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 # Convert extra_options into a form suitable for Makefile use.
1336 extra_opt_files=
1337 for f in $extra_options; do
1338   extra_opt_files="$extra_opt_files \$(srcdir)/config/$f"
1339 done
1340 AC_SUBST(extra_opt_files)
1341
1342 # auto-host.h is the file containing items generated by autoconf and is
1343 # the first file included by config.h.
1344 # If host=build, it is correct to have bconfig include auto-host.h
1345 # as well.  If host!=build, we are in error and need to do more
1346 # work to find out the build config parameters.
1347 if test x$host = x$build
1348 then
1349         build_auto=auto-host.h
1350 else
1351         # We create a subdir, then run autoconf in the subdir.
1352         # To prevent recursion we set host and build for the new
1353         # invocation of configure to the build for this invocation
1354         # of configure.
1355         tempdir=build.$$
1356         rm -rf $tempdir
1357         mkdir $tempdir
1358         cd $tempdir
1359         case ${srcdir} in
1360         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1361         *) realsrcdir=../${srcdir};;
1362         esac
1363         saved_CFLAGS="${CFLAGS}"
1364         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1365         ${realsrcdir}/configure \
1366                 --enable-languages=${enable_languages-all} \
1367                 --target=$target_alias --host=$build_alias --build=$build_alias
1368         CFLAGS="${saved_CFLAGS}"
1369
1370         # We just finished tests for the build machine, so rename
1371         # the file auto-build.h in the gcc directory.
1372         mv auto-host.h ../auto-build.h
1373         cd ..
1374         rm -rf $tempdir
1375         build_auto=auto-build.h
1376 fi
1377 AC_SUBST(build_subdir)
1378
1379 tm_file="${tm_file} defaults.h"
1380 tm_p_file="${tm_p_file} tm-preds.h"
1381 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1382 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1383 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1384 # put this back in temporarily.
1385 xm_file="ansidecl.h ${xm_file}"
1386
1387 # --------
1388 # UNSORTED
1389 # --------
1390
1391 changequote(,)dnl
1392 # Compile in configure arguments.
1393 if test -f configargs.h ; then
1394         # Being re-configured.
1395         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1396         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1397 else
1398         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1399 fi
1400
1401 # Double all backslashes and backslash all quotes to turn
1402 # gcc_config_arguments into a C string.
1403 sed -e 's/\\/\\\\/g; s/"/\\"/g' <<EOF >conftest.out
1404 $gcc_config_arguments
1405 EOF
1406 gcc_config_arguments_str=`cat conftest.out`
1407 rm -f conftest.out
1408
1409 cat > configargs.h <<EOF
1410 /* Generated automatically. */
1411 static const char configuration_arguments[] = "$gcc_config_arguments_str";
1412 static const char thread_model[] = "$thread_file";
1413
1414 static const struct {
1415   const char *name, *value;
1416 } configure_default_options[] = $configure_default_options;
1417 EOF
1418 changequote([,])dnl
1419
1420 # Internationalization
1421 PACKAGE=gcc
1422 VERSION="$gcc_version"
1423 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
1424   [The name of this program for internationalization purposes.])
1425 AC_SUBST(PACKAGE)
1426 AC_SUBST(VERSION)
1427
1428 ZW_GNU_GETTEXT_SISTER_DIR
1429
1430 # If LIBINTL contains LIBICONV, then clear LIBICONV so we don't get
1431 # -liconv on the link line twice.
1432 case "$LIBINTL" in *$LIBICONV*)
1433         LIBICONV= ;;
1434 esac
1435
1436 # Windows32 Registry support for specifying GCC installation paths.
1437 AC_ARG_ENABLE(win32-registry,
1438 [  --disable-win32-registry
1439                           disable lookup of installation paths in the
1440                           Registry on Windows hosts
1441   --enable-win32-registry enable registry lookup (default)
1442   --enable-win32-registry=KEY
1443                           use KEY instead of GCC version as the last portion
1444                           of the registry key],,)
1445 case $host_os in
1446         win32 | pe | cygwin* | mingw32* | uwin*)
1447 AC_MSG_CHECKING(whether windows registry support is requested)
1448 if test "x$enable_win32_registry" != xno; then
1449   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1450 [Define to 1 if installation paths should be looked up in Windows32
1451    Registry. Ignored on non windows32 hosts.])
1452   AC_MSG_RESULT(yes)
1453   AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1454 else
1455   AC_MSG_RESULT(no)
1456 fi
1457
1458 # Check if user specified a different registry key.
1459 case "x${enable_win32_registry}" in
1460 x | xyes)
1461   # default.
1462   gcc_cv_win32_registry_key="$VERSION"
1463   ;;
1464 xno)
1465   # no registry lookup.
1466   gcc_cv_win32_registry_key=''
1467   ;;
1468 *)
1469   # user-specified key.
1470   gcc_cv_win32_registry_key="$enable_win32_registry"
1471   ;;
1472 esac
1473
1474 if test "x$enable_win32_registry" != xno; then
1475   AC_MSG_CHECKING(registry key on windows hosts)
1476   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1477         [Define to be the last portion of registry key on windows hosts.])
1478   AC_MSG_RESULT($gcc_cv_win32_registry_key)
1479 fi
1480 ;;
1481 esac
1482
1483 # Get an absolute path to the GCC top-level source directory
1484 holddir=`${PWDCMD-pwd}`
1485 cd $srcdir
1486 topdir=`${PWDCMD-pwd}`
1487 cd $holddir
1488
1489 # Conditionalize the makefile for this host machine.
1490 xmake_file=
1491 for f in ${host_xmake_file}
1492 do
1493         if test -f ${srcdir}/config/$f
1494         then
1495                 xmake_file="${xmake_file} \$(srcdir)/config/$f"
1496         fi
1497 done
1498
1499 # Conditionalize the makefile for this target machine.
1500 tmake_file_=
1501 for f in ${tmake_file}
1502 do
1503         if test -f ${srcdir}/config/$f
1504         then
1505                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
1506         fi
1507 done
1508 tmake_file="${tmake_file_}"
1509
1510 # If the host doesn't support symlinks, modify CC in
1511 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1512 # Otherwise, we can use "CC=$(CC)".
1513 rm -f symtest.tem
1514 case "$LN_S" in
1515         *-s*)
1516                 cc_set_by_configure="\$(CC)"
1517                 quoted_cc_set_by_configure="\$(CC)"
1518                 stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1519                 quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1520                 ;;
1521         *)
1522                 cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1523                 quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1524                 stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1525                 quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1526                 ;;
1527 esac
1528
1529 # This is a terrible hack which will go away some day.
1530 host_cc_for_libada=${CC}
1531 AC_SUBST(host_cc_for_libada)
1532
1533 out_object_file=`basename $out_file .c`.o
1534
1535 tm_file_list="options.h"
1536 tm_include_list="options.h"
1537 for f in $tm_file; do
1538   case $f in
1539     defaults.h )
1540        tm_file_list="${tm_file_list} \$(srcdir)/$f"
1541        tm_include_list="${tm_include_list} $f"
1542        ;;
1543     * )
1544        tm_file_list="${tm_file_list} \$(srcdir)/config/$f"
1545        tm_include_list="${tm_include_list} config/$f"
1546        ;;
1547   esac
1548 done
1549
1550 tm_p_file_list=
1551 tm_p_include_list=
1552 for f in $tm_p_file; do
1553   case $f in
1554     tm-preds.h )
1555        tm_p_file_list="${tm_p_file_list} $f"
1556        tm_p_include_list="${tm_p_include_list} $f"
1557        ;;
1558     * )
1559        tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1560        tm_p_include_list="${tm_p_include_list} config/$f"
1561   esac
1562 done
1563
1564 xm_file_list=
1565 xm_include_list=
1566 for f in $xm_file; do
1567   case $f in
1568     ansidecl.h )
1569        xm_file_list="${xm_file_list} \$(srcdir)/../include/$f"
1570        xm_include_list="${xm_include_list} $f"
1571        ;;
1572     auto-host.h )
1573        xm_file_list="${xm_file_list} $f"
1574        xm_include_list="${xm_include_list} $f"
1575        ;;
1576     * )
1577        xm_file_list="${xm_file_list} \$(srcdir)/config/$f"
1578        xm_include_list="${xm_include_list} config/$f"
1579        ;;
1580   esac
1581 done
1582
1583 host_xm_file_list=
1584 host_xm_include_list=
1585 for f in $host_xm_file; do
1586   case $f in
1587     ansidecl.h )
1588        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/$f"
1589        host_xm_include_list="${host_xm_include_list} $f"
1590        ;;
1591     auto-host.h )
1592        host_xm_file_list="${host_xm_file_list} $f"
1593        host_xm_include_list="${host_xm_include_list} $f"
1594        ;;
1595     * )
1596        host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
1597        host_xm_include_list="${host_xm_include_list} config/$f"
1598        ;;
1599   esac
1600 done
1601
1602 build_xm_file_list=
1603 for f in $build_xm_file; do
1604   case $f in
1605     ansidecl.h )
1606        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/$f"
1607        build_xm_include_list="${build_xm_include_list} $f"
1608        ;;
1609     auto-build.h | auto-host.h )
1610        build_xm_file_list="${build_xm_file_list} $f"
1611        build_xm_include_list="${build_xm_include_list} $f"
1612        ;;
1613     * )
1614        build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
1615        build_xm_include_list="${build_xm_include_list} config/$f"
1616        ;;
1617   esac
1618 done
1619
1620 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1621 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1622 CROSS=                                          AC_SUBST(CROSS)
1623 ALL=all.internal                                AC_SUBST(ALL)
1624 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1625 if test x$host != x$target
1626 then
1627         CROSS="-DCROSS_COMPILE"
1628         ALL=all.cross
1629         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1630         case "$host","$target" in
1631         # Darwin crosses can use the host system's libraries and headers,
1632         # because of the fat library support.  Of course, it must be the
1633         # same version of Darwin on both sides.  Allow the user to
1634         # just say --target=foo-darwin without a version number to mean
1635         # "the version on this system".
1636             *-*-darwin*,*-*-darwin*)
1637                 hostos=`echo $host | sed 's/.*-darwin/darwin/'`
1638                 targetos=`echo $target | sed 's/.*-darwin/darwin/'`
1639                 if test $hostos = $targetos -o $targetos = darwin ; then
1640                     CROSS=
1641                     SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)'
1642                     with_headers=yes
1643                 fi
1644                 ;;
1645
1646             i?86-*-*,x86_64-*-* \
1647             | powerpc*-*-*,powerpc64*-*-*)
1648                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1649         esac
1650 elif test "x$TARGET_SYSTEM_ROOT" != x; then
1651         # This is just $(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)
1652         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1653 fi
1654
1655 # If this is a cross-compiler that does not
1656 # have its own set of headers then define
1657 # inhibit_libc
1658
1659 # If this is using newlib, without having the headers available now,
1660 # then define inhibit_libc in LIBGCC2_CFLAGS.
1661 # This prevents libgcc2 from containing any code which requires libc
1662 # support.
1663 inhibit_libc=
1664 if { { test x$host != x$target && test "x$with_sysroot" = x ; } ||
1665        test x$with_newlib = xyes ; } &&
1666      { test "x$with_headers" = x || test "x$with_headers" = xno ; } ; then
1667        inhibit_libc=-Dinhibit_libc
1668 fi
1669 AC_SUBST(inhibit_libc)
1670
1671 # When building gcc with a cross-compiler, we need to adjust things so
1672 # that the generator programs are still built with the native compiler.
1673 # Also, we cannot run fixincludes or fix-header.
1674
1675 # These are the normal (build=host) settings:
1676 CC_FOR_BUILD='$(CC)'            AC_SUBST(CC_FOR_BUILD)
1677 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1678 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1679
1680 # Possibly disable fixproto, on a per-target basis.
1681 case ${use_fixproto} in
1682   no)
1683     STMP_FIXPROTO=
1684     ;;
1685   yes)
1686     STMP_FIXPROTO=stmp-fixproto
1687     ;;
1688 esac
1689 AC_SUBST(STMP_FIXPROTO)
1690
1691 # And these apply if build != host, or we are generating coverage data
1692 if test x$build != x$host || test "x$coverage_flags" != x
1693 then
1694     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
1695
1696     if test "x$TARGET_SYSTEM_ROOT" = x; then
1697         if [ "x$STMP_FIXPROTO" != x ] ; then
1698           STMP_FIXPROTO=stmp-install-fixproto
1699         fi
1700     fi
1701 fi
1702
1703 # Expand extra_headers to include complete path.
1704 # This substitutes for lots of t-* files.
1705 extra_headers_list=
1706 # Prepend $(srcdir)/config/${cpu_type}/ to every entry in extra_headers.
1707 for file in ${extra_headers} ; do
1708   extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1709 done
1710
1711 # Define collect2 in Makefile.
1712 case $host_can_use_collect2 in
1713   no) collect2= ;;
1714   *) collect2='collect2$(exeext)' ;;
1715 esac
1716 AC_SUBST([collect2])
1717
1718 # Add a definition of USE_COLLECT2 if system wants one.
1719 case $use_collect2 in
1720   no) use_collect2= ;;
1721   "") ;;
1722   *)
1723     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1724     xm_defines="${xm_defines} USE_COLLECT2"
1725     case $host_can_use_collect2 in
1726       no)
1727         AC_MSG_ERROR([collect2 is required but cannot be built on this system])
1728         ;;
1729     esac
1730     ;;
1731 esac
1732
1733 # ---------------------------
1734 # Assembler & linker features
1735 # ---------------------------
1736
1737 # Identify the assembler which will work hand-in-glove with the newly
1738 # built GCC, so that we can examine its features.  This is the assembler
1739 # which will be driven by the driver program.
1740 #
1741 # If build != host, and we aren't building gas in-tree, we identify a
1742 # build->target assembler and hope that it will have the same features
1743 # as the host->target assembler we'll be using.
1744 AC_MSG_CHECKING(what assembler to use)
1745 in_tree_gas=no
1746 gcc_cv_as=
1747 gcc_cv_gas_major_version=
1748 gcc_cv_gas_minor_version=
1749 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1750 if test -x "$DEFAULT_ASSEMBLER"; then
1751         gcc_cv_as="$DEFAULT_ASSEMBLER"
1752 elif test -x as$build_exeext; then
1753         # Build using assembler in the current directory.
1754         gcc_cv_as=./as$build_exeext
1755 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1756      && test -f ../gas/Makefile \
1757      && test x$build = x$host; then
1758   # Single tree build which includes gas.  We want to prefer it
1759   # over whatever linker top-level may have detected, since
1760   # we'll use what we're building after installation anyway.
1761   in_tree_gas=yes
1762   _gcc_COMPUTE_GAS_VERSION
1763   rm -f as$build_exeext
1764   $LN_S ../gas/as-new$build_exeext as$build_exeext 2>/dev/null
1765   in_tree_gas_is_elf=no
1766   if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1767      || (grep 'obj_format = multi' ../gas/Makefile \
1768          && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null
1769   then
1770     in_tree_gas_is_elf=yes
1771   fi
1772 m4_pattern_allow([AS_FOR_TARGET])dnl
1773 elif test -x "$AS_FOR_TARGET"; then
1774         gcc_cv_as="$AS_FOR_TARGET"
1775 elif test -x "$AS" && test x$host = x$target; then
1776         gcc_cv_as="$AS"
1777 fi
1778
1779 if test "x$gcc_cv_as" = x; then
1780         # Search the same directories that the installed compiler will
1781         # search.  Else we may find the wrong assembler and lose.  If we
1782         # do not find a suitable assembler binary, then try the user's
1783         # path.
1784         #
1785         # Also note we have to check MD_EXEC_PREFIX before checking the
1786         # user's path.  Unfortunately, there is no good way to get at the
1787         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1788         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1789         # to be fixed as part of the make/configure rewrite too.
1790
1791         if test "x$exec_prefix" = xNONE; then
1792                 if test "x$prefix" = xNONE; then
1793                         test_prefix=/usr/local
1794                 else
1795                         test_prefix=$prefix
1796                 fi
1797         else
1798                 test_prefix=$exec_prefix
1799         fi
1800
1801         # If the loop below does not find an assembler, then use whatever
1802         # one we can find in the users's path.  We are looking for a
1803         # ${build} -> ${target} assembler.
1804         if test "x$program_prefix" != xNONE; then
1805                 gcc_cv_as=${program_prefix}as$build_exeext
1806         elif test x$build != x$host && test x$build != x$target; then
1807                 gcc_cv_as=${target_noncanonical}-as$build_exeext
1808         else
1809                 gcc_cv_as=`echo as | sed "${program_transform_name}"`$build_exeext
1810         fi
1811
1812         if test x$host = x$build; then
1813             test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1814                        $test_prefix/libexec/gcc/$target_noncanonical \
1815                        /usr/lib/gcc/$target_noncanonical/$gcc_version \
1816                        /usr/lib/gcc/$target_noncanonical \
1817                        $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1818                        $test_prefix/$target_noncanonical/bin"
1819         else
1820             test_dirs=
1821         fi
1822
1823         if test x$build = x$target; then
1824             test_dirs="$test_dirs \
1825                    /usr/libexec \
1826                    /usr/ccs/gcc \
1827                    /usr/ccs/bin \
1828                    /udk/usr/ccs/bin \
1829                    /bsd43/usr/lib/cmplrs/cc \
1830                    /usr/cross64/usr/bin \
1831                    /usr/lib/cmplrs/cc \
1832                    /sysv/usr/lib/cmplrs/cc \
1833                    /svr4/usr/lib/cmplrs/cc \
1834                    /usr/bin"
1835         fi
1836
1837         for dir in $test_dirs; do
1838                 if test -x $dir/as$build_exeext; then
1839                         gcc_cv_as=$dir/as$build_exeext
1840                         break;
1841                 fi
1842         done
1843 fi
1844 case $in_tree_gas in
1845   yes)
1846     AC_MSG_RESULT("newly built gas")
1847     ;;
1848   no)
1849     AC_MSG_RESULT($gcc_cv_as)
1850     ;;
1851 esac
1852
1853 # Identify the linker which will work hand-in-glove with the newly
1854 # built GCC, so that we can examine its features.  This is the linker
1855 # which will be driven by the driver program.
1856 #
1857 # If build != host, and we aren't building gas in-tree, we identify a
1858 # build->target linker and hope that it will have the same features
1859 # as the host->target linker we'll be using.
1860 AC_MSG_CHECKING(what linker to use)
1861 in_tree_ld=no
1862 gcc_cv_ld=
1863 gcc_cv_gld_major_version=
1864 gcc_cv_gld_minor_version=
1865 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1866 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1867 if test -x "$DEFAULT_LINKER"; then
1868         gcc_cv_ld="$DEFAULT_LINKER"
1869 elif test -x collect-ld$build_exeext; then
1870         # Build using linker in the current directory.
1871         gcc_cv_ld=./collect-ld$build_exeext
1872 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1873      && test -f ../ld/Makefile \
1874      && test x$build = x$host; then
1875         # Single tree build which includes ld.  We want to prefer it
1876         # over whatever linker top-level may have detected, since
1877         # we'll use what we're building after installation anyway.
1878         in_tree_ld=yes
1879         in_tree_ld_is_elf=no
1880         if (grep 'EMUL = .*elf' ../ld/Makefile \
1881             || grep 'EMUL = .*linux' ../ld/Makefile \
1882             || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then
1883           in_tree_ld_is_elf=yes
1884         fi
1885         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
1886         do
1887 changequote(,)dnl
1888                 gcc_cv_gld_version=`sed -n -e 's/^[     ]*\(VERSION=[0-9]*\.[0-9]*.*\)/\1/p' < $f`
1889 changequote([,])dnl
1890                 if test x$gcc_cv_gld_version != x; then
1891                         break
1892                 fi
1893         done
1894 changequote(,)dnl
1895         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1896         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1897 changequote([,])dnl
1898         rm -f collect-ld$build_exeext
1899         $LN_S ../ld/ld-new$build_exeext collect-ld$build_exeext 2>/dev/null
1900 elif test -x "$LD_FOR_TARGET"; then
1901         gcc_cv_ld="$LD_FOR_TARGET"
1902 elif test -x "$LD" && test x$host = x$target; then
1903         gcc_cv_ld="$LD"
1904 fi
1905
1906 if test "x$gcc_cv_ld" = x; then
1907         # Search the same directories that the installed compiler will
1908         # search.  Else we may find the wrong linker and lose.  If we
1909         # do not find a suitable linker binary, then try the user's
1910         # path.
1911         #
1912         # Also note we have to check MD_EXEC_PREFIX before checking the
1913         # user's path.  Unfortunately, there is no good way to get at the
1914         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1915         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1916         # to be fixed as part of the make/configure rewrite too.
1917
1918         if test "x$exec_prefix" = xNONE; then
1919                 if test "x$prefix" = xNONE; then
1920                         test_prefix=/usr/local
1921                 else
1922                         test_prefix=$prefix
1923                 fi
1924         else
1925                 test_prefix=$exec_prefix
1926         fi
1927
1928         # If the loop below does not find a linker, then use whatever
1929         # one we can find in the users's path.  We are looking for a
1930         # ${build} -> ${target} linker.
1931         if test "x$program_prefix" != xNONE; then
1932                 gcc_cv_ld=${program_prefix}ld$build_exeext
1933         elif test x$build != x$host && test x$build != x$target; then
1934                 gcc_cv_ld=${target_noncanonical}-ld$build_exeext
1935         else
1936                 gcc_cv_ld=`echo ld | sed "${program_transform_name}"`$build_exeext
1937         fi
1938
1939         if test x$host = x$build; then
1940             test_dirs="$test_prefix/libexec/gcc/$target_noncanonical/$gcc_version \
1941                        $test_prefix/libexec/gcc/$target_noncanonical \
1942                        /usr/lib/gcc/$target_noncanonical/$gcc_version \
1943                        /usr/lib/gcc/$target_noncanonical \
1944                        $test_prefix/$target_noncanonical/bin/$target_noncanonical/$gcc_version \
1945                        $test_prefix/$target_noncanonical/bin"
1946         else
1947             test_dirs=
1948         fi
1949
1950         if test x$build = x$target; then
1951             test_dirs="$test_dirs \
1952                    /usr/libexec \
1953                    /usr/ccs/gcc \
1954                    /usr/ccs/bin \
1955                    /udk/usr/ccs/bin \
1956                    /bsd43/usr/lib/cmplrs/cc \
1957                    /usr/cross64/usr/bin \
1958                    /usr/lib/cmplrs/cc \
1959                    /sysv/usr/lib/cmplrs/cc \
1960                    /svr4/usr/lib/cmplrs/cc \
1961                    /usr/bin"
1962         fi
1963
1964         for dir in $test_dirs; do
1965                 if test -x $dir/ld$build_exeext; then
1966                         gcc_cv_ld=$dir/ld$build_exeext
1967                         break;
1968                 fi
1969         done
1970 fi
1971 case $in_tree_ld in
1972   yes)
1973     AC_MSG_RESULT("newly built ld")
1974     ;;
1975   no)
1976     AC_MSG_RESULT($gcc_cv_ld)
1977     ;;
1978 esac
1979
1980 # Figure out what nm we will be using.
1981 gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils
1982 AC_MSG_CHECKING(what nm to use)
1983 in_tree_nm=no
1984 if test -x nm$build_exeext; then
1985         gcc_cv_nm=./nm$build_exeext
1986 elif test -f $gcc_cv_binutils_srcdir/configure.in \
1987      && test -f ../binutils/Makefile; then
1988         # Single tree build which includes binutils.
1989         in_tree_nm=yes
1990         gcc_cv_nm=./nm$build_exeext
1991         rm -f nm$build_exeext
1992         $LN_S ../binutils/nm-new$build_exeext nm$build_exeext 2>/dev/null
1993 elif test "x$program_prefix" != xNONE; then
1994         gcc_cv_nm=${program_prefix}nm$build_exeext
1995 elif test x$build != x$host && test x$build != x$target; then
1996         gcc_cv_nm=${target_noncanonical}-nm$build_exeext
1997 else
1998         gcc_cv_nm=`echo nm | sed "${program_transform_name}"`$build_exeext
1999 fi
2000 case $in_tree_nm in
2001   yes) AC_MSG_RESULT("newly built nm") ;;
2002   no)  AC_MSG_RESULT($gcc_cv_nm) ;;
2003 esac
2004
2005 # Figure out what objdump we will be using.
2006 AC_MSG_CHECKING(what objdump to use)
2007 in_tree_objdump=no
2008 if test -x objdump$build_exeext; then
2009         gcc_cv_objdump=./objdump$build_exeext
2010 elif test -f $gcc_cv_binutils_srcdir/configure.in \
2011      && test -f ../binutils/Makefile; then
2012         # Single tree build which includes binutils.
2013         in_tree_objdump=yes
2014         gcc_cv_objdump=./objdump$build_exeext
2015         rm -f objdump$build_exeext
2016         $LN_S ../binutils/objdump$build_exeext objdump$build_exeext 2>/dev/null
2017 elif test "x$program_prefix" != xNONE; then
2018         gcc_cv_objdump=${program_prefix}objdump$build_exeext
2019 elif test x$build != x$host && test x$build != x$target; then
2020         gcc_cv_objdump=${target_noncanonical}-objdump$build_exeext
2021 else
2022         gcc_cv_objdump=`echo objdump | \
2023                 sed "${program_transform_name}"`$build_exeext
2024 fi
2025 case $in_tree_objdump in
2026   yes) AC_MSG_RESULT("newly built objdump") ;;
2027   no)  AC_MSG_RESULT($gcc_cv_objdump) ;;
2028 esac
2029
2030 # Figure out what assembler alignment features are present.
2031 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
2032  [2,6,0],,
2033 [.balign 4
2034 .p2align 2],,
2035 [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1,
2036   [Define if your assembler supports .balign and .p2align.])])
2037
2038 gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align,
2039  [2,8,0],,
2040  [.p2align 4,,7],,
2041 [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1,
2042   [Define if your assembler supports specifying the maximum number
2043    of bytes to skip when using the GAS .p2align command.])])
2044
2045 gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1,
2046  [elf,2,9,0],,
2047  [conftest_label1: .word 0
2048 .subsection -1
2049 conftest_label2: .word 0
2050 .previous],
2051  [if test x$gcc_cv_nm != x; then
2052     $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
2053     $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
2054     if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1
2055     then :
2056     else gcc_cv_as_subsection_m1=yes
2057     fi
2058     rm -f conftest.nm1 conftest.nm2
2059   fi],
2060  [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
2061   [Define if your assembler supports .subsection and .subsection -1 starts
2062    emitting at the beginning of your section.])])
2063
2064 gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak,
2065  [2,2,0],,
2066  [      .weak foobar],,
2067 [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])])
2068
2069 gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat,
2070  [2,15,91],,
2071  [      .SPACE $TEXT$
2072         .NSUBSPA $CODE$,COMDAT],,
2073 [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])])
2074
2075 # .hidden needs to be supported in both the assembler and the linker,
2076 # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
2077 # This is irritatingly difficult to feature test for; we have to check the
2078 # date string after the version number.  If we've got an in-tree
2079 # ld, we don't know its patchlevel version, so we set the baseline at 2.13
2080 # to be safe.
2081 # The gcc_GAS_CHECK_FEATURE call just sets a cache variable.
2082 gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden,
2083  [elf,2,13,0],,
2084 [       .hidden foobar
2085 foobar:])
2086
2087 AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden,
2088 [if test $in_tree_ld = yes ; then
2089   gcc_cv_ld_hidden=no
2090   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \
2091      && test $in_tree_ld_is_elf = yes; then
2092      gcc_cv_ld_hidden=yes
2093   fi
2094 else
2095   gcc_cv_ld_hidden=yes
2096   ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
2097   if echo "$ld_ver" | grep GNU > /dev/null; then
2098 changequote(,)dnl
2099     ld_vers=`echo $ld_ver | sed -n \
2100         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2101         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2102         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
2103         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\)[  ].*$,\1,p' \
2104         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[     ].*$,\1,p' \
2105         -e 's,^.*[       ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[        ].*$,\1,p'`
2106     ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
2107     if test 0"$ld_date" -lt 20020404; then
2108       if test -n "$ld_date"; then
2109         # If there was date string, but was earlier than 2002-04-04, fail
2110         gcc_cv_ld_hidden=no
2111       elif test -z "$ld_vers"; then
2112         # If there was no date string nor ld version number, something is wrong
2113         gcc_cv_ld_hidden=no
2114       else
2115         ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
2116         ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
2117         ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
2118         test -z "$ld_vers_patch" && ld_vers_patch=0
2119         if test "$ld_vers_major" -lt 2; then
2120           gcc_cv_ld_hidden=no
2121         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
2122           gcc_cv_ld_hidden="no"
2123         elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
2124           gcc_cv_ld_hidden=no
2125         fi
2126       fi
2127 changequote([,])dnl
2128     fi
2129   else
2130     case "${target}" in
2131       hppa64*-*-hpux* | ia64*-*-hpux*)
2132         gcc_cv_ld_hidden=yes
2133         ;;
2134       *)
2135         gcc_cv_ld_hidden=no
2136         ;;
2137     esac
2138   fi
2139 fi])
2140 libgcc_visibility=no
2141 AC_SUBST(libgcc_visibility)
2142 if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then
2143   libgcc_visibility=yes
2144   AC_DEFINE(HAVE_GAS_HIDDEN, 1,
2145   [Define if your assembler and linker support .hidden.])
2146 fi
2147
2148 # Check if we have .[us]leb128, and support symbol arithmetic with it.
2149 gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
2150   [elf,2,11,0],,
2151 [       .data
2152         .uleb128 L2 - L1
2153 L1:
2154         .uleb128 1280
2155         .sleb128 -1010
2156 L2:],
2157  [# GAS versions before 2.11 do not support uleb128,
2158   # despite appearing to.
2159   # ??? There exists an elf-specific test that will crash
2160   # the assembler.  Perhaps it's better to figure out whether
2161   # arbitrary sections are supported and try the test.
2162   as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q`
2163   if echo "$as_ver" | grep GNU > /dev/null; then
2164 changequote(,)dnl
2165     as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
2166     as_major=`echo $as_ver | sed 's/\..*//'`
2167     as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
2168 changequote([,])dnl
2169     if test $as_major -eq 2 && test $as_minor -lt 11
2170     then :
2171     else gcc_cv_as_leb128=yes
2172     fi
2173   fi],
2174   [AC_DEFINE(HAVE_AS_LEB128, 1,
2175     [Define if your assembler supports .sleb128 and .uleb128.])])
2176
2177 # GAS versions up to and including 2.11.0 may mis-optimize
2178 # .eh_frame data.
2179 gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame,
2180   [elf,2,12,0],,
2181 [       .text
2182 .LFB1:
2183         .4byte  0
2184 .L1:
2185         .4byte  0
2186 .LFE1:
2187         .section        .eh_frame,"aw",@progbits
2188 __FRAME_BEGIN__:
2189         .4byte  .LECIE1-.LSCIE1
2190 .LSCIE1:
2191         .4byte  0x0
2192         .byte   0x1
2193         .ascii "z\0"
2194         .byte   0x1
2195         .byte   0x78
2196         .byte   0x1a
2197         .byte   0x0
2198         .byte   0x4
2199         .4byte  1
2200         .p2align 1
2201 .LECIE1:
2202 .LSFDE1:
2203         .4byte  .LEFDE1-.LASFDE1
2204 .LASFDE1:
2205         .4byte  .LASFDE1-__FRAME_BEGIN__
2206         .4byte  .LFB1
2207         .4byte  .LFE1-.LFB1
2208         .byte   0x4
2209         .4byte  .LFE1-.LFB1
2210         .byte   0x4
2211         .4byte  .L1-.LFB1
2212 .LEFDE1:],
2213 [  dnl # For autoconf 2.5x, must protect trailing spaces with @&t@.
2214 cat > conftest.lit <<EOF
2215  0000 10000000 00000000 017a0001 781a0004  .........z..x...
2216  0010 01000000 12000000 18000000 00000000  ................
2217  0020 08000000 04080000 0044               .........D      @&t@
2218 EOF
2219 cat > conftest.big <<EOF
2220  0000 00000010 00000000 017a0001 781a0004  .........z..x...
2221  0010 00000001 00000012 00000018 00000000  ................
2222  0020 00000008 04000000 0844               .........D      @&t@
2223 EOF
2224   # If the assembler didn't choke, and we can objdump,
2225   # and we got the correct data, then succeed.
2226   if test x$gcc_cv_objdump != x \
2227   && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
2228      | tail -3 > conftest.got \
2229   && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
2230     || cmp conftest.big conftest.got > /dev/null 2>&1; }
2231   then
2232     gcc_cv_as_eh_frame=yes
2233   elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then
2234     gcc_cv_as_eh_frame=buggy
2235   else
2236     # Uh oh, what do we do now?
2237     gcc_cv_as_eh_frame=no
2238   fi])
2239
2240 if test $gcc_cv_as_eh_frame = buggy; then
2241   AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
2242   [Define if your assembler mis-optimizes .eh_frame data.])
2243 fi
2244
2245 gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2246  [elf,2,12,0], [--fatal-warnings],
2247  [.section .rodata.str, "aMS", @progbits, 1])
2248 if test $gcc_cv_as_shf_merge = no; then
2249   gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge,
2250     [elf,2,12,0], [--fatal-warnings],
2251     [.section .rodata.str, "aMS", %progbits, 1])
2252 fi
2253 AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE,
2254   [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`],
2255 [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.])
2256
2257 gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group,
2258  [elf,2,15,91], [--fatal-warnings],
2259  [.section .text,"axG",@progbits,.foo,comdat])
2260 if test $gcc_cv_as_comdat_group = yes; then
2261   gcc_cv_as_comdat_group_percent=no
2262 else
2263  gcc_GAS_CHECK_FEATURE(COMDAT group support, gcc_cv_as_comdat_group_percent,
2264    [elf,2,15,91], [--fatal-warnings],
2265    [.section .text,"axG",%progbits,.foo,comdat])
2266 fi
2267 AC_DEFINE_UNQUOTED(HAVE_GAS_COMDAT_GROUP,
2268   [`if test $gcc_cv_as_comdat_group = yes || test $gcc_cv_as_comdat_group_percent = yes; then echo 1; else echo 0; fi`],
2269 [Define 0/1 if your assembler supports COMDAT group.])
2270
2271 # Thread-local storage - the check is heavily parametrized.
2272 conftest_s=
2273 tls_first_major=
2274 tls_first_minor=
2275 tls_as_opt=
2276 case "$target" in
2277 changequote(,)dnl
2278   alpha*-*-*)
2279     conftest_s='
2280         .section ".tdata","awT",@progbits
2281 foo:    .long   25
2282         .text
2283         ldq     $27,__tls_get_addr($29)         !literal!1
2284         lda     $16,foo($29)                    !tlsgd!1
2285         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
2286         ldq     $27,__tls_get_addr($29)         !literal!2
2287         lda     $16,foo($29)                    !tlsldm!2
2288         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
2289         ldq     $1,foo($29)                     !gotdtprel
2290         ldah    $2,foo($29)                     !dtprelhi
2291         lda     $3,foo($2)                      !dtprello
2292         lda     $4,foo($29)                     !dtprel
2293         ldq     $1,foo($29)                     !gottprel
2294         ldah    $2,foo($29)                     !tprelhi
2295         lda     $3,foo($2)                      !tprello
2296         lda     $4,foo($29)                     !tprel'
2297         tls_first_major=2
2298         tls_first_minor=13
2299         tls_as_opt=--fatal-warnings
2300         ;;
2301   frv*-*-*)
2302     conftest_s='
2303         .section ".tdata","awT",@progbits
2304 x:      .long   25
2305         .text
2306         call    #gettlsoff(x)'
2307         tls_first_major=2
2308         tls_first_minor=14
2309         ;;
2310   i[34567]86-*-*)
2311     conftest_s='
2312         .section ".tdata","awT",@progbits
2313 foo:    .long   25
2314         .text
2315         movl    %gs:0, %eax
2316         leal    foo@TLSGD(,%ebx,1), %eax
2317         leal    foo@TLSLDM(%ebx), %eax
2318         leal    foo@DTPOFF(%eax), %edx
2319         movl    foo@GOTTPOFF(%ebx), %eax
2320         subl    foo@GOTTPOFF(%ebx), %eax
2321         addl    foo@GOTNTPOFF(%ebx), %eax
2322         movl    foo@INDNTPOFF, %eax
2323         movl    $foo@TPOFF, %eax
2324         subl    $foo@TPOFF, %eax
2325         leal    foo@NTPOFF(%ecx), %eax'
2326         tls_first_major=2
2327         tls_first_minor=14
2328         tls_as_opt=--fatal-warnings
2329         ;;
2330   x86_64-*-*)
2331     conftest_s='
2332         .section ".tdata","awT",@progbits
2333 foo:    .long   25
2334         .text
2335         movq    %fs:0, %rax
2336         leaq    foo@TLSGD(%rip), %rdi
2337         leaq    foo@TLSLD(%rip), %rdi
2338         leaq    foo@DTPOFF(%rax), %rdx
2339         movq    foo@GOTTPOFF(%rip), %rax
2340         movq    $foo@TPOFF, %rax'
2341         tls_first_major=2
2342         tls_first_minor=14
2343         tls_as_opt=--fatal-warnings
2344         ;;
2345   ia64-*-*)
2346     conftest_s='
2347         .section ".tdata","awT",@progbits
2348 foo:    data8   25
2349         .text
2350         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2351         addl    r17 = @ltoff(@dtprel(foo#)), gp
2352         addl    r18 = @ltoff(@tprel(foo#)), gp
2353         addl    r19 = @dtprel(foo#), gp
2354         adds    r21 = @dtprel(foo#), r13
2355         movl    r23 = @dtprel(foo#)
2356         addl    r20 = @tprel(foo#), gp
2357         adds    r22 = @tprel(foo#), r13
2358         movl    r24 = @tprel(foo#)'
2359         tls_first_major=2
2360         tls_first_minor=13
2361         tls_as_opt=--fatal-warnings
2362         ;;
2363   mips*-*-*)
2364     conftest_s='
2365         .section .tdata,"awT",@progbits
2366 x:
2367         .word 2
2368         .text
2369         addiu $4, $28, %tlsgd(x)
2370         addiu $4, $28, %tlsldm(x)
2371         lui $4, %dtprel_hi(x)
2372         addiu $4, $4, %dtprel_lo(x)
2373         lw $4, %gottprel(x)($28)
2374         lui $4, %tprel_hi(x)
2375         addiu $4, $4, %tprel_lo(x)'
2376         tls_first_major=2
2377         tls_first_minor=16
2378         tls_as_opt='-32 --fatal-warnings'
2379         ;;
2380   powerpc-*-*)
2381     conftest_s='
2382         .section ".tdata","awT",@progbits
2383         .align 2
2384 ld0:    .space 4
2385 ld1:    .space 4
2386 x1:     .space 4
2387 x2:     .space 4
2388 x3:     .space 4
2389         .text
2390         addi 3,31,ld0@got@tlsgd
2391         bl __tls_get_addr
2392         addi 3,31,x1@got@tlsld
2393         bl __tls_get_addr
2394         addi 9,3,x1@dtprel
2395         addis 9,3,x2@dtprel@ha
2396         addi 9,9,x2@dtprel@l
2397         lwz 9,x3@got@tprel(31)
2398         add 9,9,x@tls
2399         addi 9,2,x1@tprel
2400         addis 9,2,x2@tprel@ha
2401         addi 9,9,x2@tprel@l'
2402         tls_first_major=2
2403         tls_first_minor=14
2404         tls_as_opt="-a32 --fatal-warnings"
2405         ;;
2406   powerpc64-*-*)
2407     conftest_s='
2408         .section ".tdata","awT",@progbits
2409         .align 3
2410 ld0:    .space 8
2411 ld1:    .space 8
2412 x1:     .space 8
2413 x2:     .space 8
2414 x3:     .space 8
2415         .text
2416         addi 3,2,ld0@got@tlsgd
2417         bl .__tls_get_addr
2418         nop
2419         addi 3,2,ld1@toc
2420         bl .__tls_get_addr
2421         nop
2422         addi 3,2,x1@got@tlsld
2423         bl .__tls_get_addr
2424         nop
2425         addi 9,3,x1@dtprel
2426         bl .__tls_get_addr
2427         nop
2428         addis 9,3,x2@dtprel@ha
2429         addi 9,9,x2@dtprel@l
2430         bl .__tls_get_addr
2431         nop
2432         ld 9,x3@got@dtprel(2)
2433         add 9,9,3
2434         bl .__tls_get_addr
2435         nop'
2436         tls_first_major=2
2437         tls_first_minor=14
2438         tls_as_opt="-a64 --fatal-warnings"
2439         ;;
2440   s390-*-*)
2441     conftest_s='
2442         .section ".tdata","awT",@progbits
2443 foo:    .long   25
2444         .text
2445         .long   foo@TLSGD
2446         .long   foo@TLSLDM
2447         .long   foo@DTPOFF
2448         .long   foo@NTPOFF
2449         .long   foo@GOTNTPOFF
2450         .long   foo@INDNTPOFF
2451         l       %r1,foo@GOTNTPOFF(%r12)
2452         l       %r1,0(%r1):tls_load:foo
2453         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2454         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2455         tls_first_major=2
2456         tls_first_minor=14
2457         tls_as_opt="-m31 --fatal-warnings"
2458         ;;
2459   s390x-*-*)
2460     conftest_s='
2461         .section ".tdata","awT",@progbits
2462 foo:    .long   25
2463         .text
2464         .quad   foo@TLSGD
2465         .quad   foo@TLSLDM
2466         .quad   foo@DTPOFF
2467         .quad   foo@NTPOFF
2468         .quad   foo@GOTNTPOFF
2469         lg      %r1,foo@GOTNTPOFF(%r12)
2470         larl    %r1,foo@INDNTPOFF
2471         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2472         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2473         tls_first_major=2
2474         tls_first_minor=14
2475         tls_as_opt="-m64 -Aesame --fatal-warnings"
2476         ;;
2477   sh-*-* | sh[34]-*-*)
2478     conftest_s='
2479         .section ".tdata","awT",@progbits
2480 foo:    .long   25
2481         .text
2482         .long   foo@TLSGD
2483         .long   foo@TLSLDM
2484         .long   foo@DTPOFF
2485         .long   foo@GOTTPOFF
2486         .long   foo@TPOFF'
2487         tls_first_major=2
2488         tls_first_minor=13
2489         tls_as_opt=--fatal-warnings
2490         ;;
2491   sparc*-*-*)
2492     case "$target" in
2493       sparc*-sun-solaris2.*)
2494         on_solaris=yes
2495         ;;
2496       *)
2497         on_solaris=no
2498         ;;
2499     esac
2500     if test x$on_solaris = xyes && test x$gas_flag = xno; then
2501       conftest_s='
2502         .section ".tdata",#alloc,#write,#tls
2503 foo:    .long   25
2504         .text
2505         sethi   %tgd_hi22(foo), %o0
2506         add     %o0, %tgd_lo10(foo), %o1
2507         add     %l7, %o1, %o0, %tgd_add(foo)
2508         call    __tls_get_addr, %tgd_call(foo)
2509         sethi   %tldm_hi22(foo), %l1
2510         add     %l1, %tldm_lo10(foo), %l2
2511         add     %l7, %l2, %o0, %tldm_add(foo)
2512         call    __tls_get_addr, %tldm_call(foo)
2513         sethi   %tldo_hix22(foo), %l3
2514         xor     %l3, %tldo_lox10(foo), %l4
2515         add     %o0, %l4, %l5, %tldo_add(foo)
2516         sethi   %tie_hi22(foo), %o3
2517         add     %o3, %tie_lo10(foo), %o3
2518         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2519         add     %g7, %o2, %o4, %tie_add(foo)
2520         sethi   %tle_hix22(foo), %l1
2521         xor     %l1, %tle_lox10(foo), %o5
2522         ld      [%g7 + %o5], %o1'
2523         tls_first_major=0
2524         tls_first_minor=0
2525     else
2526       conftest_s='
2527         .section ".tdata","awT",@progbits
2528 foo:    .long   25
2529         .text
2530         sethi   %tgd_hi22(foo), %o0
2531         add     %o0, %tgd_lo10(foo), %o1
2532         add     %l7, %o1, %o0, %tgd_add(foo)
2533         call    __tls_get_addr, %tgd_call(foo)
2534         sethi   %tldm_hi22(foo), %l1
2535         add     %l1, %tldm_lo10(foo), %l2
2536         add     %l7, %l2, %o0, %tldm_add(foo)
2537         call    __tls_get_addr, %tldm_call(foo)
2538         sethi   %tldo_hix22(foo), %l3
2539         xor     %l3, %tldo_lox10(foo), %l4
2540         add     %o0, %l4, %l5, %tldo_add(foo)
2541         sethi   %tie_hi22(foo), %o3
2542         add     %o3, %tie_lo10(foo), %o3
2543         ld      [%l7 + %o3], %o2, %tie_ld(foo)
2544         add     %g7, %o2, %o4, %tie_add(foo)
2545         sethi   %tle_hix22(foo), %l1
2546         xor     %l1, %tle_lox10(foo), %o5
2547         ld      [%g7 + %o5], %o1'
2548         tls_first_major=2
2549         tls_first_minor=14
2550         tls_as_opt="-32 --fatal-warnings"
2551       fi
2552         ;;
2553 changequote([,])dnl
2554 esac
2555 if test -z "$tls_first_major"; then
2556   : # If we don't have a check, assume no support.
2557 else
2558   gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls,
2559   [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],,
2560   [AC_DEFINE(HAVE_AS_TLS, 1,
2561             [Define if your assembler supports thread-local storage.])])
2562 fi
2563
2564 # Target-specific assembler checks.
2565
2566 AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option)
2567 gcc_cv_ld_static_dynamic=no
2568 if test $in_tree_ld = yes ; then
2569   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10; then
2570     gcc_cv_ld_static_dynamic=yes
2571   fi
2572 elif test x$gcc_cv_ld != x; then
2573         # Check if linker supports -Bstatic/-Bdynamic option
2574         if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \
2575           && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then
2576                 gcc_cv_ld_static_dynamic=yes
2577         fi
2578 fi
2579 if test x"$gcc_cv_ld_static_dynamic" = xyes; then
2580         AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1,
2581 [Define if your linker supports -Bstatic/-Bdynamic option.])
2582 fi
2583 AC_MSG_RESULT($gcc_cv_ld_static_dynamic)
2584
2585 if test x"$demangler_in_ld" = xyes; then
2586   AC_MSG_CHECKING(linker --demangle support)
2587   gcc_cv_ld_demangle=no
2588   if test $in_tree_ld = yes; then
2589     if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \
2590       gcc_cv_ld_demangle=yes
2591     fi
2592   elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then
2593     # Check if the GNU linker supports --demangle option
2594     if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then
2595       gcc_cv_ld_demangle=yes
2596     fi
2597   fi
2598   if test x"$gcc_cv_ld_demangle" = xyes; then
2599     AC_DEFINE(HAVE_LD_DEMANGLE, 1,
2600 [Define if your linker supports --demangle option.])
2601   fi
2602   AC_MSG_RESULT($gcc_cv_ld_demangle)
2603 fi
2604
2605 case "$target" in
2606   # All TARGET_ABI_OSF targets.
2607   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2608     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2609         gcc_cv_as_alpha_explicit_relocs, [2,12,0],,
2610 [       .set nomacro
2611         .text
2612         extbl   $3, $2, $3      !lituse_bytoff!1
2613         ldq     $2, a($29)      !literal!1
2614         ldq     $4, b($29)      !literal!2
2615         ldq_u   $3, 0($2)       !lituse_base!1
2616         ldq     $27, f($29)     !literal!5
2617         jsr     $26, ($27), f   !lituse_jsr!5
2618         ldah    $29, 0($26)     !gpdisp!3
2619         lda     $0, c($29)      !gprel
2620         ldah    $1, d($29)      !gprelhigh
2621         lda     $1, d($1)       !gprellow
2622         lda     $29, 0($29)     !gpdisp!3],,
2623     [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2624   [Define if your assembler supports explicit relocations.])])
2625     ;;
2626
2627   cris-*-*)
2628     gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
2629       gcc_cv_as_cris_no_mul_bug,[2,15,91],
2630       [-no-mul-bug-abort], [.text],,
2631       [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1,
2632                 [Define if your assembler supports the -no-mul-bug-abort option.])])
2633     ;;
2634
2635   sparc*-*-*)
2636     gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,,
2637       [.register %g2, #scratch],,
2638       [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2639                 [Define if your assembler supports .register.])])
2640
2641     gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,,
2642       [-relax], [.text],,
2643       [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2644                 [Define if your assembler supports -relax option.])])
2645
2646     gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs],
2647       gcc_cv_as_sparc_ua_pcrel,,
2648       [-K PIC],
2649 [.text
2650 foo:
2651         nop
2652 .data
2653 .align 4
2654 .byte 0
2655 .uaword %r_disp32(foo)],
2656       [if test x$gcc_cv_ld != x \
2657        && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2658          gcc_cv_as_sparc_ua_pcrel=yes
2659        fi
2660        rm -f conftest],
2661       [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2662                 [Define if your assembler and linker support unaligned PC relative relocs.])
2663
2664       gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols],
2665         gcc_cv_as_sparc_ua_pcrel_hidden,,
2666         [-K PIC],
2667 [.data
2668 .align 4
2669 .byte 0x31
2670 .uaword %r_disp32(foo)
2671 .byte 0x32, 0x33, 0x34
2672 .global foo
2673 .hidden foo
2674 foo:
2675 .skip 4],
2676         [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \
2677          && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2678          && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2679             | grep ' 31000000 07323334' > /dev/null 2>&1; then
2680             if $gcc_cv_objdump -R conftest 2> /dev/null \
2681                | grep 'DISP32' > /dev/null 2>&1; then
2682                 :
2683             else
2684                 gcc_cv_as_sparc_ua_pcrel_hidden=yes
2685             fi
2686          fi
2687          rm -f conftest],
2688          [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2689                    [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])])
2690     ]) # unaligned pcrel relocs
2691
2692     gcc_GAS_CHECK_FEATURE([offsetable %lo()],
2693       gcc_cv_as_sparc_offsetable_lo10,,
2694       [-xarch=v9],
2695 [.text
2696         or %g1, %lo(ab) + 12, %g1
2697         or %g1, %lo(ab + 12), %g1],
2698       [if test x$gcc_cv_objdump != x \
2699        && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \
2700           | grep ' 82106000 82106000' > /dev/null 2>&1; then
2701          gcc_cv_as_sparc_offsetable_lo10=yes
2702        fi],
2703        [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2704                  [Define if your assembler supports offsetable %lo().])])
2705     ;;
2706
2707 changequote(,)dnl
2708   i[34567]86-*-* | x86_64-*-*)
2709 changequote([,])dnl
2710     case $target_os in
2711       cygwin* | pe | mingw32*)
2712         # Used for DWARF 2 in PE
2713         gcc_GAS_CHECK_FEATURE([.secrel32 relocs],
2714           gcc_cv_as_ix86_pe_secrel32,
2715           [2,15,91],,
2716 [.text
2717 foo:    nop
2718 .data
2719         .secrel32 foo],
2720           [if test x$gcc_cv_ld != x \
2721            && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then
2722              gcc_cv_as_ix86_pe_secrel32=yes
2723            fi
2724            rm -f conftest],
2725           [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1,
2726             [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])])
2727         ;;
2728     esac
2729
2730     gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
2731        gcc_cv_as_ix86_filds_fists,
2732       [2,9,0],, [filds mem; fists mem],,
2733       [AC_DEFINE(HAVE_GAS_FILDS_FISTS, 1,
2734         [Define if your assembler uses the new HImode fild and fist notation.])])
2735
2736     gcc_GAS_CHECK_FEATURE([cmov syntax],
2737       gcc_cv_as_ix86_cmov_sun_syntax,,,
2738       [cmovl.l %edx, %eax],,
2739       [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1,
2740         [Define if your assembler supports the Sun syntax for cmov.])])
2741
2742     # This one is used unconditionally by i386.[ch]; it is to be defined
2743     # to 1 if the feature is present, 0 otherwise.
2744     gcc_GAS_CHECK_FEATURE([GOTOFF in data],
2745         gcc_cv_as_ix86_gotoff_in_data, [2,11,0],,
2746 [       .text
2747 .L0:
2748         nop
2749         .data
2750         .long .L0@GOTOFF])
2751     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2752       [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2753       [Define true if the assembler supports '.long foo@GOTOFF'.])
2754     ;;
2755
2756   ia64*-*-*)
2757     gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs],
2758         gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],,
2759 [       .text
2760         addl r15 = @ltoffx(x#), gp
2761         ;;
2762         ld8.mov r16 = [[r15]], x#],,
2763     [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2764           [Define if your assembler supports ltoffx and ldxmov relocations.])])
2765
2766     ;;
2767
2768   powerpc*-*-*)
2769     case $target in
2770       *-*-aix*) conftest_s='    .csect .text[[PR]]
2771         mfcr 3,128';;
2772       *-*-darwin*)
2773         gcc_GAS_CHECK_FEATURE([.machine directive support],
2774           gcc_cv_as_machine_directive,,,
2775           [     .machine ppc7400])
2776         if test x$gcc_cv_as_machine_directive != xyes; then
2777           echo "*** This target requires an assembler supporting \".machine\"" >&2
2778           echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2
2779           test x$build = x$target && exit 1
2780         fi
2781         conftest_s='    .text
2782         mfcr r3,128';;
2783       *) conftest_s='   .machine power4
2784         .text
2785         mfcr 3,128';;
2786     esac
2787
2788     gcc_GAS_CHECK_FEATURE([mfcr field support],
2789       gcc_cv_as_powerpc_mfcrf, [2,14,0],,
2790       [$conftest_s],,
2791       [AC_DEFINE(HAVE_AS_MFCRF, 1,
2792           [Define if your assembler supports mfcr field.])])
2793     ;;
2794
2795   mips*-*-*)
2796     gcc_GAS_CHECK_FEATURE([explicit relocation support],
2797       gcc_cv_as_mips_explicit_relocs, [2,14,0],,
2798 [       lw $4,%gp_rel(foo)($4)],,
2799       [if test x$target_cpu_default = x
2800        then target_cpu_default=MASK_EXPLICIT_RELOCS
2801        else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS"
2802        fi])
2803
2804     if test x$gas_flag = xyes \
2805        || test x"$host" != x"$build" \
2806        || test ! -x "$gcc_cv_as" \
2807        || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then
2808       :
2809     else
2810       echo "*** This configuration requires the GNU assembler" >&2
2811       exit 1
2812     fi
2813     ;;
2814 esac
2815 # ??? Not all targets support dwarf2 debug_line, even within a version
2816 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2817 # info to the output file.  So, as supported targets are added to gas 2.11,
2818 # add some instruction here to (also) show we expect this might work.
2819 # ??? Once 2.11 is released, probably need to add first known working
2820 # version to the per-target configury.
2821 case "$target" in
2822   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2823   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-* \
2824   | xstormy16*-*-* | cris-*-* | xtensa-*-*)
2825     insn="nop"
2826     ;;
2827   ia64*-*-* | s390*-*-*)
2828     insn="nop 0"
2829     ;;
2830   mmix-*-*)
2831     insn="swym 0"
2832     ;;
2833 esac
2834 if test x"$insn" != x; then
2835  conftest_s="\
2836         .file 1 \"conftest.s\"
2837         .loc 1 3 0
2838         $insn"
2839  gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support],
2840   gcc_cv_as_dwarf2_debug_line,
2841   [elf,2,11,0],, [$conftest_s],
2842   [if test x$gcc_cv_objdump != x \
2843    && $gcc_cv_objdump -h conftest.o 2> /dev/null \
2844       | grep debug_line > /dev/null 2>&1; then
2845      gcc_cv_as_dwarf2_debug_line=yes
2846    fi])
2847
2848 # The .debug_line file table must be in the exact order that
2849 # we specified the files, since these indices are also used
2850 # by DW_AT_decl_file.  Approximate this test by testing if
2851 # the assembler bitches if the same index is assigned twice.
2852  gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive],
2853   gcc_cv_as_dwarf2_file_buggy,,,
2854 [       .file 1 "foo.s"
2855         .file 1 "bar.s"])
2856
2857  if test $gcc_cv_as_dwarf2_debug_line = yes \
2858  && test $gcc_cv_as_dwarf2_file_buggy = no; then
2859         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2860   [Define if your assembler supports dwarf2 .file/.loc directives,
2861    and preserves file table indices exactly as given.])
2862  fi
2863
2864  gcc_GAS_CHECK_FEATURE([--gdwarf2 option],
2865   gcc_cv_as_gdwarf2_flag,
2866   [elf,2,11,0], [--gdwarf2], [$insn],,
2867   [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2868 [Define if your assembler supports the --gdwarf2 option.])])
2869
2870  gcc_GAS_CHECK_FEATURE([--gstabs option],
2871   gcc_cv_as_gstabs_flag,
2872   [elf,2,11,0], [--gstabs], [$insn],
2873   [# The native Solaris 9/Intel assembler doesn't understand --gstabs
2874    # and warns about it, but still exits successfully.  So check for
2875    # this.
2876    if AC_TRY_COMMAND([$gcc_cv_as --gstabs -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null])
2877    then :
2878    else gcc_cv_as_gstabs_flag=yes
2879    fi],
2880   [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2881 [Define if your assembler supports the --gstabs option.])])
2882 fi
2883
2884 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2885 gcc_cv_ld_ro_rw_mix=unknown
2886 if test $in_tree_ld = yes ; then
2887   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \
2888      && test $in_tree_ld_is_elf = yes; then
2889     gcc_cv_ld_ro_rw_mix=read-write
2890   fi
2891 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2892   echo '.section myfoosect, "a"' > conftest1.s
2893   echo '.section myfoosect, "aw"' > conftest2.s
2894   echo '.byte 1' >> conftest2.s
2895   echo '.section myfoosect, "a"' > conftest3.s
2896   echo '.byte 0' >> conftest3.s
2897   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2898      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2899      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2900      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2901         conftest2.o conftest3.o > /dev/null 2>&1; then
2902     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2903                          | sed -e '/myfoosect/!d' -e N`
2904     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2905       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2906         gcc_cv_ld_ro_rw_mix=read-only
2907       else
2908         gcc_cv_ld_ro_rw_mix=read-write
2909       fi
2910     fi
2911   fi
2912 changequote(,)dnl
2913   rm -f conftest.* conftest[123].*
2914 changequote([,])dnl
2915 fi
2916 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2917         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2918   [Define if your linker links a mix of read-only
2919    and read-write sections into a read-write section.])
2920 fi
2921 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2922
2923 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2924 gcc_cv_ld_eh_frame_hdr=no
2925 if test $in_tree_ld = yes ; then
2926   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \
2927      && test $in_tree_ld_is_elf = yes; then
2928     gcc_cv_ld_eh_frame_hdr=yes
2929   fi
2930 elif test x$gcc_cv_ld != x; then
2931         # Check if linker supports --eh-frame-hdr option
2932         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2933                 gcc_cv_ld_eh_frame_hdr=yes
2934         fi
2935 fi
2936 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2937         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2938 [Define if your linker supports --eh-frame-hdr option.])
2939 fi
2940 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2941
2942 AC_MSG_CHECKING(linker position independent executable support)
2943 gcc_cv_ld_pie=no
2944 if test $in_tree_ld = yes ; then
2945   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 \
2946      && test $in_tree_ld_is_elf = yes; then
2947     gcc_cv_ld_pie=yes
2948   fi
2949 elif test x$gcc_cv_ld != x; then
2950         # Check if linker supports -pie option
2951         if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
2952                 gcc_cv_ld_pie=yes
2953         fi
2954 fi
2955 if test x"$gcc_cv_ld_pie" = xyes; then
2956         AC_DEFINE(HAVE_LD_PIE, 1,
2957 [Define if your linker supports -pie option.])
2958 fi
2959 AC_MSG_RESULT($gcc_cv_ld_pie)
2960
2961 # --------
2962 # UNSORTED
2963 # --------
2964
2965 AC_CACHE_CHECK(linker --as-needed support,
2966 gcc_cv_ld_as_needed,
2967 [gcc_cv_ld_as_needed=no
2968 if test $in_tree_ld = yes ; then
2969   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
2970      && test $in_tree_ld_is_elf = yes; then
2971     gcc_cv_ld_as_needed=yes
2972   fi
2973 elif test x$gcc_cv_ld != x; then
2974         # Check if linker supports --as-needed and --no-as-needed options
2975         if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then
2976                 gcc_cv_ld_as_needed=yes
2977         fi
2978 fi
2979 ])
2980 if test x"$gcc_cv_ld_as_needed" = xyes; then
2981         AC_DEFINE(HAVE_LD_AS_NEEDED, 1,
2982 [Define if your linker supports --as-needed and --no-as-needed options.])
2983 fi
2984
2985 case "$target" in
2986   powerpc64*-*-linux*)
2987     AC_CACHE_CHECK(linker support for omitting dot symbols,
2988     gcc_cv_ld_no_dot_syms,
2989     [gcc_cv_ld_no_dot_syms=no
2990     if test $in_tree_ld = yes ; then
2991       if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then
2992         gcc_cv_ld_no_dot_syms=yes
2993       fi
2994     elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then
2995       cat > conftest1.s <<EOF
2996         .text
2997         bl .foo
2998 EOF
2999       cat > conftest2.s <<EOF
3000         .section ".opd","aw"
3001         .align 3
3002         .globl foo
3003         .type foo,@function
3004 foo:
3005         .quad .LEfoo,.TOC.@tocbase,0
3006         .text
3007 .LEfoo:
3008         blr
3009         .size foo,.-.LEfoo
3010 EOF
3011       if $gcc_cv_as -a64 -o conftest1.o conftest1.s > /dev/null 2>&1 \
3012          && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \
3013          && $gcc_cv_ld -melf64ppc -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then
3014         gcc_cv_ld_no_dot_syms=yes
3015       fi
3016       rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s
3017     fi
3018     ])
3019     if test x"$gcc_cv_ld_no_dot_syms" = xyes; then
3020       AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1,
3021     [Define if your PowerPC64 linker only needs function descriptor syms.])
3022     fi
3023     ;;
3024 esac
3025
3026 if test x$with_sysroot = x && test x$host = x$target \
3027    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
3028   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include",
3029 [Define to PREFIX/include if cpp should also search that directory.])
3030 fi
3031
3032 # Find out what GC implementation we want, or may, use.
3033 AC_ARG_WITH(gc,
3034 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
3035                           with the compiler],
3036 [case "$withval" in
3037   page)
3038     GGC=ggc-$withval
3039     ;;
3040   zone)
3041     GGC=ggc-$withval
3042     AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
3043     ;;
3044   *)
3045     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
3046     ;;
3047 esac],
3048 [GGC=ggc-page])
3049 AC_SUBST(GGC)
3050 echo "Using $GGC for garbage collection."
3051
3052 # Use the system's zlib library.
3053 zlibdir=-L../zlib
3054 zlibinc="-I\$(srcdir)/../zlib"
3055 AC_ARG_WITH(system-zlib,
3056 [  --with-system-zlib      use installed libz],
3057 zlibdir=
3058 zlibinc=
3059 )
3060 AC_SUBST(zlibdir)
3061 AC_SUBST(zlibinc)
3062
3063 dnl Very limited version of automake's enable-maintainer-mode
3064
3065 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
3066   dnl maintainer-mode is disabled by default
3067   AC_ARG_ENABLE(maintainer-mode,
3068 [  --enable-maintainer-mode
3069                           enable make rules and dependencies not useful
3070                           (and sometimes confusing) to the casual installer],
3071       maintainer_mode=$enableval,
3072       maintainer_mode=no)
3073
3074 AC_MSG_RESULT($maintainer_mode)
3075
3076 if test "$maintainer_mode" = "yes"; then
3077   MAINT=''
3078 else
3079   MAINT='#'
3080 fi
3081 AC_SUBST(MAINT)dnl
3082
3083 # --------------
3084 # Language hooks
3085 # --------------
3086
3087 # Make empty files to contain the specs and options for each language.
3088 # Then add #include lines to for a compiler that has specs and/or options.
3089
3090 lang_opt_files=
3091 lang_specs_files=
3092 lang_tree_files=
3093 for subdir in . $subdirs
3094 do
3095         if test -f $srcdir/$subdir/lang.opt; then
3096             lang_opt_files="$lang_opt_files $srcdir/$subdir/lang.opt"
3097         fi
3098         if test -f $srcdir/$subdir/lang-specs.h; then
3099             lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
3100         fi
3101         if test -f $srcdir/$subdir/$subdir-tree.def; then
3102             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
3103         fi
3104 done
3105
3106 # These (without "all_") are set in each config-lang.in.
3107 # `language' must be a single word so is spelled singularly.
3108 all_languages=
3109 all_boot_languages=
3110 all_compilers=
3111 all_stagestuff=
3112 all_outputs='Makefile gccbug mklibgcc libada-mk'
3113 # List of language makefile fragments.
3114 all_lang_makefrags=
3115 # List of language subdirectory makefiles.  Deprecated.
3116 all_lang_makefiles=
3117 # Files for gengtype
3118 all_gtfiles="$target_gtfiles"
3119 # Files for gengtype with language
3120 all_gtfiles_files_langs=
3121 all_gtfiles_files_files=
3122
3123 # Add the language fragments.
3124 # Languages are added via two mechanisms.  Some information must be
3125 # recorded in makefile variables, these are defined in config-lang.in.
3126 # We accumulate them and plug them into the main Makefile.
3127 # The other mechanism is a set of hooks for each of the main targets
3128 # like `clean', `install', etc.
3129
3130 language_hooks="Make-hooks"
3131
3132 for s in $subdirs
3133 do
3134                 language=
3135                 boot_language=
3136                 compilers=
3137                 stagestuff=
3138                 outputs=
3139                 gtfiles=
3140                 . ${srcdir}/$s/config-lang.in
3141                 if test "x$language" = x
3142                 then
3143                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
3144                         exit 1
3145                 fi
3146                 all_lang_makefrags="$all_lang_makefrags \$(srcdir)/$s/Make-lang.in"
3147                 if test -f ${srcdir}/$s/Makefile.in
3148                 then all_lang_makefiles="$s/Makefile"
3149                 fi
3150                 all_languages="$all_languages $language"
3151                 if test "x$boot_language" = xyes
3152                 then
3153                         all_boot_languages="$all_boot_languages $language"
3154                 fi
3155                 all_compilers="$all_compilers $compilers"
3156                 all_stagestuff="$all_stagestuff $stagestuff"
3157                 all_outputs="$all_outputs $outputs"
3158                 all_gtfiles="$all_gtfiles $gtfiles"
3159                 for f in $gtfiles
3160                 do
3161                          all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3162                          all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3163                 done
3164 done
3165
3166 # Pick up gtfiles for c
3167 gtfiles=
3168 s="c"
3169 . ${srcdir}/c-config-lang.in
3170 all_gtfiles="$all_gtfiles $gtfiles"
3171 for f in $gtfiles
3172 do
3173         all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
3174         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
3175 done
3176
3177 check_languages=
3178 for language in $all_languages
3179 do
3180                 check_languages="$check_languages check-$language"
3181 done
3182
3183 # We link each language in with a set of hooks, reached indirectly via
3184 # lang.${target}.
3185
3186 rm -f Make-hooks
3187 touch Make-hooks
3188 target_list="all.build all.cross start.encap rest.encap tags \
3189         install-normal install-common install-man \
3190         uninstall info man srcextra srcman srcinfo \
3191         mostlyclean clean distclean maintainer-clean \
3192         stage1 stage2 stage3 stage4 stageprofile stagefeedback"
3193 for t in $target_list
3194 do
3195         x=
3196         for lang in $all_languages
3197         do
3198                         x="$x $lang.$t"
3199         done
3200         echo "lang.$t: $x" >> Make-hooks
3201 done
3202
3203 # --------
3204 # UNSORTED
3205 # --------
3206
3207 # Create .gdbinit.
3208
3209 echo "dir ." > .gdbinit
3210 echo "dir ${srcdir}" >> .gdbinit
3211 if test x$gdb_needs_out_file_path = xyes
3212 then
3213         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
3214 fi
3215 if test "x$subdirs" != x; then
3216         for s in $subdirs
3217         do
3218                 echo "dir ${srcdir}/$s" >> .gdbinit
3219         done
3220 fi
3221 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
3222
3223 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
3224 # absolute path for gcc_tooldir based on inserting the number of up-directory
3225 # movements required to get from $(exec_prefix) to $(prefix) into the basic
3226 # $(libsubdir)/@(unlibsubdir) based path.
3227 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
3228 # make and thus we'd get different behavior depending on where we built the
3229 # sources.
3230 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
3231     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_noncanonical)'
3232 else
3233 changequote(<<, >>)dnl
3234 # An explanation of the sed strings:
3235 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
3236 #  -e 's|/$||'            match a trailing forward slash and eliminates it
3237 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
3238 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
3239 #
3240 # (*) Note this pattern overwrites the first character of the string
3241 # with a forward slash if one is not already present.  This is not a
3242 # problem because the exact names of the sub-directories concerned is
3243 # unimportant, just the number of them matters.
3244 #
3245 # The practical upshot of these patterns is like this:
3246 #
3247 #  prefix     exec_prefix        result
3248 #  ------     -----------        ------
3249 #   /foo        /foo/bar          ../
3250 #   /foo/       /foo/bar          ../
3251 #   /foo        /foo/bar/         ../
3252 #   /foo/       /foo/bar/         ../
3253 #   /foo        /foo/bar/ugg      ../../
3254 #
3255     dollar='$$'
3256     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_noncanonical)"
3257 changequote([, ])dnl
3258 fi
3259 AC_SUBST(gcc_tooldir)
3260 AC_SUBST(dollar)
3261
3262 # Find a directory in which to install a shared libgcc.
3263
3264 AC_ARG_ENABLE(version-specific-runtime-libs,
3265 [  --enable-version-specific-runtime-libs
3266                           specify that runtime libraries should be
3267                           installed in a compiler-specific directory])
3268
3269 AC_ARG_WITH(slibdir,
3270 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
3271 slibdir="$with_slibdir",
3272 if test "${enable_version_specific_runtime_libs+set}" = set; then
3273   slibdir='$(libsubdir)'
3274 elif test "$host" != "$target"; then
3275   slibdir='$(build_tooldir)/lib'
3276 else
3277   slibdir='$(libdir)'
3278 fi)
3279 AC_SUBST(slibdir)
3280
3281 objdir=`${PWDCMD-pwd}`
3282 AC_SUBST(objdir)
3283
3284 # Substitute configuration variables
3285 AC_SUBST(subdirs)
3286 AC_SUBST(srcdir)
3287 AC_SUBST(all_boot_languages)
3288 AC_SUBST(all_compilers)
3289 AC_SUBST(all_gtfiles)
3290 AC_SUBST(all_gtfiles_files_langs)
3291 AC_SUBST(all_gtfiles_files_files)
3292 AC_SUBST(all_lang_makefrags)
3293 AC_SUBST(all_lang_makefiles)
3294 AC_SUBST(all_languages)
3295 AC_SUBST(all_stagestuff)
3296 AC_SUBST(build_exeext)
3297 AC_SUBST(build_install_headers_dir)
3298 AC_SUBST(build_xm_file_list)
3299 AC_SUBST(build_xm_include_list)
3300 AC_SUBST(build_xm_defines)
3301 AC_SUBST(check_languages)
3302 AC_SUBST(cc_set_by_configure)
3303 AC_SUBST(quoted_cc_set_by_configure)
3304 AC_SUBST(cpp_install_dir)
3305 AC_SUBST(xmake_file)
3306 AC_SUBST(tmake_file)
3307 AC_SUBST(extra_gcc_objs)
3308 AC_SUBST(extra_headers_list)
3309 AC_SUBST(extra_objs)
3310 AC_SUBST(extra_parts)
3311 AC_SUBST(extra_passes)
3312 AC_SUBST(extra_programs)
3313 AC_SUBST(float_h_file)
3314 AC_SUBST(gcc_config_arguments)
3315 AC_SUBST(gcc_gxx_include_dir)
3316 AC_SUBST(libstdcxx_incdir)
3317 AC_SUBST(host_exeext)
3318 AC_SUBST(host_xm_file_list)
3319 AC_SUBST(host_xm_include_list)
3320 AC_SUBST(host_xm_defines)
3321 AC_SUBST(out_host_hook_obj)
3322 AC_SUBST(install)
3323 AC_SUBST(lang_opt_files)
3324 AC_SUBST(lang_specs_files)
3325 AC_SUBST(lang_tree_files)
3326 AC_SUBST(local_prefix)
3327 AC_SUBST(md_file)
3328 AC_SUBST(objc_boehm_gc)
3329 AC_SUBST(out_file)
3330 AC_SUBST(out_object_file)
3331 AC_SUBST(stage_prefix_set_by_configure)
3332 AC_SUBST(quoted_stage_prefix_set_by_configure)
3333 AC_SUBST(thread_file)
3334 AC_SUBST(tm_file_list)
3335 AC_SUBST(tm_include_list)
3336 AC_SUBST(tm_defines)
3337 AC_SUBST(tm_p_file_list)
3338 AC_SUBST(tm_p_include_list)
3339 AC_SUBST(xm_file_list)
3340 AC_SUBST(xm_include_list)
3341 AC_SUBST(xm_defines)
3342 AC_SUBST(c_target_objs)
3343 AC_SUBST(cxx_target_objs)
3344 AC_SUBST(target_cpu_default)
3345
3346 AC_SUBST_FILE(language_hooks)
3347
3348 TL_AC_GNU_MAKE_GCC_LIB_PATH
3349
3350 # Echo link setup.
3351 if test x${build} = x${host} ; then
3352   if test x${host} = x${target} ; then
3353     echo "Links are now set up to build a native compiler for ${target}." 1>&2
3354   else
3355     echo "Links are now set up to build a cross-compiler" 1>&2
3356     echo " from ${host} to ${target}." 1>&2
3357   fi
3358 else
3359   if test x${host} = x${target} ; then
3360     echo "Links are now set up to build (on ${build}) a native compiler" 1>&2
3361     echo " for ${target}." 1>&2
3362   else
3363     echo "Links are now set up to build (on ${build}) a cross-compiler" 1>&2
3364     echo " from ${host} to ${target}." 1>&2
3365   fi
3366 fi
3367
3368 AC_ARG_VAR(GMPLIBS,[How to link GMP])
3369 AC_ARG_VAR(GMPINC,[How to find GMP include files])
3370
3371 # Configure the subdirectories
3372 # AC_CONFIG_SUBDIRS($subdirs)
3373
3374 # Create the Makefile
3375 # and configure language subdirectories
3376 AC_CONFIG_FILES($all_outputs)
3377
3378 AC_CONFIG_COMMANDS([default],
3379 [
3380 case ${CONFIG_HEADERS} in
3381   *auto-host.h:config.in*)
3382   echo > cstamp-h ;;
3383 esac
3384 # Make sure all the subdirs exist.
3385 for d in $subdirs doc build
3386 do
3387     test -d $d || mkdir $d
3388 done
3389 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3390 # bootstrapping and the installation procedure can still use
3391 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3392 # FLAGS_TO_PASS has been modified to solve the problem there.
3393 # This is virtually a duplicate of what happens in configure.lang; we do
3394 # an extra check to make sure this only happens if ln -s can be used.
3395 case "$LN_S" in
3396   *-s*)
3397     for d in ${subdirs} ; do
3398         STARTDIR=`${PWDCMD-pwd}`
3399         cd $d
3400         for t in stage1 stage2 stage3 stage4 stageprofile stagefeedback include
3401         do
3402                 rm -f $t
3403                 $LN_S ../$t $t 2>/dev/null
3404         done
3405         cd $STARTDIR
3406     done
3407   ;;
3408 esac
3409 ],
3410 [subdirs='$subdirs'])
3411 AC_OUTPUT