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=$withval
 272 fi])
 273
 274 # Enable Multibyte Characters for C/C++
 275 AC_ARG_ENABLE(c-mbchar,
 276 [  --enable-c-mbchar       Enable multibyte characters for C and C++.],
 277 if test x$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 # Do we have a single-tree copy of texinfo?
 450 if test -f $srcdir/../texinfo/Makefile.in; then
 451   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 452   gcc_cv_prog_makeinfo_modern=yes
 453   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 454 else
 455   # See if makeinfo has been installed and is modern enough
 456   # that we can use it.
 457   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 458   [GNU texinfo.* \([0-9][0-9.]*\)],
 459   [3.1[2-9] | 3.[2-9][0-9] | 4.* | 1.6[89] | 1.7[0-9]])
 460 fi
 461
 462 if test $gcc_cv_prog_makeinfo_modern = no; then
 463   AC_MSG_WARN([
 464 *** Makeinfo is missing or too old.
 465 *** Info documentation will not be built or installed.])
 466   BUILD_INFO=
 467   INSTALL_INFO=
 468 else
 469   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 470   INSTALL_INFO=install-info     AC_SUBST(INSTALL_INFO)
 471 fi
 472
 473 # How about lex?
 474 dnl Don't use AC_PROG_LEX; we insist on flex.
 475 dnl LEXLIB is not useful in gcc.
 476 if test -f $srcdir/../flex/skel.c; then
 477   FLEX='$(objdir)/../flex/flex'
 478 else
 479   AC_CHECK_PROG(FLEX, flex, flex, false)
 480 fi
 481
 482 # Bison?
 483 # The -L switch is so bison can find its skeleton file.
 484 if test -f $srcdir/../bison/bison.simple; then
 485   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 486 else
 487   AC_CHECK_PROG(BISON, bison, bison, false)
 488 fi
 489
 490 # See if the stage1 system preprocessor understands the ANSI C
 491 # preprocessor stringification operator.
 492 AC_C_STRINGIZE
 493
 494 # Use <inttypes.h> only if it exists,
 495 # doesn't clash with <sys/types.h>, and declares intmax_t.
 496 AC_MSG_CHECKING(for inttypes.h)
 497 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 498 [AC_TRY_COMPILE(
 499   [#include <sys/types.h>
 500 #include <inttypes.h>],
 501   [intmax_t i = -1;],
 502   [gcc_cv_header_inttypes_h=yes],
 503   gcc_cv_header_inttypes_h=no)])
 504 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 505 if test $gcc_cv_header_inttypes_h = yes; then
 506   AC_DEFINE(HAVE_INTTYPES_H, 1,
 507         [Define if you have a working <inttypes.h> header file.])
 508 fi
 509
 510 #
 511 # Determine if enumerated bitfields are unsigned.   ISO C says they can
 512 # be either signed or unsigned.
 513 #
 514 AC_CACHE_CHECK(for unsigned enumerated bitfields, gcc_cv_enum_bf_unsigned,
 515 [AC_TRY_RUN(#include <stdlib.h>
 516 enum t { BLAH = 128 } ;
 517 struct s_t { enum t member : 8; } s ;
 518 int main(void)
 519 {
 520         s.member = BLAH;
 521         if (s.member < 0) exit(1);
 522         exit(0);
 523
 524 }, gcc_cv_enum_bf_unsigned=yes, gcc_cv_enum_bf_unsigned=no, gcc_cv_enum_bf_unsigned=yes)])
 525 if test $gcc_cv_enum_bf_unsigned = yes; then
 526   AC_DEFINE(ENUM_BITFIELDS_ARE_UNSIGNED, 1,
 527     [Define if enumerated bitfields are treated as unsigned values.])
 528 fi
 529
 530 AC_CHECK_FUNCS(strtoul bsearch putenv popen bcopy \
 531         strchr strrchr kill getrlimit setrlimit atoll atoq \
 532         sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 533         fputs_unlocked getrusage valloc iconv nl_langinfo)
 534
 535 AC_CHECK_TYPE(ssize_t, int)
 536
 537 # Try to determine the array type of the second argument of getgroups
 538 # for the target system (int or gid_t).
 539 AC_TYPE_GETGROUPS
 540 if test "${target}" = "${build}"; then
 541   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 542 else
 543   case "${target}" in
 544         # This condition may need some tweaking.  It should include all
 545         # targets where the array type of the second argument of getgroups
 546         # is int and the type of gid_t is not equivalent to int.
 547         *-*-sunos* | *-*-ultrix*)
 548                 TARGET_GETGROUPS_T=int
 549                 ;;
 550         *)
 551                 TARGET_GETGROUPS_T=gid_t
 552                 ;;
 553   esac
 554 fi
 555 AC_SUBST(TARGET_GETGROUPS_T)
 556
 557 gcc_AC_FUNC_VFPRINTF_DOPRNT
 558 gcc_AC_FUNC_PRINTF_PTR
 559
 560 case "${host}" in
 561 *-*-uwin*)
 562   # Under some versions of uwin, vfork is notoriously buggy and the test
 563   # can hang configure; on other versions, vfork exists just as a stub.
 564   # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 565   ac_cv_func_vfork_works=no
 566   ;;
 567 esac
 568 AC_FUNC_VFORK
 569 AC_FUNC_MMAP_ANYWHERE
 570 AC_FUNC_MMAP_FILE
 571
 572 # We will need to find libiberty.h and ansidecl.h
 573 saved_CFLAGS="$CFLAGS"
 574 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 575 gcc_AC_CHECK_DECLS(bcopy \
 576         getenv atol sbrk abort atof getcwd getwd \
 577         strsignal putc_unlocked fputs_unlocked strstr environ \
 578         malloc realloc calloc free basename getopt, , ,[
 579 #include "gansidecl.h"
 580 #include "system.h"])
 581
 582 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 583 #include "gansidecl.h"
 584 #include "system.h"
 585 #ifdef HAVE_SYS_RESOURCE_H
 586 #include <sys/resource.h>
 587 #endif
 588 ])
 589
 590 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 591 CFLAGS="$saved_CFLAGS"
 592
 593 # mkdir takes a single argument on some systems.
 594 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 595
 596 # File extensions
 597 manext='.1'
 598 objext='.o'
 599 AC_SUBST(manext)
 600 AC_SUBST(objext)
 601
 602 build_xm_file=
 603 build_xm_defines=
 604 build_install_headers_dir=install-headers-tar
 605 build_exeext=
 606 host_xm_file=
 607 host_xm_defines=
 608 host_xmake_file=
 609 host_truncate_target=
 610 host_exeext=
 611
 612 # Decode the host machine, then the target machine.
 613 # For the host machine, we save the xm_file variable as host_xm_file;
 614 # then we decode the target machine and forget everything else
 615 # that came from the host machine.
 616 for machine in $build $host $target; do
 617         . ${srcdir}/config.gcc
 618 done
 619
 620 extra_objs="${host_extra_objs} ${extra_objs}"
 621
 622 # Default the target-machine variables that were not explicitly set.
 623 if test x"$tm_file" = x
 624 then tm_file=$cpu_type/$cpu_type.h; fi
 625
 626 if test x"$extra_headers" = x
 627 then extra_headers=; fi
 628
 629 if test x"$xm_file" = x
 630 then xm_file=$cpu_type/xm-$cpu_type.h; fi
 631
 632 if test x$md_file = x
 633 then md_file=$cpu_type/$cpu_type.md; fi
 634
 635 if test x$out_file = x
 636 then out_file=$cpu_type/$cpu_type.c; fi
 637
 638 if test x"$tmake_file" = x
 639 then tmake_file=$cpu_type/t-$cpu_type
 640 fi
 641
 642 if test x"$dwarf2" = xyes
 643 then tm_file="$tm_file tm-dwarf2.h"
 644 fi
 645
 646 if test x$float_format = x
 647 then float_format=i64
 648 fi
 649
 650 if test $float_format = none
 651 then float_h_file=Makefile.in
 652 else float_h_file=float-$float_format.h
 653 fi
 654
 655 # Handle cpp installation.
 656 if test x$enable_cpp != xno
 657 then
 658   tmake_file="$tmake_file t-install-cpp"
 659 fi
 660
 661 # Say what files are being used for the output code and MD file.
 662 echo "Using \`$srcdir/config/$out_file' to output insns."
 663 echo "Using \`$srcdir/config/$md_file' as machine description file."
 664
 665 count=a
 666 for f in $tm_file; do
 667         count=${count}x
 668 done
 669 if test $count = ax; then
 670         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
 671 else
 672         echo "Using the following target machine macro files:"
 673         for f in $tm_file; do
 674                 echo "  $srcdir/config/$f"
 675         done
 676 fi
 677
 678 count=a
 679 for f in $host_xm_file; do
 680         count=${count}x
 681 done
 682 if test $count = ax; then
 683         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
 684 else
 685         echo "Using the following host machine macro files:"
 686         for f in $host_xm_file; do
 687                 echo "  $srcdir/config/$f"
 688         done
 689 fi
 690
 691 if test "$host_xm_file" != "$build_xm_file"; then
 692         count=a
 693         for f in $build_xm_file; do
 694                 count=${count}x
 695         done
 696         if test $count = ax; then
 697                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
 698         else
 699                 echo "Using the following build machine macro files:"
 700                 for f in $build_xm_file; do
 701                         echo "  $srcdir/config/$f"
 702                 done
 703         fi
 704 fi
 705
 706 if test x$thread_file = x; then
 707         if test x$target_thread_file != x; then
 708                 thread_file=$target_thread_file
 709         else
 710                 thread_file='single'
 711         fi
 712 fi
 713
 714 # Set up the header files.
 715 # $links is the list of header files to create.
 716 # $vars is the list of shell variables with file names to include.
 717 # auto-host.h is the file containing items generated by autoconf and is
 718 # the first file included by config.h.
 719 null_defines=
 720 host_xm_file="auto-host.h gansidecl.h ${host_xm_file} hwint.h"
 721
 722 # If host=build, it is correct to have hconfig include auto-host.h
 723 # as well.  If host!=build, we are in error and need to do more
 724 # work to find out the build config parameters.
 725 if test x$host = x$build
 726 then
 727         build_xm_file="auto-host.h gansidecl.h ${build_xm_file} hwint.h"
 728 else
 729         # We create a subdir, then run autoconf in the subdir.
 730         # To prevent recursion we set host and build for the new
 731         # invocation of configure to the build for this invocation
 732         # of configure.
 733         tempdir=build.$$
 734         rm -rf $tempdir
 735         mkdir $tempdir
 736         cd $tempdir
 737         case ${srcdir} in
 738         /*) realsrcdir=${srcdir};;
 739         *) realsrcdir=../${srcdir};;
 740         esac
 741         CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
 742                 --target=$target --host=$build --build=$build
 743
 744         # We just finished tests for the build machine, so rename
 745         # the file auto-build.h in the gcc directory.
 746         mv auto-host.h ../auto-build.h
 747         cd ..
 748         rm -rf $tempdir
 749         build_xm_file="auto-build.h gansidecl.h ${build_xm_file} hwint.h"
 750 fi
 751
 752 xm_file="gansidecl.h ${xm_file}"
 753 tm_file="gansidecl.h ${tm_file}"
 754
 755 vars="host_xm_file tm_file tm_p_file xm_file build_xm_file"
 756 links="config.h tm.h tm_p.h tconfig.h hconfig.h"
 757 defines="host_xm_defines null_defines null_defines xm_defines build_xm_defines"
 758
 759 rm -f config.bak
 760 if test -f config.status; then mv -f config.status config.bak; fi
 761
 762 # Make the links.
 763 while test -n "$vars"
 764 do
 765         set $vars; var=$1; shift; vars=$*
 766         set $links; link=$1; shift; links=$*
 767         set $defines; define=$1; shift; defines=$*
 768
 769         rm -f $link
 770         # Make sure the file is created, even if it is empty.
 771         echo >$link
 772
 773         # Define TARGET_CPU_DEFAULT if the system wants one.
 774         # This substitutes for lots of *.h files.
 775         if test "$target_cpu_default" != "" -a $link = tm.h
 776         then
 777                 echo "#define TARGET_CPU_DEFAULT ($target_cpu_default)" >>$link
 778         fi
 779         if test $link = tm.h
 780         then
 781                 echo "#ifndef GENERATOR_FILE" >>$link
 782                 echo "#include \"insn-codes.h\"" >>$link
 783                 echo "#endif" >>$link
 784         fi
 785
 786         for file in `eval echo '$'$var`; do
 787                 case $file in
 788                 auto-host.h | auto-build.h )
 789                         ;;
 790                 *)
 791                         echo '#ifdef IN_GCC' >>$link
 792                         ;;
 793                 esac
 794                 echo "#include \"$file\"" >>$link
 795                 case $file in
 796                 auto-host.h | auto-build.h )
 797                         ;;
 798                 *)
 799                         echo '#endif' >>$link
 800                         ;;
 801                 esac
 802         done
 803
 804         for def in `eval echo '$'$define`; do
 805                 echo "#ifndef $def" >>$link
 806                 echo "#define $def" >>$link
 807                 echo "#endif" >>$link
 808         done
 809 done
 810
 811 # Truncate the target if necessary
 812 if test x$host_truncate_target != x; then
 813         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
 814 fi
 815
 816 # Get the version trigger filename from the toplevel
 817 if test "${with_gcc_version_trigger+set}" = set; then
 818         gcc_version_trigger=$with_gcc_version_trigger
 819 else
 820         gcc_version_trigger=${srcdir}/version.c
 821 fi
 822 changequote(,)dnl
 823 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 824 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 825
 826 # Compile in configure arguments.
 827 if test -f configargs.h ; then
 828         # Being re-configured.
 829         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 830         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
 831 else
 832         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
 833 fi
 834 cat > configargs.h <<EOF
 835 /* Generated automatically. */
 836 static const char configuration_arguments[] = "$gcc_config_arguments";
 837 EOF
 838 changequote([,])dnl
 839
 840 # Internationalization
 841 PACKAGE=gcc
 842 VERSION="$gcc_version"
 843 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
 844         [Define to the name of the distribution.])
 845 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
 846         [Define to the version of the distribution.])
 847 AC_SUBST(PACKAGE)
 848 AC_SUBST(VERSION)
 849
 850 ALL_LINGUAS="sv"
 851
 852 # Enable NLS support by default
 853 AC_ARG_ENABLE(nls,
 854   [  --enable-nls            use Native Language Support (default)],
 855   , enable_nls=yes)
 856
 857 # if cross compiling, disable NLS support.
 858 # It's not worth the trouble, at least for now.
 859
 860 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
 861   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
 862   enable_nls=no
 863 fi
 864
 865 # if NLS is enabled, also enable check in po subdir
 866 if test $enable_nls = yes; then
 867   CHECK_PO=check-po
 868 else
 869   CHECK_PO=""
 870 fi
 871
 872 AC_SUBST(CHECK_PO)
 873
 874 AM_GNU_GETTEXT
 875 XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"
 876
 877 # Windows32 Registry support for specifying GCC installation paths.
 878 AC_ARG_ENABLE(win32-registry,
 879 [  --disable-win32-registry
 880                           Disable lookup of installation paths in the
 881                          Registry on Windows hosts.
 882   --enable-win32-registry Enable registry lookup (default).
 883   --enable-win32-registry=KEY
 884                           Use KEY instead of GCC version as the last portion
 885                          of the registry key.],,)
 886
 887 AC_MSG_CHECKING(whether windows registry support is requested)
 888 if test x$enable_win32_registry != xno; then
 889   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
 890 [Define to 1 if installation paths should be looked up in Windows32
 891    Registry. Ignored on non windows32 hosts.])
 892   AC_MSG_RESULT(yes)
 893 else
 894   AC_MSG_RESULT(no)
 895 fi
 896
 897 # Check if user specified a different registry key.
 898 case x${enable_win32_registry} in
 899 x | xyes)
 900   # default.
 901   gcc_cv_win32_registry_key="$VERSION"
 902   ;;
 903 xno)
 904   # no registry lookup.
 905   gcc_cv_win32_registry_key=''
 906   ;;
 907 *)
 908   # user-specified key.
 909   gcc_cv_win32_registry_key="$enable_win32_registry"
 910   ;;
 911 esac
 912
 913 if test x$enable_win32_registry != xno; then
 914   AC_MSG_CHECKING(registry key on windows hosts)
 915   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
 916         [Define to be the last portion of registry key on windows hosts.])
 917   AC_MSG_RESULT($gcc_cv_win32_registry_key)
 918 fi
 919
 920 # Get an absolute path to the GCC top-level source directory
 921 holddir=`pwd`
 922 cd $srcdir
 923 topdir=`pwd`
 924 cd $holddir
 925
 926 # Conditionalize the makefile for this host machine.
 927 # Make-host contains the concatenation of all host makefile fragments
 928 # [there can be more than one].  This file is built by configure.frag.
 929 host_overrides=Make-host
 930 dep_host_xmake_file=
 931 for f in .. ${host_xmake_file}
 932 do
 933         if test -f ${srcdir}/config/$f
 934         then
 935                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
 936         fi
 937 done
 938
 939 # Conditionalize the makefile for this target machine.
 940 # Make-target contains the concatenation of all host makefile fragments
 941 # [there can be more than one].  This file is built by configure.frag.
 942 target_overrides=Make-target
 943 dep_tmake_file=
 944 for f in .. ${tmake_file}
 945 do
 946         if test -f ${srcdir}/config/$f
 947         then
 948                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
 949         fi
 950 done
 951
 952 # If the host doesn't support symlinks, modify CC in
 953 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
 954 # Otherwise, we can use "CC=$(CC)".
 955 rm -f symtest.tem
 956 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
 957 then
 958         cc_set_by_configure="\$(CC)"
 959         quoted_cc_set_by_configure="\$(CC)"
 960         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
 961 else
 962         rm -f symtest.tem
 963         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
 964         then
 965                 symbolic_link="cp -p"
 966         else
 967                 symbolic_link="cp"
 968         fi
 969         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
 970         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
 971         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
 972 fi
 973 rm -f symtest.tem
 974
 975 out_object_file=`basename $out_file .c`.o
 976
 977 tm_file_list=
 978 for f in $tm_file; do
 979   case $f in
 980     gansidecl.h )
 981        tm_file_list="${tm_file_list} $f" ;;
 982     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
 983   esac
 984 done
 985
 986 host_xm_file_list=
 987 for f in $host_xm_file; do
 988   case $f in
 989     auto-host.h | gansidecl.h | hwint.h )
 990        host_xm_file_list="${host_xm_file_list} $f" ;;
 991     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
 992   esac
 993 done
 994
 995 build_xm_file_list=
 996 for f in $build_xm_file; do
 997   case $f in
 998     auto-build.h | auto-host.h | gansidecl.h | hwint.h )
 999        build_xm_file_list="${build_xm_file_list} $f" ;;
1000     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1001   esac
1002 done
1003
1004 # Define macro CROSS_COMPILE in compilation
1005 # if this is a cross-compiler.
1006 # Also use all.cross instead of all.internal
1007 # and add cross-make to Makefile.
1008 cross_overrides="/dev/null"
1009 if test x$host != x$target
1010 then
1011         cross_defines="CROSS=-DCROSS_COMPILE"
1012         cross_overrides="${topdir}/cross-make"
1013 fi
1014
1015 # If this is a cross-compiler that does not
1016 # have its own set of headers then define
1017 # inhibit_libc
1018
1019 # If this is using newlib, then define inhibit_libc in
1020 # LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
1021 # libgcc.a, but that's OK because newlib should have its own version of
1022 # assert.h.
1023 inhibit_libc=
1024 if [test x$host != x$target] && [test x$with_headers = x]; then
1025        inhibit_libc=-Dinhibit_libc
1026 else
1027        if [test x$with_newlib = xyes]; then
1028                inhibit_libc=-Dinhibit_libc
1029        fi
1030 fi
1031 AC_SUBST(inhibit_libc)
1032
1033 # When building gcc with a cross-compiler, we need to fix a few things.
1034 # This must come after cross-make as we want all.build to override
1035 # all.cross.
1036 build_overrides="/dev/null"
1037 if test x$build != x$host
1038 then
1039         build_overrides="${topdir}/build-make"
1040 fi
1041
1042 # Expand extra_headers to include complete path.
1043 # This substitutes for lots of t-* files.
1044 extra_headers_list=
1045 if test "x$extra_headers" = x
1046 then true
1047 else
1048         # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1049         for file in $extra_headers;
1050         do
1051                 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1052         done
1053 fi
1054
1055 if test x$use_collect2 = xno; then
1056         use_collect2=
1057 fi
1058
1059 # Add a definition of USE_COLLECT2 if system wants one.
1060 # Also tell toplev.c what to do.
1061 # This substitutes for lots of t-* files.
1062 if test x$use_collect2 = x
1063 then
1064         will_use_collect2=
1065         maybe_use_collect2=
1066 else
1067         will_use_collect2="collect2"
1068         maybe_use_collect2="-DUSE_COLLECT2"
1069 fi
1070
1071 # If we have gas in the build tree, make a link to it.
1072 if test -f ../gas/Makefile; then
1073         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1074 fi
1075
1076 # If we have nm in the build tree, make a link to it.
1077 if test -f ../binutils/Makefile; then
1078         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1079 fi
1080
1081 # If we have ld in the build tree, make a link to it.
1082 if test -f ../ld/Makefile; then
1083 #       if test x$use_collect2 = x; then
1084 #               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
1085 #       else
1086                 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1087 #       fi
1088 fi
1089
1090 # Figure out what assembler we will be using.
1091 AC_MSG_CHECKING(what assembler to use)
1092 gcc_cv_as=
1093 gcc_cv_gas_major_version=
1094 gcc_cv_gas_minor_version=
1095 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1096 if test -x "$DEFAULT_ASSEMBLER"; then
1097         gcc_cv_as="$DEFAULT_ASSEMBLER"
1098 elif test -x "$AS"; then
1099         gcc_cv_as="$AS"
1100 elif test -x as$host_exeext; then
1101         # Build using assembler in the current directory.
1102         gcc_cv_as=./as$host_exeext
1103 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1104         # Single tree build which includes gas.
1105         for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1106         do
1107 changequote(,)dnl
1108                 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1109 changequote([,])dnl
1110                 if test x$gcc_cv_gas_version != x; then
1111                         break
1112                 fi
1113         done
1114 changequote(,)dnl
1115         gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1116         gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1117 changequote([,])dnl
1118 fi
1119
1120 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1121         # Native build.
1122         # Search the same directories that the installed compiler will
1123         # search.  Else we may find the wrong assembler and lose.  If we
1124         # do not find a suitable assembler binary, then try the user's
1125         # path.
1126         #
1127         # Also note we have to check MD_EXEC_PREFIX before checking the
1128         # user's path.  Unfortunately, there is no good way to get at the
1129         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1130         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1131         # to be fixed as part of the make/configure rewrite too.
1132
1133         if test "x$exec_prefix" = xNONE; then
1134                 if test "x$prefix" = xNONE; then
1135                         test_prefix=/usr/local
1136                 else
1137                         test_prefix=$prefix
1138                 fi
1139         else
1140                 test_prefix=$exec_prefix
1141         fi
1142
1143         # If the loop below does not find an assembler, then use whatever
1144         # one we can find in the users's path.
1145         # user's path.
1146         as=as$host_exeext
1147
1148         test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1149                    $test_prefix/lib/gcc-lib/$target \
1150                    /usr/lib/gcc/$target/$gcc_version \
1151                    /usr/lib/gcc/$target \
1152                    $test_prefix/$target/bin/$target/$gcc_version \
1153                    $test_prefix/$target/bin \
1154                    /usr/libexec \
1155                    /usr/ccs/gcc \
1156                    /usr/ccs/bin \
1157                    /udk/usr/ccs/bin \
1158                    /bsd43/usr/lib/cmplrs/cc \
1159                    /usr/cross64/usr/bin \
1160                    /usr/lib/cmplrs/cc \
1161                    /sysv/usr/lib/cmplrs/cc \
1162                    /svr4/usr/lib/cmplrs/cc \
1163                    /usr/bin"
1164
1165         for dir in $test_dirs; do
1166                 if test -f $dir/as$host_exeext; then
1167                         gcc_cv_as=$dir/as$host_exeext
1168                         break;
1169                 fi
1170         done
1171 fi
1172 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1173   AC_MSG_RESULT("newly built gas")
1174 else
1175   AC_MSG_RESULT($gcc_cv_as)
1176 fi
1177
1178 # Figure out what nm we will be using.
1179 AC_MSG_CHECKING(what nm to use)
1180 if test -x nm$host_exeext; then
1181         gcc_cv_nm=./nm$host_exeext
1182 elif test x$host = x$target; then
1183         # Native build.
1184         gcc_cv_nm=nm$host_exeext
1185 fi
1186 AC_MSG_RESULT($gcc_cv_nm)
1187
1188 # Figure out what assembler alignment features are present.
1189 AC_MSG_CHECKING(assembler alignment features)
1190 gcc_cv_as_alignment_features=none
1191 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1192         # Gas version 2.6 and later support for .balign and .p2align.
1193         # bytes to skip when using .p2align.
1194         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1195                 gcc_cv_as_alignment_features=".balign and .p2align"
1196                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1197         fi
1198         # Gas version 2.8 and later support specifying the maximum
1199         # bytes to skip when using .p2align.
1200         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1201                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1202                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1203         fi
1204 elif test x$gcc_cv_as != x; then
1205         # Check if we have .balign and .p2align
1206         echo ".balign  4" > conftest.s
1207         echo ".p2align  2" >> conftest.s
1208         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1209                 gcc_cv_as_alignment_features=".balign and .p2align"
1210                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1211         fi
1212         rm -f conftest.s conftest.o
1213         # Check if specifying the maximum bytes to skip when
1214         # using .p2align is supported.
1215         echo ".p2align 4,,7" > conftest.s
1216         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1217                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1218                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1219         fi
1220         rm -f conftest.s conftest.o
1221 fi
1222 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1223
1224 AC_MSG_CHECKING(assembler subsection support)
1225 gcc_cv_as_subsections=no
1226 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1227   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1228     gcc_cv_as_subsections="working .subsection -1"
1229   fi
1230 elif test x$gcc_cv_as != x; then
1231         # Check if we have .subsection
1232         echo ".subsection 1" > conftest.s
1233         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1234                 gcc_cv_as_subsections=".subsection"
1235                 if test x$gcc_cv_nm != x; then
1236                         cat > conftest.s <<EOF
1237 conftest_label1: .word 0
1238 .subsection -1
1239 conftest_label2: .word 0
1240 .previous
1241 EOF
1242                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1243                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1244                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1245                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1246                                         :
1247                                 else
1248                                         gcc_cv_as_subsections="working .subsection -1"
1249                                 fi
1250                         fi
1251                 fi
1252         fi
1253         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1254 fi
1255 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1256         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1257 [Define if your assembler supports .subsection and .subsection -1 starts
1258    emitting at the beginning of your section.])
1259 fi
1260 AC_MSG_RESULT($gcc_cv_as_subsections)
1261
1262 AC_MSG_CHECKING(assembler weak support)
1263 gcc_cv_as_weak=no
1264 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1265   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1266     gcc_cv_as_weak="yes"
1267   fi
1268 elif test x$gcc_cv_as != x; then
1269         # Check if we have .weak
1270         echo "  .weak foobar" > conftest.s
1271         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1272                 gcc_cv_as_weak="yes"
1273         fi
1274         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1275 fi
1276 if test x"$gcc_cv_as_weak" = xyes; then
1277         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1278 fi
1279 AC_MSG_RESULT($gcc_cv_as_weak)
1280
1281 AC_MSG_CHECKING(assembler hidden support)
1282 gcc_cv_as_hidden=no
1283 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1284   if test "$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
1285     gcc_cv_as_hidden="yes"
1286   fi
1287 elif test x$gcc_cv_as != x; then
1288         # Check if we have .hidden
1289         echo "  .hidden foobar" > conftest.s
1290         echo "foobar:" >> conftest.s
1291         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1292                 gcc_cv_as_hidden="yes"
1293         fi
1294         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1295 fi
1296 if test x"$gcc_cv_as_hidden" = xyes; then
1297         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1298                 [Define if your assembler supports .hidden.])
1299 fi
1300 AC_MSG_RESULT($gcc_cv_as_hidden)
1301
1302 case "$target" in
1303   sparc*-*-*)
1304     AC_CACHE_CHECK([assembler .register pseudo-op support],
1305         gcc_cv_as_register_pseudo_op, [
1306         gcc_cv_as_register_pseudo_op=unknown
1307         if test x$gcc_cv_as != x; then
1308             # Check if we have .register
1309             echo ".register %g2, #scratch" > conftest.s
1310             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1311                 gcc_cv_as_register_pseudo_op=yes
1312             else
1313                 gcc_cv_as_register_pseudo_op=no
1314             fi
1315             rm -f conftest.s conftest.o
1316         fi
1317     ])
1318     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1319         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1320                 [Define if your assembler supports .register.])
1321     fi
1322
1323     AC_CACHE_CHECK([assembler supports -relax],
1324         gcc_cv_as_relax_opt, [
1325         gcc_cv_as_relax_opt=unknown
1326         if test x$gcc_cv_as != x; then
1327             # Check if gas supports -relax
1328             echo ".text" > conftest.s
1329             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1330                 gcc_cv_as_relax_opt=yes
1331             else
1332                 gcc_cv_as_relax_opt=no
1333             fi
1334             rm -f conftest.s conftest.o
1335         fi
1336     ])
1337     if test "x$gcc_cv_as_relax_opt" = xyes; then
1338         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1339                 [Define if your assembler supports -relax option.])
1340     fi
1341
1342     case "$tm_file" in
1343     *64*)
1344         AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1345             gcc_cv_as_flags64, [
1346                 if test -n "$gcc_cv_as"; then
1347                     echo ".xword foo" > conftest.s
1348                     gcc_cv_as_flags64=no
1349                     for flag in "-xarch=v9" "-64 -Av9"; do
1350                         if $gcc_cv_as $flag -o conftest.o conftest.s \
1351                             > /dev/null 2>&1; then
1352                             gcc_cv_as_flags64=$flag
1353                             break
1354                         fi
1355                     done
1356                     rm -f conftest.s conftest.o
1357                 else
1358                     if test "$gas" = yes; then
1359                         gcc_cv_as_flags64="-64 -Av9"
1360                     else
1361                         gcc_cv_as_flags64="-xarch=v9"
1362                     fi
1363                 fi
1364         ])
1365         if test "x$gcc_cv_as_flags64" = xno; then
1366 changequote(, )
1367             tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1368             dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1369 changequote([, ])
1370         else
1371             AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1372                         [Define if the assembler supports 64bit sparc.])
1373         fi
1374         ;;
1375     *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1376         ;;
1377     esac
1378
1379     if test "x$gcc_cv_as_flags64" != xno; then
1380         AC_CACHE_CHECK([for assembler offsetable %lo() support],
1381             gcc_cv_as_offsetable_lo10, [
1382             gcc_cv_as_offsetable_lo10=unknown
1383             if test "x$gcc_cv_as" != x; then
1384                 # Check if assembler has offsetable %lo()
1385                 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1386                 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1387                 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1388                         > /dev/null 2>&1 &&
1389                    $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1390                         > /dev/null 2>&1; then
1391                     if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1392                         gcc_cv_as_offsetable_lo10=no
1393                     else
1394                         gcc_cv_as_offsetable_lo10=yes
1395                     fi
1396                 else
1397                     gcc_cv_as_offsetable_lo10=no
1398                 fi
1399                 rm -f conftest.s conftest.o conftest1.s conftest1.o
1400             fi
1401         ])
1402         if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1403             AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1404                 [Define if your assembler supports offsetable %lo().])
1405         fi
1406     fi
1407     ;;
1408
1409 changequote(,)dnl
1410   i[34567]86-*-*)
1411 changequote([,])dnl
1412     AC_MSG_CHECKING(assembler instructions)
1413     gcc_cv_as_instructions=
1414     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1415       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1416         gcc_cv_as_instructions="filds fists"
1417       fi
1418     elif test x$gcc_cv_as != x; then
1419         set "filds fists" "filds mem; fists mem"
1420         while test $# -gt 0
1421         do
1422                 echo "$2" > conftest.s
1423                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1424                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1425                 fi
1426                 shift 2
1427         done
1428         rm -f conftest.s conftest.o
1429     fi
1430     if test x"$gcc_cv_as_instructions" != x; then
1431         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1432     fi
1433     AC_MSG_RESULT($gcc_cv_as_instructions)
1434     ;;
1435 esac
1436
1437 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
1438 gcc_cv_as_dwarf2_debug_line=no
1439 # ??? Not all targets support dwarf2 debug_line, even within a version
1440 # of gas.  Moreover, we need to emit a valid instruction to trigger any
1441 # info to the output file.  So, as supported targets are added to gas 2.11,
1442 # add some instruction here to (also) show we expect this might work.
1443 # ??? Once 2.11 is released, probably need to add first known working
1444 # version to the per-target configury.
1445 case "$target" in
1446   i?86*-*-* | mips*-*-* | alpha*-*-* | sparc*-*-*)
1447     insn="nop"
1448     ;;
1449   ia64*-*-*)
1450     insn="nop 0"
1451     ;;
1452   esac
1453 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
1454 then
1455   if test "$gcc_cv_gas_major_version" -eq 2 \
1456         -a "$gcc_cv_gas_minor_version" -ge 11 \
1457         -o "$gcc_cv_gas_major_version" -gt 2 \
1458      && grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1459      && test x"$insn" != x ; then
1460     gcc_cv_as_dwarf2_debug_line="yes"
1461   fi
1462 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
1463         echo '  .file 0 "conftest.s"' > conftest.s
1464         echo '  .loc 0 3 0' >> conftest.s
1465         echo "  $insn" >> conftest.s
1466         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1467            && grep debug_line conftest.o > /dev/null 2>&1 ; then
1468                 gcc_cv_as_dwarf2_debug_line="yes"
1469         fi
1470         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1471 fi
1472 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
1473         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
1474           [Define if your assembler supports dwarf2 .file/.loc directives.])
1475 fi
1476 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
1477
1478 # Figure out what language subdirectories are present.
1479 # Look if the user specified --enable-languages="..."; if not, use
1480 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1481 # go away some day.
1482 if test x"${enable_languages+set}" != xset; then
1483         if test x"${LANGUAGES+set}" = xset; then
1484                 enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
1485         else
1486                 enable_languages=all
1487         fi
1488 else
1489         if test x"${enable_languages}" = x; then
1490                 AC_MSG_ERROR([--enable-languages needs at least one argument])
1491         fi
1492 fi
1493 subdirs=
1494 for lang in ${srcdir}/*/config-lang.in ..
1495 do
1496         case $lang in
1497         ..) ;;
1498         # The odd quoting in the next line works around
1499         # an apparent bug in bash 1.12 on linux.
1500 changequote(,)dnl
1501         ${srcdir}/[*]/config-lang.in) ;;
1502         *)
1503           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
1504           if test "x$lang_alias" = x
1505           then
1506                 echo "$lang doesn't set \$language." 1>&2
1507                 exit 1
1508           fi
1509           if test x"${enable_languages}" = xall && test x"${lang_alias}" != xCHILL; then
1510                 add_this_lang=yes
1511           else
1512                 case "${enable_languages}" in
1513                     ${lang_alias} | "${lang_alias},"* | *",${lang_alias},"* | *",${lang_alias}" )
1514                         add_this_lang=yes
1515                         ;;
1516                     * )
1517                         add_this_lang=no
1518                         ;;
1519                 esac
1520           fi
1521           if test x"${add_this_lang}" = xyes; then
1522                 case $lang in
1523                     ${srcdir}/ada/config-lang.in)
1524                         if test x$gnat = xyes ; then
1525                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1526                         fi
1527                         ;;
1528                     *)
1529                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1530                         ;;
1531                 esac
1532           fi
1533           ;;
1534 changequote([,])dnl
1535         esac
1536 done
1537
1538 # Make gthr-default.h if we have a thread file.
1539 gthread_flags=
1540 if test $thread_file != single; then
1541     rm -f gthr-default.h
1542     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1543     gthread_flags=-DHAVE_GTHR_DEFAULT
1544 fi
1545 AC_SUBST(gthread_flags)
1546
1547 # Find out what GC implementation we want, or may, use.
1548 AC_ARG_WITH(gc,
1549 [  --with-gc={simple,page} Choose the garbage collection mechanism to use
1550                            with the compiler.],
1551 [case "$withval" in
1552   simple | page)
1553     GGC=ggc-$withval
1554     ;;
1555   *)
1556     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1557     ;;
1558 esac],
1559 [if test $ac_cv_func_mmap_anywhere = yes \
1560     || test $ac_cv_func_valloc = yes; then
1561   GGC=ggc-page
1562 else
1563   GGC=ggc-simple
1564 fi])
1565 AC_SUBST(GGC)
1566 echo "Using $GGC for garbage collection."
1567
1568 # Use the system's zlib library.
1569 zlibdir=-L../zlib
1570 zlibinc="-I\$(srcdir)/../zlib"
1571 AC_ARG_WITH(system-zlib,
1572 [  --with-system-zlib      use installed libz],
1573 zlibdir=
1574 zlibinc=
1575 )
1576 AC_SUBST(zlibdir)
1577 AC_SUBST(zlibinc)
1578
1579 # Build a new-abi (c++) system
1580 AC_ARG_ENABLE(new-gxx-abi,
1581 [  --enable-new-gxx-abi
1582                           select the new abi for g++. You must select an ABI
1583                           at configuration time, so that the correct runtime
1584                           support is built. You cannot mix ABIs.],
1585    ,
1586   enable_new_gxx_abi=yes)
1587
1588 if test x$enable_new_gxx_abi = xyes; then
1589   AC_DEFINE(ENABLE_NEW_GXX_ABI, 1,
1590             [Define if you want to always select the new-abi for g++.])
1591   GXX_ABI_FLAG='-fnew-abi'
1592 else
1593   GXX_ABI_FLAG=
1594 fi
1595 AC_SUBST(GXX_ABI_FLAG)
1596
1597 AC_DEFINE_UNQUOTED(ENABLE_STD_NAMESPACE, $ac_esn,
1598   [Define to 1 if you want to enable namespaces (-fhonor-std) by default.])
1599 AC_SUBST(HAVE_LIBSTDCXX_V3)
1600
1601 dnl Very limited version of automake's enable-maintainer-mode
1602
1603 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1604   dnl maintainer-mode is disabled by default
1605   AC_ARG_ENABLE(maintainer-mode,
1606 [  --enable-maintainer-mode enable make rules and dependencies not useful
1607                           (and sometimes confusing) to the casual installer],
1608       maintainer_mode=$enableval,
1609       maintainer_mode=no)
1610
1611 AC_MSG_RESULT($maintainer_mode)
1612
1613 if test "$maintainer_mode" = "yes"; then
1614   MAINT=''
1615 else
1616   MAINT='#'
1617 fi
1618 AC_SUBST(MAINT)dnl
1619
1620 # Make empty files to contain the specs and options for each language.
1621 # Then add #include lines to for a compiler that has specs and/or options.
1622
1623 lang_specs_files=
1624 lang_options_files=
1625 lang_tree_files=
1626 rm -f specs.h options.h gencheck.h
1627 touch specs.h options.h gencheck.h
1628 for subdir in . $subdirs
1629 do
1630         if test -f $srcdir/$subdir/lang-specs.h; then
1631                 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1632                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1633         fi
1634         if test -f $srcdir/$subdir/lang-options.h; then
1635                 echo "#include \"$subdir/lang-options.h\"" >>options.h
1636                 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1637         fi
1638         if test -f $srcdir/$subdir/$subdir-tree.def; then
1639                 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1640                 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1641         fi
1642 done
1643
1644 # These (without "all_") are set in each config-lang.in.
1645 # `language' must be a single word so is spelled singularly.
1646 all_languages=
1647 all_boot_languages=
1648 all_compilers=
1649 all_stagestuff=
1650 all_diff_excludes=
1651 all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug mklibgcc'
1652 # List of language makefile fragments.
1653 all_lang_makefiles=
1654 all_headers=
1655 all_lib2funcs=
1656
1657 # Add the language fragments.
1658 # Languages are added via two mechanisms.  Some information must be
1659 # recorded in makefile variables, these are defined in config-lang.in.
1660 # We accumulate them and plug them into the main Makefile.
1661 # The other mechanism is a set of hooks for each of the main targets
1662 # like `clean', `install', etc.
1663
1664 language_fragments="Make-lang"
1665 language_hooks="Make-hooks"
1666
1667 for s in .. $subdirs
1668 do
1669         if test $s != ".."
1670         then
1671                 language=
1672                 boot_language=
1673                 compilers=
1674                 stagestuff=
1675                 diff_excludes=
1676                 headers=
1677                 outputs=
1678                 lib2funcs=
1679                 . ${srcdir}/$s/config-lang.in
1680                 if test "x$language" = x
1681                 then
1682                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1683                         exit 1
1684                 fi
1685                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1686                 if test -f ${srcdir}/$s/Makefile.in
1687                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1688                 fi
1689                 all_languages="$all_languages $language"
1690                 if test "x$boot_language" = xyes
1691                 then
1692                         all_boot_languages="$all_boot_languages $language"
1693                 fi
1694                 all_compilers="$all_compilers $compilers"
1695                 all_stagestuff="$all_stagestuff $stagestuff"
1696                 all_diff_excludes="$all_diff_excludes $diff_excludes"
1697                 all_headers="$all_headers $headers"
1698                 all_outputs="$all_outputs $outputs"
1699                 all_lib2funcs="$all_lib2funcs $lib2funcs"
1700         fi
1701 done
1702
1703 # Since we can't use `::' targets, we link each language in
1704 # with a set of hooks, reached indirectly via lang.${target}.
1705
1706 rm -f Make-hooks
1707 touch Make-hooks
1708 target_list="all.build all.cross start.encap rest.encap \
1709         info dvi \
1710         install-normal install-common install-info install-man \
1711         uninstall \
1712         mostlyclean clean distclean extraclean maintainer-clean \
1713         stage1 stage2 stage3 stage4"
1714 for t in $target_list
1715 do
1716         x=
1717         for lang in .. $all_languages
1718         do
1719                 if test $lang != ".."; then
1720                         x="$x $lang.$t"
1721                 fi
1722         done
1723         echo "lang.$t: $x" >> Make-hooks
1724 done
1725
1726 # If we're not building in srcdir, create .gdbinit.
1727
1728 if test ! -f Makefile.in; then
1729         echo "dir ." > .gdbinit
1730         echo "dir ${srcdir}" >> .gdbinit
1731         if test x$gdb_needs_out_file_path = xyes
1732         then
1733                 echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
1734         fi
1735         if test "x$subdirs" != x; then
1736                 for s in $subdirs
1737                 do
1738                         echo "dir ${srcdir}/$s" >> .gdbinit
1739                 done
1740         fi
1741         echo "source ${srcdir}/.gdbinit" >> .gdbinit
1742 fi
1743
1744 # Define variables host_canonical and build_canonical
1745 # because some Cygnus local changes in the Makefile depend on them.
1746 build_canonical=${build}
1747 host_canonical=${host}
1748 target_subdir=
1749 if test "${host}" != "${target}" ; then
1750     target_subdir=${target}/
1751 fi
1752 AC_SUBST(build_canonical)
1753 AC_SUBST(host_canonical)
1754 AC_SUBST(target_subdir)
1755
1756 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
1757 # absolute path for gcc_tooldir based on inserting the number of up-directory
1758 # movements required to get from $(exec_prefix) to $(prefix) into the basic
1759 # $(libsubdir)/@(unlibsubdir) based path.
1760 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
1761 # make and thus we'd get different behavior depending on where we built the
1762 # sources.
1763 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
1764     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
1765 else
1766 changequote(<<, >>)dnl
1767 # An explanation of the sed strings:
1768 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
1769 #  -e 's|/$||'            match a trailing forward slash and eliminates it
1770 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
1771 #  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
1772 #
1773 # (*) Note this pattern overwrites the first character of the string
1774 # with a forward slash if one is not already present.  This is not a
1775 # problem because the exact names of the sub-directories concerned is
1776 # unimportant, just the number of them matters.
1777 #
1778 # The practical upshot of these patterns is like this:
1779 #
1780 #  prefix     exec_prefix        result
1781 #  ------     -----------        ------
1782 #   /foo        /foo/bar          ../
1783 #   /foo/       /foo/bar          ../
1784 #   /foo        /foo/bar/         ../
1785 #   /foo/       /foo/bar/         ../
1786 #   /foo        /foo/bar/ugg      ../../
1787 #
1788     dollar='$$'
1789     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
1790 changequote([, ])dnl
1791 fi
1792 AC_SUBST(gcc_tooldir)
1793 AC_SUBST(dollar)
1794
1795 # Nothing to do for FLOAT_H, float_format already handled.
1796 objdir=`pwd`
1797 AC_SUBST(objdir)
1798
1799 # Process the language and host/target makefile fragments.
1800 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
1801
1802 # Substitute configuration variables
1803 AC_SUBST(subdirs)
1804 AC_SUBST(all_boot_languages)
1805 AC_SUBST(all_compilers)
1806 AC_SUBST(all_diff_excludes)
1807 AC_SUBST(all_headers)
1808 AC_SUBST(all_lang_makefiles)
1809 AC_SUBST(all_languages)
1810 AC_SUBST(all_lib2funcs)
1811 AC_SUBST(all_stagestuff)
1812 AC_SUBST(build_exeext)
1813 AC_SUBST(build_install_headers_dir)
1814 AC_SUBST(build_xm_file_list)
1815 AC_SUBST(cc_set_by_configure)
1816 AC_SUBST(quoted_cc_set_by_configure)
1817 AC_SUBST(cpp_install_dir)
1818 AC_SUBST(dep_host_xmake_file)
1819 AC_SUBST(dep_tmake_file)
1820 AC_SUBST(extra_c_flags)
1821 AC_SUBST(extra_headers_list)
1822 AC_SUBST(extra_objs)
1823 AC_SUBST(extra_parts)
1824 AC_SUBST(extra_passes)
1825 AC_SUBST(extra_programs)
1826 AC_SUBST(float_h_file)
1827 AC_SUBST(gcc_config_arguments)
1828 AC_SUBST(gcc_gxx_include_dir)
1829 AC_SUBST(gcc_version)
1830 AC_SUBST(gcc_version_full)
1831 AC_SUBST(gcc_version_trigger)
1832 AC_SUBST(host_exeext)
1833 AC_SUBST(host_extra_gcc_objs)
1834 AC_SUBST(host_xm_file_list)
1835 AC_SUBST(install)
1836 AC_SUBST(lang_options_files)
1837 AC_SUBST(lang_specs_files)
1838 AC_SUBST(lang_tree_files)
1839 AC_SUBST(local_prefix)
1840 AC_SUBST(maybe_use_collect2)
1841 AC_SUBST(md_file)
1842 AC_SUBST(objc_boehm_gc)
1843 AC_SUBST(out_file)
1844 AC_SUBST(out_object_file)
1845 AC_SUBST(stage_prefix_set_by_configure)
1846 AC_SUBST(symbolic_link)
1847 AC_SUBST(thread_file)
1848 AC_SUBST(tm_file_list)
1849 AC_SUBST(will_use_collect2)
1850 AC_SUBST(c_target_objs)
1851 AC_SUBST(cxx_target_objs)
1852
1853
1854 AC_SUBST_FILE(target_overrides)
1855 AC_SUBST_FILE(host_overrides)
1856 AC_SUBST(cross_defines)
1857 AC_SUBST_FILE(cross_overrides)
1858 AC_SUBST_FILE(build_overrides)
1859 AC_SUBST_FILE(language_fragments)
1860 AC_SUBST_FILE(language_hooks)
1861
1862 # Echo that links are built
1863 if test x$host = x$target
1864 then
1865         str1="native "
1866 else
1867         str1="cross-"
1868         str2=" from $host"
1869 fi
1870
1871 if test x$host != x$build
1872 then
1873         str3=" on a $build system"
1874 fi
1875
1876 if test "x$str2" != x || test "x$str3" != x
1877 then
1878         str4=
1879 fi
1880
1881 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
1882
1883 if test "x$str2" != x || test "x$str3" != x
1884 then
1885         echo " ${str2}${str3}." 1>&2
1886 fi
1887
1888 # Truncate the target if necessary
1889 if test x$host_truncate_target != x; then
1890         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
1891 fi
1892
1893 # Configure the subdirectories
1894 # AC_CONFIG_SUBDIRS($subdirs)
1895
1896 # Create the Makefile
1897 # and configure language subdirectories
1898 AC_OUTPUT($all_outputs,
1899 [
1900 case x$CONFIG_HEADERS in
1901 xauto-host.h:config.in)
1902 echo > cstamp-h ;;
1903 esac
1904 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
1905 # bootstrapping and the installation procedure can still use
1906 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
1907 # FLAGS_TO_PASS has been modified to solve the problem there.
1908 # This is virtually a duplicate of what happens in configure.lang; we do
1909 # an extra check to make sure this only happens if ln -s can be used.
1910 if test "$symbolic_link" = "ln -s"; then
1911  for d in .. ${subdirs} ; do
1912    if test $d != ..; then
1913         STARTDIR=`pwd`
1914         cd $d
1915         for t in stage1 stage2 stage3 stage4 include
1916         do
1917                 rm -f $t
1918                 $symbolic_link ../$t $t 2>/dev/null
1919         done
1920         cd $STARTDIR
1921    fi
1922  done
1923 else true ; fi
1924 # Avoid having to add intl to our include paths.
1925 if test -f intl/libintl.h; then
1926   echo creating libintl.h
1927   echo '#include "intl/libintl.h"' >libintl.h
1928 fi
1929 ],
1930 [
1931 host='${host}'
1932 build='${build}'
1933 target='${target}'
1934 target_alias='${target_alias}'
1935 srcdir='${srcdir}'
1936 subdirs='${subdirs}'
1937 symbolic_link='${symbolic_link}'
1938 program_transform_set='${program_transform_set}'
1939 program_transform_name='${program_transform_name}'
1940 dep_host_xmake_file='${dep_host_xmake_file}'
1941 host_xmake_file='${host_xmake_file}'
1942 dep_tmake_file='${dep_tmake_file}'
1943 tmake_file='${tmake_file}'
1944 thread_file='${thread_file}'
1945 gcc_config_arguments='${gcc_config_arguments}'
1946 gcc_version='${gcc_version}'
1947 gcc_version_full='${gcc_version_full}'
1948 gcc_version_trigger='${gcc_version_trigger}'
1949 local_prefix='${local_prefix}'
1950 build_install_headers_dir='${build_install_headers_dir}'
1951 build_exeext='${build_exeext}'
1952 host_exeext='${host_exeext}'
1953 out_file='${out_file}'
1954 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
1955 SET_MAKE='${SET_MAKE}'
1956 target_list='${target_list}'
1957 target_overrides='${target_overrides}'
1958 host_overrides='${host_overrides}'
1959 cross_defines='${cross_defines}'
1960 cross_overrides='${cross_overrides}'
1961 build_overrides='${build_overrides}'
1962 cpp_install_dir='${cpp_install_dir}'
1963 ])