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
   5 # 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 2, 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 COPYING.  If not, write to the Free
  21 #Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  22 #02110-1301, USA.
  23
  24 # --------------------------------
  25 # Initialization and sanity checks
  26 # --------------------------------
  27
  28 AC_PREREQ(2.59)
  29 AC_INIT
  30 AC_CONFIG_SRCDIR(tree.c)
  31 AC_CONFIG_HEADER(auto-host.h:config.in)
  32
  33 gcc_version=`cat $srcdir/BASE-VER`
  34
  35 # Determine the host, build, and target systems
  36 AC_CANONICAL_BUILD
  37 AC_CANONICAL_HOST
  38 AC_CANONICAL_TARGET
  39
  40 # Determine the noncanonical target name, for directory use.
  41 ACX_NONCANONICAL_TARGET
  42
  43 # Determine the target- and build-specific subdirectories
  44 GCC_TOPLEV_SUBDIRS
  45
  46 # Set program_transform_name
  47 AC_ARG_PROGRAM
  48
  49 # Check for bogus environment variables.
  50 # Test if LIBRARY_PATH contains the notation for the current directory
  51 # since this would lead to problems installing/building glibc.
  52 # LIBRARY_PATH contains the current directory if one of the following
  53 # is true:
  54 # - one of the terminals (":" and ";") is the first or last sign
  55 # - two terminals occur directly after each other
  56 # - the path contains an element with a dot in it
  57 AC_MSG_CHECKING(LIBRARY_PATH variable)
  58 changequote(,)dnl
  59 case ${LIBRARY_PATH} in
  60   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  61     library_path_setting="contains current directory"
  62     ;;
  63   *)
  64     library_path_setting="ok"
  65     ;;
  66 esac
  67 changequote([,])dnl
  68 AC_MSG_RESULT($library_path_setting)
  69 if test "$library_path_setting" != "ok"; then
  70 AC_MSG_ERROR([
  71 *** LIBRARY_PATH shouldn't contain the current directory when
  72 *** building gcc. Please change the environment variable
  73 *** and run configure again.])
  74 fi
  75
  76 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  77 # since this would lead to problems installing/building glibc.
  78 # GCC_EXEC_PREFIX contains the current directory if one of the following
  79 # is true:
  80 # - one of the terminals (":" and ";") is the first or last sign
  81 # - two terminals occur directly after each other
  82 # - the path contains an element with a dot in it
  83 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  84 changequote(,)dnl
  85 case ${GCC_EXEC_PREFIX} in
  86   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  87     gcc_exec_prefix_setting="contains current directory"
  88     ;;
  89   *)
  90     gcc_exec_prefix_setting="ok"
  91     ;;
  92 esac
  93 changequote([,])dnl
  94 AC_MSG_RESULT($gcc_exec_prefix_setting)
  95 if test "$gcc_exec_prefix_setting" != "ok"; then
  96 AC_MSG_ERROR([
  97 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  98 *** building gcc. Please change the environment variable
  99 *** and run configure again.])
 100 fi
 101
 102 # -----------
 103 # Directories
 104 # -----------
 105
 106 # Specify the local prefix
 107 local_prefix=
 108 AC_ARG_WITH(local-prefix,
 109 [  --with-local-prefix=DIR specifies directory to put local include],
 110 [case "${withval}" in
 111 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 112 no)     ;;
 113 *)      local_prefix=$with_local_prefix ;;
 114 esac])
 115
 116 # Default local prefix if it is empty
 117 if test x$local_prefix = x; then
 118         local_prefix=/usr/local
 119 fi
 120
 121 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 122 # passed in by the toplevel make and thus we'd get different behavior
 123 # depending on where we built the sources.
 124 gcc_gxx_include_dir=
 125 # Specify the g++ header file directory
 126 AC_ARG_WITH(gxx-include-dir,
 127 [  --with-gxx-include-dir=DIR
 128                           specifies directory to put g++ header files],
 129 [case "${withval}" in
 130 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 131 no)     ;;
 132 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 133 esac])
 134
 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='${libsubdir}/include/c++'
 138   else
 139     libstdcxx_incdir='c++/$(version)'
 140 changequote(<<, >>)dnl
 141     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 142 changequote([, ])dnl
 143   fi
 144 fi
 145
 146 AC_ARG_WITH(cpp_install_dir,
 147 [  --with-cpp-install-dir=DIR
 148                           install the user visible C preprocessor in DIR
 149                           (relative to PREFIX) as well as PREFIX/bin],
 150 [if test x$withval = xyes; then
 151   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 152 elif test x$withval != xno; then
 153   cpp_install_dir=$withval
 154 fi])
 155
 156 # We would like to our source tree to be readonly.  However when releases or
 157 # pre-releases are generated, the flex/bison generated files as well as the
 158 # various formats of manuals need to be included along with the rest of the
 159 # sources.  Therefore we have --enable-generated-files-in-srcdir to do
 160 # just that.
 161
 162 AC_MSG_CHECKING([whether to place generated files in the source directory])
 163   dnl generated-files-in-srcdir is disabled by default
 164   AC_ARG_ENABLE(generated-files-in-srcdir,
 165 [  --enable-generated-files-in-srcdir
 166                           put copies of generated files in source dir
 167                           intended for creating source tarballs for users
 168                           without texinfo bison or flex.],
 169       generated_files_in_srcdir=$enableval,
 170       generated_files_in_srcdir=no)
 171
 172 AC_MSG_RESULT($generated_files_in_srcdir)
 173
 174 if test "$generated_files_in_srcdir" = "yes"; then
 175   GENINSRC=''
 176 else
 177   GENINSRC='#'
 178 fi
 179 AC_SUBST(GENINSRC)
 180
 181 # -------------------
 182 # Find default linker
 183 # -------------------
 184
 185 # With GNU ld
 186 AC_ARG_WITH(gnu-ld,
 187 [  --with-gnu-ld           arrange to work with GNU ld.],
 188 gnu_ld_flag="$with_gnu_ld",
 189 gnu_ld_flag=no)
 190
 191 # With pre-defined ld
 192 AC_ARG_WITH(ld,
 193 [  --with-ld               arrange to use the specified ld (full pathname)],
 194 DEFAULT_LINKER="$with_ld")
 195 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 196   if test ! -x "$DEFAULT_LINKER"; then
 197     AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 198   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 199     gnu_ld_flag=yes
 200   fi
 201   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 202         [Define to enable the use of a default linker.])
 203 fi
 204
 205 AC_MSG_CHECKING([whether a default linker was specified])
 206 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 207   if test x"$gnu_ld_flag" = x"no"; then
 208     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 209   else
 210     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 211   fi
 212 else
 213   AC_MSG_RESULT(no)
 214 fi
 215
 216 # With demangler in GNU ld
 217 AC_ARG_WITH(demangler-in-ld,
 218 [  --with-demangler-in-ld  try to use demangler in GNU ld.],
 219 demangler_in_ld="$with_demangler_in_ld",
 220 demangler_in_ld=no)
 221
 222 # ----------------------
 223 # Find default assembler
 224 # ----------------------
 225
 226 # With GNU as
 227 AC_ARG_WITH(gnu-as,
 228 [  --with-gnu-as           arrange to work with GNU as],
 229 gas_flag="$with_gnu_as",
 230 gas_flag=no)
 231
 232 AC_ARG_WITH(as,
 233 [  --with-as               arrange to use the specified as (full pathname)],
 234 DEFAULT_ASSEMBLER="$with_as")
 235 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 236   if test ! -x "$DEFAULT_ASSEMBLER"; then
 237     AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 238   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 239     gas_flag=yes
 240   fi
 241   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 242         [Define to enable the use of a default assembler.])
 243 fi
 244
 245 AC_MSG_CHECKING([whether a default assembler was specified])
 246 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 247   if test x"$gas_flag" = x"no"; then
 248     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 249   else
 250     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 251   fi
 252 else
 253   AC_MSG_RESULT(no)
 254 fi
 255
 256 # ---------------
 257 # Find C compiler
 258 # ---------------
 259
 260 # If a non-executable a.out is present (e.g. created by GNU as above even if
 261 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
 262 # file, even when creating an executable, so an execution test fails.
 263 # Remove possible default executable files to avoid this.
 264 #
 265 # FIXME: This really belongs into AC_PROG_CC and can be removed once
 266 # Autoconf includes it.
 267 rm -f a.out a.exe b.out
 268
 269 # Find the native compiler
 270 AC_PROG_CC
 271 AM_PROG_CC_C_O
 272 # autoconf is lame and doesn't give us any substitution variable for this.
 273 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 274   NO_MINUS_C_MINUS_O=yes
 275 else
 276   OUTPUT_OPTION='-o $@'
 277 fi
 278 AC_SUBST(NO_MINUS_C_MINUS_O)
 279 AC_SUBST(OUTPUT_OPTION)
 280
 281 # -------------------------
 282 # Check C compiler features
 283 # -------------------------
 284
 285 AC_PROG_CPP
 286 AC_C_INLINE
 287
 288 # sizeof(char) is 1 by definition.
 289 AC_CHECK_SIZEOF(void *)
 290 AC_CHECK_SIZEOF(short)
 291 AC_CHECK_SIZEOF(int)
 292 AC_CHECK_SIZEOF(long)
 293 AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)])
 294 AC_CHECK_TYPES([__int64], [AC_CHECK_SIZEOF(__int64)])
 295
 296 # ---------------------
 297 # Warnings and checking
 298 # ---------------------
 299
 300 # Check $CC warning features (if it's GCC).
 301 # We want to use -pedantic, but we don't want warnings about
 302 # * 'long long'
 303 # * variadic macros
 304 # So, we only use -pedantic if we can disable those warnings.
 305
 306 AC_CACHE_CHECK(
 307   [whether ${CC} accepts -Wno-long-long],
 308   [ac_cv_prog_cc_w_no_long_long],
 309   [save_CFLAGS="$CFLAGS"
 310   CFLAGS="-Wno-long-long"
 311   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 312                     [ac_cv_prog_cc_w_no_long_long=yes],
 313                     [ac_cv_prog_cc_w_no_long_long=no])
 314   CFLAGS="$save_CFLAGS"
 315   ])
 316
 317 AC_CACHE_CHECK(
 318   [whether ${CC} accepts -Wno-variadic-macros],
 319   [ac_cv_prog_cc_w_no_variadic_macros],
 320   [save_CFLAGS="$CFLAGS"
 321   CFLAGS="-Wno-variadic-macros"
 322   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 323                     [ac_cv_prog_cc_w_no_variadic_macros=yes],
 324                     [ac_cv_prog_cc_w_no_variadic_macros=no])
 325   CFLAGS="$save_CFLAGS"
 326   ])
 327
 328 strict1_warn=
 329 if test $ac_cv_prog_cc_w_no_long_long = yes \
 330    && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
 331   strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
 332 fi
 333
 334 # Add -Wold-style-definition if it's accepted
 335 AC_CACHE_CHECK(
 336   [whether ${CC} accepts -Wold-style-definition],
 337   [ac_cv_prog_cc_w_old_style_definition],
 338   [save_CFLAGS="$CFLAGS"
 339   CFLAGS="-Wold-style-definition"
 340   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 341                     [ac_cv_prog_cc_w_old_style_definition=yes],
 342                     [ac_cv_prog_cc_w_old_style_definition=no])
 343   CFLAGS="$save_CFLAGS"
 344   ])
 345 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
 346   strict1_warn="${strict1_warn} -Wold-style-definition"
 347 fi
 348
 349 # Add -Wmissing-format-attribute if it's accepted
 350 AC_CACHE_CHECK(
 351   [whether ${CC} accepts -Wmissing-format-attribute],
 352   [ac_cv_prog_cc_w_missing_format_attribute],
 353   [save_CFLAGS="$CFLAGS"
 354   CFLAGS="-Wmissing-format-attribute"
 355   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 356                     [ac_cv_prog_cc_w_missing_format_attribute=yes],
 357                     [ac_cv_prog_cc_w_missing_format_attribute=no])
 358   CFLAGS="$save_CFLAGS"
 359   ])
 360 if test $ac_cv_prog_cc_w_missing_format_attribute = yes ; then
 361   strict1_warn="${strict1_warn} -Wmissing-format-attribute"
 362 fi
 363
 364 # Enable -Werror, period.
 365 AC_ARG_ENABLE(werror_always,
 366 [  --enable-werror-always         enable -Werror always], [],
 367 [enable_werror_always=no])
 368 if test x${enable_werror_always} = xyes ; then
 369   strict1_warn="${strict1_warn} -Werror"
 370   WERROR=-Werror
 371 fi
 372
 373 AC_SUBST(strict1_warn)
 374
 375 # If the native compiler is GCC, we can enable warnings even in stage1.
 376 # That's useful for people building cross-compilers, or just running a
 377 # quick `make'.
 378 warn_cflags=
 379 if test "x$GCC" = "xyes"; then
 380   warn_cflags='$(GCC_WARN_CFLAGS)'
 381 fi
 382 AC_SUBST(warn_cflags)
 383
 384 # Enable -Werror in bootstrap stage2 and later.
 385 is_release=
 386 if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then
 387   is_release=yes
 388 fi
 389 AC_ARG_ENABLE(werror,
 390 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
 391 [if test x$is_release = x ; then
 392   # Default to "yes" on development branches.
 393   enable_werror=yes
 394 else
 395   # Default to "no" on release branches.
 396   enable_werror=no
 397 fi])
 398 if test x$enable_werror = xyes ; then
 399   WERROR=-Werror
 400 fi
 401 AC_SUBST(WERROR)
 402
 403 # Enable expensive internal checks
 404 AC_ARG_ENABLE(checking,
 405 [  --enable-checking[=LIST]
 406                           enable expensive run-time checks.  With LIST,
 407                           enable only specific categories of checks.
 408                           Categories are: yes,no,all,none,release.
 409                           Flags are: assert,fold,gc,gcac,misc,
 410                           rtlflag,rtl,runtime,tree,valgrind.],
 411 [ac_checking_flags="${enableval}"],[
 412 # Determine the default checks.
 413 if test x$is_release = x ; then
 414   ac_checking_flags=yes
 415 else
 416   ac_checking_flags=release
 417 fi])
 418 ac_assert_checking=1
 419 ac_checking=
 420 ac_fold_checking=
 421 ac_gc_checking=
 422 ac_gc_always_collect=
 423 ac_rtl_checking=
 424 ac_rtlflag_checking=
 425 ac_runtime_checking=1
 426 ac_tree_checking=
 427 ac_valgrind_checking=
 428 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 429 for check in $ac_checking_flags
 430 do
 431         case $check in
 432         # these set all the flags to specific states
 433         yes)            ac_assert_checking=1 ; ac_checking=1 ;
 434                         ac_fold_checking= ; ac_gc_checking=1 ;
 435                         ac_gc_always_collect= ; ac_rtl_checking= ;
 436                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 437                         ac_tree_checking=1 ; ac_valgrind_checking= ;;
 438         no|none)        ac_assert_checking= ; ac_checking= ;
 439                         ac_fold_checking= ; ac_gc_checking= ;
 440                         ac_gc_always_collect= ; ac_rtl_checking= ;
 441                         ac_rtlflag_checking= ; ac_runtime_checking= ;
 442                         ac_tree_checking= ; ac_valgrind_checking= ;;
 443         all)            ac_assert_checking=1 ; ac_checking=1 ;
 444                         ac_fold_checking=1 ; ac_gc_checking=1 ;
 445                         ac_gc_always_collect=1 ; ac_rtl_checking=1 ;
 446                         ac_rtlflag_checking=1 ; ac_runtime_checking=1 ;
 447                         ac_tree_checking=1 ; ac_valgrind_checking= ;;
 448         release)        ac_assert_checking=1 ; ac_checking= ;
 449                         ac_fold_checking= ; ac_gc_checking= ;
 450                         ac_gc_always_collect= ; ac_rtl_checking= ;
 451                         ac_rtlflag_checking= ; ac_runtime_checking=1 ;
 452                         ac_tree_checking= ; ac_valgrind_checking= ;;
 453         # these enable particular checks
 454         assert)         ac_assert_checking=1 ;;
 455         fold)           ac_fold_checking=1 ;;
 456         gc)             ac_gc_checking=1 ;;
 457         gcac)           ac_gc_always_collect=1 ;;
 458         misc)           ac_checking=1 ;;
 459         rtl)            ac_rtl_checking=1 ;;
 460         rtlflag)        ac_rtlflag_checking=1 ;;
 461         runtime)        ac_runtime_checking=1 ;;
 462         tree)           ac_tree_checking=1 ;;
 463         valgrind)       ac_valgrind_checking=1 ;;
 464         *)      AC_MSG_ERROR(unknown check category $check) ;;
 465         esac
 466 done
 467 IFS="$ac_save_IFS"
 468
 469 nocommon_flag=""
 470 if test x$ac_checking != x ; then
 471   AC_DEFINE(ENABLE_CHECKING, 1,
 472 [Define if you want more run-time sanity checks.  This one gets a grab
 473    bag of miscellaneous but relatively cheap checks.])
 474   nocommon_flag=-fno-common
 475 fi
 476 AC_SUBST(nocommon_flag)
 477 if test x$ac_assert_checking != x ; then
 478   AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
 479 [Define if you want assertions enabled.  This is a cheap check.])
 480 fi
 481 GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING)
 482 if test x$ac_runtime_checking != x ; then
 483   AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1,
 484 [Define if you want runtime assertions enabled.  This is a cheap check.])
 485 fi
 486 if test x$ac_tree_checking != x ; then
 487   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 488 [Define if you want all operations on trees (the basic data
 489    structure of the front ends) to be checked for dynamic type safety
 490    at runtime.  This is moderately expensive.  The tree browser debugging
 491    routines will also be enabled by this option.
 492    ])
 493   TREEBROWSER=tree-browser.o
 494 fi
 495 AC_SUBST(TREEBROWSER)
 496 if test x$ac_rtl_checking != x ; then
 497   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 498 [Define if you want all operations on RTL (the basic data structure
 499    of the optimizer and back end) to be checked for dynamic type safety
 500    at runtime.  This is quite expensive.])
 501 fi
 502 if test x$ac_rtlflag_checking != x ; then
 503   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 504 [Define if you want RTL flag accesses to be checked against the RTL
 505    codes that are supported for each access macro.  This is relatively
 506    cheap.])
 507 fi
 508 if test x$ac_gc_checking != x ; then
 509   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 510 [Define if you want the garbage collector to do object poisoning and
 511    other memory allocation checks.  This is quite expensive.])
 512 fi
 513 if test x$ac_gc_always_collect != x ; then
 514   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 515 [Define if you want the garbage collector to operate in maximally
 516    paranoid mode, validating the entire heap and collecting garbage at
 517    every opportunity.  This is extremely expensive.])
 518 fi
 519 if test x$ac_fold_checking != x ; then
 520   AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
 521 [Define if you want fold checked that it never destructs its argument.
 522    This is quite expensive.])
 523 fi
 524 valgrind_path_defines=
 525 valgrind_command=
 526
 527 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
 528 dnl # an if statement.  This was the source of very frustrating bugs
 529 dnl # in converting to autoconf 2.5x!
 530 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 531
 532 if test x$ac_valgrind_checking != x ; then
 533   # It is certainly possible that there's valgrind but no valgrind.h.
 534   # GCC relies on making annotations so we must have both.
 535   AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
 536   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 537     [[#include <valgrind/memcheck.h>
 538 #ifndef VALGRIND_DISCARD
 539 #error VALGRIND_DISCARD not defined
 540 #endif]])],
 541   [gcc_cv_header_valgrind_memcheck_h=yes],
 542   [gcc_cv_header_valgrind_memcheck_h=no])
 543   AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
 544   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 545   AC_PREPROC_IFELSE([AC_LANG_SOURCE(
 546     [[#include <memcheck.h>
 547 #ifndef VALGRIND_DISCARD
 548 #error VALGRIND_DISCARD not defined
 549 #endif]])],
 550   [gcc_cv_header_memcheck_h=yes],
 551   [gcc_cv_header_memcheck_h=no])
 552   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 553   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 554         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 555   if test "x$valgrind_path" = "x" \
 556     || (test $have_valgrind_h = no \
 557         && test $gcc_cv_header_memcheck_h = no \
 558         && test $gcc_cv_header_valgrind_memcheck_h = no); then
 559         AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
 560   fi
 561   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 562   valgrind_command="$valgrind_path -q"
 563   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 564 [Define if you want to run subprograms and generated programs
 565    through valgrind (a memory checker).  This is extremely expensive.])
 566   if test $gcc_cv_header_valgrind_memcheck_h = yes; then
 567     AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
 568         [Define if valgrind's valgrind/memcheck.h header is installed.])
 569   fi
 570   if test $gcc_cv_header_memcheck_h = yes; then
 571     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 572         [Define if valgrind's memcheck.h header is installed.])
 573   fi
 574 fi
 575 AC_SUBST(valgrind_path_defines)
 576 AC_SUBST(valgrind_command)
 577
 578 AC_ARG_ENABLE(mapped-location,
 579 [  --enable-mapped-location   location_t is fileline integer cookie],,
 580 enable_mapped_location=no)
 581
 582 if test "$enable_mapped_location" = yes ; then
 583   AC_DEFINE(USE_MAPPED_LOCATION, 1,
 584 [Define if location_t is fileline integer cookie.])
 585 fi
 586
 587 # Enable code coverage collection
 588 AC_ARG_ENABLE(coverage,
 589 [  --enable-coverage[=LEVEL]
 590                           enable compiler's code coverage collection.
 591                           Use to measure compiler performance and locate
 592                           unused parts of the compiler. With LEVEL, specify
 593                           optimization. Values are opt, noopt,
 594                           default is noopt],
 595 [case "${enableval}" in
 596   yes|noopt)
 597     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
 598     ;;
 599   opt)
 600     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
 601     ;;
 602   no)
 603     # a.k.a. --disable-coverage
 604     coverage_flags=""
 605     ;;
 606   *)
 607     AC_MSG_ERROR(unknown coverage setting $enableval)
 608     ;;
 609 esac],
 610 [coverage_flags=""])
 611 AC_SUBST(coverage_flags)
 612
 613 AC_ARG_ENABLE(gather-detailed-mem-stats,
 614 [  --enable-gather-detailed-mem-stats         enable detailed memory allocation stats gathering], [],
 615 [enable_gather_detailed_mem_stats=no])
 616 if test x$enable_gather_detailed_mem_stats = xyes ; then
 617   AC_DEFINE(GATHER_STATISTICS, 1,
 618         [Define to enable detailed memory allocation stats gathering.])
 619 fi
 620
 621 # -------------------------------
 622 # Miscenalleous configure options
 623 # -------------------------------
 624
 625 # With stabs
 626 AC_ARG_WITH(stabs,
 627 [  --with-stabs            arrange to use stabs instead of host debug format],
 628 stabs="$with_stabs",
 629 stabs=no)
 630
 631 # Determine whether or not multilibs are enabled.
 632 AC_ARG_ENABLE(multilib,
 633 [  --enable-multilib       enable library support for multiple ABIs],
 634 [], [enable_multilib=yes])
 635 AC_SUBST(enable_multilib)
 636
 637 # Enable __cxa_atexit for C++.
 638 AC_ARG_ENABLE(__cxa_atexit,
 639 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 640 [], [])
 641
 642 # Enable threads
 643 # Pass with no value to take the default
 644 # Pass with a value to specify a thread package
 645 AC_ARG_ENABLE(threads,
 646 [  --enable-threads        enable thread usage for target GCC
 647   --enable-threads=LIB    use LIB thread package for target GCC],,
 648 [enable_threads=''])
 649
 650 AC_ARG_ENABLE(objc-gc,
 651 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 652                           the GNU Objective-C runtime],
 653 if test x$enable_objc_gc = xno; then
 654         objc_boehm_gc=''
 655 else
 656         objc_boehm_gc=1
 657 fi,
 658 objc_boehm_gc='')
 659
 660 AC_ARG_WITH(dwarf2,
 661 [  --with-dwarf2           force the default debug format to be DWARF 2],
 662 dwarf2="$with_dwarf2",
 663 dwarf2=no)
 664
 665 AC_ARG_ENABLE(shared,
 666 [  --disable-shared        don't provide a shared libgcc],
 667 [
 668   case $enable_shared in
 669   yes | no) ;;
 670   *)
 671     enable_shared=no
 672     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 673     for pkg in $enableval; do
 674       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 675         enable_shared=yes
 676       fi
 677     done
 678     IFS="$ac_save_ifs"
 679     ;;
 680   esac
 681 ], [enable_shared=yes])
 682 AC_SUBST(enable_shared)
 683
 684 AC_ARG_WITH(build-sysroot,
 685   [  --with-build-sysroot=sysroot
 686                           use sysroot as the system root during the build])
 687
 688 AC_ARG_WITH(sysroot,
 689 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 690 [
 691  case ${with_sysroot} in
 692  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
 693  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 694  esac
 695
 696  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 697  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
 698
 699  if test "x$exec_prefix" = xNONE; then
 700   if test "x$prefix" = xNONE; then
 701    test_prefix=/usr/local
 702   else
 703    test_prefix=$prefix
 704   fi
 705  else
 706   test_prefix=$exec_prefix
 707  fi
 708  case ${TARGET_SYSTEM_ROOT} in
 709  "${test_prefix}"|"${test_prefix}/"*|\
 710  '${exec_prefix}'|'${exec_prefix}/'*)
 711    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 712    TARGET_SYSTEM_ROOT_DEFINE="$t"
 713    ;;
 714  esac
 715 ], [
 716  TARGET_SYSTEM_ROOT=
 717  TARGET_SYSTEM_ROOT_DEFINE=
 718  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 719 ])
 720 AC_SUBST(TARGET_SYSTEM_ROOT)
 721 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 722 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 723
 724 # Build with intermodule optimisations
 725 AC_ARG_ENABLE(intermodule,
 726 [  --enable-intermodule    build the compiler in one step],
 727 [case ${enable_intermodule} in
 728   yes) onestep="-onestep";;
 729   *) onestep="";;
 730 esac],
 731 [onestep=""])
 732 AC_SUBST(onestep)
 733
 734 # Sanity check enable_languages in case someone does not run the toplevel
 735 # configure # script.
 736 AC_ARG_ENABLE(languages,
 737 [  --enable-languages=LIST specify which front-ends to build],
 738 [case ,${enable_languages}, in
 739        ,,|,yes,)
 740                 # go safe -- we cannot be much sure without the toplevel
 741                 # configure's
 742                 # analysis of which target libs are present and usable
 743                 enable_languages=c
 744                 ;;
 745          *,all,*)
 746                 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
 747                 ;;
 748         *,c,*)
 749                 ;;
 750         *)
 751                 enable_languages=c,${enable_languages}
 752                 ;;
 753 esac],
 754 [enable_languages=c])
 755
 756 subdirs=
 757 for lang in ${srcdir}/*/config-lang.in
 758 do
 759         case $lang in
 760         # The odd quoting in the next line works around
 761         # an apparent bug in bash 1.12 on linux.
 762 changequote(,)dnl
 763         ${srcdir}/[*]/config-lang.in) ;;
 764         *)
 765           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
 766           if test "x$lang_alias" = x
 767           then
 768                 echo "$lang doesn't set \$language." 1>&2
 769                 exit 1
 770           fi
 771           case ",$enable_languages," in
 772           *,$lang_alias,*)
 773             subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
 774           esac
 775           ;;
 776 changequote([,])dnl
 777         esac
 778 done
 779
 780
 781 # -------------------------
 782 # Checks for other programs
 783 # -------------------------
 784
 785 AC_PROG_MAKE_SET
 786
 787 # Find some useful tools
 788 AC_PROG_AWK
 789 # We need awk to create options.c and options.h.
 790 # Bail out if it's missing.
 791 case ${AWK} in
 792   "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
 793 esac
 794
 795 gcc_AC_PROG_LN_S
 796 ACX_PROG_LN($LN_S)
 797 AC_PROG_RANLIB
 798 case "${host}" in
 799 *-*-darwin*)
 800   # By default, the Darwin ranlib will not treat common symbols as
 801   # definitions when  building the archive table of contents.  Other
 802   # ranlibs do that; pass an option to the Darwin ranlib that makes
 803   # it behave similarly.
 804   ranlib_flags="-c"
 805   ;;
 806 *)
 807   ranlib_flags=""
 808 esac
 809 AC_SUBST(ranlib_flags)
 810
 811 gcc_AC_PROG_INSTALL
 812
 813 # See if cmp has --ignore-initial.
 814 gcc_AC_PROG_CMP_IGNORE_INITIAL
 815
 816 # See if we have the mktemp command.
 817 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 818
 819 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
 820
 821 # See if makeinfo has been installed and is modern enough
 822 # that we can use it.
 823 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 824   [GNU texinfo.* \([0-9][0-9.]*\)],
 825   [4.[2-9]*])
 826 if test $gcc_cv_prog_makeinfo_modern = no; then
 827   MAKEINFO="$MISSING makeinfo"
 828   AC_MSG_WARN([
 829 *** Makeinfo is missing or too old.
 830 *** Info documentation will not be built.])
 831   BUILD_INFO=
 832 else
 833   BUILD_INFO=info
 834 fi
 835 AC_SUBST(BUILD_INFO)
 836
 837 # Is pod2man recent enough to regenerate manpages?
 838 AC_MSG_CHECKING([for recent Pod::Man])
 839 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 840   AC_MSG_RESULT(yes)
 841   GENERATED_MANPAGES=generated-manpages
 842 else
 843   AC_MSG_RESULT(no)
 844   GENERATED_MANPAGES=
 845 fi
 846 AC_SUBST(GENERATED_MANPAGES)
 847
 848 # How about lex?
 849 dnl Don't use AC_PROG_LEX; we insist on flex.
 850 dnl LEXLIB is not useful in gcc.
 851 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
 852
 853 # Bison?
 854 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
 855
 856 # Binutils are not build modules, unlike bison/flex/makeinfo.  So we
 857 # check for build == host before using them.
 858
 859 # NM
 860 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
 861   && test -d ../binutils ; then
 862   NM='$(objdir)/../binutils/nm-new'
 863 else
 864   AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
 865 fi
 866
 867 # AR
 868 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
 869   && test -d ../binutils ; then
 870   AR='$(objdir)/../binutils/ar'
 871 else
 872   AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
 873 fi
 874
 875
 876 # --------------------
 877 # Checks for C headers
 878 # --------------------
 879
 880 AC_MSG_CHECKING(for GNU C library)
 881 AC_CACHE_VAL(gcc_cv_glibc,
 882 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 883   [[#include <features.h>]], [[
 884 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 885 #error Not a GNU C library system
 886 #endif]])],
 887   [gcc_cv_glibc=yes],
 888   [gcc_cv_glibc=no])])
 889 AC_MSG_RESULT($gcc_cv_glibc)
 890 if test $gcc_cv_glibc = yes; then
 891   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 892 fi
 893
 894 # Need to reject headers which give warnings, so that the -Werror bootstrap
 895 # works later. *sigh*  This needs to come before all header checks.
 896 AC_PROG_CPP_WERROR
 897
 898 AC_HEADER_STDC
 899 AC_HEADER_TIME
 900 ACX_HEADER_STRING
 901 AC_HEADER_SYS_WAIT
 902 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
 903                  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 904                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 905                  direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
 906
 907 # Check for thread headers.
 908 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 909 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 910
 911 # These tests can't be done till we know if we have limits.h.
 912 gcc_AC_C_CHAR_BIT
 913 AC_C_BIGENDIAN
 914
 915 # --------
 916 # UNSORTED
 917 # --------
 918
 919 # Stage specific cflags for build.
 920 stage1_cflags=
 921 case $build in
 922 vax-*-*)
 923   if test x$GCC = xyes
 924   then
 925     stage1_cflags="-Wa,-J"
 926   else
 927     stage1_cflags="-J"
 928   fi
 929   ;;
 930 powerpc-*-darwin*)
 931   # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
 932   # sources; use -no-cpp-precomp to get to GNU cpp.
 933   # Apple's GCC has bugs in designated initializer handling, so disable
 934   # that too.
 935   stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
 936   ;;
 937 esac
 938 AC_SUBST(stage1_cflags)
 939
 940 # These libraries may be used by collect2.
 941 # We may need a special search path to get them linked.
 942 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 943 [save_LIBS="$LIBS"
 944 for libs in '' -lld -lmld \
 945                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
 946                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
 947 do
 948         LIBS="$libs"
 949         AC_TRY_LINK_FUNC(ldopen,
 950                 [gcc_cv_collect2_libs="$libs"; break])
 951 done
 952 LIBS="$save_LIBS"
 953 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
 954 case $gcc_cv_collect2_libs in
 955         "none required")        ;;
 956         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
 957 esac
 958 AC_SUBST(COLLECT2_LIBS)
 959
 960 # When building Ada code on Alpha, we need exc_resume which is usually in
 961 # -lexc.  So test for it.
 962 save_LIBS="$LIBS"
 963 LIBS=
 964 AC_SEARCH_LIBS(exc_resume, exc)
 965 GNAT_LIBEXC="$LIBS"
 966 LIBS="$save_LIBS"
 967 AC_SUBST(GNAT_LIBEXC)
 968
 969 # Some systems put ldexp and frexp in libm instead of libc; assume
 970 # they're both in the same place.  jcf-dump needs them.
 971 save_LIBS="$LIBS"
 972 LIBS=
 973 AC_SEARCH_LIBS(ldexp, m)
 974 LDEXP_LIB="$LIBS"
 975 LIBS="$save_LIBS"
 976 AC_SUBST(LDEXP_LIB)
 977
 978 # Use <inttypes.h> only if it exists,
 979 # doesn't clash with <sys/types.h>, and declares intmax_t.
 980 AC_MSG_CHECKING(for inttypes.h)
 981 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 982 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 983 [[#include <sys/types.h>
 984 #include <inttypes.h>]],
 985   [[intmax_t i = -1;]])],
 986   [gcc_cv_header_inttypes_h=yes],
 987   [gcc_cv_header_inttypes_h=no])])
 988 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 989 if test $gcc_cv_header_inttypes_h = yes; then
 990   AC_DEFINE(HAVE_INTTYPES_H, 1,
 991         [Define if you have a working <inttypes.h> header file.])
 992 fi
 993
 994 dnl Disabled until we have a complete test for buggy enum bitfields.
 995 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 996
 997 define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl
 998   ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl
 999   fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
1000   fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
1001   putchar_unlocked putc_unlocked)
1002 AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
1003         sysconf strsignal getrusage nl_langinfo scandir alphasort \
1004         gettimeofday mbstowcs wcswidth mmap mincore setlocale \
1005         gcc_UNLOCKED_FUNCS)
1006
1007 if test x$ac_cv_func_mbstowcs = xyes; then
1008   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
1009 [    AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
1010 int main()
1011 {
1012   mbstowcs(0, "", 0);
1013   return 0;
1014 }]])],
1015     [gcc_cv_func_mbstowcs_works=yes],
1016     [gcc_cv_func_mbstowcs_works=no],
1017     [gcc_cv_func_mbstowcs_works=yes])])
1018   if test x$gcc_cv_func_mbstowcs_works = xyes; then
1019     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
1020   [Define this macro if mbstowcs does not crash when its
1021    first argument is NULL.])
1022   fi
1023 fi
1024
1025 AC_CHECK_TYPE(ssize_t, int)
1026
1027 # Try to determine the array type of the second argument of getgroups
1028 # for the target system (int or gid_t).
1029 AC_TYPE_GETGROUPS
1030 if test "${target}" = "${build}"; then
1031   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
1032 else
1033   case "${target}" in
1034         # This condition may need some tweaking.  It should include all
1035         # targets where the array type of the second argument of getgroups
1036         # is int and the type of gid_t is not equivalent to int.
1037         *-*-sunos* | *-*-ultrix*)
1038                 TARGET_GETGROUPS_T=int
1039                 ;;
1040         *)
1041                 TARGET_GETGROUPS_T=gid_t
1042                 ;;
1043   esac
1044 fi
1045 AC_SUBST(TARGET_GETGROUPS_T)
1046
1047 gcc_AC_FUNC_MMAP_BLACKLIST
1048
1049 case "${host}" in
1050 *-*-*vms*)
1051   # Under VMS, vfork works very differently than on Unix. The standard test
1052   # won't work, and it isn't easily adaptable. It makes more sense to
1053   # just force it.
1054   ac_cv_func_vfork_works=yes
1055   ;;
1056 esac
1057 AC_FUNC_FORK
1058
1059 AM_ICONV
1060 # Until we have in-tree GNU iconv:
1061 LIBICONV_DEP=
1062 AC_SUBST(LIBICONV_DEP)
1063
1064 AM_LC_MESSAGES
1065
1066 AM_LANGINFO_CODESET
1067
1068 # We will need to find libiberty.h and ansidecl.h
1069 saved_CFLAGS="$CFLAGS"
1070 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1071 gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
1072         strsignal strstr strverscmp \
1073         errno snprintf vsnprintf vasprintf malloc realloc calloc \
1074         free basename getopt clock getpagesize gcc_UNLOCKED_FUNCS, , ,[
1075 #include "ansidecl.h"
1076 #include "system.h"])
1077
1078 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1079 #include "ansidecl.h"
1080 #include "system.h"
1081 #ifdef HAVE_SYS_RESOURCE_H
1082 #include <sys/resource.h>
1083 #endif
1084 ])
1085
1086 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1087 #include "ansidecl.h"
1088 #include "system.h"
1089 #ifdef HAVE_SYS_RESOURCE_H
1090 #include <sys/resource.h>
1091 #endif
1092 ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long],
1093 [Define to \`long' if <sys/resource.h> doesn't define.])])
1094
1095 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1096 # FREAD and FWRITE macros.  Fortunately, for GCC's single usage of ldgetname
1097 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1098 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1099 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1100 #include "ansidecl.h"
1101 #include "system.h"
1102 #ifdef HAVE_LDFCN_H
1103 #undef FREAD
1104 #undef FWRITE
1105 #include <ldfcn.h>
1106 #endif
1107 ])
1108
1109 gcc_AC_CHECK_DECLS(times, , ,[
1110 #include "ansidecl.h"
1111 #include "system.h"
1112 #ifdef HAVE_SYS_TIMES_H
1113 #include <sys/times.h>
1114 #endif
1115 ])
1116
1117 # More time-related stuff.
1118 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1119 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1120 #include "ansidecl.h"
1121 #include "system.h"
1122 #ifdef HAVE_SYS_TIMES_H
1123 #include <sys/times.h>
1124 #endif
1125 ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])])
1126 if test $ac_cv_struct_tms = yes; then
1127   AC_DEFINE(HAVE_STRUCT_TMS, 1,
1128   [Define if <sys/times.h> defines struct tms.])
1129 fi
1130
1131 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1132 # revisit after autoconf 2.50.
1133 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1134 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
1135 #include "ansidecl.h"
1136 #include "system.h"
1137 ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])])
1138 if test $gcc_cv_type_clock_t = yes; then
1139   AC_DEFINE(HAVE_CLOCK_T, 1,
1140   [Define if <time.h> defines clock_t.])
1141 fi
1142
1143 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1144 CFLAGS="$saved_CFLAGS"
1145
1146 gcc_AC_INITFINI_ARRAY
1147
1148 # mkdir takes a single argument on some systems.
1149 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1150
1151 # File extensions
1152 manext='.1'
1153 objext='.o'
1154 AC_SUBST(manext)
1155 AC_SUBST(objext)
1156
1157 # With Setjmp/Longjmp based exception handling.
1158 AC_ARG_ENABLE(sjlj-exceptions,
1159 [  --enable-sjlj-exceptions
1160                           arrange to use setjmp/longjmp exception handling],
1161 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1162 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1163   [Define 0/1 to force the choice for exception handling model.])])
1164
1165 # For platforms with the unwind ABI which includes an unwind library,
1166 # libunwind, we can choose to use the system libunwind.
1167 AC_ARG_WITH(system-libunwind,
1168 [  --with-system-libunwind use installed libunwind])
1169
1170 # --------------------------------------------------------
1171 # Build, host, and target specific configuration fragments
1172 # --------------------------------------------------------
1173
1174 # Collect build-machine-specific information.
1175 . ${srcdir}/config.build
1176
1177 # Collect host-machine-specific information.
1178 . ${srcdir}/config.host
1179
1180 target_gtfiles=
1181
1182 # Collect target-machine-specific information.
1183 . ${srcdir}/config.gcc
1184
1185 extra_objs="${host_extra_objs} ${extra_objs}"
1186 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1187
1188 # Default the target-machine variables that were not explicitly set.
1189 if test x"$tm_file" = x
1190 then tm_file=$cpu_type/$cpu_type.h; fi
1191
1192 if test x"$extra_headers" = x
1193 then extra_headers=; fi
1194
1195 if test x$md_file = x
1196 then md_file=$cpu_type/$cpu_type.md; fi
1197
1198 if test x$out_file = x
1199 then out_file=$cpu_type/$cpu_type.c; fi
1200
1201 if test x"$tmake_file" = x
1202 then tmake_file=$cpu_type/t-$cpu_type
1203 fi
1204
1205 if test x"$dwarf2" = xyes
1206 then tm_file="$tm_file tm-dwarf2.h"
1207 fi
1208
1209 # Say what files are being used for the output code and MD file.
1210 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1211 echo "Using \`$srcdir/config/$md_file' as machine description file."
1212
1213 # If any of the xm_file variables contain nonexistent files, warn
1214 # about them and drop them.
1215
1216 bx=
1217 for x in $build_xm_file; do
1218   if    test -f $srcdir/config/$x
1219   then      bx="$bx $x"
1220   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1221   fi
1222 done
1223 build_xm_file="$bx"
1224
1225 hx=
1226 for x in $host_xm_file; do
1227   if    test -f $srcdir/config/$x
1228   then      hx="$hx $x"
1229   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1230   fi
1231 done
1232 host_xm_file="$hx"
1233
1234 tx=
1235 for x in $xm_file; do
1236   if    test -f $srcdir/config/$x
1237   then      tx="$tx $x"
1238   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1239   fi
1240 done
1241 xm_file="$tx"
1242
1243 count=a
1244 for f in $tm_file; do
1245         count=${count}x
1246 done
1247 if test $count = ax; then
1248         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1249 else
1250         echo "Using the following target machine macro files:"
1251         for f in $tm_file; do
1252                 echo "  $srcdir/config/$f"
1253         done
1254 fi
1255
1256 if test x$need_64bit_hwint = xyes; then
1257         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1258 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1259 fi
1260
1261 if test x$use_long_long_for_widest_fast_int = xyes; then
1262         AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1263 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1264 efficiently supported by the host hardware.])
1265 fi
1266
1267 count=a
1268 for f in $host_xm_file; do
1269         count=${count}x
1270 done
1271 if test $count = a; then
1272         :
1273 elif test $count = ax; then
1274         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1275 else
1276         echo "Using the following host machine macro files:"
1277         for f in $host_xm_file; do
1278                 echo "  $srcdir/config/$f"
1279         done
1280 fi
1281 echo "Using ${out_host_hook_obj} for host machine hooks."
1282
1283 if test "$host_xm_file" != "$build_xm_file"; then
1284         count=a
1285         for f in $build_xm_file; do
1286                 count=${count}x
1287         done
1288         if test $count = a; then
1289                 :
1290         elif test $count = ax; then
1291                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1292         else
1293                 echo "Using the following build machine macro files:"
1294                 for f in $build_xm_file; do
1295                         echo "  $srcdir/config/$f"
1296                 done
1297         fi
1298 fi
1299
1300 # ---------
1301 # Threading
1302 # ---------
1303
1304 # Check if a valid thread package
1305 case ${enable_threads} in
1306   "" | no)
1307     # No threads
1308     target_thread_file='single'
1309     ;;
1310   yes)
1311     # default
1312     target_thread_file='single'
1313     ;;
1314   aix | dce | gnat | irix | posix | posix95 | rtems | \
1315   single | solaris | vxworks | win32 )
1316     target_thread_file=${enable_threads}
1317     ;;
1318   *)
1319     echo "${enable_threads} is an unknown thread package" 1>&2
1320     exit 1
1321     ;;
1322 esac
1323
1324 if test x${thread_file} = x; then
1325   # No thread file set by target-specific clauses in config.gcc,
1326   # so use file chosen by default logic above
1327   thread_file=${target_thread_file}
1328 fi
1329
1330 # Make gthr-default.h if we have a thread file.
1331 gthread_flags=
1332 if test $thread_file != single; then
1333   rm -f gthr-default.h
1334   echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1335   gthread_flags=-DHAVE_GTHR_DEFAULT
1336 fi
1337 AC_SUBST(gthread_flags)
1338
1339 # --------
1340 # UNSORTED
1341 # --------
1342
1343 use_cxa_atexit=no
1344 if test x$enable___cxa_atexit = xyes || \
1345    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1346   if test x$host = x$target; then
1347     AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1348         [echo "__cxa_atexit can't be enabled on this target"])
1349   else
1350     # We can't check for __cxa_atexit when building a cross, so assume
1351     # it is available
1352     use_cxa_atexit=yes
1353   fi
1354   if test x$use_cxa_atexit = xyes; then
1355     AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1356       [Define if you want to use __cxa_atexit, rather than atexit, to
1357       register C++ destructors for local statics and global objects.
1358       This is essential for fully standards-compliant handling of
1359       destructors, but requires __cxa_atexit in libc.])
1360   fi
1361 fi
1362
1363 # Look for a file containing extra machine modes.
1364 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1365   extra_modes_file='$(srcdir)'/config/${extra_modes}
1366   AC_SUBST(extra_modes_file)
1367   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1368   [Define to the name of a file containing a list of extra machine modes
1369    for this architecture.])
1370 fi
1371
1372 # Convert extra_options into a form suitable for Makefile use.
1373 extra_opt_files=
1374 for f in $extra_options; do
1375   extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1376 done
1377 AC_SUBST(extra_opt_files)
1378
1379 # auto-host.h is the file containing items generated by autoconf and is
1380 # the first file included by config.h.
1381 # If host=build, it is correct to have bconfig include auto-host.h
1382 # as well.  If host!=build, we are in error and need to do more
1383 # work to find out the build config parameters.
1384 if test x$host = x$build
1385 then
1386         build_auto=auto-host.h
1387 else
1388         # We create a subdir, then run autoconf in the subdir.
1389         # To prevent recursion we set host and build for the new
1390         # invocation of configure to the build for this invocation
1391         # of configure.
1392         tempdir=build.$$
1393         rm -rf $tempdir
1394         mkdir $tempdir
1395         cd $tempdir
1396         case ${srcdir} in
1397         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1398         *) realsrcdir=../${srcdir};;
1399         esac
1400         saved_CFLAGS="${CFLAGS}"
1401         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1402         ${realsrcdir}/configure \
1403                 --enable-languages=${enable_languages-all} \
1404                 --target=$target_alias --host=$build_alias --build=$build_alias
1405         CFLAGS="${saved_CFLAGS}"
1406
1407         # We just finished tests for the build machine, so rename
1408         # the file auto-build.h in the gcc directory.
1409         mv auto-host.h ../auto-build.h
1410         cd ..
1411         rm -rf $tempdir
1412         build_auto=auto-build.h
1413 fi
1414 AC_SUBST(build_subdir)
1415
1416 tm_file="${tm_file} defaults.h"
1417 tm_p_file="${tm_p_file} tm-preds.h"
1418 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1419 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1420 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1421 # put this back in temporarily.
1422 xm_file="auto-host.h ansidecl.h ${xm_file}"
1423
1424 # --------
1425 # UNSORTED
1426 # --------
1427
1428 changequote(,)dnl
1429 # Compile in configure arguments.
1430 if test -f configargs.h ; then
1431         # Being re-configured.
1432         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1433         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1434 else
1435         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1436 fi
1437
1438 # Double all backslashes and backslash all quotes to turn
1439 # gcc_config_arguments into a C string.
1440 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1441 $gcc_config_arguments
1442 EOF
1443 gcc_config_arguments_str=`cat conftest.out`
1444 rm -f conftest.out
1445
1446 cat > configargs.h <<EOF
1447 /* Generated automatically. */
1448 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1449 static const char thread_model[] = "$thread_file";
1450
1451 static const struct {
1452   const char *name, *value;
1453 } configure_default_options[] = $configure_default_options;
1454 EOF
1455 changequote([,])dnl
1456
1457 # Internationalization
1458 ZW_GNU_GETTEXT_SISTER_DIR
1459
1460 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1461 # -liconv on the link line twice.
1462 case "$LIBINTL" in *$LIBICONV*)
1463         LIBICONV= ;;
1464 esac
1465
1466 AC_ARG_ENABLE(secureplt,
1467 [  --enable-secureplt      enable -msecure-plt by default for PowerPC],
1468 [], [])
1469
1470 # Windows32 Registry support for specifying GCC installation paths.
1471 AC_ARG_ENABLE(win32-registry,
1472 [  --disable-win32-registry
1473                           disable lookup of installation paths in the
1474                           Registry on Windows hosts
1475   --enable-win32-registry enable registry lookup (default)
1476   --enable-win32-registry=KEY
1477                           use KEY instead of GCC version as the last portion
1478                           of the registry key],,)
1479
1480 case $host_os in
1481   win32 | pe | cygwin* | mingw32* | uwin*)
1482     if test "x$enable_win32_registry" != xno; then
1483       AC_SEARCH_LIBS(RegOpenKeyExA, advapi32,, [enable_win32_registry=no])
1484     fi
1485
1486     if test "x$enable_win32_registry" != xno; then
1487       AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1488   [Define to 1 if installation paths should be looked up in the Windows
1489    Registry. Ignored on non-Windows hosts.])
1490
1491       if test "x$enable_win32_registry" != xyes \
1492          && test "x$enable_win32_registry" != x; then
1493         AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$enable_win32_registry",
1494   [Define to be the last component of the Windows registry key under which
1495    to look for installation paths.  The full key used will be
1496    HKEY_LOCAL_MACHINE/SOFTWARE/Free Software Foundation/{WIN32_REGISTRY_KEY}.
1497    The default is the GCC version number.])
1498       fi
1499     fi
1500   ;;
1501 esac
1502
1503 # Get an absolute path to the GCC top-level source directory
1504 holddir=`${PWDCMD-pwd}`
1505 cd $srcdir
1506 topdir=`${PWDCMD-pwd}`
1507 cd $holddir
1508
1509 # Conditionalize the makefile for this host machine.
1510 xmake_file=
1511 for f in ${host_xmake_file}
1512 do
1513         if test -f ${srcdir}/config/$f
1514         then
1515                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1516         fi
1517 done
1518
1519 # Conditionalize the makefile for this target machine.
1520 tmake_file_=
1521 for f in ${tmake_file}
1522 do
1523         if test -f ${srcdir}/config/$f
1524         then
1525                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1526         fi
1527 done
1528 tmake_file="${tmake_file_}"
1529
1530 # If the host doesn't support symlinks, modify CC in
1531 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1532 # Otherwise, we can use "CC=$(CC)".
1533 rm -f symtest.tem
1534 case "$LN_S" in
1535         *-s*)
1536                 cc_set_by_configure="\$(CC)"
1537                 quoted_cc_set_by_configure="\$(CC)"
1538                 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1539                 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1540                 ;;
1541         *)
1542                 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1543                 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1544                 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1545                 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1546                 ;;
1547 esac
1548
1549 # This is a terrible hack which will go away some day.
1550 host_cc_for_libada=${CC}
1551 AC_SUBST(host_cc_for_libada)
1552
1553 out_object_file=`basename $out_file .c`.o
1554
1555 tm_file_list="options.h"
1556 tm_include_list="options.h"
1557 for f in $tm_file; do
1558   case $f in
1559     defaults.h )
1560        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1561        tm_include_list="${tm_include_list} $f"
1562        ;;
1563     * )
1564        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1565        tm_include_list="${tm_include_list} config/$f"
1566        ;;
1567   esac
1568 done
1569
1570 tm_p_file_list=
1571 tm_p_include_list=
1572 for f in $tm_p_file; do
1573   case $f in
1574     tm-preds.h )
1575        tm_p_file_list="${tm_p_file_list} $f"
1576        tm_p_include_list="${tm_p_include_list} $f"
1577        ;;
1578     * )
1579        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1580        tm_p_include_list="${tm_p_include_list} config/$f"
1581   esac
1582 done
1583
1584 xm_file_list=
1585 xm_include_list=
1586 for f in $xm_file; do
1587   case $f in
1588     ansidecl.h )
1589        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1590        xm_include_list="${xm_include_list} $f"
1591        ;;
1592     auto-host.h )
1593        xm_file_list="${xm_file_list} $f"
1594        xm_include_list="${xm_include_list} $f"
1595        ;;
1596     * )
1597        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1598        xm_include_list="${xm_include_list} config/$f"
1599        ;;
1600   esac
1601 done
1602
1603 host_xm_file_list=
1604 host_xm_include_list=
1605 for f in $host_xm_file; do
1606   case $f in
1607     ansidecl.h )
1608        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1609        host_xm_include_list="${host_xm_include_list} $f"
1610        ;;
1611     auto-host.h )
1612        host_xm_file_list="${host_xm_file_list} $f"
1613        host_xm_include_list="${host_xm_include_list} $f"
1614        ;;
1615     * )
1616        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1617        host_xm_include_list="${host_xm_include_list} config/$f"
1618        ;;
1619   esac
1620 done
1621
1622 build_xm_file_list=
1623 for f in $build_xm_file; do
1624   case $f in
1625     ansidecl.h )
1626        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1627        build_xm_include_list="${build_xm_include_list} $f"
1628        ;;
1629     auto-build.h | auto-host.h )
1630        build_xm_file_list="${build_xm_file_list} $f"
1631        build_xm_include_list="${build_xm_include_list} $f"
1632        ;;
1633     * )
1634        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1635        build_xm_include_list="${build_xm_include_list} config/$f"
1636        ;;
1637   esac
1638 done
1639
1640 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1641 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1642 CROSS=                                          AC_SUBST(CROSS)
1643 ALL=all.internal                                AC_SUBST(ALL)
1644 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1645
1646 if test "x$with_build_sysroot" != x; then
1647   build_system_header_dir=$with_build_sysroot'$(NATIVE_SYSTEM_HEADER_DIR)'
1648 else
1649   # This value is used, even on a native system, because
1650   # CROSS_SYSTEM_HEADER_DIR is just
1651   # $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR).
1652   build_system_header_dir='$(CROSS_SYSTEM_HEADER_DIR)'
1653 fi
1654
1655 if test x$host != x$target
1656 then
1657         CROSS="-DCROSS_COMPILE"
1658         ALL=all.cross
1659         SYSTEM_HEADER_DIR=$build_system_header_dir
1660         case "$host","$target" in
1661         # Darwin crosses can use the host system's libraries and headers,
1662         # because of the fat library support.  Of course, it must be the
1663         # same version of Darwin on both sides.  Allow the user to
1664         # just say --target=foo-darwin without a version number to mean
1665         # "the version on this system".
1666             *-*-darwin*,*-*-darwin*)
1667                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1668                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1669                 if test $hostos = $targetos -o $targetos = darwin ; then
1670                     CROSS=
1671                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1672                     with_headers=yes
1673                 fi
1674                 ;;
1675
1676             i?86-*-*,x86_64-*-* \
1677             | powerpc*-*-*,powerpc64*-*-*)
1678                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1679         esac
1680 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1681         SYSTEM_HEADER_DIR=$build_system_header_dir
1682 fi
1683
1684 # If this is a cross-compiler that does not
1685 # have its own set of headers then define
1686 # inhibit_libc
1687
1688 # If this is using newlib, without having the headers available now,
1689 # then define inhibit_libc in LIBGCC2_CFLAGS.
1690 # This prevents libgcc2 from containing any code which requires libc
1691 # support.
1692 inhibit_libc=false
1693 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1694        test x$with_newlib = xyes ; } &&
1695      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1696        inhibit_libc=true
1697 fi
1698 AC_SUBST(inhibit_libc)
1699
1700 # When building gcc with a cross-compiler, we need to adjust things so
1701 # that the generator programs are still built with the native compiler.
1702 # Also, we cannot run fixincludes or fix-header.
1703
1704 # These are the normal (build=host) settings:
1705 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
1706 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1707 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1708
1709 # Possibly disable fixproto, on a per-target basis.
1710 case ${use_fixproto} in
1711   no)
1712     STMP_FIXPROTO=
1713     ;;
1714   yes)
1715     STMP_FIXPROTO=stmp-fixproto
1716     ;;
1717 esac
1718 AC_SUBST(STMP_FIXPROTO)
1719
1720 # And these apply if build != host, or we are generating coverage data
1721 if test x$build != x$host || test "x$coverage_flags" != x
1722 then
1723     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1724
1725     if test "x$TARGET_SYSTEM_ROOT" = x; then
1726         if test "x$STMP_FIXPROTO" != x; then
1727           STMP_FIXPROTO=stmp-install-fixproto
1728         fi
1729     fi
1730 fi
1731
1732 # Expand extra_headers to include complete path.
1733 # This substitutes for lots of t-* files.
1734 extra_headers_list=
1735 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1736 for file in ${extra_headers} ; do
1737   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1738 done
1739
1740 # Define collect2 in Makefile.
1741 case $host_can_use_collect2 in
1742   no) collect2= ;;
1743   *) collect2='collect2$(exeext)' ;;
1744 esac
1745 AC_SUBST([collect2])
1746
1747 # Add a definition of USE_COLLECT2 if system wants one.
1748 case $use_collect2 in
1749   no) use_collect2= ;;
1750   "") ;;
1751   *)
1752     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1753     xm_defines="${xm_defines} USE_COLLECT2"
1754     case $host_can_use_collect2 in
1755       no)
1756         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1757         ;;
1758     esac
1759     ;;
1760 esac
1761
1762 # ---------------------------
1763 # Assembler & linker features
1764 # ---------------------------
1765
1766 # Identify the assembler which will work hand-in-glove with the newly
1767 # built GCC, so that we can examine its features.  This is the assembler
1768 # which will be driven by the driver program.
1769 #
1770 # If build != host, and we aren't building gas in-tree, we identify a
1771 # build->target assembler and hope that it will have the same features
1772 # as the host->target assembler we'll be using.
1773 in_tree_gas=no
1774 gcc_cv_as=
1775 gcc_cv_gas_major_version=
1776 gcc_cv_gas_minor_version=
1777 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1778 if test -x "$DEFAULT_ASSEMBLER"; then
1779         gcc_cv_as="$DEFAULT_ASSEMBLER"
1780 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1781      && test -f ../gas/Makefile \
1782      && test x$build = x$host; then
1783   # Single tree build which includes gas.  We want to prefer it
1784   # over whatever linker top-level may have detected, since
1785   # we'll use what we're building after installation anyway.
1786   in_tree_gas=yes
1787   _gcc_COMPUTE_GAS_VERSION
1788   gcc_cv_as=../gas/as-new$build_exeext
1789   in_tree_gas_is_elf=no
1790   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1791      || (grep 'obj_format = multi' ../gas/Makefile \
1792          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1793   then
1794     in_tree_gas_is_elf=yes
1795   fi
1796 m4_pattern_allow([AS_FOR_TARGET])dnl
1797 elif test -x as$build_exeext; then
1798         # Build using assembler in the current directory.
1799         gcc_cv_as=./as$build_exeext
1800 fi
1801
1802 gcc_AC_CHECK_TOOL(gcc_cv_as, as, ORIGINAL_AS_FOR_TARGET, AS_FOR_TARGET, AS)
1803 AC_MSG_CHECKING(what assembler to use)
1804 case $in_tree_gas in
1805   yes)
1806     AC_MSG_RESULT("newly built gas")
1807     ;;
1808   no)
1809     AC_MSG_RESULT($gcc_cv_as)
1810     ;;
1811 esac
1812
1813 # Identify the linker which will work hand-in-glove with the newly
1814 # built GCC, so that we can examine its features.  This is the linker
1815 # which will be driven by the driver program.
1816 #
1817 # If build != host, and we aren't building gas in-tree, we identify a
1818 # build->target linker and hope that it will have the same features
1819 # as the host->target linker we'll be using.
1820 in_tree_ld=no
1821 gcc_cv_ld=
1822 gcc_cv_gld_major_version=
1823 gcc_cv_gld_minor_version=
1824 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1825 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1826 if test -x "$DEFAULT_LINKER"; then
1827         gcc_cv_ld="$DEFAULT_LINKER"
1828 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1829      && test -f ../ld/Makefile \
1830      && test x$build = x$host; then
1831         # Single tree build which includes ld.  We want to prefer it
1832         # over whatever linker top-level may have detected, since
1833         # we'll use what we're building after installation anyway.
1834         in_tree_ld=yes
1835         in_tree_ld_is_elf=no
1836         if (grep 'EMUL = .*elf' ../ld/Makefile \
1837             || grep 'EMUL = .*linux' ../ld/Makefile \
1838             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1839           in_tree_ld_is_elf=yes
1840         fi
1841         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
1842         do
1843 changequote(,)dnl
1844                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1845 changequote([,])dnl
1846                 if test x$gcc_cv_gld_version != x; then
1847                         break
1848                 fi
1849         done
1850 changequote(,)dnl
1851         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1852         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1853 changequote([,])dnl
1854         gcc_cv_ld=../ld/ld-new$build_exeext
1855 elif test -x collect-ld$build_exeext; then
1856         # Build using linker in the current directory.
1857         gcc_cv_ld=./collect-ld$build_exeext
1858 fi
1859
1860 gcc_AC_CHECK_TOOL(gcc_cv_ld, ld, ORIGINAL_LD_FOR_TARGET, LD_FOR_TARGET, LD)
1861 AC_MSG_CHECKING(what linker to use)
1862 case $in_tree_ld in
1863   yes)
1864     AC_MSG_RESULT("newly built ld")
1865     ;;
1866   no)
1867     AC_MSG_RESULT($gcc_cv_ld)
1868     ;;
1869 esac
1870
1871 # Figure out what nm we will be using.
1872 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1873 in_tree_nm=no
1874 gcc_cv_nm=
1875 if test -f $gcc_cv_binutils_srcdir/configure.in \
1876      && test -f ../binutils/Makefile; then
1877         # Single tree build which includes binutils.
1878         in_tree_nm=yes
1879         gcc_cv_nm=../binutils/nm-new$build_exeext
1880 elif test -x nm$build_exeext; then
1881         gcc_cv_nm=./nm$build_exeext
1882 fi
1883
1884 gcc_AC_CHECK_TOOL(gcc_cv_nm, nm, ORIGINAL_NM_FOR_TARGET, NM_FOR_TARGET, NM)
1885 AC_MSG_CHECKING(what nm to use)
1886 case $in_tree_nm in
1887   yes) AC_MSG_RESULT("newly built nm") ;;
1888   no)  AC_MSG_RESULT($gcc_cv_nm) ;;
1889 esac
1890
1891 # Figure out what objdump we will be using.
1892 in_tree_objdump=no
1893 gcc_cv_objdump=
1894 if test -f $gcc_cv_binutils_srcdir/configure.in \
1895      && test -f ../binutils/Makefile; then
1896         # Single tree build which includes binutils.
1897         in_tree_objdump=yes
1898         gcc_cv_objdump=../binutils/objdump$build_exeext
1899 elif test -x objdump$build_exeext; then
1900         gcc_cv_objdump=./objdump$build_exeext
1901 fi
1902
1903 gcc_AC_CHECK_TOOL(gcc_cv_objdump, objdump, ORIGINAL_OBJDUMP_FOR_TARGET,
1904                   OBJDUMP_FOR_TARGET, OBJDUMP)
1905 AC_MSG_CHECKING(what objdump to use)
1906 case $in_tree_objdump in
1907   yes) AC_MSG_RESULT("newly built objdump") ;;
1908   no)  AC_MSG_RESULT($gcc_cv_objdump) ;;
1909 esac
1910
1911 # Figure out what assembler alignment features are present.
1912 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
1913  [2,6,0],,
1914 [.balign 4
1915 .p2align 2],,
1916 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
1917   [Define if your assembler supports .balign and .p2align.])])
1918
1919 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
1920  [2,8,0],,
1921  [.p2align 4,,7],,
1922 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
1923   [Define if your assembler supports specifying the maximum number
1924    of bytes to skip when using the GAS .p2align command.])])
1925
1926 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
1927  [elf,2,9,0],,
1928  [conftest_label1: .word 0
1929 .subsection -1
1930 conftest_label2: .word 0
1931 .previous],
1932  [if test x$gcc_cv_nm != x; then
1933     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1934     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1935     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
1936     then :
1937     else gcc_cv_as_subsection_m1=yes
1938     fi
1939     rm -f conftest.nm1 conftest.nm2
1940   fi],
1941  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1942   [Define if your assembler supports .subsection and .subsection -1 starts
1943    emitting at the beginning of your section.])])
1944
1945 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
1946  [2,2,0],,
1947  [      .weak foobar],,
1948 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
1949
1950 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
1951  [2,15,91],,
1952  [      .SPACE $TEXT$
1953         .NSUBSPA $CODE$,COMDAT],,
1954 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
1955
1956 # .hidden needs to be supported in both the assembler and the linker,
1957 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1958 # This is irritatingly difficult to feature test for; we have to check the
1959 # date string after the version number.  If we've got an in-tree
1960 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
1961 # to be safe.
1962 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
1963 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
1964  [elf,2,13,0],,
1965 [       .hidden foobar
1966 foobar:])
1967
1968 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
1969 [if test $in_tree_ld = yes ; then
1970   gcc_cv_ld_hidden=no
1971   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
1972      && test $in_tree_ld_is_elf = yes; then
1973      gcc_cv_ld_hidden=yes
1974   fi
1975 else
1976   gcc_cv_ld_hidden=yes
1977   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
1978   if echo "$ld_ver" | grep GNU > /dev/null; then
1979 changequote(,)dnl
1980     ld_vers=`echo $ld_ver | sed -n \
1981         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1982         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1983         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
1984         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)[  ].*$,\1,p' \
1985         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[     ].*$,\1,p' \
1986         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[       ].*$,\1,p' \
1987         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[   ].*$,\1,p'`
1988     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1989     ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1990     ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1991     ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
1992     if test 0"$ld_date" -lt 20020404; then
1993       if test -n "$ld_date"; then
1994         # If there was date string, but was earlier than 2002-04-04, fail
1995         gcc_cv_ld_hidden=no
1996       elif test -z "$ld_vers"; then
1997         # If there was no date string nor ld version number, something is wrong
1998         gcc_cv_ld_hidden=no
1999       else
2000         test -z "$ld_vers_patch" && ld_vers_patch=0
2001         if test "$ld_vers_major" -lt 2; then
2002           gcc_cv_ld_hidden=no
2003         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2004           gcc_cv_ld_hidden="no"
2005         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2006           gcc_cv_ld_hidden=no
2007         fi
2008       fi
2009 changequote([,])dnl
2010     fi
2011   else
2012     case "${target}" in
2013       hppa64*-*-hpux* | ia64*-*-hpux*)
2014         gcc_cv_ld_hidden=yes
2015         ;;
2016       *)
2017         gcc_cv_ld_hidden=no
2018         ;;
2019     esac
2020   fi
2021 fi])
2022 libgcc_visibility=no
2023 AC_SUBST(libgcc_visibility)
2024 GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN])
2025 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2026   libgcc_visibility=yes
2027   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2028   [Define if your assembler and linker support .hidden.])
2029 fi
2030
2031 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2032 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2033   [elf,2,11,0],,
2034 [       .data
2035         .uleb128 L2 - L1
2036 L1:
2037         .uleb128 1280
2038         .sleb128 -1010
2039 L2:],
2040  [# GAS versions before 2.11 do not support uleb128,
2041   # despite appearing to.
2042   # ??? There exists an elf-specific test that will crash
2043   # the assembler.  Perhaps it's better to figure out whether
2044   # arbitrary sections are supported and try the test.
2045   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2046   if echo "$as_ver" | grep GNU > /dev/null; then
2047 changequote(,)dnl
2048     as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2049     as_major=`echo $as_ver | sed 's/\..*//'`
2050     as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2051 changequote([,])dnl
2052     if test $as_major -eq 2 && test $as_minor -lt 11
2053     then :
2054     else gcc_cv_as_leb128=yes
2055     fi
2056   fi],
2057   [AC_DEFINE(HAVE_AS_LEB128, 1,
2058     [Define if your assembler supports .sleb128 and .uleb128.])])
2059
2060 # GAS versions up to and including 2.11.0 may mis-optimize
2061 # .eh_frame data.
2062 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2063   [elf,2,12,0],,
2064 [       .text
2065 .LFB1:
2066         .4byte  0
2067 .L1:
2068         .4byte  0
2069 .LFE1:
2070         .section        .eh_frame,"aw",@progbits
2071 __FRAME_BEGIN__:
2072         .4byte  .LECIE1-.LSCIE1
2073 .LSCIE1:
2074         .4byte  0x0
2075         .byte   0x1
2076         .ascii "z\0"
2077         .byte   0x1
2078         .byte   0x78
2079         .byte   0x1a
2080         .byte   0x0
2081         .byte   0x4
2082         .4byte  1
2083         .p2align 1
2084 .LECIE1:
2085 .LSFDE1:
2086         .4byte  .LEFDE1-.LASFDE1
2087 .LASFDE1:
2088         .4byte  .LASFDE1-__FRAME_BEGIN__
2089         .4byte  .LFB1
2090         .4byte  .LFE1-.LFB1
2091         .byte   0x4
2092         .4byte  .LFE1-.LFB1
2093         .byte   0x4
2094         .4byte  .L1-.LFB1
2095 .LEFDE1:],
2096 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2097 cat > conftest.lit <<EOF
2098  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2099  0010 01000000 12000000 18000000 00000000  ................
2100  0020 08000000 04080000 0044               .........D      @&t@
2101 EOF
2102 cat > conftest.big <<EOF
2103  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2104  0010 00000001 00000012 00000018 00000000  ................
2105  0020 00000008 04000000 0844               .........D      @&t@
2106 EOF
2107   # If the assembler didn't choke, and we can objdump,
2108   # and we got the correct data, then succeed.
2109   if test x$gcc_cv_objdump != x \
2110   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2111      | tail -3 > conftest.got \
2112   && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2113     || cmp conftest.big conftest.got > /dev/null 2>&1; }
2114   then
2115     gcc_cv_as_eh_frame=yes
2116   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2117     gcc_cv_as_eh_frame=buggy
2118   else
2119     # Uh oh, what do we do now?
2120     gcc_cv_as_eh_frame=no
2121   fi])
2122
2123 if test $gcc_cv_as_eh_frame = buggy; then
2124   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2125   [Define if your assembler mis-optimizes .eh_frame data.])
2126 fi
2127
2128 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2129  [elf,2,12,0], [--fatal-warnings],
2130  [.section .rodata.str, "aMS", @progbits, 1])
2131 if test $gcc_cv_as_shf_merge = no; then
2132   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2133     [elf,2,12,0], [--fatal-warnings],
2134     [.section .rodata.str, "aMS", %progbits, 1])
2135 fi
2136 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2137   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2138 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2139
2140 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2141  [elf,2,16,0], [--fatal-warnings],
2142  [.section .text,"axG",@progbits,.foo,comdat])
2143 if test $gcc_cv_as_comdat_group = yes; then
2144   gcc_cv_as_comdat_group_percent=no
2145 else
2146  gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2147    [elf,2,16,0], [--fatal-warnings],
2148    [.section .text,"axG",%progbits,.foo,comdat])
2149 fi
2150 if test $in_tree_ld != yes && test x"$ld_vers" != x; then
2151   comdat_group=yes
2152   if test 0"$ld_date" -lt 20050308; then
2153     if test -n "$ld_date"; then
2154       # If there was date string, but was earlier than 2005-03-08, fail
2155       comdat_group=no
2156     elif test "$ld_vers_major" -lt 2; then
2157       comdat_group=no
2158     elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
2159       comdat_group=no
2160     fi
2161   fi
2162   if test $comdat_group = no; then
2163     gcc_cv_as_comdat_group=no
2164     gcc_cv_as_comdat_group_percent=no
2165   fi
2166 fi
2167 AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP,
2168   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2169 [Define 0/1 if your assembler and linker support COMDAT groups.])
2170
2171 # Thread-local storage - the check is heavily parametrized.
2172 conftest_s=
2173 tls_first_major=
2174 tls_first_minor=
2175 tls_as_opt=
2176 case "$target" in
2177 changequote(,)dnl
2178   alpha*-*-*)
2179     conftest_s='
2180         .section ".tdata","awT",@progbits
2181 foo:    .long   25
2182         .text
2183         ldq     $27,__tls_get_addr($29)         !literal!1
2184         lda     $16,foo($29)                    !tlsgd!1
2185         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2186         ldq     $27,__tls_get_addr($29)         !literal!2
2187         lda     $16,foo($29)                    !tlsldm!2
2188         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2189         ldq     $1,foo($29)                     !gotdtprel
2190         ldah    $2,foo($29)                     !dtprelhi
2191         lda     $3,foo($2)                      !dtprello
2192         lda     $4,foo($29)                     !dtprel
2193         ldq     $1,foo($29)                     !gottprel
2194         ldah    $2,foo($29)                     !tprelhi
2195         lda     $3,foo($2)                      !tprello
2196         lda     $4,foo($29)                     !tprel'
2197         tls_first_major=2
2198         tls_first_minor=13
2199         tls_as_opt=--fatal-warnings
2200         ;;
2201   frv*-*-*)
2202     conftest_s='
2203         .section ".tdata","awT",@progbits
2204 x:      .long   25
2205         .text
2206         call    #gettlsoff(x)'
2207         tls_first_major=2
2208         tls_first_minor=14
2209         ;;
2210   hppa*-*-linux*)
2211     conftest_s='
2212 t1:     .reg    %r20
2213 t2:     .reg    %r21
2214 gp:     .reg    %r19
2215         .section ".tdata","awT",@progbits
2216 foo:    .long   25
2217         .text
2218         .align  4
2219         addil LT%foo-$tls_gdidx$,gp
2220         ldo RT%foo-$tls_gdidx$(%r1),%arg0
2221         b __tls_get_addr
2222         nop
2223         addil LT%foo-$tls_ldidx$,gp
2224         b __tls_get_addr
2225         ldo RT%foo-$tls_ldidx$(%r1),%arg0
2226         addil LR%foo-$tls_dtpoff$,%ret0
2227         ldo RR%foo-$tls_dtpoff$(%r1),%t1
2228         mfctl %cr27,%t1
2229         addil LT%foo-$tls_ieoff$,gp
2230         ldw RT%foo-$tls_ieoff$(%r1),%t2
2231         add %t1,%t2,%t3
2232         mfctl %cr27,%t1
2233         addil LR%foo-$tls_leoff$,%t1
2234         ldo RR%foo-$tls_leoff$(%r1),%t2'
2235         tls_first_major=2
2236         tls_first_minor=15
2237         tls_as_opt=--fatal-warnings
2238         ;;
2239   i[34567]86-*-*)
2240     conftest_s='
2241         .section ".tdata","awT",@progbits
2242 foo:    .long   25
2243         .text
2244         movl    %gs:0, %eax
2245         leal    foo@TLSGD(,%ebx,1), %eax
2246         leal    foo@TLSLDM(%ebx), %eax
2247         leal    foo@DTPOFF(%eax), %edx
2248         movl    foo@GOTTPOFF(%ebx), %eax
2249         subl    foo@GOTTPOFF(%ebx), %eax
2250         addl    foo@GOTNTPOFF(%ebx), %eax
2251         movl    foo@INDNTPOFF, %eax
2252         movl    $foo@TPOFF, %eax
2253         subl    $foo@TPOFF, %eax
2254         leal    foo@NTPOFF(%ecx), %eax'
2255         tls_first_major=2
2256         tls_first_minor=14
2257         tls_as_opt=--fatal-warnings
2258         ;;
2259   x86_64-*-*)
2260     conftest_s='
2261         .section ".tdata","awT",@progbits
2262 foo:    .long   25
2263         .text
2264         movq    %fs:0, %rax
2265         leaq    foo@TLSGD(%rip), %rdi
2266         leaq    foo@TLSLD(%rip), %rdi
2267         leaq    foo@DTPOFF(%rax), %rdx
2268         movq    foo@GOTTPOFF(%rip), %rax
2269         movq    $foo@TPOFF, %rax'
2270         tls_first_major=2
2271         tls_first_minor=14
2272         tls_as_opt=--fatal-warnings
2273         ;;
2274   ia64-*-*)
2275     conftest_s='
2276         .section ".tdata","awT",@progbits
2277 foo:    data8   25
2278         .text
2279         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2280         addl    r17 = @ltoff(@dtprel(foo#)), gp
2281         addl    r18 = @ltoff(@tprel(foo#)), gp
2282         addl    r19 = @dtprel(foo#), gp
2283         adds    r21 = @dtprel(foo#), r13
2284         movl    r23 = @dtprel(foo#)
2285         addl    r20 = @tprel(foo#), gp
2286         adds    r22 = @tprel(foo#), r13
2287         movl    r24 = @tprel(foo#)'
2288         tls_first_major=2
2289         tls_first_minor=13
2290         tls_as_opt=--fatal-warnings
2291         ;;
2292   mips*-*-*)
2293     conftest_s='
2294         .section .tdata,"awT",@progbits
2295 x:
2296         .word 2
2297         .text
2298         addiu $4, $28, %tlsgd(x)
2299         addiu $4, $28, %tlsldm(x)
2300         lui $4, %dtprel_hi(x)
2301         addiu $4, $4, %dtprel_lo(x)
2302         lw $4, %gottprel(x)($28)
2303         lui $4, %tprel_hi(x)
2304         addiu $4, $4, %tprel_lo(x)'
2305         tls_first_major=2
2306         tls_first_minor=16
2307         tls_as_opt='-32 --fatal-warnings'
2308         ;;
2309   powerpc-*-*)
2310     conftest_s='
2311         .section ".tdata","awT",@progbits
2312         .align 2
2313 ld0:    .space 4
2314 ld1:    .space 4
2315 x1:     .space 4
2316 x2:     .space 4
2317 x3:     .space 4
2318         .text
2319         addi 3,31,ld0@got@tlsgd
2320         bl __tls_get_addr
2321         addi 3,31,x1@got@tlsld
2322         bl __tls_get_addr
2323         addi 9,3,x1@dtprel
2324         addis 9,3,x2@dtprel@ha
2325         addi 9,9,x2@dtprel@l
2326         lwz 9,x3@got@tprel(31)
2327         add 9,9,x@tls
2328         addi 9,2,x1@tprel
2329         addis 9,2,x2@tprel@ha
2330         addi 9,9,x2@tprel@l'
2331         tls_first_major=2
2332         tls_first_minor=14
2333         tls_as_opt="-a32 --fatal-warnings"
2334         ;;
2335   powerpc64-*-*)
2336     conftest_s='
2337         .section ".tdata","awT",@progbits
2338         .align 3
2339 ld0:    .space 8
2340 ld1:    .space 8
2341 x1:     .space 8
2342 x2:     .space 8
2343 x3:     .space 8
2344         .text
2345         addi 3,2,ld0@got@tlsgd
2346         bl .__tls_get_addr
2347         nop
2348         addi 3,2,ld1@toc
2349         bl .__tls_get_addr
2350         nop
2351         addi 3,2,x1@got@tlsld
2352         bl .__tls_get_addr
2353         nop
2354         addi 9,3,x1@dtprel
2355         bl .__tls_get_addr
2356         nop
2357         addis 9,3,x2@dtprel@ha
2358         addi 9,9,x2@dtprel@l
2359         bl .__tls_get_addr
2360         nop
2361         ld 9,x3@got@dtprel(2)
2362         add 9,9,3
2363         bl .__tls_get_addr
2364         nop'
2365         tls_first_major=2
2366         tls_first_minor=14
2367         tls_as_opt="-a64 --fatal-warnings"
2368         ;;
2369   s390-*-*)
2370     conftest_s='
2371         .section ".tdata","awT",@progbits
2372 foo:    .long   25
2373         .text
2374         .long   foo@TLSGD
2375         .long   foo@TLSLDM
2376         .long   foo@DTPOFF
2377         .long   foo@NTPOFF
2378         .long   foo@GOTNTPOFF
2379         .long   foo@INDNTPOFF
2380         l       %r1,foo@GOTNTPOFF(%r12)
2381         l       %r1,0(%r1):tls_load:foo
2382         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2383         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2384         tls_first_major=2
2385         tls_first_minor=14
2386         tls_as_opt="-m31 --fatal-warnings"
2387         ;;
2388   s390x-*-*)
2389     conftest_s='
2390         .section ".tdata","awT",@progbits
2391 foo:    .long   25
2392         .text
2393         .quad   foo@TLSGD
2394         .quad   foo@TLSLDM
2395         .quad   foo@DTPOFF
2396         .quad   foo@NTPOFF
2397         .quad   foo@GOTNTPOFF
2398         lg      %r1,foo@GOTNTPOFF(%r12)
2399         larl    %r1,foo@INDNTPOFF
2400         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2401         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2402         tls_first_major=2
2403         tls_first_minor=14
2404         tls_as_opt="-m64 -Aesame --fatal-warnings"
2405         ;;
2406   sh-*-* | sh[34]-*-*)
2407     conftest_s='
2408         .section ".tdata","awT",@progbits
2409 foo:    .long   25
2410         .text
2411         .long   foo@TLSGD
2412         .long   foo@TLSLDM
2413         .long   foo@DTPOFF
2414         .long   foo@GOTTPOFF
2415         .long   foo@TPOFF'
2416         tls_first_major=2
2417         tls_first_minor=13
2418         tls_as_opt=--fatal-warnings
2419         ;;
2420   sparc*-*-*)
2421     case "$target" in
2422       sparc*-sun-solaris2.*)
2423         on_solaris=yes
2424         ;;
2425       *)
2426         on_solaris=no
2427         ;;
2428     esac
2429     if test x$on_solaris = xyes && test x$gas_flag = xno; then
2430       conftest_s='
2431         .section ".tdata",#alloc,#write,#tls
2432 foo:    .long   25
2433         .text
2434         sethi   %tgd_hi22(foo), %o0
2435         add     %o0, %tgd_lo10(foo), %o1
2436         add     %l7, %o1, %o0, %tgd_add(foo)
2437         call    __tls_get_addr, %tgd_call(foo)
2438         sethi   %tldm_hi22(foo), %l1
2439         add     %l1, %tldm_lo10(foo), %l2
2440         add     %l7, %l2, %o0, %tldm_add(foo)
2441         call    __tls_get_addr, %tldm_call(foo)
2442         sethi   %tldo_hix22(foo), %l3
2443         xor     %l3, %tldo_lox10(foo), %l4
2444         add     %o0, %l4, %l5, %tldo_add(foo)
2445         sethi   %tie_hi22(foo), %o3
2446         add     %o3, %tie_lo10(foo), %o3
2447         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2448         add     %g7, %o2, %o4, %tie_add(foo)
2449         sethi   %tle_hix22(foo), %l1
2450         xor     %l1, %tle_lox10(foo), %o5
2451         ld      [%g7 + %o5], %o1'
2452         tls_first_major=0
2453         tls_first_minor=0
2454     else
2455       conftest_s='
2456         .section ".tdata","awT",@progbits
2457 foo:    .long   25
2458         .text
2459         sethi   %tgd_hi22(foo), %o0
2460         add     %o0, %tgd_lo10(foo), %o1
2461         add     %l7, %o1, %o0, %tgd_add(foo)
2462         call    __tls_get_addr, %tgd_call(foo)
2463         sethi   %tldm_hi22(foo), %l1
2464         add     %l1, %tldm_lo10(foo), %l2
2465         add     %l7, %l2, %o0, %tldm_add(foo)
2466         call    __tls_get_addr, %tldm_call(foo)
2467         sethi   %tldo_hix22(foo), %l3
2468         xor     %l3, %tldo_lox10(foo), %l4
2469         add     %o0, %l4, %l5, %tldo_add(foo)
2470         sethi   %tie_hi22(foo), %o3
2471         add     %o3, %tie_lo10(foo), %o3
2472         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2473         add     %g7, %o2, %o4, %tie_add(foo)
2474         sethi   %tle_hix22(foo), %l1
2475         xor     %l1, %tle_lox10(foo), %o5
2476         ld      [%g7 + %o5], %o1'
2477         tls_first_major=2
2478         tls_first_minor=14
2479         tls_as_opt="-32 --fatal-warnings"
2480       fi
2481         ;;
2482 changequote([,])dnl
2483 esac
2484 if test -z "$tls_first_major"; then
2485   : # If we don't have a check, assume no support.
2486 else
2487   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2488   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2489   [AC_DEFINE(HAVE_AS_TLS, 1,
2490             [Define if your assembler supports thread-local storage.])])
2491 fi
2492
2493 # Target-specific assembler checks.
2494
2495 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2496 gcc_cv_ld_static_dynamic=no
2497 if test $in_tree_ld = yes ; then
2498   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2499     gcc_cv_ld_static_dynamic=yes
2500   fi
2501 elif test x$gcc_cv_ld != x; then
2502         # Check if linker supports -Bstatic/-Bdynamic option
2503         if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2504           && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2505                 gcc_cv_ld_static_dynamic=yes
2506         fi
2507 fi
2508 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2509         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2510 [Define if your linker supports -Bstatic/-Bdynamic option.])
2511 fi
2512 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2513
2514 if test x"$demangler_in_ld" = xyes; then
2515   AC_MSG_CHECKING(linker --demangle support)
2516   gcc_cv_ld_demangle=no
2517   if test $in_tree_ld = yes; then
2518     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2519       gcc_cv_ld_demangle=yes
2520     fi
2521   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2522     # Check if the GNU linker supports --demangle option
2523     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2524       gcc_cv_ld_demangle=yes
2525     fi
2526   fi
2527   if test x"$gcc_cv_ld_demangle" = xyes; then
2528     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2529 [Define if your linker supports --demangle option.])
2530   fi
2531   AC_MSG_RESULT($gcc_cv_ld_demangle)
2532 fi
2533
2534 case "$target" in
2535   # All TARGET_ABI_OSF targets.
2536   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2537     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2538         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2539 [       .set nomacro
2540         .text
2541         extbl   $3, $2, $3      !lituse_bytoff!1
2542         ldq     $2, a($29)      !literal!1
2543         ldq     $4, b($29)      !literal!2
2544         ldq_u   $3, 0($2)       !lituse_base!1
2545         ldq     $27, f($29)     !literal!5
2546         jsr     $26, ($27), f   !lituse_jsr!5
2547         ldah    $29, 0($26)     !gpdisp!3
2548         lda     $0, c($29)      !gprel
2549         ldah    $1, d($29)      !gprelhigh
2550         lda     $1, d($1)       !gprellow
2551         lda     $29, 0($29)     !gpdisp!3],,
2552     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2553   [Define if your assembler supports explicit relocations.])])
2554     gcc_GAS_CHECK_FEATURE([jsrdirect relocation support],
2555         gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],,
2556 [       .set nomacro
2557         .text
2558         ldq     $27, a($29)     !literal!1
2559         jsr     $26, ($27), a   !lituse_jsrdirect!1],,
2560     [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1,
2561   [Define if your assembler supports the lituse_jsrdirect relocation.])])
2562     ;;
2563
2564   cris-*-*)
2565     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2566       gcc_cv_as_cris_no_mul_bug,[2,15,91],
2567       [-no-mul-bug-abort], [.text],,
2568       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2569                 [Define if your assembler supports the -no-mul-bug-abort option.])])
2570     ;;
2571
2572   sparc*-*-*)
2573     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2574       [.register %g2, #scratch],,
2575       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2576                 [Define if your assembler supports .register.])])
2577
2578     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2579       [-relax], [.text],,
2580       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2581                 [Define if your assembler supports -relax option.])])
2582
2583     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2584       gcc_cv_as_sparc_ua_pcrel,,
2585       [-K PIC],
2586 [.text
2587 foo:
2588         nop
2589 .data
2590 .align 4
2591 .byte 0
2592 .uaword %r_disp32(foo)],
2593       [if test x$gcc_cv_ld != x \
2594        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2595          gcc_cv_as_sparc_ua_pcrel=yes
2596        fi
2597        rm -f conftest],
2598       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2599                 [Define if your assembler and linker support unaligned PC relative relocs.])
2600
2601       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2602         gcc_cv_as_sparc_ua_pcrel_hidden,,
2603         [-K PIC],
2604 [.data
2605 .align 4
2606 .byte 0x31
2607 .uaword %r_disp32(foo)
2608 .byte 0x32, 0x33, 0x34
2609 .global foo
2610 .hidden foo
2611 foo:
2612 .skip 4],
2613         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2614          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2615          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2616             | grep ' 31000000 07323334' > /dev/null 2>&1; then
2617             if $gcc_cv_objdump -R conftest 2> /dev/null \
2618                | grep 'DISP32' > /dev/null 2>&1; then
2619                 :
2620             else
2621                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2622             fi
2623          fi
2624          rm -f conftest],
2625          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2626                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2627     ]) # unaligned pcrel relocs
2628
2629     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2630       gcc_cv_as_sparc_offsetable_lo10,,
2631       [-xarch=v9],
2632 [.text
2633         or %g1, %lo(ab) + 12, %g1
2634         or %g1, %lo(ab + 12), %g1],
2635       [if test x$gcc_cv_objdump != x \
2636        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2637           | grep ' 82106000 82106000' > /dev/null 2>&1; then
2638          gcc_cv_as_sparc_offsetable_lo10=yes
2639        fi],
2640        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2641                  [Define if your assembler supports offsetable %lo().])])
2642     ;;
2643
2644 changequote(,)dnl
2645   i[34567]86-*-* | x86_64-*-*)
2646 changequote([,])dnl
2647     case $target_os in
2648       cygwin* | pe | mingw32*)
2649         # Used for DWARF 2 in PE
2650         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2651           gcc_cv_as_ix86_pe_secrel32,
2652           [2,15,91],,
2653 [.text
2654 foo:    nop
2655 .data
2656         .secrel32 foo],
2657           [if test x$gcc_cv_ld != x \
2658            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2659              gcc_cv_as_ix86_pe_secrel32=yes
2660            fi
2661            rm -f conftest],
2662           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2663             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2664         ;;
2665     esac
2666
2667     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2668        gcc_cv_as_ix86_filds_fists,
2669       [2,9,0],, [filds mem; fists mem],,
2670       [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2671         [Define if your assembler uses the new HImode fild and fist notation.])])
2672
2673     gcc_GAS_CHECK_FEATURE([cmov syntax],
2674       gcc_cv_as_ix86_cmov_sun_syntax,,,
2675       [cmovl.l %edx, %eax],,
2676       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2677         [Define if your assembler supports the Sun syntax for cmov.])])
2678
2679     # This one is used unconditionally by i386.[ch]; it is to be defined
2680     # to 1 if the feature is present, 0 otherwise.
2681     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2682         gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2683 [       .text
2684 .L0:
2685         nop
2686         .data
2687         .long .L0@GOTOFF])
2688     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2689       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2690       [Define true if the assembler supports '.long foo@GOTOFF'.])
2691     ;;
2692
2693   ia64*-*-*)
2694     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2695         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2696 [       .text
2697         addl r15 = @ltoffx(x#), gp
2698         ;;
2699         ld8.mov r16 = [[r15]], x#],,
2700     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2701           [Define if your assembler supports ltoffx and ldxmov relocations.])])
2702
2703     ;;
2704
2705   powerpc*-*-*)
2706     case $target in
2707       *-*-aix*) conftest_s='    .machine "pwr5"
2708         .csect .text[[PR]]
2709         mfcr 3,128';;
2710       *-*-darwin*)
2711         gcc_GAS_CHECK_FEATURE([.machine directive support],
2712           gcc_cv_as_machine_directive,,,
2713           [     .machine ppc7400])
2714         if test x$gcc_cv_as_machine_directive != xyes; then
2715           echo "*** This target requires an assembler supporting \".machine\"" >&2
2716           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2717           test x$build = x$target && exit 1
2718         fi
2719         conftest_s='    .text
2720         mfcr r3,128';;
2721       *) conftest_s='   .machine power4
2722         .text
2723         mfcr 3,128';;
2724     esac
2725
2726     gcc_GAS_CHECK_FEATURE([mfcr field support],
2727       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2728       [$conftest_s],,
2729       [AC_DEFINE(HAVE_AS_MFCRF, 1,
2730           [Define if your assembler supports mfcr field.])])
2731
2732     case $target in
2733       *-*-aix*) conftest_s='    .machine "pwr5"
2734         .csect .text[[PR]]
2735         popcntb 3,3';;
2736       *) conftest_s='   .machine power5
2737         .text
2738         popcntb 3,3';;
2739     esac
2740
2741     gcc_GAS_CHECK_FEATURE([popcntb support],
2742       gcc_cv_as_powerpc_popcntb, [2,17,0],,
2743       [$conftest_s],,
2744       [AC_DEFINE(HAVE_AS_POPCNTB, 1,
2745           [Define if your assembler supports popcntb field.])])
2746
2747     case $target in
2748       *-*-aix*) conftest_s='    .csect .text[[PR]]
2749 LCF..0:
2750         addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';;
2751       *-*-darwin*)
2752         conftest_s='    .text
2753 LCF0:
2754         addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';;
2755       *) conftest_s='   .text
2756 .LCF0:
2757         addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';;
2758     esac
2759
2760     gcc_GAS_CHECK_FEATURE([rel16 relocs],
2761       gcc_cv_as_powerpc_rel16, [2,17,0], -a32,
2762       [$conftest_s],,
2763       [AC_DEFINE(HAVE_AS_REL16, 1,
2764           [Define if your assembler supports R_PPC_REL16 relocs.])])
2765     ;;
2766
2767   mips*-*-*)
2768     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2769       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2770 [       lw $4,%gp_rel(foo)($4)],,
2771       [if test x$target_cpu_default = x
2772        then target_cpu_default=MASK_EXPLICIT_RELOCS
2773        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2774        fi])
2775
2776     if test x$gas_flag = xyes \
2777        || test x"$host" != x"$build" \
2778        || test ! -x "$gcc_cv_as" \
2779        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2780       :
2781     else
2782       echo "*** This configuration requires the GNU assembler" >&2
2783       exit 1
2784     fi
2785     ;;
2786 esac
2787 # ??? Not all targets support dwarf2 debug_line, even within a version
2788 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2789 # info to the output file.  So, as supported targets are added to gas 2.11,
2790 # add some instruction here to (also) show we expect this might work.
2791 # ??? Once 2.11 is released, probably need to add first known working
2792 # version to the per-target configury.
2793 case "$target" in
2794   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2795   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2796   | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2797     insn="nop"
2798     ;;
2799   ia64*-*-* | s390*-*-*)
2800     insn="nop 0"
2801     ;;
2802   mmix-*-*)
2803     insn="swym 0"
2804     ;;
2805 esac
2806 if test x"$insn" != x; then
2807  conftest_s="\
2808         .file 1 \"conftest.s\"
2809         .loc 1 3 0
2810         $insn"
2811  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2812   gcc_cv_as_dwarf2_debug_line,
2813   [elf,2,11,0],, [$conftest_s],
2814   [if test x$gcc_cv_objdump != x \
2815    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2816       | grep debug_line > /dev/null 2>&1; then
2817      gcc_cv_as_dwarf2_debug_line=yes
2818    fi])
2819
2820 # The .debug_line file table must be in the exact order that
2821 # we specified the files, since these indices are also used
2822 # by DW_AT_decl_file.  Approximate this test by testing if
2823 # the assembler bitches if the same index is assigned twice.
2824  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2825   gcc_cv_as_dwarf2_file_buggy,,,
2826 [       .file 1 "foo.s"
2827         .file 1 "bar.s"])
2828
2829  if test $gcc_cv_as_dwarf2_debug_line = yes \
2830  && test $gcc_cv_as_dwarf2_file_buggy = no; then
2831         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2832   [Define if your assembler supports dwarf2 .file/.loc directives,
2833    and preserves file table indices exactly as given.])
2834  fi
2835
2836  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2837   gcc_cv_as_gdwarf2_flag,
2838   [elf,2,11,0], [--gdwarf2], [$insn],,
2839   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2840 [Define if your assembler supports the --gdwarf2 option.])])
2841
2842  gcc_GAS_CHECK_FEATURE([--gstabs option],
2843   gcc_cv_as_gstabs_flag,
2844   [elf,2,11,0], [--gstabs], [$insn],
2845   [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2846    # and warns about it, but still exits successfully.  So check for
2847    # this.
2848    if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2849    then :
2850    else gcc_cv_as_gstabs_flag=yes
2851    fi],
2852   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2853 [Define if your assembler supports the --gstabs option.])])
2854 fi
2855
2856 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2857 gcc_cv_ld_ro_rw_mix=unknown
2858 if test $in_tree_ld = yes ; then
2859   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2860      && test $in_tree_ld_is_elf = yes; then
2861     gcc_cv_ld_ro_rw_mix=read-write
2862   fi
2863 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2864   echo '.section myfoosect, "a"' > conftest1.s
2865   echo '.section myfoosect, "aw"' > conftest2.s
2866   echo '.byte 1' >> conftest2.s
2867   echo '.section myfoosect, "a"' > conftest3.s
2868   echo '.byte 0' >> conftest3.s
2869   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2870      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2871      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2872      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2873         conftest2.o conftest3.o > /dev/null 2>&1; then
2874     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2875                          | sed -e '/myfoosect/!d' -e N`
2876     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2877       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2878         gcc_cv_ld_ro_rw_mix=read-only
2879       else
2880         gcc_cv_ld_ro_rw_mix=read-write
2881       fi
2882     fi
2883   fi
2884 changequote(,)dnl
2885   rm -f conftest.* conftest[123].*
2886 changequote([,])dnl
2887 fi
2888 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2889         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2890   [Define if your linker links a mix of read-only
2891    and read-write sections into a read-write section.])
2892 fi
2893 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2894
2895 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2896 gcc_cv_ld_eh_frame_hdr=no
2897 if test $in_tree_ld = yes ; then
2898   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2899      && test $in_tree_ld_is_elf = yes; then
2900     gcc_cv_ld_eh_frame_hdr=yes
2901   fi
2902 elif test x$gcc_cv_ld != x; then
2903         # Check if linker supports --eh-frame-hdr option
2904         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2905                 gcc_cv_ld_eh_frame_hdr=yes
2906         fi
2907 fi
2908 GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR])
2909 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2910         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2911 [Define if your linker supports --eh-frame-hdr option.])
2912 fi
2913 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2914
2915 AC_MSG_CHECKING(linker position independent executable support)
2916 gcc_cv_ld_pie=no
2917 if test $in_tree_ld = yes ; then
2918   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2919      && test $in_tree_ld_is_elf = yes; then
2920     gcc_cv_ld_pie=yes
2921   fi
2922 elif test x$gcc_cv_ld != x; then
2923         # Check if linker supports -pie option
2924         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2925                 gcc_cv_ld_pie=yes
2926         fi
2927 fi
2928 if test x"$gcc_cv_ld_pie" = xyes; then
2929         AC_DEFINE(HAVE_LD_PIE, 1,
2930 [Define if your linker supports -pie option.])
2931 fi
2932 AC_MSG_RESULT($gcc_cv_ld_pie)
2933
2934 # --------
2935 # UNSORTED
2936 # --------
2937
2938 AC_CACHE_CHECK(linker --as-needed support,
2939 gcc_cv_ld_as_needed,
2940 [gcc_cv_ld_as_needed=no
2941 if test $in_tree_ld = yes ; then
2942   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2943      && test $in_tree_ld_is_elf = yes; then
2944     gcc_cv_ld_as_needed=yes
2945   fi
2946 elif test x$gcc_cv_ld != x; then
2947         # Check if linker supports --as-needed and --no-as-needed options
2948         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2949                 gcc_cv_ld_as_needed=yes
2950         fi
2951 fi
2952 ])
2953 if test x"$gcc_cv_ld_as_needed" = xyes; then
2954         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2955 [Define if your linker supports --as-needed and --no-as-needed options.])
2956 fi
2957
2958 case "$target:$tm_file" in
2959   powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
2960     AC_CACHE_CHECK(linker support for omitting dot symbols,
2961     gcc_cv_ld_no_dot_syms,
2962     [gcc_cv_ld_no_dot_syms=no
2963     if test $in_tree_ld = yes ; then
2964       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2965         gcc_cv_ld_no_dot_syms=yes
2966       fi
2967     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2968       cat > conftest1.s <<EOF
2969         .text
2970         bl .foo
2971 EOF
2972       cat > conftest2.s <<EOF
2973         .section ".opd","aw"
2974         .align 3
2975         .globl foo
2976         .type foo,@function
2977 foo:
2978         .quad .LEfoo,.TOC.@tocbase,0
2979         .text
2980 .LEfoo:
2981         blr
2982         .size foo,.-.LEfoo
2983 EOF
2984       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2985          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2986          && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2987         gcc_cv_ld_no_dot_syms=yes
2988       fi
2989       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2990     fi
2991     ])
2992     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2993       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2994     [Define if your PowerPC64 linker only needs function descriptor syms.])
2995     fi
2996     ;;
2997 esac
2998
2999 AC_CACHE_CHECK(linker --sysroot support,
3000   gcc_cv_ld_sysroot,
3001   [gcc_cv_ld_sysroot=no
3002   if test $in_tree_ld = yes ; then
3003       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then
3004         gcc_cv_ld_sysroot=yes
3005       fi
3006   elif test x$gcc_cv_ld != x; then
3007     if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then
3008       gcc_cv_ld_sysroot=yes
3009     fi
3010   fi])
3011 if test x"$gcc_cv_ld_sysroot" = xyes; then
3012   AC_DEFINE(HAVE_LD_SYSROOT, 1,
3013   [Define if your linker supports --sysroot.])
3014 fi
3015
3016 if test x$with_sysroot = x && test x$host = x$target \
3017    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3018   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3019 [Define to PREFIX/include if cpp should also search that directory.])
3020 fi
3021
3022 # Test for stack protector support in target C library.
3023 case "$target" in
3024   *-*-linux*)
3025     AC_CACHE_CHECK(__stack_chk_fail in target GNU C library,
3026       gcc_cv_libc_provides_ssp,
3027       [gcc_cv_libc_provides_ssp=no
3028       if test x$host != x$target || test "x$TARGET_SYSTEM_ROOT" != x; then
3029         if test "x$with_sysroot" = x; then
3030           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-include"
3031         elif test "x$with_sysroot" = xyes; then
3032           glibc_header_dir="${exec_prefix}/${target_noncanonical}/sys-root/usr/include"
3033         else
3034           glibc_header_dir="${with_sysroot}/usr/include"
3035         fi
3036       else
3037         glibc_header_dir=/usr/include
3038       fi
3039       # glibc 2.4 and later provides __stack_chk_fail and
3040       # either __stack_chk_guard, or TLS access to stack guard canary.
3041       if test -f $glibc_header_dir/features.h \
3042          && $EGREP '^@<:@       @:>@*#[         ]*define[       ]+__GNU_LIBRARY__[      ]+([1-9][0-9]|[6-9])' \
3043             $glibc_header_dir/features.h > /dev/null; then
3044         if $EGREP '^@<:@        @:>@*#[         ]*define[       ]+__GLIBC__[    ]+([1-9][0-9]|[3-9])' \
3045            $glibc_header_dir/features.h > /dev/null; then
3046           gcc_cv_libc_provides_ssp=yes
3047         elif $EGREP '^@<:@      @:>@*#[         ]*define[       ]+__GLIBC__[    ]+2' \
3048              $glibc_header_dir/features.h > /dev/null \
3049              && $EGREP '^@<:@   @:>@*#[         ]*define[       ]+__GLIBC_MINOR__[      ]+([1-9][0-9]|[4-9])' \
3050              $glibc_header_dir/features.h > /dev/null; then
3051           gcc_cv_libc_provides_ssp=yes
3052         fi
3053       fi]) ;;
3054   *) gcc_cv_libc_provides_ssp=no ;;
3055 esac
3056 if test x$gcc_cv_libc_provides_ssp = xyes; then
3057   AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1,
3058             [Define if your target C library provides stack protector support])
3059 fi
3060
3061 # Find out what GC implementation we want, or may, use.
3062 AC_ARG_WITH(gc,
3063 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
3064                           with the compiler],
3065 [case "$withval" in
3066   page)
3067     GGC=ggc-$withval
3068     ;;
3069   zone)
3070     GGC=ggc-$withval
3071     AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3072     ;;
3073   *)
3074     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3075     ;;
3076 esac],
3077 [GGC=ggc-page])
3078 AC_SUBST(GGC)
3079 echo "Using $GGC for garbage collection."
3080
3081 # Use the system's zlib library.
3082 zlibdir=-L../zlib
3083 zlibinc="-I\$(srcdir)/../zlib"
3084 AC_ARG_WITH(system-zlib,
3085 [  --with-system-zlib      use installed libz],
3086 zlibdir=
3087 zlibinc=
3088 )
3089 AC_SUBST(zlibdir)
3090 AC_SUBST(zlibinc)
3091
3092 dnl Very limited version of automake's enable-maintainer-mode
3093
3094 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3095   dnl maintainer-mode is disabled by default
3096   AC_ARG_ENABLE(maintainer-mode,
3097 [  --enable-maintainer-mode
3098                           enable make rules and dependencies not useful
3099                           (and sometimes confusing) to the casual installer],
3100       maintainer_mode=$enableval,
3101       maintainer_mode=no)
3102
3103 AC_MSG_RESULT($maintainer_mode)
3104
3105 if test "$maintainer_mode" = "yes"; then
3106   MAINT=''
3107 else
3108   MAINT='#'
3109 fi
3110 AC_SUBST(MAINT)dnl
3111
3112 # --------------
3113 # Language hooks
3114 # --------------
3115
3116 # Make empty files to contain the specs and options for each language.
3117 # Then add #include lines to for a compiler that has specs and/or options.
3118
3119 lang_opt_files=
3120 lang_specs_files=
3121 lang_tree_files=
3122 for subdir in . $subdirs
3123 do
3124         if test -f $srcdir/$subdir/lang.opt; then
3125             lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3126         fi
3127         if test -f $srcdir/$subdir/lang-specs.h; then
3128             lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3129         fi
3130         if test -f $srcdir/$subdir/$subdir-tree.def; then
3131             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3132         fi
3133 done
3134
3135 # These (without "all_") are set in each config-lang.in.
3136 # `language' must be a single word so is spelled singularly.
3137 all_languages=
3138 all_boot_languages=
3139 all_compilers=
3140 all_stagestuff=
3141 all_outputs='Makefile gccbug mklibgcc libada-mk'
3142 # List of language makefile fragments.
3143 all_lang_makefrags=
3144 # List of language subdirectory makefiles.  Deprecated.
3145 all_lang_makefiles=
3146 # Files for gengtype
3147 all_gtfiles="$target_gtfiles"
3148 # Files for gengtype with language
3149 all_gtfiles_files_langs=
3150 all_gtfiles_files_files=
3151
3152 # Add the language fragments.
3153 # Languages are added via two mechanisms.  Some information must be
3154 # recorded in makefile variables, these are defined in config-lang.in.
3155 # We accumulate them and plug them into the main Makefile.
3156 # The other mechanism is a set of hooks for each of the main targets
3157 # like `clean', `install', etc.
3158
3159 language_hooks="Make-hooks"
3160
3161 for s in $subdirs
3162 do
3163                 language=
3164                 boot_language=
3165                 compilers=
3166                 stagestuff=
3167                 outputs=
3168                 gtfiles=
3169                 . ${srcdir}/$s/config-lang.in
3170                 if test "x$language" = x
3171                 then
3172                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3173                         exit 1
3174                 fi
3175                 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3176                 if test -f ${srcdir}/$s/Makefile.in
3177                 then all_lang_makefiles="$s/Makefile"
3178                 fi
3179                 all_languages="$all_languages $language"
3180                 if test "x$boot_language" = xyes
3181                 then
3182                         all_boot_languages="$all_boot_languages $language"
3183                 fi
3184                 all_compilers="$all_compilers $compilers"
3185                 all_stagestuff="$all_stagestuff $stagestuff"
3186                 all_outputs="$all_outputs $outputs"
3187                 all_gtfiles="$all_gtfiles $gtfiles"
3188                 for f in $gtfiles
3189                 do
3190                          all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3191                          all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3192                 done
3193 done
3194
3195 # Pick up gtfiles for c
3196 gtfiles=
3197 s="c"
3198 . ${srcdir}/c-config-lang.in
3199 all_gtfiles="$all_gtfiles $gtfiles"
3200 for f in $gtfiles
3201 do
3202         all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3203         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3204 done
3205
3206 check_languages=
3207 for language in $all_languages
3208 do
3209                 check_languages="$check_languages check-$language"
3210 done
3211
3212 # We link each language in with a set of hooks, reached indirectly via
3213 # lang.${target}.
3214
3215 rm -f Make-hooks
3216 touch Make-hooks
3217 target_list="all.build all.cross start.encap rest.encap tags \
3218         install-normal install-common install-man \
3219         uninstall info man srcextra srcman srcinfo \
3220         mostlyclean clean distclean maintainer-clean \
3221         stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3222 for t in $target_list
3223 do
3224         x=
3225         for lang in $all_languages
3226         do
3227                         x="$x $lang.$t"
3228         done
3229         echo "lang.$t: $x" >> Make-hooks
3230 done
3231
3232 # --------
3233 # UNSORTED
3234 # --------
3235
3236 # Create .gdbinit.
3237
3238 echo "dir ." > .gdbinit
3239 echo "dir ${srcdir}" >> .gdbinit
3240 if test x$gdb_needs_out_file_path = xyes
3241 then
3242         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3243 fi
3244 if test "x$subdirs" != x; then
3245         for s in $subdirs
3246         do
3247                 echo "dir ${srcdir}/$s" >> .gdbinit
3248         done
3249 fi
3250 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3251
3252 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3253 # absolute path for gcc_tooldir based on inserting the number of up-directory
3254 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3255 # $(libsubdir)/@(unlibsubdir) based path.
3256 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3257 # make and thus we'd get different behavior depending on where we built the
3258 # sources.
3259 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3260     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3261 else
3262 changequote(<<, >>)dnl
3263 # An explanation of the sed strings:
3264 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
3265 #  -e 's|/$||'            match a trailing forward slash and eliminates it
3266 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
3267 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
3268 #
3269 # (*) Note this pattern overwrites the first character of the string
3270 # with a forward slash if one is not already present.  This is not a
3271 # problem because the exact names of the sub-directories concerned is
3272 # unimportant, just the number of them matters.
3273 #
3274 # The practical upshot of these patterns is like this:
3275 #
3276 #  prefix     exec_prefix        result
3277 #  ------     -----------        ------
3278 #   /foo        /foo/bar          ../
3279 #   /foo/       /foo/bar          ../
3280 #   /foo        /foo/bar/         ../
3281 #   /foo/       /foo/bar/         ../
3282 #   /foo        /foo/bar/ugg      ../../
3283 #
3284     dollar='$$'
3285     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3286 changequote([, ])dnl
3287 fi
3288 AC_SUBST(gcc_tooldir)
3289 AC_SUBST(dollar)
3290
3291 # Find a directory in which to install a shared libgcc.
3292
3293 AC_ARG_ENABLE(version-specific-runtime-libs,
3294 [  --enable-version-specific-runtime-libs
3295                           specify that runtime libraries should be
3296                           installed in a compiler-specific directory])
3297
3298 AC_ARG_WITH(slibdir,
3299 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
3300 slibdir="$with_slibdir",
3301 if test "${enable_version_specific_runtime_libs+set}" = set; then
3302   slibdir='$(libsubdir)'
3303 elif test "$host" != "$target"; then
3304   slibdir='$(build_tooldir)/lib'
3305 else
3306   slibdir='$(libdir)'
3307 fi)
3308 AC_SUBST(slibdir)
3309
3310 objdir=`${PWDCMD-pwd}`
3311 AC_SUBST(objdir)
3312
3313 # Substitute configuration variables
3314 AC_SUBST(subdirs)
3315 AC_SUBST(srcdir)
3316 AC_SUBST(all_boot_languages)
3317 AC_SUBST(all_compilers)
3318 AC_SUBST(all_gtfiles)
3319 AC_SUBST(all_gtfiles_files_langs)
3320 AC_SUBST(all_gtfiles_files_files)
3321 AC_SUBST(all_lang_makefrags)
3322 AC_SUBST(all_lang_makefiles)
3323 AC_SUBST(all_languages)
3324 AC_SUBST(all_stagestuff)
3325 AC_SUBST(build_exeext)
3326 AC_SUBST(build_install_headers_dir)
3327 AC_SUBST(build_xm_file_list)
3328 AC_SUBST(build_xm_include_list)
3329 AC_SUBST(build_xm_defines)
3330 AC_SUBST(check_languages)
3331 AC_SUBST(cc_set_by_configure)
3332 AC_SUBST(quoted_cc_set_by_configure)
3333 AC_SUBST(cpp_install_dir)
3334 AC_SUBST(xmake_file)
3335 AC_SUBST(tmake_file)
3336 AC_SUBST(extra_gcc_objs)
3337 AC_SUBST(extra_headers_list)
3338 AC_SUBST(extra_objs)
3339 AC_SUBST(extra_parts)
3340 AC_SUBST(extra_passes)
3341 AC_SUBST(extra_programs)
3342 AC_SUBST(float_h_file)
3343 AC_SUBST(gcc_config_arguments)
3344 AC_SUBST(gcc_gxx_include_dir)
3345 AC_SUBST(libstdcxx_incdir)
3346 AC_SUBST(host_exeext)
3347 AC_SUBST(host_xm_file_list)
3348 AC_SUBST(host_xm_include_list)
3349 AC_SUBST(host_xm_defines)
3350 AC_SUBST(out_host_hook_obj)
3351 AC_SUBST(install)
3352 AC_SUBST(lang_opt_files)
3353 AC_SUBST(lang_specs_files)
3354 AC_SUBST(lang_tree_files)
3355 AC_SUBST(local_prefix)
3356 AC_SUBST(md_file)
3357 AC_SUBST(objc_boehm_gc)
3358 AC_SUBST(out_file)
3359 AC_SUBST(out_object_file)
3360 AC_SUBST(stage_prefix_set_by_configure)
3361 AC_SUBST(quoted_stage_prefix_set_by_configure)
3362 AC_SUBST(thread_file)
3363 AC_SUBST(tm_file_list)
3364 AC_SUBST(tm_include_list)
3365 AC_SUBST(tm_defines)
3366 AC_SUBST(tm_p_file_list)
3367 AC_SUBST(tm_p_include_list)
3368 AC_SUBST(xm_file_list)
3369 AC_SUBST(xm_include_list)
3370 AC_SUBST(xm_defines)
3371 AC_SUBST(c_target_objs)
3372 AC_SUBST(cxx_target_objs)
3373 AC_SUBST(target_cpu_default)
3374
3375 AC_SUBST_FILE(language_hooks)
3376
3377 # Echo link setup.
3378 if test x${build} = x${host} ; then
3379   if test x${host} = x${target} ; then
3380     echo "Links are now set up to build a native compiler for ${target}." 1>&2
3381   else
3382     echo "Links are now set up to build a cross-compiler" 1>&2
3383     echo " from ${host} to ${target}." 1>&2
3384   fi
3385 else
3386   if test x${host} = x${target} ; then
3387     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3388     echo " for ${target}." 1>&2
3389   else
3390     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3391     echo " from ${host} to ${target}." 1>&2
3392   fi
3393 fi
3394
3395 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3396 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3397
3398 # Configure the subdirectories
3399 # AC_CONFIG_SUBDIRS($subdirs)
3400
3401 # Create the Makefile
3402 # and configure language subdirectories
3403 AC_CONFIG_FILES($all_outputs)
3404
3405 AC_CONFIG_COMMANDS([default],
3406 [
3407 case ${CONFIG_HEADERS} in
3408   *auto-host.h:config.in*)
3409   echo > cstamp-h ;;
3410 esac
3411 # Make sure all the subdirs exist.
3412 for d in $subdirs doc build
3413 do
3414     test -d $d || mkdir $d
3415 done
3416 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3417 # bootstrapping and the installation procedure can still use
3418 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3419 # FLAGS_TO_PASS has been modified to solve the problem there.
3420 # This is virtually a duplicate of what happens in configure.lang; we do
3421 # an extra check to make sure this only happens if ln -s can be used.
3422 case "$LN_S" in
3423   *-s*)
3424     for d in ${subdirs} ; do
3425         STARTDIR=`${PWDCMD-pwd}`
3426         cd $d
3427         for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3428         do
3429                 rm -f $t
3430                 $LN_S ../$t $t 2>/dev/null
3431         done
3432         cd $STARTDIR
3433     done
3434   ;;
3435 esac
3436 ],
3437 [subdirs='$subdirs'])
3438 AC_OUTPUT