gcc/configure.ac

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