gcc/configure.in

   1 # configure.in for GNU CC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   5
   6 #This file is part of GNU CC.
   7
   8 #GNU CC is free software; you can redistribute it and/or modify
   9 #it under the terms of the GNU General Public License as published by
  10 #the Free Software Foundation; either version 2, or (at your option)
  11 #any later version.
  12
  13 #GNU CC is distributed in the hope that it will be useful,
  14 #but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #GNU General Public License for more details.
  17
  18 #You should have received a copy of the GNU General Public License
  19 #along with GNU CC; see the file COPYING.  If not, write to
  20 #the Free Software Foundation, 59 Temple Place - Suite 330,
  21 #Boston, MA 02111-1307, USA.
  22
  23 # Initialization and defaults
  24 AC_PREREQ(2.13)
  25 AC_INIT(tree.c)
  26 AC_CONFIG_HEADER(auto-host.h:config.in)
  27
  28 remove=rm
  29 hard_link=ln
  30 symbolic_link='ln -s'
  31 copy=cp
  32
  33 # Check for bogus environment variables.
  34 # Test if LIBRARY_PATH contains the notation for the current directory
  35 # since this would lead to problems installing/building glibc.
  36 # LIBRARY_PATH contains the current directory if one of the following
  37 # is true:
  38 # - one of the terminals (":" and ";") is the first or last sign
  39 # - two terminals occur directly after each other
  40 # - the path contains an element with a dot in it
  41 AC_MSG_CHECKING(LIBRARY_PATH variable)
  42 changequote(,)dnl
  43 case ${LIBRARY_PATH} in
  44   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  45     library_path_setting="contains current directory"
  46     ;;
  47   *)
  48     library_path_setting="ok"
  49     ;;
  50 esac
  51 changequote([,])dnl
  52 AC_MSG_RESULT($library_path_setting)
  53 if test "$library_path_setting" != "ok"; then
  54 AC_MSG_ERROR([
  55 *** LIBRARY_PATH shouldn't contain the current directory when
  56 *** building gcc. Please change the environment variable
  57 *** and run configure again.])
  58 fi
  59
  60 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  61 # since this would lead to problems installing/building glibc.
  62 # GCC_EXEC_PREFIX contains the current directory if one of the following
  63 # is true:
  64 # - one of the terminals (":" and ";") is the first or last sign
  65 # - two terminals occur directly after each other
  66 # - the path contains an element with a dot in it
  67 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  68 changequote(,)dnl
  69 case ${GCC_EXEC_PREFIX} in
  70   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  71     gcc_exec_prefix_setting="contains current directory"
  72     ;;
  73   *)
  74     gcc_exec_prefix_setting="ok"
  75     ;;
  76 esac
  77 changequote([,])dnl
  78 AC_MSG_RESULT($gcc_exec_prefix_setting)
  79 if test "$gcc_exec_prefix_setting" != "ok"; then
  80 AC_MSG_ERROR([
  81 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  82 *** building gcc. Please change the environment variable
  83 *** and run configure again.])
  84 fi
  85
  86 # Check for additional parameters
  87
  88 # With GNU ld
  89 AC_ARG_WITH(gnu-ld,
  90 [  --with-gnu-ld           arrange to work with GNU ld.],
  91 gnu_ld_flag="$with_gnu_ld",
  92 gnu_ld_flag=no)
  93
  94 # With pre-defined ld
  95 AC_ARG_WITH(ld,
  96 [  --with-ld               arrange to use the specified ld (full pathname).],
  97 DEFAULT_LINKER="$with_ld")
  98 if test x"${DEFAULT_LINKER+set}" = x"set"; then
  99   if test ! -x "$DEFAULT_LINKER"; then
 100     AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 101   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 102     gnu_ld_flag=yes
 103   fi
 104   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 105         [Define to enable the use of a default linker.])
 106 fi
 107
 108 # With GNU as
 109 AC_ARG_WITH(gnu-as,
 110 [  --with-gnu-as           arrange to work with GNU as.],
 111 gas_flag="$with_gnu_as",
 112 gas_flag=no)
 113
 114 AC_ARG_WITH(as,
 115 [  --with-as               arrange to use the specified as (full pathname).],
 116 DEFAULT_ASSEMBLER="$with_as")
 117 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 118   if test ! -x "$DEFAULT_ASSEMBLER"; then
 119     AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 120   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 121     gas_flag=yes
 122   fi
 123   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 124         [Define to enable the use of a default assembler.])
 125 fi
 126
 127 # With stabs
 128 AC_ARG_WITH(stabs,
 129 [  --with-stabs            arrange to use stabs instead of host debug format.],
 130 stabs="$with_stabs",
 131 stabs=no)
 132
 133 # With ELF
 134 AC_ARG_WITH(elf,
 135 [  --with-elf              arrange to use ELF instead of host debug format.],
 136 elf="$with_elf",
 137 elf=no)
 138
 139 # Specify the local prefix
 140 local_prefix=
 141 AC_ARG_WITH(local-prefix,
 142 [  --with-local-prefix=DIR specifies directory to put local include.],
 143 [case "${withval}" in
 144 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 145 no)     ;;
 146 *)      local_prefix=$with_local_prefix ;;
 147 esac])
 148
 149 # Default local prefix if it is empty
 150 if test x$local_prefix = x; then
 151         local_prefix=/usr/local
 152 fi
 153
 154 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 155 # passed in by the toplevel make and thus we'd get different behavior
 156 # depending on where we built the sources.
 157 gcc_gxx_include_dir=
 158 # Specify the g++ header file directory
 159 AC_ARG_WITH(gxx-include-dir,
 160 [  --with-gxx-include-dir=DIR
 161                           specifies directory to put g++ header files.],
 162 [case "${withval}" in
 163 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 164 no)     ;;
 165 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 166 esac])
 167
 168 if test x${gcc_gxx_include_dir} = x; then
 169   if test x${enable_version_specific_runtime_libs} = xyes; then
 170     gcc_gxx_include_dir='${libsubdir}/include/g++'
 171   else
 172     topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
 173 changequote(<<, >>)dnl
 174     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 175 changequote([, ])dnl
 176   fi
 177 fi
 178
 179 # Determine whether or not multilibs are enabled.
 180 AC_ARG_ENABLE(multilib,
 181 [  --enable-multilib      enable library support for multiple ABIs],
 182 [], [enable_multilib=yes])
 183 AC_SUBST(enable_multilib)
 184
 185 # Enable expensive internal checks
 186 AC_ARG_ENABLE(checking,
 187 [  --enable-checking[=LIST]
 188                           enable expensive run-time checks.  With LIST,
 189                           enable only specific categories of checks.
 190                           Categories are: misc,tree,rtl,gc,gcac; default
 191                           is misc,tree,gc],
 192 [ac_checking=
 193 ac_tree_checking=
 194 ac_rtl_checking=
 195 ac_gc_checking=
 196 ac_gc_always_collect=
 197 case "${enableval}" in
 198 yes)    ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;;
 199 no)     ;;
 200 *)      IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 201         set fnord $enableval; shift
 202         IFS="$ac_save_IFS"
 203         for check
 204         do
 205                 case $check in
 206                 misc)   ac_checking=1 ;;
 207                 tree)   ac_tree_checking=1 ;;
 208                 rtl)    ac_rtl_checking=1 ;;
 209                 gc)     ac_gc_checking=1 ;;
 210                 gcac)   ac_gc_always_collect=1 ;;
 211                 *)      AC_MSG_ERROR(unknown check category $check) ;;
 212                 esac
 213         done
 214         ;;
 215 esac
 216 ],
 217 # Enable some checks by default for development versions of GCC
 218 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1;])
 219 if test x$ac_checking != x ; then
 220   AC_DEFINE(ENABLE_CHECKING, 1,
 221 [Define if you want more run-time sanity checks.  This one gets a grab
 222    bag of miscellaneous but relatively cheap checks.])
 223 fi
 224 if test x$ac_tree_checking != x ; then
 225   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 226 [Define if you want all operations on trees (the basic data
 227    structure of the front ends) to be checked for dynamic type safety
 228    at runtime.  This is moderately expensive.])
 229 fi
 230 if test x$ac_rtl_checking != x ; then
 231   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 232 [Define if you want all operations on RTL (the basic data structure
 233    of the optimizer and back end) to be checked for dynamic type safety
 234    at runtime.  This is quite expensive.])
 235 fi
 236 if test x$ac_gc_checking != x ; then
 237   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 238 [Define if you want the garbage collector to do object poisoning and
 239    other memory allocation checks.  This is quite expensive.])
 240 fi
 241 if test x$ac_gc_always_collect != x ; then
 242   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 243 [Define if you want the garbage collector to operate in maximally
 244    paranoid mode, validating the entire heap and collecting garbage at
 245    every opportunity.  This is extremely expensive.])
 246 fi
 247
 248
 249 AC_ARG_ENABLE(cpp,
 250 [  --disable-cpp           don't provide a user-visible C preprocessor.],
 251 [], [enable_cpp=yes])
 252
 253 AC_ARG_WITH(cpp_install_dir,
 254 [  --with-cpp-install-dir=DIR
 255                           install the user visible C preprocessor in DIR
 256                           (relative to PREFIX) as well as PREFIX/bin.],
 257 [if test x$withval = xyes; then
 258   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 259 elif test x$withval != xno; then
 260   cpp_install_dir=$withval
 261 fi])
 262
 263 # Enable Multibyte Characters for C/C++
 264 AC_ARG_ENABLE(c-mbchar,
 265 [  --enable-c-mbchar       Enable multibyte characters for C and C++.],
 266 if test x$enable_c_mbchar != xno; then
 267   AC_DEFINE(MULTIBYTE_CHARS, 1,
 268   [Define if you want the C and C++ compilers to support multibyte
 269    character sets for source code.])
 270 fi)
 271
 272 # Enable threads
 273 # Pass with no value to take the default
 274 # Pass with a value to specify a thread package
 275 AC_ARG_ENABLE(threads,
 276 [  --enable-threads        enable thread usage for target GCC.
 277   --enable-threads=LIB    use LIB thread package for target GCC.],,
 278 enable_threads='')
 279
 280 enable_threads_flag=$enable_threads
 281 # Check if a valid thread package
 282 case x${enable_threads_flag} in
 283         x | xno)
 284                 # No threads
 285                 target_thread_file='single'
 286                 ;;
 287         xyes)
 288                 # default
 289                 target_thread_file=''
 290                 ;;
 291         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 292         xsolaris | xwin32 | xdce | xvxworks | xaix)
 293                 target_thread_file=$enable_threads_flag
 294                 ;;
 295         *)
 296                 echo "$enable_threads is an unknown thread package" 1>&2
 297                 exit 1
 298                 ;;
 299 esac
 300
 301 AC_ARG_ENABLE(objc-gc,
 302 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 303                           the GNU Objective-C runtime.],
 304 if test x$enable_objc_gc = xno; then
 305         objc_boehm_gc=''
 306 else
 307         objc_boehm_gc=1
 308 fi,
 309 objc_boehm_gc='')
 310
 311 AC_ARG_WITH(dwarf2,
 312 [  --with-dwarf2          force the default debug format to be DWARF2.],
 313 dwarf2="$with_dwarf2",
 314 dwarf2=no)
 315
 316 AC_ARG_ENABLE(shared,
 317 [  --disable-shared       don't provide a shared libgcc.],
 318 [
 319   case $enable_shared in
 320   yes | no) ;;
 321   *)
 322     enable_shared=no
 323     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 324     for pkg in $enableval; do
 325       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 326         enable_shared=yes
 327       fi
 328     done
 329     IFS="$ac_save_ifs"
 330     ;;
 331   esac
 332 ], [enable_shared=yes])
 333 AC_SUBST(enable_shared)
 334
 335 # Determine the host, build, and target systems
 336 AC_CANONICAL_SYSTEM
 337
 338 # Find the native compiler
 339 AC_PROG_CC
 340 AC_PROG_CC_C_O
 341 # autoconf is lame and doesn't give us any substitution variable for this.
 342 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 343   NO_MINUS_C_MINUS_O=yes
 344 else
 345   OUTPUT_OPTION='-o $@'
 346 fi
 347 AC_SUBST(NO_MINUS_C_MINUS_O)
 348 AC_SUBST(OUTPUT_OPTION)
 349
 350 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 351 ac_cv_prog_cc_no_long_long,
 352 [save_CFLAGS="$CFLAGS"
 353 CFLAGS="-Wno-long-long"
 354 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 355                ac_cv_prog_cc_no_long_long=no)
 356 CFLAGS="$save_CFLAGS"])
 357 strict1_warn=
 358 if test $ac_cv_prog_cc_no_long_long = yes; then
 359   strict1_warn="-pedantic -Wno-long-long"
 360 fi
 361 AC_SUBST(strict1_warn)
 362
 363 AC_PROG_CPP
 364 AC_C_INLINE
 365 gcc_AC_C_VOLATILE
 366
 367 gcc_AC_C_LONG_DOUBLE
 368 gcc_AC_C_LONG_LONG
 369
 370 # sizeof(char) is 1 by definition.
 371 gcc_AC_COMPILE_CHECK_SIZEOF(short)
 372 gcc_AC_COMPILE_CHECK_SIZEOF(int)
 373 gcc_AC_COMPILE_CHECK_SIZEOF(long)
 374 if test $ac_cv_c_long_long = yes; then
 375   gcc_AC_COMPILE_CHECK_SIZEOF(long long)
 376 fi
 377 if test $ac_cv_c___int64 = yes; then
 378   gcc_AC_COMPILE_CHECK_SIZEOF(__int64)
 379 fi
 380
 381 gcc_AC_C_CHARSET
 382
 383 # If the native compiler is GCC, we can enable warnings even in stage1.
 384 # That's useful for people building cross-compilers, or just running a
 385 # quick `make'.
 386 warn_cflags=
 387 if test "x$GCC" = "xyes"; then
 388   warn_cflags='$(GCC_WARN_CFLAGS)'
 389 fi
 390 AC_SUBST(warn_cflags)
 391
 392 # Stage specific cflags for build.
 393 stage1_cflags=
 394 case $build in
 395 vax-*-*)
 396   if test x$GCC = xyes
 397   then
 398     stage1_cflags="-Wa,-J"
 399   else
 400     stage1_cflags="-J"
 401   fi
 402   ;;
 403 esac
 404 AC_SUBST(stage1_cflags)
 405
 406 AC_PROG_MAKE_SET
 407
 408 AC_MSG_CHECKING([whether a default assembler was specified])
 409 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 410     if test x"$gas_flag" = x"no"; then
 411         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 412     else
 413         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 414     fi
 415 else
 416     AC_MSG_RESULT(no)
 417 fi
 418
 419 AC_MSG_CHECKING([whether a default linker was specified])
 420 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 421     if test x"$gnu_ld_flag" = x"no"; then
 422         AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 423     else
 424         AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 425     fi
 426 else
 427     AC_MSG_RESULT(no)
 428 fi
 429
 430 AC_MSG_CHECKING(for GNU C library)
 431 AC_CACHE_VAL(gcc_cv_glibc,
 432 [AC_TRY_COMPILE(
 433   [#include <features.h>],[
 434 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 435 #error Not a GNU C library system
 436 #endif],
 437   [gcc_cv_glibc=yes],
 438   gcc_cv_glibc=no)])
 439 AC_MSG_RESULT($gcc_cv_glibc)
 440 if test $gcc_cv_glibc = yes; then
 441   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 442 fi
 443
 444 # Find some useful tools
 445 AC_PROG_AWK
 446 gcc_AC_PROG_LN
 447 gcc_AC_PROG_LN_S
 448 AC_PROG_RANLIB
 449 gcc_AC_PROG_INSTALL
 450
 451 AC_HEADER_STDC
 452 AC_HEADER_TIME
 453 gcc_AC_HEADER_STRING
 454 AC_HEADER_SYS_WAIT
 455 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 456                  fcntl.h unistd.h sys/file.h sys/time.h \
 457                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 458                  direct.h malloc.h langinfo.h iconv.h stdbool.h)
 459
 460 # Check for thread headers.
 461 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 462 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 463
 464 # These tests can't be done till we know if we have limits.h.
 465 gcc_AC_C_CHAR_BIT
 466 gcc_AC_C_COMPILE_ENDIAN
 467 gcc_AC_C_FLOAT_FORMAT
 468
 469 # See if GNAT has been installed
 470 AC_CHECK_PROG(have_gnat, gnatbind, yes, no)
 471
 472 # See if we have the mktemp command.
 473 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 474
 475 # Do we have a single-tree copy of texinfo?
 476 if test -f $srcdir/../texinfo/Makefile.in; then
 477   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 478   gcc_cv_prog_makeinfo_modern=yes
 479   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 480 else
 481   # See if makeinfo has been installed and is modern enough
 482   # that we can use it.
 483   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 484   [GNU texinfo.* \([0-9][0-9.]*\)],
 485   [4.*])
 486 fi
 487
 488 if test $gcc_cv_prog_makeinfo_modern = no; then
 489   AC_MSG_WARN([
 490 *** Makeinfo is missing or too old.
 491 *** Info documentation will not be built.])
 492   BUILD_INFO=
 493 else
 494   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 495 fi
 496
 497 # Is pod2man recent enough to regenerate manpages?
 498 AC_MSG_CHECKING([for recent Pod::Man])
 499 if perl -e 'use 1.10 Pod::Man' >/dev/null 2>&1; then
 500   AC_MSG_RESULT(yes)
 501   GENERATED_MANPAGES=generated-manpages         AC_SUBST(GENERATED_MANPAGES)
 502 else
 503   AC_MSG_RESULT(no)
 504   GENERATED_MANPAGES=
 505 fi
 506
 507 # How about lex?
 508 dnl Don't use AC_PROG_LEX; we insist on flex.
 509 dnl LEXLIB is not useful in gcc.
 510 if test -f $srcdir/../flex/skel.c; then
 511   FLEX='$(objdir)/../flex/flex'
 512 else
 513   AC_CHECK_PROG(FLEX, flex, flex, false)
 514 fi
 515
 516 # Bison?
 517 # The -L switch is so bison can find its skeleton file.
 518 if test -f $srcdir/../bison/bison.simple; then
 519   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 520 else
 521   AC_CHECK_PROG(BISON, bison, bison, false)
 522 fi
 523
 524 # See if the stage1 system preprocessor understands the ANSI C
 525 # preprocessor stringification operator.  (Used by symcat.h.)
 526 AC_C_STRINGIZE
 527
 528 # Use <inttypes.h> only if it exists,
 529 # doesn't clash with <sys/types.h>, and declares intmax_t.
 530 AC_MSG_CHECKING(for inttypes.h)
 531 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 532 [AC_TRY_COMPILE(
 533   [#include <sys/types.h>
 534 #include <inttypes.h>],
 535   [intmax_t i = -1;],
 536   [gcc_cv_header_inttypes_h=yes],
 537   gcc_cv_header_inttypes_h=no)])
 538 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 539 if test $gcc_cv_header_inttypes_h = yes; then
 540   AC_DEFINE(HAVE_INTTYPES_H, 1,
 541         [Define if you have a working <inttypes.h> header file.])
 542 fi
 543
 544 dnl Disabled until we have a complete test for buggy enum bitfields.
 545 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 546
 547 AC_CHECK_FUNCS(strtoul bsearch popen times clock \
 548         strchr strrchr kill getrlimit setrlimit atoll atoq \
 549         sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 550         fputs_unlocked getrusage iconv nl_langinfo lstat)
 551
 552 AC_CHECK_TYPE(ssize_t, int)
 553
 554 # Try to determine the array type of the second argument of getgroups
 555 # for the target system (int or gid_t).
 556 AC_TYPE_GETGROUPS
 557 if test "${target}" = "${build}"; then
 558   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 559 else
 560   case "${target}" in
 561         # This condition may need some tweaking.  It should include all
 562         # targets where the array type of the second argument of getgroups
 563         # is int and the type of gid_t is not equivalent to int.
 564         *-*-sunos* | *-*-ultrix*)
 565                 TARGET_GETGROUPS_T=int
 566                 ;;
 567         *)
 568                 TARGET_GETGROUPS_T=gid_t
 569                 ;;
 570   esac
 571 fi
 572 AC_SUBST(TARGET_GETGROUPS_T)
 573
 574 gcc_AC_FUNC_VFPRINTF_DOPRNT
 575 gcc_AC_FUNC_STRSTR
 576 gcc_AC_FUNC_PRINTF_PTR
 577
 578 case "${host}" in
 579 *-*-uwin*)
 580   AC_MSG_ERROR([
 581 *** UWIN may not be used as a host platform because
 582 *** linking with posix.dll is not allowed by the GNU GPL])
 583   ;;
 584 esac
 585 AC_FUNC_VFORK
 586 AC_FUNC_MMAP_ANYWHERE
 587 AC_FUNC_MMAP_FILE
 588
 589 # We will need to find libiberty.h and ansidecl.h
 590 saved_CFLAGS="$CFLAGS"
 591 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 592 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
 593         strsignal putc_unlocked fputs_unlocked strstr environ errno \
 594         malloc realloc calloc free basename getopt clock, , ,[
 595 #include "ansidecl.h"
 596 #include "system.h"])
 597
 598 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 599 #include "ansidecl.h"
 600 #include "system.h"
 601 #ifdef HAVE_SYS_RESOURCE_H
 602 #include <sys/resource.h>
 603 #endif
 604 ])
 605
 606 gcc_AC_CHECK_DECLS(times, , ,[
 607 #include "ansidecl.h"
 608 #include "system.h"
 609 #ifdef HAVE_SYS_TIMES_H
 610 #include <sys/times.h>
 611 #endif
 612 ])
 613
 614 # More time-related stuff.
 615 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
 616 AC_TRY_COMPILE([
 617 #include "ansidecl.h"
 618 #include "system.h"
 619 #ifdef HAVE_SYS_TIMES_H
 620 #include <sys/times.h>
 621 #endif
 622 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
 623 if test $ac_cv_struct_tms = yes; then
 624   AC_DEFINE(HAVE_STRUCT_TMS, 1,
 625   [Define if <sys/times.h> defines struct tms.])
 626 fi
 627
 628 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
 629 # revisit after autoconf 2.50.
 630 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
 631 AC_TRY_COMPILE([
 632 #include "ansidecl.h"
 633 #include "system.h"
 634 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
 635 if test $gcc_cv_type_clock_t = yes; then
 636   AC_DEFINE(HAVE_CLOCK_T, 1,
 637   [Define if <time.h> defines clock_t.])
 638 fi
 639
 640 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 641 CFLAGS="$saved_CFLAGS"
 642
 643 # mkdir takes a single argument on some systems.
 644 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 645
 646 # File extensions
 647 manext='.1'
 648 objext='.o'
 649 AC_SUBST(manext)
 650 AC_SUBST(objext)
 651
 652 build_xm_file=
 653 build_xm_defines=
 654 build_install_headers_dir=install-headers-tar
 655 build_exeext=
 656 host_xm_file=
 657 host_xm_defines=
 658 host_xmake_file=
 659 host_truncate_target=
 660 host_exeext=
 661
 662 # Decode the host machine, then the target machine.
 663 # For the host machine, we save the xm_file variable as host_xm_file;
 664 # then we decode the target machine and forget everything else
 665 # that came from the host machine.
 666 for machine in $build $host $target; do
 667         . ${srcdir}/config.gcc
 668 done
 669
 670 extra_objs="${host_extra_objs} ${extra_objs}"
 671
 672 # Default the target-machine variables that were not explicitly set.
 673 if test x"$tm_file" = x
 674 then tm_file=$cpu_type/$cpu_type.h; fi
 675
 676 if test x"$extra_headers" = x
 677 then extra_headers=; fi
 678
 679 if test x$md_file = x
 680 then md_file=$cpu_type/$cpu_type.md; fi
 681
 682 if test x$out_file = x
 683 then out_file=$cpu_type/$cpu_type.c; fi
 684
 685 if test x"$tmake_file" = x
 686 then tmake_file=$cpu_type/t-$cpu_type
 687 fi
 688
 689 if test x"$dwarf2" = xyes
 690 then tm_file="$tm_file tm-dwarf2.h"
 691 fi
 692
 693 if test x$float_format = x
 694 then float_format=i64
 695 fi
 696
 697 if test $float_format = none
 698 then float_h_file=Makefile.in
 699 else float_h_file=float-$float_format.h
 700 fi
 701
 702 # Handle cpp installation.
 703 if test x$enable_cpp != xno
 704 then
 705   tmake_file="$tmake_file t-install-cpp"
 706 fi
 707
 708 # Say what files are being used for the output code and MD file.
 709 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
 710 echo "Using \`$srcdir/config/$md_file' as machine description file."
 711
 712 # If any of the xm_file variables contain nonexistent files, warn
 713 # about them and drop them.
 714
 715 changequote(,)dnl
 716 bx=
 717 for x in $build_xm_file; do
 718   if    test -f $srcdir/config/$x
 719   then      bx="$bx $x"
 720   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 721   fi
 722 done
 723 build_xm_file="$bx"
 724
 725 hx=
 726 for x in $host_xm_file; do
 727   if    test -f $srcdir/config/$x
 728   then      hx="$hx $x"
 729   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 730   fi
 731 done
 732 host_xm_file="$hx"
 733
 734 tx=
 735 for x in $xm_file; do
 736   if    test -f $srcdir/config/$x
 737   then      tx="$tx $x"
 738   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 739   fi
 740 done
 741 xm_file="$tx"
 742 changequote([,])dnl
 743
 744 count=a
 745 for f in $tm_file; do
 746         count=${count}x
 747 done
 748 if test $count = ax; then
 749         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
 750 else
 751         echo "Using the following target machine macro files:"
 752         for f in $tm_file; do
 753                 echo "  $srcdir/config/$f"
 754         done
 755 fi
 756
 757 count=a
 758 for f in $host_xm_file; do
 759         count=${count}x
 760 done
 761 if test $count = a; then
 762         :
 763 elif test $count = ax; then
 764         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
 765 else
 766         echo "Using the following host machine macro files:"
 767         for f in $host_xm_file; do
 768                 echo "  $srcdir/config/$f"
 769         done
 770 fi
 771
 772 if test "$host_xm_file" != "$build_xm_file"; then
 773         count=a
 774         for f in $build_xm_file; do
 775                 count=${count}x
 776         done
 777         if test $count = a; then
 778                 :
 779         elif test $count = ax; then
 780                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
 781         else
 782                 echo "Using the following build machine macro files:"
 783                 for f in $build_xm_file; do
 784                         echo "  $srcdir/config/$f"
 785                 done
 786         fi
 787 fi
 788
 789 if test x$thread_file = x; then
 790         if test x$target_thread_file != x; then
 791                 thread_file=$target_thread_file
 792         else
 793                 thread_file='single'
 794         fi
 795 fi
 796
 797 # auto-host.h is the file containing items generated by autoconf and is
 798 # the first file included by config.h.
 799 # If host=build, it is correct to have hconfig include auto-host.h
 800 # as well.  If host!=build, we are in error and need to do more
 801 # work to find out the build config parameters.
 802 if test x$host = x$build
 803 then
 804         build_auto=auto-host.h
 805 else
 806         # We create a subdir, then run autoconf in the subdir.
 807         # To prevent recursion we set host and build for the new
 808         # invocation of configure to the build for this invocation
 809         # of configure.
 810         tempdir=build.$$
 811         rm -rf $tempdir
 812         mkdir $tempdir
 813         cd $tempdir
 814         case ${srcdir} in
 815         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
 816         *) realsrcdir=../${srcdir};;
 817         esac
 818         CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
 819                 --target=$target --host=$build --build=$build
 820
 821         # We just finished tests for the build machine, so rename
 822         # the file auto-build.h in the gcc directory.
 823         mv auto-host.h ../auto-build.h
 824         cd ..
 825         rm -rf $tempdir
 826         build_auto=auto-build.h
 827 fi
 828
 829 tm_file="${tm_file} defaults.h"
 830 host_xm_file="auto-host.h ansidecl.h ${host_xm_file} ${tm_file}"
 831 build_xm_file="${build_auto} ansidecl.h ${build_xm_file} ${tm_file}"
 832 xm_file="ansidecl.h ${xm_file} ${tm_file}"
 833
 834 # Truncate the target if necessary
 835 if test x$host_truncate_target != x; then
 836         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
 837 fi
 838
 839 # Get the version trigger filename from the toplevel
 840 if test "${with_gcc_version_trigger+set}" = set; then
 841         gcc_version_trigger=$with_gcc_version_trigger
 842 else
 843         gcc_version_trigger=${srcdir}/version.c
 844 fi
 845 changequote(,)dnl
 846 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 847 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 848
 849 # Compile in configure arguments.
 850 if test -f configargs.h ; then
 851         # Being re-configured.
 852         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 853         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
 854 else
 855         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
 856 fi
 857 cat > configargs.h <<EOF
 858 /* Generated automatically. */
 859 static const char configuration_arguments[] = "$gcc_config_arguments";
 860 static const char thread_model[] = "$thread_file";
 861 EOF
 862 changequote([,])dnl
 863
 864 # Internationalization
 865 PACKAGE=gcc
 866 VERSION="$gcc_version"
 867 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
 868         [Define to the name of the distribution.])
 869 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
 870         [Define to the version of the distribution.])
 871 AC_SUBST(PACKAGE)
 872 AC_SUBST(VERSION)
 873
 874 ALL_LINGUAS="sv"
 875
 876 # Enable NLS support by default
 877 AC_ARG_ENABLE(nls,
 878   [  --enable-nls            use Native Language Support (default)],
 879   , enable_nls=yes)
 880
 881 # if cross compiling, disable NLS support.
 882 # It's not worth the trouble, at least for now.
 883
 884 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
 885   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
 886   enable_nls=no
 887 fi
 888
 889 # if NLS is enabled, also enable check in po subdir
 890 if test $enable_nls = yes; then
 891   CHECK_PO=check-po
 892 else
 893   CHECK_PO=""
 894 fi
 895
 896 AC_SUBST(CHECK_PO)
 897
 898 AM_GNU_GETTEXT
 899 XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"
 900
 901 # Windows32 Registry support for specifying GCC installation paths.
 902 AC_ARG_ENABLE(win32-registry,
 903 [  --disable-win32-registry
 904                           Disable lookup of installation paths in the
 905                          Registry on Windows hosts.
 906   --enable-win32-registry Enable registry lookup (default).
 907   --enable-win32-registry=KEY
 908                           Use KEY instead of GCC version as the last portion
 909                          of the registry key.],,)
 910
 911 AC_MSG_CHECKING(whether windows registry support is requested)
 912 if test x$enable_win32_registry != xno; then
 913   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
 914 [Define to 1 if installation paths should be looked up in Windows32
 915    Registry. Ignored on non windows32 hosts.])
 916   AC_MSG_RESULT(yes)
 917 else
 918   AC_MSG_RESULT(no)
 919 fi
 920
 921 # Check if user specified a different registry key.
 922 case x${enable_win32_registry} in
 923 x | xyes)
 924   # default.
 925   gcc_cv_win32_registry_key="$VERSION"
 926   ;;
 927 xno)
 928   # no registry lookup.
 929   gcc_cv_win32_registry_key=''
 930   ;;
 931 *)
 932   # user-specified key.
 933   gcc_cv_win32_registry_key="$enable_win32_registry"
 934   ;;
 935 esac
 936
 937 if test x$enable_win32_registry != xno; then
 938   AC_MSG_CHECKING(registry key on windows hosts)
 939   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
 940         [Define to be the last portion of registry key on windows hosts.])
 941   AC_MSG_RESULT($gcc_cv_win32_registry_key)
 942 fi
 943
 944 # Get an absolute path to the GCC top-level source directory
 945 holddir=`pwd`
 946 cd $srcdir
 947 topdir=`pwd`
 948 cd $holddir
 949
 950 # Conditionalize the makefile for this host machine.
 951 # Make-host contains the concatenation of all host makefile fragments
 952 # [there can be more than one].  This file is built by configure.frag.
 953 host_overrides=Make-host
 954 dep_host_xmake_file=
 955 for f in .. ${host_xmake_file}
 956 do
 957         if test -f ${srcdir}/config/$f
 958         then
 959                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
 960         fi
 961 done
 962
 963 # Conditionalize the makefile for this target machine.
 964 # Make-target contains the concatenation of all host makefile fragments
 965 # [there can be more than one].  This file is built by configure.frag.
 966 target_overrides=Make-target
 967 dep_tmake_file=
 968 for f in .. ${tmake_file}
 969 do
 970         if test -f ${srcdir}/config/$f
 971         then
 972                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
 973         fi
 974 done
 975
 976 # If the host doesn't support symlinks, modify CC in
 977 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
 978 # Otherwise, we can use "CC=$(CC)".
 979 rm -f symtest.tem
 980 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
 981 then
 982         cc_set_by_configure="\$(CC)"
 983         quoted_cc_set_by_configure="\$(CC)"
 984         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
 985 else
 986         rm -f symtest.tem
 987         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
 988         then
 989                 symbolic_link="cp -p"
 990         else
 991                 symbolic_link="cp"
 992         fi
 993         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
 994         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
 995         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
 996 fi
 997 rm -f symtest.tem
 998
 999 out_object_file=`basename $out_file .c`.o
1000
1001 tm_file_list=
1002 for f in $tm_file; do
1003   case $f in
1004     ansidecl.h )
1005        tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1006     defaults.h )
1007        tm_file_list="${tm_file_list} $f" ;;
1008     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1009   esac
1010 done
1011
1012 tm_p_file_list=
1013 for f in $tm_p_file; do
1014     tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1015 done
1016
1017 host_xm_file_list=
1018 for f in $host_xm_file; do
1019   case $f in
1020     ansidecl.h )
1021        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1022     auto-host.h | defaults.h )
1023        host_xm_file_list="${host_xm_file_list} $f" ;;
1024     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1025   esac
1026 done
1027
1028 build_xm_file_list=
1029 for f in $build_xm_file; do
1030   case $f in
1031     ansidecl.h )
1032        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1033     auto-build.h | auto-host.h | defaults.h )
1034        build_xm_file_list="${build_xm_file_list} $f" ;;
1035     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1036   esac
1037 done
1038
1039 # Define macro CROSS_COMPILE in compilation
1040 # if this is a cross-compiler.
1041 # Also use all.cross instead of all.internal
1042 # and add cross-make to Makefile.
1043 cross_overrides="/dev/null"
1044 if test x$host != x$target
1045 then
1046         cross_defines="CROSS=-DCROSS_COMPILE"
1047         cross_overrides="${topdir}/cross-make"
1048 fi
1049
1050 # If this is a cross-compiler that does not
1051 # have its own set of headers then define
1052 # inhibit_libc
1053
1054 # If this is using newlib, then define inhibit_libc in
1055 # LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
1056 # libgcc.a, but that's OK because newlib should have its own version of
1057 # assert.h.
1058 inhibit_libc=
1059 if [test x$host != x$target] && [test x$with_headers = x]; then
1060        inhibit_libc=-Dinhibit_libc
1061 else
1062        if [test x$with_newlib = xyes]; then
1063                inhibit_libc=-Dinhibit_libc
1064        fi
1065 fi
1066 AC_SUBST(inhibit_libc)
1067
1068 # When building gcc with a cross-compiler, we need to fix a few things.
1069 # This must come after cross-make as we want all.build to override
1070 # all.cross.
1071 build_overrides="/dev/null"
1072 if test x$build != x$host
1073 then
1074         build_overrides="${topdir}/build-make"
1075 fi
1076
1077 # Expand extra_headers to include complete path.
1078 # This substitutes for lots of t-* files.
1079 extra_headers_list=
1080 if test "x$extra_headers" = x
1081 then true
1082 else
1083         # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1084         for file in $extra_headers;
1085         do
1086                 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1087         done
1088 fi
1089
1090 if test x$use_collect2 = xno; then
1091         use_collect2=
1092 fi
1093
1094 # Add a definition of USE_COLLECT2 if system wants one.
1095 # Also tell toplev.c what to do.
1096 # This substitutes for lots of t-* files.
1097 if test x$use_collect2 = x
1098 then
1099         will_use_collect2=
1100         maybe_use_collect2=
1101 else
1102         will_use_collect2="collect2"
1103         maybe_use_collect2="-DUSE_COLLECT2"
1104 fi
1105
1106 # If we have gas in the build tree, make a link to it.
1107 if test -f ../gas/Makefile; then
1108         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1109 fi
1110
1111 # If we have nm in the build tree, make a link to it.
1112 if test -f ../binutils/Makefile; then
1113         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1114 fi
1115
1116 # If we have ld in the build tree, make a link to it.
1117 if test -f ../ld/Makefile; then
1118 #       if test x$use_collect2 = x; then
1119 #               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
1120 #       else
1121                 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1122 #       fi
1123 fi
1124
1125 # Figure out what assembler we will be using.
1126 AC_MSG_CHECKING(what assembler to use)
1127 gcc_cv_as=
1128 gcc_cv_gas_major_version=
1129 gcc_cv_gas_minor_version=
1130 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1131 if test -x "$DEFAULT_ASSEMBLER"; then
1132         gcc_cv_as="$DEFAULT_ASSEMBLER"
1133 elif test -x "$AS"; then
1134         gcc_cv_as="$AS"
1135 elif test -x as$host_exeext; then
1136         # Build using assembler in the current directory.
1137         gcc_cv_as=./as$host_exeext
1138 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1139         # Single tree build which includes gas.
1140         for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1141         do
1142 changequote(,)dnl
1143                 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1144 changequote([,])dnl
1145                 if test x$gcc_cv_gas_version != x; then
1146                         break
1147                 fi
1148         done
1149 changequote(,)dnl
1150         gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1151         gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1152 changequote([,])dnl
1153 fi
1154
1155 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1156         # Native build.
1157         # Search the same directories that the installed compiler will
1158         # search.  Else we may find the wrong assembler and lose.  If we
1159         # do not find a suitable assembler binary, then try the user's
1160         # path.
1161         #
1162         # Also note we have to check MD_EXEC_PREFIX before checking the
1163         # user's path.  Unfortunately, there is no good way to get at the
1164         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1165         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1166         # to be fixed as part of the make/configure rewrite too.
1167
1168         if test "x$exec_prefix" = xNONE; then
1169                 if test "x$prefix" = xNONE; then
1170                         test_prefix=/usr/local
1171                 else
1172                         test_prefix=$prefix
1173                 fi
1174         else
1175                 test_prefix=$exec_prefix
1176         fi
1177
1178         # If the loop below does not find an assembler, then use whatever
1179         # one we can find in the users's path.
1180         # user's path.
1181         gcc_cv_as=as$host_exeext
1182
1183         test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1184                    $test_prefix/lib/gcc-lib/$target \
1185                    /usr/lib/gcc/$target/$gcc_version \
1186                    /usr/lib/gcc/$target \
1187                    $test_prefix/$target/bin/$target/$gcc_version \
1188                    $test_prefix/$target/bin \
1189                    /usr/libexec \
1190                    /usr/ccs/gcc \
1191                    /usr/ccs/bin \
1192                    /udk/usr/ccs/bin \
1193                    /bsd43/usr/lib/cmplrs/cc \
1194                    /usr/cross64/usr/bin \
1195                    /usr/lib/cmplrs/cc \
1196                    /sysv/usr/lib/cmplrs/cc \
1197                    /svr4/usr/lib/cmplrs/cc \
1198                    /usr/bin"
1199
1200         for dir in $test_dirs; do
1201                 if test -f $dir/as$host_exeext; then
1202                         gcc_cv_as=$dir/as$host_exeext
1203                         break;
1204                 fi
1205         done
1206 fi
1207 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1208   AC_MSG_RESULT("newly built gas")
1209 else
1210   AC_MSG_RESULT($gcc_cv_as)
1211 fi
1212
1213 # Figure out what nm we will be using.
1214 AC_MSG_CHECKING(what nm to use)
1215 if test -x nm$host_exeext; then
1216         gcc_cv_nm=./nm$host_exeext
1217 elif test x$host = x$target; then
1218         # Native build.
1219         gcc_cv_nm=nm$host_exeext
1220 fi
1221 AC_MSG_RESULT($gcc_cv_nm)
1222
1223 # Figure out what assembler alignment features are present.
1224 AC_MSG_CHECKING(assembler alignment features)
1225 gcc_cv_as_alignment_features=none
1226 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1227         # Gas version 2.6 and later support for .balign and .p2align.
1228         # bytes to skip when using .p2align.
1229         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1230                 gcc_cv_as_alignment_features=".balign and .p2align"
1231                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1232         fi
1233         # Gas version 2.8 and later support specifying the maximum
1234         # bytes to skip when using .p2align.
1235         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1236                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1237                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1238         fi
1239 elif test x$gcc_cv_as != x; then
1240         # Check if we have .balign and .p2align
1241         echo ".balign  4" > conftest.s
1242         echo ".p2align  2" >> conftest.s
1243         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1244                 gcc_cv_as_alignment_features=".balign and .p2align"
1245                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1246         fi
1247         rm -f conftest.s conftest.o
1248         # Check if specifying the maximum bytes to skip when
1249         # using .p2align is supported.
1250         echo ".p2align 4,,7" > conftest.s
1251         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1252                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1253                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1254         fi
1255         rm -f conftest.s conftest.o
1256 fi
1257 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1258
1259 AC_MSG_CHECKING(assembler subsection support)
1260 gcc_cv_as_subsections=no
1261 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1262   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1263     gcc_cv_as_subsections="working .subsection -1"
1264   fi
1265 elif test x$gcc_cv_as != x; then
1266         # Check if we have .subsection
1267         echo ".subsection 1" > conftest.s
1268         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1269                 gcc_cv_as_subsections=".subsection"
1270                 if test x$gcc_cv_nm != x; then
1271                         cat > conftest.s <<EOF
1272 conftest_label1: .word 0
1273 .subsection -1
1274 conftest_label2: .word 0
1275 .previous
1276 EOF
1277                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1278                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1279                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1280                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1281                                         :
1282                                 else
1283                                         gcc_cv_as_subsections="working .subsection -1"
1284                                 fi
1285                         fi
1286                 fi
1287         fi
1288         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1289 fi
1290 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1291         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1292 [Define if your assembler supports .subsection and .subsection -1 starts
1293    emitting at the beginning of your section.])
1294 fi
1295 AC_MSG_RESULT($gcc_cv_as_subsections)
1296
1297 AC_MSG_CHECKING(assembler weak support)
1298 gcc_cv_as_weak=no
1299 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1300   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1301     gcc_cv_as_weak="yes"
1302   fi
1303 elif test x$gcc_cv_as != x; then
1304         # Check if we have .weak
1305         echo "  .weak foobar" > conftest.s
1306         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1307                 gcc_cv_as_weak="yes"
1308         fi
1309         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1310 fi
1311 if test x"$gcc_cv_as_weak" = xyes; then
1312         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1313 fi
1314 AC_MSG_RESULT($gcc_cv_as_weak)
1315
1316 AC_MSG_CHECKING(assembler hidden support)
1317 gcc_cv_as_hidden=no
1318 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1319   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 10 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1320     gcc_cv_as_hidden="yes"
1321   fi
1322 elif test x$gcc_cv_as != x; then
1323         # Check if we have .hidden
1324         echo "  .hidden foobar" > conftest.s
1325         echo "foobar:" >> conftest.s
1326         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1327                 gcc_cv_as_hidden="yes"
1328         fi
1329         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1330 fi
1331 if test x"$gcc_cv_as_hidden" = xyes; then
1332         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1333                 [Define if your assembler supports .hidden.])
1334 fi
1335 AC_MSG_RESULT($gcc_cv_as_hidden)
1336
1337 AC_MSG_CHECKING(assembler leb128 support)
1338 gcc_cv_as_leb128=no
1339 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1340   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 11 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1341     gcc_cv_as_leb128="yes"
1342   fi
1343 elif test x$gcc_cv_as != x; then
1344         # Check if we have .[us]leb128, and support symbol arithmetic with it.
1345         cat > conftest.s <<EOF
1346         .data
1347         .uleb128 L2 - L1
1348 L1:
1349         .uleb128 1280
1350         .sleb128 -1010
1351 L2:
1352 EOF
1353         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1354                 gcc_cv_as_leb128="yes"
1355
1356                 # GAS versions before 2.11 do not support uleb128,
1357                 # despite appearing to.
1358                 # ??? There exists an elf-specific test that will crash
1359                 # the assembler.  Perhaps it's better to figure out whether
1360                 # arbitrary sections are supported and try the test.
1361                 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1362                 if echo "$as_ver" | grep GNU > /dev/null; then
1363                         as_ver=`echo $as_ver | sed -e 's/.* //'`
1364                         as_major=`echo $as_ver | sed 's/\..*//'`
1365 changequote(,)dnl
1366                         as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1367 changequote([,])dnl
1368                         if test $as_major -eq 2 -a $as_minor -lt 11; then
1369                                 gcc_cv_as_leb128="no"
1370                         fi
1371                 fi
1372         fi
1373         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1374 fi
1375 if test x"$gcc_cv_as_leb128" = xyes; then
1376         AC_DEFINE(HAVE_AS_LEB128, 1,
1377                 [Define if your assembler supports .uleb128.])
1378 fi
1379 AC_MSG_RESULT($gcc_cv_as_leb128)
1380
1381 case "$target" in
1382   sparc*-*-*)
1383     AC_CACHE_CHECK([assembler .register pseudo-op support],
1384         gcc_cv_as_register_pseudo_op, [
1385         gcc_cv_as_register_pseudo_op=unknown
1386         if test x$gcc_cv_as != x; then
1387             # Check if we have .register
1388             echo ".register %g2, #scratch" > conftest.s
1389             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1390                 gcc_cv_as_register_pseudo_op=yes
1391             else
1392                 gcc_cv_as_register_pseudo_op=no
1393             fi
1394             rm -f conftest.s conftest.o
1395         fi
1396     ])
1397     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1398         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1399                 [Define if your assembler supports .register.])
1400     fi
1401
1402     AC_CACHE_CHECK([assembler supports -relax],
1403         gcc_cv_as_relax_opt, [
1404         gcc_cv_as_relax_opt=unknown
1405         if test x$gcc_cv_as != x; then
1406             # Check if gas supports -relax
1407             echo ".text" > conftest.s
1408             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1409                 gcc_cv_as_relax_opt=yes
1410             else
1411                 gcc_cv_as_relax_opt=no
1412             fi
1413             rm -f conftest.s conftest.o
1414         fi
1415     ])
1416     if test "x$gcc_cv_as_relax_opt" = xyes; then
1417         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1418                 [Define if your assembler supports -relax option.])
1419     fi
1420
1421     case "$tm_file" in
1422     *64*)
1423         AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1424             gcc_cv_as_flags64, [
1425                 if test -n "$gcc_cv_as"; then
1426                     echo ".xword foo" > conftest.s
1427                     gcc_cv_as_flags64=no
1428                     for flag in "-xarch=v9" "-64 -Av9"; do
1429                         if $gcc_cv_as $flag -o conftest.o conftest.s \
1430                             > /dev/null 2>&1; then
1431                             gcc_cv_as_flags64=$flag
1432                             break
1433                         fi
1434                     done
1435                     rm -f conftest.s conftest.o
1436                 else
1437                     if test "$gas" = yes; then
1438                         gcc_cv_as_flags64="-64 -Av9"
1439                     else
1440                         gcc_cv_as_flags64="-xarch=v9"
1441                     fi
1442                 fi
1443         ])
1444         if test "x$gcc_cv_as_flags64" = xno; then
1445 changequote(, )
1446             tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1447             dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1448 changequote([, ])
1449         else
1450             AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1451                         [Define if the assembler supports 64bit sparc.])
1452         fi
1453         ;;
1454     *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1455         ;;
1456     esac
1457
1458     if test "x$gcc_cv_as_flags64" != xno; then
1459         AC_CACHE_CHECK([for assembler offsetable %lo() support],
1460             gcc_cv_as_offsetable_lo10, [
1461             gcc_cv_as_offsetable_lo10=unknown
1462             if test "x$gcc_cv_as" != x; then
1463                 # Check if assembler has offsetable %lo()
1464                 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1465                 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1466                 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1467                         > /dev/null 2>&1 &&
1468                    $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1469                         > /dev/null 2>&1; then
1470                     if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1471                         gcc_cv_as_offsetable_lo10=no
1472                     else
1473                         gcc_cv_as_offsetable_lo10=yes
1474                     fi
1475                 else
1476                     gcc_cv_as_offsetable_lo10=no
1477                 fi
1478                 rm -f conftest.s conftest.o conftest1.s conftest1.o
1479             fi
1480         ])
1481         if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1482             AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1483                 [Define if your assembler supports offsetable %lo().])
1484         fi
1485     fi
1486     ;;
1487
1488 changequote(,)dnl
1489   i[34567]86-*-*)
1490 changequote([,])dnl
1491     AC_MSG_CHECKING(assembler instructions)
1492     gcc_cv_as_instructions=
1493     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1494       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1495         gcc_cv_as_instructions="filds fists"
1496       fi
1497     elif test x$gcc_cv_as != x; then
1498         set "filds fists" "filds mem; fists mem"
1499         while test $# -gt 0
1500         do
1501                 echo "$2" > conftest.s
1502                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1503                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1504                 fi
1505                 shift 2
1506         done
1507         rm -f conftest.s conftest.o
1508     fi
1509     if test x"$gcc_cv_as_instructions" != x; then
1510         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1511     fi
1512     AC_MSG_RESULT($gcc_cv_as_instructions)
1513     ;;
1514 esac
1515
1516 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
1517 gcc_cv_as_dwarf2_debug_line=no
1518 # ??? Not all targets support dwarf2 debug_line, even within a version
1519 # of gas.  Moreover, we need to emit a valid instruction to trigger any
1520 # info to the output file.  So, as supported targets are added to gas 2.11,
1521 # add some instruction here to (also) show we expect this might work.
1522 # ??? Once 2.11 is released, probably need to add first known working
1523 # version to the per-target configury.
1524 case "$target" in
1525   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-*)
1526     insn="nop"
1527     ;;
1528   ia64*-*-*)
1529     insn="nop 0"
1530     ;;
1531   esac
1532 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
1533 then
1534   if test "$gcc_cv_gas_major_version" -eq 2 \
1535         -a "$gcc_cv_gas_minor_version" -ge 11 \
1536         -o "$gcc_cv_gas_major_version" -gt 2 \
1537      && grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1538      && test x"$insn" != x ; then
1539     gcc_cv_as_dwarf2_debug_line="yes"
1540   fi
1541 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
1542         echo '  .file 1 "conftest.s"' > conftest.s
1543         echo '  .loc 1 3 0' >> conftest.s
1544         echo "  $insn" >> conftest.s
1545         # ??? This fails with non-gnu grep.
1546         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1547            && grep debug_line conftest.o > /dev/null 2>&1 ; then
1548                 # The .debug_line file table must be in the exact order that
1549                 # we specified the files, since these indicies are also used
1550                 # by DW_AT_decl_file.  Approximate this test by testing if
1551                 # the assembler bitches if the same index is assigned twice.
1552                 echo '  .file 1 "foo.s"' > conftest.s
1553                 echo '  .file 1 "bar.s"' >> conftest.s
1554                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1
1555                 then
1556                   gcc_cv_as_dwarf2_debug_line="no"
1557                 else
1558                   gcc_cv_as_dwarf2_debug_line="yes"
1559                 fi
1560         fi
1561         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1562 fi
1563 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
1564         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
1565 [Define if your assembler supports dwarf2 .file/.loc directives,
1566    and preserves file table indicies exactly as given.])
1567 fi
1568 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
1569
1570 # Figure out what language subdirectories are present.
1571 # Look if the user specified --enable-languages="..."; if not, use
1572 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1573 # go away some day.
1574 if test x"${enable_languages+set}" != xset; then
1575         if test x"${LANGUAGES+set}" = xset; then
1576                 enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
1577         else
1578                 enable_languages=all
1579         fi
1580 else
1581         if test x"${enable_languages}" = x; then
1582                 AC_MSG_ERROR([--enable-languages needs at least one argument])
1583         fi
1584 fi
1585
1586 # First scan to see if an enabled language requires some other language.
1587 # We assume that a given config-lang.in will list all the language
1588 # front ends it requires, even if some are required indirectly.
1589 for lang in ${srcdir}/*/config-lang.in ..
1590 do
1591    case $lang in
1592     ..)
1593        ;;
1594     # The odd quoting in the next line works around
1595     # an apparent bug in bash 1.12 on linux.
1596 changequote(,)dnl
1597     ${srcdir}/[*]/config-lang.in)
1598        ;;
1599     *)
1600        lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^      ]*\).*$,\1,p' $lang`
1601        this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^    ]*\).*$,\1,p' $lang`
1602        for other in $this_lang_requires
1603        do
1604           case ,${enable_languages}, in
1605            *,$other,*)
1606               ;;
1607            *,all,*)
1608               ;;
1609            *,$lang_alias,*)
1610               enable_languages="$enable_languages,$other"
1611               ;;
1612           esac
1613        done
1614        ;;
1615 changequote([,])dnl
1616    esac
1617 done
1618
1619 subdirs=
1620 for lang in ${srcdir}/*/config-lang.in ..
1621 do
1622         case $lang in
1623         ..) ;;
1624         # The odd quoting in the next line works around
1625         # an apparent bug in bash 1.12 on linux.
1626 changequote(,)dnl
1627         ${srcdir}/[*]/config-lang.in) ;;
1628         *)
1629           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
1630           this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^         ]*\).*$,\1,p' $lang`
1631           build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^     ]*\).*$,\1,p' $lang`
1632           if test "x$lang_alias" = x
1633           then
1634                 echo "$lang doesn't set \$language." 1>&2
1635                 exit 1
1636           fi
1637           case ${build_by_default},${enable_languages}, in
1638           *,$lang_alias,*) add_this_lang=yes ;;
1639           no,*) add_this_lang=no ;;
1640           *,all,*) add_this_lang=yes ;;
1641           *) add_this_lang=no ;;
1642           esac
1643           if test x"${add_this_lang}" = xyes; then
1644                 case $lang in
1645                     ${srcdir}/ada/config-lang.in)
1646                         if test x$have_gnat = xyes ; then
1647                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1648                         fi
1649                         ;;
1650                     *)
1651                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1652                         ;;
1653                 esac
1654           fi
1655           ;;
1656 changequote([,])dnl
1657         esac
1658 done
1659
1660 # Make gthr-default.h if we have a thread file.
1661 gthread_flags=
1662 if test $thread_file != single; then
1663     rm -f gthr-default.h
1664     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1665     gthread_flags=-DHAVE_GTHR_DEFAULT
1666 fi
1667 AC_SUBST(gthread_flags)
1668
1669 # Find out what GC implementation we want, or may, use.
1670 AC_ARG_WITH(gc,
1671 [  --with-gc={simple,page} Choose the garbage collection mechanism to use
1672                            with the compiler.],
1673 [case "$withval" in
1674   simple | page)
1675     GGC=ggc-$withval
1676     ;;
1677   *)
1678     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1679     ;;
1680 esac],
1681 [GGC=ggc-page])
1682 AC_SUBST(GGC)
1683 echo "Using $GGC for garbage collection."
1684
1685 # Use the system's zlib library.
1686 zlibdir=-L../zlib
1687 zlibinc="-I\$(srcdir)/../zlib"
1688 AC_ARG_WITH(system-zlib,
1689 [  --with-system-zlib      use installed libz],
1690 zlibdir=
1691 zlibinc=
1692 )
1693 AC_SUBST(zlibdir)
1694 AC_SUBST(zlibinc)
1695
1696 dnl Very limited version of automake's enable-maintainer-mode
1697
1698 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1699   dnl maintainer-mode is disabled by default
1700   AC_ARG_ENABLE(maintainer-mode,
1701 [  --enable-maintainer-mode enable make rules and dependencies not useful
1702                           (and sometimes confusing) to the casual installer],
1703       maintainer_mode=$enableval,
1704       maintainer_mode=no)
1705
1706 AC_MSG_RESULT($maintainer_mode)
1707
1708 if test "$maintainer_mode" = "yes"; then
1709   MAINT=''
1710 else
1711   MAINT='#'
1712 fi
1713 AC_SUBST(MAINT)dnl
1714
1715 # With Setjmp/Longjmp based exception handling.
1716 AC_ARG_ENABLE(sjlj-exceptions,
1717 [  --enable-sjlj-exceptions arrange to use setjmp/longjmp exception handling.],
1718 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1719 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1720   [Define 0/1 to force the choice for exception handling model.])])
1721
1722 # Make empty files to contain the specs and options for each language.
1723 # Then add #include lines to for a compiler that has specs and/or options.
1724
1725 lang_specs_files=
1726 lang_options_files=
1727 lang_tree_files=
1728 rm -f specs.h options.h gencheck.h
1729 touch specs.h options.h gencheck.h
1730 for subdir in . $subdirs
1731 do
1732         if test -f $srcdir/$subdir/lang-specs.h; then
1733                 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1734                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1735         fi
1736         if test -f $srcdir/$subdir/lang-options.h; then
1737                 echo "#include \"$subdir/lang-options.h\"" >>options.h
1738                 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1739         fi
1740         if test -f $srcdir/$subdir/$subdir-tree.def; then
1741                 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1742                 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1743         fi
1744 done
1745
1746 # These (without "all_") are set in each config-lang.in.
1747 # `language' must be a single word so is spelled singularly.
1748 all_languages=
1749 all_boot_languages=
1750 all_compilers=
1751 all_stagestuff=
1752 all_diff_excludes=
1753 all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug mklibgcc'
1754 # List of language makefile fragments.
1755 all_lang_makefiles=
1756 all_headers=
1757 all_lib2funcs=
1758
1759 # Add the language fragments.
1760 # Languages are added via two mechanisms.  Some information must be
1761 # recorded in makefile variables, these are defined in config-lang.in.
1762 # We accumulate them and plug them into the main Makefile.
1763 # The other mechanism is a set of hooks for each of the main targets
1764 # like `clean', `install', etc.
1765
1766 language_fragments="Make-lang"
1767 language_hooks="Make-hooks"
1768
1769 for s in .. $subdirs
1770 do
1771         if test $s != ".."
1772         then
1773                 language=
1774                 boot_language=
1775                 compilers=
1776                 stagestuff=
1777                 diff_excludes=
1778                 headers=
1779                 outputs=
1780                 lib2funcs=
1781                 . ${srcdir}/$s/config-lang.in
1782                 if test "x$language" = x
1783                 then
1784                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1785                         exit 1
1786                 fi
1787                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1788                 if test -f ${srcdir}/$s/Makefile.in
1789                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1790                 fi
1791                 all_languages="$all_languages $language"
1792                 if test "x$boot_language" = xyes
1793                 then
1794                         all_boot_languages="$all_boot_languages $language"
1795                 fi
1796                 all_compilers="$all_compilers $compilers"
1797                 all_stagestuff="$all_stagestuff $stagestuff"
1798                 all_diff_excludes="$all_diff_excludes $diff_excludes"
1799                 all_headers="$all_headers $headers"
1800                 all_outputs="$all_outputs $outputs"
1801                 all_lib2funcs="$all_lib2funcs $lib2funcs"
1802         fi
1803 done
1804
1805 check_languages=
1806 for language in .. $all_languages
1807 do
1808         if test $language != ".."
1809         then
1810                 check_languages="$check_languages check-$language"
1811         fi
1812 done
1813
1814 # Since we can't use `::' targets, we link each language in
1815 # with a set of hooks, reached indirectly via lang.${target}.
1816
1817 rm -f Make-hooks
1818 touch Make-hooks
1819 target_list="all.build all.cross start.encap rest.encap \
1820         info dvi \
1821         install-normal install-common install-info install-man \
1822         uninstall \
1823         mostlyclean clean distclean extraclean maintainer-clean \
1824         stage1 stage2 stage3 stage4"
1825 for t in $target_list
1826 do
1827         x=
1828         for lang in .. $all_languages
1829         do
1830                 if test $lang != ".."; then
1831                         x="$x $lang.$t"
1832                 fi
1833         done
1834         echo "lang.$t: $x" >> Make-hooks
1835 done
1836
1837 # Create .gdbinit.
1838
1839 echo "dir ." > .gdbinit
1840 echo "dir ${srcdir}" >> .gdbinit
1841 if test x$gdb_needs_out_file_path = xyes
1842 then
1843         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
1844 fi
1845 if test "x$subdirs" != x; then
1846         for s in $subdirs
1847         do
1848                 echo "dir ${srcdir}/$s" >> .gdbinit
1849         done
1850 fi
1851 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
1852
1853 # Define variables host_canonical and build_canonical
1854 # because some Cygnus local changes in the Makefile depend on them.
1855 build_canonical=${build}
1856 host_canonical=${host}
1857 target_subdir=
1858 if test "${host}" != "${target}" ; then
1859     target_subdir=${target_alias}/
1860 fi
1861 AC_SUBST(build_canonical)
1862 AC_SUBST(host_canonical)
1863 AC_SUBST(target_subdir)
1864
1865 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
1866 # absolute path for gcc_tooldir based on inserting the number of up-directory
1867 # movements required to get from $(exec_prefix) to $(prefix) into the basic
1868 # $(libsubdir)/@(unlibsubdir) based path.
1869 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
1870 # make and thus we'd get different behavior depending on where we built the
1871 # sources.
1872 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
1873     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
1874 else
1875 changequote(<<, >>)dnl
1876 # An explanation of the sed strings:
1877 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
1878 #  -e 's|/$||'            match a trailing forward slash and eliminates it
1879 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
1880 #  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
1881 #
1882 # (*) Note this pattern overwrites the first character of the string
1883 # with a forward slash if one is not already present.  This is not a
1884 # problem because the exact names of the sub-directories concerned is
1885 # unimportant, just the number of them matters.
1886 #
1887 # The practical upshot of these patterns is like this:
1888 #
1889 #  prefix     exec_prefix        result
1890 #  ------     -----------        ------
1891 #   /foo        /foo/bar          ../
1892 #   /foo/       /foo/bar          ../
1893 #   /foo        /foo/bar/         ../
1894 #   /foo/       /foo/bar/         ../
1895 #   /foo        /foo/bar/ugg      ../../
1896 #
1897     dollar='$$'
1898     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
1899 changequote([, ])dnl
1900 fi
1901 AC_SUBST(gcc_tooldir)
1902 AC_SUBST(dollar)
1903
1904 # Find a directory in which to install a shared libgcc.
1905
1906 AC_ARG_ENABLE(version-specific-runtime-libs,
1907 [  --enable-version-specific-runtime-libs    Specify that runtime libraries shou
1908 ld be installed in a compiler-specific directory ])
1909
1910 AC_ARG_WITH(slibdir,
1911 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
1912 slibdir="$with_slibdir",
1913 if test "${enable_version_specific_runtime_libs+set}" = set; then
1914   slibdir='$(libsubdir)'
1915 elif test "$host" != "$target"; then
1916   slibdir='$(build_tooldir)/lib'
1917 else
1918   slibdir='$(libdir)'
1919 fi)
1920 AC_SUBST(slibdir)
1921
1922 # Nothing to do for FLOAT_H, float_format already handled.
1923 objdir=`pwd`
1924 AC_SUBST(objdir)
1925
1926 # Process the language and host/target makefile fragments.
1927 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
1928
1929 # Substitute configuration variables
1930 AC_SUBST(subdirs)
1931 AC_SUBST(all_boot_languages)
1932 AC_SUBST(all_compilers)
1933 AC_SUBST(all_diff_excludes)
1934 AC_SUBST(all_headers)
1935 AC_SUBST(all_lang_makefiles)
1936 AC_SUBST(all_languages)
1937 AC_SUBST(all_lib2funcs)
1938 AC_SUBST(all_stagestuff)
1939 AC_SUBST(build_exeext)
1940 AC_SUBST(build_install_headers_dir)
1941 AC_SUBST(build_xm_file_list)
1942 AC_SUBST(build_xm_file)
1943 AC_SUBST(build_xm_defines)
1944 AC_SUBST(check_languages)
1945 AC_SUBST(cc_set_by_configure)
1946 AC_SUBST(quoted_cc_set_by_configure)
1947 AC_SUBST(cpp_install_dir)
1948 AC_SUBST(dep_host_xmake_file)
1949 AC_SUBST(dep_tmake_file)
1950 AC_SUBST(extra_c_flags)
1951 AC_SUBST(extra_headers_list)
1952 AC_SUBST(extra_objs)
1953 AC_SUBST(extra_parts)
1954 AC_SUBST(extra_passes)
1955 AC_SUBST(extra_programs)
1956 AC_SUBST(float_h_file)
1957 AC_SUBST(gcc_config_arguments)
1958 AC_SUBST(gcc_gxx_include_dir)
1959 AC_SUBST(libstdcxx_incdir)
1960 AC_SUBST(gcc_version)
1961 AC_SUBST(gcc_version_full)
1962 AC_SUBST(gcc_version_trigger)
1963 AC_SUBST(host_exeext)
1964 AC_SUBST(host_extra_gcc_objs)
1965 AC_SUBST(host_xm_file_list)
1966 AC_SUBST(host_xm_file)
1967 AC_SUBST(host_xm_defines)
1968 AC_SUBST(install)
1969 AC_SUBST(lang_options_files)
1970 AC_SUBST(lang_specs_files)
1971 AC_SUBST(lang_tree_files)
1972 AC_SUBST(local_prefix)
1973 AC_SUBST(maybe_use_collect2)
1974 AC_SUBST(md_file)
1975 AC_SUBST(objc_boehm_gc)
1976 AC_SUBST(out_file)
1977 AC_SUBST(out_object_file)
1978 AC_SUBST(stage_prefix_set_by_configure)
1979 AC_SUBST(symbolic_link)
1980 AC_SUBST(thread_file)
1981 AC_SUBST(tm_file_list)
1982 AC_SUBST(tm_file)
1983 AC_SUBST(tm_p_file_list)
1984 AC_SUBST(tm_p_file)
1985 AC_SUBST(xm_file)
1986 AC_SUBST(xm_defines)
1987 AC_SUBST(will_use_collect2)
1988 AC_SUBST(c_target_objs)
1989 AC_SUBST(cxx_target_objs)
1990 AC_SUBST(target_cpu_default)
1991
1992 AC_SUBST_FILE(target_overrides)
1993 AC_SUBST_FILE(host_overrides)
1994 AC_SUBST(cross_defines)
1995 AC_SUBST_FILE(cross_overrides)
1996 AC_SUBST_FILE(build_overrides)
1997 AC_SUBST_FILE(language_fragments)
1998 AC_SUBST_FILE(language_hooks)
1999
2000 # Echo that links are built
2001 if test x$host = x$target
2002 then
2003         str1="native "
2004 else
2005         str1="cross-"
2006         str2=" from $host"
2007 fi
2008
2009 if test x$host != x$build
2010 then
2011         str3=" on a $build system"
2012 fi
2013
2014 if test "x$str2" != x || test "x$str3" != x
2015 then
2016         str4=
2017 fi
2018
2019 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
2020
2021 if test "x$str2" != x || test "x$str3" != x
2022 then
2023         echo " ${str2}${str3}." 1>&2
2024 fi
2025
2026 # Truncate the target if necessary
2027 if test x$host_truncate_target != x; then
2028         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
2029 fi
2030
2031 # Configure the subdirectories
2032 # AC_CONFIG_SUBDIRS($subdirs)
2033
2034 # Create the Makefile
2035 # and configure language subdirectories
2036 AC_OUTPUT($all_outputs,
2037 [
2038 case x$CONFIG_HEADERS in
2039 xauto-host.h:config.in)
2040 echo > cstamp-h ;;
2041 esac
2042 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
2043 # bootstrapping and the installation procedure can still use
2044 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
2045 # FLAGS_TO_PASS has been modified to solve the problem there.
2046 # This is virtually a duplicate of what happens in configure.lang; we do
2047 # an extra check to make sure this only happens if ln -s can be used.
2048 if test "$symbolic_link" = "ln -s"; then
2049  for d in .. ${subdirs} ; do
2050    if test $d != ..; then
2051         STARTDIR=`pwd`
2052         cd $d
2053         for t in stage1 stage2 stage3 stage4 include
2054         do
2055                 rm -f $t
2056                 $symbolic_link ../$t $t 2>/dev/null
2057         done
2058         cd $STARTDIR
2059    fi
2060  done
2061 else true ; fi
2062 # Avoid having to add intl to our include paths.
2063 if test -f intl/libintl.h; then
2064   echo creating libintl.h
2065   echo '#include "intl/libintl.h"' >libintl.h
2066 fi
2067 ],
2068 [
2069 host='${host}'
2070 build='${build}'
2071 target='${target}'
2072 target_alias='${target_alias}'
2073 srcdir='${srcdir}'
2074 subdirs='${subdirs}'
2075 symbolic_link='${symbolic_link}'
2076 program_transform_set='${program_transform_set}'
2077 program_transform_name='${program_transform_name}'
2078 dep_host_xmake_file='${dep_host_xmake_file}'
2079 host_xmake_file='${host_xmake_file}'
2080 dep_tmake_file='${dep_tmake_file}'
2081 tmake_file='${tmake_file}'
2082 thread_file='${thread_file}'
2083 gcc_config_arguments='${gcc_config_arguments}'
2084 gcc_version='${gcc_version}'
2085 gcc_version_full='${gcc_version_full}'
2086 gcc_version_trigger='${gcc_version_trigger}'
2087 local_prefix='${local_prefix}'
2088 build_install_headers_dir='${build_install_headers_dir}'
2089 build_exeext='${build_exeext}'
2090 host_exeext='${host_exeext}'
2091 out_file='${out_file}'
2092 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
2093 SET_MAKE='${SET_MAKE}'
2094 target_list='${target_list}'
2095 target_overrides='${target_overrides}'
2096 host_overrides='${host_overrides}'
2097 cross_defines='${cross_defines}'
2098 cross_overrides='${cross_overrides}'
2099 build_overrides='${build_overrides}'
2100 cpp_install_dir='${cpp_install_dir}'
2101 ])