn_cflags)
 344
 345 # Enable expensive internal checks
 346 is_release=
 347 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
 348   is_release=yes
 349 fi
 350
 351 AC_ARG_ENABLE(checking,
 352 [  --enable-checking[=LIST]
 353                           enable expensive run-time checks.  With LIST,
 354                           enable only specific categories of checks.
 355                           Categories are: yes,no,all,none,release.
 356                           Flags are: assert,df,fold,gc,gcac,gimple,misc,
 357                           rtlflag,rtl,runtime,tree,valgrind,types.],
 358 [ac_checking_flags="${enableval}"],[
 359 # Determine the default checks.
 360 if test x$is_release = x ; then
 361   ac_checking_flags=yes
 362 else
 363   ac_checking_flags=release
 364 fi])
 365 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 366 for check in release $ac_checking_flags
 367 do
 368         case $check in
 369         # these set all the flags to specific states
 370         yes)            ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ;
 371                         ac_fold_checking= ; ac_gc_checking=1 ;
 372                         ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ;
 373                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 374                         ac_tree_checking=1 ; ac_valgrind_checking= ;
 375                         ac_types_checking=1 ;;
 376         no|none)        ac_assert_checking= ; ac_checking= ; ac_df_checking= ;
 377                         ac_fold_checking= ; ac_gc_checking= ;
 378                         ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
 379                         ac_rtlflag_checking= ; ac_runtime_checking= ;
 380                         ac_tree_checking= ; ac_valgrind_checking= ;
 381                         ac_types_checking= ;;
 382         all)            ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ;
 383                         ac_fold_checking=1 ; ac_gc_checking=1 ;
 384                         ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ;
 385                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 386                         ac_tree_checking=1 ; ac_valgrind_checking= ;
 387                         ac_types_checking=1 ;;
 388         release)        ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ;
 389                         ac_fold_checking= ; ac_gc_checking= ;
 390                         ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ;
 391                         ac_rtlflag_checking= ; ac_runtime_checking=1 ;
 392                         ac_tree_checking= ; ac_valgrind_checking= ;
 393                         ac_types_checking= ;;
 394         # these enable particular checks
 395         assert)         ac_assert_checking=1 ;;
 396         df)             ac_df_checking=1 ;;
 397         fold)           ac_fold_checking=1 ;;
 398         gc)             ac_gc_checking=1 ;;
 399         gcac)           ac_gc_always_collect=1 ;;
 400         gimple)         ac_gimple_checking=1 ;;
 401         misc)           ac_checking=1 ;;
 402         rtl)            ac_rtl_checking=1 ;;
 403         rtlflag)        ac_rtlflag_checking=1 ;;
 404         runtime)        ac_runtime_checking=1 ;;
 405         tree)           ac_tree_checking=1 ;;
 406         types)          ac_types_checking=1 ;;
 407         valgrind)       ac_valgrind_checking=1 ;;
 408         *)      AC_MSG_ERROR(unknown check category $check) ;;
 409         esac
 410 done
 411 IFS="$ac_save_IFS"
 412
 413 nocommon_flag=""
 414 if test x$ac_checking != x ; then
 415   AC_DEFINE(ENABLE_CHECKING, 1,
 416 [Define if you want more run-time sanity checks.  This one gets a grab
 417    bag of miscellaneous but relatively cheap checks.])
 418   nocommon_flag=-fno-common
 419 fi
 420 AC_SUBST(nocommon_flag)
 421 if test x$ac_df_checking != x ; then
 422   AC_DEFINE(ENABLE_DF_CHECKING, 1,
 423 [Define if you want more run-time sanity checks for dataflow.])
 424 fi
 425 if test x$ac_assert_checking != x ; then
 426   AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
 427 [Define if you want assertions enabled.  This is a cheap check.])
 428 fi
 429 if test x$ac_gimple_checking != x ; then
 430   AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1,
 431 [Define if you want operations on GIMPLE (the basic data structure of
 432 the high-level optimizers) to be checked for dynamic type safety at
 433 runtime.  This is moderately expensive.])
 434 fi
 435 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
 436 if test x$ac_runtime_checking != x ; then
 437   AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
 438 [Define if you want runtime assertions enabled.  This is a cheap check.])
 439 fi
 440 if test x$ac_tree_checking != x ; then
 441   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 442 [Define if you want all operations on trees (the basic data
 443    structure of the front ends) to be checked for dynamic type safety
 444    at runtime.  This is moderately expensive.  The tree browser debugging
 445    routines will also be enabled by this option.
 446    ])
 447   TREEBROWSER=tree-browser.o
 448 fi
 449 if test x$ac_types_checking != x ; then
 450   AC_DEFINE(ENABLE_TYPES_CHECKING, 1,
 451 [Define if you want all gimple types to be verified after gimplifiation.
 452    This is cheap.
 453    ])
 454 fi
 455 AC_SUBST(TREEBROWSER)
 456 if test x$ac_rtl_checking != x ; then
 457   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 458 [Define if you want all operations on RTL (the basic data structure
 459    of the optimizer and back end) to be checked for dynamic type safety
 460    at runtime.  This is quite expensive.])
 461 fi
 462 if test x$ac_rtlflag_checking != x ; then
 463   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 464 [Define if you want RTL flag accesses to be checked against the RTL
 465    codes that are supported for each access macro.  This is relatively
 466    cheap.])
 467 fi
 468 if test x$ac_gc_checking != x ; then
 469   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 470 [Define if you want the garbage collector to do object poisoning and
 471    other memory allocation checks.  This is quite expensive.])
 472 fi
 473 if test x$ac_gc_always_collect != x ; then
 474   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 475 [Define if you want the garbage collector to operate in maximally
 476    paranoid mode, validating the entire heap and collecting garbage at
 477    every opportunity.  This is extremely expensive.])
 478 fi
 479 if test x$ac_fold_checking != x ; then
 480   AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
 481 [Define if you want fold checked that it never destructs its argument.
 482    This is quite expensive.])
 483 fi
 484 valgrind_path_defines=
 485 valgrind_command=
 486
 487 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
 488 dnl # an if statement.  This was the source of very frustrating bugs
 489 dnl # in converting to autoconf 2.5x!
 490 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 491
 492 if test x$ac_valgrind_checking != x ; then
 493   # It is certainly possible that there's valgrind but no valgrind.h.
 494   # GCC relies on making annotations so we must have both.
 495   AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
 496   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 497     [[#include <valgrind/memcheck.h>
 498 #ifndef VALGRIND_DISCARD
 499 #error VALGRIND_DISCARD not defined
 500 #endif]])],
 501   [gcc_cv_header_valgrind_memcheck_h=yes],
 502   [gcc_cv_header_valgrind_memcheck_h=no])
 503   AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
 504   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 505   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 506     [[#include <memcheck.h>
 507 #ifndef VALGRIND_DISCARD
 508 #error VALGRIND_DISCARD not defined
 509 #endif]])],
 510   [gcc_cv_header_memcheck_h=yes],
 511   [gcc_cv_header_memcheck_h=no])
 512   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 513   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 514         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 515   if test "x$valgrind_path" = "x" \
 516     || (test $have_valgrind_h = no \
 517         && test $gcc_cv_header_memcheck_h = no \
 518         && test $gcc_cv_header_valgrind_memcheck_h = no); then
 519         AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
 520   fi
 521   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 522   valgrind_command="$valgrind_path -q"
 523   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 524 [Define if you want to run subprograms and generated programs
 525    through valgrind (a memory checker).  This is extremely expensive.])
 526   if test $gcc_cv_header_valgrind_memcheck_h = yes; then
 527     AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
 528         [Define if valgrind's valgrind/memcheck.h header is installed.])
 529   fi
 530   if test $gcc_cv_header_memcheck_h = yes; then
 531     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 532         [Define if valgrind's memcheck.h header is installed.])
 533   fi
 534 fi
 535 AC_SUBST(valgrind_path_defines)
 536 AC_SUBST(valgrind_command)
 537
 538 # Enable code coverage collection
 539 AC_ARG_ENABLE(coverage,
 540 [  --enable-coverage[=LEVEL]
 541                           enable compiler's code coverage collection.
 542                           Use to measure compiler performance and locate
 543                           unused parts of the compiler. With LEVEL, specify
 544                           optimization. Values are opt, noopt,
 545                           default is noopt],
 546 [case "${enableval}" in
 547   yes|noopt)
 548     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
 549     ;;
 550   opt)
 551     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
 552     ;;
 553   no)
 554     # a.k.a. --disable-coverage
 555     coverage_flags=""
 556     ;;
 557   *)
 558     AC_MSG_ERROR(unknown coverage setting $enableval)
 559     ;;
 560 esac],
 561 [coverage_flags=""])
 562 AC_SUBST(coverage_flags)
 563
 564 AC_ARG_ENABLE(gather-detailed-mem-stats,
 565 [  --enable-gather-detailed-mem-stats         enable detailed memory allocation stats gathering], [],
 566 [enable_gather_detailed_mem_stats=no])
 567 if test x$enable_gather_detailed_mem_stats = xyes ; then
 568   AC_DEFINE(GATHER_STATISTICS, 1,
 569         [Define to enable detailed memory allocation stats gathering.])
 570 fi
 571
 572 # -------------------------------
 573 # Miscenalleous configure options
 574 # -------------------------------
 575
 576 # With stabs
 577 AC_ARG_WITH(stabs,
 578 [  --with-stabs            arrange to use stabs instead of host debug format],
 579 stabs="$with_stabs",
 580 stabs=no)
 581
 582 # Determine whether or not multilibs are enabled.
 583 AC_ARG_ENABLE(multilib,
 584 [  --enable-multilib       enable library support for multiple ABIs],
 585 [], [enable_multilib=yes])
 586 AC_SUBST(enable_multilib)
 587
 588 # Enable __cxa_atexit for C++.
 589 AC_ARG_ENABLE(__cxa_atexit,
 590 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 591 [], [])
 592
 593 # Enable C extension for decimal float if target supports it.
 594 AC_ARG_ENABLE(decimal-float,
 595 [  --enable-decimal-float={no,yes,bid,dpd}
 596                         enable decimal float extension to C.  Selecting 'bid'
 597                         or 'dpd' choses which decimal floating point format
 598                         to use],
 599 [
 600   case $enable_decimal_float in
 601     yes | no | bid | dpd) ;;
 602     *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
 603 Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
 604   esac
 605 ],
 606 [
 607   case $target in
 608     powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
 609       enable_decimal_float=yes
 610       ;;
 611     *)
 612       AC_MSG_WARN(decimal float is not supported for this target, ignored)
 613       enable_decimal_float=no
 614       ;;
 615   esac
 616 ])
 617
 618 dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi`
 619 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp,
 620 [Define to 1 to enable decimal float extension to C.])
 621
 622 # x86's use BID format instead of DPD
 623 case x$enable_decimal_float in
 624   xyes)
 625     case $target in
 626       i?86*-*-linux* | x86_64*-*-linux*)
 627         enable_decimal_float=bid
 628         ;;
 629       *)
 630         enable_decimal_float=dpd
 631         ;;
 632     esac
 633     ;;
 634   xno)
 635     # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
 636     # dependency on libdecnumber.
 637     enable_decimal_float=dpd
 638     ;;
 639 esac
 640 AC_SUBST(enable_decimal_float)
 641
 642 bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi`
 643 AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid,
 644 [Define to 1 to specify that we are using the BID decimal floating
 645 point format instead of DPD])
 646
 647 # Enable C extension for fixed-point arithmetic.
 648 AC_ARG_ENABLE(fixed-point,
 649 [  --enable-fixed-point    enable fixed-point arithmetic extension to C],
 650 [
 651 ],
 652 [
 653   case $target in
 654     mips*-*-*)
 655       case $host in
 656         mips*-sgi-irix*)
 657           AC_MSG_WARN(fixed-point is not supported on IRIX, ignored)
 658           enable_fixed_point=no
 659           ;;
 660         *)
 661           enable_fixed_point=yes
 662           ;;
 663       esac
 664       ;;
 665     *)
 666       AC_MSG_WARN(fixed-point is not supported for this target, ignored)
 667       enable_fixed_point=no
 668       ;;
 669   esac
 670 ])
 671 AC_SUBST(enable_fixed_point)
 672
 673 fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi`
 674 AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint,
 675 [Define to 1 to enable fixed-point arithmetic extension to C.])
 676
 677 # Enable threads
 678 # Pass with no value to take the default
 679 # Pass with a value to specify a thread package
 680 AC_ARG_ENABLE(threads,
 681 [  --enable-threads        enable thread usage for target GCC
 682   --enable-threads=LIB    use LIB thread package for target GCC],,
 683 [enable_threads=''])
 684
 685 AC_ARG_ENABLE(tls,
 686 [  --enable-tls            enable or disable generation of tls code
 687                           overriding the assembler check for tls support],
 688 [
 689   case $enable_tls in
 690     yes | no) ;;
 691     *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls.
 692 Valid choices are 'yes' and 'no'.]) ;;
 693   esac
 694 ], [enable_tls=''])
 695
 696 AC_ARG_ENABLE(objc-gc,
 697 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 698                           the GNU Objective-C runtime],
 699 if test x$enable_objc_gc = xno; then
 700         objc_boehm_gc=''
 701 else
 702         objc_boehm_gc=1
 703 fi,
 704 objc_boehm_gc='')
 705
 706 AC_ARG_WITH(dwarf2,
 707 [  --with-dwarf2           force the default debug format to be DWARF 2],
 708 dwarf2="$with_dwarf2",
 709 dwarf2=no)
 710
 711 AC_ARG_ENABLE(shared,
 712 [  --disable-shared        don't provide a shared libgcc],
 713 [
 714   case $enable_shared in
 715   yes | no) ;;
 716   *)
 717     enable_shared=no
 718     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 719     for pkg in $enableval; do
 720       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 721         enable_shared=yes
 722       fi
 723     done
 724     IFS="$ac_save_ifs"
 725     ;;
 726   esac
 727 ], [enable_shared=yes])
 728 AC_SUBST(enable_shared)
 729
 730 AC_ARG_WITH(build-sysroot,
 731   [  --with-build-sysroot=sysroot
 732                           use sysroot as the system root during the build])
 733
 734 AC_ARG_WITH(sysroot,
 735 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 736 [
 737  case ${with_sysroot} in
 738  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
 739  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 740  esac
 741
 742  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 743  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
 744
 745  if test "x$prefix" = xNONE; then
 746   test_prefix=/usr/local
 747  else
 748   test_prefix=$prefix
 749  fi
 750  if test "x$exec_prefix" = xNONE; then
 751   test_exec_prefix=$test_prefix
 752  else
 753   test_exec_prefix=$exec_prefix
 754  fi
 755  case ${TARGET_SYSTEM_ROOT} in
 756  "${test_prefix}"|"${test_prefix}/"*|\
 757  "${test_exec_prefix}"|"${test_exec_prefix}/"*|\
 758  '${prefix}'|'${prefix}/'*|\
 759  '${exec_prefix}'|'${exec_prefix}/'*)
 760    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 761    TARGET_SYSTEM_ROOT_DEFINE="$t"
 762    ;;
 763  esac
 764 ], [
 765  TARGET_SYSTEM_ROOT=
 766  TARGET_SYSTEM_ROOT_DEFINE=
 767  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 768 ])
 769 AC_SUBST(TARGET_SYSTEM_ROOT)
 770 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 771 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 772
 773 # Build with intermodule optimisations
 774 AC_ARG_ENABLE(intermodule,
 775 [  --enable-intermodule    build the compiler in one step],
 776 [case ${enable_intermodule} in
 777   yes) onestep="-onestep";;
 778   *) onestep="";;
 779 esac],
 780 [onestep=""])
 781 AC_SUBST(onestep)
 782
 783 ACX_PKGVERSION([GCC])
 784 ACX_BUGURL([http://gcc.gnu.org/bugs.html])
 785
 786 # Sanity check enable_languages in case someone does not run the toplevel
 787 # configure # script.
 788 AC_ARG_ENABLE(languages,
 789 [  --enable-languages=LIST specify which front-ends to build],
 790 [case ,${enable_languages}, in
 791        ,,|,yes,)
 792                 # go safe -- we cannot be much sure without the toplevel
 793                 # configure's
 794                 # analysis of which target libs are present and usable
 795                 enable_languages=c
 796                 ;;
 797          *,all,*)
 798                 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
 799                 ;;
 800         *,c,*)
 801                 ;;
 802         *)
 803                 enable_languages=c,${enable_languages}
 804                 ;;
 805 esac],
 806 [enable_languages=c])
 807
 808 # Used by documentation targets
 809 AC_SUBST(datarootdir)
 810 AC_SUBST(docdir)
 811 AC_SUBST(htmldir)
 812
 813 # -------------------------
 814 # Checks for other programs
 815 # -------------------------
 816
 817 AC_PROG_MAKE_SET
 818
 819 # Find some useful tools
 820 AC_PROG_AWK
 821 # We need awk to create options.c and options.h.
 822 # Bail out if it's missing.
 823 case ${AWK} in
 824   "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
 825 esac
 826
 827 gcc_AC_PROG_LN_S
 828 ACX_PROG_LN($LN_S)
 829 AC_PROG_RANLIB
 830 case "${host}" in
 831 *-*-darwin*)
 832   # By default, the Darwin ranlib will not treat common symbols as
 833   # definitions when  building the archive table of contents.  Other
 834   # ranlibs do that; pass an option to the Darwin ranlib that makes
 835   # it behave similarly.
 836   ranlib_flags="-c"
 837   ;;
 838 *)
 839   ranlib_flags=""
 840 esac
 841 AC_SUBST(ranlib_flags)
 842
 843 gcc_AC_PROG_INSTALL
 844
 845 # See if cmp has --ignore-initial.
 846 gcc_AC_PROG_CMP_IGNORE_INITIAL
 847
 848 # See if we have the mktemp command.
 849 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 850
 851 # See if makeinfo has been installed and is modern enough
 852 # that we can use it.
 853 ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 854   [GNU texinfo.* \([0-9][0-9.]*\)],
 855   [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
 856 if test $gcc_cv_prog_makeinfo_modern = no; then
 857   AC_MSG_WARN([
 858 *** Makeinfo is missing or too old.
 859 *** Info documentation will not be built.])
 860   BUILD_INFO=
 861 else
 862   BUILD_INFO=info
 863 fi
 864 AC_SUBST(BUILD_INFO)
 865
 866 # Is pod2man recent enough to regenerate manpages?
 867 AC_MSG_CHECKING([for recent Pod::Man])
 868 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 869   AC_MSG_RESULT(yes)
 870   GENERATED_MANPAGES=generated-manpages
 871 else
 872   AC_MSG_RESULT(no)
 873   GENERATED_MANPAGES=
 874 fi
 875 AC_SUBST(GENERATED_MANPAGES)
 876
 877 MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing"
 878
 879 # How about lex?
 880 dnl Don't use AC_PROG_LEX; we insist on flex.
 881 dnl LEXLIB is not useful in gcc.
 882 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
 883
 884 # Bison?
 885 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
 886
 887 # Binutils are not build modules, unlike bison/flex/makeinfo.  So we
 888 # check for build == host before using them.
 889
 890 # NM
 891 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
 892   && test -d ../binutils ; then
 893   NM='$(objdir)/../binutils/nm-new'
 894 else
 895   AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
 896 fi
 897
 898 # AR
 899 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
 900   && test -d ../binutils ; then
 901   AR='$(objdir)/../binutils/ar'
 902 else
 903   AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
 904 fi
 905
 906
 907 # --------------------
 908 # Checks for C headers
 909 # --------------------
 910
 911 # Need to reject headers which give warnings, so that the -Werror bootstrap
 912 # works later. *sigh*  This needs to come before all header checks.
 913 AC_PROG_CPP_WERROR
 914
 915 AC_HEADER_STDC
 916 AC_HEADER_TIME
 917 ACX_HEADER_STRING
 918 AC_HEADER_SYS_WAIT
 919 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
 920                  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 921                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 922                  direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
 923
 924 # Check for thread headers.
 925 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 926 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 927
 928 # These tests can't be done till we know if we have limits.h.
 929 gcc_AC_C_CHAR_BIT
 930 AC_C_BIGENDIAN
 931
 932 # --------
 933 # UNSORTED
 934 # --------
 935
 936
 937 # These libraries may be used by collect2.
 938 # We may need a special search path to get them linked.
 939 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 940 [save_LIBS="$LIBS"
 941 for libs in '' -lld -lmld \
 942                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
 943                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
 944 do
 945         LIBS="$libs"
 946         AC_TRY_LINK_FUNC(ldopen,
 947                 [gcc_cv_collect2_libs="$libs"; break])
 948 done
 949 LIBS="$save_LIBS"
 950 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
 951 case $gcc_cv_collect2_libs in
 952         "none required")        ;;
 953         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
 954 esac
 955 AC_SUBST(COLLECT2_LIBS)
 956
 957 # When building Ada code on Alpha, we need exc_resume which is usually in
 958 # -lexc.  So test for it.
 959 save_LIBS="$LIBS"
 960 LIBS=
 961 AC_SEARCH_LIBS(exc_resume, exc)
 962 GNAT_LIBEXC="$LIBS"
 963 LIBS="$save_LIBS"
 964 AC_SUBST(GNAT_LIBEXC)
 965
 966 # Some systems put ldexp and frexp in libm instead of libc; assume
 967 # they're both in the same place.  jcf-dump needs them.
 968 save_LIBS="$LIBS"
 969 LIBS=
 970 AC_SEARCH_LIBS(ldexp, m)
 971 LDEXP_LIB="$LIBS"
 972 LIBS="$save_LIBS"
 973 AC_SUBST(LDEXP_LIB)
 974
 975 # Use <inttypes.h> only if it exists,
 976 # doesn't clash with <sys/types.h>, and declares intmax_t.
 977 AC_MSG_CHECKING(for inttypes.h)
 978 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 979 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 980 [[#include <sys/types.h>
 981 #include <inttypes.h>]],
 982   [[intmax_t i = -1;]])],
 983   [gcc_cv_header_inttypes_h=yes],
 984   [gcc_cv_header_inttypes_h=no])])
 985 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 986 if test $gcc_cv_header_inttypes_h = yes; then
 987   AC_DEFINE(HAVE_INTTYPES_H, 1,
 988         [Define if you have a working <inttypes.h> header file.])
 989 fi
 990
 991 dnl Disabled until we have a complete test for buggy enum bitfields.
 992 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 993
 994 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
 995   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
 996   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
 997   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
 998   putchar_unlocked putc_unlocked)
 999 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1000         sysconf strsignal getrusage nl_langinfo \
1001         gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1002         gcc_UNLOCKED_FUNCS)
1003
1004 if test x$ac_cv_func_mbstowcs = xyes; then
1005   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1006 [    AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1007 int main()
1008 {
1009   mbstowcs(0, "", 0);
1010   return 0;
1011 }]])],
1012     [gcc_cv_func_mbstowcs_works=yes],
1013     [gcc_cv_func_mbstowcs_works=no],
1014     [gcc_cv_func_mbstowcs_works=yes])])
1015   if test x$gcc_cv_func_mbstowcs_works = xyes; then
1016     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1017   [Define this macro if mbstowcs does not crash when its
1018    first argument is NULL.])
1019   fi
1020 fi
1021
1022 AC_CHECK_TYPE(ssize_t, int)
1023 AC_CHECK_TYPE(caddr_t, char *)
1024
1025 # Try to determine the array type of the second argument of getgroups
1026 # for the target system (int or gid_t).
1027 AC_TYPE_GETGROUPS
1028 if test "${target}" = "${build}"; then
1029   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1030 else
1031   case "${target}" in
1032         # This condition may need some tweaking.  It should include all
1033         # targets where the array type of the second argument of getgroups
1034         # is int and the type of gid_t is not equivalent to int.
1035         *-*-sunos* | *-*-ultrix*)
1036                 TARGET_GETGROUPS_T=int
1037                 ;;
1038         *)
1039                 TARGET_GETGROUPS_T=gid_t
1040                 ;;
1041   esac
1042 fi
1043 AC_SUBST(TARGET_GETGROUPS_T)
1044
1045 gcc_AC_FUNC_MMAP_BLACKLIST
1046
1047 case "${host}" in
1048 *-*-*vms*)
1049   # Under VMS, vfork works very differently than on Unix. The standard test
1050   # won't work, and it isn't easily adaptable. It makes more sense to
1051   # just force it.
1052   ac_cv_func_vfork_works=yes
1053   ;;
1054 esac
1055 AC_FUNC_FORK
1056
1057 AM_ICONV
1058 # Until we have in-tree GNU iconv:
1059 LIBICONV_DEP=
1060 AC_SUBST(LIBICONV_DEP)
1061
1062 AM_LC_MESSAGES
1063
1064 AM_LANGINFO_CODESET
1065
1066 # We will need to find libiberty.h and ansidecl.h
1067 saved_CFLAGS="$CFLAGS"
1068 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1069 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1070         strsignal strstr strverscmp \
1071         errno snprintf vsnprintf vasprintf malloc realloc calloc \
1072         free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1073 #include "ansidecl.h"
1074 #include "system.h"])
1075
1076 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1077 #include "ansidecl.h"
1078 #include "system.h"
1079 #ifdef HAVE_SYS_RESOURCE_H
1080 #include <sys/resource.h>
1081 #endif
1082 ])
1083
1084 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1085 #include "ansidecl.h"
1086 #include "system.h"
1087 #ifdef HAVE_SYS_RESOURCE_H
1088 #include <sys/resource.h>
1089 #endif
1090 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1091 [Define to `long' if <sys/resource.h> doesn't define.])])
1092
1093 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1094 # FREAD and FWRITE macros.  Fortunately, for GCC's single usage of ldgetname
1095 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1096 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1097 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1098 #include "ansidecl.h"
1099 #include "system.h"
1100 #ifdef HAVE_LDFCN_H
1101 #undef FREAD
1102 #undef FWRITE
1103 #include <ldfcn.h>
1104 #endif
1105 ])
1106
1107 gcc_AC_CHECK_DECLS(times, , ,[
1108 #include "ansidecl.h"
1109 #include "system.h"
1110 #ifdef HAVE_SYS_TIMES_H
1111 #include <sys/times.h>
1112 #endif
1113 ])
1114
1115 gcc_AC_CHECK_DECLS(sigaltstack, , ,[
1116 #include "ansidecl.h"
1117 #include "system.h"
1118 #include <signal.h>
1119 ])
1120
1121 # More time-related stuff.
1122 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1123 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1124 #include "ansidecl.h"
1125 #include "system.h"
1126 #ifdef HAVE_SYS_TIMES_H
1127 #include <sys/times.h>
1128 #endif
1129 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1130 if test $ac_cv_struct_tms = yes; then
1131   AC_DEFINE(HAVE_STRUCT_TMS, 1,
1132   [Define if <sys/times.h> defines struct tms.])
1133 fi
1134
1135 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1136 # revisit after autoconf 2.50.
1137 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1138 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1139 #include "ansidecl.h"
1140 #include "system.h"
1141 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1142 if test $gcc_cv_type_clock_t = yes; then
1143   AC_DEFINE(HAVE_CLOCK_T, 1,
1144   [Define if <time.h> defines clock_t.])
1145 fi
1146
1147 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1148 CFLAGS="$saved_CFLAGS"
1149
1150 gcc_AC_INITFINI_ARRAY
1151
1152 # mkdir takes a single argument on some systems.
1153 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1154
1155 # File extensions
1156 manext='.1'
1157 objext='.o'
1158 AC_SUBST(manext)
1159 AC_SUBST(objext)
1160
1161 # With Setjmp/Longjmp based exception handling.
1162 AC_ARG_ENABLE(sjlj-exceptions,
1163 [  --enable-sjlj-exceptions
1164                           arrange to use setjmp/longjmp exception handling],
1165 [case $target in
1166   *-*-hpux10*)
1167     if test $enableval != yes; then
1168       AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced])
1169       enableval=yes
1170     fi
1171     ;;
1172 esac
1173 force_sjlj_exceptions=yes],
1174 [case $target in
1175   *-*-hpux10*)
1176     force_sjlj_exceptions=yes
1177     enableval=yes
1178     ;;
1179   *)
1180     force_sjlj_exceptions=no
1181     ;;
1182 esac])
1183 if test $force_sjlj_exceptions = yes; then
1184   sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1185   AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1186     [Define 0/1 to force the choice for exception handling model.])
1187 fi
1188
1189 # For platforms with the unwind ABI which includes an unwind library,
1190 # libunwind, we can choose to use the system libunwind.
1191 # config.gcc also contains tests of with_system_libunwind.
1192 GCC_CHECK_UNWIND_GETIPINFO
1193
1194 # --------------------------------------------------------
1195 # Build, host, and target specific configuration fragments
1196 # --------------------------------------------------------
1197
1198 # Collect build-machine-specific information.
1199 . ${srcdir}/config.build
1200
1201 # Collect host-machine-specific information.
1202 . ${srcdir}/config.host
1203
1204 target_gtfiles=
1205
1206 # Collect target-machine-specific information.
1207 . ${srcdir}/config.gcc
1208
1209 extra_objs="${host_extra_objs} ${extra_objs}"
1210 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1211
1212 # Default the target-machine variables that were not explicitly set.
1213 if test x"$tm_file" = x
1214 then tm_file=$cpu_type/$cpu_type.h; fi
1215
1216 if test x"$extra_headers" = x
1217 then extra_headers=; fi
1218
1219 if test x$md_file = x
1220 then md_file=$cpu_type/$cpu_type.md; fi
1221
1222 if test x$out_file = x
1223 then out_file=$cpu_type/$cpu_type.c; fi
1224
1225 if test x"$tmake_file" = x
1226 then tmake_file=$cpu_type/t-$cpu_type
1227 fi
1228
1229 if test x"$dwarf2" = xyes
1230 then tm_file="$tm_file tm-dwarf2.h"
1231 fi
1232
1233 # Say what files are being used for the output code and MD file.
1234 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1235 echo "Using \`$srcdir/config/$md_file' as machine description file."
1236
1237 # If any of the xm_file variables contain nonexistent files, warn
1238 # about them and drop them.
1239
1240 bx=
1241 for x in $build_xm_file; do
1242   if    test -f $srcdir/config/$x
1243   then      bx="$bx $x"
1244   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1245   fi
1246 done
1247 build_xm_file="$bx"
1248
1249 hx=
1250 for x in $host_xm_file; do
1251   if    test -f $srcdir/config/$x
1252   then      hx="$hx $x"
1253   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1254   fi
1255 done
1256 host_xm_file="$hx"
1257
1258 tx=
1259 for x in $xm_file; do
1260   if    test -f $srcdir/config/$x
1261   then      tx="$tx $x"
1262   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1263   fi
1264 done
1265 xm_file="$tx"
1266
1267 count=a
1268 for f in $tm_file; do
1269         count=${count}x
1270 done
1271 if test $count = ax; then
1272         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1273 else
1274         echo "Using the following target machine macro files:"
1275         for f in $tm_file; do
1276                 echo "  $srcdir/config/$f"
1277         done
1278 fi
1279
1280 if test x$need_64bit_hwint = xyes; then
1281         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1282 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1283 fi
1284
1285 if test x$use_long_long_for_widest_fast_int = xyes; then
1286         AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1287 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1288 efficiently supported by the host hardware.])
1289 fi
1290
1291 count=a
1292 for f in $host_xm_file; do
1293         count=${count}x
1294 done
1295 if test $count = a; then
1296         :
1297 elif test $count = ax; then
1298         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1299 else
1300         echo "Using the following host machine macro files:"
1301         for f in $host_xm_file; do
1302                 echo "  $srcdir/config/$f"
1303         done
1304 fi
1305 echo "Using ${out_host_hook_obj} for host machine hooks."
1306
1307 if test "$host_xm_file" != "$build_xm_file"; then
1308         count=a
1309         for f in $build_xm_file; do
1310                 count=${count}x
1311         done
1312         if test $count = a; then
1313                 :
1314         elif test $count = ax; then
1315                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1316         else
1317                 echo "Using the following build machine macro files:"
1318                 for f in $build_xm_file; do
1319                         echo "  $srcdir/config/$f"
1320                 done
1321         fi
1322 fi
1323
1324 case ${host} in
1325   powerpc*-*-darwin*)
1326     AC_CACHE_CHECK([whether mcontext_t fields have underscores],
1327       gcc_cv_mcontext_underscores,
1328       AC_COMPILE_IFELSE([
1329 #include <sys/cdefs.h>
1330 #include <sys/signal.h>
1331 #include <ucontext.h>
1332 int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; }
1333 ],
1334         gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes))
1335       if test $gcc_cv_mcontext_underscores = yes; then
1336         AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl
1337           [mcontext_t fields start with __])
1338       fi
1339     ;;
1340 esac
1341
1342 # ---------
1343 # Threading
1344 # ---------
1345
1346 # Check if a valid thread package
1347 case ${enable_threads} in
1348   "" | no)
1349     # No threads
1350     target_thread_file='single'
1351     ;;
1352   yes)
1353     # default
1354     target_thread_file='single'
1355     ;;
1356   aix | dce | gnat | irix | posix | posix95 | rtems | \
1357   single | solaris | vxworks | win32 | mipssde)
1358     target_thread_file=${enable_threads}
1359     ;;
1360   *)
1361     echo "${enable_threads} is an unknown thread package" 1>&2
1362     exit 1
1363     ;;
1364 esac
1365
1366 if test x${thread_file} = x; then
1367   # No thread file set by target-specific clauses in config.gcc,
1368   # so use file chosen by default logic above
1369   thread_file=${target_thread_file}
1370 fi
1371
1372 # Make gthr-default.h if we have a thread file.
1373 gthread_flags=
1374 if test $thread_file != single; then
1375   echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h-t
1376   if diff gthr-default.h-t gthr-default.h 2>/dev/null; then
1377     rm -f gthr-default.h-t
1378   else
1379     mv -f gthr-default.h-t gthr-default.h
1380   fi
1381   gthread_flags=-DHAVE_GTHR_DEFAULT
1382 fi
1383 AC_SUBST(gthread_flags)
1384
1385 # --------
1386 # UNSORTED
1387 # --------
1388
1389 use_cxa_atexit=no
1390 if test x$enable___cxa_atexit = xyes || \
1391    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1392   if test x$host = x$target; then
1393     case $host in
1394       # mingw32 doesn't have __cxa_atexit but uses atexit registration
1395       # keyed to flag_use_cxa_atexit
1396       *-*-mingw32*)
1397         use_cxa_atexit=yes
1398         ;;
1399       *)
1400         AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1401           [echo "__cxa_atexit can't be enabled on this target"])
1402         ;;
1403     esac
1404   else
1405     # We can't check for __cxa_atexit when building a cross, so assume
1406     # it is available
1407     use_cxa_atexit=yes
1408   fi
1409   if test x$use_cxa_atexit = xyes; then
1410     AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2,
1411       [Define if you want to use __cxa_atexit, rather than atexit, to
1412       register C++ destructors for local statics and global objects.
1413       This is essential for fully standards-compliant handling of
1414       destructors, but requires __cxa_atexit in libc.])
1415   fi
1416 fi
1417
1418 # Look for a file containing extra machine modes.
1419 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1420   extra_modes_file='$(srcdir)'/config/${extra_modes}
1421   AC_SUBST(extra_modes_file)
1422   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1423   [Define to the name of a file containing a list of extra machine modes
1424    for this architecture.])
1425 fi
1426
1427 # Convert extra_options into a form suitable for Makefile use.
1428 extra_opt_files=
1429 for f in $extra_options; do
1430   extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1431 done
1432 AC_SUBST(extra_opt_files)
1433
1434 # auto-host.h is the file containing items generated by autoconf and is
1435 # the first file included by config.h.
1436 # If host=build, it is correct to have bconfig include auto-host.h
1437 # as well.  If host!=build, we are in error and need to do more
1438 # work to find out the build config parameters.
1439 if test x$host = x$build
1440 then
1441         build_auto=auto-host.h
1442 else
1443         # We create a subdir, then run autoconf in the subdir.
1444         # To prevent recursion we set host and build for the new
1445         # invocation of configure to the build for this invocation
1446         # of configure.
1447         tempdir=build.$$
1448         rm -rf $tempdir
1449         mkdir $tempdir
1450         cd $tempdir
1451         case ${srcdir} in
1452         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1453         *) realsrcdir=../${srcdir};;
1454         esac
1455         saved_CFLAGS="${CFLAGS}"
1456         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1457         LDFLAGS="${LDFLAGS_FOR_BUILD}" \
1458         ${realsrcdir}/configure \
1459                 --enable-languages=${enable_languages-all} \
1460                 --target=$target_alias --host=$build_alias --build=$build_alias
1461         CFLAGS="${saved_CFLAGS}"
1462
1463         # We just finished tests for the build machine, so rename
1464         # the file auto-build.h in the gcc directory.
1465         mv auto-host.h ../auto-build.h
1466         cd ..
1467         rm -rf $tempdir
1468         build_auto=auto-build.h
1469 fi
1470 AC_SUBST(build_subdir)
1471
1472 tm_file="${tm_file} defaults.h"
1473 tm_p_file="${tm_p_file} tm-preds.h"
1474 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1475 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1476 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1477 # put this back in temporarily.
1478 xm_file="auto-host.h ansidecl.h ${xm_file}"
1479
1480 # --------
1481 # UNSORTED
1482 # --------
1483
1484 changequote(,)dnl
1485 # Compile in configure arguments.
1486 if test -f configargs.h ; then
1487         # Being re-configured.
1488         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1489         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1490 else
1491         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1492 fi
1493
1494 # Double all backslashes and backslash all quotes to turn
1495 # gcc_config_arguments into a C string.
1496 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1497 $gcc_config_arguments
1498 EOF
1499 gcc_config_arguments_str=`cat conftest.out`
1500 rm -f conftest.out
1501
1502 cat > configargs.h <<EOF
1503 /* Generated automatically. */
1504 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1505 static const char thread_model[] = "$thread_file";
1506
1507 static const struct {
1508   const char *name, *value;
1509 } configure_default_options[] = $configure_default_options;
1510 EOF
1511 changequote([,])dnl
1512
1513 # Internationalization
1514 ZW_GNU_GETTEXT_SISTER_DIR
1515
1516 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1517 # -liconv on the link line twice.
1518 case "$LIBINTL" in *$LIBICONV*)
1519         LIBICONV= ;;
1520 esac
1521
1522 AC_ARG_ENABLE(secureplt,
1523 [  --enable-secureplt      enable -msecure-plt by default for PowerPC],
1524 [], [])
1525
1526 AC_ARG_ENABLE(cld,
1527 [  --enable-cld            enable -mcld by default for 32bit x86], [],
1528 [enable_cld=no])
1529
1530 # Windows32 Registry support for specifying GCC installation paths.
1531 AC_ARG_ENABLE(win32-registry,
1532 [  --disable-win32-registry
1533                           disable lookup of installation paths in the
1534                           Registry on Windows hosts
1535   --enable-win32-registry enable registry lookup (default)
1536   --enable-win32-registry=KEY
1537                           use KEY instead of GCC version as the last portion
1538                           of the registry key],,)
1539
1540 case $host_os in
1541   win32 | pe | cygwin* | mingw32* | uwin*)
1542     if test "x$enable_win32_registry" != xno; then
1543       AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1544     fi
1545
1546     if test "x$enable_win32_registry" != xno; then
1547       AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1548   [Define to 1 if installation paths should be looked up in the Windows
1549    Registry. Ignored on non-Windows hosts.])
1550
1551       if test "x$enable_win32_registry" != xyes \
1552          && test "x$enable_win32_registry" != x; then
1553         AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1554   [Define to be the last component of the Windows registry key under which
1555    to look for installation paths.  The full key used will be
1556    HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1557    The default is the GCC version number.])
1558       fi
1559     fi
1560   ;;
1561 esac
1562
1563 # Get an absolute path to the GCC top-level source directory
1564 holddir=`${PWDCMD-pwd}`
1565 cd $srcdir
1566 topdir=`${PWDCMD-pwd}`
1567 cd $holddir
1568
1569 # Conditionalize the makefile for this host machine.
1570 xmake_file=
1571 for f in ${host_xmake_file}
1572 do
1573         if test -f ${srcdir}/config/$f
1574         then
1575                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1576         fi
1577 done
1578
1579 # Conditionalize the makefile for this target machine.
1580 tmake_file_=
1581 for f in ${tmake_file}
1582 do
1583         if test -f ${srcdir}/config/$f
1584         then
1585                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1586         fi
1587 done
1588 tmake_file="${tmake_file_}"
1589
1590 out_object_file=`basename $out_file .c`.o
1591
1592 tm_file_list="options.h"
1593 tm_include_list="options.h"
1594 for f in $tm_file; do
1595   case $f in
1596     ./* )
1597        f=`echo $f | sed 's/^..//'`
1598        tm_file_list="${tm_file_list} $f"
1599        tm_include_list="${tm_include_list} $f"
1600        ;;
1601     defaults.h )
1602        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1603        tm_include_list="${tm_include_list} $f"
1604        ;;
1605     * )
1606        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1607        tm_include_list="${tm_include_list} config/$f"
1608        ;;
1609   esac
1610 done
1611
1612 tm_p_file_list=
1613 tm_p_include_list=
1614 for f in $tm_p_file; do
1615   case $f in
1616     tm-preds.h )
1617        tm_p_file_list="${tm_p_file_list} $f"
1618        tm_p_include_list="${tm_p_include_list} $f"
1619        ;;
1620     * )
1621        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1622        tm_p_include_list="${tm_p_include_list} config/$f"
1623   esac
1624 done
1625
1626 xm_file_list=
1627 xm_include_list=
1628 for f in $xm_file; do
1629   case $f in
1630     ansidecl.h )
1631        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1632        xm_include_list="${xm_include_list} $f"
1633        ;;
1634     auto-host.h )
1635        xm_file_list="${xm_file_list} $f"
1636        xm_include_list="${xm_include_list} $f"
1637        ;;
1638     * )
1639        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1640        xm_include_list="${xm_include_list} config/$f"
1641        ;;
1642   esac
1643 done
1644
1645 host_xm_file_list=
1646 host_xm_include_list=
1647 for f in $host_xm_file; do
1648   case $f in
1649     ansidecl.h )
1650        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1651        host_xm_include_list="${host_xm_include_list} $f"
1652        ;;
1653     auto-host.h )
1654        host_xm_file_list="${host_xm_file_list} $f"
1655        host_xm_include_list="${host_xm_include_list} $f"
1656        ;;
1657     * )
1658        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1659        host_xm_include_list="${host_xm_include_list} config/$f"
1660        ;;
1661   esac
1662 done
1663
1664 build_xm_file_list=
1665 for f in $build_xm_file; do
1666   case $f in
1667     ansidecl.h )
1668        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1669        build_xm_include_list="${build_xm_include_list} $f"
1670        ;;
1671     auto-build.h | auto-host.h )
1672        build_xm_file_list="${build_xm_file_list} $f"
1673        build_xm_include_list="${build_xm_include_list} $f"
1674        ;;
1675     * )
1676        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1677        build_xm_include_list="${build_xm_include_list} config/$f"
1678        ;;
1679   esac
1680 done
1681
1682 # Define macro CROSS_DIRECTORY_STRUCTURE in compilation if this is a
1683 # cross-compiler which does not use the native headers and libraries.
1684 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1685 CROSS=                                          AC_SUBST(CROSS)
1686 ALL=all.internal                                AC_SUBST(ALL)
1687 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1688
1689 if test "x$with_build_sysroot" != x; then
1690   build_system_header_dir=$with_build_sysroot'$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)'
1691 else
1692   # This value is used, even on a native system, because
1693   # CROSS_SYSTEM_HEADER_DIR is just
1694   # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1695   build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1696 fi
1697
1698 if test x$host != x$target
1699 then
1700         CROSS="-DCROSS_DIRECTORY_STRUCTURE"
1701         ALL=all.cross
1702         SYSTEM_HEADER_DIR=$build_system_header_dir
1703         case "$host","$target" in
1704         # Darwin crosses can use the host system's libraries and headers,
1705         # because of the fat library support.  Of course, it must be the
1706         # same version of Darwin on both sides.  Allow the user to
1707         # just say --target=foo-darwin without a version number to mean
1708         # "the version on this system".
1709             *-*-darwin*,*-*-darwin*)
1710                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1711                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1712                 if test $hostos = $targetos -o $targetos = darwin ; then
1713                     CROSS=
1714                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1715                     with_headers=yes
1716                 fi
1717                 ;;
1718
1719             i?86-*-*,x86_64-*-* \
1720             | powerpc*-*-*,powerpc64*-*-*)
1721                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1722         esac
1723 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1724         SYSTEM_HEADER_DIR=$build_system_header_dir
1725 fi
1726
1727 # If this is a cross-compiler that does not
1728 # have its own set of headers then define
1729 # inhibit_libc
1730
1731 # If this is using newlib, without having the headers available now,
1732 # then define inhibit_libc in LIBGCC2_CFLAGS.
1733 # This prevents libgcc2 from containing any code which requires libc
1734 # support.
1735 : ${inhibit_libc=false}
1736 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1737        test x$with_newlib = xyes ; } &&
1738      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1739        inhibit_libc=true
1740 fi
1741 AC_SUBST(inhibit_libc)
1742
1743 # When building gcc with a cross-compiler, we need to adjust things so
1744 # that the generator programs are still built with the native compiler.
1745 # Also, we cannot run fixincludes or fix-header.
1746
1747 # These are the normal (build=host) settings:
1748 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
1749 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1750 BUILD_LDFLAGS='$(LDFLAGS)'      AC_SUBST(BUILD_LDFLAGS)
1751 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1752
1753 # Possibly disable fixproto, on a per-target basis.
1754 case ${use_fixproto} in
1755   no)
1756     STMP_FIXPROTO=
1757     ;;
1758   yes)
1759     STMP_FIXPROTO=stmp-fixproto
1760     ;;
1761 esac
1762 AC_SUBST(STMP_FIXPROTO)
1763
1764 # And these apply if build != host, or we are generating coverage data
1765 if test x$build != x$host || test "x$coverage_flags" != x
1766 then
1767     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1768     BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
1769
1770     if test "x$TARGET_SYSTEM_ROOT" = x; then
1771         if test "x$STMP_FIXPROTO" != x; then
1772           STMP_FIXPROTO=stmp-install-fixproto
1773         fi
1774     fi
1775 fi
1776
1777 # Expand extra_headers to include complete path.
1778 # This substitutes for lots of t-* files.
1779 extra_headers_list=
1780 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1781 for file in ${extra_headers} ; do
1782   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1783 done
1784
1785 # If use_gcc_tgmath is set, append ginclude/tgmath.h.
1786 if test x"$use_gcc_tgmath" = xyes
1787 then extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/tgmath.h"
1788 fi
1789
1790 # Define collect2 in Makefile.
1791 case $host_can_use_collect2 in
1792   no) collect2= ;;
1793   *) collect2='collect2$(exeext)' ;;
1794 esac
1795 AC_SUBST([collect2])
1796
1797 # Add a definition of USE_COLLECT2 if system wants one.
1798 case $use_collect2 in
1799   no) use_collect2= ;;
1800   "") ;;
1801   *)
1802     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1803     xm_defines="${xm_defines} USE_COLLECT2"
1804     case $host_can_use_collect2 in
1805       no)
1806         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1807         ;;
1808     esac
1809     ;;
1810 esac
1811
1812 # ---------------------------
1813 # Assembler & linker features
1814 # ---------------------------
1815
1816 # During stage 2, ld is actually gcc/collect-ld, which is a small script to
1817 # discern between when to use prev-ld/ld-new and when to use ld/ld-new.
1818 # However when ld-new is first executed from the build tree, libtool will
1819 # relink it as .libs/lt-ld-new, so that it can give it an RPATH that refers
1820 # to the build tree.  While doing this we need to use the previous-stage
1821 # linker, or we have an infinite loop.  The presence of a shell script as
1822 # ld/ld-new, and the fact that the script *uses ld itself*, is what confuses
1823 # the gcc/collect-ld script.  So we need to know how libtool works, or
1824 # exec-tool will fail.
1825
1826 m4_defun([_LT_CONFIG_COMMANDS], [])
1827 AC_PROG_LIBTOOL
1828 AC_SUBST(objdir)
1829 AC_SUBST(enable_fast_install)
1830
1831 # Identify the assembler which will work hand-in-glove with the newly
1832 # built GCC, so that we can examine its features.  This is the assembler
1833 # which will be driven by the driver program.
1834 #
1835 # If build != host, and we aren't building gas in-tree, we identify a
1836 # build->target assembler and hope that it will have the same features
1837 # as the host->target assembler we'll be using.
1838 gcc_cv_gas_major_version=
1839 gcc_cv_gas_minor_version=
1840 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1841
1842 m4_pattern_allow([AS_FOR_TARGET])dnl
1843 AS_VAR_SET_IF(gcc_cv_as,, [
1844 if test -x "$DEFAULT_ASSEMBLER"; then
1845         gcc_cv_as="$DEFAULT_ASSEMBLER"
1846 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1847      && test -f ../gas/Makefile \
1848      && test x$build = x$host; then
1849         gcc_cv_as=../gas/as-new$build_exeext
1850 elif test -x as$build_exeext; then
1851         # Build using assembler in the current directory.
1852         gcc_cv_as=./as$build_exeext
1853 elif test -x $AS_FOR_TARGET; then
1854         gcc_cv_as="$AS_FOR_TARGET"
1855 else
1856         AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET)
1857 fi])
1858
1859 ORIGINAL_AS_FOR_TARGET=$gcc_cv_as
1860 AC_SUBST(ORIGINAL_AS_FOR_TARGET)
1861 case "$ORIGINAL_AS_FOR_TARGET" in
1862   ./as | ./as$build_exeext) ;;
1863   *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;;
1864 esac
1865
1866 AC_MSG_CHECKING(what assembler to use)
1867 if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then
1868   # Single tree build which includes gas.  We want to prefer it
1869   # over whatever linker top-level may have detected, since
1870   # we'll use what we're building after installation anyway.
1871   AC_MSG_RESULT(newly built gas)
1872   in_tree_gas=yes
1873   _gcc_COMPUTE_GAS_VERSION
1874   in_tree_gas_is_elf=no
1875   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1876      || (grep 'obj_format = multi' ../gas/Makefile \
1877          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1878   then
1879     in_tree_gas_is_elf=yes
1880   fi
1881 else
1882   AC_MSG_RESULT($gcc_cv_as)
1883   in_tree_gas=no
1884 fi
1885
1886 # Identify the linker which will work hand-in-glove with the newly
1887 # built GCC, so that we can examine its features.  This is the linker
1888 # which will be driven by the driver program.
1889 #
1890 # If build != host, and we aren't building gas in-tree, we identify a
1891 # build->target linker and hope that it will have the same features
1892 # as the host->target linker we'll be using.
1893 gcc_cv_gld_major_version=
1894 gcc_cv_gld_minor_version=
1895 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1896 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1897
1898 AS_VAR_SET_IF(gcc_cv_ld,, [
1899 if test -x "$DEFAULT_LINKER"; then
1900         gcc_cv_ld="$DEFAULT_LINKER"
1901 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1902      && test -f ../ld/Makefile \
1903      && test x$build = x$host; then
1904         gcc_cv_ld=../ld/ld-new$build_exeext
1905 elif test -x collect-ld$build_exeext; then
1906         # Build using linker in the current directory.
1907         gcc_cv_ld=./collect-ld$build_exeext
1908 elif test -x $LD_FOR_TARGET; then
1909         gcc_cv_ld="$LD_FOR_TARGET"
1910 else
1911         AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
1912 fi])
1913
1914 ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld
1915 AC_SUBST(ORIGINAL_LD_FOR_TARGET)
1916 case "$ORIGINAL_LD_FOR_TARGET" in
1917   ./collect-ld | ./collect-ld$build_exeext) ;;
1918   *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
1919 esac
1920
1921 AC_MSG_CHECKING(what linker to use)
1922 if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
1923         # Single tree build which includes ld.  We want to prefer it
1924         # over whatever linker top-level may have detected, since
1925         # we'll use what we're building after installation anyway.
1926         AC_MSG_RESULT(newly built ld)
1927         in_tree_ld=yes
1928         in_tree_ld_is_elf=no
1929         if (grep 'EMUL = .*elf' ../ld/Makefile \
1930             || grep 'EMUL = .*linux' ../ld/Makefile \
1931             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1932           in_tree_ld_is_elf=yes
1933         fi
1934         for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.in $gcc_cv_ld_gld_srcdir/Makefile.in
1935         do
1936 changequote(,)dnl
1937                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1938                 if test x$gcc_cv_gld_version != x; then
1939                         break
1940                 fi
1941         done
1942         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1943         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1944 changequote([,])dnl
1945 else
1946         AC_MSG_RESULT($gcc_cv_ld)
1947         in_tree_ld=no
1948 fi
1949
1950 # Figure out what nm we will be using.
1951 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1952 AS_VAR_SET_IF(gcc_cv_nm,, [
1953 if test -f $gcc_cv_binutils_srcdir/configure.in \
1954      && test -f ../binutils/Makefile \
1955      && test x$build = x$host; then
1956         gcc_cv_nm=../binutils/nm-new$build_exeext
1957 elif test -x nm$build_exeext; then
1958         gcc_cv_nm=./nm$build_exeext
1959 elif test -x $NM_FOR_TARGET; then
1960         gcc_cv_nm="$NM_FOR_TARGET"
1961 else
1962         AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET)
1963 fi])
1964
1965 AC_MSG_CHECKING(what nm to use)
1966 if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then
1967         # Single tree build which includes binutils.
1968         AC_MSG_RESULT(newly built nm)
1969         in_tree_nm=yes
1970 else
1971         AC_MSG_RESULT($gcc_cv_nm)
1972         in_tree_nm=no
1973 fi
1974
1975 ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm
1976 AC_SUBST(ORIGINAL_NM_FOR_TARGET)
1977 case "$ORIGINAL_NM_FOR_TARGET" in
1978   ./nm | ./nm$build_exeext) ;;
1979   *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;;
1980 esac
1981
1982
1983 # Figure out what objdump we will be using.
1984 AS_VAR_SET_IF(gcc_cv_objdump,, [
1985 if test -f $gcc_cv_binutils_srcdir/configure.in \
1986      && test -f ../binutils/Makefile \
1987      && test x$build = x$host; then
1988         # Single tree build which includes binutils.
1989         gcc_cv_objdump=../binutils/objdump$build_exeext
1990 elif test -x objdump$build_exeext; then
1991         gcc_cv_objdump=./objdump$build_exeext
1992 elif test -x $OBJDUMP_FOR_TARGET; then
1993         gcc_cv_objdump="$OBJDUMP_FOR_TARGET"
1994 else
1995         AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET)
1996 fi])
1997
1998 AC_MSG_CHECKING(what objdump to use)
1999 if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then
2000         # Single tree build which includes binutils.
2001         AC_MSG_RESULT(newly built objdump)
2002 elif test x$gcc_cv_objdump = x; then
2003         AC_MSG_RESULT(not found)
2004 else
2005         AC_MSG_RESULT($gcc_cv_objdump)
2006 fi
2007
2008 # Figure out what assembler alignment features are present.
2009 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2010  [2,6,0],,
2011 [.balign 4
2012 .p2align 2],,
2013 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2014   [Define if your assembler supports .balign and .p2align.])])
2015
2016 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2017  [2,8,0],,
2018  [.p2align 4,,7],,
2019 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2020   [Define if your assembler supports specifying the maximum number
2021    of bytes to skip when using the GAS .p2align command.])])
2022
2023 gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16,
2024  [2,8,0],,
2025  [.literal16],,
2026 [AC_DEFINE(HAVE_GAS_LITERAL16, 1,
2027   [Define if your assembler supports .literal16.])])
2028
2029 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2030  [elf,2,9,0],,
2031  [conftest_label1: .word 0
2032 .subsection -1
2033 conftest_label2: .word 0
2034 .previous],
2035  [if test x$gcc_cv_nm != x; then
2036     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2037     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2038     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2039     then :
2040     else gcc_cv_as_subsection_m1=yes
2041     fi
2042     rm -f conftest.nm1 conftest.nm2
2043   fi],
2044  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2045   [Define if your assembler supports .subsection and .subsection -1 starts
2046    emitting at the beginning of your section.])])
2047
2048 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2049  [2,2,0],,
2050  [      .weak foobar],,
2051 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2052
2053 gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref,
2054  [2,17,0],,
2055  [      .weakref foobar, barfnot],,
2056 [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])])
2057
2058 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2059  [2,15,91],,
2060  [      .SPACE $TEXT$
2061         .NSUBSPA $CODE$,COMDAT],,
2062 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2063
2064 # .hidden needs to be supported in both the assembler and the linker,
2065 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2066 # This is irritatingly difficult to feature test for; we have to check the
2067 # date string after the version number.  If we've got an in-tree
2068 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2069 # to be safe.
2070 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2071 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2072  [elf,2,13,0],,
2073 [       .hidden foobar
2074 foobar:])
2075
2076 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2077 [if test $in_tree_ld = yes ; then
2078   gcc_cv_ld_hidden=no
2079   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2080      && test $in_tree_ld_is_elf = yes; then
2081      gcc_cv_ld_hidden=yes
2082   fi
2083 else
2084   gcc_cv_ld_hidden=yes
2085   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2086   if echo "$ld_ver" | grep GNU > /dev/null; then
2087 changequote(,)dnl
2088     ld_vers=`echo $ld_ver | sed -n \
2089         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2090     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2091     ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2092     ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2093     ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2094     if test 0"$ld_date" -lt 20020404; then
2095       if test -n "$ld_date"; then
2096         # If there was date string, but was earlier than 2002-04-04, fail
2097         gcc_cv_ld_hidden=no
2098       elif test -z "$ld_vers"; then
2099         # If there was no date string nor ld version number, something is wrong
2100         gcc_cv_ld_hidden=no
2101       else
2102         test -z "$ld_vers_patch" && ld_vers_patch=0
2103         if test "$ld_vers_major" -lt 2; then
2104           gcc_cv_ld_hidden=no
2105         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2106           gcc_cv_ld_hidden="no"
2107         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2108           gcc_cv_ld_hidden=no
2109         fi
2110       fi
2111 changequote([,])dnl
2112     fi
2113   else
2114     case "${target}" in
2115       hppa64*-*-hpux* | ia64*-*-hpux*)
2116         gcc_cv_ld_hidden=yes
2117         ;;
2118       *)
2119         gcc_cv_ld_hidden=no
2120         ;;
2121     esac
2122   fi
2123 fi])
2124 libgcc_visibility=no
2125 AC_SUBST(libgcc_visibility)
2126 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2127 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2128   libgcc_visibility=yes
2129   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2130   [Define if your assembler and linker support .hidden.])
2131 fi
2132
2133 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2134 gcc_cv_ld_ro_rw_mix=unknown
2135 if test $in_tree_ld = yes ; then
2136   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2137      && test $in_tree_ld_is_elf = yes; then
2138     gcc_cv_ld_ro_rw_mix=read-write
2139   fi
2140 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2141   echo '.section myfoosect, "a"' > conftest1.s
2142   echo '.section myfoosect, "aw"' > conftest2.s
2143   echo '.byte 1' >> conftest2.s
2144   echo '.section myfoosect, "a"' > conftest3.s
2145   echo '.byte 0' >> conftest3.s
2146   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2147      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2148      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2149      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2150         conftest2.o conftest3.o > /dev/null 2>&1; then
2151     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2152                          | sed -e '/myfoosect/!d' -e N`
2153     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2154       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2155         gcc_cv_ld_ro_rw_mix=read-only
2156       else
2157         gcc_cv_ld_ro_rw_mix=read-write
2158       fi
2159     fi
2160   fi
2161 changequote(,)dnl
2162   rm -f conftest.* conftest[123].*
2163 changequote([,])dnl
2164 fi
2165 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2166         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2167   [Define if your linker links a mix of read-only
2168    and read-write sections into a read-write section.])
2169 fi
2170 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2171
2172 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2173 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2174   [elf,2,11,0],,
2175 [       .data
2176         .uleb128 L2 - L1
2177 L1:
2178         .uleb128 1280
2179         .sleb128 -1010
2180 L2:],
2181  [# GAS versions before 2.11 do not support uleb128,
2182   # despite appearing to.
2183   # ??? There exists an elf-specific test that will crash
2184   # the assembler.  Perhaps it's better to figure out whether
2185   # arbitrary sections are supported and try the test.
2186   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2187   if echo "$as_ver" | grep GNU > /dev/null; then
2188 changequote(,)dnl
2189     as_vers=`echo $as_ver | sed -n \
2190         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'`
2191     as_major=`expr "$as_vers" : '\([0-9]*\)'`
2192     as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'`
2193 changequote([,])dnl
2194     if test $as_major -eq 2 && test $as_minor -lt 11
2195     then :
2196     else gcc_cv_as_leb128=yes
2197     fi
2198   fi],
2199   [AC_DEFINE(HAVE_AS_LEB128, 1,
2200     [Define if your assembler supports .sleb128 and .uleb128.])])
2201
2202 # Check if we have assembler support for unwind directives.
2203 gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive,
2204   ,,
2205 [       .text
2206         .cfi_startproc
2207         .cfi_offset 0, 0
2208         .cfi_same_value 1
2209         .cfi_def_cfa 1, 2
2210         .cfi_escape 1, 2, 3, 4, 5
2211         .cfi_endproc],
2212 [case "$target" in
2213   *-*-solaris*)
2214     # If the linker used on Solaris (like Sun ld) isn't capable of merging
2215     # read-only and read-write sections, we need to make sure that the
2216     # assembler used emits read-write .eh_frame sections.
2217     if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then
2218       if test "x$gcc_cv_objdump" != x; then
2219         if $gcc_cv_objdump -h conftest.o 2>/dev/null | \
2220                 sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then
2221           gcc_cv_as_cfi_directive=no
2222         else
2223           gcc_cv_as_cfi_directive=yes
2224         fi
2225       else
2226         # no objdump, err on the side of caution
2227         gcc_cv_as_cfi_directive=no
2228       fi
2229     else
2230       gcc_cv_as_cfi_directive=yes
2231     fi
2232     ;;
2233   *-*-*)
2234     gcc_cv_as_cfi_directive=yes
2235     ;;
2236 esac])
2237 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE,
2238   [`if test $gcc_cv_as_cfi_directive = yes; then echo 1; else echo 0; fi`],
2239   [Define 0/1 if your assembler supports CFI directives.])
2240
2241 gcc_GAS_CHECK_FEATURE([cfi personality directive],
2242   gcc_cv_as_cfi_personality_directive, ,,
2243 [       .text
2244         .cfi_startproc
2245         .cfi_personality 0, symbol
2246         .cfi_endproc])
2247 AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE,
2248   [`if test $gcc_cv_as_cfi_personality_directive = yes;
2249     then echo 1; else echo 0; fi`],
2250   [Define 0/1 if your assembler supports .cfi_personality.])
2251
2252 # GAS versions up to and including 2.11.0 may mis-optimize
2253 # .eh_frame data.
2254 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2255   [elf,2,12,0],,
2256 [       .text
2257 .LFB1:
2258         .4byte  0
2259 .L1:
2260         .4byte  0
2261 .LFE1:
2262         .section        .eh_frame,"aw",@progbits
2263 __FRAME_BEGIN__:
2264         .4byte  .LECIE1-.LSCIE1
2265 .LSCIE1:
2266         .4byte  0x0
2267         .byte   0x1
2268         .ascii "z\0"
2269         .byte   0x1
2270         .byte   0x78
2271         .byte   0x1a
2272         .byte   0x0
2273         .byte   0x4
2274         .4byte  1
2275         .p2align 1
2276 .LECIE1:
2277 .LSFDE1:
2278         .4byte  .LEFDE1-.LASFDE1
2279 .LASFDE1:
2280         .4byte  .LASFDE1-__FRAME_BEGIN__
2281         .4byte  .LFB1
2282         .4byte  .LFE1-.LFB1
2283         .byte   0x4
2284         .4byte  .LFE1-.LFB1
2285         .byte   0x4
2286         .4byte  .L1-.LFB1
2287 .LEFDE1:],
2288 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2289 cat > conftest.lit <<EOF
2290  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2291  0010 01000000 12000000 18000000 00000000  ................
2292  0020 08000000 04080000 0044               .........D      @&t@
2293 EOF
2294 cat > conftest.big <<EOF
2295  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2296  0010 00000001 00000012 00000018 00000000  ................
2297  0020 00000008 04000000 0844               .........D      @&t@
2298 EOF
2299   # If the assembler didn't choke, and we can objdump,
2300   # and we got the correct data, then succeed.
2301   # The text in the here-document typically retains its unix-style line
2302   # endings, while the output of objdump will use host line endings.
2303   # Therefore, use diff -b for the comparisons.
2304   if test x$gcc_cv_objdump != x \
2305   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2306      | tail -3 > conftest.got \
2307   && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \
2308     || diff -b conftest.big conftest.got > /dev/null 2>&1; }
2309   then
2310     gcc_cv_as_eh_frame=yes
2311   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2312     gcc_cv_as_eh_frame=buggy
2313   else
2314     # Uh oh, what do we do now?
2315     gcc_cv_as_eh_frame=no
2316   fi])
2317
2318 if test $gcc_cv_as_eh_frame = buggy; then
2319   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2320   [Define if your assembler mis-optimizes .eh_frame data.])
2321 fi
2322
2323 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2324  [elf,2,12,0], [--fatal-warnings],
2325  [.section .rodata.str, "aMS", @progbits, 1])
2326 if test $gcc_cv_as_shf_merge = no; then
2327   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2328     [elf,2,12,0], [--fatal-warnings],
2329     [.section .rodata.str, "aMS", %progbits, 1])
2330 fi
2331 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2332   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2333 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2334
2335 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2336  [elf,2,16,0], [--fatal-warnings],
2337  [.section .text,"axG",@progbits,.foo,comdat])
2338 if test $gcc_cv_as_comdat_group = yes; then
2339   gcc_cv_as_comdat_group_percent=no
2340 else
2341  gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2342    [elf,2,16,0], [--fatal-warnings],
2343    [.section .text,"axG",%progbits,.foo,comdat])
2344 fi
2345 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2346   comdat_group=yes
2347   if test 0"$ld_date" -lt 20050308; then
2348     if test -n "$ld_date"; then
2349       # If there was date string, but was earlier than 2005-03-08, fail
2350       comdat_group=no
2351     elif test "$ld_vers_major" -lt 2; then
2352       comdat_group=no
2353     elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2354       comdat_group=no
2355     fi
2356   fi
2357 else
2358   # assume linkers other than GNU ld don't support COMDAT group
2359   comdat_group=no
2360 fi
2361 if test $comdat_group = no; then
2362   gcc_cv_as_comdat_group=no
2363   gcc_cv_as_comdat_group_percent=no
2364 fi
2365 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2366   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2367 [Define 0/1 if your assembler and linker support COMDAT groups.])
2368
2369 # Thread-local storage - the check is heavily parameterized.
2370 conftest_s=
2371 tls_first_major=
2372 tls_first_minor=
2373 tls_as_opt=
2374 case "$target" in
2375 changequote(,)dnl
2376   alpha*-*-*)
2377     conftest_s='
2378         .section ".tdata","awT",@progbits
2379 foo:    .long   25
2380         .text
2381         ldq     $27,__tls_get_addr($29)         !literal!1
2382         lda     $16,foo($29)                    !tlsgd!1
2383         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2384         ldq     $27,__tls_get_addr($29)         !literal!2
2385         lda     $16,foo($29)                    !tlsldm!2
2386         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2387         ldq     $1,foo($29)                     !gotdtprel
2388         ldah    $2,foo($29)                     !dtprelhi
2389         lda     $3,foo($2)                      !dtprello
2390         lda     $4,foo($29)                     !dtprel
2391         ldq     $1,foo($29)                     !gottprel
2392         ldah    $2,foo($29)                     !tprelhi
2393         lda     $3,foo($2)                      !tprello
2394         lda     $4,foo($29)                     !tprel'
2395         tls_first_major=2
2396         tls_first_minor=13
2397         tls_as_opt=--fatal-warnings
2398         ;;
2399   frv*-*-*)
2400     conftest_s='
2401         .section ".tdata","awT",@progbits
2402 x:      .long   25
2403         .text
2404         call    #gettlsoff(x)'
2405         tls_first_major=2
2406         tls_first_minor=14
2407         ;;
2408   hppa*-*-linux*)
2409     conftest_s='
2410 t1:     .reg    %r20
2411 t2:     .reg    %r21
2412 gp:     .reg    %r19
2413         .section ".tdata","awT",@progbits
2414 foo:    .long   25
2415         .text
2416         .align  4
2417         addil LT%foo-$tls_gdidx$,gp
2418         ldo RT%foo-$tls_gdidx$(%r1),%arg0
2419         b __tls_get_addr
2420         nop
2421         addil LT%foo-$tls_ldidx$,gp
2422         b __tls_get_addr
2423         ldo RT%foo-$tls_ldidx$(%r1),%arg0
2424         addil LR%foo-$tls_dtpoff$,%ret0
2425         ldo RR%foo-$tls_dtpoff$(%r1),%t1
2426         mfctl %cr27,%t1
2427         addil LT%foo-$tls_ieoff$,gp
2428         ldw RT%foo-$tls_ieoff$(%r1),%t2
2429         add %t1,%t2,%t3
2430         mfctl %cr27,%t1
2431         addil LR%foo-$tls_leoff$,%t1
2432         ldo RR%foo-$tls_leoff$(%r1),%t2'
2433         tls_first_major=2
2434         tls_first_minor=15
2435         tls_as_opt=--fatal-warnings
2436         ;;
2437   arm*-*-*)
2438     conftest_s='
2439         .section ".tdata","awT",%progbits
2440 foo:    .long   25
2441         .text
2442 .word foo(gottpoff)
2443 .word foo(tpoff)
2444 .word foo(tlsgd)
2445 .word foo(tlsldm)
2446 .word foo(tlsldo)'
2447         tls_first_major=2
2448         tls_first_minor=17
2449         ;;
2450   i[34567]86-*-*)
2451     conftest_s='
2452         .section ".tdata","awT",@progbits
2453 foo:    .long   25
2454         .text
2455         movl    %gs:0, %eax
2456         leal    foo@TLSGD(,%ebx,1), %eax
2457         leal    foo@TLSLDM(%ebx), %eax
2458         leal    foo@DTPOFF(%eax), %edx
2459         movl    foo@GOTTPOFF(%ebx), %eax
2460         subl    foo@GOTTPOFF(%ebx), %eax
2461         addl    foo@GOTNTPOFF(%ebx), %eax
2462         movl    foo@INDNTPOFF, %eax
2463         movl    $foo@TPOFF, %eax
2464         subl    $foo@TPOFF, %eax
2465         leal    foo@NTPOFF(%ecx), %eax'
2466         tls_first_major=2
2467         tls_first_minor=14
2468         tls_as_opt=--fatal-warnings
2469         ;;
2470   x86_64-*-*)
2471     conftest_s='
2472         .section ".tdata","awT",@progbits
2473 foo:    .long   25
2474         .text
2475         movq    %fs:0, %rax
2476         leaq    foo@TLSGD(%rip), %rdi
2477         leaq    foo@TLSLD(%rip), %rdi
2478         leaq    foo@DTPOFF(%rax), %rdx
2479         movq    foo@GOTTPOFF(%rip), %rax
2480         movq    $foo@TPOFF, %rax'
2481         tls_first_major=2
2482         tls_first_minor=14
2483         tls_as_opt=--fatal-warnings
2484         ;;
2485   ia64-*-*)
2486     conftest_s='
2487         .section ".tdata","awT",@progbits
2488 foo:    data8   25
2489         .text
2490         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2491         addl    r17 = @ltoff(@dtprel(foo#)), gp
2492         addl    r18 = @ltoff(@tprel(foo#)), gp
2493         addl    r19 = @dtprel(foo#), gp
2494         adds    r21 = @dtprel(foo#), r13
2495         movl    r23 = @dtprel(foo#)
2496         addl    r20 = @tprel(foo#), gp
2497         adds    r22 = @tprel(foo#), r13
2498         movl    r24 = @tprel(foo#)'
2499         tls_first_major=2
2500         tls_first_minor=13
2501         tls_as_opt=--fatal-warnings
2502         ;;
2503   mips*-*-*)
2504     conftest_s='
2505         .section .tdata,"awT",@progbits
2506 x:
2507         .word 2
2508         .text
2509         addiu $4, $28, %tlsgd(x)
2510         addiu $4, $28, %tlsldm(x)
2511         lui $4, %dtprel_hi(x)
2512         addiu $4, $4, %dtprel_lo(x)
2513         lw $4, %gottprel(x)($28)
2514         lui $4, %tprel_hi(x)
2515         addiu $4, $4, %tprel_lo(x)'
2516         tls_first_major=2
2517         tls_first_minor=16
2518         tls_as_opt='-32 --fatal-warnings'
2519         ;;
2520   powerpc-*-*)
2521     conftest_s='
2522         .section ".tdata","awT",@progbits
2523         .align 2
2524 ld0:    .space 4
2525 ld1:    .space 4
2526 x1:     .space 4
2527 x2:     .space 4
2528 x3:     .space 4
2529         .text
2530         addi 3,31,ld0@got@tlsgd
2531         bl __tls_get_addr
2532         addi 3,31,x1@got@tlsld
2533         bl __tls_get_addr
2534         addi 9,3,x1@dtprel
2535         addis 9,3,x2@dtprel@ha
2536         addi 9,9,x2@dtprel@l
2537         lwz 9,x3@got@tprel(31)
2538         add 9,9,x@tls
2539         addi 9,2,x1@tprel
2540         addis 9,2,x2@tprel@ha
2541         addi 9,9,x2@tprel@l'
2542         tls_first_major=2
2543         tls_first_minor=14
2544         tls_as_opt="-a32 --fatal-warnings"
2545         ;;
2546   powerpc64-*-*)
2547     conftest_s='
2548         .section ".tdata","awT",@progbits
2549         .align 3
2550 ld0:    .space 8
2551 ld1:    .space 8
2552 x1:     .space 8
2553 x2:     .space 8
2554 x3:     .space 8
2555         .text
2556         addi 3,2,ld0@got@tlsgd
2557         bl .__tls_get_addr
2558         nop
2559         addi 3,2,ld1@toc
2560         bl .__tls_get_addr
2561         nop
2562         addi 3,2,x1@got@tlsld
2563         bl .__tls_get_addr
2564         nop
2565         addi 9,3,x1@dtprel
2566         bl .__tls_get_addr
2567         nop
2568         addis 9,3,x2@dtprel@ha
2569         addi 9,9,x2@dtprel@l
2570         bl .__tls_get_addr
2571         nop
2572         ld 9,x3@got@dtprel(2)
2573         add 9,9,3
2574         bl .__tls_get_addr
2575         nop'
2576         tls_first_major=2
2577         tls_first_minor=14
2578         tls_as_opt="-a64 --fatal-warnings"
2579         ;;
2580   s390-*-*)
2581     conftest_s='
2582         .section ".tdata","awT",@progbits
2583 foo:    .long   25
2584         .text
2585         .long   foo@TLSGD
2586         .long   foo@TLSLDM
2587         .long   foo@DTPOFF
2588         .long   foo@NTPOFF
2589         .long   foo@GOTNTPOFF
2590         .long   foo@INDNTPOFF
2591         l       %r1,foo@GOTNTPOFF(%r12)
2592         l       %r1,0(%r1):tls_load:foo
2593         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2594         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2595         tls_first_major=2
2596         tls_first_minor=14
2597         tls_as_opt="-m31 --fatal-warnings"
2598         ;;
2599   s390x-*-*)
2600     conftest_s='
2601         .section ".tdata","awT",@progbits
2602 foo:    .long   25
2603         .text
2604         .quad   foo@TLSGD
2605         .quad   foo@TLSLDM
2606         .quad   foo@DTPOFF
2607         .quad   foo@NTPOFF
2608         .quad   foo@GOTNTPOFF
2609         lg      %r1,foo@GOTNTPOFF(%r12)
2610         larl    %r1,foo@INDNTPOFF
2611         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2612         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2613         tls_first_major=2
2614         tls_first_minor=14
2615         tls_as_opt="-m64 -Aesame --fatal-warnings"
2616         ;;
2617   sh-*-* | sh[34]-*-*)
2618     conftest_s='
2619         .section ".tdata","awT",@progbits
2620 foo:    .long   25
2621         .text
2622         .long   foo@TLSGD
2623         .long   foo@TLSLDM
2624         .long   foo@DTPOFF
2625         .long   foo@GOTTPOFF
2626         .long   foo@TPOFF'
2627         tls_first_major=2
2628         tls_first_minor=13
2629         tls_as_opt=--fatal-warnings
2630         ;;
2631   sparc*-*-*)
2632     case "$target" in
2633       sparc*-sun-solaris2.[56789]*)
2634         # TLS was introduced in the Solaris 9 4/04 release but
2635         # we do not enable it by default on Solaris 9 either.
2636         if test "x$enable_tls" = xyes ; then
2637           on_solaris=yes
2638         else
2639           enable_tls=no;
2640         fi
2641         ;;
2642       sparc*-sun-solaris2.*)
2643         on_solaris=yes
2644         ;;
2645       *)
2646         on_solaris=no
2647         ;;
2648     esac
2649     if test x$on_solaris = xyes && test x$gas_flag = xno; then
2650       conftest_s='
2651         .section ".tdata",#alloc,#write,#tls
2652 foo:    .long   25
2653         .text
2654         sethi   %tgd_hi22(foo), %o0
2655         add     %o0, %tgd_lo10(foo), %o1
2656         add     %l7, %o1, %o0, %tgd_add(foo)
2657         call    __tls_get_addr, %tgd_call(foo)
2658         sethi   %tldm_hi22(foo), %l1
2659         add     %l1, %tldm_lo10(foo), %l2
2660         add     %l7, %l2, %o0, %tldm_add(foo)
2661         call    __tls_get_addr, %tldm_call(foo)
2662         sethi   %tldo_hix22(foo), %l3
2663         xor     %l3, %tldo_lox10(foo), %l4
2664         add     %o0, %l4, %l5, %tldo_add(foo)
2665         sethi   %tie_hi22(foo), %o3
2666         add     %o3, %tie_lo10(foo), %o3
2667         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2668         add     %g7, %o2, %o4, %tie_add(foo)
2669         sethi   %tle_hix22(foo), %l1
2670         xor     %l1, %tle_lox10(foo), %o5
2671         ld      [%g7 + %o5], %o1'
2672         tls_first_major=0
2673         tls_first_minor=0
2674     else
2675       conftest_s='
2676         .section ".tdata","awT",@progbits
2677 foo:    .long   25
2678         .text
2679         sethi   %tgd_hi22(foo), %o0
2680         add     %o0, %tgd_lo10(foo), %o1
2681         add     %l7, %o1, %o0, %tgd_add(foo)
2682         call    __tls_get_addr, %tgd_call(foo)
2683         sethi   %tldm_hi22(foo), %l1
2684         add     %l1, %tldm_lo10(foo), %l2
2685         add     %l7, %l2, %o0, %tldm_add(foo)
2686         call    __tls_get_addr, %tldm_call(foo)
2687         sethi   %tldo_hix22(foo), %l3
2688         xor     %l3, %tldo_lox10(foo), %l4
2689         add     %o0, %l4, %l5, %tldo_add(foo)
2690         sethi   %tie_hi22(foo), %o3
2691         add     %o3, %tie_lo10(foo), %o3
2692         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2693         add     %g7, %o2, %o4, %tie_add(foo)
2694         sethi   %tle_hix22(foo), %l1
2695         xor     %l1, %tle_lox10(foo), %o5
2696         ld      [%g7 + %o5], %o1'
2697         tls_first_major=2
2698         tls_first_minor=14
2699         tls_as_opt="-32 --fatal-warnings"
2700       fi
2701         ;;
2702   xtensa*-*-*)
2703     conftest_s='
2704         .section ".tdata","awT",@progbits
2705 foo:    .long   25
2706         .text
2707         movi    a8, foo@TLSFUNC
2708         movi    a10, foo@TLSARG
2709         callx8.tls a8, foo@TLSCALL'
2710         tls_first_major=2
2711         tls_first_minor=19
2712         ;;
2713 changequote([,])dnl
2714 esac
2715 set_have_as_tls=no
2716 if test "x$enable_tls" = xno ; then
2717   : # TLS explicitly disabled.
2718 elif test "x$enable_tls" = xyes ; then
2719   set_have_as_tls=yes # TLS explicitly enabled.
2720 elif test -z "$tls_first_major"; then
2721   : # If we don't have a check, assume no support.
2722 else
2723   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2724   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2725   [set_have_as_tls=yes])
2726 fi
2727 if test $set_have_as_tls = yes ; then
2728   AC_DEFINE(HAVE_AS_TLS, 1,
2729             [Define if your assembler supports thread-local storage.])
2730 fi
2731
2732 # Target-specific assembler checks.
2733
2734 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2735 gcc_cv_ld_static_dynamic=no
2736 if test $in_tree_ld = yes ; then
2737   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2738     gcc_cv_ld_static_dynamic=yes
2739   fi
2740 elif test x$gcc_cv_ld != x; then
2741         # Check if linker supports -Bstatic/-Bdynamic option
2742         if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2743           && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2744                 gcc_cv_ld_static_dynamic=yes
2745         fi
2746 fi
2747 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2748         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2749 [Define if your linker supports -Bstatic/-Bdynamic option.])
2750 fi
2751 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2752
2753 if test x"$demangler_in_ld" = xyes; then
2754   AC_MSG_CHECKING(linker --demangle support)
2755   gcc_cv_ld_demangle=no
2756   if test $in_tree_ld = yes; then
2757     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2758       gcc_cv_ld_demangle=yes
2759     fi
2760   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2761     # Check if the GNU linker supports --demangle option
2762     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2763       gcc_cv_ld_demangle=yes
2764     fi
2765   fi
2766   if test x"$gcc_cv_ld_demangle" = xyes; then
2767     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2768 [Define if your linker supports --demangle option.])
2769   fi
2770   AC_MSG_RESULT($gcc_cv_ld_demangle)
2771 fi
2772
2773 case "$target" in
2774   # All TARGET_ABI_OSF targets.
2775   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2776     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2777         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2778 [       .set nomacro
2779         .text
2780         extbl   $3, $2, $3      !lituse_bytoff!1
2781         ldq     $2, a($29)      !literal!1
2782         ldq     $4, b($29)      !literal!2
2783         ldq_u   $3, 0($2)       !lituse_base!1
2784         ldq     $27, f($29)     !literal!5
2785         jsr     $26, ($27), f   !lituse_jsr!5
2786         ldah    $29, 0($26)     !gpdisp!3
2787         lda     $0, c($29)      !gprel
2788         ldah    $1, d($29)      !gprelhigh
2789         lda     $1, d($1)       !gprellow
2790         lda     $29, 0($29)     !gpdisp!3],,
2791     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2792   [Define if your assembler supports explicit relocations.])])
2793     gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2794         gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2795 [       .set nomacro
2796         .text
2797         ldq     $27, a($29)     !literal!1
2798         jsr     $26, ($27), a   !lituse_jsrdirect!1],,
2799     [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2800   [Define if your assembler supports the lituse_jsrdirect relocation.])])
2801     ;;
2802
2803   cris-*-*)
2804     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2805       gcc_cv_as_cris_no_mul_bug,[2,15,91],
2806       [-no-mul-bug-abort], [.text],,
2807       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2808                 [Define if your assembler supports the -no-mul-bug-abort option.])])
2809     ;;
2810
2811   sparc*-*-*)
2812     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2813       [.register %g2, #scratch],,
2814       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2815                 [Define if your assembler supports .register.])])
2816
2817     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2818       [-relax], [.text],,
2819       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2820                 [Define if your assembler supports -relax option.])])
2821
2822     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2823       gcc_cv_as_sparc_ua_pcrel,,
2824       [-K PIC],
2825 [.text
2826 foo:
2827         nop
2828 .data
2829 .align 4
2830 .byte 0
2831 .uaword %r_disp32(foo)],
2832       [if test x$gcc_cv_ld != x \
2833        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2834          gcc_cv_as_sparc_ua_pcrel=yes
2835        fi
2836        rm -f conftest],
2837       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2838                 [Define if your assembler and linker support unaligned PC relative relocs.])
2839
2840       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2841         gcc_cv_as_sparc_ua_pcrel_hidden,,
2842         [-K PIC],
2843 [.data
2844 .align 4
2845 .byte 0x31
2846 .uaword %r_disp32(foo)
2847 .byte 0x32, 0x33, 0x34
2848 .global foo
2849 .hidden foo
2850 foo:
2851 .skip 4],
2852         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2853          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2854          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2855             | grep ' 31000000 07323334' > /dev/null 2>&1; then
2856             if $gcc_cv_objdump -R conftest 2> /dev/null \
2857                | grep 'DISP32' > /dev/null 2>&1; then
2858                 :
2859             else
2860                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2861             fi
2862          fi
2863          rm -f conftest],
2864          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2865                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2866     ]) # unaligned pcrel relocs
2867
2868     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2869       gcc_cv_as_sparc_offsetable_lo10,,
2870       [-xarch=v9],
2871 [.text
2872         or %g1, %lo(ab) + 12, %g1
2873         or %g1, %lo(ab + 12), %g1],
2874       [if test x$gcc_cv_objdump != x \
2875        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2876           | grep ' 82106000 82106000' > /dev/null 2>&1; then
2877          gcc_cv_as_sparc_offsetable_lo10=yes
2878        fi],
2879        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2880                  [Define if your assembler supports offsetable %lo().])])
2881     ;;
2882
2883 changequote(,)dnl
2884   i[34567]86-*-* | x86_64-*-*)
2885 changequote([,])dnl
2886     case $target_os in
2887       cygwin* | pe | mingw32*)
2888         # Used for DWARF 2 in PE
2889         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2890           gcc_cv_as_ix86_pe_secrel32,
2891           [2,15,91],,
2892 [.text
2893 foo:    nop
2894 .data
2895         .secrel32 foo],
2896           [if test x$gcc_cv_ld != x \
2897            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2898              gcc_cv_as_ix86_pe_secrel32=yes
2899            fi
2900            rm -f conftest],
2901           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2902             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2903         ;;
2904     esac
2905
2906     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2907        gcc_cv_as_ix86_filds_fists,
2908       [2,9,0],, [filds mem; fists mem],,
2909       [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2910         [Define if your assembler uses the new HImode fild and fist notation.])])
2911
2912     gcc_GAS_CHECK_FEATURE([cmov syntax],
2913       gcc_cv_as_ix86_cmov_sun_syntax,,,
2914       [cmovl.l %edx, %eax],,
2915       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2916         [Define if your assembler supports the Sun syntax for cmov.])])
2917
2918     gcc_GAS_CHECK_FEATURE([ffreep mnemonic],
2919       gcc_cv_as_ix86_ffreep,,,
2920       [ffreep %st(1)],,
2921       [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1,
2922         [Define if your assembler supports the ffreep mnemonic.])])
2923
2924     gcc_GAS_CHECK_FEATURE([sahf mnemonic],
2925       gcc_cv_as_ix86_sahf,,,
2926       [sahf],,
2927       [AC_DEFINE(HAVE_AS_IX86_SAHF, 1,
2928         [Define if your assembler supports the sahf mnemonic.])])
2929
2930     gcc_GAS_CHECK_FEATURE([different section symbol subtraction],
2931       gcc_cv_as_ix86_diff_sect_delta,,,
2932       [.section .rodata
2933 .L1:
2934         .long .L2-.L1
2935         .long .L3-.L1
2936         .text
2937 .L3:    nop
2938 .L2:    nop],,
2939       [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1,
2940         [Define if your assembler supports the subtraction of symbols in different sections.])])
2941
2942     # This one is used unconditionally by i386.[ch]; it is to be defined
2943     # to 1 if the feature is present, 0 otherwise.
2944     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2945         gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2946 [       .text
2947 .L0:
2948         nop
2949         .data
2950         .long .L0@GOTOFF])
2951     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2952       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2953       [Define true if the assembler supports '.long foo@GOTOFF'.])
2954     ;;
2955
2956   ia64*-*-*)
2957     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2958         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2959 [       .text
2960         addl r15 = @ltoffx(x#), gp
2961         ;;
2962         ld8.mov r16 = [[r15]], x#],,
2963     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2964           [Define if your assembler supports ltoffx and ldxmov relocations.])])
2965
2966     ;;
2967
2968   powerpc*-*-*)
2969     case $target in
2970       *-*-aix*) conftest_s='    .machine "pwr5"
2971         .csect .text[[PR]]
2972         mfcr 3,128';;
2973       *-*-darwin*)
2974         gcc_GAS_CHECK_FEATURE([.machine directive support],
2975           gcc_cv_as_machine_directive,,,
2976           [     .machine ppc7400])
2977         if test x$gcc_cv_as_machine_directive != xyes; then
2978           echo "*** This target requires an assembler supporting \".machine\"" >&2
2979           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2980           test x$build = x$target && exit 1
2981         fi
2982         conftest_s='    .text
2983         mfcr r3,128';;
2984       *) conftest_s='   .machine power4
2985         .text
2986         mfcr 3,128';;
2987     esac
2988
2989     gcc_GAS_CHECK_FEATURE([mfcr field support],
2990       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2991       [$conftest_s],,
2992       [AC_DEFINE(HAVE_AS_MFCRF, 1,
2993           [Define if your assembler supports mfcr field.])])
2994
2995     case $target in
2996       *-*-aix*) conftest_s='    .machine "pwr5"
2997         .csect .text[[PR]]
2998         popcntb 3,3';;
2999       *) conftest_s='   .machine power5
3000         .text
3001         popcntb 3,3';;
3002     esac
3003
3004     gcc_GAS_CHECK_FEATURE([popcntb support],
3005       gcc_cv_as_powerpc_popcntb, [2,17,0],,
3006       [$conftest_s],,
3007       [AC_DEFINE(HAVE_AS_POPCNTB, 1,
3008           [Define if your assembler supports popcntb field.])])
3009
3010     case $target in
3011       *-*-aix*) conftest_s='    .machine "pwr5x"
3012         .csect .text[[PR]]
3013         frin 1,1';;
3014       *) conftest_s='   .machine power5
3015         .text
3016         frin 1,1';;
3017     esac
3018
3019     gcc_GAS_CHECK_FEATURE([fp round support],
3020       gcc_cv_as_powerpc_fprnd, [2,17,0],,
3021       [$conftest_s],,
3022       [AC_DEFINE(HAVE_AS_FPRND, 1,
3023           [Define if your assembler supports fprnd.])])
3024
3025     case $target in
3026       *-*-aix*) conftest_s='    .machine "pwr6"
3027         .csect .text[[PR]]
3028         mffgpr 1,3';;
3029       *) conftest_s='   .machine power6
3030         .text
3031         mffgpr 1,3';;
3032     esac
3033
3034     gcc_GAS_CHECK_FEATURE([move fp gpr support],
3035       gcc_cv_as_powerpc_mfpgpr, [9,99,0],,
3036       [$conftest_s],,
3037       [AC_DEFINE(HAVE_AS_MFPGPR, 1,
3038           [Define if your assembler supports mffgpr and mftgpr.])])
3039
3040     case $target in
3041       *-*-aix*) conftest_s='    .csect .text[[PR]]
3042 LCF..0:
3043         addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
3044       *-*-darwin*)
3045         conftest_s='    .text
3046 LCF0:
3047         addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
3048       *) conftest_s='   .text
3049 .LCF0:
3050         addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
3051     esac
3052
3053     gcc_GAS_CHECK_FEATURE([rel16 relocs],
3054       gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
3055       [$conftest_s],,
3056       [AC_DEFINE(HAVE_AS_REL16, 1,
3057           [Define if your assembler supports R_PPC_REL16 relocs.])])
3058
3059     case $target in
3060       *-*-aix*) conftest_s='    .machine "pwr6"
3061         .csect .text[[PR]]
3062         cmpb 3,4,5';;
3063       *) conftest_s='   .machine power6
3064         .text
3065         cmpb 3,4,5';;
3066     esac
3067
3068     gcc_GAS_CHECK_FEATURE([compare bytes support],
3069       gcc_cv_as_powerpc_cmpb, [9,99,0], -a32,
3070       [$conftest_s],,
3071       [AC_DEFINE(HAVE_AS_CMPB, 1,
3072           [Define if your assembler supports cmpb.])])
3073
3074     case $target in
3075       *-*-aix*) conftest_s='    .machine "pwr6"
3076         .csect .text[[PR]]
3077         dadd 1,2,3';;
3078       *) conftest_s='   .machine power6
3079         .text
3080         dadd 1,2,3';;
3081     esac
3082
3083     gcc_GAS_CHECK_FEATURE([decimal float support],
3084       gcc_cv_as_powerpc_dfp, [9,99,0], -a32,
3085       [$conftest_s],,
3086       [AC_DEFINE(HAVE_AS_DFP, 1,
3087           [Define if your assembler supports DFP instructions.])])
3088
3089     case $target in
3090       *-*-aix*) conftest_s='    .machine "pwr7"
3091         .csect .text[[PR]]
3092         lxvd2x 1,2,3';;
3093       *) conftest_s='   .machine power7
3094         .text
3095         lxvd2x 1,2,3';;
3096     esac
3097
3098     gcc_GAS_CHECK_FEATURE([vector-scalar support],
3099       gcc_cv_as_powerpc_vsx, [9,99,0], -a32,
3100       [$conftest_s],,
3101       [AC_DEFINE(HAVE_AS_VSX, 1,
3102           [Define if your assembler supports VSX instructions.])])
3103
3104     gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3105       gcc_cv_as_powerpc_gnu_attribute, [2,18,0],,
3106       [.gnu_attribute 4,1],,
3107       [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3108           [Define if your assembler supports .gnu_attribute.])])
3109     ;;
3110
3111   mips*-*-*)
3112     gcc_GAS_CHECK_FEATURE([explicit relocation support],
3113       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
3114 [       lw $4,%gp_rel(foo)($4)],,
3115       [if test x$target_cpu_default = x
3116        then target_cpu_default=MASK_EXPLICIT_RELOCS
3117        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
3118        fi])
3119     gcc_GAS_CHECK_FEATURE([-mno-shared support],
3120       gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],,
3121       [AC_DEFINE(HAVE_AS_NO_SHARED, 1,
3122                  [Define if the assembler understands -mno-shared.])])
3123
3124     gcc_GAS_CHECK_FEATURE([.gnu_attribute support],
3125       gcc_cv_as_mips_gnu_attribute, [2,18,0],,
3126       [.gnu_attribute 4,1],,
3127       [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1,
3128           [Define if your assembler supports .gnu_attribute.])])
3129
3130     gcc_GAS_CHECK_FEATURE([.dtprelword support],
3131       gcc_cv_as_mips_dtprelword, [2,18,0],,
3132       [.section .tdata,"awT",@progbits
3133 x:
3134         .word 2
3135         .text
3136         .dtprelword x+0x8000],,
3137       [AC_DEFINE(HAVE_AS_DTPRELWORD, 1,
3138           [Define if your assembler supports .dtprelword.])])
3139     ;;
3140 esac
3141
3142 # Mips and HP-UX need the GNU assembler.
3143 # Linux on IA64 might be able to use the Intel assembler.
3144
3145 case "$target" in
3146   mips*-*-* | *-*-hpux* )
3147     if test x$gas_flag = xyes \
3148        || test x"$host" != x"$build" \
3149        || test ! -x "$gcc_cv_as" \
3150        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
3151       :
3152     else
3153       echo "*** This configuration requires the GNU assembler" >&2
3154       exit 1
3155     fi
3156     ;;
3157 esac
3158
3159 # ??? Not all targets support dwarf2 debug_line, even within a version
3160 # of gas.  Moreover, we need to emit a valid instruction to trigger any
3161 # info to the output file.  So, as supported targets are added to gas 2.11,
3162 # add some instruction here to (also) show we expect this might work.
3163 # ??? Once 2.11 is released, probably need to add first known working
3164 # version to the per-target configury.
3165 case "$target" in
3166   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
3167   | x86_64*-*-* | hppa*-*-* | arm*-*-* \
3168   | xstormy16*-*-* | cris-*-* | xtensa*-*-* | bfin-*-* | score*-*-* \
3169   | spu-*-* | fido*-*-*)
3170     insn="nop"
3171     ;;
3172   ia64*-*-* | s390*-*-*)
3173     insn="nop 0"
3174     ;;
3175   mmix-*-*)
3176     insn="swym 0"
3177     ;;
3178 esac
3179 if test x"$insn" != x; then
3180  conftest_s="\
3181         .file 1 \"conftest.s\"
3182         .loc 1 3 0
3183         $insn"
3184  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
3185   gcc_cv_as_dwarf2_debug_line,
3186   [elf,2,11,0],, [$conftest_s],
3187   [if test x$gcc_cv_objdump != x \
3188    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
3189       | grep debug_line > /dev/null 2>&1; then
3190      gcc_cv_as_dwarf2_debug_line=yes
3191    fi])
3192
3193 # The .debug_line file table must be in the exact order that
3194 # we specified the files, since these indices are also used
3195 # by DW_AT_decl_file.  Approximate this test by testing if
3196 # the assembler bitches if the same index is assigned twice.
3197  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
3198   gcc_cv_as_dwarf2_file_buggy,,,
3199 [       .file 1 "foo.s"
3200         .file 1 "bar.s"])
3201
3202  if test $gcc_cv_as_dwarf2_debug_line = yes \
3203  && test $gcc_cv_as_dwarf2_file_buggy = no; then
3204         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
3205   [Define if your assembler supports dwarf2 .file/.loc directives,
3206    and preserves file table indices exactly as given.])
3207  fi
3208
3209  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
3210   gcc_cv_as_gdwarf2_flag,
3211   [elf,2,11,0], [--gdwarf2], [$insn],,
3212   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
3213 [Define if your assembler supports the --gdwarf2 option.])])
3214
3215  gcc_GAS_CHECK_FEATURE([--gstabs option],
3216   gcc_cv_as_gstabs_flag,
3217   [elf,2,11,0], [--gstabs], [$insn],
3218   [# The native Solaris 9/Intel assembler doesn't understand --gstabs
3219    # and warns about it, but still exits successfully.  So check for
3220    # this.
3221    if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
3222    then :
3223    else gcc_cv_as_gstabs_flag=yes
3224    fi],
3225   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
3226 [Define if your assembler supports the --gstabs option.])])
3227
3228  gcc_GAS_CHECK_FEATURE([--debug-prefix-map option],
3229   gcc_cv_as_debug_prefix_map_flag,
3230   [2,18,0], [--debug-prefix-map /a=/b], [$insn],,
3231   [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1,
3232 [Define if your assembler supports the --debug-prefix-map option.])])
3233 fi
3234
3235 gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment,
3236  ,,
3237 [.lcomm bar,4,16],,
3238 [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
3239   [Define if your assembler supports .lcomm with an alignment field.])])
3240
3241 AC_CACHE_CHECK([assembler for tolerance to line number 0],
3242  [gcc_cv_as_line_zero],
3243  [gcc_cv_as_line_zero=no
3244   if test $in_tree_gas = yes; then
3245     gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes])
3246   elif test "x$gcc_cv_as" != x; then
3247     { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s
3248     if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) &&
3249        test "x`cat conftest.out`" = x
3250     then
3251       gcc_cv_as_line_zero=yes
3252     else
3253       echo "configure: failed program was" >&AS_MESSAGE_LOG_FD
3254       cat conftest.s >&AS_MESSAGE_LOG_FD
3255       echo "configure: error output was" >&AS_MESSAGE_LOG_FD
3256       cat conftest.out >&AS_MESSAGE_LOG_FD
3257     fi
3258     rm -f conftest.o conftest.s conftest.out
3259   fi])
3260 if test "x$gcc_cv_as_line_zero" = xyes; then
3261   AC_DEFINE([HAVE_AS_LINE_ZERO], 1,
3262 [Define if the assembler won't complain about a line such as # 0 "" 2.])
3263 fi
3264
3265 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
3266 gcc_cv_ld_eh_frame_hdr=no
3267 if test $in_tree_ld = yes ; then
3268   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
3269      && test $in_tree_ld_is_elf = yes; then
3270     gcc_cv_ld_eh_frame_hdr=yes
3271   fi
3272 elif test x$gcc_cv_ld != x; then
3273         # Check if linker supports --eh-frame-hdr option
3274         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
3275                 gcc_cv_ld_eh_frame_hdr=yes
3276         fi
3277 fi
3278 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
3279 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
3280         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
3281 [Define if your linker supports --eh-frame-hdr option.])
3282 fi
3283 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
3284
3285 AC_MSG_CHECKING(linker position independent executable support)
3286 gcc_cv_ld_pie=no
3287 if test $in_tree_ld = yes ; then
3288   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
3289      && test $in_tree_ld_is_elf = yes; then
3290     gcc_cv_ld_pie=yes
3291   fi
3292 elif test x$gcc_cv_ld != x; then
3293         # Check if linker supports -pie option
3294         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
3295                 gcc_cv_ld_pie=yes
3296         fi
3297 fi
3298 if test x"$gcc_cv_ld_pie" = xyes; then
3299         AC_DEFINE(HAVE_LD_PIE, 1,
3300 [Define if your linker supports -pie option.])
3301 fi
3302 AC_MSG_RESULT($gcc_cv_ld_pie)
3303
3304 AC_MSG_CHECKING(linker EH-compatible garbage collection of sections)
3305 gcc_cv_ld_eh_gc_sections=no
3306 if test $in_tree_ld = yes ; then
3307   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \
3308      && test $in_tree_ld_is_elf = yes; then
3309     gcc_cv_ld_eh_gc_sections=yes
3310   fi
3311 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
3312   cat > conftest.s <<EOF
3313         .section        .text
3314 .globl _start
3315         .type _start, @function
3316 _start:
3317         .long foo
3318         .size _start, .-_start
3319         .section        .text.foo,"ax",@progbits
3320         .type foo, @function
3321 foo:
3322         .long 0
3323         .size foo, .-foo
3324         .section        .gcc_except_table.foo,"a",@progbits
3325 .L0:
3326         .long 0
3327         .section        .eh_frame,"a",@progbits
3328         .long .L0
3329 EOF
3330   if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3331     if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3332          | grep "gc-sections option ignored" > /dev/null; then
3333       gcc_cv_ld_eh_gc_sections=no
3334     elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3335       gcc_cv_ld_eh_gc_sections=yes
3336       # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
3337       if test x$gcc_cv_as_comdat_group != xyes; then
3338         gcc_cv_ld_eh_gc_sections=no
3339         cat > conftest.s <<EOF
3340         .section        .text
3341 .globl _start
3342         .type _start, @function
3343 _start:
3344         .long foo
3345         .size _start, .-_start
3346         .section        .gnu.linkonce.t.foo,"ax",@progbits
3347         .type foo, @function
3348 foo:
3349         .long 0
3350         .size foo, .-foo
3351         .section        .gcc_except_table.foo,"a",@progbits
3352 .L0:
3353         .long 0
3354         .section        .eh_frame,"a",@progbits
3355         .long .L0
3356 EOF
3357         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
3358           if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
3359                | grep "gc-sections option ignored" > /dev/null; then
3360             gcc_cv_ld_eh_gc_sections=no
3361           elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
3362             gcc_cv_ld_eh_gc_sections=yes
3363           fi
3364         fi
3365       fi
3366     fi
3367   fi
3368   rm -f conftest.s conftest.o conftest
3369 fi
3370 case "$target" in
3371   hppa*-*-linux*)
3372     # ??? This apparently exposes a binutils bug with PC-relative relocations.
3373     gcc_cv_ld_eh_gc_sections=no
3374     ;;
3375 esac
3376 if test x$gcc_cv_ld_eh_gc_sections = xyes; then
3377         AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
3378   [Define if your linker supports garbage collection of
3379    sections in presence of EH frames.])
3380 fi
3381 AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections)
3382
3383 # --------
3384 # UNSORTED
3385 # --------
3386
3387 AC_CACHE_CHECK(linker --as-needed support,
3388 gcc_cv_ld_as_needed,
3389 [gcc_cv_ld_as_needed=no
3390 if test $in_tree_ld = yes ; then
3391   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
3392      && test $in_tree_ld_is_elf = yes; then
3393     gcc_cv_ld_as_needed=yes
3394   fi
3395 elif test x$gcc_cv_ld != x; then
3396         # Check if linker supports --as-needed and --no-as-needed options
3397         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
3398                 gcc_cv_ld_as_needed=yes
3399         fi
3400 fi
3401 ])
3402 if test x"$gcc_cv_ld_as_needed" = xyes; then
3403         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
3404 [Define if your linker supports --as-needed and --no-as-needed options.])
3405 fi
3406
3407 case "$target:$tm_file" in
3408   powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
3409     AC_CACHE_CHECK(linker support for omitting dot symbols,
3410     gcc_cv_ld_no_dot_syms,
3411     [gcc_cv_ld_no_dot_syms=no
3412     if test $in_tree_ld = yes ; then
3413       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
3414         gcc_cv_ld_no_dot_syms=yes
3415       fi
3416     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
3417       cat > conftest1.s <<EOF
3418         .text
3419         bl .foo
3420 EOF
3421       cat > conftest2.s <<EOF
3422         .section ".opd","aw"
3423         .align 3
3424         .globl foo
3425         .type foo,@function
3426 foo:
3427         .quad .LEfoo,.TOC.@tocbase,0
3428         .text
3429 .LEfoo:
3430         blr
3431         .size foo,.-.LEfoo
3432 EOF
3433       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3434          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3435          && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3436         gcc_cv_ld_no_dot_syms=yes
3437       fi
3438       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3439     fi
3440     ])
3441     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3442       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3443     [Define if your PowerPC64 linker only needs function descriptor syms.])
3444     fi
3445     ;;
3446 esac
3447
3448 AC_CACHE_CHECK(linker --sysroot support,
3449   gcc_cv_ld_sysroot,
3450   [gcc_cv_ld_sysroot=no
3451   if test $in_tree_ld = yes ; then
3452       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3453         gcc_cv_ld_sysroot=yes
3454       fi
3455   elif test x$gcc_cv_ld != x; then
3456     if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3457       gcc_cv_ld_sysroot=yes
3458     fi
3459   fi])
3460 if test x"$gcc_cv_ld_sysroot" = xyes; then
3461   AC_DEFINE(HAVE_LD_SYSROOT, 1,
3462   [Define if your linker supports --sysroot.])
3463 fi
3464
3465 if test x$with_sysroot = x && test x$host = x$target \
3466    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \
3467    && test "$prefix" != "NONE"; then
3468   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3469 [Define to PREFIX/include if cpp should also search that directory.])
3470 fi
3471
3472 # Test for stack protector support in target C library.
3473 AC_CACHE_CHECK(__stack_chk_fail in target C library,
3474       gcc_cv_libc_provides_ssp,
3475       [gcc_cv_libc_provides_ssp=no
3476     case "$target" in
3477        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
3478       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3479         if test "x$with_sysroot" = x; then
3480           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3481         elif test "x$with_build_sysroot" != "x"; then
3482           glibc_header_dir="${with_build_sysroot}/usr/include"
3483         elif test "x$with_sysroot" = xyes; then
3484           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3485         else
3486           glibc_header_dir="${with_sysroot}/usr/include"
3487         fi
3488       else
3489         glibc_header_dir=/usr/include
3490       fi
3491       # glibc 2.4 and later provides __stack_chk_fail and
3492       # either __stack_chk_guard, or TLS access to stack guard canary.
3493       if test -f $glibc_header_dir/features.h \
3494          && $EGREP '^@<:@       @:>@*#[         ]*define[       ]+__GNU_LIBRARY__[      ]+([1-9][0-9]|[6-9])' \
3495             $glibc_header_dir/features.h > /dev/null; then
3496         if $EGREP '^@<:@        @:>@*#[         ]*define[       ]+__GLIBC__[    ]+([1-9][0-9]|[3-9])' \
3497            $glibc_header_dir/features.h > /dev/null; then
3498           gcc_cv_libc_provides_ssp=yes
3499         elif $EGREP '^@<:@      @:>@*#[         ]*define[       ]+__GLIBC__[    ]+2' \
3500              $glibc_header_dir/features.h > /dev/null \
3501              && $EGREP '^@<:@   @:>@*#[         ]*define[       ]+__GLIBC_MINOR__[      ]+([1-9][0-9]|[4-9])' \
3502              $glibc_header_dir/features.h > /dev/null; then
3503           gcc_cv_libc_provides_ssp=yes
3504         elif $EGREP '^@<:@      @:>@*#[         ]*define[       ]+__UCLIBC__[   ]+1' \
3505              $glibc_header_dir/features.h > /dev/null && \
3506              test -f $glibc_header_dir/bits/uClibc_config.h && \
3507              $EGREP '^@<:@      @:>@*#[         ]*define[       ]+__UCLIBC_HAS_SSP__[   ]+1' \
3508              $glibc_header_dir/bits/uClibc_config.h > /dev/null; then
3509           gcc_cv_libc_provides_ssp=yes
3510         fi
3511       fi
3512         ;;
3513        *-*-gnu*)
3514          # Avoid complicated tests (see
3515          # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
3516          # simply assert that glibc does provide this, which is true for all
3517          # realistically usable GNU/Hurd configurations.
3518          gcc_cv_libc_provides_ssp=yes;;
3519        *-*-darwin*)
3520          AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
3521            [echo "no __stack_chk_fail on this target"])
3522         ;;
3523   *) gcc_cv_libc_provides_ssp=no ;;
3524     esac])
3525
3526 if test x$gcc_cv_libc_provides_ssp = xyes; then
3527   AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3528             [Define if your target C library provides stack protector support])
3529 fi
3530
3531 # Check if TFmode long double should be used by default or not.
3532 # Some glibc targets used DFmode long double, but with glibc 2.4
3533 # and later they can use TFmode.
3534 case "$target" in
3535   powerpc*-*-linux* | \
3536   powerpc*-*-gnu* | \
3537   sparc*-*-linux* | \
3538   s390*-*-linux* | \
3539   alpha*-*-linux*)
3540     AC_ARG_WITH(long-double-128,
3541 [  --with-long-double-128  Use 128-bit long double by default.],
3542       gcc_cv_target_ldbl128="$with_long_double_128",
3543       [gcc_cv_target_ldbl128=no
3544       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3545         if test "x$with_sysroot" = x; then
3546           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3547         elif test "x$with_build_sysroot" != "x"; then
3548           glibc_header_dir="${with_build_sysroot}/usr/include"
3549         elif test "x$with_sysroot" = xyes; then
3550           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3551         else
3552           glibc_header_dir="${with_sysroot}/usr/include"
3553         fi
3554       else
3555         glibc_header_dir=/usr/include
3556       fi
3557 changequote(,)dnl
3558       grep '^[  ]*#[    ]*define[       ][      ]*__LONG_DOUBLE_MATH_OPTIONAL' \
3559         $glibc_header_dir/bits/wordsize.h > /dev/null 2>&1 \
3560       && gcc_cv_target_ldbl128=yes
3561 changequote([,])dnl
3562       ])
3563     ;;
3564 esac
3565 if test x$gcc_cv_target_ldbl128 = xyes; then
3566   AC_DEFINE(TARGET_DEFAULT_LONG_DOUBLE_128, 1,
3567             [Define if TFmode long double should be the default])
3568 fi
3569
3570 # Find out what GC implementation we want, or may, use.
3571 AC_ARG_WITH(gc,
3572 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
3573                           with the compiler],
3574 [case "$withval" in
3575   page)
3576     GGC=ggc-$withval
3577     ;;
3578   zone)
3579     GGC=ggc-$withval
3580     AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3581     ;;
3582   *)
3583     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3584     ;;
3585 esac],
3586 [GGC=ggc-page])
3587 AC_SUBST(GGC)
3588 echo "Using $GGC for garbage collection."
3589
3590 # Use the system's zlib library.
3591 zlibdir=-L../zlib
3592 zlibinc="-I\$(srcdir)/../zlib"
3593 AC_ARG_WITH(system-zlib,
3594 [  --with-system-zlib      use installed libz],
3595 zlibdir=
3596 zlibinc=
3597 )
3598 AC_SUBST(zlibdir)
3599 AC_SUBST(zlibinc)
3600
3601 dnl Very limited version of automake's enable-maintainer-mode
3602
3603 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3604   dnl maintainer-mode is disabled by default
3605   AC_ARG_ENABLE(maintainer-mode,
3606 [  --enable-maintainer-mode
3607                           enable make rules and dependencies not useful
3608                           (and sometimes confusing) to the casual installer],
3609       maintainer_mode=$enableval,
3610       maintainer_mode=no)
3611
3612 AC_MSG_RESULT($maintainer_mode)
3613
3614 if test "$maintainer_mode" = "yes"; then
3615   MAINT=''
3616 else
3617   MAINT='#'
3618 fi
3619 AC_SUBST(MAINT)dnl
3620
3621 # --------------
3622 # Language hooks
3623 # --------------
3624
3625 # Make empty files to contain the specs and options for each language.
3626 # Then add #include lines to for a compiler that has specs and/or options.
3627
3628 subdirs=
3629 lang_opt_files=
3630 lang_specs_files=
3631 lang_tree_files=
3632 # These (without "all_") are set in each config-lang.in.
3633 # `language' must be a single word so is spelled singularly.
3634 all_languages=
3635 all_compilers=
3636 all_outputs='Makefile gccbug'
3637 # List of language makefile fragments.
3638 all_lang_makefrags=
3639 # List of language subdirectory makefiles.  Deprecated.
3640 all_lang_makefiles=
3641 # Additional files for gengtype
3642 all_gtfiles="$target_gtfiles"
3643
3644 # These are the languages that are set in --enable-languages,
3645 # and are available in the GCC tree.
3646 all_selected_languages=
3647
3648 # Add the language fragments.
3649 # Languages are added via two mechanisms.  Some information must be
3650 # recorded in makefile variables, these are defined in config-lang.in.
3651 # We accumulate them and plug them into the main Makefile.
3652 # The other mechanism is a set of hooks for each of the main targets
3653 # like `clean', `install', etc.
3654
3655 language_hooks="Make-hooks"
3656
3657 for lang in ${srcdir}/*/config-lang.in
3658 do
3659 changequote(,)dnl
3660         test "$lang" = "${srcdir}/*/config-lang.in" && continue
3661
3662         lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
3663         if test "x$lang_alias" = x
3664         then
3665               echo "$lang doesn't set \$language." 1>&2
3666               exit 1
3667         fi
3668         subdir="`echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
3669         subdirs="$subdirs $subdir"
3670
3671         # $gcc_subdir is where the gcc integration files are to be found
3672         # for a language, both for internal compiler purposes (compiler
3673         # sources implementing front-end to GCC tree converters), and for
3674         # build infrastructure purposes (Make-lang.in, etc.)
3675         #
3676         # This will be <subdir> (relative to $srcdir) if a line like
3677         # gcc_subdir="<subdir>" or gcc_subdir=<subdir>
3678         # is found in <langdir>/config-lang.in, and will remain <langdir>
3679         # otherwise.
3680         #
3681         # Except for the language alias (fetched above), the regular
3682         # "config-lang.in" contents are always retrieved from $gcc_subdir,
3683         # so a <langdir>/config-lang.in setting gcc_subdir typically sets
3684         # only this and the language alias.
3685
3686         gcc_subdir=`sed -n -e 's,^gcc_subdir=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^gcc_subdir=\([^   ]*\).*$,\1,p' $lang`
3687         if [ "$gcc_subdir" = "" ]; then
3688            gcc_subdir="$subdir"
3689         fi
3690
3691         case ",$enable_languages," in
3692         *,$lang_alias,*)
3693             all_selected_languages="$all_selected_languages $lang_alias"
3694             if test -f $srcdir/$gcc_subdir/lang-specs.h; then
3695                 lang_specs_files="$lang_specs_files $srcdir/$gcc_subdir/lang-specs.h"
3696             fi
3697             ;;
3698         esac
3699 changequote([,])dnl
3700
3701         language=
3702         boot_language=
3703         compilers=
3704         outputs=
3705         gtfiles=
3706         subdir_requires=
3707         . ${srcdir}/$gcc_subdir/config-lang.in
3708         if test "x$language" = x
3709         then
3710                 echo "${srcdir}/$gcc_subdir/config-lang.in doesn't set \$language." 1>&2
3711                 exit 1
3712         fi
3713
3714         ok=:
3715         case ",$enable_languages," in
3716                 *,$lang_alias,*) ;;
3717                 *)
3718                         for i in $subdir_requires; do
3719                                 test -f "${srcdir}/$i/config-lang.in" && continue
3720                                 ok=false
3721                                 break
3722                         done
3723                 ;;
3724         esac
3725         $ok || continue
3726
3727         all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$gcc_subdir/Make-lang.in"
3728         if test -f $srcdir/$gcc_subdir/lang.opt; then
3729             lang_opt_files="$lang_opt_files $srcdir/$gcc_subdir/lang.opt"
3730         fi
3731         if test -f $srcdir/$gcc_subdir/$subdir-tree.def; then
3732             lang_tree_files="$lang_tree_files $srcdir/$gcc_subdir/$subdir-tree.def"
3733         fi
3734         if test -f ${srcdir}/$gcc_subdir/Makefile.in
3735                 then all_lang_makefiles="$gcc_subdir/Makefile"
3736         fi
3737         all_languages="$all_languages $language"
3738         all_compilers="$all_compilers $compilers"
3739         all_outputs="$all_outputs $outputs"
3740         all_gtfiles="$all_gtfiles [[$subdir]] $gtfiles"
3741 done
3742
3743 # Pick up gtfiles for c
3744 gtfiles=
3745 . ${srcdir}/c-config-lang.in
3746 all_gtfiles="$all_gtfiles [[c]] $gtfiles"
3747
3748 check_languages=
3749 for language in $all_selected_languages
3750 do
3751         check_languages="$check_languages check-$language"
3752 done
3753
3754 # We link each language in with a set of hooks, reached indirectly via
3755 # lang.${target}.  Only do so for selected languages.
3756
3757 rm -f Make-hooks
3758 touch Make-hooks
3759 target_list="all.cross start.encap rest.encap tags \
3760         install-common install-man install-info install-pdf dvi pdf \
3761         html uninstall info man srcextra srcman srcinfo \
3762         mostlyclean clean distclean maintainer-clean"
3763
3764 for t in $target_list
3765 do
3766         x=
3767         for lang in $all_selected_languages
3768         do
3769                 x="$x $lang.$t"
3770         done
3771         echo "lang.$t: $x" >> Make-hooks
3772 done
3773
3774 # --------
3775 # UNSORTED
3776 # --------
3777
3778 # Create .gdbinit.
3779
3780 echo "dir ." > .gdbinit
3781 echo "dir ${srcdir}" >> .gdbinit
3782 if test x$gdb_needs_out_file_path = xyes
3783 then
3784         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3785 fi
3786 if test "x$subdirs" != x; then
3787         for s in $subdirs
3788         do
3789                 echo "dir ${srcdir}/$s" >> .gdbinit
3790         done
3791 fi
3792 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3793
3794 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
3795 AC_SUBST(gcc_tooldir)
3796 AC_SUBST(dollar)
3797
3798 # Find a directory in which to install a shared libgcc.
3799
3800 AC_ARG_ENABLE(version-specific-runtime-libs,
3801 [  --enable-version-specific-runtime-libs
3802                           specify that runtime libraries should be
3803                           installed in a compiler-specific directory])
3804
3805 AC_ARG_WITH(slibdir,
3806 [  --with-slibdir=DIR      shared libraries in DIR [[LIBDIR]]],
3807 slibdir="$with_slibdir",
3808 if test "${enable_version_specific_runtime_libs+set}" = set; then
3809   slibdir='$(libsubdir)'
3810 elif test "$host" != "$target"; then
3811   slibdir='$(build_tooldir)/lib'
3812 else
3813   slibdir='$(libdir)'
3814 fi)
3815 AC_SUBST(slibdir)
3816
3817 AC_ARG_WITH(datarootdir,
3818 [  --with-datarootdir=DIR  Use DIR as the data root [[PREFIX/share]]],
3819 datarootdir="\${prefix}/$with_datarootdir",
3820 datarootdir='$(prefix)/share')
3821 AC_SUBST(datarootdir)
3822
3823 AC_ARG_WITH(docdir,
3824 [  --with-docdir=DIR       Install documentation in DIR [[DATAROOTDIR]]],
3825 docdir="\${prefix}/$with_docdir",
3826 docdir='$(datarootdir)')
3827 AC_SUBST(docdir)
3828
3829 AC_ARG_WITH(htmldir,
3830 [  --with-htmldir=DIR      html documentation in in DIR [[DOCDIR]]],
3831 htmldir="\${prefix}/$with_htmldir",
3832 htmldir='$(docdir)')
3833 AC_SUBST(htmldir)
3834
3835 # Substitute configuration variables
3836 AC_SUBST(subdirs)
3837 AC_SUBST(srcdir)
3838 AC_SUBST(all_compilers)
3839 AC_SUBST(all_gtfiles)
3840 AC_SUBST(all_lang_makefrags)
3841 AC_SUBST(all_lang_makefiles)
3842 AC_SUBST(all_languages)
3843 AC_SUBST(all_selected_languages)
3844 AC_SUBST(build_exeext)
3845 AC_SUBST(build_install_headers_dir)
3846 AC_SUBST(build_xm_file_list)
3847 AC_SUBST(build_xm_include_list)
3848 AC_SUBST(build_xm_defines)
3849 AC_SUBST(build_file_translate)
3850 AC_SUBST(check_languages)
3851 AC_SUBST(cpp_install_dir)
3852 AC_SUBST(xmake_file)
3853 AC_SUBST(tmake_file)
3854 AC_SUBST(extra_gcc_objs)
3855 AC_SUBST(extra_headers_list)
3856 AC_SUBST(extra_objs)
3857 AC_SUBST(extra_parts)
3858 AC_SUBST(extra_passes)
3859 AC_SUBST(extra_programs)
3860 AC_SUBST(float_h_file)
3861 AC_SUBST(gcc_config_arguments)
3862 AC_SUBST(gcc_gxx_include_dir)
3863 AC_SUBST(host_exeext)
3864 AC_SUBST(host_xm_file_list)
3865 AC_SUBST(host_xm_include_list)
3866 AC_SUBST(host_xm_defines)
3867 AC_SUBST(out_host_hook_obj)
3868 AC_SUBST(install)
3869 AC_SUBST(lang_opt_files)
3870 AC_SUBST(lang_specs_files)
3871 AC_SUBST(lang_tree_files)
3872 AC_SUBST(local_prefix)
3873 AC_SUBST(md_file)
3874 AC_SUBST(objc_boehm_gc)
3875 AC_SUBST(out_file)
3876 AC_SUBST(out_object_file)
3877 AC_SUBST(thread_file)
3878 AC_SUBST(tm_file_list)
3879 AC_SUBST(tm_include_list)
3880 AC_SUBST(tm_defines)
3881 AC_SUBST(tm_p_file_list)
3882 AC_SUBST(tm_p_include_list)
3883 AC_SUBST(xm_file_list)
3884 AC_SUBST(xm_include_list)
3885 AC_SUBST(xm_defines)
3886 AC_SUBST(c_target_objs)
3887 AC_SUBST(cxx_target_objs)
3888 AC_SUBST(fortran_target_objs)
3889 AC_SUBST(target_cpu_default)
3890
3891 AC_SUBST_FILE(language_hooks)
3892
3893 # Echo link setup.
3894 if test x${build} = x${host} ; then
3895   if test x${host} = x${target} ; then
3896     echo "Links are now set up to build a native compiler for ${target}." 1>&2
3897   else
3898     echo "Links are now set up to build a cross-compiler" 1>&2
3899     echo " from ${host} to ${target}." 1>&2
3900   fi
3901 else
3902   if test x${host} = x${target} ; then
3903     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3904     echo " for ${target}." 1>&2
3905   else
3906     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3907     echo " from ${host} to ${target}." 1>&2
3908   fi
3909 fi
3910
3911 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3912 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3913
3914 AC_ARG_VAR(PPLLIBS,[How to link PPL])
3915 AC_ARG_VAR(PPLINC,[How to find PPL include files])
3916
3917 AC_ARG_VAR(CLOOGLIBS,[How to link CLOOG])
3918 AC_ARG_VAR(CLOOGINC,[How to find CLOOG include files])
3919 if test "x${CLOOGLIBS}" != "x" ; then
3920    AC_DEFINE(HAVE_cloog, 1, [Define if cloog is in use.])
3921 fi
3922
3923 # Configure the subdirectories
3924 # AC_CONFIG_SUBDIRS($subdirs)
3925
3926 # Create the Makefile
3927 # and configure language subdirectories
3928 AC_CONFIG_FILES($all_outputs)
3929
3930 AC_CONFIG_COMMANDS([default],
3931 [
3932 case ${CONFIG_HEADERS} in
3933   *auto-host.h:config.in*)
3934   echo > cstamp-h ;;
3935 esac
3936 # Make sure all the subdirs exist.
3937 for d in $subdirs doc build
3938 do
3939     test -d $d || mkdir $d
3940 done
3941 ],
3942 [subdirs='$subdirs'])
3943 AC_OUTPUT