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$local_prefix = x; then
 151         local_prefix=/usr/local
 152 fi
 153
 154 # Build a new-libstdc++ system (ie libstdc++-v3)
 155 AC_MSG_CHECKING([for libstdc++ to install])
 156 AC_ARG_ENABLE(libstdcxx-v3,
 157 [  --enable-libstdcxx-v3
 158                           enable libstdc++-v3 for building and installation],
 159   [enable_libstdcxx_v3="$enableval"], [enable_libstdcxx_v3=yes])
 160
 161 if test x$enable_libstdcxx_v3 = xyes; then
 162   AC_MSG_RESULT(v3)
 163   HAVE_LIBSTDCXX_V3=1
 164   ac_esn=1
 165 else
 166   AC_MSG_RESULT(v2)
 167   HAVE_LIBSTDCXX_V3=0
 168   ac_esn=0
 169 fi
 170
 171 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 172 # passed in by the toplevel make and thus we'd get different behavior
 173 # depending on where we built the sources.
 174 gcc_gxx_include_dir=
 175 # Specify the g++ header file directory
 176 AC_ARG_WITH(gxx-include-dir,
 177 [  --with-gxx-include-dir=DIR
 178                           specifies directory to put g++ header files.],
 179 [case "${withval}" in
 180 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 181 no)     ;;
 182 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 183 esac])
 184
 185 if test x${gcc_gxx_include_dir} = x; then
 186   if test x${enable_version_specific_runtime_libs} = xyes; then
 187     gcc_gxx_include_dir='${libsubdir}/include/g++'
 188   else
 189     topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
 190 changequote(<<, >>)dnl
 191     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 192 changequote([, ])dnl
 193   fi
 194 fi
 195
 196 # Enable expensive internal checks
 197 AC_ARG_ENABLE(checking,
 198 [  --enable-checking[=LIST]
 199                           enable expensive run-time checks.  With LIST,
 200                           enable only specific categories of checks.
 201                           Categories are: misc,tree,rtl,gc,gcac; default
 202                           is misc,tree,gc],
 203 [ac_checking=
 204 ac_tree_checking=
 205 ac_rtl_checking=
 206 ac_gc_checking=
 207 ac_gc_always_collect=
 208 case "${enableval}" in
 209 yes)    ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;;
 210 no)     ;;
 211 *)      IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 212         set fnord $enableval; shift
 213         IFS="$ac_save_IFS"
 214         for check
 215         do
 216                 case $check in
 217                 misc)   ac_checking=1 ;;
 218                 tree)   ac_tree_checking=1 ;;
 219                 rtl)    ac_rtl_checking=1 ;;
 220                 gc)     ac_gc_checking=1 ;;
 221                 gcac)   ac_gc_always_collect=1 ;;
 222                 *)      AC_MSG_ERROR(unknown check category $check) ;;
 223                 esac
 224         done
 225         ;;
 226 esac
 227 ],
 228 # Enable some checks by default for development versions of GCC
 229 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1;])
 230 if test x$ac_checking != x ; then
 231   AC_DEFINE(ENABLE_CHECKING, 1,
 232 [Define if you want more run-time sanity checks.  This one gets a grab
 233    bag of miscellaneous but relatively cheap checks.])
 234 fi
 235 if test x$ac_tree_checking != x ; then
 236   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 237 [Define if you want all operations on trees (the basic data
 238    structure of the front ends) to be checked for dynamic type safety
 239    at runtime.  This is moderately expensive.])
 240 fi
 241 if test x$ac_rtl_checking != x ; then
 242   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 243 [Define if you want all operations on RTL (the basic data structure
 244    of the optimizer and back end) to be checked for dynamic type safety
 245    at runtime.  This is quite expensive.])
 246 fi
 247 if test x$ac_gc_checking != x ; then
 248   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 249 [Define if you want the garbage collector to do object poisoning and
 250    other memory allocation checks.  This is quite expensive.])
 251 fi
 252 if test x$ac_gc_always_collect != x ; then
 253   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 254 [Define if you want the garbage collector to operate in maximally
 255    paranoid mode, validating the entire heap and collecting garbage at
 256    every opportunity.  This is extremely expensive.])
 257 fi
 258
 259
 260 AC_ARG_ENABLE(cpp,
 261 [  --disable-cpp           don't provide a user-visible C preprocessor.],
 262 [], [enable_cpp=yes])
 263
 264 AC_ARG_WITH(cpp_install_dir,
 265 [  --with-cpp-install-dir=DIR
 266                           install the user visible C preprocessor in DIR
 267                           (relative to PREFIX) as well as PREFIX/bin.],
 268 [if test x$withval = xyes; then
 269   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 270 elif test x$withval != xno; then
 271   cpp_install_dir=$withval
 272 fi])
 273
 274 # Enable Multibyte Characters for C/C++
 275 AC_ARG_ENABLE(c-mbchar,
 276 [  --enable-c-mbchar       Enable multibyte characters for C and C++.],
 277 if test x$enable_c_mbchar != xno; then
 278   AC_DEFINE(MULTIBYTE_CHARS, 1,
 279   [Define if you want the C and C++ compilers to support multibyte
 280    character sets for source code.])
 281 fi)
 282
 283 # Enable threads
 284 # Pass with no value to take the default
 285 # Pass with a value to specify a thread package
 286 AC_ARG_ENABLE(threads,
 287 [  --enable-threads        enable thread usage for target GCC.
 288   --enable-threads=LIB    use LIB thread package for target GCC.],,
 289 enable_threads='')
 290
 291 enable_threads_flag=$enable_threads
 292 # Check if a valid thread package
 293 case x${enable_threads_flag} in
 294         x | xno)
 295                 # No threads
 296                 target_thread_file='single'
 297                 ;;
 298         xyes)
 299                 # default
 300                 target_thread_file=''
 301                 ;;
 302         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 303         xsolaris | xwin32 | xdce | xvxworks | xaix)
 304                 target_thread_file=$enable_threads_flag
 305                 ;;
 306         *)
 307                 echo "$enable_threads is an unknown thread package" 1>&2
 308                 exit 1
 309                 ;;
 310 esac
 311
 312 AC_ARG_ENABLE(objc-gc,
 313 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 314                           the GNU Objective-C runtime.],
 315 if test x$enable_objc_gc = xno; then
 316         objc_boehm_gc=''
 317 else
 318         objc_boehm_gc=1
 319 fi,
 320 objc_boehm_gc='')
 321
 322 AC_ARG_WITH(dwarf2,
 323 [  --with-dwarf2          force the default debug format to be DWARF2.],
 324 dwarf2="$with_dwarf2",
 325 dwarf2=no)
 326
 327 AC_ARG_ENABLE(shared,
 328 [  --disable-shared       don't provide a shared libgcc.],
 329 [], [enable_shared=yes])
 330 AC_SUBST(enable_shared)
 331
 332 # Determine the host, build, and target systems
 333 AC_CANONICAL_SYSTEM
 334
 335 # Find the native compiler
 336 AC_PROG_CC
 337 AC_PROG_CC_C_O
 338 # autoconf is lame and doesn't give us any substitution variable for this.
 339 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 340   NO_MINUS_C_MINUS_O=yes
 341 else
 342   OUTPUT_OPTION='-o $@'
 343 fi
 344 AC_SUBST(NO_MINUS_C_MINUS_O)
 345 AC_SUBST(OUTPUT_OPTION)
 346
 347 gcc_AC_C_LONG_DOUBLE
 348
 349 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 350 ac_cv_prog_cc_no_long_long,
 351 [save_CFLAGS="$CFLAGS"
 352 CFLAGS="-Wno-long-long"
 353 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 354                ac_cv_prog_cc_no_long_long=no)
 355 CFLAGS="$save_CFLAGS"])
 356 strict1_warn=
 357 if test $ac_cv_prog_cc_no_long_long = yes; then
 358   strict1_warn="-pedantic -Wno-long-long"
 359 fi
 360 AC_SUBST(strict1_warn)
 361
 362 # If the native compiler is GCC, we can enable warnings even in stage1.
 363 # That's useful for people building cross-compilers, or just running a
 364 # quick `make'.
 365 warn_cflags=
 366 if test "x$GCC" = "xyes"; then
 367   warn_cflags='$(GCC_WARN_CFLAGS)'
 368 fi
 369 AC_SUBST(warn_cflags)
 370
 371 # Stage specific cflags for build.
 372 stage1_cflags=
 373 case $build in
 374 vax-*-*)
 375   if test x$GCC = xyes
 376   then
 377     stage1_cflags="-Wa,-J"
 378   else
 379     stage1_cflags="-J"
 380   fi
 381   ;;
 382 esac
 383 AC_SUBST(stage1_cflags)
 384
 385 AC_PROG_MAKE_SET
 386
 387 AC_MSG_CHECKING([whether a default assembler was specified])
 388 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 389     if test x"$gas_flag" = x"no"; then
 390         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 391     else
 392         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 393     fi
 394 else
 395     AC_MSG_RESULT(no)
 396 fi
 397
 398 AC_MSG_CHECKING([whether a default linker was specified])
 399 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 400     if test x"$gnu_ld_flag" = x"no"; then
 401         AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 402     else
 403         AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 404     fi
 405 else
 406     AC_MSG_RESULT(no)
 407 fi
 408
 409 AC_MSG_CHECKING(for GNU C library)
 410 AC_CACHE_VAL(gcc_cv_glibc,
 411 [AC_TRY_COMPILE(
 412   [#include <features.h>],[
 413 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 414 #error Not a GNU C library system
 415 #endif],
 416   [gcc_cv_glibc=yes],
 417   gcc_cv_glibc=no)])
 418 AC_MSG_RESULT($gcc_cv_glibc)
 419 if test $gcc_cv_glibc = yes; then
 420   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 421 fi
 422
 423 AC_C_INLINE
 424
 425 # Find some useful tools
 426 AC_PROG_AWK
 427 gcc_AC_PROG_LN
 428 gcc_AC_PROG_LN_S
 429 gcc_AC_C_VOLATILE
 430 AC_PROG_RANLIB
 431 gcc_AC_PROG_INSTALL
 432
 433 AC_HEADER_STDC
 434 AC_HEADER_TIME
 435 gcc_AC_HEADER_STRING
 436 AC_HEADER_SYS_WAIT
 437 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 438                  fcntl.h unistd.h stab.h sys/file.h sys/time.h \
 439                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 440                  direct.h malloc.h langinfo.h iconv.h)
 441
 442 # Check for thread headers.
 443 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 444 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 445
 446 # See if GNAT has been installed
 447 AC_CHECK_PROG(gnat, gnatbind, yes, no)
 448
 449 # See if we have the mktemp command.
 450 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 451
 452 # Do we have a single-tree copy of texinfo?
 453 if test -f $srcdir/../texinfo/Makefile.in; then
 454   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 455   gcc_cv_prog_makeinfo_modern=yes
 456   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 457 else
 458   # See if makeinfo has been installed and is modern enough
 459   # that we can use it.
 460   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 461   [GNU texinfo.* \([0-9][0-9.]*\)],
 462   [4.*])
 463 fi
 464
 465 if test $gcc_cv_prog_makeinfo_modern = no; then
 466   AC_MSG_WARN([
 467 *** Makeinfo is missing or too old.
 468 *** Info documentation will not be built.])
 469   BUILD_INFO=
 470 else
 471   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 472 fi
 473
 474 # Is pod2man recent enough to regenerate manpages?
 475 AC_MSG_CHECKING([for recent Pod::Man])
 476 if perl -e 'use 1.10 Pod::Man' >/dev/null 2>&1; then
 477   AC_MSG_RESULT(yes)
 478   GENERATED_MANPAGES=generated-manpages         AC_SUBST(GENERATED_MANPAGES)
 479 else
 480   AC_MSG_RESULT(no)
 481   GENERATED_MANPAGES=
 482 fi
 483
 484 # How about lex?
 485 dnl Don't use AC_PROG_LEX; we insist on flex.
 486 dnl LEXLIB is not useful in gcc.
 487 if test -f $srcdir/../flex/skel.c; then
 488   FLEX='$(objdir)/../flex/flex'
 489 else
 490   AC_CHECK_PROG(FLEX, flex, flex, false)
 491 fi
 492
 493 # Bison?
 494 # The -L switch is so bison can find its skeleton file.
 495 if test -f $srcdir/../bison/bison.simple; then
 496   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 497 else
 498   AC_CHECK_PROG(BISON, bison, bison, false)
 499 fi
 500
 501 # See if the stage1 system preprocessor understands the ANSI C
 502 # preprocessor stringification operator.
 503 AC_C_STRINGIZE
 504
 505 # Use <inttypes.h> only if it exists,
 506 # doesn't clash with <sys/types.h>, and declares intmax_t.
 507 AC_MSG_CHECKING(for inttypes.h)
 508 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 509 [AC_TRY_COMPILE(
 510   [#include <sys/types.h>
 511 #include <inttypes.h>],
 512   [intmax_t i = -1;],
 513   [gcc_cv_header_inttypes_h=yes],
 514   gcc_cv_header_inttypes_h=no)])
 515 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 516 if test $gcc_cv_header_inttypes_h = yes; then
 517   AC_DEFINE(HAVE_INTTYPES_H, 1,
 518         [Define if you have a working <inttypes.h> header file.])
 519 fi
 520
 521 #
 522 # Determine if enumerated bitfields are unsigned.   ISO C says they can
 523 # be either signed or unsigned.
 524 #
 525 AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 526 [AC_TRY_RUN(#include <stdlib.h>
 527 enum t { BLAH = 128 } ;
 528 struct s_t { enum t member : 8; } s ;
 529 int main(void)
 530 {
 531         s.member = BLAH;
 532         if (s.member < 0) exit(1);
 533         exit(0);
 534
 535 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 536 if test $gcc_cv_enum_bf_unsigned = yes; then
 537   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 538     [Define if enumerated bitfields are treated as unsigned values.])
 539 fi
 540
 541 AC_CHECK_FUNCS(strtoul bsearch putenv popen bcopy \
 542         strchr strrchr kill getrlimit setrlimit atoll atoq \
 543         sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 544         fputs_unlocked getrusage valloc iconv nl_langinfo)
 545
 546 AC_CHECK_TYPE(ssize_t, int)
 547
 548 # Try to determine the array type of the second argument of getgroups
 549 # for the target system (int or gid_t).
 550 AC_TYPE_GETGROUPS
 551 if test "${target}" = "${build}"; then
 552   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 553 else
 554   case "${target}" in
 555         # This condition may need some tweaking.  It should include all
 556         # targets where the array type of the second argument of getgroups
 557         # is int and the type of gid_t is not equivalent to int.
 558         *-*-sunos* | *-*-ultrix*)
 559                 TARGET_GETGROUPS_T=int
 560                 ;;
 561         *)
 562                 TARGET_GETGROUPS_T=gid_t
 563                 ;;
 564   esac
 565 fi
 566 AC_SUBST(TARGET_GETGROUPS_T)
 567
 568 gcc_AC_FUNC_VFPRINTF_DOPRNT
 569 gcc_AC_FUNC_PRINTF_PTR
 570
 571 case "${host}" in
 572 *-*-uwin*)
 573   # Under some versions of uwin, vfork is notoriously buggy and the test
 574   # can hang configure; on other versions, vfork exists just as a stub.
 575   # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 576   ac_cv_func_vfork_works=no
 577   ;;
 578 esac
 579 AC_FUNC_VFORK
 580 AC_FUNC_MMAP_ANYWHERE
 581 AC_FUNC_MMAP_FILE
 582
 583 # We will need to find libiberty.h and ansidecl.h
 584 saved_CFLAGS="$CFLAGS"
 585 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 586 gcc_AC_CHECK_DECLS(bcopy \
 587         getenv atol sbrk abort atof getcwd getwd \
 588         strsignal putc_unlocked fputs_unlocked strstr environ \
 589         malloc realloc calloc free basename getopt, , ,[
 590 #include "gansidecl.h"
 591 #include "system.h"])
 592
 593 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 594 #include "gansidecl.h"
 595 #include "system.h"
 596 #ifdef HAVE_SYS_RESOURCE_H
 597 #include <sys/resource.h>
 598 #endif
 599 ])
 600
 601 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 602 CFLAGS="$saved_CFLAGS"
 603
 604 # mkdir takes a single argument on some systems.
 605 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 606
 607 # File extensions
 608 manext='.1'
 609 objext='.o'
 610 AC_SUBST(manext)
 611 AC_SUBST(objext)
 612
 613 build_xm_file=
 614 build_xm_defines=
 615 build_install_headers_dir=install-headers-tar
 616 build_exeext=
 617 host_xm_file=
 618 host_xm_defines=
 619 host_xmake_file=
 620 host_truncate_target=
 621 host_exeext=
 622
 623 # Decode the host machine, then the target machine.
 624 # For the host machine, we save the xm_file variable as host_xm_file;
 625 # then we decode the target machine and forget everything else
 626 # that came from the host machine.
 627 for machine in $build $host $target; do
 628         . ${srcdir}/config.gcc
 629 done
 630
 631 extra_objs="${host_extra_objs} ${extra_objs}"
 632
 633 # Default the target-machine variables that were not explicitly set.
 634 if test x"$tm_file" = x
 635 then tm_file=$cpu_type/$cpu_type.h; fi
 636
 637 if test x"$extra_headers" = x
 638 then extra_headers=; fi
 639
 640 if test x"$xm_file" = x
 641 then xm_file=$cpu_type/xm-$cpu_type.h; fi
 642
 643 if test x$md_file = x
 644 then md_file=$cpu_type/$cpu_type.md; fi
 645
 646 if test x$out_file = x
 647 then out_file=$cpu_type/$cpu_type.c; fi
 648
 649 if test x"$tmake_file" = x
 650 then tmake_file=$cpu_type/t-$cpu_type
 651 fi
 652
 653 if test x"$dwarf2" = xyes
 654 then tm_file="$tm_file tm-dwarf2.h"
 655 fi
 656
 657 if test x$float_format = x
 658 then float_format=i64
 659 fi
 660
 661 if test $float_format = none
 662 then float_h_file=Makefile.in
 663 else float_h_file=float-$float_format.h
 664 fi
 665
 666 # Handle cpp installation.
 667 if test x$enable_cpp != xno
 668 then
 669   tmake_file="$tmake_file t-install-cpp"
 670 fi
 671
 672 # Say what files are being used for the output code and MD file.
 673 echo "Using \`$srcdir/config/$out_file' to output insns."
 674 echo "Using \`$srcdir/config/$md_file' as machine description file."
 675
 676 count=a
 677 for f in $tm_file; do
 678         count=${count}x
 679 done
 680 if test $count = ax; then
 681         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
 682 else
 683         echo "Using the following target machine macro files:"
 684         for f in $tm_file; do
 685                 echo "  $srcdir/config/$f"
 686         done
 687 fi
 688
 689 count=a
 690 for f in $host_xm_file; do
 691         count=${count}x
 692 done
 693 if test $count = ax; then
 694         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
 695 else
 696         echo "Using the following host machine macro files:"
 697         for f in $host_xm_file; do
 698                 echo "  $srcdir/config/$f"
 699         done
 700 fi
 701
 702 if test "$host_xm_file" != "$build_xm_file"; then
 703         count=a
 704         for f in $build_xm_file; do
 705                 count=${count}x
 706         done
 707         if test $count = ax; then
 708                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
 709         else
 710                 echo "Using the following build machine macro files:"
 711                 for f in $build_xm_file; do
 712                         echo "  $srcdir/config/$f"
 713                 done
 714         fi
 715 fi
 716
 717 if test x$thread_file = x; then
 718         if test x$target_thread_file != x; then
 719                 thread_file=$target_thread_file
 720         else
 721                 thread_file='single'
 722         fi
 723 fi
 724
 725 # Set up the header files.
 726 # $links is the list of header files to create.
 727 # $vars is the list of shell variables with file names to include.
 728 # auto-host.h is the file containing items generated by autoconf and is
 729 # the first file included by config.h.
 730 null_defines=
 731 host_xm_file="auto-host.h gansidecl.h ${host_xm_file} hwint.h"
 732
 733 # If host=build, it is correct to have hconfig include auto-host.h
 734 # as well.  If host!=build, we are in error and need to do more
 735 # work to find out the build config parameters.
 736 if test x$host = x$build
 737 then
 738         build_xm_file="auto-host.h gansidecl.h ${build_xm_file} hwint.h"
 739 else
 740         # We create a subdir, then run autoconf in the subdir.
 741         # To prevent recursion we set host and build for the new
 742         # invocation of configure to the build for this invocation
 743         # of configure.
 744         tempdir=build.$$
 745         rm -rf $tempdir
 746         mkdir $tempdir
 747         cd $tempdir
 748         case ${srcdir} in
 749         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
 750         *) realsrcdir=../${srcdir};;
 751         esac
 752         CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
 753                 --target=$target --host=$build --build=$build
 754
 755         # We just finished tests for the build machine, so rename
 756         # the file auto-build.h in the gcc directory.
 757         mv auto-host.h ../auto-build.h
 758         cd ..
 759         rm -rf $tempdir
 760         build_xm_file="auto-build.h gansidecl.h ${build_xm_file} hwint.h"
 761 fi
 762
 763 xm_file="gansidecl.h ${xm_file}"
 764 tm_file="gansidecl.h ${tm_file}"
 765
 766 vars="host_xm_file tm_file tm_p_file xm_file build_xm_file"
 767 links="config.h tm.h tm_p.h tconfig.h hconfig.h"
 768 defines="host_xm_defines null_defines null_defines xm_defines build_xm_defines"
 769
 770 rm -f config.bak
 771 if test -f config.status; then mv -f config.status config.bak; fi
 772
 773 # Make the links.
 774 while test -n "$vars"
 775 do
 776         set $vars; var=$1; shift; vars=$*
 777         set $links; link=$1; shift; links=$*
 778         set $defines; define=$1; shift; defines=$*
 779
 780         rm -f $link
 781         # Make sure the file is created, even if it is empty.
 782         echo >$link
 783
 784         # Define TARGET_CPU_DEFAULT if the system wants one.
 785         # This substitutes for lots of *.h files.
 786         if test "$target_cpu_default" != "" -a $link = tm.h
 787         then
 788                 echo "#define TARGET_CPU_DEFAULT ($target_cpu_default)" >>$link
 789         fi
 790
 791         for file in `eval echo '$'$var`; do
 792                 case $file in
 793                 auto-host.h | auto-build.h )
 794                         ;;
 795                 *)
 796                         echo '#ifdef IN_GCC' >>$link
 797                         ;;
 798                 esac
 799                 echo "#include \"$file\"" >>$link
 800                 case $file in
 801                 auto-host.h | auto-build.h )
 802                         ;;
 803                 *)
 804                         echo '#endif' >>$link
 805                         ;;
 806                 esac
 807         done
 808
 809         for def in `eval echo '$'$define`; do
 810                 echo "#ifndef $def" >>$link
 811                 echo "#define $def" >>$link
 812                 echo "#endif" >>$link
 813         done
 814
 815         if test $link = tm.h
 816         then
 817                 # Include insn-codes.h last, because it includes machmode.h,
 818                 # and we want EXTRA_CC_MODES to be taken into account.
 819                 echo "#ifndef GENERATOR_FILE" >>$link
 820                 echo "#include \"insn-codes.h\"" >>$link
 821                 echo "#endif" >>$link
 822         fi
 823 done
 824
 825 # Truncate the target if necessary
 826 if test x$host_truncate_target != x; then
 827         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
 828 fi
 829
 830 # Get the version trigger filename from the toplevel
 831 if test "${with_gcc_version_trigger+set}" = set; then
 832         gcc_version_trigger=$with_gcc_version_trigger
 833 else
 834         gcc_version_trigger=${srcdir}/version.c
 835 fi
 836 changequote(,)dnl
 837 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 838 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 839
 840 # Compile in configure arguments.
 841 if test -f configargs.h ; then
 842         # Being re-configured.
 843         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 844         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
 845 else
 846         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
 847 fi
 848 cat > configargs.h <<EOF
 849 /* Generated automatically. */
 850 static const char configuration_arguments[] = "$gcc_config_arguments";
 851 EOF
 852 changequote([,])dnl
 853
 854 # Internationalization
 855 PACKAGE=gcc
 856 VERSION="$gcc_version"
 857 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
 858         [Define to the name of the distribution.])
 859 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
 860         [Define to the version of the distribution.])
 861 AC_SUBST(PACKAGE)
 862 AC_SUBST(VERSION)
 863
 864 ALL_LINGUAS="sv"
 865
 866 # Enable NLS support by default
 867 AC_ARG_ENABLE(nls,
 868   [  --enable-nls            use Native Language Support (default)],
 869   , enable_nls=yes)
 870
 871 # if cross compiling, disable NLS support.
 872 # It's not worth the trouble, at least for now.
 873
 874 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
 875   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
 876   enable_nls=no
 877 fi
 878
 879 # if NLS is enabled, also enable check in po subdir
 880 if test $enable_nls = yes; then
 881   CHECK_PO=check-po
 882 else
 883   CHECK_PO=""
 884 fi
 885
 886 AC_SUBST(CHECK_PO)
 887
 888 AM_GNU_GETTEXT
 889 XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"
 890
 891 # Windows32 Registry support for specifying GCC installation paths.
 892 AC_ARG_ENABLE(win32-registry,
 893 [  --disable-win32-registry
 894                           Disable lookup of installation paths in the
 895                          Registry on Windows hosts.
 896   --enable-win32-registry Enable registry lookup (default).
 897   --enable-win32-registry=KEY
 898                           Use KEY instead of GCC version as the last portion
 899                          of the registry key.],,)
 900
 901 AC_MSG_CHECKING(whether windows registry support is requested)
 902 if test x$enable_win32_registry != xno; then
 903   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
 904 [Define to 1 if installation paths should be looked up in Windows32
 905    Registry. Ignored on non windows32 hosts.])
 906   AC_MSG_RESULT(yes)
 907 else
 908   AC_MSG_RESULT(no)
 909 fi
 910
 911 # Check if user specified a different registry key.
 912 case x${enable_win32_registry} in
 913 x | xyes)
 914   # default.
 915   gcc_cv_win32_registry_key="$VERSION"
 916   ;;
 917 xno)
 918   # no registry lookup.
 919   gcc_cv_win32_registry_key=''
 920   ;;
 921 *)
 922   # user-specified key.
 923   gcc_cv_win32_registry_key="$enable_win32_registry"
 924   ;;
 925 esac
 926
 927 if test x$enable_win32_registry != xno; then
 928   AC_MSG_CHECKING(registry key on windows hosts)
 929   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
 930         [Define to be the last portion of registry key on windows hosts.])
 931   AC_MSG_RESULT($gcc_cv_win32_registry_key)
 932 fi
 933
 934 # Get an absolute path to the GCC top-level source directory
 935 holddir=`pwd`
 936 cd $srcdir
 937 topdir=`pwd`
 938 cd $holddir
 939
 940 # Conditionalize the makefile for this host machine.
 941 # Make-host contains the concatenation of all host makefile fragments
 942 # [there can be more than one].  This file is built by configure.frag.
 943 host_overrides=Make-host
 944 dep_host_xmake_file=
 945 for f in .. ${host_xmake_file}
 946 do
 947         if test -f ${srcdir}/config/$f
 948         then
 949                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
 950         fi
 951 done
 952
 953 # Conditionalize the makefile for this target machine.
 954 # Make-target contains the concatenation of all host makefile fragments
 955 # [there can be more than one].  This file is built by configure.frag.
 956 target_overrides=Make-target
 957 dep_tmake_file=
 958 for f in .. ${tmake_file}
 959 do
 960         if test -f ${srcdir}/config/$f
 961         then
 962                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
 963         fi
 964 done
 965
 966 # If the host doesn't support symlinks, modify CC in
 967 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
 968 # Otherwise, we can use "CC=$(CC)".
 969 rm -f symtest.tem
 970 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
 971 then
 972         cc_set_by_configure="\$(CC)"
 973         quoted_cc_set_by_configure="\$(CC)"
 974         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
 975 else
 976         rm -f symtest.tem
 977         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
 978         then
 979                 symbolic_link="cp -p"
 980         else
 981                 symbolic_link="cp"
 982         fi
 983         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
 984         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
 985         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
 986 fi
 987 rm -f symtest.tem
 988
 989 out_object_file=`basename $out_file .c`.o
 990
 991 tm_file_list=
 992 for f in $tm_file; do
 993   case $f in
 994     gansidecl.h )
 995        tm_file_list="${tm_file_list} $f" ;;
 996     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
 997   esac
 998 done
 999
1000 host_xm_file_list=
1001 for f in $host_xm_file; do
1002   case $f in
1003     auto-host.h | gansidecl.h | hwint.h )
1004        host_xm_file_list="${host_xm_file_list} $f" ;;
1005     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1006   esac
1007 done
1008
1009 build_xm_file_list=
1010 for f in $build_xm_file; do
1011   case $f in
1012     auto-build.h | auto-host.h | gansidecl.h | hwint.h )
1013        build_xm_file_list="${build_xm_file_list} $f" ;;
1014     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1015   esac
1016 done
1017
1018 # Define macro CROSS_COMPILE in compilation
1019 # if this is a cross-compiler.
1020 # Also use all.cross instead of all.internal
1021 # and add cross-make to Makefile.
1022 cross_overrides="/dev/null"
1023 if test x$host != x$target
1024 then
1025         cross_defines="CROSS=-DCROSS_COMPILE"
1026         cross_overrides="${topdir}/cross-make"
1027 fi
1028
1029 # If this is a cross-compiler that does not
1030 # have its own set of headers then define
1031 # inhibit_libc
1032
1033 # If this is using newlib, then define inhibit_libc in
1034 # LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
1035 # libgcc.a, but that's OK because newlib should have its own version of
1036 # assert.h.
1037 inhibit_libc=
1038 if [test x$host != x$target] && [test x$with_headers = x]; then
1039        inhibit_libc=-Dinhibit_libc
1040 else
1041        if [test x$with_newlib = xyes]; then
1042                inhibit_libc=-Dinhibit_libc
1043        fi
1044 fi
1045 AC_SUBST(inhibit_libc)
1046
1047 # When building gcc with a cross-compiler, we need to fix a few things.
1048 # This must come after cross-make as we want all.build to override
1049 # all.cross.
1050 build_overrides="/dev/null"
1051 if test x$build != x$host
1052 then
1053         build_overrides="${topdir}/build-make"
1054 fi
1055
1056 # Expand extra_headers to include complete path.
1057 # This substitutes for lots of t-* files.
1058 extra_headers_list=
1059 if test "x$extra_headers" = x
1060 then true
1061 else
1062         # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1063         for file in $extra_headers;
1064         do
1065                 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1066         done
1067 fi
1068
1069 if test x$use_collect2 = xno; then
1070         use_collect2=
1071 fi
1072
1073 # Add a definition of USE_COLLECT2 if system wants one.
1074 # Also tell toplev.c what to do.
1075 # This substitutes for lots of t-* files.
1076 if test x$use_collect2 = x
1077 then
1078         will_use_collect2=
1079         maybe_use_collect2=
1080 else
1081         will_use_collect2="collect2"
1082         maybe_use_collect2="-DUSE_COLLECT2"
1083 fi
1084
1085 # If we have gas in the build tree, make a link to it.
1086 if test -f ../gas/Makefile; then
1087         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1088 fi
1089
1090 # If we have nm in the build tree, make a link to it.
1091 if test -f ../binutils/Makefile; then
1092         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1093 fi
1094
1095 # If we have ld in the build tree, make a link to it.
1096 if test -f ../ld/Makefile; then
1097 #       if test x$use_collect2 = x; then
1098 #               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
1099 #       else
1100                 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1101 #       fi
1102 fi
1103
1104 # Figure out what assembler we will be using.
1105 AC_MSG_CHECKING(what assembler to use)
1106 gcc_cv_as=
1107 gcc_cv_gas_major_version=
1108 gcc_cv_gas_minor_version=
1109 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1110 if test -x "$DEFAULT_ASSEMBLER"; then
1111         gcc_cv_as="$DEFAULT_ASSEMBLER"
1112 elif test -x "$AS"; then
1113         gcc_cv_as="$AS"
1114 elif test -x as$host_exeext; then
1115         # Build using assembler in the current directory.
1116         gcc_cv_as=./as$host_exeext
1117 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1118         # Single tree build which includes gas.
1119         for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1120         do
1121 changequote(,)dnl
1122                 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1123 changequote([,])dnl
1124                 if test x$gcc_cv_gas_version != x; then
1125                         break
1126                 fi
1127         done
1128 changequote(,)dnl
1129         gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1130         gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1131 changequote([,])dnl
1132 fi
1133
1134 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1135         # Native build.
1136         # Search the same directories that the installed compiler will
1137         # search.  Else we may find the wrong assembler and lose.  If we
1138         # do not find a suitable assembler binary, then try the user's
1139         # path.
1140         #
1141         # Also note we have to check MD_EXEC_PREFIX before checking the
1142         # user's path.  Unfortunately, there is no good way to get at the
1143         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1144         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1145         # to be fixed as part of the make/configure rewrite too.
1146
1147         if test "x$exec_prefix" = xNONE; then
1148                 if test "x$prefix" = xNONE; then
1149                         test_prefix=/usr/local
1150                 else
1151                         test_prefix=$prefix
1152                 fi
1153         else
1154                 test_prefix=$exec_prefix
1155         fi
1156
1157         # If the loop below does not find an assembler, then use whatever
1158         # one we can find in the users's path.
1159         # user's path.
1160         as=as$host_exeext
1161
1162         test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1163                    $test_prefix/lib/gcc-lib/$target \
1164                    /usr/lib/gcc/$target/$gcc_version \
1165                    /usr/lib/gcc/$target \
1166                    $test_prefix/$target/bin/$target/$gcc_version \
1167                    $test_prefix/$target/bin \
1168                    /usr/libexec \
1169                    /usr/ccs/gcc \
1170                    /usr/ccs/bin \
1171                    /udk/usr/ccs/bin \
1172                    /bsd43/usr/lib/cmplrs/cc \
1173                    /usr/cross64/usr/bin \
1174                    /usr/lib/cmplrs/cc \
1175                    /sysv/usr/lib/cmplrs/cc \
1176                    /svr4/usr/lib/cmplrs/cc \
1177                    /usr/bin"
1178
1179         for dir in $test_dirs; do
1180                 if test -f $dir/as$host_exeext; then
1181                         gcc_cv_as=$dir/as$host_exeext
1182                         break;
1183                 fi
1184         done
1185 fi
1186 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1187   AC_MSG_RESULT("newly built gas")
1188 else
1189   AC_MSG_RESULT($gcc_cv_as)
1190 fi
1191
1192 # Figure out what nm we will be using.
1193 AC_MSG_CHECKING(what nm to use)
1194 if test -x nm$host_exeext; then
1195         gcc_cv_nm=./nm$host_exeext
1196 elif test x$host = x$target; then
1197         # Native build.
1198         gcc_cv_nm=nm$host_exeext
1199 fi
1200 AC_MSG_RESULT($gcc_cv_nm)
1201
1202 # Figure out what assembler alignment features are present.
1203 AC_MSG_CHECKING(assembler alignment features)
1204 gcc_cv_as_alignment_features=none
1205 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1206         # Gas version 2.6 and later support for .balign and .p2align.
1207         # bytes to skip when using .p2align.
1208         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1209                 gcc_cv_as_alignment_features=".balign and .p2align"
1210                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1211         fi
1212         # Gas version 2.8 and later support specifying the maximum
1213         # bytes to skip when using .p2align.
1214         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1215                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1216                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1217         fi
1218 elif test x$gcc_cv_as != x; then
1219         # Check if we have .balign and .p2align
1220         echo ".balign  4" > conftest.s
1221         echo ".p2align  2" >> conftest.s
1222         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1223                 gcc_cv_as_alignment_features=".balign and .p2align"
1224                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1225         fi
1226         rm -f conftest.s conftest.o
1227         # Check if specifying the maximum bytes to skip when
1228         # using .p2align is supported.
1229         echo ".p2align 4,,7" > conftest.s
1230         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1231                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1232                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1233         fi
1234         rm -f conftest.s conftest.o
1235 fi
1236 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1237
1238 AC_MSG_CHECKING(assembler subsection support)
1239 gcc_cv_as_subsections=no
1240 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1241   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1242     gcc_cv_as_subsections="working .subsection -1"
1243   fi
1244 elif test x$gcc_cv_as != x; then
1245         # Check if we have .subsection
1246         echo ".subsection 1" > conftest.s
1247         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1248                 gcc_cv_as_subsections=".subsection"
1249                 if test x$gcc_cv_nm != x; then
1250                         cat > conftest.s <<EOF
1251 conftest_label1: .word 0
1252 .subsection -1
1253 conftest_label2: .word 0
1254 .previous
1255 EOF
1256                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1257                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1258                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1259                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1260                                         :
1261                                 else
1262                                         gcc_cv_as_subsections="working .subsection -1"
1263                                 fi
1264                         fi
1265                 fi
1266         fi
1267         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1268 fi
1269 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1270         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1271 [Define if your assembler supports .subsection and .subsection -1 starts
1272    emitting at the beginning of your section.])
1273 fi
1274 AC_MSG_RESULT($gcc_cv_as_subsections)
1275
1276 AC_MSG_CHECKING(assembler weak support)
1277 gcc_cv_as_weak=no
1278 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1279   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1280     gcc_cv_as_weak="yes"
1281   fi
1282 elif test x$gcc_cv_as != x; then
1283         # Check if we have .weak
1284         echo "  .weak foobar" > conftest.s
1285         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1286                 gcc_cv_as_weak="yes"
1287         fi
1288         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1289 fi
1290 if test x"$gcc_cv_as_weak" = xyes; then
1291         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1292 fi
1293 AC_MSG_RESULT($gcc_cv_as_weak)
1294
1295 AC_MSG_CHECKING(assembler hidden support)
1296 gcc_cv_as_hidden=no
1297 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1298   if test "$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
1299     gcc_cv_as_hidden="yes"
1300   fi
1301 elif test x$gcc_cv_as != x; then
1302         # Check if we have .hidden
1303         echo "  .hidden foobar" > conftest.s
1304         echo "foobar:" >> conftest.s
1305         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1306                 gcc_cv_as_hidden="yes"
1307         fi
1308         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1309 fi
1310 if test x"$gcc_cv_as_hidden" = xyes; then
1311         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1312                 [Define if your assembler supports .hidden.])
1313 fi
1314 AC_MSG_RESULT($gcc_cv_as_hidden)
1315
1316 case "$target" in
1317   sparc*-*-*)
1318     AC_CACHE_CHECK([assembler .register pseudo-op support],
1319         gcc_cv_as_register_pseudo_op, [
1320         gcc_cv_as_register_pseudo_op=unknown
1321         if test x$gcc_cv_as != x; then
1322             # Check if we have .register
1323             echo ".register %g2, #scratch" > conftest.s
1324             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1325                 gcc_cv_as_register_pseudo_op=yes
1326             else
1327                 gcc_cv_as_register_pseudo_op=no
1328             fi
1329             rm -f conftest.s conftest.o
1330         fi
1331     ])
1332     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1333         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1334                 [Define if your assembler supports .register.])
1335     fi
1336
1337     AC_CACHE_CHECK([assembler supports -relax],
1338         gcc_cv_as_relax_opt, [
1339         gcc_cv_as_relax_opt=unknown
1340         if test x$gcc_cv_as != x; then
1341             # Check if gas supports -relax
1342             echo ".text" > conftest.s
1343             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1344                 gcc_cv_as_relax_opt=yes
1345             else
1346                 gcc_cv_as_relax_opt=no
1347             fi
1348             rm -f conftest.s conftest.o
1349         fi
1350     ])
1351     if test "x$gcc_cv_as_relax_opt" = xyes; then
1352         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1353                 [Define if your assembler supports -relax option.])
1354     fi
1355
1356     case "$tm_file" in
1357     *64*)
1358         AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1359             gcc_cv_as_flags64, [
1360                 if test -n "$gcc_cv_as"; then
1361                     echo ".xword foo" > conftest.s
1362                     gcc_cv_as_flags64=no
1363                     for flag in "-xarch=v9" "-64 -Av9"; do
1364                         if $gcc_cv_as $flag -o conftest.o conftest.s \
1365                             > /dev/null 2>&1; then
1366                             gcc_cv_as_flags64=$flag
1367                             break
1368                         fi
1369                     done
1370                     rm -f conftest.s conftest.o
1371                 else
1372                     if test "$gas" = yes; then
1373                         gcc_cv_as_flags64="-64 -Av9"
1374                     else
1375                         gcc_cv_as_flags64="-xarch=v9"
1376                     fi
1377                 fi
1378         ])
1379         if test "x$gcc_cv_as_flags64" = xno; then
1380 changequote(, )
1381             tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1382             dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1383 changequote([, ])
1384         else
1385             AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1386                         [Define if the assembler supports 64bit sparc.])
1387         fi
1388         ;;
1389     *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1390         ;;
1391     esac
1392
1393     if test "x$gcc_cv_as_flags64" != xno; then
1394         AC_CACHE_CHECK([for assembler offsetable %lo() support],
1395             gcc_cv_as_offsetable_lo10, [
1396             gcc_cv_as_offsetable_lo10=unknown
1397             if test "x$gcc_cv_as" != x; then
1398                 # Check if assembler has offsetable %lo()
1399                 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1400                 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1401                 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1402                         > /dev/null 2>&1 &&
1403                    $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1404                         > /dev/null 2>&1; then
1405                     if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1406                         gcc_cv_as_offsetable_lo10=no
1407                     else
1408                         gcc_cv_as_offsetable_lo10=yes
1409                     fi
1410                 else
1411                     gcc_cv_as_offsetable_lo10=no
1412                 fi
1413                 rm -f conftest.s conftest.o conftest1.s conftest1.o
1414             fi
1415         ])
1416         if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1417             AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1418                 [Define if your assembler supports offsetable %lo().])
1419         fi
1420     fi
1421     ;;
1422
1423 changequote(,)dnl
1424   i[34567]86-*-*)
1425 changequote([,])dnl
1426     AC_MSG_CHECKING(assembler instructions)
1427     gcc_cv_as_instructions=
1428     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1429       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1430         gcc_cv_as_instructions="filds fists"
1431       fi
1432     elif test x$gcc_cv_as != x; then
1433         set "filds fists" "filds mem; fists mem"
1434         while test $# -gt 0
1435         do
1436                 echo "$2" > conftest.s
1437                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1438                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1439                 fi
1440                 shift 2
1441         done
1442         rm -f conftest.s conftest.o
1443     fi
1444     if test x"$gcc_cv_as_instructions" != x; then
1445         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1446     fi
1447     AC_MSG_RESULT($gcc_cv_as_instructions)
1448     ;;
1449 esac
1450
1451 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
1452 gcc_cv_as_dwarf2_debug_line=no
1453 # ??? Not all targets support dwarf2 debug_line, even within a version
1454 # of gas.  Moreover, we need to emit a valid instruction to trigger any
1455 # info to the output file.  So, as supported targets are added to gas 2.11,
1456 # add some instruction here to (also) show we expect this might work.
1457 # ??? Once 2.11 is released, probably need to add first known working
1458 # version to the per-target configury.
1459 case "$target" in
1460   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-*)
1461     insn="nop"
1462     ;;
1463   ia64*-*-*)
1464     insn="nop 0"
1465     ;;
1466   esac
1467 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
1468 then
1469   if test "$gcc_cv_gas_major_version" -eq 2 \
1470         -a "$gcc_cv_gas_minor_version" -ge 11 \
1471         -o "$gcc_cv_gas_major_version" -gt 2 \
1472      && grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1473      && test x"$insn" != x ; then
1474     gcc_cv_as_dwarf2_debug_line="yes"
1475   fi
1476 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
1477         echo '  .file 0 "conftest.s"' > conftest.s
1478         echo '  .loc 0 3 0' >> conftest.s
1479         echo "  $insn" >> conftest.s
1480         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1481            && grep debug_line conftest.o > /dev/null 2>&1 ; then
1482                 gcc_cv_as_dwarf2_debug_line="yes"
1483         fi
1484         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1485 fi
1486 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
1487         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
1488           [Define if your assembler supports dwarf2 .file/.loc directives.])
1489 fi
1490 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
1491
1492 # Figure out what language subdirectories are present.
1493 # Look if the user specified --enable-languages="..."; if not, use
1494 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1495 # go away some day.
1496 if test x"${enable_languages+set}" != xset; then
1497         if test x"${LANGUAGES+set}" = xset; then
1498                 enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
1499         else
1500                 enable_languages=all
1501         fi
1502 else
1503         if test x"${enable_languages}" = x; then
1504                 AC_MSG_ERROR([--enable-languages needs at least one argument])
1505         fi
1506 fi
1507 subdirs=
1508 for lang in ${srcdir}/*/config-lang.in ..
1509 do
1510         case $lang in
1511         ..) ;;
1512         # The odd quoting in the next line works around
1513         # an apparent bug in bash 1.12 on linux.
1514 changequote(,)dnl
1515         ${srcdir}/[*]/config-lang.in) ;;
1516         *)
1517           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
1518           this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^         ]*\).*$,\1,p' $lang`
1519           build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^     ]*\).*$,\1,p' $lang`
1520           if test "x$lang_alias" = x
1521           then
1522                 echo "$lang doesn't set \$language." 1>&2
1523                 exit 1
1524           fi
1525           case ${build_by_default},${enable_languages}, in
1526           *,$lang_alias,*) add_this_lang=yes ;;
1527           no,*) add_this_lang=no ;;
1528           *,all,*) add_this_lang=yes ;;
1529           *) add_this_lang=no ;;
1530           esac
1531           if test x"${add_this_lang}" = xyes; then
1532                 case $lang in
1533                     ${srcdir}/ada/config-lang.in)
1534                         if test x$gnat = xyes ; then
1535                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1536                         fi
1537                         ;;
1538                     *)
1539                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1540                         ;;
1541                 esac
1542           fi
1543           ;;
1544 changequote([,])dnl
1545         esac
1546 done
1547
1548 # Make gthr-default.h if we have a thread file.
1549 gthread_flags=
1550 if test $thread_file != single; then
1551     rm -f gthr-default.h
1552     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1553     gthread_flags=-DHAVE_GTHR_DEFAULT
1554 fi
1555 AC_SUBST(gthread_flags)
1556
1557 # Find out what GC implementation we want, or may, use.
1558 AC_ARG_WITH(gc,
1559 [  --with-gc={simple,page} Choose the garbage collection mechanism to use
1560                            with the compiler.],
1561 [case "$withval" in
1562   simple | page)
1563     GGC=ggc-$withval
1564     ;;
1565   *)
1566     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1567     ;;
1568 esac],
1569 [if test $ac_cv_func_mmap_anywhere = yes \
1570     || test $ac_cv_func_valloc = yes; then
1571   GGC=ggc-page
1572 else
1573   GGC=ggc-simple
1574 fi])
1575 AC_SUBST(GGC)
1576 echo "Using $GGC for garbage collection."
1577
1578 # Use the system's zlib library.
1579 zlibdir=-L../zlib
1580 zlibinc="-I\$(srcdir)/../zlib"
1581 AC_ARG_WITH(system-zlib,
1582 [  --with-system-zlib      use installed libz],
1583 zlibdir=
1584 zlibinc=
1585 )
1586 AC_SUBST(zlibdir)
1587 AC_SUBST(zlibinc)
1588
1589 # Build a new-abi (c++) system
1590 AC_ARG_ENABLE(new-gxx-abi,
1591 [  --enable-new-gxx-abi
1592                           select the new abi for g++. You must select an ABI
1593                           at configuration time, so that the correct runtime
1594                           support is built. You cannot mix ABIs.],
1595    ,
1596   enable_new_gxx_abi=yes)
1597
1598 if test x$enable_new_gxx_abi = xyes; then
1599   AC_DEFINE(ENABLE_NEW_GXX_ABI, 1,
1600             [Define if you want to always select the new-abi for g++.])
1601   GXX_ABI_FLAG='-fnew-abi'
1602 else
1603   GXX_ABI_FLAG=
1604 fi
1605 AC_SUBST(GXX_ABI_FLAG)
1606
1607 AC_DEFINE_UNQUOTED(ENABLE_STD_NAMESPACE, $ac_esn,
1608   [Define to 1 if you want to enable namespaces (-fhonor-std) by default.])
1609 AC_SUBST(HAVE_LIBSTDCXX_V3)
1610
1611 dnl Very limited version of automake's enable-maintainer-mode
1612
1613 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1614   dnl maintainer-mode is disabled by default
1615   AC_ARG_ENABLE(maintainer-mode,
1616 [  --enable-maintainer-mode enable make rules and dependencies not useful
1617                           (and sometimes confusing) to the casual installer],
1618       maintainer_mode=$enableval,
1619       maintainer_mode=no)
1620
1621 AC_MSG_RESULT($maintainer_mode)
1622
1623 if test "$maintainer_mode" = "yes"; then
1624   MAINT=''
1625 else
1626   MAINT='#'
1627 fi
1628 AC_SUBST(MAINT)dnl
1629
1630 # Make empty files to contain the specs and options for each language.
1631 # Then add #include lines to for a compiler that has specs and/or options.
1632
1633 lang_specs_files=
1634 lang_options_files=
1635 lang_tree_files=
1636 rm -f specs.h options.h gencheck.h
1637 touch specs.h options.h gencheck.h
1638 for subdir in . $subdirs
1639 do
1640         if test -f $srcdir/$subdir/lang-specs.h; then
1641                 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1642                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1643         fi
1644         if test -f $srcdir/$subdir/lang-options.h; then
1645                 echo "#include \"$subdir/lang-options.h\"" >>options.h
1646                 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1647         fi
1648         if test -f $srcdir/$subdir/$subdir-tree.def; then
1649                 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1650                 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1651         fi
1652 done
1653
1654 # These (without "all_") are set in each config-lang.in.
1655 # `language' must be a single word so is spelled singularly.
1656 all_languages=
1657 all_boot_languages=
1658 all_compilers=
1659 all_stagestuff=
1660 all_diff_excludes=
1661 all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug mklibgcc'
1662 # List of language makefile fragments.
1663 all_lang_makefiles=
1664 all_headers=
1665 all_lib2funcs=
1666
1667 # Add the language fragments.
1668 # Languages are added via two mechanisms.  Some information must be
1669 # recorded in makefile variables, these are defined in config-lang.in.
1670 # We accumulate them and plug them into the main Makefile.
1671 # The other mechanism is a set of hooks for each of the main targets
1672 # like `clean', `install', etc.
1673
1674 language_fragments="Make-lang"
1675 language_hooks="Make-hooks"
1676
1677 for s in .. $subdirs
1678 do
1679         if test $s != ".."
1680         then
1681                 language=
1682                 boot_language=
1683                 compilers=
1684                 stagestuff=
1685                 diff_excludes=
1686                 headers=
1687                 outputs=
1688                 lib2funcs=
1689                 . ${srcdir}/$s/config-lang.in
1690                 if test "x$language" = x
1691                 then
1692                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1693                         exit 1
1694                 fi
1695                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1696                 if test -f ${srcdir}/$s/Makefile.in
1697                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1698                 fi
1699                 all_languages="$all_languages $language"
1700                 if test "x$boot_language" = xyes
1701                 then
1702                         all_boot_languages="$all_boot_languages $language"
1703                 fi
1704                 all_compilers="$all_compilers $compilers"
1705                 all_stagestuff="$all_stagestuff $stagestuff"
1706                 all_diff_excludes="$all_diff_excludes $diff_excludes"
1707                 all_headers="$all_headers $headers"
1708                 all_outputs="$all_outputs $outputs"
1709                 all_lib2funcs="$all_lib2funcs $lib2funcs"
1710         fi
1711 done
1712
1713 # Since we can't use `::' targets, we link each language in
1714 # with a set of hooks, reached indirectly via lang.${target}.
1715
1716 rm -f Make-hooks
1717 touch Make-hooks
1718 target_list="all.build all.cross start.encap rest.encap \
1719         info dvi \
1720         install-normal install-common install-info install-man \
1721         uninstall \
1722         mostlyclean clean distclean extraclean maintainer-clean \
1723         stage1 stage2 stage3 stage4"
1724 for t in $target_list
1725 do
1726         x=
1727         for lang in .. $all_languages
1728         do
1729                 if test $lang != ".."; then
1730                         x="$x $lang.$t"
1731                 fi
1732         done
1733         echo "lang.$t: $x" >> Make-hooks
1734 done
1735
1736 # If we're not building in srcdir, create .gdbinit.
1737
1738 if test ! -f Makefile.in; then
1739         echo "dir ." > .gdbinit
1740         echo "dir ${srcdir}" >> .gdbinit
1741         if test x$gdb_needs_out_file_path = xyes
1742         then
1743                 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
1744         fi
1745         if test "x$subdirs" != x; then
1746                 for s in $subdirs
1747                 do
1748                         echo "dir ${srcdir}/$s" >> .gdbinit
1749                 done
1750         fi
1751         echo "source ${srcdir}/.gdbinit" >> .gdbinit
1752 fi
1753
1754 # Define variables host_canonical and build_canonical
1755 # because some Cygnus local changes in the Makefile depend on them.
1756 build_canonical=${build}
1757 host_canonical=${host}
1758 target_subdir=
1759 if test "${host}" != "${target}" ; then
1760     target_subdir=${target}/
1761 fi
1762 AC_SUBST(build_canonical)
1763 AC_SUBST(host_canonical)
1764 AC_SUBST(target_subdir)
1765
1766 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
1767 # absolute path for gcc_tooldir based on inserting the number of up-directory
1768 # movements required to get from $(exec_prefix) to $(prefix) into the basic
1769 # $(libsubdir)/@(unlibsubdir) based path.
1770 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
1771 # make and thus we'd get different behavior depending on where we built the
1772 # sources.
1773 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
1774     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
1775 else
1776 changequote(<<, >>)dnl
1777 # An explanation of the sed strings:
1778 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
1779 #  -e 's|/$||'            match a trailing forward slash and eliminates it
1780 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
1781 #  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
1782 #
1783 # (*) Note this pattern overwrites the first character of the string
1784 # with a forward slash if one is not already present.  This is not a
1785 # problem because the exact names of the sub-directories concerned is
1786 # unimportant, just the number of them matters.
1787 #
1788 # The practical upshot of these patterns is like this:
1789 #
1790 #  prefix     exec_prefix        result
1791 #  ------     -----------        ------
1792 #   /foo        /foo/bar          ../
1793 #   /foo/       /foo/bar          ../
1794 #   /foo        /foo/bar/         ../
1795 #   /foo/       /foo/bar/         ../
1796 #   /foo        /foo/bar/ugg      ../../
1797 #
1798     dollar='$$'
1799     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
1800 changequote([, ])dnl
1801 fi
1802 AC_SUBST(gcc_tooldir)
1803 AC_SUBST(dollar)
1804
1805 # Find a directory in which to install a shared libgcc.
1806
1807 AC_ARG_ENABLE(version-specific-runtime-libs,
1808 [  --enable-version-specific-runtime-libs    Specify that runtime libraries shou
1809 ld be installed in a compiler-specific directory ])
1810
1811 AC_ARG_WITH(slibdir,
1812 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
1813 slibdir="$with_slibdir",
1814 if test "${enable_version_specific_runtime_libs+set}" = set; then
1815   slibdir='$(libsubdir)'
1816 elif test "$host" != "$target"; then
1817   slibdir='$(build_tooldir)/lib'
1818 else
1819   slibdir='$(libdir)'
1820 fi)
1821 AC_SUBST(slibdir)
1822
1823 # Nothing to do for FLOAT_H, float_format already handled.
1824 objdir=`pwd`
1825 AC_SUBST(objdir)
1826
1827 # Process the language and host/target makefile fragments.
1828 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
1829
1830 # Substitute configuration variables
1831 AC_SUBST(subdirs)
1832 AC_SUBST(all_boot_languages)
1833 AC_SUBST(all_compilers)
1834 AC_SUBST(all_diff_excludes)
1835 AC_SUBST(all_headers)
1836 AC_SUBST(all_lang_makefiles)
1837 AC_SUBST(all_languages)
1838 AC_SUBST(all_lib2funcs)
1839 AC_SUBST(all_stagestuff)
1840 AC_SUBST(build_exeext)
1841 AC_SUBST(build_install_headers_dir)
1842 AC_SUBST(build_xm_file_list)
1843 AC_SUBST(cc_set_by_configure)
1844 AC_SUBST(quoted_cc_set_by_configure)
1845 AC_SUBST(cpp_install_dir)
1846 AC_SUBST(dep_host_xmake_file)
1847 AC_SUBST(dep_tmake_file)
1848 AC_SUBST(extra_c_flags)
1849 AC_SUBST(extra_headers_list)
1850 AC_SUBST(extra_objs)
1851 AC_SUBST(extra_parts)
1852 AC_SUBST(extra_passes)
1853 AC_SUBST(extra_programs)
1854 AC_SUBST(float_h_file)
1855 AC_SUBST(gcc_config_arguments)
1856 AC_SUBST(gcc_gxx_include_dir)
1857 AC_SUBST(libstdcxx_incdir)
1858 AC_SUBST(gcc_version)
1859 AC_SUBST(gcc_version_full)
1860 AC_SUBST(gcc_version_trigger)
1861 AC_SUBST(host_exeext)
1862 AC_SUBST(host_extra_gcc_objs)
1863 AC_SUBST(host_xm_file_list)
1864 AC_SUBST(install)
1865 AC_SUBST(lang_options_files)
1866 AC_SUBST(lang_specs_files)
1867 AC_SUBST(lang_tree_files)
1868 AC_SUBST(local_prefix)
1869 AC_SUBST(maybe_use_collect2)
1870 AC_SUBST(md_file)
1871 AC_SUBST(objc_boehm_gc)
1872 AC_SUBST(out_file)
1873 AC_SUBST(out_object_file)
1874 AC_SUBST(stage_prefix_set_by_configure)
1875 AC_SUBST(symbolic_link)
1876 AC_SUBST(thread_file)
1877 AC_SUBST(tm_file_list)
1878 AC_SUBST(will_use_collect2)
1879 AC_SUBST(c_target_objs)
1880 AC_SUBST(cxx_target_objs)
1881
1882
1883 AC_SUBST_FILE(target_overrides)
1884 AC_SUBST_FILE(host_overrides)
1885 AC_SUBST(cross_defines)
1886 AC_SUBST_FILE(cross_overrides)
1887 AC_SUBST_FILE(build_overrides)
1888 AC_SUBST_FILE(language_fragments)
1889 AC_SUBST_FILE(language_hooks)
1890
1891 # Echo that links are built
1892 if test x$host = x$target
1893 then
1894         str1="native "
1895 else
1896         str1="cross-"
1897         str2=" from $host"
1898 fi
1899
1900 if test x$host != x$build
1901 then
1902         str3=" on a $build system"
1903 fi
1904
1905 if test "x$str2" != x || test "x$str3" != x
1906 then
1907         str4=
1908 fi
1909
1910 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
1911
1912 if test "x$str2" != x || test "x$str3" != x
1913 then
1914         echo " ${str2}${str3}." 1>&2
1915 fi
1916
1917 # Truncate the target if necessary
1918 if test x$host_truncate_target != x; then
1919         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
1920 fi
1921
1922 # Configure the subdirectories
1923 # AC_CONFIG_SUBDIRS($subdirs)
1924
1925 # Create the Makefile
1926 # and configure language subdirectories
1927 AC_OUTPUT($all_outputs,
1928 [
1929 case x$CONFIG_HEADERS in
1930 xauto-host.h:config.in)
1931 echo > cstamp-h ;;
1932 esac
1933 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
1934 # bootstrapping and the installation procedure can still use
1935 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
1936 # FLAGS_TO_PASS has been modified to solve the problem there.
1937 # This is virtually a duplicate of what happens in configure.lang; we do
1938 # an extra check to make sure this only happens if ln -s can be used.
1939 if test "$symbolic_link" = "ln -s"; then
1940  for d in .. ${subdirs} ; do
1941    if test $d != ..; then
1942         STARTDIR=`pwd`
1943         cd $d
1944         for t in stage1 stage2 stage3 stage4 include
1945         do
1946                 rm -f $t
1947                 $symbolic_link ../$t $t 2>/dev/null
1948         done
1949         cd $STARTDIR
1950    fi
1951  done
1952 else true ; fi
1953 # Avoid having to add intl to our include paths.
1954 if test -f intl/libintl.h; then
1955   echo creating libintl.h
1956   echo '#include "intl/libintl.h"' >libintl.h
1957 fi
1958 ],
1959 [
1960 host='${host}'
1961 build='${build}'
1962 target='${target}'
1963 target_alias='${target_alias}'
1964 srcdir='${srcdir}'
1965 subdirs='${subdirs}'
1966 symbolic_link='${symbolic_link}'
1967 program_transform_set='${program_transform_set}'
1968 program_transform_name='${program_transform_name}'
1969 dep_host_xmake_file='${dep_host_xmake_file}'
1970 host_xmake_file='${host_xmake_file}'
1971 dep_tmake_file='${dep_tmake_file}'
1972 tmake_file='${tmake_file}'
1973 thread_file='${thread_file}'
1974 gcc_config_arguments='${gcc_config_arguments}'
1975 gcc_version='${gcc_version}'
1976 gcc_version_full='${gcc_version_full}'
1977 gcc_version_trigger='${gcc_version_trigger}'
1978 local_prefix='${local_prefix}'
1979 build_install_headers_dir='${build_install_headers_dir}'
1980 build_exeext='${build_exeext}'
1981 host_exeext='${host_exeext}'
1982 out_file='${out_file}'
1983 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
1984 SET_MAKE='${SET_MAKE}'
1985 target_list='${target_list}'
1986 target_overrides='${target_overrides}'
1987 host_overrides='${host_overrides}'
1988 cross_defines='${cross_defines}'
1989 cross_overrides='${cross_overrides}'
1990 build_overrides='${build_overrides}'
1991 cpp_install_dir='${cpp_install_dir}'
1992 ])