gcc/configure.in

   1 # configure.in for GCC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003
   5 # Free Software Foundation, Inc.
   6
   7 #This file is part of GCC.
   8
   9 #GCC is free software; you can redistribute it and/or modify it under
  10 #the terms of the GNU General Public License as published by the Free
  11 #Software Foundation; either version 2, or (at your option) any later
  12 #version.
  13
  14 #GCC is distributed in the hope that it will be useful, but WITHOUT
  15 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 #FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 #for more details.
  18
  19 #You should have received a copy of the GNU General Public License
  20 #along with GCC; see the file COPYING.  If not, write to the Free
  21 #Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  22 #02111-1307, USA.
  23
  24 # --------------------------------
  25 # Initialization and sanity checks
  26 # --------------------------------
  27
  28 AC_PREREQ(2.13)
  29 AC_INIT(tree.c)
  30 AC_CONFIG_HEADER(auto-host.h:config.in)
  31
  32 # Determine the host, build, and target systems
  33 AC_CANONICAL_SYSTEM
  34
  35 # Define variables host_canonical and build_canonical
  36 build_canonical=${build}
  37 host_canonical=${host}
  38 AC_SUBST(build_canonical)
  39 AC_SUBST(host_canonical)
  40
  41 target_subdir=
  42 if test "${host}" != "${target}" ; then
  43     target_subdir=${target_alias}/
  44 fi
  45 AC_SUBST(target_subdir)
  46
  47 # Set program_transform_name
  48 AC_ARG_PROGRAM
  49
  50 # Check for bogus environment variables.
  51 # Test if LIBRARY_PATH contains the notation for the current directory
  52 # since this would lead to problems installing/building glibc.
  53 # LIBRARY_PATH contains the current directory if one of the following
  54 # is true:
  55 # - one of the terminals (":" and ";") is the first or last sign
  56 # - two terminals occur directly after each other
  57 # - the path contains an element with a dot in it
  58 AC_MSG_CHECKING(LIBRARY_PATH variable)
  59 changequote(,)dnl
  60 case ${LIBRARY_PATH} in
  61   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  62     library_path_setting="contains current directory"
  63     ;;
  64   *)
  65     library_path_setting="ok"
  66     ;;
  67 esac
  68 changequote([,])dnl
  69 AC_MSG_RESULT($library_path_setting)
  70 if test "$library_path_setting" != "ok"; then
  71 AC_MSG_ERROR([
  72 *** LIBRARY_PATH shouldn't contain the current directory when
  73 *** building gcc. Please change the environment variable
  74 *** and run configure again.])
  75 fi
  76
  77 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  78 # since this would lead to problems installing/building glibc.
  79 # GCC_EXEC_PREFIX contains the current directory if one of the following
  80 # is true:
  81 # - one of the terminals (":" and ";") is the first or last sign
  82 # - two terminals occur directly after each other
  83 # - the path contains an element with a dot in it
  84 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  85 changequote(,)dnl
  86 case ${GCC_EXEC_PREFIX} in
  87   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  88     gcc_exec_prefix_setting="contains current directory"
  89     ;;
  90   *)
  91     gcc_exec_prefix_setting="ok"
  92     ;;
  93 esac
  94 changequote([,])dnl
  95 AC_MSG_RESULT($gcc_exec_prefix_setting)
  96 if test "$gcc_exec_prefix_setting" != "ok"; then
  97 AC_MSG_ERROR([
  98 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  99 *** building gcc. Please change the environment variable
 100 *** and run configure again.])
 101 fi
 102
 103 # -----------
 104 # Directories
 105 # -----------
 106
 107 # Specify the local prefix
 108 local_prefix=
 109 AC_ARG_WITH(local-prefix,
 110 [  --with-local-prefix=DIR specifies directory to put local include],
 111 [case "${withval}" in
 112 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 113 no)     ;;
 114 *)      local_prefix=$with_local_prefix ;;
 115 esac])
 116
 117 # Default local prefix if it is empty
 118 if test x$local_prefix = x; then
 119         local_prefix=/usr/local
 120 fi
 121
 122 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 123 # passed in by the toplevel make and thus we'd get different behavior
 124 # depending on where we built the sources.
 125 gcc_gxx_include_dir=
 126 # Specify the g++ header file directory
 127 AC_ARG_WITH(gxx-include-dir,
 128 [  --with-gxx-include-dir=DIR
 129                           specifies directory to put g++ header files],
 130 [case "${withval}" in
 131 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 132 no)     ;;
 133 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 134 esac])
 135
 136 if test x${gcc_gxx_include_dir} = x; then
 137   if test x${enable_version_specific_runtime_libs} = xyes; then
 138     gcc_gxx_include_dir='${libsubdir}/include/c++'
 139   else
 140     topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
 141 changequote(<<, >>)dnl
 142     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 143 changequote([, ])dnl
 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=$withval
 155 fi])
 156
 157 # -------------------
 158 # Find default linker
 159 # -------------------
 160
 161 # With GNU ld
 162 AC_ARG_WITH(gnu-ld,
 163 [  --with-gnu-ld           arrange to work with GNU ld.],
 164 gnu_ld_flag="$with_gnu_ld",
 165 gnu_ld_flag=no)
 166
 167 # With pre-defined ld
 168 AC_ARG_WITH(ld,
 169 [  --with-ld               arrange to use the specified ld (full pathname)],
 170 DEFAULT_LINKER="$with_ld")
 171 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 172   if test ! -x "$DEFAULT_LINKER"; then
 173     AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 174   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 175     gnu_ld_flag=yes
 176   fi
 177   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 178         [Define to enable the use of a default linker.])
 179 fi
 180
 181 AC_MSG_CHECKING([whether a default linker was specified])
 182 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 183   if test x"$gnu_ld_flag" = x"no"; then
 184     AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 185   else
 186     AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 187   fi
 188 else
 189   AC_MSG_RESULT(no)
 190 fi
 191
 192 # ----------------------
 193 # Find default assembler
 194 # ----------------------
 195
 196 # With GNU as
 197 AC_ARG_WITH(gnu-as,
 198 [  --with-gnu-as           arrange to work with GNU as],
 199 gas_flag="$with_gnu_as",
 200 gas_flag=no)
 201
 202 AC_ARG_WITH(as,
 203 [  --with-as               arrange to use the specified as (full pathname)],
 204 DEFAULT_ASSEMBLER="$with_as")
 205 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 206   if test ! -x "$DEFAULT_ASSEMBLER"; then
 207     AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 208   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 209     gas_flag=yes
 210   fi
 211   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 212         [Define to enable the use of a default assembler.])
 213 fi
 214
 215 AC_MSG_CHECKING([whether a default assembler was specified])
 216 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 217   if test x"$gas_flag" = x"no"; then
 218     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 219   else
 220     AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 221   fi
 222 else
 223   AC_MSG_RESULT(no)
 224 fi
 225
 226 # ---------------
 227 # Find C compiler
 228 # ---------------
 229
 230 # Find the native compiler
 231 AC_PROG_CC
 232 AC_PROG_CC_C_O
 233 # autoconf is lame and doesn't give us any substitution variable for this.
 234 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 235   NO_MINUS_C_MINUS_O=yes
 236 else
 237   OUTPUT_OPTION='-o $@'
 238 fi
 239 AC_SUBST(NO_MINUS_C_MINUS_O)
 240 AC_SUBST(OUTPUT_OPTION)
 241
 242 # -------------------------
 243 # Check C compiler features
 244 # -------------------------
 245
 246 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 247 ac_cv_prog_cc_no_long_long,
 248 [save_CFLAGS="$CFLAGS"
 249 CFLAGS="-Wno-long-long"
 250 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 251                ac_cv_prog_cc_no_long_long=no)
 252 CFLAGS="$save_CFLAGS"])
 253
 254 AC_PROG_CPP
 255 AC_C_INLINE
 256 gcc_AC_C_VOLATILE
 257
 258 gcc_AC_C_LONG_DOUBLE
 259 gcc_AC_C_LONG_LONG
 260 gcc_AC_C__BOOL
 261
 262 # sizeof(char) is 1 by definition.
 263 AC_COMPILE_CHECK_SIZEOF(short)
 264 AC_COMPILE_CHECK_SIZEOF(int)
 265 AC_COMPILE_CHECK_SIZEOF(long)
 266 if test $ac_cv_c_long_long = yes; then
 267   AC_COMPILE_CHECK_SIZEOF(long long)
 268 fi
 269 if test $ac_cv_c___int64 = yes; then
 270   AC_COMPILE_CHECK_SIZEOF(__int64)
 271 fi
 272
 273 gcc_AC_C_CHARSET
 274
 275 # -----------------
 276 # Find Ada compiler
 277 # -----------------
 278
 279 # See if GNAT has been installed
 280 gcc_AC_PROG_GNAT
 281
 282 if test x$have_gnat != xno ; then
 283 AC_CACHE_CHECK(whether ${ADAC} accepts -Wno-long-long,
 284 ac_cv_prog_adac_no_long_long,
 285 [cat >conftest.adb <<EOF
 286 procedure conftest is begin null; end conftest;
 287 EOF
 288 if $ADAC -Wno-long-long -c conftest.adb 1>&5 2>&5 ; then
 289   ac_cv_prog_adac_no_long_long=yes
 290 else
 291   ac_cv_prog_adac_no_long_long=no
 292 fi
 293 rm -f conftest*])
 294 else
 295   ac_cv_prog_adac_no_long_long=yes
 296 fi
 297
 298 # ---------------------
 299 # Warnings and checking
 300 # ---------------------
 301
 302 strict1_warn=
 303 if test $ac_cv_prog_cc_no_long_long = yes && \
 304     test $ac_cv_prog_adac_no_long_long = yes ; then
 305   strict1_warn="-pedantic -Wno-long-long"
 306 fi
 307 AC_SUBST(strict1_warn)
 308
 309 # If the native compiler is GCC, we can enable warnings even in stage1.
 310 # That's useful for people building cross-compilers, or just running a
 311 # quick `make'.
 312 warn_cflags=
 313 if test "x$GCC" = "xyes"; then
 314   warn_cflags='$(GCC_WARN_CFLAGS)'
 315 fi
 316 AC_SUBST(warn_cflags)
 317
 318 # Enable -Werror in bootstrap stage2 and later.
 319 # Change the default to "no" on release branches.
 320 AC_ARG_ENABLE(werror,
 321 [  --enable-werror         enable -Werror in bootstrap stage2 and later], [],
 322 [enable_werror=yes])
 323 if test x$enable_werror = xyes ; then
 324   WERROR=-Werror
 325 fi
 326 AC_SUBST(WERROR)
 327
 328 # Enable expensive internal checks
 329 AC_ARG_ENABLE(checking,
 330 [  --enable-checking[=LIST]
 331                           enable expensive run-time checks.  With LIST,
 332                           enable only specific categories of checks.
 333                           Categories are: misc,tree,rtl,rtlflag,gc,gcac;
 334                           default is misc,tree,gc,rtlflag],
 335 [ac_checking=
 336 ac_tree_checking=
 337 ac_rtl_checking=
 338 ac_rtlflag_checking=
 339 ac_gc_checking=
 340 ac_gc_always_collect=
 341 case "${enableval}" in
 342 yes)    ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;
 343         ac_rtlflag_checking=1 ;;
 344 no)     ;;
 345 *)      IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 346         set fnord $enableval; shift
 347         IFS="$ac_save_IFS"
 348         for check
 349         do
 350                 case $check in
 351                 misc)   ac_checking=1 ;;
 352                 tree)   ac_tree_checking=1 ;;
 353                 rtlflag)        ac_rtlflag_checking=1 ;;
 354                 rtl)    ac_rtl_checking=1 ;;
 355                 gc)     ac_gc_checking=1 ;;
 356                 gcac)   ac_gc_always_collect=1 ;;
 357                 valgrind)       ac_checking_valgrind=1 ;;
 358                 *)      AC_MSG_ERROR(unknown check category $check) ;;
 359                 esac
 360         done
 361         ;;
 362 esac
 363 ],
 364 # Enable some checks by default for development versions of GCC
 365 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1; ac_rtlflag_checking=1;])
 366 nocommon_flag=""
 367 if test x$ac_checking != x ; then
 368   AC_DEFINE(ENABLE_CHECKING, 1,
 369 [Define if you want more run-time sanity checks.  This one gets a grab
 370    bag of miscellaneous but relatively cheap checks.])
 371   nocommon_flag=-fno-common
 372 fi
 373 AC_SUBST(nocommon_flag)
 374 if test x$ac_tree_checking != x ; then
 375   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 376 [Define if you want all operations on trees (the basic data
 377    structure of the front ends) to be checked for dynamic type safety
 378    at runtime.  This is moderately expensive.])
 379 fi
 380 if test x$ac_rtl_checking != x ; then
 381   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 382 [Define if you want all operations on RTL (the basic data structure
 383    of the optimizer and back end) to be checked for dynamic type safety
 384    at runtime.  This is quite expensive.])
 385 fi
 386 if test x$ac_rtlflag_checking != x ; then
 387   AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1,
 388 [Define if you want RTL flag accesses to be checked against the RTL
 389    codes that are supported for each access macro.  This is relatively
 390    cheap.])
 391 fi
 392 if test x$ac_gc_checking != x ; then
 393   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 394 [Define if you want the garbage collector to do object poisoning and
 395    other memory allocation checks.  This is quite expensive.])
 396 fi
 397 if test x$ac_gc_always_collect != x ; then
 398   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 399 [Define if you want the garbage collector to operate in maximally
 400    paranoid mode, validating the entire heap and collecting garbage at
 401    every opportunity.  This is extremely expensive.])
 402 fi
 403 valgrind_path_defines=
 404 valgrind_command=
 405 if test x$ac_checking_valgrind != x ; then
 406   # It is certainly possible that there's valgrind but no valgrind.h.
 407   # GCC relies on making annotations so we must have both.
 408   AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
 409   AC_TRY_CPP(
 410     [#include <memcheck.h>
 411 #ifndef VALGRIND_DISCARD
 412 #error VALGRIND_DISCARD not defined
 413 #endif],
 414   [gcc_cv_header_memcheck_h=yes],
 415   gcc_cv_header_memcheck_h=no)
 416   AC_MSG_RESULT($gcc_cv_header_memcheck_h)
 417   AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 418   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 419         [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
 420   if test "x$valgrind_path" = "x" || (test $have_valgrind_h = no && test $gcc_cv_header_memcheck_h = no); then
 421         AC_MSG_ERROR([*** Can't find both valgrind and valgrind.h/memcheck.h])
 422   fi
 423   valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"'
 424   valgrind_command="$valgrind_path -q"
 425   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 426 [Define if you want to run subprograms and generated programs
 427    through valgrind (a memory checker).  This is extremely expensive.])
 428   if test $gcc_cv_header_memcheck_h = yes; then
 429     AC_DEFINE(HAVE_MEMCHECK_H, 1,
 430         [Define if valgrind's memcheck.h header is installed.])
 431   fi
 432 fi
 433 AC_SUBST(valgrind_path_defines)
 434 AC_SUBST(valgrind_command)
 435
 436 # Enable code coverage collection
 437 AC_ARG_ENABLE(coverage,
 438 [  --enable-coverage[=LEVEL]
 439                           enable compiler\'s code coverage collection.
 440                           Use to measure compiler performance and locate
 441                           unused parts of the compiler. With LEVEL, specify
 442                           optimization. Values are opt, noopt,
 443                           default is noopt],
 444 [case "${enableval}" in
 445 yes|noopt)
 446         coverage_flags="-fprofile-arcs -ftest-coverage -O0 -DSELF_COVERAGE=1"
 447         ;;
 448 opt)
 449         coverage_flags="-fprofile-arcs -ftest-coverage -O2 -DSELF_COVERAGE=2"
 450         ;;
 451 *)
 452         AC_MSG_ERROR(unknown coverage setting $enableval)
 453         ;;
 454 esac],
 455 [coverage_flags=""])
 456 AC_SUBST(coverage_flags)
 457
 458 # -------------------------------
 459 # Miscenalleous configure options
 460 # -------------------------------
 461
 462 # With stabs
 463 AC_ARG_WITH(stabs,
 464 [  --with-stabs            arrange to use stabs instead of host debug format],
 465 stabs="$with_stabs",
 466 stabs=no)
 467
 468 # With ELF
 469 AC_ARG_WITH(elf,
 470 [  --with-elf              arrange to use ELF instead of host debug format],
 471 elf="$with_elf",
 472 elf=no)
 473
 474 # Determine whether or not multilibs are enabled.
 475 AC_ARG_ENABLE(multilib,
 476 [  --enable-multilib       enable library support for multiple ABIs],
 477 [], [enable_multilib=yes])
 478 AC_SUBST(enable_multilib)
 479
 480 # Enable __cxa_atexit for C++.
 481 AC_ARG_ENABLE(__cxa_atexit,
 482 [  --enable-__cxa_atexit   enable __cxa_atexit for C++],
 483 [], [])
 484 if test x$enable___cxa_atexit = xyes; then
 485   AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 1,
 486   [Define if you want to use __cxa_atexit, rather than atexit, to
 487    register C++ destructors for local statics and global objects.
 488    This is essential for fully standards-compliant handling of
 489    destructors, but requires __cxa_atexit in libc.])
 490 fi
 491
 492 # Enable Multibyte Characters for C/C++
 493 AC_ARG_ENABLE(c-mbchar,
 494 [  --enable-c-mbchar       enable multibyte characters for C and C++],
 495 if test x$enable_c_mbchar != xno; then
 496   AC_DEFINE(MULTIBYTE_CHARS, 1,
 497   [Define if you want the C and C++ compilers to support multibyte
 498    character sets for source code.])
 499 fi)
 500
 501 # Enable threads
 502 # Pass with no value to take the default
 503 # Pass with a value to specify a thread package
 504 AC_ARG_ENABLE(threads,
 505 [  --enable-threads        enable thread usage for target GCC
 506   --enable-threads=LIB    use LIB thread package for target GCC],,
 507 enable_threads='')
 508
 509 enable_threads_flag=$enable_threads
 510 # Check if a valid thread package
 511 case x${enable_threads_flag} in
 512         x | xno)
 513                 # No threads
 514                 target_thread_file='single'
 515                 ;;
 516         xyes)
 517                 # default
 518                 target_thread_file=''
 519                 ;;
 520         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 521         xsolaris | xwin32 | xdce | xrtems| xvxworks | xaix)
 522                 target_thread_file=$enable_threads_flag
 523                 ;;
 524         *)
 525                 echo "$enable_threads is an unknown thread package" 1>&2
 526                 exit 1
 527                 ;;
 528 esac
 529
 530 AC_ARG_ENABLE(objc-gc,
 531 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 532                           the GNU Objective-C runtime],
 533 if test x$enable_objc_gc = xno; then
 534         objc_boehm_gc=''
 535 else
 536         objc_boehm_gc=1
 537 fi,
 538 objc_boehm_gc='')
 539
 540 AC_ARG_WITH(dwarf2,
 541 [  --with-dwarf2           force the default debug format to be DWARF 2],
 542 dwarf2="$with_dwarf2",
 543 dwarf2=no)
 544
 545 AC_ARG_ENABLE(shared,
 546 [  --disable-shared        don't provide a shared libgcc],
 547 [
 548   case $enable_shared in
 549   yes | no) ;;
 550   *)
 551     enable_shared=no
 552     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 553     for pkg in $enableval; do
 554       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 555         enable_shared=yes
 556       fi
 557     done
 558     IFS="$ac_save_ifs"
 559     ;;
 560   esac
 561 ], [enable_shared=yes])
 562 AC_SUBST(enable_shared)
 563
 564 AC_ARG_WITH(sysroot,
 565 [  --with-sysroot[=DIR] Search for usr/lib, usr/include, et al, within DIR.],
 566 [
 567  case ${with_sysroot} in
 568  yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_alias}/sys-root' ;;
 569  *) TARGET_SYSTEM_ROOT=$with_sysroot ;;
 570  esac
 571
 572  TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"'
 573  CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$(NATIVE_SYSTEM_HEADER_DIR)'
 574
 575  if test "x$exec_prefix" = xNONE; then
 576   if test "x$prefix" = xNONE; then
 577    test_prefix=/usr/local
 578   else
 579    test_prefix=$prefix
 580   fi
 581  else
 582   test_prefix=$exec_prefix
 583  fi
 584  case ${TARGET_SYSTEM_ROOT} in
 585  "${test_prefix}"|"${test_prefix}/"*|\
 586  '${exec_prefix}'|'${exec_prefix}/'*)
 587    t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE"
 588    TARGET_SYSTEM_ROOT_DEFINE="$t"
 589    ;;
 590  esac
 591 ], [
 592  TARGET_SYSTEM_ROOT=
 593  TARGET_SYSTEM_ROOT_DEFINE=
 594  CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include'
 595 ])
 596 AC_SUBST(TARGET_SYSTEM_ROOT)
 597 AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
 598 AC_SUBST(CROSS_SYSTEM_HEADER_DIR)
 599
 600 # -------------------------
 601 # Checks for other programs
 602 # -------------------------
 603
 604 AC_PROG_MAKE_SET
 605
 606 # Find some useful tools
 607 AC_PROG_AWK
 608 gcc_AC_PROG_LN
 609 gcc_AC_PROG_LN_S
 610 AC_PROG_RANLIB
 611 gcc_AC_PROG_INSTALL
 612
 613 # See if we have the mktemp command.
 614 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 615
 616 # Do we have a single-tree copy of texinfo?
 617 if test -f $srcdir/../texinfo/Makefile.in; then
 618   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 619   gcc_cv_prog_makeinfo_modern=yes
 620   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 621 else
 622   # See if makeinfo has been installed and is modern enough
 623   # that we can use it.
 624   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 625   [GNU texinfo.* \([0-9][0-9.]*\)],
 626   [4.[2-9]*])
 627 fi
 628
 629 if test $gcc_cv_prog_makeinfo_modern = no; then
 630   AC_MSG_WARN([
 631 *** Makeinfo is missing or too old.
 632 *** Info documentation will not be built.])
 633   BUILD_INFO=
 634 else
 635   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 636 fi
 637
 638 # Is pod2man recent enough to regenerate manpages?
 639 AC_MSG_CHECKING([for recent Pod::Man])
 640 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
 641   AC_MSG_RESULT(yes)
 642   GENERATED_MANPAGES=generated-manpages         AC_SUBST(GENERATED_MANPAGES)
 643 else
 644   AC_MSG_RESULT(no)
 645   GENERATED_MANPAGES=
 646 fi
 647
 648 # How about lex?
 649 dnl Don't use AC_PROG_LEX; we insist on flex.
 650 dnl LEXLIB is not useful in gcc.
 651 if test -f $srcdir/../flex/skel.c; then
 652   FLEX='$(objdir)/../flex/flex'
 653 else
 654   AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex)
 655 fi
 656
 657 # Bison?
 658 # The -L switch is so bison can find its skeleton file.
 659 if test -f $srcdir/../bison/bison.simple; then
 660   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 661 else
 662   AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
 663 fi
 664
 665 # --------------------
 666 # Checks for C headers
 667 # --------------------
 668
 669 AC_MSG_CHECKING(for GNU C library)
 670 AC_CACHE_VAL(gcc_cv_glibc,
 671 [AC_TRY_COMPILE(
 672   [#include <features.h>],[
 673 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 674 #error Not a GNU C library system
 675 #endif],
 676   [gcc_cv_glibc=yes],
 677   gcc_cv_glibc=no)])
 678 AC_MSG_RESULT($gcc_cv_glibc)
 679 if test $gcc_cv_glibc = yes; then
 680   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 681 fi
 682
 683 AC_HEADER_STDC
 684 AC_HEADER_TIME
 685 gcc_AC_HEADER_STDBOOL
 686 gcc_AC_HEADER_STRING
 687 AC_HEADER_SYS_WAIT
 688 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 689                  fcntl.h unistd.h sys/file.h sys/time.h \
 690                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 691                  direct.h malloc.h langinfo.h ldfcn.h)
 692
 693 # Check for thread headers.
 694 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 695 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 696
 697 # These tests can't be done till we know if we have limits.h.
 698 gcc_AC_C_CHAR_BIT
 699 AC_C_BIGENDIAN_CROSS
 700 gcc_AC_C_FLOAT_FORMAT
 701
 702 # --------
 703 # UNSORTED
 704 # --------
 705
 706 # Stage specific cflags for build.
 707 stage1_cflags=
 708 case $build in
 709 vax-*-*)
 710   if test x$GCC = xyes
 711   then
 712     stage1_cflags="-Wa,-J"
 713   else
 714     stage1_cflags="-J"
 715   fi
 716   ;;
 717 powerpc-*-darwin*)
 718   # The spiffy cpp-precomp chokes on some legitimate constructs in GCC
 719   # sources; use -no-cpp-precomp to get to GNU cpp.
 720   # Apple's GCC has bugs in designated initializer handling, so disable
 721   # that too.
 722   stage1_cflags="-no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0"
 723   ;;
 724 esac
 725 AC_SUBST(stage1_cflags)
 726
 727 # These libraries may be used by collect2.
 728 # We may need a special search path to get them linked.
 729 AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs,
 730 [save_LIBS="$LIBS"
 731 for libs in '' -lld -lmld \
 732                 '-L/usr/lib/cmplrs/cc2.11 -lmld' \
 733                 '-L/usr/lib/cmplrs/cc3.11 -lmld'
 734 do
 735         LIBS="$libs"
 736         AC_TRY_LINK_FUNC(ldopen,
 737                 [gcc_cv_collect2_libs="$libs"; break])
 738 done
 739 LIBS="$save_LIBS"
 740 test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required'])
 741 case $gcc_cv_collect2_libs in
 742         "none required")        ;;
 743         *)      COLLECT2_LIBS=$gcc_cv_collect2_libs ;;
 744 esac
 745 AC_SUBST(COLLECT2_LIBS)
 746
 747 # When building Ada code on Alpha, we need exc_resume which is usually in
 748 # -lexc.  So test for it.
 749 save_LIBS="$LIBS"
 750 LIBS=
 751 AC_SEARCH_LIBS(exc_resume, exc)
 752 GNAT_LIBEXC="$LIBS"
 753 LIBS="$save_LIBS"
 754 AC_SUBST(GNAT_LIBEXC)
 755
 756 # See if the stage1 system preprocessor understands the ANSI C
 757 # preprocessor stringification operator.  (Used by symcat.h.)
 758 AC_C_STRINGIZE
 759
 760 # Use <inttypes.h> only if it exists,
 761 # doesn't clash with <sys/types.h>, and declares intmax_t.
 762 AC_MSG_CHECKING(for inttypes.h)
 763 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 764 [AC_TRY_COMPILE(
 765   [#include <sys/types.h>
 766 #include <inttypes.h>],
 767   [intmax_t i = -1;],
 768   [gcc_cv_header_inttypes_h=yes],
 769   gcc_cv_header_inttypes_h=no)])
 770 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 771 if test $gcc_cv_header_inttypes_h = yes; then
 772   AC_DEFINE(HAVE_INTTYPES_H, 1,
 773         [Define if you have a working <inttypes.h> header file.])
 774 fi
 775
 776 dnl Disabled until we have a complete test for buggy enum bitfields.
 777 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 778
 779 AC_CHECK_FUNCS(times clock dup2 kill getrlimit setrlimit atoll atoq \
 780         sysconf strsignal putc_unlocked fputc_unlocked fputs_unlocked \
 781         fwrite_unlocked fprintf_unlocked getrusage nl_langinfo lstat \
 782         scandir alphasort)
 783
 784 AC_CHECK_TYPE(ssize_t, int)
 785
 786 # Try to determine the array type of the second argument of getgroups
 787 # for the target system (int or gid_t).
 788 AC_TYPE_GETGROUPS
 789 if test "${target}" = "${build}"; then
 790   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 791 else
 792   case "${target}" in
 793         # This condition may need some tweaking.  It should include all
 794         # targets where the array type of the second argument of getgroups
 795         # is int and the type of gid_t is not equivalent to int.
 796         *-*-sunos* | *-*-ultrix*)
 797                 TARGET_GETGROUPS_T=int
 798                 ;;
 799         *)
 800                 TARGET_GETGROUPS_T=gid_t
 801                 ;;
 802   esac
 803 fi
 804 AC_SUBST(TARGET_GETGROUPS_T)
 805
 806 gcc_AC_FUNC_PRINTF_PTR
 807
 808 case "${host}" in
 809 *-*-uwin*)
 810   AC_MSG_ERROR([
 811 *** UWIN may not be used as a host platform because
 812 *** linking with posix.dll is not allowed by the GNU GPL])
 813   ;;
 814 *-*-*vms*)
 815   # Under VMS, vfork works very different than on Unix. The standard test
 816   # won't work, and it isn't easily adaptable. It makes more sense to
 817   # just force it.
 818   ac_cv_func_vfork_works=yes
 819   ;;
 820 esac
 821 AC_FUNC_VFORK
 822 AC_FUNC_MMAP_ANYWHERE
 823 AC_FUNC_MMAP_FILE
 824
 825 AM_ICONV
 826
 827 # We will need to find libiberty.h and ansidecl.h
 828 saved_CFLAGS="$CFLAGS"
 829 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 830 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
 831         strsignal putc_unlocked fputs_unlocked fwrite_unlocked \
 832         fprintf_unlocked strstr errno vasprintf \
 833         malloc realloc calloc free basename getopt clock, , ,[
 834 #include "ansidecl.h"
 835 #include "system.h"])
 836
 837 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 838 #include "ansidecl.h"
 839 #include "system.h"
 840 #ifdef HAVE_SYS_RESOURCE_H
 841 #include <sys/resource.h>
 842 #endif
 843 ])
 844
 845 AC_TRY_COMPILE([
 846 #include "ansidecl.h"
 847 #include "system.h"
 848 #ifdef HAVE_SYS_RESOURCE_H
 849 #include <sys/resource.h>
 850 #endif
 851 ],[rlim_t l = 0;],,[AC_DEFINE([rlim_t],[long],
 852 [Define to \`long' if <sys/resource.h> doesn't define.])])
 853
 854 gcc_AC_CHECK_DECLS(ldgetname, , ,[
 855 #include "ansidecl.h"
 856 #include "system.h"
 857 #ifdef HAVE_LDFCN_H
 858 #include <ldfcn.h>
 859 #endif
 860 ])
 861
 862 gcc_AC_CHECK_DECLS(times, , ,[
 863 #include "ansidecl.h"
 864 #include "system.h"
 865 #ifdef HAVE_SYS_TIMES_H
 866 #include <sys/times.h>
 867 #endif
 868 ])
 869
 870 # More time-related stuff.
 871 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
 872 AC_TRY_COMPILE([
 873 #include "ansidecl.h"
 874 #include "system.h"
 875 #ifdef HAVE_SYS_TIMES_H
 876 #include <sys/times.h>
 877 #endif
 878 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
 879 if test $ac_cv_struct_tms = yes; then
 880   AC_DEFINE(HAVE_STRUCT_TMS, 1,
 881   [Define if <sys/times.h> defines struct tms.])
 882 fi
 883
 884 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
 885 # revisit after autoconf 2.50.
 886 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
 887 AC_TRY_COMPILE([
 888 #include "ansidecl.h"
 889 #include "system.h"
 890 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
 891 if test $gcc_cv_type_clock_t = yes; then
 892   AC_DEFINE(HAVE_CLOCK_T, 1,
 893   [Define if <time.h> defines clock_t.])
 894 fi
 895
 896 AC_CACHE_CHECK(for uchar, gcc_cv_type_uchar,
 897 [AC_TRY_COMPILE([
 898 #include "ansidecl.h"
 899 #include "system.h"
 900 ],
 901 [if ((uchar *)0) return 0;
 902  if (sizeof(uchar)) return 0;],
 903 ac_cv_type_uchar=yes, ac_cv_type_uchar=no)])
 904 if test $ac_cv_type_uchar = yes; then
 905   AC_DEFINE(HAVE_UCHAR, 1,
 906   [Define if <sys/types.h> defines \`uchar'.])
 907 fi
 908
 909 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 910 CFLAGS="$saved_CFLAGS"
 911
 912 gcc_AC_INITFINI_ARRAY
 913
 914 # mkdir takes a single argument on some systems.
 915 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 916
 917 # File extensions
 918 manext='.1'
 919 objext='.o'
 920 AC_SUBST(manext)
 921 AC_SUBST(objext)
 922
 923 # With Setjmp/Longjmp based exception handling.
 924 AC_ARG_ENABLE(sjlj-exceptions,
 925 [  --enable-sjlj-exceptions
 926                           arrange to use setjmp/longjmp exception handling],
 927 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
 928 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
 929   [Define 0/1 to force the choice for exception handling model.])])
 930
 931 AC_CHECK_LIB(unwind, main, use_libunwind_default=yes, use_libunwind_default=no)
 932 # Use libunwind based exception handling.
 933 AC_ARG_ENABLE(libunwind-exceptions,
 934 [  --enable-libunwind-exceptions  force use libunwind for exceptions],
 935 use_libunwind_exceptions=$enableval,
 936 use_libunwind_exceptions=$use_libunwind_default)
 937 if test x"$use_libunwind_exceptions" = xyes; then
 938    AC_DEFINE(USE_LIBUNWIND_EXCEPTIONS, 1,
 939         [Define if gcc should use -lunwind.])
 940 fi
 941
 942 # --------------------------------------------------------
 943 # Build, host, and target specific configuration fragments
 944 # --------------------------------------------------------
 945
 946 target_gtfiles=
 947 build_xm_file=
 948 build_xm_defines=
 949 build_install_headers_dir=install-headers-tar
 950 build_exeext=
 951 host_xm_file=
 952 host_xm_defines=
 953 host_xmake_file=
 954 host_truncate_target=
 955 host_exeext=
 956
 957 # Decode the host machine, then the target machine.
 958 # For the host machine, we save the xm_file variable as host_xm_file;
 959 # then we decode the target machine and forget everything else
 960 # that came from the host machine.
 961 for machine in $build $host $target; do
 962         . ${srcdir}/config.gcc
 963 done
 964
 965 extra_objs="${host_extra_objs} ${extra_objs}"
 966
 967 # Default the target-machine variables that were not explicitly set.
 968 if test x"$tm_file" = x
 969 then tm_file=$cpu_type/$cpu_type.h; fi
 970
 971 if test x"$extra_headers" = x
 972 then extra_headers=; fi
 973
 974 if test x$md_file = x
 975 then md_file=$cpu_type/$cpu_type.md; fi
 976
 977 if test x$out_file = x
 978 then out_file=$cpu_type/$cpu_type.c; fi
 979
 980 if test x"$tmake_file" = x
 981 then tmake_file=$cpu_type/t-$cpu_type
 982 fi
 983
 984 if test x"$dwarf2" = xyes
 985 then tm_file="$tm_file tm-dwarf2.h"
 986 fi
 987
 988 # Say what files are being used for the output code and MD file.
 989 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
 990 echo "Using \`$srcdir/config/$md_file' as machine description file."
 991
 992 # If any of the xm_file variables contain nonexistent files, warn
 993 # about them and drop them.
 994
 995 bx=
 996 for x in $build_xm_file; do
 997   if    test -f $srcdir/config/$x
 998   then      bx="$bx $x"
 999   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1000   fi
1001 done
1002 build_xm_file="$bx"
1003
1004 hx=
1005 for x in $host_xm_file; do
1006   if    test -f $srcdir/config/$x
1007   then      hx="$hx $x"
1008   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1009   fi
1010 done
1011 host_xm_file="$hx"
1012
1013 tx=
1014 for x in $xm_file; do
1015   if    test -f $srcdir/config/$x
1016   then      tx="$tx $x"
1017   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
1018   fi
1019 done
1020 xm_file="$tx"
1021
1022 count=a
1023 for f in $tm_file; do
1024         count=${count}x
1025 done
1026 if test $count = ax; then
1027         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
1028 else
1029         echo "Using the following target machine macro files:"
1030         for f in $tm_file; do
1031                 echo "  $srcdir/config/$f"
1032         done
1033 fi
1034
1035 if test x$need_64bit_hwint = xyes; then
1036         AC_DEFINE(NEED_64BIT_HOST_WIDE_INT, 1,
1037 [Define to 1 if HOST_WIDE_INT must be 64 bits wide (see hwint.h).])
1038 fi
1039
1040 count=a
1041 for f in $host_xm_file; do
1042         count=${count}x
1043 done
1044 if test $count = a; then
1045         :
1046 elif test $count = ax; then
1047         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
1048 else
1049         echo "Using the following host machine macro files:"
1050         for f in $host_xm_file; do
1051                 echo "  $srcdir/config/$f"
1052         done
1053 fi
1054 echo "Using ${out_host_hook_obj} for host machine hooks."
1055
1056 if test "$host_xm_file" != "$build_xm_file"; then
1057         count=a
1058         for f in $build_xm_file; do
1059                 count=${count}x
1060         done
1061         if test $count = a; then
1062                 :
1063         elif test $count = ax; then
1064                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
1065         else
1066                 echo "Using the following build machine macro files:"
1067                 for f in $build_xm_file; do
1068                         echo "  $srcdir/config/$f"
1069                 done
1070         fi
1071 fi
1072
1073 if test x$thread_file = x; then
1074         if test x$target_thread_file != x; then
1075                 thread_file=$target_thread_file
1076         else
1077                 thread_file='single'
1078         fi
1079 fi
1080
1081 # Look for a file containing extra machine modes.
1082 if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then
1083   extra_modes_file='$(srcdir)'/config/${extra_modes}
1084   AC_SUBST(extra_modes_file)
1085   AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "$extra_modes",
1086   [Define to the name of a file containing a list of extra machine modes
1087    for this architecture.])
1088   AC_DEFINE(EXTRA_CC_MODES, 1,
1089   [Define if the target architecture needs extra machine modes to represent
1090    the results of comparisons.])
1091 fi
1092
1093 # auto-host.h is the file containing items generated by autoconf and is
1094 # the first file included by config.h.
1095 # If host=build, it is correct to have bconfig include auto-host.h
1096 # as well.  If host!=build, we are in error and need to do more
1097 # work to find out the build config parameters.
1098 if test x$host = x$build
1099 then
1100         build_auto=auto-host.h
1101         FORBUILD=..
1102 else
1103         # We create a subdir, then run autoconf in the subdir.
1104         # To prevent recursion we set host and build for the new
1105         # invocation of configure to the build for this invocation
1106         # of configure.
1107         tempdir=build.$$
1108         rm -rf $tempdir
1109         mkdir $tempdir
1110         cd $tempdir
1111         case ${srcdir} in
1112         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
1113         *) realsrcdir=../${srcdir};;
1114         esac
1115         saved_CFLAGS="${CFLAGS}"
1116         CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \
1117         ${realsrcdir}/configure \
1118                 --target=$target_alias --host=$build_alias --build=$build_alias
1119         CFLAGS="${saved_CFLAGS}"
1120
1121         # We just finished tests for the build machine, so rename
1122         # the file auto-build.h in the gcc directory.
1123         mv auto-host.h ../auto-build.h
1124         cd ..
1125         rm -rf $tempdir
1126         build_auto=auto-build.h
1127         FORBUILD=../build-$build_alias
1128 fi
1129 AC_SUBST(FORBUILD)
1130
1131 tm_file="${tm_file} defaults.h"
1132 tm_p_file="${tm_p_file} tm-preds.h"
1133 host_xm_file="auto-host.h ansidecl.h ${host_xm_file}"
1134 build_xm_file="${build_auto} ansidecl.h ${build_xm_file}"
1135 # We don't want ansidecl.h in target files, write code there in ISO/GNU C.
1136 # put this back in temporarily.
1137 xm_file="ansidecl.h ${xm_file}"
1138
1139 # --------
1140 # UNSORTED
1141 # --------
1142
1143 # Truncate the target if necessary
1144 if test x$host_truncate_target != x; then
1145         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
1146 fi
1147
1148 # Get the version trigger filename from the toplevel
1149 if test "${with_gcc_version_trigger+set}" = set; then
1150         gcc_version_trigger=$with_gcc_version_trigger
1151 else
1152         gcc_version_trigger=${srcdir}/version.c
1153 fi
1154 changequote(,)dnl
1155 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*"\([^"]*\)".*/\1/'`
1156 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1157
1158 # Compile in configure arguments.
1159 if test -f configargs.h ; then
1160         # Being re-configured.
1161         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'`
1162         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
1163 else
1164         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
1165 fi
1166 cat > configargs.h <<EOF
1167 /* Generated automatically. */
1168 static const char configuration_arguments[] = "$gcc_config_arguments";
1169 static const char thread_model[] = "$thread_file";
1170 EOF
1171 changequote([,])dnl
1172
1173 # Internationalization
1174 PACKAGE=gcc
1175 VERSION="$gcc_version"
1176 AC_SUBST(PACKAGE)
1177 AC_SUBST(VERSION)
1178
1179 # Enable NLS support by default
1180 AC_ARG_ENABLE(nls,
1181   [  --enable-nls            use Native Language Support (default)],
1182   , enable_nls=yes)
1183
1184 # if cross compiling, disable NLS support.
1185 # It's not worth the trouble, at least for now.
1186
1187 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
1188   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
1189   enable_nls=no
1190 fi
1191
1192 AM_GNU_GETTEXT
1193
1194 # Windows32 Registry support for specifying GCC installation paths.
1195 AC_ARG_ENABLE(win32-registry,
1196 [  --disable-win32-registry
1197                           disable lookup of installation paths in the
1198                           Registry on Windows hosts
1199   --enable-win32-registry enable registry lookup (default)
1200   --enable-win32-registry=KEY
1201                           use KEY instead of GCC version as the last portion
1202                           of the registry key],,)
1203 case $host_os in
1204         win32 | pe | cygwin* | mingw32* | uwin*)
1205 AC_MSG_CHECKING(whether windows registry support is requested)
1206 if test "x$enable_win32_registry" != xno; then
1207   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
1208 [Define to 1 if installation paths should be looked up in Windows32
1209    Registry. Ignored on non windows32 hosts.])
1210   AC_MSG_RESULT(yes)
1211   AC_SEARCH_LIBS(RegOpenKeyExA, advapi32)
1212 else
1213   AC_MSG_RESULT(no)
1214 fi
1215
1216 # Check if user specified a different registry key.
1217 case "x${enable_win32_registry}" in
1218 x | xyes)
1219   # default.
1220   gcc_cv_win32_registry_key="$VERSION"
1221   ;;
1222 xno)
1223   # no registry lookup.
1224   gcc_cv_win32_registry_key=''
1225   ;;
1226 *)
1227   # user-specified key.
1228   gcc_cv_win32_registry_key="$enable_win32_registry"
1229   ;;
1230 esac
1231
1232 if test "x$enable_win32_registry" != xno; then
1233   AC_MSG_CHECKING(registry key on windows hosts)
1234   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
1235         [Define to be the last portion of registry key on windows hosts.])
1236   AC_MSG_RESULT($gcc_cv_win32_registry_key)
1237 fi
1238 ;;
1239 esac
1240
1241 # Get an absolute path to the GCC top-level source directory
1242 holddir=`${PWDCMD-pwd}`
1243 cd $srcdir
1244 topdir=`${PWDCMD-pwd}`
1245 cd $holddir
1246
1247 # Conditionalize the makefile for this host machine.
1248 # Make-host contains the concatenation of all host makefile fragments
1249 # [there can be more than one].  This file is built by configure.frag.
1250 host_overrides=Make-host
1251 dep_host_xmake_file=
1252 for f in .. ${host_xmake_file}
1253 do
1254         if test -f ${srcdir}/config/$f
1255         then
1256                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
1257         fi
1258 done
1259
1260 # Conditionalize the makefile for this target machine.
1261 # Make-target contains the concatenation of all host makefile fragments
1262 # [there can be more than one].  This file is built by configure.frag.
1263 target_overrides=Make-target
1264 dep_tmake_file=
1265 for f in .. ${tmake_file}
1266 do
1267         if test -f ${srcdir}/config/$f
1268         then
1269                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
1270         fi
1271 done
1272
1273 symbolic_link='ln -s'
1274
1275 # If the host doesn't support symlinks, modify CC in
1276 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
1277 # Otherwise, we can use "CC=$(CC)".
1278 rm -f symtest.tem
1279 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
1280 then
1281         cc_set_by_configure="\$(CC)"
1282         quoted_cc_set_by_configure="\$(CC)"
1283         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1284         quoted_stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
1285 else
1286         rm -f symtest.tem
1287         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
1288         then
1289                 symbolic_link="cp -p"
1290         else
1291                 symbolic_link="cp"
1292         fi
1293         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
1294         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
1295         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
1296         quoted_stage_prefix_set_by_configure="\\\`case '\\\$(STAGE_PREFIX)' in stage*) echo '\\\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(STAGE_PREFIX)';; esac\\\`"
1297 fi
1298 rm -f symtest.tem
1299
1300 out_object_file=`basename $out_file .c`.o
1301
1302 tm_file_list=
1303 for f in $tm_file; do
1304   case $f in
1305     ansidecl.h )
1306        tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1307     defaults.h )
1308        tm_file_list="${tm_file_list} \$(srcdir)/$f" ;;
1309     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1310   esac
1311 done
1312
1313 tm_p_file_list=
1314 for f in $tm_p_file; do
1315   case $f in
1316     tm-preds.h )
1317        tm_p_file_list="${tm_p_file_list} $f" ;;
1318     *) tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f" ;;
1319   esac
1320 done
1321
1322 host_xm_file_list=
1323 for f in $host_xm_file; do
1324   case $f in
1325     ansidecl.h )
1326        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1327     auto-host.h )
1328        host_xm_file_list="${host_xm_file_list} $f" ;;
1329     defaults.h )
1330        host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1331     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1332   esac
1333 done
1334
1335 build_xm_file_list=
1336 for f in $build_xm_file; do
1337   case $f in
1338     ansidecl.h )
1339        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1340     auto-build.h | auto-host.h )
1341        build_xm_file_list="${build_xm_file_list} $f" ;;
1342     defaults.h )
1343        host_xm_file_list="${host_xm_file_list} \$(srcdir)/$f" ;;
1344     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1345   esac
1346 done
1347
1348 # Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
1349 # Also use all.cross instead of all.internal and adjust SYSTEM_HEADER_DIR.
1350 CROSS=                                          AC_SUBST(CROSS)
1351 ALL=all.internal                                AC_SUBST(ALL)
1352 SYSTEM_HEADER_DIR='$(NATIVE_SYSTEM_HEADER_DIR)' AC_SUBST(SYSTEM_HEADER_DIR)
1353 if test x$host != x$target
1354 then
1355         CROSS="-DCROSS_COMPILE"
1356         ALL=all.cross
1357         SYSTEM_HEADER_DIR='$(CROSS_SYSTEM_HEADER_DIR)'
1358         case "$host","$target" in
1359             i?86-*-*,x86_64-*-* \
1360             | powerpc*-*-*,powerpc64*-*-*)
1361                 CROSS="$CROSS -DNATIVE_CROSS" ;;
1362         esac
1363 fi
1364
1365 # If this is a cross-compiler that does not
1366 # have its own set of headers then define
1367 # inhibit_libc
1368
1369 # If this is using newlib, then define inhibit_libc in LIBGCC2_CFLAGS.
1370 # This prevents libgcc2 from containing any code which requires libc
1371 # support.
1372 inhibit_libc=
1373 if { test x$host != x$target && test "x$with_headers" = x &&
1374      test "x$with_sysroot" = x ; } || test x$with_newlib = xyes ; then
1375        inhibit_libc=-Dinhibit_libc
1376 fi
1377 AC_SUBST(inhibit_libc)
1378
1379 # When building gcc with a cross-compiler, we need to adjust things so
1380 # that the generator programs are still built with the native compiler.
1381 # Also, we cannot run fixincludes or fix-header.
1382
1383 # These are the normal (build=host) settings:
1384 BUILD_PREFIX=                   AC_SUBST(BUILD_PREFIX)
1385 BUILD_PREFIX_1=ignore-          AC_SUBST(BUILD_PREFIX_1)
1386 BUILD_CC='$(CC)'                AC_SUBST(BUILD_CC)
1387 BUILD_CFLAGS='$(ALL_CFLAGS)'    AC_SUBST(BUILD_CFLAGS)
1388
1389 STMP_FIXINC=stmp-fixinc         AC_SUBST(STMP_FIXINC)
1390 STMP_FIXPROTO=stmp-fixproto     AC_SUBST(STMP_FIXPROTO)
1391
1392 # And these apply if build != host.
1393 if test x$build != x$host
1394 then
1395     BUILD_PREFIX=build-
1396     BUILD_PREFIX_1=build-
1397     BUILD_CC='$(CC_FOR_BUILD)'
1398     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD) $(XCFLAGS)'
1399
1400     STMP_FIXINC=
1401     STMP_FIXPROTO=
1402 fi
1403
1404 # Expand extra_headers to include complete path.
1405 # This substitutes for lots of t-* files.
1406 extra_headers_list=
1407 if test "x$extra_headers" = x
1408 then true
1409 else
1410         # Prepend ${srcdir}/config/${cpu_type}/ to every entry in extra_headers.
1411         for file in $extra_headers;
1412         do
1413                 extra_headers_list="${extra_headers_list} \$(srcdir)/config/${cpu_type}/${file}"
1414         done
1415 fi
1416
1417 # Add a definition of USE_COLLECT2 if system wants one.
1418 case $use_collect2 in
1419   no) use_collect2= ;;
1420   "") ;;
1421   *)
1422     host_xm_defines="${host_xm_defines} USE_COLLECT2"
1423     xm_defines="${xm_defines} USE_COLLECT2"
1424     ;;
1425 esac
1426
1427 # If we have gas in the build tree, make a link to it.
1428 if test -f ../gas/Makefile; then
1429         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1430 fi
1431
1432 # If we have nm and objdump in the build tree, make a link to them.
1433 if test -f ../binutils/Makefile; then
1434         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1435         rm -f objdump; $symbolic_link ../binutils/objdump$host_exeext objdump$host_exeext 2>/dev/null
1436 fi
1437
1438 # If we have ld in the build tree, make a link to it.
1439 if test -f ../ld/Makefile; then
1440         rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1441 fi
1442
1443 # Figure out what assembler we will be using.
1444 AC_MSG_CHECKING(what assembler to use)
1445 in_tree_gas=no
1446 gcc_cv_as=
1447 gcc_cv_gas_major_version=
1448 gcc_cv_gas_minor_version=
1449 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1450 if test -x "$DEFAULT_ASSEMBLER"; then
1451         gcc_cv_as="$DEFAULT_ASSEMBLER"
1452 elif test -x "$AS"; then
1453         gcc_cv_as="$AS"
1454 elif test -x as$host_exeext; then
1455         # Build using assembler in the current directory.
1456         gcc_cv_as=./as$host_exeext
1457 elif test -f $gcc_cv_as_gas_srcdir/configure.in \
1458      && test -f ../gas/Makefile; then
1459   # Single tree build which includes gas.
1460   in_tree_gas=yes
1461   _gcc_COMPUTE_GAS_VERSION
1462 fi
1463
1464 if test "x$gcc_cv_as" = x; then
1465         # Search the same directories that the installed compiler will
1466         # search.  Else we may find the wrong assembler and lose.  If we
1467         # do not find a suitable assembler binary, then try the user's
1468         # path.
1469         #
1470         # Also note we have to check MD_EXEC_PREFIX before checking the
1471         # user's path.  Unfortunately, there is no good way to get at the
1472         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1473         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1474         # to be fixed as part of the make/configure rewrite too.
1475
1476         if test "x$exec_prefix" = xNONE; then
1477                 if test "x$prefix" = xNONE; then
1478                         test_prefix=/usr/local
1479                 else
1480                         test_prefix=$prefix
1481                 fi
1482         else
1483                 test_prefix=$exec_prefix
1484         fi
1485
1486         # If the loop below does not find an assembler, then use whatever
1487         # one we can find in the users's path.
1488         # user's path.
1489         if test "x$program_prefix" != xNONE; then
1490                 gcc_cv_as=${program_prefix}as$host_exeext
1491         else
1492                 gcc_cv_as=`echo as | sed ${program_transform_name}`$host_exeext
1493         fi
1494
1495         test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1496                    $test_prefix/lib/gcc-lib/$target_alias \
1497                    /usr/lib/gcc/$target_alias/$gcc_version \
1498                    /usr/lib/gcc/$target_alias \
1499                    $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1500                    $test_prefix/$target_alias/bin"
1501
1502         if test x$host = x$target; then
1503             test_dirs="$test_dirs \
1504                    /usr/libexec \
1505                    /usr/ccs/gcc \
1506                    /usr/ccs/bin \
1507                    /udk/usr/ccs/bin \
1508                    /bsd43/usr/lib/cmplrs/cc \
1509                    /usr/cross64/usr/bin \
1510                    /usr/lib/cmplrs/cc \
1511                    /sysv/usr/lib/cmplrs/cc \
1512                    /svr4/usr/lib/cmplrs/cc \
1513                    /usr/bin"
1514         fi
1515
1516         for dir in $test_dirs; do
1517                 if test -x $dir/as$host_exeext; then
1518                         gcc_cv_as=$dir/as$host_exeext
1519                         break;
1520                 fi
1521         done
1522 fi
1523 case $in_tree_gas in
1524   yes)
1525     AC_MSG_RESULT("newly built gas")
1526     ;;
1527   no)
1528     AC_MSG_RESULT($gcc_cv_as)
1529     ;;
1530 esac
1531
1532 # Figure out what linker we will be using.
1533 AC_MSG_CHECKING(what linker to use)
1534 in_tree_ld=no
1535 gcc_cv_ld=
1536 gcc_cv_gld_major_version=
1537 gcc_cv_gld_minor_version=
1538 gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld
1539 gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd
1540 if test -x "$DEFAULT_LINKER"; then
1541         gcc_cv_ld="$DEFAULT_LINKER"
1542 elif test -x "$LD"; then
1543         gcc_cv_ld="$LD"
1544 elif test -x ld$host_exeext; then
1545         # Build using linker in the current directory.
1546         gcc_cv_ld=./ld$host_exeext
1547 elif test -f $gcc_cv_ld_gld_srcdir/configure.in \
1548      && test -f ../ld/Makefile; then
1549         # Single tree build which includes ld.
1550         in_tree_ld=yes
1551         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
1552         do
1553 changequote(,)dnl
1554                 gcc_cv_gld_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1555 changequote([,])dnl
1556                 if test x$gcc_cv_gld_version != x; then
1557                         break
1558                 fi
1559         done
1560 changequote(,)dnl
1561         gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"`
1562         gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1563 changequote([,])dnl
1564 fi
1565
1566 if test "x$gcc_cv_ld" = x; then
1567         # Search the same directories that the installed compiler will
1568         # search.  Else we may find the wrong linker and lose.  If we
1569         # do not find a suitable linker binary, then try the user's
1570         # path.
1571         #
1572         # Also note we have to check MD_EXEC_PREFIX before checking the
1573         # user's path.  Unfortunately, there is no good way to get at the
1574         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1575         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1576         # to be fixed as part of the make/configure rewrite too.
1577
1578         if test "x$exec_prefix" = xNONE; then
1579                 if test "x$prefix" = xNONE; then
1580                         test_prefix=/usr/local
1581                 else
1582                         test_prefix=$prefix
1583                 fi
1584         else
1585                 test_prefix=$exec_prefix
1586         fi
1587
1588         # If the loop below does not find an linker, then use whatever
1589         # one we can find in the users's path.
1590         # user's path.
1591         if test "x$program_prefix" != xNONE; then
1592                 gcc_cv_ld=${program_prefix}ld$host_exeext
1593         else
1594                 gcc_cv_ld=`echo ld | sed ${program_transform_name}`$host_exeext
1595         fi
1596
1597         test_dirs="$test_prefix/lib/gcc-lib/$target_alias/$gcc_version \
1598                    $test_prefix/lib/gcc-lib/$target_alias \
1599                    /usr/lib/gcc/$target_alias/$gcc_version \
1600                    /usr/lib/gcc/$target_alias \
1601                    $test_prefix/$target_alias/bin/$target_alias/$gcc_version \
1602                    $test_prefix/$target_alias/bin"
1603
1604         if test x$host = x$target; then
1605             test_dirs="$test_dirs \
1606                    /usr/libexec \
1607                    /usr/ccs/gcc \
1608                    /usr/ccs/bin \
1609                    /udk/usr/ccs/bin \
1610                    /bsd43/usr/lib/cmplrs/cc \
1611                    /usr/cross64/usr/bin \
1612                    /usr/lib/cmplrs/cc \
1613                    /sysv/usr/lib/cmplrs/cc \
1614                    /svr4/usr/lib/cmplrs/cc \
1615                    /usr/bin"
1616         fi
1617
1618         for dir in $test_dirs; do
1619                 if test -x $dir/ld$host_exeext; then
1620                         gcc_cv_ld=$dir/ld$host_exeext
1621                         break;
1622                 fi
1623         done
1624 fi
1625 case $in_tree_ld in
1626   yes)
1627     AC_MSG_RESULT("newly built ld")
1628     ;;
1629   no)
1630     AC_MSG_RESULT($gcc_cv_ld)
1631     ;;
1632 esac
1633
1634 # Figure out what nm we will be using.
1635 AC_MSG_CHECKING(what nm to use)
1636 if test -x nm$host_exeext; then
1637         gcc_cv_nm=./nm$host_exeext
1638 elif test "x$program_prefix" != xNONE; then
1639         gcc_cv_nm=${program_prefix}nm$host_exeext
1640 else
1641         gcc_cv_nm=`echo nm | sed ${program_transform_name}`$host_exeext
1642 fi
1643 AC_MSG_RESULT($gcc_cv_nm)
1644
1645 # Figure out what objdump we will be using.
1646 AC_MSG_CHECKING(what objdump to use)
1647 if test -x objdump$host_exeext; then
1648         gcc_cv_objdump=./objdump$host_exeext
1649 elif test "x$program_prefix" != xNONE; then
1650         gcc_cv_objdump=${program_prefix}objdump$host_exeext
1651 else
1652         gcc_cv_objdump=`echo objdump | sed ${program_transform_name}`$host_exeext
1653 fi
1654 AC_MSG_RESULT($gcc_cv_objdump)
1655
1656 # Figure out what assembler alignment features are present.
1657 AC_MSG_CHECKING(assembler alignment features)
1658 gcc_cv_as_alignment_features=none
1659 if test $in_tree_gas = yes; then
1660   # Gas version 2.6 and later support for .balign and .p2align.
1661   gcc_GAS_VERSION_GTE_IFELSE(2,6,0,[
1662     gcc_cv_as_alignment_features=".balign and .p2align"
1663     AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1664   ])
1665   # Gas version 2.8 and later support specifying the maximum
1666   # bytes to skip when using .p2align.
1667   gcc_GAS_VERSION_GTE_IFELSE(2,8,0,[
1668     gcc_cv_as_alignment_features=".p2align including maximum skip"
1669     AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1670   ])
1671 elif test x$gcc_cv_as != x; then
1672         # Check if we have .balign and .p2align
1673         echo ".balign  4" > conftest.s
1674         echo ".p2align  2" >> conftest.s
1675         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1676                 gcc_cv_as_alignment_features=".balign and .p2align"
1677                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1678         fi
1679         rm -f conftest.s conftest.o
1680         # Check if specifying the maximum bytes to skip when
1681         # using .p2align is supported.
1682         echo ".p2align 4,,7" > conftest.s
1683         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1684                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1685                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1686         fi
1687         rm -f conftest.s conftest.o
1688 fi
1689 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1690
1691 AC_MSG_CHECKING(assembler subsection support)
1692 gcc_cv_as_subsections=no
1693 if test $in_tree_gas = yes ; then
1694   gcc_GAS_VERSION_GTE_IFELSE(2,9,0,[
1695     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1696       gcc_cv_as_subsections="working .subsection -1"
1697     fi
1698   ])
1699 elif test x$gcc_cv_as != x; then
1700         # Check if we have .subsection
1701         echo ".subsection 1" > conftest.s
1702         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1703                 gcc_cv_as_subsections=".subsection"
1704                 if test x$gcc_cv_nm != x; then
1705                         cat > conftest.s <<EOF
1706 conftest_label1: .word 0
1707 .subsection -1
1708 conftest_label2: .word 0
1709 .previous
1710 EOF
1711                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1712                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1713                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1714                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1715                                         :
1716                                 else
1717                                         gcc_cv_as_subsections="working .subsection -1"
1718                                 fi
1719                         fi
1720                 fi
1721         fi
1722         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1723 fi
1724 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1725         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1726 [Define if your assembler supports .subsection and .subsection -1 starts
1727    emitting at the beginning of your section.])
1728 fi
1729 AC_MSG_RESULT($gcc_cv_as_subsections)
1730
1731 AC_MSG_CHECKING(assembler weak support)
1732 gcc_cv_as_weak=no
1733 if test $in_tree_gas = yes ; then
1734   gcc_GAS_VERSION_GTE_IFELSE(2,2,0,[
1735     gcc_cv_as_weak="yes"
1736   ])
1737 elif test x$gcc_cv_as != x; then
1738         # Check if we have .weak
1739         echo "  .weak foobar" > conftest.s
1740         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1741                 gcc_cv_as_weak="yes"
1742         fi
1743         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1744 fi
1745 if test x"$gcc_cv_as_weak" = xyes; then
1746         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1747 fi
1748 AC_MSG_RESULT($gcc_cv_as_weak)
1749
1750 AC_MSG_CHECKING(assembler hidden support)
1751 gcc_cv_as_hidden=no
1752 if test $in_tree_gas = yes ; then
1753   gcc_GAS_VERSION_GTE_IFELSE(2,12,1,[
1754     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1755       gcc_cv_as_hidden="yes"
1756     fi
1757   ])
1758 elif test x$gcc_cv_as != x; then
1759         # Check if we have .hidden
1760         echo "  .hidden foobar" > conftest.s
1761         echo "foobar:" >> conftest.s
1762         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1763                 gcc_cv_as_hidden="yes"
1764         fi
1765         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1766
1767         # GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN.
1768         # This is irritatingly difficult to feature test for.  Look for
1769         # the date string after the version number.
1770         ld_ver=`$gcc_cv_ld --version 2>/dev/null | head -1`
1771         if echo "$ld_ver" | grep GNU > /dev/null; then
1772 changequote(,)dnl
1773                 ld_vers=`echo $ld_ver | sed -n 's,^.*[  ]\([0-9][0-9]*\.[0-9][0-9]*\(\|\.[0-9][0-9]*\)\)\([     ].*\|\)$,\1,p'`
1774                 ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
1775                 if test 0"$ld_date" -lt 20020404; then
1776                         if test -n "$ld_date"; then
1777                                 # If there was date string, but was earlier than 2002-04-04, fail
1778                                 gcc_cv_as_hidden="no"
1779                         elif test -z "$ld_vers"; then
1780                                 # If there was no date string nor ld version number, something is wrong
1781                                 gcc_cv_as_hidden="no"
1782                         else
1783                                 ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
1784                                 ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
1785                                 ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
1786                                 test -z "$ld_vers_patch" && ld_vers_patch=0
1787                                 if test "$ld_vers_major" -lt 2; then
1788                                         gcc_cv_as_hidden="no"
1789                                 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
1790                                         gcc_cv_as_hidden="no"
1791                                 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 \
1792                                           -a "$ld_vers_patch" -eq 0; then
1793                                         gcc_cv_as_hidden="no"
1794                                 fi
1795                         fi
1796                 fi
1797 changequote([,])dnl
1798         fi
1799 fi
1800 if test x"$gcc_cv_as_hidden" = xyes; then
1801         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1802                 [Define if your assembler supports .hidden.])
1803 fi
1804 AC_MSG_RESULT($gcc_cv_as_hidden)
1805 libgcc_visibility=$gcc_cv_as_hidden
1806 case "$target" in
1807   mips-sgi-irix6*)
1808     if test x"$gnu_ld_flag" = x"no"; then
1809       # Even if using gas with .hidden support, the resulting object files
1810       # cannot be linked with the IRIX 6 O32 linker.  With the N32 and
1811       # N64 linkers, the problem is that the linker refuses to accept
1812       # -call_shared (passed by default to the linker) and -r (used to
1813       # link the object file generated without .hidden directives with
1814       # one that hides symbols), so we also lose.
1815       libgcc_visibility=no
1816     fi
1817     ;;
1818 esac
1819 AC_SUBST(libgcc_visibility)
1820
1821 AC_MSG_CHECKING(assembler leb128 support)
1822 gcc_cv_as_leb128=no
1823 if test $in_tree_gas = yes ; then
1824   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
1825     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1826       gcc_cv_as_leb128="yes"
1827     fi
1828   ])
1829 elif test x$gcc_cv_as != x; then
1830         # Check if we have .[us]leb128, and support symbol arithmetic with it.
1831         cat > conftest.s <<EOF
1832         .data
1833         .uleb128 L2 - L1
1834 L1:
1835         .uleb128 1280
1836         .sleb128 -1010
1837 L2:
1838 EOF
1839         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1840                 gcc_cv_as_leb128="yes"
1841
1842                 # GAS versions before 2.11 do not support uleb128,
1843                 # despite appearing to.
1844                 # ??? There exists an elf-specific test that will crash
1845                 # the assembler.  Perhaps it's better to figure out whether
1846                 # arbitrary sections are supported and try the test.
1847                 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1848                 if echo "$as_ver" | grep GNU > /dev/null; then
1849 changequote(,)dnl
1850                         as_ver=`echo $as_ver | sed -e 's/GNU assembler \([0-9.][0-9.]*\).*/\1/'`
1851                         as_major=`echo $as_ver | sed 's/\..*//'`
1852                         as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1853 changequote([,])dnl
1854                         if test $as_major -eq 2 -a $as_minor -lt 11; then
1855                                 gcc_cv_as_leb128="no"
1856                         fi
1857                 fi
1858         fi
1859         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1860 fi
1861 if test x"$gcc_cv_as_leb128" = xyes; then
1862         AC_DEFINE(HAVE_AS_LEB128, 1,
1863                 [Define if your assembler supports .uleb128.])
1864 fi
1865 AC_MSG_RESULT($gcc_cv_as_leb128)
1866
1867 AC_MSG_CHECKING(assembler eh_frame optimization)
1868 gcc_cv_as_eh_frame=no
1869 if test $in_tree_gas = yes ; then
1870   gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
1871     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1872       gcc_cv_as_eh_frame="yes"
1873     fi
1874   ])
1875 elif test x$gcc_cv_as != x; then
1876         # Check if this is GAS.
1877         as_ver=`$gcc_cv_as --version < /dev/null 2> /dev/null | head -1`
1878         rm -f a.out 2> /dev/null
1879         if echo "$as_ver" | grep GNU > /dev/null; then
1880                 # Versions up to and including 2.11.0 may mis-optimize
1881                 # .eh_frame data.  Try something.
1882                 cat > conftest.s <<EOF
1883         .text
1884 .LFB1:
1885         .4byte  0
1886 .L1:
1887         .4byte  0
1888 .LFE1:
1889         .section        .eh_frame,"aw",@progbits
1890 __FRAME_BEGIN__:
1891         .4byte  .LECIE1-.LSCIE1
1892 .LSCIE1:
1893         .4byte  0x0
1894         .byte   0x1
1895         .ascii "z\0"
1896         .byte   0x1
1897         .byte   0x78
1898         .byte   0x1a
1899         .byte   0x0
1900         .byte   0x4
1901         .4byte  1
1902         .p2align 1
1903 .LECIE1:
1904 .LSFDE1:
1905         .4byte  .LEFDE1-.LASFDE1
1906 .LASFDE1:
1907         .4byte  .LASFDE1-__FRAME_BEGIN__
1908         .4byte  .LFB1
1909         .4byte  .LFE1-.LFB1
1910         .byte   0x4
1911         .4byte  .LFE1-.LFB1
1912         .byte   0x4
1913         .4byte  .L1-.LFB1
1914 .LEFDE1:
1915 EOF
1916                 cat > conftest.lit <<EOF
1917  0000 10000000 00000000 017a0001 781a0004  .........z..x...
1918  0010 01000000 12000000 18000000 00000000  ................
1919  0020 08000000 04080000 0044               .........D
1920 EOF
1921                 cat > conftest.big <<EOF
1922  0000 00000010 00000000 017a0001 781a0004  .........z..x...
1923  0010 00000001 00000012 00000018 00000000  ................
1924  0020 00000008 04000000 0844               .........D
1925 EOF
1926                 # If the assembler didn't choke, and we can objdump,
1927                 # and we got the correct data, then succeed.
1928                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1929                    && $gcc_cv_objdump -s -j .eh_frame conftest.o 2>/dev/null \
1930                       | tail -3 > conftest.got \
1931                    && { cmp conftest.lit conftest.got > /dev/null 2>&1 \
1932                         || cmp conftest.big conftest.got > /dev/null 2>&1; }
1933                 then
1934                         gcc_cv_as_eh_frame="yes"
1935                 else
1936                         gcc_cv_as_eh_frame="bad"
1937                         if $gcc_cv_as -o conftest.o --traditional-format /dev/null; then
1938                                 AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1,
1939         [Define if your assembler mis-optimizes .eh_frame data.])
1940                         fi
1941                 fi
1942         fi
1943         rm -f conftest.*
1944 fi
1945 AC_MSG_RESULT($gcc_cv_as_eh_frame)
1946
1947 AC_MSG_CHECKING(assembler section merging support)
1948 gcc_cv_as_shf_merge=no
1949 if test $in_tree_gas = yes ; then
1950   gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
1951     if grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1952       gcc_cv_as_shf_merge=yes
1953     fi
1954   ])
1955 elif test x$gcc_cv_as != x; then
1956         # Check if we support SHF_MERGE sections
1957         echo '.section .rodata.str, "aMS", @progbits, 1' > conftest.s
1958         if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1; then
1959                 gcc_cv_as_shf_merge=yes
1960         fi
1961         rm -f conftest.s conftest.o
1962 fi
1963 if test x"$gcc_cv_as_shf_merge" = xyes; then
1964         AC_DEFINE(HAVE_GAS_SHF_MERGE, 1,
1965 [Define if your assembler supports marking sections with SHF_MERGE flag.])
1966 fi
1967 AC_MSG_RESULT($gcc_cv_as_shf_merge)
1968
1969 AC_MSG_CHECKING(assembler thread-local storage support)
1970 gcc_cv_as_tls=no
1971 conftest_s=
1972 tls_first_major=
1973 tls_first_minor=
1974 case "$target" in
1975 changequote(,)dnl
1976   alpha*-*-*)
1977     conftest_s='
1978         .section ".tdata","awT",@progbits
1979 foo:    .long   25
1980         .text
1981         ldq     $27,__tls_get_addr($29)         !literal!1
1982         lda     $16,foo($29)                    !tlsgd!1
1983         jsr     $26,($27),__tls_get_addr        !lituse_tlsgd!1
1984         ldq     $27,__tls_get_addr($29)         !literal!2
1985         lda     $16,foo($29)                    !tlsldm!2
1986         jsr     $26,($27),__tls_get_addr        !lituse_tlsldm!2
1987         ldq     $1,foo($29)                     !gotdtprel
1988         ldah    $2,foo($29)                     !dtprelhi
1989         lda     $3,foo($2)                      !dtprello
1990         lda     $4,foo($29)                     !dtprel
1991         ldq     $1,foo($29)                     !gottprel
1992         ldah    $2,foo($29)                     !tprelhi
1993         lda     $3,foo($2)                      !tprello
1994         lda     $4,foo($29)                     !tprel'
1995         tls_first_major=2
1996         tls_first_minor=13
1997         ;;
1998   i[34567]86-*-*)
1999 changequote([,])dnl
2000     conftest_s='
2001         .section ".tdata","awT",@progbits
2002 foo:    .long   25
2003         .text
2004         movl    %gs:0, %eax
2005         leal    foo@TLSGD(,%ebx,1), %eax
2006         leal    foo@TLSLDM(%ebx), %eax
2007         leal    foo@DTPOFF(%eax), %edx
2008         movl    foo@GOTTPOFF(%ebx), %eax
2009         subl    foo@GOTTPOFF(%ebx), %eax
2010         addl    foo@GOTNTPOFF(%ebx), %eax
2011         movl    foo@INDNTPOFF, %eax
2012         movl    $foo@TPOFF, %eax
2013         subl    $foo@TPOFF, %eax
2014         leal    foo@NTPOFF(%ecx), %eax'
2015         tls_first_major=2
2016         tls_first_minor=14
2017         ;;
2018   x86_64-*-*)
2019     conftest_s='
2020         .section ".tdata","awT",@progbits
2021 foo:    .long   25
2022         .text
2023         movq    %fs:0, %rax
2024         leaq    foo@TLSGD(%rip), %rdi
2025         leaq    foo@TLSLD(%rip), %rdi
2026         leaq    foo@DTPOFF(%rax), %rdx
2027         movq    foo@GOTTPOFF(%rip), %rax
2028         movq    $foo@TPOFF, %rax'
2029         tls_first_major=2
2030         tls_first_minor=14
2031         ;;
2032   ia64-*-*)
2033     conftest_s='
2034         .section ".tdata","awT",@progbits
2035 foo:    data8   25
2036         .text
2037         addl    r16 = @ltoff(@dtpmod(foo#)), gp
2038         addl    r17 = @ltoff(@dtprel(foo#)), gp
2039         addl    r18 = @ltoff(@tprel(foo#)), gp
2040         addl    r19 = @dtprel(foo#), gp
2041         adds    r21 = @dtprel(foo#), r13
2042         movl    r23 = @dtprel(foo#)
2043         addl    r20 = @tprel(foo#), gp
2044         adds    r22 = @tprel(foo#), r13
2045         movl    r24 = @tprel(foo#)'
2046         tls_first_major=2
2047         tls_first_minor=13
2048         ;;
2049   s390-*-*)
2050     conftest_s='
2051         .section ".tdata","awT",@progbits
2052 foo:    .long   25
2053         .text
2054         .long   foo@TLSGD
2055         .long   foo@TLSLDM
2056         .long   foo@DTPOFF
2057         .long   foo@NTPOFF
2058         .long   foo@GOTNTPOFF
2059         .long   foo@INDNTPOFF
2060         l       %r1,foo@GOTNTPOFF(%r12)
2061         l       %r1,0(%r1):tls_load:foo
2062         bas     %r14,0(%r1,%r13):tls_gdcall:foo
2063         bas     %r14,0(%r1,%r13):tls_ldcall:foo'
2064         tls_first_major=2
2065         tls_first_minor=14
2066         ;;
2067   s390x-*-*)
2068     conftest_s='
2069         .section ".tdata","awT",@progbits
2070 foo:    .long   25
2071         .text
2072         .quad   foo@TLSGD
2073         .quad   foo@TLSLDM
2074         .quad   foo@DTPOFF
2075         .quad   foo@NTPOFF
2076         .quad   foo@GOTNTPOFF
2077         lg      %r1,foo@GOTNTPOFF(%r12)
2078         larl    %r1,foo@INDNTPOFF
2079         brasl   %r14,__tls_get_offset@PLT:tls_gdcall:foo
2080         brasl   %r14,__tls_get_offset@PLT:tls_ldcall:foo'
2081         tls_first_major=2
2082         tls_first_minor=14
2083         ;;
2084 esac
2085 if test -z "$tls_first_major"; then
2086   :
2087 elif test $in_tree_gas = yes ; then
2088   gcc_GAS_VERSION_GTE_IFELSE($tls_first_major,$tls_first_minor,0,[
2089     gcc_cv_as_tls=yes
2090   ])
2091 elif test x$gcc_cv_as != x; then
2092   echo "$conftest_s" > conftest.s
2093   if $gcc_cv_as --fatal-warnings -o conftest.o conftest.s > /dev/null 2>&1
2094   then
2095     gcc_cv_as_tls=yes
2096   fi
2097   rm -f conftest.s conftest.o
2098 fi
2099 if test "$gcc_cv_as_tls" = yes; then
2100   AC_DEFINE(HAVE_AS_TLS, 1,
2101             [Define if your assembler supports thread-local storage.])
2102 fi
2103 AC_MSG_RESULT($gcc_cv_as_tls)
2104
2105 case "$target" in
2106   # All TARGET_ABI_OSF targets.
2107   alpha*-*-osf* | alpha*-*-linux* | alpha*-*-*bsd*)
2108     AC_CACHE_CHECK([assembler supports explicit relocations],
2109         gcc_cv_as_explicit_relocs, [
2110         gcc_cv_as_explicit_relocs=unknown
2111         if test $in_tree_gas = yes ; then
2112            gcc_GAS_VERSION_GTE_IFELSE(2,12,0,[
2113               gcc_cv_as_explicit_relocs=yes
2114            ])
2115         elif test x$gcc_cv_as != x; then
2116             cat > conftest.s << 'EOF'
2117         .set nomacro
2118         .text
2119         extbl   $3, $2, $3      !lituse_bytoff!1
2120         ldq     $2, a($29)      !literal!1
2121         ldq     $4, b($29)      !literal!2
2122         ldq_u   $3, 0($2)       !lituse_base!1
2123         ldq     $27, f($29)     !literal!5
2124         jsr     $26, ($27), f   !lituse_jsr!5
2125         ldah    $29, 0($26)     !gpdisp!3
2126         lda     $0, c($29)      !gprel
2127         ldah    $1, d($29)      !gprelhigh
2128         lda     $1, d($1)       !gprellow
2129         lda     $29, 0($29)     !gpdisp!3
2130 EOF
2131             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2132                 gcc_cv_as_explicit_relocs=yes
2133             else
2134                 gcc_cv_as_explicit_relocs=no
2135             fi
2136             rm -f conftest.s conftest.o
2137         fi
2138     ])
2139     if test "x$gcc_cv_as_explicit_relocs" = xyes; then
2140         AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1,
2141                 [Define if your assembler supports explicit relocations.])
2142     fi
2143     ;;
2144   sparc*-*-*)
2145     AC_CACHE_CHECK([assembler .register pseudo-op support],
2146         gcc_cv_as_register_pseudo_op, [
2147         gcc_cv_as_register_pseudo_op=unknown
2148         if test x$gcc_cv_as != x; then
2149             # Check if we have .register
2150             echo ".register %g2, #scratch" > conftest.s
2151             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2152                 gcc_cv_as_register_pseudo_op=yes
2153             else
2154                 gcc_cv_as_register_pseudo_op=no
2155             fi
2156             rm -f conftest.s conftest.o
2157         fi
2158     ])
2159     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
2160         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
2161                 [Define if your assembler supports .register.])
2162     fi
2163
2164     AC_CACHE_CHECK([assembler supports -relax],
2165         gcc_cv_as_relax_opt, [
2166         gcc_cv_as_relax_opt=unknown
2167         if test x$gcc_cv_as != x; then
2168             # Check if gas supports -relax
2169             echo ".text" > conftest.s
2170             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
2171                 gcc_cv_as_relax_opt=yes
2172             else
2173                 gcc_cv_as_relax_opt=no
2174             fi
2175             rm -f conftest.s conftest.o
2176         fi
2177     ])
2178     if test "x$gcc_cv_as_relax_opt" = xyes; then
2179         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
2180                 [Define if your assembler supports -relax option.])
2181     fi
2182
2183     AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs],
2184         gcc_cv_as_sparc_ua_pcrel, [
2185         gcc_cv_as_sparc_ua_pcrel=unknown
2186         if test x$gcc_cv_as != x -a x$gcc_cv_ld != x; then
2187             gcc_cv_as_sparc_ua_pcrel=no
2188             echo ".text; foo: nop; .data; .align 4; .byte 0; .uaword %r_disp32(foo)" > conftest.s
2189             if $gcc_cv_as -K PIC -o conftest.o conftest.s > /dev/null 2>&1 \
2190                && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then
2191                 gcc_cv_as_sparc_ua_pcrel=yes
2192             fi
2193             rm -f conftest.s conftest.o conftest
2194         fi
2195     ])
2196     if test "x$gcc_cv_as_sparc_ua_pcrel" = xyes; then
2197         AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1,
2198                 [Define if your assembler and linker support unaligned PC relative relocs.])
2199     fi
2200
2201     AC_CACHE_CHECK([assembler and linker support unaligned pc related relocs against hidden symbols],
2202         gcc_cv_as_sparc_ua_pcrel_hidden, [
2203         if test "x$gcc_cv_as_sparc_ua_pcrel" = xyes; then
2204             gcc_cv_as_sparc_ua_pcrel_hidden=unknown
2205             if test x$gcc_cv_objdump != x; then
2206                 gcc_cv_as_sparc_ua_pcrel_hidden=no
2207                 echo ".data; .align 4; .byte 0x31; .uaword %r_disp32(foo)" > conftest.s
2208                 echo ".byte 0x32, 0x33, 0x34; .global foo; .hidden foo" >> conftest.s
2209                 echo "foo: .skip 4" >> conftest.s
2210                 if $gcc_cv_as -K PIC -o conftest.o conftest.s > /dev/null 2>&1 \
2211                    && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \
2212                    && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \
2213                       | grep ' 31000000 07323334' > /dev/null 2>&1; then
2214                     if $gcc_cv_objdump -R conftest 2> /dev/null \
2215                        | grep 'DISP32' > /dev/null 2>&1; then
2216                         :
2217                     else
2218                         gcc_cv_as_sparc_ua_pcrel_hidden=yes
2219                     fi
2220                 fi
2221             fi
2222             rm -f conftest.s conftest.o conftest
2223         else
2224             gcc_cv_as_sparc_ua_pcrel_hidden="$gcc_cv_as_sparc_ua_pcrel"
2225         fi
2226     ])
2227     if test "x$gcc_cv_as_sparc_ua_pcrel_hidden" = xyes; then
2228         AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1,
2229                 [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])
2230     fi
2231
2232     AC_CACHE_CHECK([for assembler offsetable %lo() support],
2233         gcc_cv_as_offsetable_lo10, [
2234         gcc_cv_as_offsetable_lo10=unknown
2235         if test "x$gcc_cv_as" != x; then
2236             # Check if assembler has offsetable %lo()
2237             echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
2238             echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
2239             if $gcc_cv_as -xarch=v9 -o conftest.o conftest.s \
2240                     > /dev/null 2>&1 &&
2241                $gcc_cv_as -xarch=v9 -o conftest1.o conftest1.s \
2242                     > /dev/null 2>&1; then
2243                 if cmp conftest.o conftest1.o > /dev/null 2>&1; then
2244                     gcc_cv_as_offsetable_lo10=no
2245                 else
2246                     gcc_cv_as_offsetable_lo10=yes
2247                 fi
2248             else
2249                 gcc_cv_as_offsetable_lo10=no
2250             fi
2251             rm -f conftest.s conftest.o conftest1.s conftest1.o
2252         fi
2253     ])
2254     if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
2255         AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
2256             [Define if your assembler supports offsetable %lo().])
2257     fi
2258
2259     ;;
2260
2261 changequote(,)dnl
2262   i[34567]86-*-* | x86_64-*-*)
2263 changequote([,])dnl
2264     AC_MSG_CHECKING(assembler instructions)
2265     gcc_cv_as_instructions=
2266     if test $in_tree_gas = yes ; then
2267       gcc_GAS_VERSION_GTE_IFELSE(2,9,0,[
2268         gcc_cv_as_instructions="filds fists"
2269       ])
2270     elif test x$gcc_cv_as != x; then
2271         set "filds fists" "filds mem; fists mem"
2272         while test $# -gt 0
2273         do
2274                 echo "$2" > conftest.s
2275                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2276                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
2277                 fi
2278                 shift 2
2279         done
2280         rm -f conftest.s conftest.o
2281     fi
2282     if test x"$gcc_cv_as_instructions" != x; then
2283         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
2284     fi
2285     AC_MSG_RESULT($gcc_cv_as_instructions)
2286
2287     AC_MSG_CHECKING(assembler GOTOFF in data directives)
2288     gcc_cv_as_gotoff_in_data=no
2289     if test $in_tree_gas = yes ; then
2290       gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2291         gcc_cv_as_gotoff_in_data=yes
2292       ])
2293     elif test x$gcc_cv_as != x; then
2294         cat > conftest.s <<EOF
2295         .text
2296 .L0:
2297         nop
2298         .data
2299         .long .L0@GOTOFF
2300 EOF
2301         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2302           gcc_cv_as_gotoff_in_data=yes
2303         fi
2304     fi
2305     AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA,
2306       [`if test $gcc_cv_as_gotoff_in_data = yes; then echo 1; else echo 0; fi`],
2307       [Define true if the assembler supports '.long foo@GOTOFF'.])
2308     AC_MSG_RESULT($gcc_cv_as_gotoff_in_data)
2309     ;;
2310
2311   ia64*-*-*)
2312     AC_CACHE_CHECK([assembler supports ltoffx and ldxmov],
2313         gcc_cv_as_ltoffx_ldxmov_relocs, [
2314         gcc_cv_as_ltoffx_ldxmov_relocs=unknown
2315         if test $in_tree_gas = yes ; then
2316           gcc_GAS_VERSION_GTE_IFELSE(2,14,0,[
2317             gcc_cv_as_ltoffx_ldxmov_relocs=yes
2318           ])
2319         elif test x$gcc_cv_as != x; then
2320             cat > conftest.s << 'EOF'
2321 changequote(,)dnl
2322         .text
2323         addl r15 = @ltoffx(x#), gp
2324         ;;
2325         ld8.mov r16 = [r15], x#
2326 EOF
2327 changequote([,])dnl
2328             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
2329                 gcc_cv_as_ltoffx_ldxmov_relocs=yes
2330             else
2331                 gcc_cv_as_ltoffx_ldxmov_relocs=no
2332             fi
2333             rm -f conftest.s conftest.o
2334         fi
2335     ])
2336     if test "x$gcc_cv_as_ltoffx_ldxmov_relocs" = xyes; then
2337         AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1,
2338           [Define if your assembler supports ltoffx and ldxmov relocations.])
2339     fi
2340     ;;
2341 esac
2342
2343 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
2344 gcc_cv_as_dwarf2_debug_line=no
2345 # ??? Not all targets support dwarf2 debug_line, even within a version
2346 # of gas.  Moreover, we need to emit a valid instruction to trigger any
2347 # info to the output file.  So, as supported targets are added to gas 2.11,
2348 # add some instruction here to (also) show we expect this might work.
2349 # ??? Once 2.11 is released, probably need to add first known working
2350 # version to the per-target configury.
2351 case "$target" in
2352   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-* | m68*-*-* \
2353   | x86_64*-*-* | hppa*-*-* | arm*-*-* | strongarm*-*-* | xscale*-*-*)
2354     insn="nop"
2355     ;;
2356   ia64*-*-*)
2357     insn="nop 0"
2358     ;;
2359   esac
2360 if test $in_tree_gas = yes ; then
2361   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2362     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2363         && test x"$insn" != x ; then
2364       gcc_cv_as_dwarf2_debug_line="yes"
2365     fi
2366   ])
2367 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2368         echo '  .file 1 "conftest.s"' > conftest.s
2369         echo '  .loc 1 3 0' >> conftest.s
2370         echo "  $insn" >> conftest.s
2371         # ??? This fails with non-gnu grep.
2372         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
2373            && grep debug_line conftest.o > /dev/null 2>&1 ; then
2374                 # The .debug_line file table must be in the exact order that
2375                 # we specified the files, since these indices are also used
2376                 # by DW_AT_decl_file.  Approximate this test by testing if
2377                 # the assembler bitches if the same index is assigned twice.
2378                 echo '  .file 1 "foo.s"' > conftest.s
2379                 echo '  .file 1 "bar.s"' >> conftest.s
2380                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1
2381                 then
2382                   gcc_cv_as_dwarf2_debug_line="no"
2383                 else
2384                   gcc_cv_as_dwarf2_debug_line="yes"
2385                 fi
2386         fi
2387         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
2388 fi
2389 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
2390         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
2391 [Define if your assembler supports dwarf2 .file/.loc directives,
2392    and preserves file table indices exactly as given.])
2393 fi
2394 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
2395
2396 AC_MSG_CHECKING(assembler --gdwarf2 support)
2397 gcc_cv_as_gdwarf2_flag=no
2398 if test $in_tree_gas = yes ; then
2399   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2400     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2401         && test x"$insn" != x ; then
2402       gcc_cv_as_gdwarf2_flag="yes"
2403     fi
2404   ])
2405 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2406         echo '' > conftest.s
2407         # ??? This fails with non-gnu grep.
2408         if $gcc_cv_as --gdwarf2 -o conftest.o conftest.s > /dev/null 2>&1
2409           then
2410           gcc_cv_as_gdwarf2_flag="yes"
2411         fi
2412         rm -f conftest.s conftest.o
2413 fi
2414 if test x"$gcc_cv_as_gdwarf2_flag" = xyes; then
2415         AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1,
2416 [Define if your assembler supports the --gdwarf2 option.])
2417 fi
2418 AC_MSG_RESULT($gcc_cv_as_gdwarf2_flag)
2419
2420 AC_MSG_CHECKING(assembler --gstabs support)
2421 gcc_cv_as_gstabs_flag=no
2422 if test $in_tree_gas = yes ; then
2423   gcc_GAS_VERSION_GTE_IFELSE(2,11,0,[
2424     if grep 'obj_format = elf' ../gas/Makefile > /dev/null \
2425         && test x"$insn" != x ; then
2426       gcc_cv_as_gstabs_flag="yes"
2427     fi
2428   ])
2429 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
2430         echo '' > conftest.s
2431         # ??? This fails with non-gnu grep.
2432         if $gcc_cv_as --gstabs -o conftest.o conftest.s > /dev/null 2>&1 ; then
2433           gcc_cv_as_gstabs_flag="yes"
2434         fi
2435         rm -f conftest.s conftest.o
2436 fi
2437 if test x"$gcc_cv_as_gstabs_flag" = xyes; then
2438         AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1,
2439 [Define if your assembler supports the --gstabs option.])
2440 fi
2441 AC_MSG_RESULT($gcc_cv_as_gstabs_flag)
2442
2443 AC_MSG_CHECKING(linker read-only and read-write section mixing)
2444 gcc_cv_ld_ro_rw_mix=unknown
2445 if test $in_tree_ld = yes ; then
2446   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
2447     gcc_cv_ld_ro_rw_mix=read-write
2448   fi
2449 elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then
2450   echo '.section "myfoosect", "a"' > conftest1.s
2451   echo '.section "myfoosect", "aw"' > conftest2.s
2452   echo '.byte 1' >> conftest2.s
2453   echo '.section "myfoosect", "a"' > conftest3.s
2454   echo '.byte 0' >> conftest3.s
2455   if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \
2456      && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \
2457      && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \
2458      && $gcc_cv_ld -shared -o conftest1.so conftest1.o \
2459         conftest2.o conftest3.o; then
2460     gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \
2461                          | grep -A1 myfoosect`
2462     if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then
2463       if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then
2464         gcc_cv_ld_ro_rw_mix=read-only
2465       else
2466         gcc_cv_ld_ro_rw_mix=read-write
2467       fi
2468     fi
2469   fi
2470 changequote(,)dnl
2471   rm -f conftest.* conftest[123].*
2472 changequote([,])dnl
2473 fi
2474 if test x$gcc_cv_ld_ro_rw_mix = xread-write; then
2475         AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1,
2476   [Define if your linker links a mix of read-only
2477    and read-write sections into a read-write section.])
2478 fi
2479 AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
2480
2481 AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support)
2482 gcc_cv_ld_eh_frame_hdr=no
2483 if test $in_tree_ld = yes ; then
2484   if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
2485     gcc_cv_ld_eh_frame_hdr=yes
2486   fi
2487 elif test x$gcc_cv_ld != x; then
2488         # Check if linker supports --eh-frame-hdr option
2489         if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then
2490                 gcc_cv_ld_eh_frame_hdr=yes
2491         fi
2492 fi
2493 if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
2494         AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1,
2495 [Define if your linker supports --eh-frame-hdr option.])
2496 fi
2497 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
2498
2499 # Miscellaneous target-specific checks.
2500 case "$target" in
2501   mips*-*-*)
2502     AC_MSG_CHECKING(whether libgloss uses STARTUP directives consistently)
2503     gcc_cv_mips_libgloss_startup=no
2504     gcc_cv_libgloss_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/libgloss
2505     if test "x$exec_prefix" = xNONE; then
2506       if test "x$prefix" = xNONE; then
2507         test_prefix=/usr/local
2508       else
2509         test_prefix=$prefix
2510       fi
2511     else
2512       test_prefix=$exec_prefix
2513     fi
2514     for f in $gcc_cv_libgloss_srcdir/mips/idt.ld $test_prefix/$target_alias/lib/idt.ld
2515     do
2516       if grep '^STARTUP' $f > /dev/null 2>&1; then
2517         gcc_cv_mips_libgloss_startup=yes
2518         break
2519       fi
2520     done
2521     if test x"$gcc_cv_mips_libgloss_startup" = xyes; then
2522       AC_DEFINE(HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES, 1,
2523         [Define if your MIPS libgloss linker scripts consistently include STARTUP directives.])
2524     fi
2525     AC_MSG_RESULT($gcc_cv_mips_libgloss_startup)
2526     ;;
2527 esac
2528
2529 if test x$with_sysroot = x && test x$host = x$target \
2530    && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" ; then
2531   AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include")
2532 fi
2533
2534 # Figure out what language subdirectories are present.
2535 # Look if the user specified --enable-languages="..."; if not, use
2536 # the environment variable $LANGUAGES if defined. $LANGUAGES might
2537 # go away some day.
2538 # NB:  embedded tabs in this IF block -- do not untabify
2539 if test x"${enable_languages+set}" != xset; then
2540         if test x"${LANGUAGES+set}" = xset; then
2541                 enable_languages="${LANGUAGES}"
2542                 AC_MSG_WARN([setting LANGUAGES is deprecated, use --enable-languages instead])
2543
2544         else
2545                 enable_languages=all
2546         fi
2547 else
2548         if test x"${enable_languages}" = x \
2549         || test x"${enable_languages}" = xyes;
2550         then
2551                 AC_MSG_ERROR([--enable-languages needs at least one language argument])
2552         fi
2553 fi
2554 enable_languages=`echo "${enable_languages}" | sed -e 's/[[     ,]][[   ,]]*/,/g' -e 's/,$//'`
2555
2556 # First scan to see if an enabled language requires some other language.
2557 # We assume that a given config-lang.in will list all the language
2558 # front ends it requires, even if some are required indirectly.
2559 for lang in ${srcdir}/*/config-lang.in ..
2560 do
2561    case $lang in
2562     ..)
2563        ;;
2564     # The odd quoting in the next line works around
2565     # an apparent bug in bash 1.12 on linux.
2566 changequote(,)dnl
2567     ${srcdir}/[*]/config-lang.in)
2568        ;;
2569     *)
2570        lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^      ]*\).*$,\1,p' $lang`
2571        this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^    ]*\).*$,\1,p' $lang`
2572        for other in $this_lang_requires
2573        do
2574           case ,${enable_languages}, in
2575            *,$other,*)
2576               ;;
2577            *,all,*)
2578               ;;
2579            *,$lang_alias,*)
2580               enable_languages="$enable_languages,$other"
2581               ;;
2582           esac
2583        done
2584        ;;
2585 changequote([,])dnl
2586    esac
2587 done
2588
2589 expected_languages=`echo ,${enable_languages}, | sed -e 's:,: :g' -e 's:  *: :g' -e 's:  *: :g' -e 's:^ ::' -e 's: $::'`
2590 found_languages=
2591 subdirs=
2592 for lang in ${srcdir}/*/config-lang.in ..
2593 do
2594         case $lang in
2595         ..) ;;
2596         # The odd quoting in the next line works around
2597         # an apparent bug in bash 1.12 on linux.
2598 changequote(,)dnl
2599         ${srcdir}/[*]/config-lang.in) ;;
2600         *)
2601           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
2602           this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^         ]*\).*$,\1,p' $lang`
2603           build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^     ]*\).*$,\1,p' $lang`
2604           if test "x$lang_alias" = x
2605           then
2606                 echo "$lang doesn't set \$language." 1>&2
2607                 exit 1
2608           fi
2609           case ${build_by_default},${enable_languages}, in
2610           *,$lang_alias,*) add_this_lang=yes ;;
2611           no,*) add_this_lang=no ;;
2612           *,all,*) add_this_lang=yes ;;
2613           *) add_this_lang=no ;;
2614           esac
2615           found_languages="${found_languages} ${lang_alias}"
2616           if test x"${add_this_lang}" = xyes; then
2617                 case $lang in
2618                     ${srcdir}/ada/config-lang.in)
2619                         if test x$have_gnat = xyes ; then
2620                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2621                         fi
2622                         ;;
2623                     *)
2624                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
2625                         ;;
2626                 esac
2627           fi
2628           ;;
2629 changequote([,])dnl
2630         esac
2631 done
2632
2633 missing_languages=
2634 for expected_language in ${expected_languages} ..
2635 do
2636     if test "${expected_language}" != ..; then
2637         missing_language="${expected_language}"
2638         if test "${expected_language}" = "c" \
2639            || test "${expected_language}" = "all"; then
2640                 missing_language=
2641         fi
2642         for found_language in ${found_languages} ..
2643         do
2644             if test "${found_language}" != ..; then
2645                 if test "${expected_language}" = "${found_language}"; then
2646                     missing_language=
2647                 fi
2648             fi
2649         done
2650         if test "x${missing_language}" != x; then
2651            missing_languages="${missing_languages} ${missing_language}"
2652         fi
2653     fi
2654 done
2655
2656 if test "x$missing_languages" != x; then
2657   AC_MSG_ERROR([
2658 The following requested languages were not found:${missing_languages}
2659 The following languages were available: c${found_languages}])
2660 fi
2661
2662 # Make gthr-default.h if we have a thread file.
2663 gthread_flags=
2664 if test $thread_file != single; then
2665     rm -f gthr-default.h
2666     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
2667     gthread_flags=-DHAVE_GTHR_DEFAULT
2668 fi
2669 AC_SUBST(gthread_flags)
2670
2671 # Find out what GC implementation we want, or may, use.
2672 AC_ARG_WITH(gc,
2673 [  --with-gc={simple,page} choose the garbage collection mechanism to use
2674                           with the compiler],
2675 [case "$withval" in
2676   simple | page)
2677     GGC=ggc-$withval
2678     ;;
2679   *)
2680     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
2681     ;;
2682 esac],
2683 [GGC=ggc-page])
2684 AC_SUBST(GGC)
2685 echo "Using $GGC for garbage collection."
2686
2687 # Use the system's zlib library.
2688 zlibdir=-L../zlib
2689 zlibinc="-I\$(srcdir)/../zlib"
2690 AC_ARG_WITH(system-zlib,
2691 [  --with-system-zlib      use installed libz],
2692 zlibdir=
2693 zlibinc=
2694 )
2695 AC_SUBST(zlibdir)
2696 AC_SUBST(zlibinc)
2697
2698 dnl Very limited version of automake's enable-maintainer-mode
2699
2700 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2701   dnl maintainer-mode is disabled by default
2702   AC_ARG_ENABLE(maintainer-mode,
2703 [  --enable-maintainer-mode
2704                           enable make rules and dependencies not useful
2705                           (and sometimes confusing) to the casual installer],
2706       maintainer_mode=$enableval,
2707       maintainer_mode=no)
2708
2709 AC_MSG_RESULT($maintainer_mode)
2710
2711 if test "$maintainer_mode" = "yes"; then
2712   MAINT=''
2713 else
2714   MAINT='#'
2715 fi
2716 AC_SUBST(MAINT)dnl
2717
2718 # Make empty files to contain the specs and options for each language.
2719 # Then add #include lines to for a compiler that has specs and/or options.
2720
2721 lang_specs_files=
2722 lang_options_files=
2723 lang_tree_files=
2724 for subdir in . $subdirs
2725 do
2726         if test -f $srcdir/$subdir/lang-specs.h; then
2727             lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
2728         fi
2729         if test -f $srcdir/$subdir/lang-options.h; then
2730             lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
2731         fi
2732         if test -f $srcdir/$subdir/$subdir-tree.def; then
2733             lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
2734         fi
2735 done
2736
2737 # These (without "all_") are set in each config-lang.in.
2738 # `language' must be a single word so is spelled singularly.
2739 all_languages=
2740 all_boot_languages=
2741 all_compilers=
2742 all_stagestuff=
2743 all_outputs='Makefile intl/Makefile fixinc/Makefile gccbug mklibgcc mkheaders'
2744 # List of language makefile fragments.
2745 all_lang_makefiles=
2746 # Files for gengtype
2747 all_gtfiles="$target_gtfiles"
2748 # Files for gengtype with language
2749 all_gtfiles_files_langs=
2750 all_gtfiles_files_files=
2751
2752 # Add the language fragments.
2753 # Languages are added via two mechanisms.  Some information must be
2754 # recorded in makefile variables, these are defined in config-lang.in.
2755 # We accumulate them and plug them into the main Makefile.
2756 # The other mechanism is a set of hooks for each of the main targets
2757 # like `clean', `install', etc.
2758
2759 language_fragments="Make-lang"
2760 language_hooks="Make-hooks"
2761
2762 for s in .. $subdirs
2763 do
2764         if test $s != ".."
2765         then
2766                 language=
2767                 boot_language=
2768                 compilers=
2769                 stagestuff=
2770                 outputs=
2771                 gtfiles=
2772                 . ${srcdir}/$s/config-lang.in
2773                 if test "x$language" = x
2774                 then
2775                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
2776                         exit 1
2777                 fi
2778                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
2779                 if test -f ${srcdir}/$s/Makefile.in
2780                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
2781                 fi
2782                 all_languages="$all_languages $language"
2783                 if test "x$boot_language" = xyes
2784                 then
2785                         all_boot_languages="$all_boot_languages $language"
2786                 fi
2787                 all_compilers="$all_compilers $compilers"
2788                 all_stagestuff="$all_stagestuff $stagestuff"
2789                 all_outputs="$all_outputs $outputs"
2790                 all_gtfiles="$all_gtfiles $gtfiles"
2791                 for f in .. $gtfiles
2792                 do
2793                      if test $f != ".."
2794                      then
2795                          all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2796                          all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2797                      fi
2798                 done
2799         fi
2800 done
2801
2802 # Pick up gtfiles for c
2803 gtfiles=
2804 s="c"
2805 . ${srcdir}/c-config-lang.in
2806 all_gtfiles="$all_gtfiles $gtfiles"
2807 for f in .. $gtfiles
2808 do
2809      if test $f != ".."
2810      then
2811         all_gtfiles_files_langs="$all_gtfiles_files_langs ${s} "
2812         all_gtfiles_files_files="$all_gtfiles_files_files ${f} "
2813      fi
2814 done
2815
2816 check_languages=
2817 for language in .. $all_languages
2818 do
2819         if test $language != ".."
2820         then
2821                 check_languages="$check_languages check-$language"
2822         fi
2823 done
2824
2825 # Since we can't use `::' targets, we link each language in
2826 # with a set of hooks, reached indirectly via lang.${target}.
2827
2828 rm -f Make-hooks
2829 touch Make-hooks
2830 target_list="all.build all.cross start.encap rest.encap tags \
2831         info dvi generated-manpages \
2832         install-normal install-common install-info install-man \
2833         uninstall \
2834         mostlyclean clean distclean extraclean maintainer-clean \
2835         stage1 stage2 stage3 stage4"
2836 for t in $target_list
2837 do
2838         x=
2839         for lang in .. $all_languages
2840         do
2841                 if test $lang != ".."; then
2842                         x="$x $lang.$t"
2843                 fi
2844         done
2845         echo "lang.$t: $x" >> Make-hooks
2846 done
2847
2848 # Create .gdbinit.
2849
2850 echo "dir ." > .gdbinit
2851 echo "dir ${srcdir}" >> .gdbinit
2852 if test x$gdb_needs_out_file_path = xyes
2853 then
2854         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
2855 fi
2856 if test "x$subdirs" != x; then
2857         for s in $subdirs
2858         do
2859                 echo "dir ${srcdir}/$s" >> .gdbinit
2860         done
2861 fi
2862 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
2863
2864 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
2865 # absolute path for gcc_tooldir based on inserting the number of up-directory
2866 # movements required to get from $(exec_prefix) to $(prefix) into the basic
2867 # $(libsubdir)/@(unlibsubdir) based path.
2868 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
2869 # make and thus we'd get different behavior depending on where we built the
2870 # sources.
2871 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
2872     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
2873 else
2874 changequote(<<, >>)dnl
2875 # An explanation of the sed strings:
2876 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
2877 #  -e 's|/$||'            match a trailing forward slash and eliminates it
2878 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
2879 #  -e 's|/[^/]*|../|g'    replaces each occurrence of /<directory> with ../
2880 #
2881 # (*) Note this pattern overwrites the first character of the string
2882 # with a forward slash if one is not already present.  This is not a
2883 # problem because the exact names of the sub-directories concerned is
2884 # unimportant, just the number of them matters.
2885 #
2886 # The practical upshot of these patterns is like this:
2887 #
2888 #  prefix     exec_prefix        result
2889 #  ------     -----------        ------
2890 #   /foo        /foo/bar          ../
2891 #   /foo/       /foo/bar          ../
2892 #   /foo        /foo/bar/         ../
2893 #   /foo/       /foo/bar/         ../
2894 #   /foo        /foo/bar/ugg      ../../
2895 #
2896     dollar='$$'
2897     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
2898 changequote([, ])dnl
2899 fi
2900 AC_SUBST(gcc_tooldir)
2901 AC_SUBST(dollar)
2902
2903 # Find a directory in which to install a shared libgcc.
2904
2905 AC_ARG_ENABLE(version-specific-runtime-libs,
2906 [  --enable-version-specific-runtime-libs
2907                           specify that runtime libraries should be
2908                           installed in a compiler-specific directory])
2909
2910 AC_ARG_WITH(slibdir,
2911 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
2912 slibdir="$with_slibdir",
2913 if test "${enable_version_specific_runtime_libs+set}" = set; then
2914   slibdir='$(libsubdir)'
2915 elif test "$host" != "$target"; then
2916   slibdir='$(build_tooldir)/lib'
2917 else
2918   slibdir='$(libdir)'
2919 fi)
2920 AC_SUBST(slibdir)
2921
2922 objdir=`${PWDCMD-pwd}`
2923 AC_SUBST(objdir)
2924
2925 # Process the language and host/target makefile fragments.
2926 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
2927
2928 # Substitute configuration variables
2929 AC_SUBST(subdirs)
2930 AC_SUBST(srcdir)
2931 AC_SUBST(all_boot_languages)
2932 AC_SUBST(all_compilers)
2933 AC_SUBST(all_gtfiles)
2934 AC_SUBST(all_gtfiles_files_langs)
2935 AC_SUBST(all_gtfiles_files_files)
2936 AC_SUBST(all_lang_makefiles)
2937 AC_SUBST(all_languages)
2938 AC_SUBST(all_stagestuff)
2939 AC_SUBST(build_exeext)
2940 AC_SUBST(build_install_headers_dir)
2941 AC_SUBST(build_xm_file_list)
2942 AC_SUBST(build_xm_file)
2943 AC_SUBST(build_xm_defines)
2944 AC_SUBST(check_languages)
2945 AC_SUBST(cc_set_by_configure)
2946 AC_SUBST(quoted_cc_set_by_configure)
2947 AC_SUBST(cpp_install_dir)
2948 AC_SUBST(dep_host_xmake_file)
2949 AC_SUBST(dep_tmake_file)
2950 AC_SUBST(extra_headers_list)
2951 AC_SUBST(extra_objs)
2952 AC_SUBST(extra_parts)
2953 AC_SUBST(extra_passes)
2954 AC_SUBST(extra_programs)
2955 AC_SUBST(float_h_file)
2956 AC_SUBST(gcc_config_arguments)
2957 AC_SUBST(gcc_gxx_include_dir)
2958 AC_SUBST(libstdcxx_incdir)
2959 AC_SUBST(gcc_version)
2960 AC_SUBST(gcc_version_full)
2961 AC_SUBST(gcc_version_trigger)
2962 AC_SUBST(host_exeext)
2963 AC_SUBST(host_extra_gcc_objs)
2964 AC_SUBST(host_xm_file_list)
2965 AC_SUBST(host_xm_file)
2966 AC_SUBST(host_xm_defines)
2967 AC_SUBST(out_host_hook_obj)
2968 AC_SUBST(install)
2969 AC_SUBST(lang_options_files)
2970 AC_SUBST(lang_specs_files)
2971 AC_SUBST(lang_tree_files)
2972 AC_SUBST(local_prefix)
2973 AC_SUBST(md_file)
2974 AC_SUBST(objc_boehm_gc)
2975 AC_SUBST(out_file)
2976 AC_SUBST(out_object_file)
2977 AC_SUBST(stage_prefix_set_by_configure)
2978 AC_SUBST(quoted_stage_prefix_set_by_configure)
2979 AC_SUBST(symbolic_link)
2980 AC_SUBST(thread_file)
2981 AC_SUBST(tm_file_list)
2982 AC_SUBST(tm_file)
2983 AC_SUBST(tm_defines)
2984 AC_SUBST(tm_p_file_list)
2985 AC_SUBST(tm_p_file)
2986 AC_SUBST(xm_file)
2987 AC_SUBST(xm_defines)
2988 AC_SUBST(target_alias)
2989 AC_SUBST(c_target_objs)
2990 AC_SUBST(cxx_target_objs)
2991 AC_SUBST(target_cpu_default)
2992
2993 AC_SUBST_FILE(target_overrides)
2994 AC_SUBST_FILE(host_overrides)
2995 AC_SUBST_FILE(language_fragments)
2996 AC_SUBST_FILE(language_hooks)
2997
2998 # Echo that links are built
2999 if test x$host = x$target
3000 then
3001         str1="native "
3002 else
3003         str1="cross-"
3004         str2=" from $host"
3005 fi
3006
3007 if test x$host != x$build
3008 then
3009         str3=" on a $build system"
3010 fi
3011
3012 if test "x$str2" != x || test "x$str3" != x
3013 then
3014         str4=
3015 fi
3016
3017 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
3018
3019 if test "x$str2" != x || test "x$str3" != x
3020 then
3021         echo " ${str2}${str3}." 1>&2
3022 fi
3023
3024 # Truncate the target if necessary
3025 if test x$host_truncate_target != x; then
3026         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
3027 fi
3028
3029 # Configure the subdirectories
3030 # AC_CONFIG_SUBDIRS($subdirs)
3031
3032 # Create the Makefile
3033 # and configure language subdirectories
3034 AC_OUTPUT($all_outputs,
3035 [
3036 case x$CONFIG_HEADERS in
3037 xauto-host.h:config.in)
3038 echo > cstamp-h ;;
3039 esac
3040 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
3041 # bootstrapping and the installation procedure can still use
3042 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
3043 # FLAGS_TO_PASS has been modified to solve the problem there.
3044 # This is virtually a duplicate of what happens in configure.lang; we do
3045 # an extra check to make sure this only happens if ln -s can be used.
3046 if test "$symbolic_link" = "ln -s"; then
3047  for d in .. ${subdirs} fixinc ; do
3048    if test $d != ..; then
3049         STARTDIR=`${PWDCMD-pwd}`
3050         cd $d
3051         for t in stage1 stage2 stage3 stage4 include
3052         do
3053                 rm -f $t
3054                 $symbolic_link ../$t $t 2>/dev/null
3055         done
3056         cd $STARTDIR
3057    fi
3058  done
3059 else true ; fi
3060 # Avoid having to add intl to our include paths.
3061 if test -f intl/libintl.h; then
3062   echo creating libintl.h
3063   echo '#include "intl/libintl.h"' >libintl.h
3064 fi
3065 ],
3066 [subdirs='$subdirs'
3067 symbolic_link='$symbolic_link'
3068 ])