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, 59 Temple Place - Suite 330, Boston, MA
  22 #02111-1307, 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 #Set to 1 on a release branch
  34 is_release=
  35
  36 # Determine the host, build, and target systems
  37 AC_CANONICAL_BUILD
  38 AC_CANONICAL_HOST
  39 AC_CANONICAL_TARGET
  40
  41 # Determine the noncanonical target name, for directory use.
  42 ACX_NONCANONICAL_TARGET
  43
  44 # Determine the target- and build-specific subdirectories
  45 GCC_TOPLEV_SUBDIRS
  46
  47 # Set program_transform_name
  48 AC_ARG_PROGRAM
  49
  50 # Check for bogus environment variables.
  51 # Test if LIBRARY_PATH contains the notation for the current directory
  52 # since this would lead to problems installing/building glibc.
  53 # LIBRARY_PATH contains the current directory if one of the following
  54 # is true:
  55 # - one of the terminals (":" and ";") is the first or last sign
  56 # - two terminals occur directly after each other
  57 # - the path contains an element with a dot in it
  58 AC_MSG_CHECKING(LIBRARY_PATH variable)
  59 changequote(,)dnl
  60 case ${LIBRARY_PATH} in
  61   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  62     library_path_setting="contains current directory"
  63     ;;
  64   *)
  65     library_path_setting="ok"
  66     ;;
  67 esac
  68 changequote([,])dnl
  69 AC_MSG_RESULT($library_path_setting)
  70 if test "$library_path_setting" != "ok"; then
  71 AC_MSG_ERROR([
  72 *** LIBRARY_PATH shouldn't contain the current directory when
  73 *** building gcc. Please change the environment variable
  74 *** and run configure again.])
  75 fi
  76
  77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  78 # since this would lead to problems installing/building glibc.
  79 # GCC_EXEC_PREFIX contains the current directory if one of the following
  80 # is true:
  81 # - one of the terminals (":" and ";") is the first or last sign
  82 # - two terminals occur directly after each other
  83 # - the path contains an element with a dot in it
  84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  85 changequote(,)dnl
  86 case ${GCC_EXEC_PREFIX} in
  87   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  88     gcc_exec_prefix_setting="contains current directory"
  89     ;;
  90   *)
  91     gcc_exec_prefix_setting="ok"
  92     ;;
  93 esac
  94 changequote([,])dnl
  95 AC_MSG_RESULT($gcc_exec_prefix_setting)
  96 if test "$gcc_exec_prefix_setting" != "ok"; then
  97 AC_MSG_ERROR([
  98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  99 *** building gcc. Please change the environment variable
 100 *** and run configure again.])
 101 fi
 102
 103 TL_AC_GCC_VERSION([$srcdir/..])
 104
 105 # -----------
 106 # Directories
 107 # -----------
 108
 109 # Specify the local prefix
 110 local_prefix=
 111 AC_ARG_WITH(local-prefix,
 112 [  --with-local-prefix=DIR specifies directory to put local include],
 113 [case "${withval}" in
 114 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 115 no)     ;;
 116 *)      local_prefix=$with_local_prefix ;;
 117 esac])
 118
 119 # Default local prefix if it is empty
 120 if test x$local_prefix = x; then
 121         local_prefix=/usr/local
 122 fi
 123
 124 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 125 # passed in by the toplevel make and thus we'd get different behavior
 126 # depending on where we built the sources.
 127 gcc_gxx_include_dir=
 128 # Specify the g++ header file directory
 129 AC_ARG_WITH(gxx-include-dir,
 130 [  --with-gxx-include-dir=DIR
 131                           specifies directory to put g++ header files],
 132 [case "${withval}" in
 133 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 134 no)     ;;
 135 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 136 esac])
 137
 138 if test x${gcc_gxx_include_dir} = x; then
 139   if test x${enable_version_specific_runtime_libs} = xyes; then
 140     gcc_gxx_include_dir='${libsubdir}/include/c++'
 141   else
 142     libstdcxx_incdir=c++/${gcc_version}
 143 changequote(<<, >>)dnl
 144     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 145 changequote([, ])dnl
 146   fi
 147 fi
 148
 149 AC_ARG_WITH(cpp_install_dir,
 150 [  --with-cpp-install-dir=DIR
 151                           install the user visible C preprocessor in DIR
 152                           (relative to PREFIX) as well as PREFIX/bin],
 153 [if test x$withval = xyes; then
 154   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 155 elif test x$withval != xno; then
 156   cpp_install_dir=$withval
 157 fi])
 158
 159 # We would like to our source tree to be readonly.  However when releases or
 160 # pre-releases are generated, the flex/bison generated files as well as the
 161 # various formats of manuals need to be included along with the rest of the
 162 # sources.  Therefore we have --enable-generated-files-in-srcdir to do
 163 # just that.
 164
 165 AC_MSG_CHECKING([whether to place generated files in the source directory])
 166   dnl generated-files-in-srcdir is disabled by default
 167   AC_ARG_ENABLE(generated-files-in-srcdir,
 168 [  --enable-generated-files-in-srcdir
 169                           put copies of generated files in source dir
 170                           intended for creating source tarballs for users
 171                           without texinfo bison or flex.],
 172       generated_files_in_srcdir=$enableval,
 173       generated_files_in_srcdir=no)
 174
 175 AC_MSG_RESULT($generated_files_in_srcdir)
 176
 177 if test "$generated_files_in_srcdir" = "yes"; then
 178   GENINSRC=''
 179 else
 180   GENINSRC='#'
 181 fi
 182 AC_SUBST(GENINSRC)
 183
 184 # -------------------
 185 # Find default linker
 186 # -------------------
 187
 188 # With GNU ld
 189 AC_ARG_WITH(gnu-ld,
 190 [  --with-gnu-ld           arrange to work with GNU ld.],
 191 gnu_ld_flag="$with_gnu_ld",
 192 gnu_ld_flag=no)
 193
 194 # With pre-defined ld
 195 AC_ARG_WITH(ld,
 196 [  --with-ld               arrange to use the specified ld (full pathname)],
 197 DEFAULT_LINKER="$with_ld")
 198 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 199   if test ! -x "$DEFAULT_LINKER"; then
 200     AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 201   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 202     gnu_ld_flag=yes
 203   fi
 204   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 205         [Define to enable the use of a default linker.])
 206 fi
 207
 208 AC_MSG_CHECKING([whether a default linker was specified])
 209 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 210   if test x"$gnu_ld_flag" = x"no"; then
 211     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 212   else
 213     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 214   fi
 215 else
 216   AC_MSG_RESULT(no)
 217 fi
 218
 219 # With demangler in GNU ld
 220 AC_ARG_WITH(demangler-in-ld,
 221 [  --with-demangler-in-ld  try to use demangler in GNU ld.],
 222 demangler_in_ld="$with_demangler_in_ld",
 223 demangler_in_ld=no)
 224
 225 # ----------------------
 226 # Find default assembler
 227 # ----------------------
 228
 229 # With GNU as
 230 AC_ARG_WITH(gnu-as,
 231 [  --with-gnu-as           arrange to work with GNU as],
 232 gas_flag="$with_gnu_as",
 233 gas_flag=no)
 234
 235 AC_ARG_WITH(as,
 236 [  --with-as               arrange to use the specified as (full pathname)],
 237 DEFAULT_ASSEMBLER="$with_as")
 238 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 239   if test ! -x "$DEFAULT_ASSEMBLER"; then
 240     AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 241   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 242     gas_flag=yes
 243   fi
 244   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 245         [Define to enable the use of a default assembler.])
 246 fi
 247
 248 AC_MSG_CHECKING([whether a default assembler was specified])
 249 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 250   if test x"$gas_flag" = x"no"; then
 251     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 252   else
 253     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 254   fi
 255 else
 256   AC_MSG_RESULT(no)
 257 fi
 258
 259 # ---------------
 260 # Find C compiler
 261 # ---------------
 262
 263 # If a non-executable a.out is present (e.g. created by GNU as above even if
 264 # invoked with -v only), the IRIX 6 native ld just overwrites the existing
 265 # file, even when creating an executable, so an execution test fails.
 266 # Remove possible default executable files to avoid this.
 267 #
 268 # FIXME: This really belongs into AC_PROG_CC and can be removed once
 269 # Autoconf includes it.
 270 rm -f a.out a.exe b.out
 271
 272 # Find the native compiler
 273 AC_PROG_CC
 274 AM_PROG_CC_C_O
 275 # autoconf is lame and doesn't give us any substitution variable for this.
 276 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 277   NO_MINUS_C_MINUS_O=yes
 278 else
 279   OUTPUT_OPTION='-o $@'
 280 fi
 281 AC_SUBST(NO_MINUS_C_MINUS_O)
 282 AC_SUBST(OUTPUT_OPTION)
 283
 284 # -------------------------
 285 # Check C compiler features
 286 # -------------------------
 287
 288 AC_PROG_CPP
 289 AC_C_INLINE
 290
 291 gcc_AC_C_LONG_LONG
 292
 293 # sizeof(char) is 1 by definition.
 294 AC_CHECK_SIZEOF(void *)
 295 AC_CHECK_SIZEOF(short)
 296 AC_CHECK_SIZEOF(int)
 297 AC_CHECK_SIZEOF(long)
 298 if test $ac_cv_c_long_long = yes; then
 299   AC_CHECK_SIZEOF(long long)
 300 fi
 301 if test $ac_cv_c___int64 = yes; then
 302   AC_CHECK_SIZEOF(__int64)
 303 fi
 304
 305 # ---------------------
 306 # Warnings and checking
 307 # ---------------------
 308
 309 # Check $CC warning features (if it's GCC).
 310 # We want to use -pedantic, but we don't want warnings about
 311 # * 'long long'
 312 # * variadic macros
 313 # So, we only use -pedantic if we can disable those warnings.
 314
 315 AC_CACHE_CHECK(
 316   [whether ${CC} accepts -Wno-long-long],
 317   [ac_cv_prog_cc_w_no_long_long],
 318   [save_CFLAGS="$CFLAGS"
 319   CFLAGS="-Wno-long-long"
 320   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 321                     [ac_cv_prog_cc_w_no_long_long=yes],
 322                     [ac_cv_prog_cc_w_no_long_long=no])
 323   CFLAGS="$save_CFLAGS"
 324   ])
 325
 326 AC_CACHE_CHECK(
 327   [whether ${CC} accepts -Wno-variadic-macros],
 328   [ac_cv_prog_cc_w_no_variadic_macros],
 329   [save_CFLAGS="$CFLAGS"
 330   CFLAGS="-Wno-variadic-macros"
 331   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 332                     [ac_cv_prog_cc_w_no_variadic_macros=yes],
 333                     [ac_cv_prog_cc_w_no_variadic_macros=no])
 334   CFLAGS="$save_CFLAGS"
 335   ])
 336
 337 strict1_warn=
 338 if test $ac_cv_prog_cc_w_no_long_long = yes \
 339    && test $ac_cv_prog_cc_w_no_variadic_macros = yes ; then
 340   strict1_warn="-pedantic -Wno-long-long -Wno-variadic-macros"
 341 fi
 342 AC_SUBST(strict1_warn)
 343
 344 # Add -Wold-style-definition if it's accepted
 345 AC_CACHE_CHECK(
 346   [whether ${CC} accepts -Wold-style-definition],
 347   [ac_cv_prog_cc_w_old_style_definition],
 348   [save_CFLAGS="$CFLAGS"
 349   CFLAGS="-Wold-style-definition"
 350   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 351                     [ac_cv_prog_cc_w_old_style_definition=yes],
 352                     [ac_cv_prog_cc_w_old_style_definition=no])
 353   CFLAGS="$save_CFLAGS"
 354   ])
 355 if test $ac_cv_prog_cc_w_old_style_definition = yes ; then
 356   strict1_warn="${strict1_warn} -Wold-style-definition"
 357 fi
 358
 359 # Enable -Werror, period.
 360 AC_ARG_ENABLE(werror_always,
 361 [  --enable-werror-always         enable -Werror always], [],
 362 [enable_werror_always=no])
 363 if test x${enable_werror_always} = xyes ; then
 364   strict1_warn="${strict1_warn} -Werror"
 365   WERROR=-Werror
 366 fi
 367
 368 # If the native compiler is GCC, we can enable warnings even in stage1.
 369 # That's useful for people building cross-compilers, or just running a
 370 # quick `make'.
 371 warn_cflags=
 372 if test "x$GCC" = "xyes"; then
 373   warn_cflags='$(GCC_WARN_CFLAGS)'
 374 fi
 375 AC_SUBST(warn_cflags)
 376
 377 # Enable -Werror in bootstrap stage2 and later.
 378 AC_ARG_ENABLE(werror,
 379 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
 380 [if test x$is_release = x ; then
 381   # Default to "yes" on development branches.
 382   enable_werror=yes
 383 else
 384   # Default to "no" on release branches.
 385   enable_werror=no
 386 fi])
 387 if test x$enable_werror = xyes ; then
 388   WERROR=-Werror
 389 fi
 390 AC_SUBST(WERROR)
 391
 392 # Enable expensive internal checks
 393 AC_ARG_ENABLE(checking,
 394 [  --enable-checking[=LIST]
 395                           enable expensive run-time checks.  With LIST,
 396                           enable only specific categories of checks.
 397                           Categories are: assert,fold,gc,gcac,misc,
 398                           rtlflag,rtl,tree,valgrind,release,yes,all;],
 399 [ac_checking_flags="${enableval}"],[
 400 # Determine the default checks.
 401 if test x$is_release = x ; then
 402   ac_checking_flags=yes
 403 else
 404   ac_checking_flags=release
 405 fi])
 406 ac_assert_checking=1
 407 ac_checking=
 408 ac_tree_checking=
 409 ac_rtl_checking=
 410 ac_rtlflag_checking=
 411 ac_gc_checking=
 412 ac_gc_always_collect=
 413 ac_fold_checking=
 414 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 415 for check in $ac_checking_flags
 416 do
 417         case $check in
 418         yes)            ac_assert_checking=1 ; ac_checking=1 ;
 419                         ac_tree_checking=1 ; ac_gc_checking=1 ;
 420                         ac_rtlflag_checking=1 ;;
 421         no)             ac_assert_checking= ; ac_checking= ;
 422                         ac_tree_checking= ; ac_rtl_checking= ;
 423                         ac_rtlflag_checking= ; ac_gc_checking= ;
 424                         ac_gc_always_collect= ; ac_fold_checking= ;;
 425         all)            ac_assert_checking=1 ; ac_checking=1 ;
 426                         ac_tree_checking=1 ; ac_rtl_checking=1 ;
 427                         ac_rtlflag_checking=1 ; ac_gc_checking=1 ;
 428                         ac_gc_always_collect=1 ; ac_fold_checking=1 ;;
 429         release)        ac_assert_checking=1 ;;
 430         assert)         ac_assert_checking=1 ;;
 431         fold)           ac_fold_checking=1 ;;
 432         gc)             ac_gc_checking=1 ;;
 433         gcac)           ac_gc_always_collect=1 ;;
 434         misc)           ac_checking=1 ;;
 435         rtlflag)        ac_rtlflag_checking=1 ;;
 436         rtl)            ac_rtl_checking=1 ;;
 437         tree)           ac_tree_checking=1 ;;
 438         valgrind)       ac_checking_valgrind=1 ;;
 439         *)      AC_MSG_ERROR(unknown check category $check) ;;
 440         esac
 441 done
 442 IFS="$ac_save_IFS"
 443
 444 nocommon_flag=""
 445 if test x$ac_checking != x ; then
 446   AC_DEFINE(ENABLE_CHECKING, 1,
 447 [Define if you want more run-time sanity checks.  This one gets a grab
 448    bag of miscellaneous but relatively cheap checks.])
 449   nocommon_flag=-fno-common
 450 fi
 451 AC_SUBST(nocommon_flag)
 452 if test x$ac_assert_checking != x ; then
 453   AC_DEFINE(ENABLE_ASSERT_CHECKING, 1,
 454 [Define if you want assertions enabled.  This is a cheap check.])
 455 fi
 456 if test x$ac_tree_checking != x ; then
 457   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 458 [Define if you want all operations on trees (the basic data
 459    structure of the front ends) to be checked for dynamic type safety
 460    at runtime.  This is moderately expensive.  The tree browser debugging
 461    routines will also be enabled by this option.
 462    ])
 463   TREEBROWSER=tree-browser.o
 464 fi
 465 AC_SUBST(TREEBROWSER)
 466 if test x$ac_rtl_checking != x ; then
 467   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 468 [Define if you want all operations on RTL (the basic data structure
 469    of the optimizer and back end) to be checked for dynamic type safety
 470    at runtime.  This is quite expensive.])
 471 fi
 472 if test x$ac_rtlflag_checking != x ; then
 473   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 474 [Define if you want RTL flag accesses to be checked against the RTL
 475    codes that are supported for each access macro.  This is relatively
 476    cheap.])
 477 fi
 478 if test x$ac_gc_checking != x ; then
 479   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 480 [Define if you want the garbage collector to do object poisoning and
 481    other memory allocation checks.  This is quite expensive.])
 482 fi
 483 if test x$ac_gc_always_collect != x ; then
 484   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 485 [Define if you want the garbage collector to operate in maximally
 486    paranoid mode, validating the entire heap and collecting garbage at
 487    every opportunity.  This is extremely expensive.])
 488 fi
 489 if test x$ac_fold_checking != x ; then
 490   AC_DEFINE(ENABLE_FOLD_CHECKING, 1,
 491 [Define if you want fold checked that it never destructs its argument.
 492    This is quite expensive.])
 493 fi
 494 valgrind_path_defines=
 495 valgrind_command=
 496
 497 dnl # This check AC_REQUIREs various stuff, so it *must not* be inside
 498 dnl # an if statement.  This was the source of very frustrating bugs
 499 dnl # in converting to autoconf 2.5x!
 500 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 501
 502 if test x$ac_checking_valgrind != x ; then
 503   # It is certainly possible that there's valgrind but no valgrind.h.
 504   # GCC relies on making annotations so we must have both.
 505   AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
 506   AC_TRY_CPP(
 507     [#include <valgrind/memcheck.h>
 508 #ifndef VALGRIND_DISCARD
 509 #error VALGRIND_DISCARD not defined
 510 #endif],
 511   [gcc_cv_header_valgrind_memcheck_h=yes],
 512   [gcc_cv_header_valgrind_memcheck_h=no])
 513   AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
 514   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 515   AC_TRY_CPP(
 516     [#include <memcheck.h>
 517 #ifndef VALGRIND_DISCARD
 518 #error VALGRIND_DISCARD not defined
 519 #endif],
 520   [gcc_cv_header_memcheck_h=yes],
 521   gcc_cv_header_memcheck_h=no)
 522   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 523   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 524         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 525   if test "x$valgrind_path" = "x" \
 526     || (test $have_valgrind_h = no \
 527         && test $gcc_cv_header_memcheck_h = no \
 528         && test $gcc_cv_header_valgrind_memcheck_h = no); then
 529         AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h])
 530   fi
 531   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 532   valgrind_command="$valgrind_path -q"
 533   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 534 [Define if you want to run subprograms and generated programs
 535    through valgrind (a memory checker).  This is extremely expensive.])
 536   if test $gcc_cv_header_valgrind_memcheck_h = yes; then
 537     AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
 538         [Define if valgrind's valgrind/memcheck.h header is installed.])
 539   fi
 540   if test $gcc_cv_header_memcheck_h = yes; then
 541     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 542         [Define if valgrind's memcheck.h header is installed.])
 543   fi
 544 fi
 545 AC_SUBST(valgrind_path_defines)
 546 AC_SUBST(valgrind_command)
 547
 548 AC_ARG_ENABLE(mapped-location,
 549 [  --enable-mapped-location   location_t is fileline integer cookie],,
 550 enable_mapped_location=no)
 551
 552 if test "$enable_mapped_location" = yes ; then
 553   AC_DEFINE(USE_MAPPED_LOCATION, 1,
 554 [Define if location_t is fileline integer cookie.])
 555 fi
 556
 557 # Enable code coverage collection
 558 AC_ARG_ENABLE(coverage,
 559 [  --enable-coverage[=LEVEL]
 560                           enable compiler's code coverage collection.
 561                           Use to measure compiler performance and locate
 562                           unused parts of the compiler. With LEVEL, specify
 563                           optimization. Values are opt, noopt,
 564                           default is noopt],
 565 [case "${enableval}" in
 566   yes|noopt)
 567     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0"
 568     ;;
 569   opt)
 570     coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2"
 571     ;;
 572   no)
 573     # a.k.a. --disable-coverage
 574     coverage_flags=""
 575     ;;
 576   *)
 577     AC_MSG_ERROR(unknown coverage setting $enableval)
 578     ;;
 579 esac],
 580 [coverage_flags=""])
 581 AC_SUBST(coverage_flags)
 582
 583 AC_ARG_ENABLE(gather-detailed-mem-stats,
 584 [  --enable-gather-detailed-mem-stats         enable detailed memory allocation stats gathering], [],
 585 [enable_gather_detailed_mem_stats=no])
 586 if test x$enable_gather_detailed_mem_stats = xyes ; then
 587   AC_DEFINE(GATHER_STATISTICS, 1,
 588         [Define to enable detailed memory allocation stats gathering.])
 589 fi
 590
 591 # -------------------------------
 592 # Miscenalleous configure options
 593 # -------------------------------
 594
 595 # With stabs
 596 AC_ARG_WITH(stabs,
 597 [  --with-stabs            arrange to use stabs instead of host debug format],
 598 stabs="$with_stabs",
 599 stabs=no)
 600
 601 # Determine whether or not multilibs are enabled.
 602 AC_ARG_ENABLE(multilib,
 603 [  --enable-multilib       enable library support for multiple ABIs],
 604 [], [enable_multilib=yes])
 605 AC_SUBST(enable_multilib)
 606
 607 # Enable __cxa_atexit for C++.
 608 AC_ARG_ENABLE(__cxa_atexit,
 609 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 610 [], [])
 611
 612 # Enable threads
 613 # Pass with no value to take the default
 614 # Pass with a value to specify a thread package
 615 AC_ARG_ENABLE(threads,
 616 [  --enable-threads        enable thread usage for target GCC
 617   --enable-threads=LIB    use LIB thread package for target GCC],,
 618 [enable_threads=''])
 619
 620 AC_ARG_ENABLE(objc-gc,
 621 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 622                           the GNU Objective-C runtime],
 623 if test x$enable_objc_gc = xno; then
 624         objc_boehm_gc=''
 625 else
 626         objc_boehm_gc=1
 627 fi,
 628 objc_boehm_gc='')
 629
 630 AC_ARG_WITH(dwarf2,
 631 [  --with-dwarf2           force the default debug format to be DWARF 2],
 632 dwarf2="$with_dwarf2",
 633 dwarf2=no)
 634
 635 AC_ARG_ENABLE(shared,
 636 [  --disable-shared        don't provide a shared libgcc],
 637 [
 638   case $enable_shared in
 639   yes | no) ;;
 640   *)
 641     enable_shared=no
 642     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 643     for pkg in $enableval; do
 644       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 645         enable_shared=yes
 646       fi
 647     done
 648     IFS="$ac_save_ifs"
 649     ;;
 650   esac
 651 ], [enable_shared=yes])
 652 AC_SUBST(enable_shared)
 653
 654 AC_ARG_WITH(sysroot,
 655 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 656 [
 657  case ${with_sysroot} in
 658  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;;
 659  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 660  esac
 661
 662  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 663  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
 664
 665  if test "x$exec_prefix" = xNONE; then
 666   if test "x$prefix" = xNONE; then
 667    test_prefix=/usr/local
 668   else
 669    test_prefix=$prefix
 670   fi
 671  else
 672   test_prefix=$exec_prefix
 673  fi
 674  case ${TARGET_SYSTEM_ROOT} in
 675  "${test_prefix}"|"${test_prefix}/"*|\
 676  '${exec_prefix}'|'${exec_prefix}/'*)
 677    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 678    TARGET_SYSTEM_ROOT_DEFINE="$t"
 679    ;;
 680  esac
 681 ], [
 682  TARGET_SYSTEM_ROOT=
 683  TARGET_SYSTEM_ROOT_DEFINE=
 684  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 685 ])
 686 AC_SUBST(TARGET_SYSTEM_ROOT)
 687 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 688 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 689
 690 # Build with intermodule optimisations
 691 AC_ARG_ENABLE(intermodule,
 692 [  --enable-intermodule    build the compiler in one step],
 693 [case ${enable_intermodule} in
 694   yes) onestep="-onestep";;
 695   *) onestep="";;
 696 esac],
 697 [onestep=""])
 698 AC_SUBST(onestep)
 699
 700 # Sanity check enable_languages in case someone does not run the toplevel
 701 # configure # script.
 702 AC_ARG_ENABLE(languages,
 703 [  --enable-languages=LIST specify which front-ends to build],
 704 [case ,${enable_languages}, in
 705        ,,|,yes,)
 706                 # go safe -- we cannot be much sure without the toplevel
 707                 # configure's
 708                 # analysis of which target libs are present and usable
 709                 enable_languages=c
 710                 ;;
 711          *,all,*)
 712                 AC_MSG_ERROR([only the toplevel supports --enable-languages=all])
 713                 ;;
 714         *,c,*)
 715                 ;;
 716         *)
 717                 enable_languages=c,${enable_languages}
 718                 ;;
 719 esac],
 720 [enable_languages=c])
 721
 722 subdirs=
 723 for lang in ${srcdir}/*/config-lang.in
 724 do
 725         case $lang in
 726         # The odd quoting in the next line works around
 727         # an apparent bug in bash 1.12 on linux.
 728 changequote(,)dnl
 729         ${srcdir}/[*]/config-lang.in) ;;
 730         *)
 731           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
 732           if test "x$lang_alias" = x
 733           then
 734                 echo "$lang doesn't set \$language." 1>&2
 735                 exit 1
 736           fi
 737           case ",$enable_languages," in
 738           *,$lang_alias,*)
 739             subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`" ;;
 740           esac
 741           ;;
 742 changequote([,])dnl
 743         esac
 744 done
 745
 746
 747 # -------------------------
 748 # Checks for other programs
 749 # -------------------------
 750
 751 AC_PROG_MAKE_SET
 752
 753 # Find some useful tools
 754 AC_PROG_AWK
 755 # We need awk to create options.c and options.h.
 756 # Bail out if it's missing.
 757 case ${AWK} in
 758   "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
 759 esac
 760
 761 gcc_AC_PROG_LN_S
 762 ACX_PROG_LN($LN_S)
 763 AC_PROG_RANLIB
 764 case "${host}" in
 765 *-*-darwin*)
 766   # By default, the Darwin ranlib will not treat common symbols as
 767   # definitions when  building the archive table of contents.  Other
 768   # ranlibs do that; pass an option to the Darwin ranlib that makes
 769   # it behave similarly.
 770   ranlib_flags="-c"
 771   ;;
 772 *)
 773   ranlib_flags=""
 774 esac
 775 AC_SUBST(ranlib_flags)
 776
 777 gcc_AC_PROG_INSTALL
 778
 779 # See if cmp has --ignore-initial.
 780 gcc_AC_PROG_CMP_IGNORE_INITIAL
 781
 782 # See if we have the mktemp command.
 783 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 784
 785 MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
 786
 787 # See if makeinfo has been installed and is modern enough
 788 # that we can use it.
 789 gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 790   [GNU texinfo.* \([0-9][0-9.]*\)],
 791   [4.[2-9]*])
 792 if test $gcc_cv_prog_makeinfo_modern = no; then
 793   MAKEINFO="$MISSING makeinfo"
 794   AC_MSG_WARN([
 795 *** Makeinfo is missing or too old.
 796 *** Info documentation will not be built.])
 797   BUILD_INFO=
 798 else
 799   BUILD_INFO=info
 800 fi
 801 AC_SUBST(BUILD_INFO)
 802
 803 # Is pod2man recent enough to regenerate manpages?
 804 AC_MSG_CHECKING([for recent Pod::Man])
 805 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 806   AC_MSG_RESULT(yes)
 807   GENERATED_MANPAGES=generated-manpages
 808 else
 809   AC_MSG_RESULT(no)
 810   GENERATED_MANPAGES=
 811 fi
 812 AC_SUBST(GENERATED_MANPAGES)
 813
 814 # How about lex?
 815 dnl Don't use AC_PROG_LEX; we insist on flex.
 816 dnl LEXLIB is not useful in gcc.
 817 AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
 818
 819 # Bison?
 820 AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
 821
 822 # Binutils are not build modules, unlike bison/flex/makeinfo.  So we
 823 # check for build == host before using them.
 824
 825 # NM
 826 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
 827   && test -d ../binutils ; then
 828   NM='$(objdir)/../binutils/nm-new'
 829 else
 830   AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm)
 831 fi
 832
 833 # AR
 834 if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \
 835   && test -d ../binutils ; then
 836   AR='$(objdir)/../binutils/ar'
 837 else
 838   AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar)
 839 fi
 840
 841
 842 # --------------------
 843 # Checks for C headers
 844 # --------------------
 845
 846 AC_MSG_CHECKING(for GNU C library)
 847 AC_CACHE_VAL(gcc_cv_glibc,
 848 [AC_TRY_COMPILE(
 849   [#include <features.h>],[
 850 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 851 #error Not a GNU C library system
 852 #endif],
 853   [gcc_cv_glibc=yes],
 854   gcc_cv_glibc=no)])
 855 AC_MSG_RESULT($gcc_cv_glibc)
 856 if test $gcc_cv_glibc = yes; then
 857   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 858 fi
 859
 860 # Need to reject headers which give warnings, so that the -Werror bootstrap
 861 # works later. *sigh*  This needs to come before all header checks.
 862 AC_PROG_CPP_WERROR
 863
 864 AC_HEADER_STDC
 865 AC_HEADER_TIME
 866 ACX_HEADER_STRING
 867 AC_HEADER_SYS_WAIT
 868 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \
 869                  fcntl.h unistd.h sys/file.h sys/time.h sys/mman.h \
 870                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 871                  direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h)
 872
 873 # Check for thread headers.
 874 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 875 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 876
 877 # These tests can't be done till we know if we have limits.h.
 878 gcc_AC_C_CHAR_BIT
 879 AC_C_BIGENDIAN_CROSS
 880
 881 # --------
 882 # UNSORTED
 883 # --------
 884
 885 # Stage specific cflags for build.
 886 stage1_cflags=
 887 case $build in
 888 vax-*-*)
 889   if test x$GCC = xyes
 890   then
 891     stage1_cflags="-Wa,-J"
 892   else
 893     stage1_cflags="-J"
 894   fi
 895   ;;
 896 powerpc-*-darwin*)
 897   # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
 898   # sources; use -no-cpp-precomp to get to GNU cpp.
 899   # Apple's GCC has bugs in designated initializer handling, so disable
 900   # that too.
 901   stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
 902   ;;
 903 esac
 904 AC_SUBST(stage1_cflags)
 905
 906 # These libraries may be used by collect2.
 907 # We may need a special search path to get them linked.
 908 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 909 [save_LIBS="$LIBS"
 910 for libs in '' -lld -lmld \
 911                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
 912                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
 913 do
 914         LIBS="$libs"
 915         AC_TRY_LINK_FUNC(ldopen,
 916                 [gcc_cv_collect2_libs="$libs"; break])
 917 done
 918 LIBS="$save_LIBS"
 919 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
 920 case $gcc_cv_collect2_libs in
 921         "none required")        ;;
 922         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
 923 esac
 924 AC_SUBST(COLLECT2_LIBS)
 925
 926 # When building Ada code on Alpha, we need exc_resume which is usually in
 927 # -lexc.  So test for it.
 928 save_LIBS="$LIBS"
 929 LIBS=
 930 AC_SEARCH_LIBS(exc_resume, exc)
 931 GNAT_LIBEXC="$LIBS"
 932 LIBS="$save_LIBS"
 933 AC_SUBST(GNAT_LIBEXC)
 934
 935 # Some systems put ldexp and frexp in libm instead of libc; assume
 936 # they're both in the same place.  jcf-dump needs them.
 937 save_LIBS="$LIBS"
 938 LIBS=
 939 AC_SEARCH_LIBS(ldexp, m)
 940 LDEXP_LIB="$LIBS"
 941 LIBS="$save_LIBS"
 942 AC_SUBST(LDEXP_LIB)
 943
 944 # Use <inttypes.h> only if it exists,
 945 # doesn't clash with <sys/types.h>, and declares intmax_t.
 946 AC_MSG_CHECKING(for inttypes.h)
 947 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 948 [AC_TRY_COMPILE(
 949   [#include <sys/types.h>
 950 #include <inttypes.h>],
 951   [intmax_t i = -1;],
 952   [gcc_cv_header_inttypes_h=yes],
 953   gcc_cv_header_inttypes_h=no)])
 954 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 955 if test $gcc_cv_header_inttypes_h = yes; then
 956   AC_DEFINE(HAVE_INTTYPES_H, 1,
 957         [Define if you have a working <inttypes.h> header file.])
 958 fi
 959
 960 dnl Disabled until we have a complete test for buggy enum bitfields.
 961 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 962
 963 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
 964         sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
 965         fwrite_unlocked fprintf_unlocked getrusage nl_langinfo \
 966         scandir alphasort gettimeofday mbstowcs wcswidth mmap mincore \
 967         setlocale)
 968
 969 if test x$ac_cv_func_mbstowcs = xyes; then
 970   AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works,
 971 [    AC_TRY_RUN([#include <stdlib.h>
 972 int main()
 973 {
 974   mbstowcs(0, "", 0);
 975   return 0;
 976 }],
 977     gcc_cv_func_mbstowcs_works=yes,
 978     gcc_cv_func_mbstowcs_works=no,
 979     gcc_cv_func_mbstowcs_works=yes)])
 980   if test x$gcc_cv_func_mbstowcs_works = xyes; then
 981     AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1,
 982   [Define this macro if mbstowcs does not crash when its
 983    first argument is NULL.])
 984   fi
 985 fi
 986
 987 AC_CHECK_TYPE(ssize_t, int)
 988
 989 # Try to determine the array type of the second argument of getgroups
 990 # for the target system (int or gid_t).
 991 AC_TYPE_GETGROUPS
 992 if test "${target}" = "${build}"; then
 993   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 994 else
 995   case "${target}" in
 996         # This condition may need some tweaking.  It should include all
 997         # targets where the array type of the second argument of getgroups
 998         # is int and the type of gid_t is not equivalent to int.
 999         *-*-sunos* | *-*-ultrix*)
1000                 TARGET_GETGROUPS_T=int
1001                 ;;
1002         *)
1003                 TARGET_GETGROUPS_T=gid_t
1004                 ;;
1005   esac
1006 fi
1007 AC_SUBST(TARGET_GETGROUPS_T)
1008
1009 gcc_AC_FUNC_PRINTF_PTR
1010 gcc_AC_FUNC_MMAP_BLACKLIST
1011
1012 case "${host}" in
1013 *-*-*vms*)
1014   # Under VMS, vfork works very differently than on Unix. The standard test
1015   # won't work, and it isn't easily adaptable. It makes more sense to
1016   # just force it.
1017   ac_cv_func_vfork_works=yes
1018   ;;
1019 esac
1020 AC_FUNC_VFORK
1021
1022 AM_ICONV
1023 # Until we have in-tree GNU iconv:
1024 LIBICONV_DEP=
1025 AC_SUBST(LIBICONV_DEP)
1026
1027 AM_LC_MESSAGES
1028
1029 AM_LANGINFO_CODESET
1030
1031 # We will need to find libiberty.h and ansidecl.h
1032 saved_CFLAGS="$CFLAGS"
1033 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
1034 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
1035         strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
1036         fprintf_unlocked strstr errno snprintf vasprintf \
1037         malloc realloc calloc free basename getopt clock getpagesize, , ,[
1038 #include "ansidecl.h"
1039 #include "system.h"])
1040
1041 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
1042 #include "ansidecl.h"
1043 #include "system.h"
1044 #ifdef HAVE_SYS_RESOURCE_H
1045 #include <sys/resource.h>
1046 #endif
1047 ])
1048
1049 AC_TRY_COMPILE([
1050 #include "ansidecl.h"
1051 #include "system.h"
1052 #ifdef HAVE_SYS_RESOURCE_H
1053 #include <sys/resource.h>
1054 #endif
1055 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
1056 [Define to \`long' if <sys/resource.h> doesn't define.])])
1057
1058 # On AIX 5.2, <ldfcn.h> conflicts with <fcntl.h>, as both define incompatible
1059 # FREAD and FWRITE macros.  Fortunately, for GCC's single usage of ldgetname
1060 # in collect2.c, <fcntl.h> isn't visible, but the configure test below needs
1061 # to undef these macros to get the correct value for HAVE_DECL_LDGETNAME.
1062 gcc_AC_CHECK_DECLS(ldgetname, , ,[
1063 #include "ansidecl.h"
1064 #include "system.h"
1065 #ifdef HAVE_LDFCN_H
1066 #undef FREAD
1067 #undef FWRITE
1068 #include <ldfcn.h>
1069 #endif
1070 ])
1071
1072 gcc_AC_CHECK_DECLS(times, , ,[
1073 #include "ansidecl.h"
1074 #include "system.h"
1075 #ifdef HAVE_SYS_TIMES_H
1076 #include <sys/times.h>
1077 #endif
1078 ])
1079
1080 # More time-related stuff.
1081 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
1082 AC_TRY_COMPILE([
1083 #include "ansidecl.h"
1084 #include "system.h"
1085 #ifdef HAVE_SYS_TIMES_H
1086 #include <sys/times.h>
1087 #endif
1088 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
1089 if test $ac_cv_struct_tms = yes; then
1090   AC_DEFINE(HAVE_STRUCT_TMS, 1,
1091   [Define if <sys/times.h> defines struct tms.])
1092 fi
1093
1094 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
1095 # revisit after autoconf 2.50.
1096 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
1097 AC_TRY_COMPILE([
1098 #include "ansidecl.h"
1099 #include "system.h"
1100 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
1101 if test $gcc_cv_type_clock_t = yes; then
1102   AC_DEFINE(HAVE_CLOCK_T, 1,
1103   [Define if <time.h> defines clock_t.])
1104 fi
1105
1106 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
1107 CFLAGS="$saved_CFLAGS"
1108
1109 gcc_AC_INITFINI_ARRAY
1110
1111 # mkdir takes a single argument on some systems.
1112 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
1113
1114 # File extensions
1115 manext='.1'
1116 objext='.o'
1117 AC_SUBST(manext)
1118 AC_SUBST(objext)
1119
1120 # With Setjmp/Longjmp based exception handling.
1121 AC_ARG_ENABLE(sjlj-exceptions,
1122 [  --enable-sjlj-exceptions
1123                           arrange to use setjmp/longjmp exception handling],
1124 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1125 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1126   [Define 0/1 to force the choice for exception handling model.])])
1127
1128 # For platforms with the unwind ABI which includes an unwind library,
1129 # libunwind, we can choose to use the system libunwind.
1130 AC_ARG_WITH(system-libunwind,
1131 [  --with-system-libunwind use installed libunwind])
1132
1133 # --------------------------------------------------------
1134 # Build, host, and target specific configuration fragments
1135 # --------------------------------------------------------
1136
1137 # Collect build-machine-specific information.
1138 . ${srcdir}/config.build
1139
1140 # Collect host-machine-specific information.
1141 . ${srcdir}/config.host
1142
1143 target_gtfiles=
1144
1145 # Collect target-machine-specific information.
1146 . ${srcdir}/config.gcc
1147
1148 extra_objs="${host_extra_objs} ${extra_objs}"
1149 extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}"
1150
1151 # Default the target-machine variables that were not explicitly set.
1152 if test x"$tm_file" = x
1153 then tm_file=$cpu_type/$cpu_type.h; fi
1154
1155 if test x"$extra_headers" = x
1156 then extra_headers=; fi
1157
1158 if test x$md_file = x
1159 then md_file=$cpu_type/$cpu_type.md; fi
1160
1161 if test x$out_file = x
1162 then out_file=$cpu_type/$cpu_type.c; fi
1163
1164 if test x"$tmake_file" = x
1165 then tmake_file=$cpu_type/t-$cpu_type
1166 fi
1167
1168 if test x"$dwarf2" = xyes
1169 then tm_file="$tm_file tm-dwarf2.h"
1170 fi
1171
1172 # Say what files are being used for the output code and MD file.
1173 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
1174 echo "Using \`$srcdir/config/$md_file' as machine description file."
1175
1176 # If any of the xm_file variables contain nonexistent files, warn
1177 # about them and drop them.
1178
1179 bx=
1180 for x in $build_xm_file; do
1181   if    test -f $srcdir/config/$x
1182   then      bx="$bx $x"
1183   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1184   fi
1185 done
1186 build_xm_file="$bx"
1187
1188 hx=
1189 for x in $host_xm_file; do
1190   if    test -f $srcdir/config/$x
1191   then      hx="$hx $x"
1192   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1193   fi
1194 done
1195 host_xm_file="$hx"
1196
1197 tx=
1198 for x in $xm_file; do
1199   if    test -f $srcdir/config/$x
1200   then      tx="$tx $x"
1201   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1202   fi
1203 done
1204 xm_file="$tx"
1205
1206 count=a
1207 for f in $tm_file; do
1208         count=${count}x
1209 done
1210 if test $count = ax; then
1211         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1212 else
1213         echo "Using the following target machine macro files:"
1214         for f in $tm_file; do
1215                 echo "  $srcdir/config/$f"
1216         done
1217 fi
1218
1219 if test x$need_64bit_hwint = xyes; then
1220         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1221 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1222 fi
1223
1224 if test x$use_long_long_for_widest_fast_int = xyes; then
1225         AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1,
1226 [Define to 1 if the 'long long' (or '__int64') is wider than 'long' but still
1227 efficiently supported by the host hardware.])
1228 fi
1229
1230 count=a
1231 for f in $host_xm_file; do
1232         count=${count}x
1233 done
1234 if test $count = a; then
1235         :
1236 elif test $count = ax; then
1237         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1238 else
1239         echo "Using the following host machine macro files:"
1240         for f in $host_xm_file; do
1241                 echo "  $srcdir/config/$f"
1242         done
1243 fi
1244 echo "Using ${out_host_hook_obj} for host machine hooks."
1245
1246 if test "$host_xm_file" != "$build_xm_file"; then
1247         count=a
1248         for f in $build_xm_file; do
1249                 count=${count}x
1250         done
1251         if test $count = a; then
1252                 :
1253         elif test $count = ax; then
1254                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1255         else
1256                 echo "Using the following build machine macro files:"
1257                 for f in $build_xm_file; do
1258                         echo "  $srcdir/config/$f"
1259                 done
1260         fi
1261 fi
1262
1263 # ---------
1264 # Threading
1265 # ---------
1266
1267 # Check if a valid thread package
1268 case ${enable_threads} in
1269   "" | no)
1270     # No threads
1271     target_thread_file='single'
1272     ;;
1273   yes)
1274     # default
1275     target_thread_file='single'
1276     ;;
1277   aix | dce | gnat | irix | posix | posix95 | rtems | \
1278   single | solaris | vxworks | win32 )
1279     target_thread_file=${enable_threads}
1280     ;;
1281   *)
1282     echo "${enable_threads} is an unknown thread package" 1>&2
1283     exit 1
1284     ;;
1285 esac
1286
1287 if test x${thread_file} = x; then
1288   # No thread file set by target-specific clauses in config.gcc,
1289   # so use file chosen by default logic above
1290   thread_file=${target_thread_file}
1291 fi
1292
1293 # Make gthr-default.h if we have a thread file.
1294 gthread_flags=
1295 if test $thread_file != single; then
1296   rm -f gthr-default.h
1297   echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1298   gthread_flags=-DHAVE_GTHR_DEFAULT
1299 fi
1300 AC_SUBST(gthread_flags)
1301
1302 # --------
1303 # UNSORTED
1304 # --------
1305
1306 use_cxa_atexit=no
1307 if test x$enable___cxa_atexit = xyes || \
1308    test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then
1309   if test x$host = x$target; then
1310     AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes],
1311         [echo "__cxa_atexit can't be enabled on this target"])
1312   else
1313     # We can't check for __cxa_atexit when building a cross, so assume
1314     # it is available
1315     use_cxa_atexit=yes
1316   fi
1317   if test x$use_cxa_atexit = xyes; then
1318     AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
1319       [Define if you want to use __cxa_atexit, rather than atexit, to
1320       register C++ destructors for local statics and global objects.
1321       This is essential for fully standards-compliant handling of
1322       destructors, but requires __cxa_atexit in libc.])
1323   fi
1324 fi
1325
1326 # Look for a file containing extra machine modes.
1327 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1328   extra_modes_file='$(srcdir)'/config/${extra_modes}
1329   AC_SUBST(extra_modes_file)
1330   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes",
1331   [Define to the name of a file containing a list of extra machine modes
1332    for this architecture.])
1333 fi
1334
1335 # auto-host.h is the file containing items generated by autoconf and is
1336 # the first file included by config.h.
1337 # If host=build, it is correct to have bconfig include auto-host.h
1338 # as well.  If host!=build, we are in error and need to do more
1339 # work to find out the build config parameters.
1340 if test x$host = x$build
1341 then
1342         build_auto=auto-host.h
1343 else
1344         # We create a subdir, then run autoconf in the subdir.
1345         # To prevent recursion we set host and build for the new
1346         # invocation of configure to the build for this invocation
1347         # of configure.
1348         tempdir=build.$$
1349         rm -rf $tempdir
1350         mkdir $tempdir
1351         cd $tempdir
1352         case ${srcdir} in
1353         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1354         *) realsrcdir=../${srcdir};;
1355         esac
1356         saved_CFLAGS="${CFLAGS}"
1357         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1358         ${realsrcdir}/configure \
1359                 --enable-languages=${enable_languages-all} \
1360                 --target=$target_alias --host=$build_alias --build=$build_alias
1361         CFLAGS="${saved_CFLAGS}"
1362
1363         # We just finished tests for the build machine, so rename
1364         # the file auto-build.h in the gcc directory.
1365         mv auto-host.h ../auto-build.h
1366         cd ..
1367         rm -rf $tempdir
1368         build_auto=auto-build.h
1369 fi
1370 AC_SUBST(build_subdir)
1371
1372 tm_file="${tm_file} defaults.h"
1373 tm_p_file="${tm_p_file} tm-preds.h"
1374 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1375 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1376 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1377 # put this back in temporarily.
1378 xm_file="ansidecl.h ${xm_file}"
1379
1380 # --------
1381 # UNSORTED
1382 # --------
1383
1384 changequote(,)dnl
1385 # Compile in configure arguments.
1386 if test -f configargs.h ; then
1387         # Being re-configured.
1388         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1389         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1390 else
1391         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1392 fi
1393
1394 # Double all backslashes and backslash all quotes to turn
1395 # gcc_config_arguments into a C string.
1396 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1397 $gcc_config_arguments
1398 EOF
1399 gcc_config_arguments_str=`cat conftest.out`
1400 rm -f conftest.out
1401
1402 cat > configargs.h <<EOF
1403 /* Generated automatically. */
1404 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1405 static const char thread_model[] = "$thread_file";
1406
1407 static const struct {
1408   const char *name, *value;
1409 } configure_default_options[] = $configure_default_options;
1410 EOF
1411 changequote([,])dnl
1412
1413 # Internationalization
1414 PACKAGE=gcc
1415 VERSION="$gcc_version"
1416 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1417   [The name of this program for internationalization purposes.])
1418 AC_SUBST(PACKAGE)
1419 AC_SUBST(VERSION)
1420
1421 ZW_GNU_GETTEXT_SISTER_DIR
1422
1423 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1424 # -liconv on the link line twice.
1425 case "$LIBINTL" in *$LIBICONV*)
1426         LIBICONV= ;;
1427 esac
1428
1429 # Windows32 Registry support for specifying GCC installation paths.
1430 AC_ARG_ENABLE(win32-registry,
1431 [  --disable-win32-registry
1432                           disable lookup of installation paths in the
1433                           Registry on Windows hosts
1434   --enable-win32-registry enable registry lookup (default)
1435   --enable-win32-registry=KEY
1436                           use KEY instead of GCC version as the last portion
1437                           of the registry key],,)
1438 case $host_os in
1439         win32 | pe | cygwin* | mingw32* | uwin*)
1440 AC_MSG_CHECKING(whether windows registry support is requested)
1441 if test "x$enable_win32_registry" != xno; then
1442   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1443 [Define to 1 if installation paths should be looked up in Windows32
1444    Registry. Ignored on non windows32 hosts.])
1445   AC_MSG_RESULT(yes)
1446   AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1447 else
1448   AC_MSG_RESULT(no)
1449 fi
1450
1451 # Check if user specified a different registry key.
1452 case "x${enable_win32_registry}" in
1453 x | xyes)
1454   # default.
1455   gcc_cv_win32_registry_key="$VERSION"
1456   ;;
1457 xno)
1458   # no registry lookup.
1459   gcc_cv_win32_registry_key=''
1460   ;;
1461 *)
1462   # user-specified key.
1463   gcc_cv_win32_registry_key="$enable_win32_registry"
1464   ;;
1465 esac
1466
1467 if test "x$enable_win32_registry" != xno; then
1468   AC_MSG_CHECKING(registry key on windows hosts)
1469   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1470         [Define to be the last portion of registry key on windows hosts.])
1471   AC_MSG_RESULT($gcc_cv_win32_registry_key)
1472 fi
1473 ;;
1474 esac
1475
1476 # Get an absolute path to the GCC top-level source directory
1477 holddir=`${PWDCMD-pwd}`
1478 cd $srcdir
1479 topdir=`${PWDCMD-pwd}`
1480 cd $holddir
1481
1482 # Conditionalize the makefile for this host machine.
1483 xmake_file=
1484 for f in ${host_xmake_file}
1485 do
1486         if test -f ${srcdir}/config/$f
1487         then
1488                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1489         fi
1490 done
1491
1492 # Conditionalize the makefile for this target machine.
1493 tmake_file_=
1494 for f in ${tmake_file}
1495 do
1496         if test -f ${srcdir}/config/$f
1497         then
1498                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1499         fi
1500 done
1501 tmake_file="${tmake_file_}"
1502
1503 # If the host doesn't support symlinks, modify CC in
1504 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1505 # Otherwise, we can use "CC=$(CC)".
1506 rm -f symtest.tem
1507 case "$LN_S" in
1508         *-s*)
1509                 cc_set_by_configure="\$(CC)"
1510                 quoted_cc_set_by_configure="\$(CC)"
1511                 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1512                 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1513                 ;;
1514         *)
1515                 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1516                 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1517                 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1518                 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1519                 ;;
1520 esac
1521
1522 # This is a terrible hack which will go away some day.
1523 host_cc_for_libada=${CC}
1524 AC_SUBST(host_cc_for_libada)
1525
1526 out_object_file=`basename $out_file .c`.o
1527
1528 tm_file_list=
1529 tm_include_list=
1530 for f in $tm_file; do
1531   case $f in
1532     defaults.h )
1533        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1534        tm_include_list="${tm_include_list} $f"
1535        ;;
1536     * )
1537        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1538        tm_include_list="${tm_include_list} config/$f"
1539        ;;
1540   esac
1541 done
1542
1543 tm_p_file_list=
1544 tm_p_include_list=
1545 for f in $tm_p_file; do
1546   case $f in
1547     tm-preds.h )
1548        tm_p_file_list="${tm_p_file_list} $f"
1549        tm_p_include_list="${tm_p_include_list} $f"
1550        ;;
1551     * )
1552        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1553        tm_p_include_list="${tm_p_include_list} config/$f"
1554   esac
1555 done
1556
1557 xm_file_list=
1558 xm_include_list=
1559 for f in $xm_file; do
1560   case $f in
1561     ansidecl.h )
1562        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1563        xm_include_list="${xm_include_list} $f"
1564        ;;
1565     auto-host.h )
1566        xm_file_list="${xm_file_list} $f"
1567        xm_include_list="${xm_include_list} $f"
1568        ;;
1569     * )
1570        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1571        xm_include_list="${xm_include_list} config/$f"
1572        ;;
1573   esac
1574 done
1575
1576 host_xm_file_list=
1577 host_xm_include_list=
1578 for f in $host_xm_file; do
1579   case $f in
1580     ansidecl.h )
1581        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1582        host_xm_include_list="${host_xm_include_list} $f"
1583        ;;
1584     auto-host.h )
1585        host_xm_file_list="${host_xm_file_list} $f"
1586        host_xm_include_list="${host_xm_include_list} $f"
1587        ;;
1588     * )
1589        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1590        host_xm_include_list="${host_xm_include_list} config/$f"
1591        ;;
1592   esac
1593 done
1594
1595 build_xm_file_list=
1596 for f in $build_xm_file; do
1597   case $f in
1598     ansidecl.h )
1599        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1600        build_xm_include_list="${build_xm_include_list} $f"
1601        ;;
1602     auto-build.h | auto-host.h )
1603        build_xm_file_list="${build_xm_file_list} $f"
1604        build_xm_include_list="${build_xm_include_list} $f"
1605        ;;
1606     * )
1607        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1608        build_xm_include_list="${build_xm_include_list} config/$f"
1609        ;;
1610   esac
1611 done
1612
1613 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1614 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1615 CROSS=                                          AC_SUBST(CROSS)
1616 ALL=all.internal                                AC_SUBST(ALL)
1617 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1618 if test x$host != x$target
1619 then
1620         CROSS="-DCROSS_COMPILE"
1621         ALL=all.cross
1622         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1623         case "$host","$target" in
1624         # Darwin crosses can use the host system's libraries and headers,
1625         # because of the fat library support.  Of course, it must be the
1626         # same version of Darwin on both sides.  Allow the user to
1627         # just say --target=foo-darwin without a version number to mean
1628         # "the version on this system".
1629             *-*-darwin*,*-*-darwin*)
1630                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1631                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1632                 if test $hostos = $targetos -o $targetos = darwin ; then
1633                     CROSS=
1634                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1635                     with_headers=yes
1636                 fi
1637                 ;;
1638
1639             i?86-*-*,x86_64-*-* \
1640             | powerpc*-*-*,powerpc64*-*-*)
1641                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1642         esac
1643 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1644         # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1645         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1646 fi
1647
1648 # If this is a cross-compiler that does not
1649 # have its own set of headers then define
1650 # inhibit_libc
1651
1652 # If this is using newlib, without having the headers available now,
1653 # then define inhibit_libc in LIBGCC2_CFLAGS.
1654 # This prevents libgcc2 from containing any code which requires libc
1655 # support.
1656 inhibit_libc=
1657 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1658        test x$with_newlib = xyes ; } &&
1659      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1660        inhibit_libc=-Dinhibit_libc
1661 fi
1662 AC_SUBST(inhibit_libc)
1663
1664 # When building gcc with a cross-compiler, we need to adjust things so
1665 # that the generator programs are still built with the native compiler.
1666 # Also, we cannot run fixincludes or fix-header.
1667
1668 # These are the normal (build=host) settings:
1669 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
1670 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1671 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1672
1673 # Possibly disable fixproto, on a per-target basis.
1674 case ${use_fixproto} in
1675   no)
1676     STMP_FIXPROTO=
1677     ;;
1678   yes)
1679     STMP_FIXPROTO=stmp-fixproto
1680     ;;
1681 esac
1682 AC_SUBST(STMP_FIXPROTO)
1683
1684 # And these apply if build != host, or we are generating coverage data
1685 if test x$build != x$host || test "x$coverage_flags" != x
1686 then
1687     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1688
1689     if test "x$TARGET_SYSTEM_ROOT" = x; then
1690         if [ "x$STMP_FIXPROTO" != x ] ; then
1691           STMP_FIXPROTO=stmp-install-fixproto
1692         fi
1693     fi
1694 fi
1695
1696 # Expand extra_headers to include complete path.
1697 # This substitutes for lots of t-* files.
1698 extra_headers_list=
1699 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1700 for file in ${extra_headers} ; do
1701   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1702 done
1703
1704 # Define collect2 in Makefile.
1705 case $host_can_use_collect2 in
1706   no) collect2= ;;
1707   *) collect2='collect2$(exeext)' ;;
1708 esac
1709 AC_SUBST([collect2])
1710
1711 # Add a definition of USE_COLLECT2 if system wants one.
1712 case $use_collect2 in
1713   no) use_collect2= ;;
1714   "") ;;
1715   *)
1716     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1717     xm_defines="${xm_defines} USE_COLLECT2"
1718     case $host_can_use_collect2 in
1719       no)
1720         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1721         ;;
1722     esac
1723     ;;
1724 esac
1725
1726 # ---------------------------
1727 # Assembler & linker features
1728 # ---------------------------
1729
1730 # Identify the assembler which will work hand-in-glove with the newly
1731 # built GCC, so that we can examine its features.  This is the assembler
1732 # which will be driven by the driver program.
1733 #
1734 # If build != host, and we aren't building gas in-tree, we identify a
1735 # build->target assembler and hope that it will have the same features
1736 # as the host->target assembler we'll be using.
1737 AC_MSG_CHECKING(what assembler to use)
1738 in_tree_gas=no
1739 gcc_cv_as=
1740 gcc_cv_gas_major_version=
1741 gcc_cv_gas_minor_version=
1742 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1743 if test -x "$DEFAULT_ASSEMBLER"; then
1744         gcc_cv_as="$DEFAULT_ASSEMBLER"
1745 elif test -x as$build_exeext; then
1746         # Build using assembler in the current directory.
1747         gcc_cv_as=./as$build_exeext
1748 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1749      && test -f ../gas/Makefile \
1750      && test x$build = x$host; then
1751   # Single tree build which includes gas.  We want to prefer it
1752   # over whatever linker top-level may have detected, since
1753   # we'll use what we're building after installation anyway.
1754   in_tree_gas=yes
1755   _gcc_COMPUTE_GAS_VERSION
1756   rm -f as$build_exeext
1757   $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1758   in_tree_gas_is_elf=no
1759   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1760      || (grep 'obj_format = multi' ../gas/Makefile \
1761          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1762   then
1763     in_tree_gas_is_elf=yes
1764   fi
1765 m4_pattern_allow([AS_FOR_TARGET])dnl
1766 elif test -x "$AS_FOR_TARGET"; then
1767         gcc_cv_as="$AS_FOR_TARGET"
1768 elif test -x "$AS" && test x$host = x$target; then
1769         gcc_cv_as="$AS"
1770 fi
1771
1772 if test "x$gcc_cv_as" = x; then
1773         # Search the same directories that the installed compiler will
1774         # search.  Else we may find the wrong assembler and lose.  If we
1775         # do not find a suitable assembler binary, then try the user's
1776         # path.
1777         #
1778         # Also note we have to check MD_EXEC_PREFIX before checking the
1779         # user's path.  Unfortunately, there is no good way to get at the
1780         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1781         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1782         # to be fixed as part of the make/configure rewrite too.
1783
1784         if test "x$exec_prefix" = xNONE; then
1785                 if test "x$prefix" = xNONE; then
1786                         test_prefix=/usr/local
1787                 else
1788                         test_prefix=$prefix
1789                 fi
1790         else
1791                 test_prefix=$exec_prefix
1792         fi
1793
1794         # If the loop below does not find an assembler, then use whatever
1795         # one we can find in the users's path.
1796         # user's path.
1797         if test "x$program_prefix" != xNONE; then
1798                 gcc_cv_as=${program_prefix}as$build_exeext
1799         else
1800                 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1801         fi
1802
1803         if test x$host = x$build; then
1804             test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1805                        $test_prefix/libexec/gcc/$target_noncanonical \
1806                        /usr/lib/gcc/$target_noncanonical/$gcc_version \
1807                        /usr/lib/gcc/$target_noncanonical \
1808                        $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1809                        $test_prefix/$target_noncanonical/bin"
1810         else
1811             test_dirs=
1812         fi
1813
1814         if test x$host = x$target; then
1815             test_dirs="$test_dirs \
1816                    /usr/libexec \
1817                    /usr/ccs/gcc \
1818                    /usr/ccs/bin \
1819                    /udk/usr/ccs/bin \
1820                    /bsd43/usr/lib/cmplrs/cc \
1821                    /usr/cross64/usr/bin \
1822                    /usr/lib/cmplrs/cc \
1823                    /sysv/usr/lib/cmplrs/cc \
1824                    /svr4/usr/lib/cmplrs/cc \
1825                    /usr/bin"
1826         fi
1827
1828         for dir in $test_dirs; do
1829                 if test -x $dir/as$build_exeext; then
1830                         gcc_cv_as=$dir/as$build_exeext
1831                         break;
1832                 fi
1833         done
1834 fi
1835 case $in_tree_gas in
1836   yes)
1837     AC_MSG_RESULT("newly built gas")
1838     ;;
1839   no)
1840     AC_MSG_RESULT($gcc_cv_as)
1841     ;;
1842 esac
1843
1844 # Identify the linker which will work hand-in-glove with the newly
1845 # built GCC, so that we can examine its features.  This is the linker
1846 # which will be driven by the driver program.
1847 #
1848 # If build != host, and we aren't building gas in-tree, we identify a
1849 # build->target linker and hope that it will have the same features
1850 # as the host->target linker we'll be using.
1851 AC_MSG_CHECKING(what linker to use)
1852 in_tree_ld=no
1853 gcc_cv_ld=
1854 gcc_cv_gld_major_version=
1855 gcc_cv_gld_minor_version=
1856 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1857 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1858 if test -x "$DEFAULT_LINKER"; then
1859         gcc_cv_ld="$DEFAULT_LINKER"
1860 elif test -x collect-ld$build_exeext; then
1861         # Build using linker in the current directory.
1862         gcc_cv_ld=./collect-ld$build_exeext
1863 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1864      && test -f ../ld/Makefile \
1865      && test x$build = x$host; then
1866         # Single tree build which includes ld.  We want to prefer it
1867         # over whatever linker top-level may have detected, since
1868         # we'll use what we're building after installation anyway.
1869         in_tree_ld=yes
1870         in_tree_ld_is_elf=no
1871         if (grep 'EMUL = .*elf' ../ld/Makefile \
1872             || grep 'EMUL = .*linux' ../ld/Makefile \
1873             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1874           in_tree_ld_is_elf=yes
1875         fi
1876         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
1877         do
1878 changequote(,)dnl
1879                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1880 changequote([,])dnl
1881                 if test x$gcc_cv_gld_version != x; then
1882                         break
1883                 fi
1884         done
1885 changequote(,)dnl
1886         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1887         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1888 changequote([,])dnl
1889         rm -f collect-ld$build_exeext
1890         $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1891 elif test -x "$LD_FOR_TARGET"; then
1892         gcc_cv_ld="$LD_FOR_TARGET"
1893 elif test -x "$LD" && test x$host = x$target; then
1894         gcc_cv_ld="$LD"
1895 fi
1896
1897 if test "x$gcc_cv_ld" = x; then
1898         # Search the same directories that the installed compiler will
1899         # search.  Else we may find the wrong linker and lose.  If we
1900         # do not find a suitable linker binary, then try the user's
1901         # path.
1902         #
1903         # Also note we have to check MD_EXEC_PREFIX before checking the
1904         # user's path.  Unfortunately, there is no good way to get at the
1905         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1906         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1907         # to be fixed as part of the make/configure rewrite too.
1908
1909         if test "x$exec_prefix" = xNONE; then
1910                 if test "x$prefix" = xNONE; then
1911                         test_prefix=/usr/local
1912                 else
1913                         test_prefix=$prefix
1914                 fi
1915         else
1916                 test_prefix=$exec_prefix
1917         fi
1918
1919         # If the loop below does not find an linker, then use whatever
1920         # one we can find in the users's path.
1921         # user's path.
1922         if test "x$program_prefix" != xNONE; then
1923                 gcc_cv_ld=${program_prefix}ld$build_exeext
1924         else
1925                 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1926         fi
1927
1928         if test x$host = x$build; then
1929             test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1930                        $test_prefix/libexec/gcc/$target_noncanonical \
1931                        /usr/lib/gcc/$target_noncanonical/$gcc_version \
1932                        /usr/lib/gcc/$target_noncanonical \
1933                        $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1934                        $test_prefix/$target_noncanonical/bin"
1935         else
1936             test_dirs=
1937         fi
1938
1939         if test x$host = x$target; then
1940             test_dirs="$test_dirs \
1941                    /usr/libexec \
1942                    /usr/ccs/gcc \
1943                    /usr/ccs/bin \
1944                    /udk/usr/ccs/bin \
1945                    /bsd43/usr/lib/cmplrs/cc \
1946                    /usr/cross64/usr/bin \
1947                    /usr/lib/cmplrs/cc \
1948                    /sysv/usr/lib/cmplrs/cc \
1949                    /svr4/usr/lib/cmplrs/cc \
1950                    /usr/bin"
1951         fi
1952
1953         for dir in $test_dirs; do
1954                 if test -x $dir/ld$build_exeext; then
1955                         gcc_cv_ld=$dir/ld$build_exeext
1956                         break;
1957                 fi
1958         done
1959 fi
1960 case $in_tree_ld in
1961   yes)
1962     AC_MSG_RESULT("newly built ld")
1963     ;;
1964   no)
1965     AC_MSG_RESULT($gcc_cv_ld)
1966     ;;
1967 esac
1968
1969 # Figure out what nm we will be using.
1970 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1971 AC_MSG_CHECKING(what nm to use)
1972 in_tree_nm=no
1973 if test -x nm$build_exeext; then
1974         gcc_cv_nm=./nm$build_exeext
1975 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1976      && test -f ../binutils/Makefile; then
1977         # Single tree build which includes binutils.
1978         in_tree_nm=yes
1979         gcc_cv_nm=./nm$build_exeext
1980         rm -f nm$build_exeext
1981         $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1982 elif test "x$program_prefix" != xNONE; then
1983         gcc_cv_nm=${program_prefix}nm$build_exeext
1984 else
1985         gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1986 fi
1987 case $in_tree_nm in
1988   yes) AC_MSG_RESULT("newly built nm") ;;
1989   no)  AC_MSG_RESULT($gcc_cv_nm) ;;
1990 esac
1991
1992 # Figure out what objdump we will be using.
1993 AC_MSG_CHECKING(what objdump to use)
1994 in_tree_objdump=no
1995 if test -x objdump$build_exeext; then
1996         gcc_cv_objdump=./objdump$build_exeext
1997 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1998      && test -f ../binutils/Makefile; then
1999         # Single tree build which includes binutils.
2000         in_tree_objdump=yes
2001         gcc_cv_objdump=./objdump$build_exeext
2002         rm -f objdump$build_exeext
2003         $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2004 elif test "x$program_prefix" != xNONE; then
2005         gcc_cv_objdump=${program_prefix}objdump$build_exeext
2006 else
2007         gcc_cv_objdump=`echo objdump | \
2008                 sed "${program_transform_name}"`$build_exeext
2009 fi
2010 case $in_tree_objdump in
2011   yes) AC_MSG_RESULT("newly built objdump") ;;
2012   no)  AC_MSG_RESULT($gcc_cv_objdump) ;;
2013 esac
2014
2015 # Figure out what assembler alignment features are present.
2016 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2017  [2,6,0],,
2018 [.balign 4
2019 .p2align 2],,
2020 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2021   [Define if your assembler supports .balign and .p2align.])])
2022
2023 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2024  [2,8,0],,
2025  [.p2align 4,,7],,
2026 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2027   [Define if your assembler supports specifying the maximum number
2028    of bytes to skip when using the GAS .p2align command.])])
2029
2030 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2031  [elf,2,9,0],,
2032  [conftest_label1: .word 0
2033 .subsection -1
2034 conftest_label2: .word 0
2035 .previous],
2036  [if test x$gcc_cv_nm != x; then
2037     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2038     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2039     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2040     then :
2041     else gcc_cv_as_subsection_m1=yes
2042     fi
2043     rm -f conftest.nm1 conftest.nm2
2044   fi],
2045  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2046   [Define if your assembler supports .subsection and .subsection -1 starts
2047    emitting at the beginning of your section.])])
2048
2049 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2050  [2,2,0],,
2051  [      .weak foobar],,
2052 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2053
2054 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2055  [2,15,91],,
2056  [      .SPACE $TEXT$
2057         .NSUBSPA $CODE$,COMDAT],,
2058 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2059
2060 # .hidden needs to be supported in both the assembler and the linker,
2061 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2062 # This is irritatingly difficult to feature test for; we have to check the
2063 # date string after the version number.  If we've got an in-tree
2064 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2065 # to be safe.
2066 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2067 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2068  [elf,2,13,0],,
2069 [       .hidden foobar
2070 foobar:])
2071
2072 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2073 [if test $in_tree_ld = yes ; then
2074   gcc_cv_ld_hidden=no
2075   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2076      && test $in_tree_ld_is_elf = yes; then
2077      gcc_cv_ld_hidden=yes
2078   fi
2079 else
2080   gcc_cv_ld_hidden=yes
2081   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2082   if echo "$ld_ver" | grep GNU > /dev/null; then
2083 changequote(,)dnl
2084     ld_vers=`echo $ld_ver | sed -n \
2085         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2086         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2087         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2088         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)[  ].*$,\1,p' \
2089         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[     ].*$,\1,p' \
2090         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[        ].*$,\1,p'`
2091     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2092     if test 0"$ld_date" -lt 20020404; then
2093       if test -n "$ld_date"; then
2094         # If there was date string, but was earlier than 2002-04-04, fail
2095         gcc_cv_ld_hidden=no
2096       elif test -z "$ld_vers"; then
2097         # If there was no date string nor ld version number, something is wrong
2098         gcc_cv_ld_hidden=no
2099       else
2100         ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2101         ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2102         ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2103         test -z "$ld_vers_patch" && ld_vers_patch=0
2104         if test "$ld_vers_major" -lt 2; then
2105           gcc_cv_ld_hidden=no
2106         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2107           gcc_cv_ld_hidden="no"
2108         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2109           gcc_cv_ld_hidden=no
2110         fi
2111       fi
2112 changequote([,])dnl
2113     fi
2114   else
2115     case "${target}" in
2116       hppa64*-*-hpux* | ia64*-*-hpux*)
2117         gcc_cv_ld_hidden=yes
2118         ;;
2119       *)
2120         gcc_cv_ld_hidden=no
2121         ;;
2122     esac
2123   fi
2124 fi])
2125 libgcc_visibility=no
2126 AC_SUBST(libgcc_visibility)
2127 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2128   libgcc_visibility=yes
2129   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2130   [Define if your assembler and linker support .hidden.])
2131 fi
2132
2133 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2134 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2135   [elf,2,11,0],,
2136 [       .data
2137         .uleb128 L2 - L1
2138 L1:
2139         .uleb128 1280
2140         .sleb128 -1010
2141 L2:],
2142  [# GAS versions before 2.11 do not support uleb128,
2143   # despite appearing to.
2144   # ??? There exists an elf-specific test that will crash
2145   # the assembler.  Perhaps it's better to figure out whether
2146   # arbitrary sections are supported and try the test.
2147   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2148   if echo "$as_ver" | grep GNU > /dev/null; then
2149 changequote(,)dnl
2150     as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2151     as_major=`echo $as_ver | sed 's/\..*//'`
2152     as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2153 changequote([,])dnl
2154     if test $as_major -eq 2 && test $as_minor -lt 11
2155     then :
2156     else gcc_cv_as_leb128=yes
2157     fi
2158   fi],
2159   [AC_DEFINE(HAVE_AS_LEB128, 1,
2160     [Define if your assembler supports .sleb128 and .uleb128.])])
2161
2162 # GAS versions up to and including 2.11.0 may mis-optimize
2163 # .eh_frame data.
2164 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2165   [elf,2,12,0],,
2166 [       .text
2167 .LFB1:
2168         .4byte  0
2169 .L1:
2170         .4byte  0
2171 .LFE1:
2172         .section        .eh_frame,"aw",@progbits
2173 __FRAME_BEGIN__:
2174         .4byte  .LECIE1-.LSCIE1
2175 .LSCIE1:
2176         .4byte  0x0
2177         .byte   0x1
2178         .ascii "z\0"
2179         .byte   0x1
2180         .byte   0x78
2181         .byte   0x1a
2182         .byte   0x0
2183         .byte   0x4
2184         .4byte  1
2185         .p2align 1
2186 .LECIE1:
2187 .LSFDE1:
2188         .4byte  .LEFDE1-.LASFDE1
2189 .LASFDE1:
2190         .4byte  .LASFDE1-__FRAME_BEGIN__
2191         .4byte  .LFB1
2192         .4byte  .LFE1-.LFB1
2193         .byte   0x4
2194         .4byte  .LFE1-.LFB1
2195         .byte   0x4
2196         .4byte  .L1-.LFB1
2197 .LEFDE1:],
2198 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2199 cat > conftest.lit <<EOF
2200  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2201  0010 01000000 12000000 18000000 00000000  ................
2202  0020 08000000 04080000 0044               .........D      @&t@
2203 EOF
2204 cat > conftest.big <<EOF
2205  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2206  0010 00000001 00000012 00000018 00000000  ................
2207  0020 00000008 04000000 0844               .........D      @&t@
2208 EOF
2209   # If the assembler didn't choke, and we can objdump,
2210   # and we got the correct data, then succeed.
2211   if test x$gcc_cv_objdump != x \
2212   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2213      | tail -3 > conftest.got \
2214   && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2215     || cmp conftest.big conftest.got > /dev/null 2>&1; }
2216   then
2217     gcc_cv_as_eh_frame=yes
2218   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2219     gcc_cv_as_eh_frame=buggy
2220   else
2221     # Uh oh, what do we do now?
2222     gcc_cv_as_eh_frame=no
2223   fi])
2224
2225 if test $gcc_cv_as_eh_frame = buggy; then
2226   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2227   [Define if your assembler mis-optimizes .eh_frame data.])
2228 fi
2229
2230 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2231  [elf,2,12,0], [--fatal-warnings],
2232  [.section .rodata.str, "aMS", @progbits, 1])
2233 if test $gcc_cv_as_shf_merge = no; then
2234   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2235     [elf,2,12,0], [--fatal-warnings],
2236     [.section .rodata.str, "aMS", %progbits, 1])
2237 fi
2238 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2239   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2240 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2241
2242 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2243  [elf,2,15,91], [--fatal-warnings],
2244  [.section .text,"axG",@progbits,.foo,comdat])
2245 if test $gcc_cv_as_comdat_group = yes; then
2246   gcc_cv_as_comdat_group_percent=no
2247 else
2248  gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2249    [elf,2,15,91], [--fatal-warnings],
2250    [.section .text,"axG",%progbits,.foo,comdat])
2251 fi
2252 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2253   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2254 [Define 0/1 if your assembler supports COMDAT group.])
2255
2256 # Thread-local storage - the check is heavily parametrized.
2257 conftest_s=
2258 tls_first_major=
2259 tls_first_minor=
2260 tls_as_opt=
2261 case "$target" in
2262 changequote(,)dnl
2263   alpha*-*-*)
2264     conftest_s='
2265         .section ".tdata","awT",@progbits
2266 foo:    .long   25
2267         .text
2268         ldq     $27,__tls_get_addr($29)         !literal!1
2269         lda     $16,foo($29)                    !tlsgd!1
2270         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2271         ldq     $27,__tls_get_addr($29)         !literal!2
2272         lda     $16,foo($29)                    !tlsldm!2
2273         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2274         ldq     $1,foo($29)                     !gotdtprel
2275         ldah    $2,foo($29)                     !dtprelhi
2276         lda     $3,foo($2)                      !dtprello
2277         lda     $4,foo($29)                     !dtprel
2278         ldq     $1,foo($29)                     !gottprel
2279         ldah    $2,foo($29)                     !tprelhi
2280         lda     $3,foo($2)                      !tprello
2281         lda     $4,foo($29)                     !tprel'
2282         tls_first_major=2
2283         tls_first_minor=13
2284         tls_as_opt=--fatal-warnings
2285         ;;
2286   frv*-*-*)
2287     conftest_s='
2288         .section ".tdata","awT",@progbits
2289 x:      .long   25
2290         .text
2291         call    #gettlsoff(x)'
2292         tls_first_major=2
2293         tls_first_minor=14
2294         ;;
2295   i[34567]86-*-*)
2296     conftest_s='
2297         .section ".tdata","awT",@progbits
2298 foo:    .long   25
2299         .text
2300         movl    %gs:0, %eax
2301         leal    foo@TLSGD(,%ebx,1), %eax
2302         leal    foo@TLSLDM(%ebx), %eax
2303         leal    foo@DTPOFF(%eax), %edx
2304         movl    foo@GOTTPOFF(%ebx), %eax
2305         subl    foo@GOTTPOFF(%ebx), %eax
2306         addl    foo@GOTNTPOFF(%ebx), %eax
2307         movl    foo@INDNTPOFF, %eax
2308         movl    $foo@TPOFF, %eax
2309         subl    $foo@TPOFF, %eax
2310         leal    foo@NTPOFF(%ecx), %eax'
2311         tls_first_major=2
2312         tls_first_minor=14
2313         tls_as_opt=--fatal-warnings
2314         ;;
2315   x86_64-*-*)
2316     conftest_s='
2317         .section ".tdata","awT",@progbits
2318 foo:    .long   25
2319         .text
2320         movq    %fs:0, %rax
2321         leaq    foo@TLSGD(%rip), %rdi
2322         leaq    foo@TLSLD(%rip), %rdi
2323         leaq    foo@DTPOFF(%rax), %rdx
2324         movq    foo@GOTTPOFF(%rip), %rax
2325         movq    $foo@TPOFF, %rax'
2326         tls_first_major=2
2327         tls_first_minor=14
2328         tls_as_opt=--fatal-warnings
2329         ;;
2330   ia64-*-*)
2331     conftest_s='
2332         .section ".tdata","awT",@progbits
2333 foo:    data8   25
2334         .text
2335         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2336         addl    r17 = @ltoff(@dtprel(foo#)), gp
2337         addl    r18 = @ltoff(@tprel(foo#)), gp
2338         addl    r19 = @dtprel(foo#), gp
2339         adds    r21 = @dtprel(foo#), r13
2340         movl    r23 = @dtprel(foo#)
2341         addl    r20 = @tprel(foo#), gp
2342         adds    r22 = @tprel(foo#), r13
2343         movl    r24 = @tprel(foo#)'
2344         tls_first_major=2
2345         tls_first_minor=13
2346         tls_as_opt=--fatal-warnings
2347         ;;
2348   powerpc-*-*)
2349     conftest_s='
2350         .section ".tdata","awT",@progbits
2351         .align 2
2352 ld0:    .space 4
2353 ld1:    .space 4
2354 x1:     .space 4
2355 x2:     .space 4
2356 x3:     .space 4
2357         .text
2358         addi 3,31,ld0@got@tlsgd
2359         bl __tls_get_addr
2360         addi 3,31,x1@got@tlsld
2361         bl __tls_get_addr
2362         addi 9,3,x1@dtprel
2363         addis 9,3,x2@dtprel@ha
2364         addi 9,9,x2@dtprel@l
2365         lwz 9,x3@got@tprel(31)
2366         add 9,9,x@tls
2367         addi 9,2,x1@tprel
2368         addis 9,2,x2@tprel@ha
2369         addi 9,9,x2@tprel@l'
2370         tls_first_major=2
2371         tls_first_minor=14
2372         tls_as_opt="-a32 --fatal-warnings"
2373         ;;
2374   powerpc64-*-*)
2375     conftest_s='
2376         .section ".tdata","awT",@progbits
2377         .align 3
2378 ld0:    .space 8
2379 ld1:    .space 8
2380 x1:     .space 8
2381 x2:     .space 8
2382 x3:     .space 8
2383         .text
2384         addi 3,2,ld0@got@tlsgd
2385         bl .__tls_get_addr
2386         nop
2387         addi 3,2,ld1@toc
2388         bl .__tls_get_addr
2389         nop
2390         addi 3,2,x1@got@tlsld
2391         bl .__tls_get_addr
2392         nop
2393         addi 9,3,x1@dtprel
2394         bl .__tls_get_addr
2395         nop
2396         addis 9,3,x2@dtprel@ha
2397         addi 9,9,x2@dtprel@l
2398         bl .__tls_get_addr
2399         nop
2400         ld 9,x3@got@dtprel(2)
2401         add 9,9,3
2402         bl .__tls_get_addr
2403         nop'
2404         tls_first_major=2
2405         tls_first_minor=14
2406         tls_as_opt="-a64 --fatal-warnings"
2407         ;;
2408   s390-*-*)
2409     conftest_s='
2410         .section ".tdata","awT",@progbits
2411 foo:    .long   25
2412         .text
2413         .long   foo@TLSGD
2414         .long   foo@TLSLDM
2415         .long   foo@DTPOFF
2416         .long   foo@NTPOFF
2417         .long   foo@GOTNTPOFF
2418         .long   foo@INDNTPOFF
2419         l       %r1,foo@GOTNTPOFF(%r12)
2420         l       %r1,0(%r1):tls_load:foo
2421         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2422         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2423         tls_first_major=2
2424         tls_first_minor=14
2425         tls_as_opt="-m31 --fatal-warnings"
2426         ;;
2427   s390x-*-*)
2428     conftest_s='
2429         .section ".tdata","awT",@progbits
2430 foo:    .long   25
2431         .text
2432         .quad   foo@TLSGD
2433         .quad   foo@TLSLDM
2434         .quad   foo@DTPOFF
2435         .quad   foo@NTPOFF
2436         .quad   foo@GOTNTPOFF
2437         lg      %r1,foo@GOTNTPOFF(%r12)
2438         larl    %r1,foo@INDNTPOFF
2439         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2440         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2441         tls_first_major=2
2442         tls_first_minor=14
2443         tls_as_opt="-m64 -Aesame --fatal-warnings"
2444         ;;
2445   sh-*-* | sh[34]-*-*)
2446     conftest_s='
2447         .section ".tdata","awT",@progbits
2448 foo:    .long   25
2449         .text
2450         .long   foo@TLSGD
2451         .long   foo@TLSLDM
2452         .long   foo@DTPOFF
2453         .long   foo@GOTTPOFF
2454         .long   foo@TPOFF'
2455         tls_first_major=2
2456         tls_first_minor=13
2457         tls_as_opt=--fatal-warnings
2458         ;;
2459   sparc*-*-*)
2460     case "$target" in
2461       sparc*-sun-solaris2.*)
2462         on_solaris=yes
2463         ;;
2464       *)
2465         on_solaris=no
2466         ;;
2467     esac
2468     if test x$on_solaris = xyes && test x$gas_flag = xno; then
2469       conftest_s='
2470         .section ".tdata",#alloc,#write,#tls
2471 foo:    .long   25
2472         .text
2473         sethi   %tgd_hi22(foo), %o0
2474         add     %o0, %tgd_lo10(foo), %o1
2475         add     %l7, %o1, %o0, %tgd_add(foo)
2476         call    __tls_get_addr, %tgd_call(foo)
2477         sethi   %tldm_hi22(foo), %l1
2478         add     %l1, %tldm_lo10(foo), %l2
2479         add     %l7, %l2, %o0, %tldm_add(foo)
2480         call    __tls_get_addr, %tldm_call(foo)
2481         sethi   %tldo_hix22(foo), %l3
2482         xor     %l3, %tldo_lox10(foo), %l4
2483         add     %o0, %l4, %l5, %tldo_add(foo)
2484         sethi   %tie_hi22(foo), %o3
2485         add     %o3, %tie_lo10(foo), %o3
2486         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2487         add     %g7, %o2, %o4, %tie_add(foo)
2488         sethi   %tle_hix22(foo), %l1
2489         xor     %l1, %tle_lox10(foo), %o5
2490         ld      [%g7 + %o5], %o1'
2491         tls_first_major=0
2492         tls_first_minor=0
2493     else
2494       conftest_s='
2495         .section ".tdata","awT",@progbits
2496 foo:    .long   25
2497         .text
2498         sethi   %tgd_hi22(foo), %o0
2499         add     %o0, %tgd_lo10(foo), %o1
2500         add     %l7, %o1, %o0, %tgd_add(foo)
2501         call    __tls_get_addr, %tgd_call(foo)
2502         sethi   %tldm_hi22(foo), %l1
2503         add     %l1, %tldm_lo10(foo), %l2
2504         add     %l7, %l2, %o0, %tldm_add(foo)
2505         call    __tls_get_addr, %tldm_call(foo)
2506         sethi   %tldo_hix22(foo), %l3
2507         xor     %l3, %tldo_lox10(foo), %l4
2508         add     %o0, %l4, %l5, %tldo_add(foo)
2509         sethi   %tie_hi22(foo), %o3
2510         add     %o3, %tie_lo10(foo), %o3
2511         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2512         add     %g7, %o2, %o4, %tie_add(foo)
2513         sethi   %tle_hix22(foo), %l1
2514         xor     %l1, %tle_lox10(foo), %o5
2515         ld      [%g7 + %o5], %o1'
2516         tls_first_major=2
2517         tls_first_minor=14
2518         tls_as_opt="-32 --fatal-warnings"
2519       fi
2520         ;;
2521 changequote([,])dnl
2522 esac
2523 if test -z "$tls_first_major"; then
2524   : # If we don't have a check, assume no support.
2525 else
2526   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2527   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2528   [AC_DEFINE(HAVE_AS_TLS, 1,
2529             [Define if your assembler supports thread-local storage.])])
2530 fi
2531
2532 # Target-specific assembler checks.
2533
2534 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2535 gcc_cv_ld_static_dynamic=no
2536 if test $in_tree_ld = yes ; then
2537   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2538     gcc_cv_ld_static_dynamic=yes
2539   fi
2540 elif test x$gcc_cv_ld != x; then
2541         # Check if linker supports -Bstatic/-Bdynamic option
2542         if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2543           && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2544                 gcc_cv_ld_static_dynamic=yes
2545         fi
2546 fi
2547 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2548         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2549 [Define if your linker supports -Bstatic/-Bdynamic option.])
2550 fi
2551 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2552
2553 if test x"$demangler_in_ld" = xyes; then
2554   AC_MSG_CHECKING(linker --demangle support)
2555   gcc_cv_ld_demangle=no
2556   if test $in_tree_ld = yes; then
2557     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2558       gcc_cv_ld_demangle=yes
2559     fi
2560   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2561     # Check if the GNU linker supports --demangle option
2562     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2563       gcc_cv_ld_demangle=yes
2564     fi
2565   fi
2566   if test x"$gcc_cv_ld_demangle" = xyes; then
2567     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2568 [Define if your linker supports --demangle option.])
2569   fi
2570   AC_MSG_RESULT($gcc_cv_ld_demangle)
2571 fi
2572
2573 case "$target" in
2574   # All TARGET_ABI_OSF targets.
2575   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2576     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2577         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2578 [       .set nomacro
2579         .text
2580         extbl   $3, $2, $3      !lituse_bytoff!1
2581         ldq     $2, a($29)      !literal!1
2582         ldq     $4, b($29)      !literal!2
2583         ldq_u   $3, 0($2)       !lituse_base!1
2584         ldq     $27, f($29)     !literal!5
2585         jsr     $26, ($27), f   !lituse_jsr!5
2586         ldah    $29, 0($26)     !gpdisp!3
2587         lda     $0, c($29)      !gprel
2588         ldah    $1, d($29)      !gprelhigh
2589         lda     $1, d($1)       !gprellow
2590         lda     $29, 0($29)     !gpdisp!3],,
2591     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2592   [Define if your assembler supports explicit relocations.])])
2593     ;;
2594
2595   cris-*-*)
2596     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2597       gcc_cv_as_cris_no_mul_bug,[2,15,91],
2598       [-no-mul-bug-abort], [.text],,
2599       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2600                 [Define if your assembler supports the -no-mul-bug-abort option.])])
2601     ;;
2602
2603   sparc*-*-*)
2604     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2605       [.register %g2, #scratch],,
2606       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2607                 [Define if your assembler supports .register.])])
2608
2609     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2610       [-relax], [.text],,
2611       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2612                 [Define if your assembler supports -relax option.])])
2613
2614     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2615       gcc_cv_as_sparc_ua_pcrel,,
2616       [-K PIC],
2617 [.text
2618 foo:
2619         nop
2620 .data
2621 .align 4
2622 .byte 0
2623 .uaword %r_disp32(foo)],
2624       [if test x$gcc_cv_ld != x \
2625        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2626          gcc_cv_as_sparc_ua_pcrel=yes
2627        fi
2628        rm -f conftest],
2629       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2630                 [Define if your assembler and linker support unaligned PC relative relocs.])
2631
2632       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2633         gcc_cv_as_sparc_ua_pcrel_hidden,,
2634         [-K PIC],
2635 [.data
2636 .align 4
2637 .byte 0x31
2638 .uaword %r_disp32(foo)
2639 .byte 0x32, 0x33, 0x34
2640 .global foo
2641 .hidden foo
2642 foo:
2643 .skip 4],
2644         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2645          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2646          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2647             | grep ' 31000000 07323334' > /dev/null 2>&1; then
2648             if $gcc_cv_objdump -R conftest 2> /dev/null \
2649                | grep 'DISP32' > /dev/null 2>&1; then
2650                 :
2651             else
2652                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2653             fi
2654          fi
2655          rm -f conftest],
2656          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2657                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2658     ]) # unaligned pcrel relocs
2659
2660     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2661       gcc_cv_as_sparc_offsetable_lo10,,
2662       [-xarch=v9],
2663 [.text
2664         or %g1, %lo(ab) + 12, %g1
2665         or %g1, %lo(ab + 12), %g1],
2666       [if test x$gcc_cv_objdump != x \
2667        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2668           | grep ' 82106000 82106000' > /dev/null 2>&1; then
2669          gcc_cv_as_sparc_offsetable_lo10=yes
2670        fi],
2671        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2672                  [Define if your assembler supports offsetable %lo().])])
2673     ;;
2674
2675 changequote(,)dnl
2676   i[34567]86-*-* | x86_64-*-*)
2677 changequote([,])dnl
2678     case $target_os in
2679       cygwin* | pe | mingw32*)
2680         # Used for DWARF 2 in PE
2681         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2682           gcc_cv_as_ix86_pe_secrel32,
2683           [2,15,91],,
2684 [.text
2685 foo:    nop
2686 .data
2687         .secrel32 foo],
2688           [if test x$gcc_cv_ld != x \
2689            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2690              gcc_cv_as_ix86_pe_secrel32=yes
2691            fi
2692            rm -f conftest],
2693           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2694             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2695         ;;
2696     esac
2697
2698     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2699        gcc_cv_as_ix86_filds_fists,
2700       [2,9,0],, [filds mem; fists mem],,
2701       [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2702         [Define if your assembler uses the new HImode fild and fist notation.])])
2703
2704     gcc_GAS_CHECK_FEATURE([cmov syntax],
2705       gcc_cv_as_ix86_cmov_sun_syntax,,,
2706       [cmovl.l %edx, %eax],,
2707       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2708         [Define if your assembler supports the Sun syntax for cmov.])])
2709
2710     # This one is used unconditionally by i386.[ch]; it is to be defined
2711     # to 1 if the feature is present, 0 otherwise.
2712     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2713         gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2714 [       .text
2715 .L0:
2716         nop
2717         .data
2718         .long .L0@GOTOFF])
2719     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2720       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2721       [Define true if the assembler supports '.long foo@GOTOFF'.])
2722     ;;
2723
2724   ia64*-*-*)
2725     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2726         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2727 [       .text
2728         addl r15 = @ltoffx(x#), gp
2729         ;;
2730         ld8.mov r16 = [[r15]], x#],,
2731     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2732           [Define if your assembler supports ltoffx and ldxmov relocations.])])
2733
2734     ;;
2735
2736   powerpc*-*-*)
2737     case $target in
2738       *-*-aix*) conftest_s='    .csect .text[[PR]]
2739         mfcr 3,128';;
2740       *-*-darwin*)
2741         gcc_GAS_CHECK_FEATURE([.machine directive support],
2742           gcc_cv_as_machine_directive,,,
2743           [     .machine ppc7400])
2744         if test x$gcc_cv_as_machine_directive != xyes; then
2745           echo "*** This target requires an assembler supporting \".machine\"" >&2
2746           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2747           test x$build = x$target && exit 1
2748         fi
2749         conftest_s='    .text
2750         mfcr r3,128';;
2751       *) conftest_s='   .machine power4
2752         .text
2753         mfcr 3,128';;
2754     esac
2755
2756     gcc_GAS_CHECK_FEATURE([mfcr field support],
2757       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2758       [$conftest_s],,
2759       [AC_DEFINE(HAVE_AS_MFCRF, 1,
2760           [Define if your assembler supports mfcr field.])])
2761     ;;
2762
2763   mips*-*-*)
2764     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2765       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2766 [       lw $4,%gp_rel(foo)($4)],,
2767       [if test x$target_cpu_default = x
2768        then target_cpu_default=MASK_EXPLICIT_RELOCS
2769        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2770        fi])
2771
2772     if test x$gas_flag = xyes \
2773        || test x"$host" != x"$build" \
2774        || test ! -x "$gcc_cv_as" \
2775        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2776       :
2777     else
2778       echo "*** This configuration requires the GNU assembler" >&2
2779       exit 1
2780     fi
2781     ;;
2782 esac
2783 # ??? Not all targets support dwarf2 debug_line, even within a version
2784 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2785 # info to the output file.  So, as supported targets are added to gas 2.11,
2786 # add some instruction here to (also) show we expect this might work.
2787 # ??? Once 2.11 is released, probably need to add first known working
2788 # version to the per-target configury.
2789 case "$target" in
2790   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2791   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2792   | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2793     insn="nop"
2794     ;;
2795   ia64*-*-* | s390*-*-*)
2796     insn="nop 0"
2797     ;;
2798   mmix-*-*)
2799     insn="swym 0"
2800     ;;
2801 esac
2802 if test x"$insn" != x; then
2803  conftest_s="\
2804         .file 1 \"conftest.s\"
2805         .loc 1 3 0
2806         $insn"
2807  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2808   gcc_cv_as_dwarf2_debug_line,
2809   [elf,2,11,0],, [$conftest_s],
2810   [if test x$gcc_cv_objdump != x \
2811    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2812       | grep debug_line > /dev/null 2>&1; then
2813      gcc_cv_as_dwarf2_debug_line=yes
2814    fi])
2815
2816 # The .debug_line file table must be in the exact order that
2817 # we specified the files, since these indices are also used
2818 # by DW_AT_decl_file.  Approximate this test by testing if
2819 # the assembler bitches if the same index is assigned twice.
2820  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2821   gcc_cv_as_dwarf2_file_buggy,,,
2822 [       .file 1 "foo.s"
2823         .file 1 "bar.s"])
2824
2825  if test $gcc_cv_as_dwarf2_debug_line = yes \
2826  && test $gcc_cv_as_dwarf2_file_buggy = no; then
2827         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2828   [Define if your assembler supports dwarf2 .file/.loc directives,
2829    and preserves file table indices exactly as given.])
2830  fi
2831
2832  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2833   gcc_cv_as_gdwarf2_flag,
2834   [elf,2,11,0], [--gdwarf2], [$insn],,
2835   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2836 [Define if your assembler supports the --gdwarf2 option.])])
2837
2838  gcc_GAS_CHECK_FEATURE([--gstabs option],
2839   gcc_cv_as_gstabs_flag,
2840   [elf,2,11,0], [--gstabs], [$insn],
2841   [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2842    # and warns about it, but still exits successfully.  So check for
2843    # this.
2844    if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2845    then :
2846    else gcc_cv_as_gstabs_flag=yes
2847    fi],
2848   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2849 [Define if your assembler supports the --gstabs option.])])
2850 fi
2851
2852 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2853 gcc_cv_ld_ro_rw_mix=unknown
2854 if test $in_tree_ld = yes ; then
2855   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2856      && test $in_tree_ld_is_elf = yes; then
2857     gcc_cv_ld_ro_rw_mix=read-write
2858   fi
2859 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2860   echo '.section myfoosect, "a"' > conftest1.s
2861   echo '.section myfoosect, "aw"' > conftest2.s
2862   echo '.byte 1' >> conftest2.s
2863   echo '.section myfoosect, "a"' > conftest3.s
2864   echo '.byte 0' >> conftest3.s
2865   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2866      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2867      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2868      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2869         conftest2.o conftest3.o > /dev/null 2>&1; then
2870     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2871                          | sed -e '/myfoosect/!d' -e N`
2872     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2873       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2874         gcc_cv_ld_ro_rw_mix=read-only
2875       else
2876         gcc_cv_ld_ro_rw_mix=read-write
2877       fi
2878     fi
2879   fi
2880 changequote(,)dnl
2881   rm -f conftest.* conftest[123].*
2882 changequote([,])dnl
2883 fi
2884 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2885         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2886   [Define if your linker links a mix of read-only
2887    and read-write sections into a read-write section.])
2888 fi
2889 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2890
2891 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2892 gcc_cv_ld_eh_frame_hdr=no
2893 if test $in_tree_ld = yes ; then
2894   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2895      && test $in_tree_ld_is_elf = yes; then
2896     gcc_cv_ld_eh_frame_hdr=yes
2897   fi
2898 elif test x$gcc_cv_ld != x; then
2899         # Check if linker supports --eh-frame-hdr option
2900         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2901                 gcc_cv_ld_eh_frame_hdr=yes
2902         fi
2903 fi
2904 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2905         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2906 [Define if your linker supports --eh-frame-hdr option.])
2907 fi
2908 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2909
2910 AC_MSG_CHECKING(linker position independent executable support)
2911 gcc_cv_ld_pie=no
2912 if test $in_tree_ld = yes ; then
2913   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2914      && test $in_tree_ld_is_elf = yes; then
2915     gcc_cv_ld_pie=yes
2916   fi
2917 elif test x$gcc_cv_ld != x; then
2918         # Check if linker supports -pie option
2919         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2920                 gcc_cv_ld_pie=yes
2921         fi
2922 fi
2923 if test x"$gcc_cv_ld_pie" = xyes; then
2924         AC_DEFINE(HAVE_LD_PIE, 1,
2925 [Define if your linker supports -pie option.])
2926 fi
2927 AC_MSG_RESULT($gcc_cv_ld_pie)
2928
2929 # --------
2930 # UNSORTED
2931 # --------
2932
2933 AC_CACHE_CHECK(linker --as-needed support,
2934 gcc_cv_ld_as_needed,
2935 [gcc_cv_ld_as_needed=no
2936 if test $in_tree_ld = yes ; then
2937   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2938      && test $in_tree_ld_is_elf = yes; then
2939     gcc_cv_ld_as_needed=yes
2940   fi
2941 elif test x$gcc_cv_ld != x; then
2942         # Check if linker supports --as-needed and --no-as-needed options
2943         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2944                 gcc_cv_ld_as_needed=yes
2945         fi
2946 fi
2947 ])
2948 if test x"$gcc_cv_ld_as_needed" = xyes; then
2949         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2950 [Define if your linker supports --as-needed and --no-as-needed options.])
2951 fi
2952
2953 case "$target" in
2954   powerpc64*-*-linux*)
2955     AC_CACHE_CHECK(linker support for omitting dot symbols,
2956     gcc_cv_ld_no_dot_syms,
2957     [gcc_cv_ld_no_dot_syms=no
2958     if test $in_tree_ld = yes ; then
2959       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2960         gcc_cv_ld_no_dot_syms=yes
2961       fi
2962     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2963       cat > conftest1.s <<EOF
2964         .text
2965         bl .foo
2966 EOF
2967       cat > conftest2.s <<EOF
2968         .section ".opd","aw"
2969         .align 3
2970         .globl foo
2971         .type foo,@function
2972 foo:
2973         .quad .LEfoo,.TOC.@tocbase,0
2974         .text
2975 .LEfoo:
2976         blr
2977         .size foo,.-.LEfoo
2978 EOF
2979       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
2980          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
2981          && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
2982         gcc_cv_ld_no_dot_syms=yes
2983       fi
2984       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
2985     fi
2986     ])
2987     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
2988       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
2989     [Define if your PowerPC64 linker only needs function descriptor syms.])
2990     fi
2991     ;;
2992 esac
2993
2994 if test x$with_sysroot = x && test x$host = x$target \
2995    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2996   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
2997 [Define to PREFIX/include if cpp should also search that directory.])
2998 fi
2999
3000 # Find out what GC implementation we want, or may, use.
3001 AC_ARG_WITH(gc,
3002 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
3003                           with the compiler],
3004 [case "$withval" in
3005   page | zone)
3006     GGC=ggc-$withval
3007     ;;
3008   *)
3009     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3010     ;;
3011 esac],
3012 [GGC=ggc-page])
3013 AC_SUBST(GGC)
3014 echo "Using $GGC for garbage collection."
3015
3016 # Use the system's zlib library.
3017 zlibdir=-L../zlib
3018 zlibinc="-I\$(srcdir)/../zlib"
3019 AC_ARG_WITH(system-zlib,
3020 [  --with-system-zlib      use installed libz],
3021 zlibdir=
3022 zlibinc=
3023 )
3024 AC_SUBST(zlibdir)
3025 AC_SUBST(zlibinc)
3026
3027 dnl Very limited version of automake's enable-maintainer-mode
3028
3029 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3030   dnl maintainer-mode is disabled by default
3031   AC_ARG_ENABLE(maintainer-mode,
3032 [  --enable-maintainer-mode
3033                           enable make rules and dependencies not useful
3034                           (and sometimes confusing) to the casual installer],
3035       maintainer_mode=$enableval,
3036       maintainer_mode=no)
3037
3038 AC_MSG_RESULT($maintainer_mode)
3039
3040 if test "$maintainer_mode" = "yes"; then
3041   MAINT=''
3042 else
3043   MAINT='#'
3044 fi
3045 AC_SUBST(MAINT)dnl
3046
3047 # --------------
3048 # Language hooks
3049 # --------------
3050
3051 # Make empty files to contain the specs and options for each language.
3052 # Then add #include lines to for a compiler that has specs and/or options.
3053
3054 lang_opt_files=
3055 lang_specs_files=
3056 lang_tree_files=
3057 for subdir in . $subdirs
3058 do
3059         if test -f $srcdir/$subdir/lang.opt; then
3060             lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3061         fi
3062         if test -f $srcdir/$subdir/lang-specs.h; then
3063             lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3064         fi
3065         if test -f $srcdir/$subdir/$subdir-tree.def; then
3066             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3067         fi
3068 done
3069
3070 # These (without "all_") are set in each config-lang.in.
3071 # `language' must be a single word so is spelled singularly.
3072 all_languages=
3073 all_boot_languages=
3074 all_compilers=
3075 all_stagestuff=
3076 all_outputs='Makefile gccbug mklibgcc libada-mk'
3077 # List of language makefile fragments.
3078 all_lang_makefrags=
3079 # List of language subdirectory makefiles.  Deprecated.
3080 all_lang_makefiles=
3081 # Files for gengtype
3082 all_gtfiles="$target_gtfiles"
3083 # Files for gengtype with language
3084 all_gtfiles_files_langs=
3085 all_gtfiles_files_files=
3086
3087 # Add the language fragments.
3088 # Languages are added via two mechanisms.  Some information must be
3089 # recorded in makefile variables, these are defined in config-lang.in.
3090 # We accumulate them and plug them into the main Makefile.
3091 # The other mechanism is a set of hooks for each of the main targets
3092 # like `clean', `install', etc.
3093
3094 language_hooks="Make-hooks"
3095
3096 for s in $subdirs
3097 do
3098                 language=
3099                 boot_language=
3100                 compilers=
3101                 stagestuff=
3102                 outputs=
3103                 gtfiles=
3104                 . ${srcdir}/$s/config-lang.in
3105                 if test "x$language" = x
3106                 then
3107                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3108                         exit 1
3109                 fi
3110                 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3111                 if test -f ${srcdir}/$s/Makefile.in
3112                 then all_lang_makefiles="$s/Makefile"
3113                 fi
3114                 all_languages="$all_languages $language"
3115                 if test "x$boot_language" = xyes
3116                 then
3117                         all_boot_languages="$all_boot_languages $language"
3118                 fi
3119                 all_compilers="$all_compilers $compilers"
3120                 all_stagestuff="$all_stagestuff $stagestuff"
3121                 all_outputs="$all_outputs $outputs"
3122                 all_gtfiles="$all_gtfiles $gtfiles"
3123                 for f in $gtfiles
3124                 do
3125                          all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3126                          all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3127                 done
3128 done
3129
3130 # Pick up gtfiles for c
3131 gtfiles=
3132 s="c"
3133 . ${srcdir}/c-config-lang.in
3134 all_gtfiles="$all_gtfiles $gtfiles"
3135 for f in $gtfiles
3136 do
3137         all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3138         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3139 done
3140
3141 check_languages=
3142 for language in $all_languages
3143 do
3144                 check_languages="$check_languages check-$language"
3145 done
3146
3147 # We link each language in with a set of hooks, reached indirectly via
3148 # lang.${target}.
3149
3150 rm -f Make-hooks
3151 touch Make-hooks
3152 target_list="all.build all.cross start.encap rest.encap tags \
3153         install-normal install-common install-man \
3154         uninstall info man srcextra srcman srcinfo \
3155         mostlyclean clean distclean maintainer-clean \
3156         stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3157 for t in $target_list
3158 do
3159         x=
3160         for lang in $all_languages
3161         do
3162                         x="$x $lang.$t"
3163         done
3164         echo "lang.$t: $x" >> Make-hooks
3165 done
3166
3167 # --------
3168 # UNSORTED
3169 # --------
3170
3171 # Create .gdbinit.
3172
3173 echo "dir ." > .gdbinit
3174 echo "dir ${srcdir}" >> .gdbinit
3175 if test x$gdb_needs_out_file_path = xyes
3176 then
3177         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3178 fi
3179 if test "x$subdirs" != x; then
3180         for s in $subdirs
3181         do
3182                 echo "dir ${srcdir}/$s" >> .gdbinit
3183         done
3184 fi
3185 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3186
3187 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3188 # absolute path for gcc_tooldir based on inserting the number of up-directory
3189 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3190 # $(libsubdir)/@(unlibsubdir) based path.
3191 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3192 # make and thus we'd get different behavior depending on where we built the
3193 # sources.
3194 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3195     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3196 else
3197 changequote(<<, >>)dnl
3198 # An explanation of the sed strings:
3199 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
3200 #  -e 's|/$||'            match a trailing forward slash and eliminates it
3201 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
3202 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
3203 #
3204 # (*) Note this pattern overwrites the first character of the string
3205 # with a forward slash if one is not already present.  This is not a
3206 # problem because the exact names of the sub-directories concerned is
3207 # unimportant, just the number of them matters.
3208 #
3209 # The practical upshot of these patterns is like this:
3210 #
3211 #  prefix     exec_prefix        result
3212 #  ------     -----------        ------
3213 #   /foo        /foo/bar          ../
3214 #   /foo/       /foo/bar          ../
3215 #   /foo        /foo/bar/         ../
3216 #   /foo/       /foo/bar/         ../
3217 #   /foo        /foo/bar/ugg      ../../
3218 #
3219     dollar='$$'
3220     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3221 changequote([, ])dnl
3222 fi
3223 AC_SUBST(gcc_tooldir)
3224 AC_SUBST(dollar)
3225
3226 # Find a directory in which to install a shared libgcc.
3227
3228 AC_ARG_ENABLE(version-specific-runtime-libs,
3229 [  --enable-version-specific-runtime-libs
3230                           specify that runtime libraries should be
3231                           installed in a compiler-specific directory])
3232
3233 AC_ARG_WITH(slibdir,
3234 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
3235 slibdir="$with_slibdir",
3236 if test "${enable_version_specific_runtime_libs+set}" = set; then
3237   slibdir='$(libsubdir)'
3238 elif test "$host" != "$target"; then
3239   slibdir='$(build_tooldir)/lib'
3240 else
3241   slibdir='$(libdir)'
3242 fi)
3243 AC_SUBST(slibdir)
3244
3245 objdir=`${PWDCMD-pwd}`
3246 AC_SUBST(objdir)
3247
3248 # Substitute configuration variables
3249 AC_SUBST(subdirs)
3250 AC_SUBST(srcdir)
3251 AC_SUBST(all_boot_languages)
3252 AC_SUBST(all_compilers)
3253 AC_SUBST(all_gtfiles)
3254 AC_SUBST(all_gtfiles_files_langs)
3255 AC_SUBST(all_gtfiles_files_files)
3256 AC_SUBST(all_lang_makefrags)
3257 AC_SUBST(all_lang_makefiles)
3258 AC_SUBST(all_languages)
3259 AC_SUBST(all_stagestuff)
3260 AC_SUBST(build_exeext)
3261 AC_SUBST(build_install_headers_dir)
3262 AC_SUBST(build_xm_file_list)
3263 AC_SUBST(build_xm_include_list)
3264 AC_SUBST(build_xm_defines)
3265 AC_SUBST(check_languages)
3266 AC_SUBST(cc_set_by_configure)
3267 AC_SUBST(quoted_cc_set_by_configure)
3268 AC_SUBST(cpp_install_dir)
3269 AC_SUBST(xmake_file)
3270 AC_SUBST(tmake_file)
3271 AC_SUBST(extra_gcc_objs)
3272 AC_SUBST(extra_headers_list)
3273 AC_SUBST(extra_objs)
3274 AC_SUBST(extra_parts)
3275 AC_SUBST(extra_passes)
3276 AC_SUBST(extra_programs)
3277 AC_SUBST(float_h_file)
3278 AC_SUBST(gcc_config_arguments)
3279 AC_SUBST(gcc_gxx_include_dir)
3280 AC_SUBST(libstdcxx_incdir)
3281 AC_SUBST(host_exeext)
3282 AC_SUBST(host_xm_file_list)
3283 AC_SUBST(host_xm_include_list)
3284 AC_SUBST(host_xm_defines)
3285 AC_SUBST(out_host_hook_obj)
3286 AC_SUBST(install)
3287 AC_SUBST(lang_opt_files)
3288 AC_SUBST(lang_specs_files)
3289 AC_SUBST(lang_tree_files)
3290 AC_SUBST(local_prefix)
3291 AC_SUBST(md_file)
3292 AC_SUBST(objc_boehm_gc)
3293 AC_SUBST(out_file)
3294 AC_SUBST(out_object_file)
3295 AC_SUBST(stage_prefix_set_by_configure)
3296 AC_SUBST(quoted_stage_prefix_set_by_configure)
3297 AC_SUBST(thread_file)
3298 AC_SUBST(tm_file_list)
3299 AC_SUBST(tm_include_list)
3300 AC_SUBST(tm_defines)
3301 AC_SUBST(tm_p_file_list)
3302 AC_SUBST(tm_p_include_list)
3303 AC_SUBST(xm_file_list)
3304 AC_SUBST(xm_include_list)
3305 AC_SUBST(xm_defines)
3306 AC_SUBST(c_target_objs)
3307 AC_SUBST(cxx_target_objs)
3308 AC_SUBST(target_cpu_default)
3309
3310 AC_SUBST_FILE(language_hooks)
3311
3312 TL_AC_GNU_MAKE_GCC_LIB_PATH
3313
3314 # Echo link setup.
3315 if test x${build} = x${host} ; then
3316   if test x${host} = x${target} ; then
3317     echo "Links are now set up to build a native compiler for ${target}." 1>&2
3318   else
3319     echo "Links are now set up to build a cross-compiler" 1>&2
3320     echo " from ${host} to ${target}." 1>&2
3321   fi
3322 else
3323   if test x${host} = x${target} ; then
3324     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3325     echo " for ${target}." 1>&2
3326   else
3327     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3328     echo " from ${host} to ${target}." 1>&2
3329   fi
3330 fi
3331
3332 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3333 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3334
3335 # Configure the subdirectories
3336 # AC_CONFIG_SUBDIRS($subdirs)
3337
3338 # Create the Makefile
3339 # and configure language subdirectories
3340 AC_CONFIG_FILES($all_outputs)
3341
3342 AC_CONFIG_COMMANDS([default],
3343 [
3344 case ${CONFIG_HEADERS} in
3345   *auto-host.h:config.in*)
3346   echo > cstamp-h ;;
3347 esac
3348 # Make sure all the subdirs exist.
3349 for d in $subdirs doc build
3350 do
3351     test -d $d || mkdir $d
3352 done
3353 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3354 # bootstrapping and the installation procedure can still use
3355 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3356 # FLAGS_TO_PASS has been modified to solve the problem there.
3357 # This is virtually a duplicate of what happens in configure.lang; we do
3358 # an extra check to make sure this only happens if ln -s can be used.
3359 case "$LN_S" in
3360   *-s*)
3361     for d in ${subdirs} ; do
3362         STARTDIR=`${PWDCMD-pwd}`
3363         cd $d
3364         for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3365         do
3366                 rm -f $t
3367                 $LN_S ../$t $t 2>/dev/null
3368         done
3369         cd $STARTDIR
3370     done
3371   ;;
3372 esac
3373 ],
3374 [subdirs='$subdirs'])
3375 AC_OUTPUT