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 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}/.. . ${srcdir}/../config.if
 190 changequote(<<, >>)dnl
 191     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/g++"-${libstdcxx_interface}
 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=$withval
 272 fi])
 273
 274 # Link cpplib into the compiler proper, for C/C++/ObjC.  Defaults to on.
 275 maybe_cpplib=libcpp.a
 276 AC_ARG_ENABLE(c-cpplib,
 277 [  --enable-c-cpplib       link cpplib directly into C and C++ compilers
 278                            (HIGHLY EXPERIMENTAL).],
 279 [if test x$enable_c_cpplib != xyes; then
 280   maybe_cpplib=
 281 fi]
 282 )
 283 if test x$maybe_cpplib != x ; then
 284   AC_DEFINE(USE_CPPLIB, 1,
 285   [Define if you want the preprocessor merged into the C and C++ compilers.])
 286 fi
 287 AC_SUBST(maybe_cpplib)
 288
 289 # Enable Multibyte Characters for C/C++
 290 AC_ARG_ENABLE(c-mbchar,
 291 [  --enable-c-mbchar       Enable multibyte characters for C and C++.],
 292 if test x$enable_c_mbchar != xno; then
 293   AC_DEFINE(MULTIBYTE_CHARS, 1,
 294   [Define if you want the C and C++ compilers to support multibyte
 295    character sets for source code.])
 296 fi)
 297
 298 # Enable threads
 299 # Pass with no value to take the default
 300 # Pass with a value to specify a thread package
 301 AC_ARG_ENABLE(threads,
 302 [  --enable-threads        enable thread usage for target GCC.
 303   --enable-threads=LIB    use LIB thread package for target GCC.],,
 304 enable_threads='')
 305
 306 enable_threads_flag=$enable_threads
 307 # Check if a valid thread package
 308 case x${enable_threads_flag} in
 309         x | xno)
 310                 # No threads
 311                 target_thread_file='single'
 312                 ;;
 313         xyes)
 314                 # default
 315                 target_thread_file=''
 316                 ;;
 317         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 318         xsolaris | xwin32 | xdce | xvxworks | xaix)
 319                 target_thread_file=$enable_threads_flag
 320                 ;;
 321         *)
 322                 echo "$enable_threads is an unknown thread package" 1>&2
 323                 exit 1
 324                 ;;
 325 esac
 326
 327 AC_ARG_ENABLE(objc-gc,
 328 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 329                           the GNU Objective-C runtime.],
 330 if test x$enable_objc_gc = xno; then
 331         objc_boehm_gc=''
 332 else
 333         objc_boehm_gc=1
 334 fi,
 335 objc_boehm_gc='')
 336
 337 AC_ARG_WITH(dwarf2,
 338 [  --with-dwarf2          force the default debug format to be DWARF2.],
 339 dwarf2="$with_dwarf2",
 340 dwarf2=no)
 341
 342 AC_ARG_ENABLE(shared,
 343 [  --disable-shared       don't provide a shared libgcc.],
 344 [], [enable_shared=yes])
 345 AC_SUBST(enable_shared)
 346
 347 # Determine the host, build, and target systems
 348 AC_CANONICAL_SYSTEM
 349
 350 # Find the native compiler
 351 AC_PROG_CC
 352 AC_PROG_CC_C_O
 353 # autoconf is lame and doesn't give us any substitution variable for this.
 354 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 355   NO_MINUS_C_MINUS_O=yes
 356 else
 357   OUTPUT_OPTION='-o $@'
 358 fi
 359 AC_SUBST(NO_MINUS_C_MINUS_O)
 360 AC_SUBST(OUTPUT_OPTION)
 361
 362 gcc_AC_C_LONG_DOUBLE
 363
 364 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 365 ac_cv_prog_cc_no_long_long,
 366 [save_CFLAGS="$CFLAGS"
 367 CFLAGS="-Wno-long-long"
 368 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 369                ac_cv_prog_cc_no_long_long=no)
 370 CFLAGS="$save_CFLAGS"])
 371 strict1_warn=
 372 if test $ac_cv_prog_cc_no_long_long = yes; then
 373   strict1_warn="-pedantic -Wno-long-long"
 374 fi
 375 AC_SUBST(strict1_warn)
 376
 377 # If the native compiler is GCC, we can enable warnings even in stage1.
 378 # That's useful for people building cross-compilers, or just running a
 379 # quick `make'.
 380 warn_cflags=
 381 if test "x$GCC" = "xyes"; then
 382   warn_cflags='$(GCC_WARN_CFLAGS)'
 383 fi
 384 AC_SUBST(warn_cflags)
 385
 386 # Stage specific cflags for build.
 387 stage1_cflags=
 388 case $build in
 389 vax-*-*)
 390   if test x$GCC = xyes
 391   then
 392     stage1_cflags="-Wa,-J"
 393   else
 394     stage1_cflags="-J"
 395   fi
 396   ;;
 397 esac
 398 AC_SUBST(stage1_cflags)
 399
 400 AC_PROG_MAKE_SET
 401
 402 AC_MSG_CHECKING([whether a default assembler was specified])
 403 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 404     if test x"$gas_flag" = x"no"; then
 405         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 406     else
 407         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 408     fi
 409 else
 410     AC_MSG_RESULT(no)
 411 fi
 412
 413 AC_MSG_CHECKING([whether a default linker was specified])
 414 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 415     if test x"$gnu_ld_flag" = x"no"; then
 416         AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 417     else
 418         AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 419     fi
 420 else
 421     AC_MSG_RESULT(no)
 422 fi
 423
 424 AC_MSG_CHECKING(for GNU C library)
 425 AC_CACHE_VAL(gcc_cv_glibc,
 426 [AC_TRY_COMPILE(
 427   [#include <features.h>],[
 428 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 429 #error Not a GNU C library system
 430 #endif],
 431   [gcc_cv_glibc=yes],
 432   gcc_cv_glibc=no)])
 433 AC_MSG_RESULT($gcc_cv_glibc)
 434 if test $gcc_cv_glibc = yes; then
 435   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 436 fi
 437
 438 AC_C_INLINE
 439
 440 # Find some useful tools
 441 AC_PROG_AWK
 442 gcc_AC_PROG_LN
 443 gcc_AC_PROG_LN_S
 444 gcc_AC_C_VOLATILE
 445 AC_PROG_RANLIB
 446 gcc_AC_PROG_INSTALL
 447
 448 AC_HEADER_STDC
 449 AC_HEADER_TIME
 450 gcc_AC_HEADER_STRING
 451 AC_HEADER_SYS_WAIT
 452 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 453                  fcntl.h unistd.h stab.h sys/file.h sys/time.h \
 454                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 455                  direct.h malloc.h langinfo.h iconv.h)
 456
 457 # Check for thread headers.
 458 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 459 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 460
 461 # See if GNAT has been installed
 462 AC_CHECK_PROG(gnat, gnatbind, yes, no)
 463
 464 # Do we have a single-tree copy of texinfo?
 465 if test -f $srcdir/../texinfo/Makefile.in; then
 466   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 467   gcc_cv_prog_makeinfo_modern=yes
 468   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 469 else
 470   # See if makeinfo has been installed and is modern enough
 471   # that we can use it.
 472   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 473   [GNU texinfo.* \([0-9][0-9.]*\)],
 474   [3.1[2-9] | 3.[2-9][0-9] | 4.* | 1.6[89] | 1.7[0-9]])
 475 fi
 476
 477 if test $gcc_cv_prog_makeinfo_modern = no; then
 478   AC_MSG_WARN([
 479 *** Makeinfo is missing or too old.
 480 *** Info documentation will not be built or installed.])
 481   BUILD_INFO=
 482   INSTALL_INFO=
 483 else
 484   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 485   INSTALL_INFO=install-info     AC_SUBST(INSTALL_INFO)
 486 fi
 487
 488 # How about lex?
 489 dnl Don't use AC_PROG_LEX; we insist on flex.
 490 dnl LEXLIB is not useful in gcc.
 491 if test -f $srcdir/../flex/skel.c; then
 492   FLEX='$(objdir)/../flex/flex'
 493 else
 494   AC_CHECK_PROG(FLEX, flex, flex, false)
 495 fi
 496
 497 # Bison?
 498 # The -L switch is so bison can find its skeleton file.
 499 if test -f $srcdir/../bison/bison.simple; then
 500   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 501 else
 502   AC_CHECK_PROG(BISON, bison, bison, false)
 503 fi
 504
 505 # See if the stage1 system preprocessor understands the ANSI C
 506 # preprocessor stringification operator.
 507 AC_C_STRINGIZE
 508
 509 # Use <inttypes.h> only if it exists,
 510 # doesn't clash with <sys/types.h>, and declares intmax_t.
 511 AC_MSG_CHECKING(for inttypes.h)
 512 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 513 [AC_TRY_COMPILE(
 514   [#include <sys/types.h>
 515 #include <inttypes.h>],
 516   [intmax_t i = -1;],
 517   [gcc_cv_header_inttypes_h=yes],
 518   gcc_cv_header_inttypes_h=no)])
 519 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 520 if test $gcc_cv_header_inttypes_h = yes; then
 521   AC_DEFINE(HAVE_INTTYPES_H, 1,
 522         [Define if you have a working <inttypes.h> header file.])
 523 fi
 524
 525 #
 526 # Determine if enumerated bitfields are unsigned.   ISO C says they can
 527 # be either signed or unsigned.
 528 #
 529 AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 530 [AC_TRY_RUN(#include <stdlib.h>
 531 enum t { BLAH = 128 } ;
 532 struct s_t { enum t member : 8; } s ;
 533 int main(void)
 534 {
 535         s.member = BLAH;
 536         if (s.member < 0) exit(1);
 537         exit(0);
 538
 539 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 540 if test $gcc_cv_enum_bf_unsigned = yes; then
 541   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 542     [Define if enumerated bitfields are treated as unsigned values.])
 543 fi
 544
 545 AC_CHECK_FUNCS(strtoul bsearch putenv popen bcopy \
 546         strchr strrchr kill getrlimit setrlimit atoll atoq \
 547         sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 548         fputs_unlocked getrusage valloc iconv nl_langinfo)
 549
 550 AC_CHECK_TYPE(ssize_t, int)
 551
 552 # Try to determine the array type of the second argument of getgroups
 553 # for the target system (int or gid_t).
 554 AC_TYPE_GETGROUPS
 555 if test "${target}" = "${build}"; then
 556   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 557 else
 558   case "${target}" in
 559         # This condition may need some tweaking.  It should include all
 560         # targets where the array type of the second argument of getgroups
 561         # is int and the type of gid_t is not equivalent to int.
 562         *-*-sunos* | *-*-ultrix*)
 563                 TARGET_GETGROUPS_T=int
 564                 ;;
 565         *)
 566                 TARGET_GETGROUPS_T=gid_t
 567                 ;;
 568   esac
 569 fi
 570 AC_SUBST(TARGET_GETGROUPS_T)
 571
 572 gcc_AC_FUNC_VFPRINTF_DOPRNT
 573 gcc_AC_FUNC_PRINTF_PTR
 574
 575 case "${host}" in
 576 *-*-uwin*)
 577   # Under some versions of uwin, vfork is notoriously buggy and the test
 578   # can hang configure; on other versions, vfork exists just as a stub.
 579   # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 580   ac_cv_func_vfork_works=no
 581   ;;
 582 esac
 583 AC_FUNC_VFORK
 584 AC_FUNC_MMAP_ANYWHERE
 585 AC_FUNC_MMAP_FILE
 586
 587 # We will need to find libiberty.h and ansidecl.h
 588 saved_CFLAGS="$CFLAGS"
 589 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 590 gcc_AC_CHECK_DECLS(bcopy \
 591         getenv atol sbrk abort atof getcwd getwd \
 592         strsignal putc_unlocked fputs_unlocked strstr environ \
 593         malloc realloc calloc free basename getopt, , ,[
 594 #include "gansidecl.h"
 595 #include "system.h"])
 596
 597 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 598 #include "gansidecl.h"
 599 #include "system.h"
 600 #ifdef HAVE_SYS_RESOURCE_H
 601 #include <sys/resource.h>
 602 #endif
 603 ])
 604
 605 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 606 CFLAGS="$saved_CFLAGS"
 607
 608 # mkdir takes a single argument on some systems.
 609 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 610
 611 # File extensions
 612 manext='.1'
 613 objext='.o'
 614 AC_SUBST(manext)
 615 AC_SUBST(objext)
 616
 617 build_xm_file=
 618 build_xm_defines=
 619 build_install_headers_dir=install-headers-tar
 620 build_exeext=
 621 host_xm_file=
 622 host_xm_defines=
 623 host_xmake_file=
 624 host_truncate_target=
 625 host_exeext=
 626
 627 # Decode the host machine, then the target machine.
 628 # For the host machine, we save the xm_file variable as host_xm_file;
 629 # then we decode the target machine and forget everything else
 630 # that came from the host machine.
 631 for machine in $build $host $target; do
 632         . ${srcdir}/config.gcc
 633 done
 634
 635 extra_objs="${host_extra_objs} ${extra_objs}"
 636
 637 # Default the target-machine variables that were not explicitly set.
 638 if test x"$tm_file" = x
 639 then tm_file=$cpu_type/$cpu_type.h; fi
 640
 641 if test x$extra_headers = x
 642 then extra_headers=; fi
 643
 644 if test x"$xm_file" = x
 645 then xm_file=$cpu_type/xm-$cpu_type.h; fi
 646
 647 if test x$md_file = x
 648 then md_file=$cpu_type/$cpu_type.md; fi
 649
 650 if test x$out_file = x
 651 then out_file=$cpu_type/$cpu_type.c; fi
 652
 653 if test x"$tmake_file" = x
 654 then tmake_file=$cpu_type/t-$cpu_type
 655 fi
 656
 657 if test x"$dwarf2" = xyes
 658 then tm_file="$tm_file tm-dwarf2.h"
 659 fi
 660
 661 if test x$float_format = x
 662 then float_format=i64
 663 fi
 664
 665 if test $float_format = none
 666 then float_h_file=Makefile.in
 667 else float_h_file=float-$float_format.h
 668 fi
 669
 670 # Handle cpp installation.
 671 if test x$enable_cpp != xno
 672 then
 673   tmake_file="$tmake_file t-install-cpp"
 674 fi
 675
 676 # Say what files are being used for the output code and MD file.
 677 echo "Using \`$srcdir/config/$out_file' to output insns."
 678 echo "Using \`$srcdir/config/$md_file' as machine description file."
 679
 680 count=a
 681 for f in $tm_file; do
 682         count=${count}x
 683 done
 684 if test $count = ax; then
 685         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
 686 else
 687         echo "Using the following target machine macro files:"
 688         for f in $tm_file; do
 689                 echo "  $srcdir/config/$f"
 690         done
 691 fi
 692
 693 count=a
 694 for f in $host_xm_file; do
 695         count=${count}x
 696 done
 697 if test $count = ax; then
 698         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
 699 else
 700         echo "Using the following host machine macro files:"
 701         for f in $host_xm_file; do
 702                 echo "  $srcdir/config/$f"
 703         done
 704 fi
 705
 706 if test "$host_xm_file" != "$build_xm_file"; then
 707         count=a
 708         for f in $build_xm_file; do
 709                 count=${count}x
 710         done
 711         if test $count = ax; then
 712                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
 713         else
 714                 echo "Using the following build machine macro files:"
 715                 for f in $build_xm_file; do
 716                         echo "  $srcdir/config/$f"
 717                 done
 718         fi
 719 fi
 720
 721 if test x$thread_file = x; then
 722         if test x$target_thread_file != x; then
 723                 thread_file=$target_thread_file
 724         else
 725                 thread_file='single'
 726         fi
 727 fi
 728
 729 # Set up the header files.
 730 # $links is the list of header files to create.
 731 # $vars is the list of shell variables with file names to include.
 732 # auto-host.h is the file containing items generated by autoconf and is
 733 # the first file included by config.h.
 734 null_defines=
 735 host_xm_file="auto-host.h gansidecl.h ${host_xm_file} hwint.h"
 736
 737 # If host=build, it is correct to have hconfig include auto-host.h
 738 # as well.  If host!=build, we are in error and need to do more
 739 # work to find out the build config parameters.
 740 if test x$host = x$build
 741 then
 742         build_xm_file="auto-host.h gansidecl.h ${build_xm_file} hwint.h"
 743 else
 744         # We create a subdir, then run autoconf in the subdir.
 745         # To prevent recursion we set host and build for the new
 746         # invocation of configure to the build for this invocation
 747         # of configure.
 748         tempdir=build.$$
 749         rm -rf $tempdir
 750         mkdir $tempdir
 751         cd $tempdir
 752         case ${srcdir} in
 753         /*) realsrcdir=${srcdir};;
 754         *) realsrcdir=../${srcdir};;
 755         esac
 756         CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
 757                 --target=$target --host=$build --build=$build
 758
 759         # We just finished tests for the build machine, so rename
 760         # the file auto-build.h in the gcc directory.
 761         mv auto-host.h ../auto-build.h
 762         cd ..
 763         rm -rf $tempdir
 764         build_xm_file="auto-build.h gansidecl.h ${build_xm_file} hwint.h"
 765 fi
 766
 767 xm_file="gansidecl.h ${xm_file}"
 768 tm_file="gansidecl.h ${tm_file}"
 769
 770 vars="host_xm_file tm_file tm_p_file xm_file build_xm_file"
 771 links="config.h tm.h tm_p.h tconfig.h hconfig.h"
 772 defines="host_xm_defines null_defines null_defines xm_defines build_xm_defines"
 773
 774 rm -f config.bak
 775 if test -f config.status; then mv -f config.status config.bak; fi
 776
 777 # Make the links.
 778 while test -n "$vars"
 779 do
 780         set $vars; var=$1; shift; vars=$*
 781         set $links; link=$1; shift; links=$*
 782         set $defines; define=$1; shift; defines=$*
 783
 784         rm -f $link
 785         # Make sure the file is created, even if it is empty.
 786         echo >$link
 787
 788         # Define TARGET_CPU_DEFAULT if the system wants one.
 789         # This substitutes for lots of *.h files.
 790         if test "$target_cpu_default" != "" -a $link = tm.h
 791         then
 792                 echo "#define TARGET_CPU_DEFAULT ($target_cpu_default)" >>$link
 793         fi
 794
 795         for file in `eval echo '$'$var`; do
 796                 case $file in
 797                 auto-host.h | auto-build.h )
 798                         ;;
 799                 *)
 800                         echo '#ifdef IN_GCC' >>$link
 801                         ;;
 802                 esac
 803                 echo "#include \"$file\"" >>$link
 804                 case $file in
 805                 auto-host.h | auto-build.h )
 806                         ;;
 807                 *)
 808                         echo '#endif' >>$link
 809                         ;;
 810                 esac
 811         done
 812
 813         for def in `eval echo '$'$define`; do
 814                 echo "#ifndef $def" >>$link
 815                 echo "#define $def" >>$link
 816                 echo "#endif" >>$link
 817         done
 818 done
 819
 820 # Truncate the target if necessary
 821 if test x$host_truncate_target != x; then
 822         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
 823 fi
 824
 825 # Get the version trigger filename from the toplevel
 826 if test "${with_gcc_version_trigger+set}" = set; then
 827         gcc_version_trigger=$with_gcc_version_trigger
 828 else
 829         gcc_version_trigger=${srcdir}/version.c
 830 fi
 831 changequote(,)dnl
 832 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 833 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 834
 835 # Compile in configure arguments.
 836 if test -f configargs.h ; then
 837         # Being re-configured.
 838         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 839         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
 840 else
 841         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
 842 fi
 843 cat > configargs.h <<EOF
 844 /* Generated automatically. */
 845 static const char configuration_arguments[] = "$gcc_config_arguments";
 846 EOF
 847 changequote([,])dnl
 848
 849 # Internationalization
 850 PACKAGE=gcc
 851 VERSION="$gcc_version"
 852 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
 853         [Define to the name of the distribution.])
 854 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
 855         [Define to the version of the distribution.])
 856 AC_SUBST(PACKAGE)
 857 AC_SUBST(VERSION)
 858
 859 ALL_LINGUAS="en_GB"
 860
 861 # Enable NLS support by default
 862 AC_ARG_ENABLE(nls,
 863   [  --enable-nls            use Native Language Support (default)],
 864   , enable_nls=yes)
 865
 866 # if cross compiling, disable NLS support.
 867 # It's not worth the trouble, at least for now.
 868
 869 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
 870   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
 871   enable_nls=no
 872 fi
 873
 874 # if NLS is enabled, also enable check in po subdir
 875 if test $enable_nls = yes; then
 876   CHECK_PO=check-po
 877 else
 878   CHECK_PO=""
 879 fi
 880
 881 AC_SUBST(CHECK_PO)
 882
 883 AM_GNU_GETTEXT
 884 XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"
 885
 886 # Windows32 Registry support for specifying GCC installation paths.
 887 AC_ARG_ENABLE(win32-registry,
 888 [  --disable-win32-registry
 889                           Disable lookup of installation paths in the
 890                          Registry on Windows hosts.
 891   --enable-win32-registry Enable registry lookup (default).
 892   --enable-win32-registry=KEY
 893                           Use KEY instead of GCC version as the last portion
 894                          of the registry key.],,)
 895
 896 AC_MSG_CHECKING(whether windows registry support is requested)
 897 if test x$enable_win32_registry != xno; then
 898   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
 899 [Define to 1 if installation paths should be looked up in Windows32
 900    Registry. Ignored on non windows32 hosts.])
 901   AC_MSG_RESULT(yes)
 902 else
 903   AC_MSG_RESULT(no)
 904 fi
 905
 906 # Check if user specified a different registry key.
 907 case x${enable_win32_registry} in
 908 x | xyes)
 909   # default.
 910   gcc_cv_win32_registry_key="$VERSION"
 911   ;;
 912 xno)
 913   # no registry lookup.
 914   gcc_cv_win32_registry_key=''
 915   ;;
 916 *)
 917   # user-specified key.
 918   gcc_cv_win32_registry_key="$enable_win32_registry"
 919   ;;
 920 esac
 921
 922 if test x$enable_win32_registry != xno; then
 923   AC_MSG_CHECKING(registry key on windows hosts)
 924   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
 925         [Define to be the last portion of registry key on windows hosts.])
 926   AC_MSG_RESULT($gcc_cv_win32_registry_key)
 927 fi
 928
 929 # Get an absolute path to the GCC top-level source directory
 930 holddir=`pwd`
 931 cd $srcdir
 932 topdir=`pwd`
 933 cd $holddir
 934
 935 # Conditionalize the makefile for this host machine.
 936 # Make-host contains the concatenation of all host makefile fragments
 937 # [there can be more than one].  This file is built by configure.frag.
 938 host_overrides=Make-host
 939 dep_host_xmake_file=
 940 for f in .. ${host_xmake_file}
 941 do
 942         if test -f ${srcdir}/config/$f
 943         then
 944                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
 945         fi
 946 done
 947
 948 # Conditionalize the makefile for this target machine.
 949 # Make-target contains the concatenation of all host makefile fragments
 950 # [there can be more than one].  This file is built by configure.frag.
 951 target_overrides=Make-target
 952 dep_tmake_file=
 953 for f in .. ${tmake_file}
 954 do
 955         if test -f ${srcdir}/config/$f
 956         then
 957                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
 958         fi
 959 done
 960
 961 # If the host doesn't support symlinks, modify CC in
 962 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
 963 # Otherwise, we can use "CC=$(CC)".
 964 rm -f symtest.tem
 965 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
 966 then
 967         cc_set_by_configure="\$(CC)"
 968         quoted_cc_set_by_configure="\$(CC)"
 969         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
 970 else
 971         rm -f symtest.tem
 972         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
 973         then
 974                 symbolic_link="cp -p"
 975         else
 976                 symbolic_link="cp"
 977         fi
 978         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
 979         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
 980         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
 981 fi
 982 rm -f symtest.tem
 983
 984 out_object_file=`basename $out_file .c`.o
 985
 986 tm_file_list=
 987 for f in $tm_file; do
 988   case $f in
 989     gansidecl.h )
 990        tm_file_list="${tm_file_list} $f" ;;
 991     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
 992   esac
 993 done
 994
 995 host_xm_file_list=
 996 for f in $host_xm_file; do
 997   case $f in
 998     auto-host.h | gansidecl.h | hwint.h )
 999        host_xm_file_list="${host_xm_file_list} $f" ;;
1000     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1001   esac
1002 done
1003
1004 build_xm_file_list=
1005 for f in $build_xm_file; do
1006   case $f in
1007     auto-build.h | auto-host.h | gansidecl.h | hwint.h )
1008        build_xm_file_list="${build_xm_file_list} $f" ;;
1009     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1010   esac
1011 done
1012
1013 # Define macro CROSS_COMPILE in compilation
1014 # if this is a cross-compiler.
1015 # Also use all.cross instead of all.internal
1016 # and add cross-make to Makefile.
1017 cross_overrides="/dev/null"
1018 if test x$host != x$target
1019 then
1020         cross_defines="CROSS=-DCROSS_COMPILE"
1021         cross_overrides="${topdir}/cross-make"
1022 fi
1023
1024 # If this is a cross-compiler that does not
1025 # have its own set of headers then define
1026 # inhibit_libc
1027
1028 # If this is using newlib, then define inhibit_libc in
1029 # LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
1030 # libgcc.a, but that's OK because newlib should have its own version of
1031 # assert.h.
1032 inhibit_libc=
1033 if [test x$host != x$target] && [test x$with_headers = x]; then
1034        inhibit_libc=-Dinhibit_libc
1035 else
1036        if [test x$with_newlib = xyes]; then
1037                inhibit_libc=-Dinhibit_libc
1038        fi
1039 fi
1040 AC_SUBST(inhibit_libc)
1041
1042 # When building gcc with a cross-compiler, we need to fix a few things.
1043 # This must come after cross-make as we want all.build to override
1044 # all.cross.
1045 build_overrides="/dev/null"
1046 if test x$build != x$host
1047 then
1048         build_overrides="${topdir}/build-make"
1049 fi
1050
1051 # Expand extra_headers to include complete path.
1052 # This substitutes for lots of t-* files.
1053 extra_headers_list=
1054 if test "x$extra_headers" = x
1055 then true
1056 else
1057         # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1058         for file in $extra_headers;
1059         do
1060                 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1061         done
1062 fi
1063
1064 if test x$use_collect2 = xno; then
1065         use_collect2=
1066 fi
1067
1068 # Add a definition of USE_COLLECT2 if system wants one.
1069 # Also tell toplev.c what to do.
1070 # This substitutes for lots of t-* files.
1071 if test x$use_collect2 = x
1072 then
1073         will_use_collect2=
1074         maybe_use_collect2=
1075 else
1076         will_use_collect2="collect2"
1077         maybe_use_collect2="-DUSE_COLLECT2"
1078 fi
1079
1080 # NEED TO CONVERT
1081 # Set MD_DEPS if the real md file is in md.pre-cpp.
1082 # Set MD_CPP to the cpp to pass the md file through.  Md files use ';'
1083 # for line oriented comments, so we must always use a GNU cpp.  If
1084 # building gcc with a cross compiler, use the cross compiler just
1085 # built.  Otherwise, we can use the cpp just built.
1086 md_file_sub=
1087 if test "x$md_cppflags" = x
1088 then
1089         md_file_sub=$srcdir/config/$md_file
1090 else
1091         md_file=md
1092 fi
1093
1094 # If we have gas in the build tree, make a link to it.
1095 if test -f ../gas/Makefile; then
1096         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1097 fi
1098
1099 # If we have nm in the build tree, make a link to it.
1100 if test -f ../binutils/Makefile; then
1101         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1102 fi
1103
1104 # If we have ld in the build tree, make a link to it.
1105 if test -f ../ld/Makefile; then
1106 #       if test x$use_collect2 = x; then
1107 #               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
1108 #       else
1109                 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1110 #       fi
1111 fi
1112
1113 # Figure out what assembler we will be using.
1114 AC_MSG_CHECKING(what assembler to use)
1115 gcc_cv_as=
1116 gcc_cv_gas_major_version=
1117 gcc_cv_gas_minor_version=
1118 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1119 if test -x "$DEFAULT_ASSEMBLER"; then
1120         gcc_cv_as="$DEFAULT_ASSEMBLER"
1121 elif test -x "$AS"; then
1122         gcc_cv_as="$AS"
1123 elif test -x as$host_exeext; then
1124         # Build using assembler in the current directory.
1125         gcc_cv_as=./as$host_exeext
1126 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1127         # Single tree build which includes gas.
1128         for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1129         do
1130 changequote(,)dnl
1131                 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1132 changequote([,])dnl
1133                 if test x$gcc_cv_gas_version != x; then
1134                         break
1135                 fi
1136         done
1137 changequote(,)dnl
1138         gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1139         gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1140 changequote([,])dnl
1141 fi
1142
1143 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1144         # Native build.
1145         # Search the same directories that the installed compiler will
1146         # search.  Else we may find the wrong assembler and lose.  If we
1147         # do not find a suitable assembler binary, then try the user's
1148         # path.
1149         #
1150         # Also note we have to check MD_EXEC_PREFIX before checking the
1151         # user's path.  Unfortunately, there is no good way to get at the
1152         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1153         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1154         # to be fixed as part of the make/configure rewrite too.
1155
1156         if test "x$exec_prefix" = xNONE; then
1157                 if test "x$prefix" = xNONE; then
1158                         test_prefix=/usr/local
1159                 else
1160                         test_prefix=$prefix
1161                 fi
1162         else
1163                 test_prefix=$exec_prefix
1164         fi
1165
1166         # If the loop below does not find an assembler, then use whatever
1167         # one we can find in the users's path.
1168         # user's path.
1169         as=as$host_exeext
1170
1171         test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1172                    $test_prefix/lib/gcc-lib/$target \
1173                    /usr/lib/gcc/$target/$gcc_version \
1174                    /usr/lib/gcc/$target \
1175                    $test_prefix/$target/bin/$target/$gcc_version \
1176                    $test_prefix/$target/bin \
1177                    /usr/libexec \
1178                    /usr/ccs/gcc \
1179                    /usr/ccs/bin \
1180                    /udk/usr/ccs/bin \
1181                    /bsd43/usr/lib/cmplrs/cc \
1182                    /usr/cross64/usr/bin \
1183                    /usr/lib/cmplrs/cc \
1184                    /sysv/usr/lib/cmplrs/cc \
1185                    /svr4/usr/lib/cmplrs/cc \
1186                    /usr/bin"
1187
1188         for dir in $test_dirs; do
1189                 if test -f $dir/as$host_exeext; then
1190                         gcc_cv_as=$dir/as$host_exeext
1191                         break;
1192                 fi
1193         done
1194 fi
1195 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1196   AC_MSG_RESULT("newly built gas")
1197 else
1198   AC_MSG_RESULT($gcc_cv_as)
1199 fi
1200
1201 # Figure out what nm we will be using.
1202 AC_MSG_CHECKING(what nm to use)
1203 if test -x nm$host_exeext; then
1204         gcc_cv_nm=./nm$host_exeext
1205 elif test x$host = x$target; then
1206         # Native build.
1207         gcc_cv_nm=nm$host_exeext
1208 fi
1209 AC_MSG_RESULT($gcc_cv_nm)
1210
1211 # Figure out what assembler alignment features are present.
1212 AC_MSG_CHECKING(assembler alignment features)
1213 gcc_cv_as_alignment_features=
1214 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1215         # Gas version 2.6 and later support for .balign and .p2align.
1216         # bytes to skip when using .p2align.
1217         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1218                 gcc_cv_as_alignment_features=".balign and .p2align"
1219                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1220         fi
1221         # Gas version 2.8 and later support specifying the maximum
1222         # bytes to skip when using .p2align.
1223         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1224                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1225                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1226         fi
1227 elif test x$gcc_cv_as != x; then
1228         # Check if we have .balign and .p2align
1229         echo ".balign  4" > conftest.s
1230         echo ".p2align  2" >> conftest.s
1231         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1232                 gcc_cv_as_alignment_features=".balign and .p2align"
1233                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1234         fi
1235         rm -f conftest.s conftest.o
1236         # Check if specifying the maximum bytes to skip when
1237         # using .p2align is supported.
1238         echo ".p2align 4,,7" > conftest.s
1239         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1240                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1241                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1242         fi
1243         rm -f conftest.s conftest.o
1244 fi
1245 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1246
1247 AC_MSG_CHECKING(assembler subsection support)
1248 gcc_cv_as_subsections=
1249 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1250   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1251     gcc_cv_as_subsections="working .subsection -1"
1252   fi
1253 elif test x$gcc_cv_as != x; then
1254         # Check if we have .subsection
1255         echo ".subsection 1" > conftest.s
1256         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1257                 gcc_cv_as_subsections=".subsection"
1258                 if test x$gcc_cv_nm != x; then
1259                         cat > conftest.s <<EOF
1260 conftest_label1: .word 0
1261 .subsection -1
1262 conftest_label2: .word 0
1263 .previous
1264 EOF
1265                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1266                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1267                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1268                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1269                                         :
1270                                 else
1271                                         gcc_cv_as_subsections="working .subsection -1"
1272                                 fi
1273                         fi
1274                 fi
1275         fi
1276         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1277 fi
1278 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1279         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1280 [Define if your assembler supports .subsection and .subsection -1 starts
1281    emitting at the beginning of your section.])
1282 fi
1283 AC_MSG_RESULT($gcc_cv_as_subsections)
1284
1285 AC_MSG_CHECKING(assembler weak support)
1286 gcc_cv_as_weak=
1287 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1288   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1289     gcc_cv_as_weak="yes"
1290   fi
1291 elif test x$gcc_cv_as != x; then
1292         # Check if we have .weak
1293         echo "  .weak foobar" > conftest.s
1294         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1295                 gcc_cv_as_weak="yes"
1296         fi
1297         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1298 fi
1299 if test x"$gcc_cv_as_weak" = xyes; then
1300         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1301 fi
1302 AC_MSG_RESULT($gcc_cv_as_weak)
1303
1304 AC_MSG_CHECKING(assembler hidden support)
1305 gcc_cv_as_hidden=
1306 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1307   if test "$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
1308     gcc_cv_as_hidden="yes"
1309   fi
1310 elif test x$gcc_cv_as != x; then
1311         # Check if we have .hidden
1312         echo "  .hidden foobar" > conftest.s
1313         echo "foobar:" >> conftest.s
1314         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1315                 gcc_cv_as_hidden="yes"
1316         fi
1317         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1318 fi
1319 if test x"$gcc_cv_as_hidden" = xyes; then
1320         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1321                 [Define if your assembler supports .hidden.])
1322 fi
1323 AC_MSG_RESULT($gcc_cv_as_hidden)
1324
1325 case "$target" in
1326   sparc*-*-*)
1327     AC_CACHE_CHECK([assembler .register pseudo-op support],
1328         gcc_cv_as_register_pseudo_op, [
1329         gcc_cv_as_register_pseudo_op=unknown
1330         if test x$gcc_cv_as != x; then
1331             # Check if we have .register
1332             echo ".register %g2, #scratch" > conftest.s
1333             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1334                 gcc_cv_as_register_pseudo_op=yes
1335             else
1336                 gcc_cv_as_register_pseudo_op=no
1337             fi
1338             rm -f conftest.s conftest.o
1339         fi
1340     ])
1341     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1342         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1343                 [Define if your assembler supports .register.])
1344     fi
1345
1346     AC_CACHE_CHECK([assembler supports -relax],
1347         gcc_cv_as_relax_opt, [
1348         gcc_cv_as_relax_opt=unknown
1349         if test x$gcc_cv_as != x; then
1350             # Check if gas supports -relax
1351             echo ".text" > conftest.s
1352             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1353                 gcc_cv_as_relax_opt=yes
1354             else
1355                 gcc_cv_as_relax_opt=no
1356             fi
1357             rm -f conftest.s conftest.o
1358         fi
1359     ])
1360     if test "x$gcc_cv_as_relax_opt" = xyes; then
1361         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1362                 [Define if your assembler supports -relax option.])
1363     fi
1364
1365     case "$tm_file" in
1366     *64*)
1367         AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1368             gcc_cv_as_flags64, [
1369                 if test -n "$gcc_cv_as"; then
1370                     echo ".xword foo" > conftest.s
1371                     gcc_cv_as_flags64=no
1372                     for flag in "-xarch=v9" "-64 -Av9"; do
1373                         if $gcc_cv_as $flag -o conftest.o conftest.s \
1374                             > /dev/null 2>&1; then
1375                             gcc_cv_as_flags64=$flag
1376                             break
1377                         fi
1378                     done
1379                     rm -f conftest.s conftest.o
1380                 else
1381                     if test "$gas" = yes; then
1382                         gcc_cv_as_flags64="-64 -Av9"
1383                     else
1384                         gcc_cv_as_flags64="-xarch=v9"
1385                     fi
1386                 fi
1387         ])
1388         if test "x$gcc_cv_as_flags64" = xno; then
1389 changequote(, )
1390             tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1391             dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1392 changequote([, ])
1393         else
1394             AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1395                         [Define if the assembler supports 64bit sparc.])
1396         fi
1397         ;;
1398     *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1399         ;;
1400     esac
1401
1402     if test "x$gcc_cv_as_flags64" != xno; then
1403         AC_CACHE_CHECK([for assembler offsetable %lo() support],
1404             gcc_cv_as_offsetable_lo10, [
1405             gcc_cv_as_offsetable_lo10=unknown
1406             if test "x$gcc_cv_as" != x; then
1407                 # Check if assembler has offsetable %lo()
1408                 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1409                 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1410                 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1411                         > /dev/null 2>&1 &&
1412                    $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1413                         > /dev/null 2>&1; then
1414                     if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1415                         gcc_cv_as_offsetable_lo10=no
1416                     else
1417                         gcc_cv_as_offsetable_lo10=yes
1418                     fi
1419                 else
1420                     gcc_cv_as_offsetable_lo10=no
1421                 fi
1422                 rm -f conftest.s conftest.o conftest1.s conftest1.o
1423             fi
1424         ])
1425         if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1426             AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1427                 [Define if your assembler supports offsetable %lo().])
1428         fi
1429     fi
1430     ;;
1431
1432 changequote(,)dnl
1433   i[34567]86-*-*)
1434 changequote([,])dnl
1435     AC_MSG_CHECKING(assembler instructions)
1436     gcc_cv_as_instructions=
1437     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1438       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1439         gcc_cv_as_instructions="filds fists"
1440       fi
1441     elif test x$gcc_cv_as != x; then
1442         set "filds fists" "filds mem; fists mem"
1443         while test $# -gt 0
1444         do
1445                 echo "$2" > conftest.s
1446                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1447                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1448                 fi
1449                 shift 2
1450         done
1451         rm -f conftest.s conftest.o
1452     fi
1453     if test x"$gcc_cv_as_instructions" != x; then
1454         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1455     fi
1456     AC_MSG_RESULT($gcc_cv_as_instructions)
1457     ;;
1458 esac
1459
1460 # Figure out what language subdirectories are present.
1461 # Look if the user specified --enable-languages="..."; if not, use
1462 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1463 # go away some day.
1464 if test x"${enable_languages+set}" != xset; then
1465         if test x"${LANGUAGES+set}" = xset; then
1466                 enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
1467         else
1468                 enable_languages=all
1469         fi
1470 else
1471         if test x"${enable_languages}" = x; then
1472                 AC_MSG_ERROR([--enable-languages needs at least one argument])
1473         fi
1474 fi
1475 subdirs=
1476 for lang in ${srcdir}/*/config-lang.in ..
1477 do
1478         case $lang in
1479         ..) ;;
1480         # The odd quoting in the next line works around
1481         # an apparent bug in bash 1.12 on linux.
1482 changequote(,)dnl
1483         ${srcdir}/[*]/config-lang.in) ;;
1484         *)
1485           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
1486           if test "x$lang_alias" = x
1487           then
1488                 echo "$lang doesn't set \$language." 1>&2
1489                 exit 1
1490           fi
1491           if test x"${enable_languages}" = xall && test x"${lang_alias}" != xCHILL; then
1492                 add_this_lang=yes
1493           else
1494                 case "${enable_languages}" in
1495                     ${lang_alias} | "${lang_alias},"* | *",${lang_alias},"* | *",${lang_alias}" )
1496                         add_this_lang=yes
1497                         ;;
1498                     * )
1499                         add_this_lang=no
1500                         ;;
1501                 esac
1502           fi
1503           if test x"${add_this_lang}" = xyes; then
1504                 case $lang in
1505                     ${srcdir}/ada/config-lang.in)
1506                         if test x$gnat = xyes ; then
1507                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1508                         fi
1509                         ;;
1510                     *)
1511                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1512                         ;;
1513                 esac
1514           fi
1515           ;;
1516 changequote([,])dnl
1517         esac
1518 done
1519
1520 # Make gthr-default.h if we have a thread file.
1521 gthread_flags=
1522 if test $thread_file != single; then
1523     rm -f gthr-default.h
1524     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1525     gthread_flags=-DHAVE_GTHR_DEFAULT
1526 fi
1527 AC_SUBST(gthread_flags)
1528
1529 # Find out what GC implementation we want, or may, use.
1530 AC_ARG_WITH(gc,
1531 [  --with-gc={simple,page} Choose the garbage collection mechanism to use
1532                            with the compiler.],
1533 [case "$withval" in
1534   simple | page)
1535     GGC=ggc-$withval
1536     ;;
1537   *)
1538     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1539     ;;
1540 esac],
1541 [if test $ac_cv_func_mmap_anywhere = yes \
1542     || test $ac_cv_func_valloc = yes; then
1543   GGC=ggc-page
1544 else
1545   GGC=ggc-simple
1546 fi])
1547 AC_SUBST(GGC)
1548 echo "Using $GGC for garbage collection."
1549
1550 # Use the system's zlib library.
1551 zlibdir=-L../zlib
1552 zlibinc="-I\$(srcdir)/../zlib"
1553 AC_ARG_WITH(system-zlib,
1554 [  --with-system-zlib      use installed libz],
1555 zlibdir=
1556 zlibinc=
1557 )
1558 AC_SUBST(zlibdir)
1559 AC_SUBST(zlibinc)
1560
1561 # Build a new-abi (c++) system
1562 AC_ARG_ENABLE(new-gxx-abi,
1563 [  --enable-new-gxx-abi
1564                           select the new abi for g++. You must select an ABI
1565                           at configuration time, so that the correct runtime
1566                           support is built. You cannot mix ABIs.],
1567 [AC_DEFINE(ENABLE_NEW_GXX_ABI, 1,
1568         [Define if you want to always select the new-abi for g++.])
1569 GXX_ABI_FLAG='-fnew-abi'
1570 echo "Building a new-abi g++ compiler."
1571 ])
1572 AC_SUBST(GXX_ABI_FLAG)
1573
1574 AC_DEFINE_UNQUOTED(ENABLE_STD_NAMESPACE, $ac_esn,
1575   [Define to 1 if you want to enable namespaces (-fhonor-std) by default.])
1576 AC_SUBST(HAVE_LIBSTDCXX_V3)
1577
1578 dnl Very limited version of automake's enable-maintainer-mode
1579
1580 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1581   dnl maintainer-mode is disabled by default
1582   AC_ARG_ENABLE(maintainer-mode,
1583 [  --enable-maintainer-mode enable make rules and dependencies not useful
1584                           (and sometimes confusing) to the casual installer],
1585       maintainer_mode=$enableval,
1586       maintainer_mode=no)
1587
1588 AC_MSG_RESULT($maintainer_mode)
1589
1590 if test "$maintainer_mode" = "yes"; then
1591   MAINT=''
1592 else
1593   MAINT='#'
1594 fi
1595 AC_SUBST(MAINT)dnl
1596
1597 # Make empty files to contain the specs and options for each language.
1598 # Then add #include lines to for a compiler that has specs and/or options.
1599
1600 lang_specs_files=
1601 lang_options_files=
1602 lang_tree_files=
1603 rm -f specs.h options.h gencheck.h
1604 touch specs.h options.h gencheck.h
1605 for subdir in . $subdirs
1606 do
1607         if test -f $srcdir/$subdir/lang-specs.h; then
1608                 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1609                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1610         fi
1611         if test -f $srcdir/$subdir/lang-options.h; then
1612                 echo "#include \"$subdir/lang-options.h\"" >>options.h
1613                 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1614         fi
1615         if test -f $srcdir/$subdir/$subdir-tree.def; then
1616                 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1617                 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1618         fi
1619 done
1620
1621 # These (without "all_") are set in each config-lang.in.
1622 # `language' must be a single word so is spelled singularly.
1623 all_languages=
1624 all_boot_languages=
1625 all_compilers=
1626 all_stagestuff=
1627 all_diff_excludes=
1628 all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug mklibgcc'
1629 # List of language makefile fragments.
1630 all_lang_makefiles=
1631 all_headers=
1632 all_lib2funcs=
1633
1634 # Add the language fragments.
1635 # Languages are added via two mechanisms.  Some information must be
1636 # recorded in makefile variables, these are defined in config-lang.in.
1637 # We accumulate them and plug them into the main Makefile.
1638 # The other mechanism is a set of hooks for each of the main targets
1639 # like `clean', `install', etc.
1640
1641 language_fragments="Make-lang"
1642 language_hooks="Make-hooks"
1643
1644 for s in .. $subdirs
1645 do
1646         if test $s != ".."
1647         then
1648                 language=
1649                 boot_language=
1650                 compilers=
1651                 stagestuff=
1652                 diff_excludes=
1653                 headers=
1654                 outputs=
1655                 lib2funcs=
1656                 . ${srcdir}/$s/config-lang.in
1657                 if test "x$language" = x
1658                 then
1659                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1660                         exit 1
1661                 fi
1662                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1663                 if test -f ${srcdir}/$s/Makefile.in
1664                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1665                 fi
1666                 all_languages="$all_languages $language"
1667                 if test "x$boot_language" = xyes
1668                 then
1669                         all_boot_languages="$all_boot_languages $language"
1670                 fi
1671                 all_compilers="$all_compilers $compilers"
1672                 all_stagestuff="$all_stagestuff $stagestuff"
1673                 all_diff_excludes="$all_diff_excludes $diff_excludes"
1674                 all_headers="$all_headers $headers"
1675                 all_outputs="$all_outputs $outputs"
1676                 all_lib2funcs="$all_lib2funcs $lib2funcs"
1677         fi
1678 done
1679
1680 # Since we can't use `::' targets, we link each language in
1681 # with a set of hooks, reached indirectly via lang.${target}.
1682
1683 rm -f Make-hooks
1684 touch Make-hooks
1685 target_list="all.build all.cross start.encap rest.encap \
1686         info dvi \
1687         install-normal install-common install-info install-man \
1688         uninstall \
1689         mostlyclean clean distclean extraclean maintainer-clean \
1690         stage1 stage2 stage3 stage4"
1691 for t in $target_list
1692 do
1693         x=
1694         for lang in .. $all_languages
1695         do
1696                 if test $lang != ".."; then
1697                         x="$x $lang.$t"
1698                 fi
1699         done
1700         echo "lang.$t: $x" >> Make-hooks
1701 done
1702
1703 # If we're not building in srcdir, create .gdbinit.
1704
1705 if test ! -f Makefile.in; then
1706         echo "dir ." > .gdbinit
1707         echo "dir ${srcdir}" >> .gdbinit
1708         if test x$gdb_needs_out_file_path = xyes
1709         then
1710                 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
1711         fi
1712         if test "x$subdirs" != x; then
1713                 for s in $subdirs
1714                 do
1715                         echo "dir ${srcdir}/$s" >> .gdbinit
1716                 done
1717         fi
1718         echo "source ${srcdir}/.gdbinit" >> .gdbinit
1719 fi
1720
1721 # Define variables host_canonical and build_canonical
1722 # because some Cygnus local changes in the Makefile depend on them.
1723 build_canonical=${build}
1724 host_canonical=${host}
1725 target_subdir=
1726 if test "${host}" != "${target}" ; then
1727     target_subdir=${target}/
1728 fi
1729 AC_SUBST(build_canonical)
1730 AC_SUBST(host_canonical)
1731 AC_SUBST(target_subdir)
1732
1733 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
1734 # absolute path for gcc_tooldir based on inserting the number of up-directory
1735 # movements required to get from $(exec_prefix) to $(prefix) into the basic
1736 # $(libsubdir)/@(unlibsubdir) based path.
1737 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
1738 # make and thus we'd get different behavior depending on where we built the
1739 # sources.
1740 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
1741     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
1742 else
1743 changequote(<<, >>)dnl
1744 # An explanation of the sed strings:
1745 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
1746 #  -e 's|/$||'            match a trailing forward slash and eliminates it
1747 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
1748 #  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
1749 #
1750 # (*) Note this pattern overwrites the first character of the string
1751 # with a forward slash if one is not already present.  This is not a
1752 # problem because the exact names of the sub-directories concerned is
1753 # unimportant, just the number of them matters.
1754 #
1755 # The practical upshot of these patterns is like this:
1756 #
1757 #  prefix     exec_prefix        result
1758 #  ------     -----------        ------
1759 #   /foo        /foo/bar          ../
1760 #   /foo/       /foo/bar          ../
1761 #   /foo        /foo/bar/         ../
1762 #   /foo/       /foo/bar/         ../
1763 #   /foo        /foo/bar/ugg      ../../
1764 #
1765     dollar='$$'
1766     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
1767 changequote([, ])dnl
1768 fi
1769 AC_SUBST(gcc_tooldir)
1770 AC_SUBST(dollar)
1771
1772 # Nothing to do for FLOAT_H, float_format already handled.
1773 objdir=`pwd`
1774 AC_SUBST(objdir)
1775
1776 # Process the language and host/target makefile fragments.
1777 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
1778
1779 # Substitute configuration variables
1780 AC_SUBST(subdirs)
1781 AC_SUBST(all_boot_languages)
1782 AC_SUBST(all_compilers)
1783 AC_SUBST(all_diff_excludes)
1784 AC_SUBST(all_headers)
1785 AC_SUBST(all_lang_makefiles)
1786 AC_SUBST(all_languages)
1787 AC_SUBST(all_lib2funcs)
1788 AC_SUBST(all_stagestuff)
1789 AC_SUBST(build_exeext)
1790 AC_SUBST(build_install_headers_dir)
1791 AC_SUBST(build_xm_file_list)
1792 AC_SUBST(cc_set_by_configure)
1793 AC_SUBST(quoted_cc_set_by_configure)
1794 AC_SUBST(cpp_install_dir)
1795 AC_SUBST(dep_host_xmake_file)
1796 AC_SUBST(dep_tmake_file)
1797 AC_SUBST(extra_c_flags)
1798 AC_SUBST(extra_headers_list)
1799 AC_SUBST(extra_objs)
1800 AC_SUBST(extra_parts)
1801 AC_SUBST(extra_passes)
1802 AC_SUBST(extra_programs)
1803 AC_SUBST(float_h_file)
1804 AC_SUBST(gcc_config_arguments)
1805 AC_SUBST(gcc_gxx_include_dir)
1806 AC_SUBST(gcc_version)
1807 AC_SUBST(gcc_version_full)
1808 AC_SUBST(gcc_version_trigger)
1809 AC_SUBST(host_exeext)
1810 AC_SUBST(host_extra_gcc_objs)
1811 AC_SUBST(host_xm_file_list)
1812 AC_SUBST(install)
1813 AC_SUBST(lang_options_files)
1814 AC_SUBST(lang_specs_files)
1815 AC_SUBST(lang_tree_files)
1816 AC_SUBST(local_prefix)
1817 AC_SUBST(maybe_use_collect2)
1818 AC_SUBST(md_file)
1819 AC_SUBST(objc_boehm_gc)
1820 AC_SUBST(out_file)
1821 AC_SUBST(out_object_file)
1822 AC_SUBST(stage_prefix_set_by_configure)
1823 AC_SUBST(symbolic_link)
1824 AC_SUBST(thread_file)
1825 AC_SUBST(tm_file_list)
1826 AC_SUBST(will_use_collect2)
1827
1828
1829 AC_SUBST_FILE(target_overrides)
1830 AC_SUBST_FILE(host_overrides)
1831 AC_SUBST(cross_defines)
1832 AC_SUBST_FILE(cross_overrides)
1833 AC_SUBST_FILE(build_overrides)
1834 AC_SUBST_FILE(language_fragments)
1835 AC_SUBST_FILE(language_hooks)
1836
1837 # Echo that links are built
1838 if test x$host = x$target
1839 then
1840         str1="native "
1841 else
1842         str1="cross-"
1843         str2=" from $host"
1844 fi
1845
1846 if test x$host != x$build
1847 then
1848         str3=" on a $build system"
1849 fi
1850
1851 if test "x$str2" != x || test "x$str3" != x
1852 then
1853         str4=
1854 fi
1855
1856 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
1857
1858 if test "x$str2" != x || test "x$str3" != x
1859 then
1860         echo " ${str2}${str3}." 1>&2
1861 fi
1862
1863 # Truncate the target if necessary
1864 if test x$host_truncate_target != x; then
1865         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
1866 fi
1867
1868 # Configure the subdirectories
1869 # AC_CONFIG_SUBDIRS($subdirs)
1870
1871 # Create the Makefile
1872 # and configure language subdirectories
1873 AC_OUTPUT($all_outputs,
1874 [
1875 case x$CONFIG_HEADERS in
1876 xauto-host.h:config.in)
1877 echo > cstamp-h ;;
1878 esac
1879 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
1880 # bootstrapping and the installation procedure can still use
1881 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
1882 # FLAGS_TO_PASS has been modified to solve the problem there.
1883 # This is virtually a duplicate of what happens in configure.lang; we do
1884 # an extra check to make sure this only happens if ln -s can be used.
1885 if test "$symbolic_link" = "ln -s"; then
1886  for d in .. ${subdirs} ; do
1887    if test $d != ..; then
1888         STARTDIR=`pwd`
1889         cd $d
1890         for t in stage1 stage2 stage3 stage4 include
1891         do
1892                 rm -f $t
1893                 $symbolic_link ../$t $t 2>/dev/null
1894         done
1895         cd $STARTDIR
1896    fi
1897  done
1898 else true ; fi
1899 # Avoid having to add intl to our include paths.
1900 if test -f intl/libintl.h; then
1901   echo creating libintl.h
1902   echo '#include "intl/libintl.h"' >libintl.h
1903 fi
1904 ],
1905 [
1906 host='${host}'
1907 build='${build}'
1908 target='${target}'
1909 target_alias='${target_alias}'
1910 srcdir='${srcdir}'
1911 subdirs='${subdirs}'
1912 symbolic_link='${symbolic_link}'
1913 program_transform_set='${program_transform_set}'
1914 program_transform_name='${program_transform_name}'
1915 dep_host_xmake_file='${dep_host_xmake_file}'
1916 host_xmake_file='${host_xmake_file}'
1917 dep_tmake_file='${dep_tmake_file}'
1918 tmake_file='${tmake_file}'
1919 thread_file='${thread_file}'
1920 gcc_config_arguments='${gcc_config_arguments}'
1921 gcc_version='${gcc_version}'
1922 gcc_version_full='${gcc_version_full}'
1923 gcc_version_trigger='${gcc_version_trigger}'
1924 local_prefix='${local_prefix}'
1925 build_install_headers_dir='${build_install_headers_dir}'
1926 build_exeext='${build_exeext}'
1927 host_exeext='${host_exeext}'
1928 out_file='${out_file}'
1929 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
1930 SET_MAKE='${SET_MAKE}'
1931 target_list='${target_list}'
1932 target_overrides='${target_overrides}'
1933 host_overrides='${host_overrides}'
1934 cross_defines='${cross_defines}'
1935 cross_overrides='${cross_overrides}'
1936 build_overrides='${build_overrides}'
1937 cpp_install_dir='${cpp_install_dir}'
1938 ])