gcc/configure.in

   1 # configure.in for GNU CC
   2 # Process this file with autoconf to generate a configuration script.
   3
   4 # Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   5
   6 #This file is part of GNU CC.
   7
   8 #GNU CC is free software; you can redistribute it and/or modify
   9 #it under the terms of the GNU General Public License as published by
  10 #the Free Software Foundation; either version 2, or (at your option)
  11 #any later version.
  12
  13 #GNU CC is distributed in the hope that it will be useful,
  14 #but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #GNU General Public License for more details.
  17
  18 #You should have received a copy of the GNU General Public License
  19 #along with GNU CC; see the file COPYING.  If not, write to
  20 #the Free Software Foundation, 59 Temple Place - Suite 330,
  21 #Boston, MA 02111-1307, USA.
  22
  23 # Initialization and defaults
  24 AC_PREREQ(2.13)
  25 AC_INIT(tree.c)
  26 AC_CONFIG_HEADER(auto-host.h:config.in)
  27
  28 remove=rm
  29 hard_link=ln
  30 symbolic_link='ln -s'
  31 copy=cp
  32
  33 # Check for bogus environment variables.
  34 # Test if LIBRARY_PATH contains the notation for the current directory
  35 # since this would lead to problems installing/building glibc.
  36 # LIBRARY_PATH contains the current directory if one of the following
  37 # is true:
  38 # - one of the terminals (":" and ";") is the first or last sign
  39 # - two terminals occur directly after each other
  40 # - the path contains an element with a dot in it
  41 AC_MSG_CHECKING(LIBRARY_PATH variable)
  42 changequote(,)dnl
  43 case ${LIBRARY_PATH} in
  44   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  45     library_path_setting="contains current directory"
  46     ;;
  47   *)
  48     library_path_setting="ok"
  49     ;;
  50 esac
  51 changequote([,])dnl
  52 AC_MSG_RESULT($library_path_setting)
  53 if test "$library_path_setting" != "ok"; then
  54 AC_MSG_ERROR([
  55 *** LIBRARY_PATH shouldn't contain the current directory when
  56 *** building gcc. Please change the environment variable
  57 *** and run configure again.])
  58 fi
  59
  60 # Test if GCC_EXEC_PREFIX contains the notation for the current directory
  61 # since this would lead to problems installing/building glibc.
  62 # GCC_EXEC_PREFIX contains the current directory if one of the following
  63 # is true:
  64 # - one of the terminals (":" and ";") is the first or last sign
  65 # - two terminals occur directly after each other
  66 # - the path contains an element with a dot in it
  67 AC_MSG_CHECKING(GCC_EXEC_PREFIX variable)
  68 changequote(,)dnl
  69 case ${GCC_EXEC_PREFIX} in
  70   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
  71     gcc_exec_prefix_setting="contains current directory"
  72     ;;
  73   *)
  74     gcc_exec_prefix_setting="ok"
  75     ;;
  76 esac
  77 changequote([,])dnl
  78 AC_MSG_RESULT($gcc_exec_prefix_setting)
  79 if test "$gcc_exec_prefix_setting" != "ok"; then
  80 AC_MSG_ERROR([
  81 *** GCC_EXEC_PREFIX shouldn't contain the current directory when
  82 *** building gcc. Please change the environment variable
  83 *** and run configure again.])
  84 fi
  85
  86 # Check for additional parameters
  87
  88 # With GNU ld
  89 AC_ARG_WITH(gnu-ld,
  90 [  --with-gnu-ld           arrange to work with GNU ld.],
  91 gnu_ld_flag="$with_gnu_ld",
  92 gnu_ld_flag=no)
  93
  94 # With pre-defined ld
  95 AC_ARG_WITH(ld,
  96 [  --with-ld               arrange to use the specified ld (full pathname).],
  97 DEFAULT_LINKER="$with_ld")
  98 if test x"${DEFAULT_LINKER+set}" = x"set"; then
  99   if test ! -x "$DEFAULT_LINKER"; then
 100     AC_MSG_WARN([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER])
 101   elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 102     gnu_ld_flag=yes
 103   fi
 104   AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER",
 105         [Define to enable the use of a default linker.])
 106 fi
 107
 108 # With GNU as
 109 AC_ARG_WITH(gnu-as,
 110 [  --with-gnu-as           arrange to work with GNU as.],
 111 gas_flag="$with_gnu_as",
 112 gas_flag=no)
 113
 114 AC_ARG_WITH(as,
 115 [  --with-as               arrange to use the specified as (full pathname).],
 116 DEFAULT_ASSEMBLER="$with_as")
 117 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 118   if test ! -x "$DEFAULT_ASSEMBLER"; then
 119     AC_MSG_WARN([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER])
 120   elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then
 121     gas_flag=yes
 122   fi
 123   AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER",
 124         [Define to enable the use of a default assembler.])
 125 fi
 126
 127 # With stabs
 128 AC_ARG_WITH(stabs,
 129 [  --with-stabs            arrange to use stabs instead of host debug format.],
 130 stabs="$with_stabs",
 131 stabs=no)
 132
 133 # With ELF
 134 AC_ARG_WITH(elf,
 135 [  --with-elf              arrange to use ELF instead of host debug format.],
 136 elf="$with_elf",
 137 elf=no)
 138
 139 # Specify the local prefix
 140 local_prefix=
 141 AC_ARG_WITH(local-prefix,
 142 [  --with-local-prefix=DIR specifies directory to put local include.],
 143 [case "${withval}" in
 144 yes)    AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;;
 145 no)     ;;
 146 *)      local_prefix=$with_local_prefix ;;
 147 esac])
 148
 149 # Default local prefix if it is empty
 150 if test x$local_prefix = x; then
 151         local_prefix=/usr/local
 152 fi
 153
 154 # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only
 155 # passed in by the toplevel make and thus we'd get different behavior
 156 # depending on where we built the sources.
 157 gcc_gxx_include_dir=
 158 # Specify the g++ header file directory
 159 AC_ARG_WITH(gxx-include-dir,
 160 [  --with-gxx-include-dir=DIR
 161                           specifies directory to put g++ header files.],
 162 [case "${withval}" in
 163 yes)    AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;;
 164 no)     ;;
 165 *)      gcc_gxx_include_dir=$with_gxx_include_dir ;;
 166 esac])
 167
 168 if test x${gcc_gxx_include_dir} = x; then
 169   if test x${enable_version_specific_runtime_libs} = xyes; then
 170     gcc_gxx_include_dir='${libsubdir}/include/g++'
 171   else
 172     topsrcdir=${srcdir}/.. . ${srcdir}/../config.if
 173 changequote(<<, >>)dnl
 174     gcc_gxx_include_dir="\$(libsubdir)/\$(unlibsubdir)/..\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/[^/]*|/..|g'\`/include/"${libstdcxx_incdir}
 175 changequote([, ])dnl
 176   fi
 177 fi
 178
 179 # Determine whether or not multilibs are enabled.
 180 AC_ARG_ENABLE(multilib,
 181 [  --enable-multilib      enable library support for multiple ABIs],
 182 [], [enable_multilib=yes])
 183 AC_SUBST(enable_multilib)
 184
 185 # Enable expensive internal checks
 186 AC_ARG_ENABLE(checking,
 187 [  --enable-checking[=LIST]
 188                           enable expensive run-time checks.  With LIST,
 189                           enable only specific categories of checks.
 190                           Categories are: misc,tree,rtl,gc,gcac; default
 191                           is misc,tree,gc],
 192 [ac_checking=
 193 ac_tree_checking=
 194 ac_rtl_checking=
 195 ac_gc_checking=
 196 ac_gc_always_collect=
 197 case "${enableval}" in
 198 yes)    ac_checking=1 ; ac_tree_checking=1 ; ac_gc_checking=1 ;;
 199 no)     ;;
 200 *)      IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 201         set fnord $enableval; shift
 202         IFS="$ac_save_IFS"
 203         for check
 204         do
 205                 case $check in
 206                 misc)   ac_checking=1 ;;
 207                 tree)   ac_tree_checking=1 ;;
 208                 rtl)    ac_rtl_checking=1 ;;
 209                 gc)     ac_gc_checking=1 ;;
 210                 gcac)   ac_gc_always_collect=1 ;;
 211                 *)      AC_MSG_ERROR(unknown check category $check) ;;
 212                 esac
 213         done
 214         ;;
 215 esac
 216 ],
 217 # Enable some checks by default for development versions of GCC
 218 [ac_checking=1; ac_tree_checking=1; ac_gc_checking=1;])
 219 if test x$ac_checking != x ; then
 220   AC_DEFINE(ENABLE_CHECKING, 1,
 221 [Define if you want more run-time sanity checks.  This one gets a grab
 222    bag of miscellaneous but relatively cheap checks.])
 223 fi
 224 if test x$ac_tree_checking != x ; then
 225   AC_DEFINE(ENABLE_TREE_CHECKING, 1,
 226 [Define if you want all operations on trees (the basic data
 227    structure of the front ends) to be checked for dynamic type safety
 228    at runtime.  This is moderately expensive.])
 229 fi
 230 if test x$ac_rtl_checking != x ; then
 231   AC_DEFINE(ENABLE_RTL_CHECKING, 1,
 232 [Define if you want all operations on RTL (the basic data structure
 233    of the optimizer and back end) to be checked for dynamic type safety
 234    at runtime.  This is quite expensive.])
 235 fi
 236 if test x$ac_gc_checking != x ; then
 237   AC_DEFINE(ENABLE_GC_CHECKING, 1,
 238 [Define if you want the garbage collector to do object poisoning and
 239    other memory allocation checks.  This is quite expensive.])
 240 fi
 241 if test x$ac_gc_always_collect != x ; then
 242   AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1,
 243 [Define if you want the garbage collector to operate in maximally
 244    paranoid mode, validating the entire heap and collecting garbage at
 245    every opportunity.  This is extremely expensive.])
 246 fi
 247
 248
 249 AC_ARG_ENABLE(cpp,
 250 [  --disable-cpp           don't provide a user-visible C preprocessor.],
 251 [], [enable_cpp=yes])
 252
 253 AC_ARG_WITH(cpp_install_dir,
 254 [  --with-cpp-install-dir=DIR
 255                           install the user visible C preprocessor in DIR
 256                           (relative to PREFIX) as well as PREFIX/bin.],
 257 [if test x$withval = xyes; then
 258   AC_MSG_ERROR([option --with-cpp-install-dir requires an argument])
 259 elif test x$withval != xno; then
 260   cpp_install_dir=$withval
 261 fi])
 262
 263 # Enable Multibyte Characters for C/C++
 264 AC_ARG_ENABLE(c-mbchar,
 265 [  --enable-c-mbchar       Enable multibyte characters for C and C++.],
 266 if test x$enable_c_mbchar != xno; then
 267   AC_DEFINE(MULTIBYTE_CHARS, 1,
 268   [Define if you want the C and C++ compilers to support multibyte
 269    character sets for source code.])
 270 fi)
 271
 272 # Enable threads
 273 # Pass with no value to take the default
 274 # Pass with a value to specify a thread package
 275 AC_ARG_ENABLE(threads,
 276 [  --enable-threads        enable thread usage for target GCC.
 277   --enable-threads=LIB    use LIB thread package for target GCC.],,
 278 enable_threads='')
 279
 280 enable_threads_flag=$enable_threads
 281 # Check if a valid thread package
 282 case x${enable_threads_flag} in
 283         x | xno)
 284                 # No threads
 285                 target_thread_file='single'
 286                 ;;
 287         xyes)
 288                 # default
 289                 target_thread_file=''
 290                 ;;
 291         xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
 292         xsolaris | xwin32 | xdce | xvxworks | xaix)
 293                 target_thread_file=$enable_threads_flag
 294                 ;;
 295         *)
 296                 echo "$enable_threads is an unknown thread package" 1>&2
 297                 exit 1
 298                 ;;
 299 esac
 300
 301 AC_ARG_ENABLE(objc-gc,
 302 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
 303                           the GNU Objective-C runtime.],
 304 if test x$enable_objc_gc = xno; then
 305         objc_boehm_gc=''
 306 else
 307         objc_boehm_gc=1
 308 fi,
 309 objc_boehm_gc='')
 310
 311 AC_ARG_WITH(dwarf2,
 312 [  --with-dwarf2          force the default debug format to be DWARF2.],
 313 dwarf2="$with_dwarf2",
 314 dwarf2=no)
 315
 316 AC_ARG_ENABLE(shared,
 317 [  --disable-shared       don't provide a shared libgcc.],
 318 [
 319   case $enable_shared in
 320   yes | no) ;;
 321   *)
 322     enable_shared=no
 323     IFS="${IFS=         }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
 324     for pkg in $enableval; do
 325       if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
 326         enable_shared=yes
 327       fi
 328     done
 329     IFS="$ac_save_ifs"
 330     ;;
 331   esac
 332 ], [enable_shared=yes])
 333 AC_SUBST(enable_shared)
 334
 335 # Determine the host, build, and target systems
 336 AC_CANONICAL_SYSTEM
 337
 338 # Find the native compiler
 339 AC_PROG_CC
 340 AC_PROG_CC_C_O
 341 # autoconf is lame and doesn't give us any substitution variable for this.
 342 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 343   NO_MINUS_C_MINUS_O=yes
 344 else
 345   OUTPUT_OPTION='-o $@'
 346 fi
 347 AC_SUBST(NO_MINUS_C_MINUS_O)
 348 AC_SUBST(OUTPUT_OPTION)
 349
 350 AC_CACHE_CHECK(whether ${CC-cc} accepts -Wno-long-long,
 351 ac_cv_prog_cc_no_long_long,
 352 [save_CFLAGS="$CFLAGS"
 353 CFLAGS="-Wno-long-long"
 354 AC_TRY_COMPILE(,,ac_cv_prog_cc_no_long_long=yes,
 355                ac_cv_prog_cc_no_long_long=no)
 356 CFLAGS="$save_CFLAGS"])
 357 strict1_warn=
 358 if test $ac_cv_prog_cc_no_long_long = yes; then
 359   strict1_warn="-pedantic -Wno-long-long"
 360 fi
 361 AC_SUBST(strict1_warn)
 362
 363 AC_PROG_CPP
 364 AC_C_INLINE
 365 gcc_AC_C_VOLATILE
 366
 367 gcc_AC_C_LONG_DOUBLE
 368 gcc_AC_C_LONG_LONG
 369
 370 # sizeof(char) is 1 by definition.
 371 gcc_AC_COMPILE_CHECK_SIZEOF(short)
 372 gcc_AC_COMPILE_CHECK_SIZEOF(int)
 373 gcc_AC_COMPILE_CHECK_SIZEOF(long)
 374 if test $ac_cv_c_long_long = yes; then
 375   gcc_AC_COMPILE_CHECK_SIZEOF(long long)
 376 fi
 377 if test $ac_cv_c___int64 = yes; then
 378   gcc_AC_COMPILE_CHECK_SIZEOF(__int64)
 379 fi
 380
 381 gcc_AC_C_CHARSET
 382
 383 # If the native compiler is GCC, we can enable warnings even in stage1.
 384 # That's useful for people building cross-compilers, or just running a
 385 # quick `make'.
 386 warn_cflags=
 387 if test "x$GCC" = "xyes"; then
 388   warn_cflags='$(GCC_WARN_CFLAGS)'
 389 fi
 390 AC_SUBST(warn_cflags)
 391
 392 # Stage specific cflags for build.
 393 stage1_cflags=
 394 case $build in
 395 vax-*-*)
 396   if test x$GCC = xyes
 397   then
 398     stage1_cflags="-Wa,-J"
 399   else
 400     stage1_cflags="-J"
 401   fi
 402   ;;
 403 esac
 404 AC_SUBST(stage1_cflags)
 405
 406 AC_PROG_MAKE_SET
 407
 408 AC_MSG_CHECKING([whether a default assembler was specified])
 409 if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then
 410     if test x"$gas_flag" = x"no"; then
 411         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)])
 412     else
 413         AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)])
 414     fi
 415 else
 416     AC_MSG_RESULT(no)
 417 fi
 418
 419 AC_MSG_CHECKING([whether a default linker was specified])
 420 if test x"${DEFAULT_LINKER+set}" = x"set"; then
 421     if test x"$gnu_ld_flag" = x"no"; then
 422         AC_MSG_RESULT([yes ($DEFAULT_LINKER)])
 423     else
 424         AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)])
 425     fi
 426 else
 427     AC_MSG_RESULT(no)
 428 fi
 429
 430 AC_MSG_CHECKING(for GNU C library)
 431 AC_CACHE_VAL(gcc_cv_glibc,
 432 [AC_TRY_COMPILE(
 433   [#include <features.h>],[
 434 #if ! (defined __GLIBC__ || defined __GNU_LIBRARY__)
 435 #error Not a GNU C library system
 436 #endif],
 437   [gcc_cv_glibc=yes],
 438   gcc_cv_glibc=no)])
 439 AC_MSG_RESULT($gcc_cv_glibc)
 440 if test $gcc_cv_glibc = yes; then
 441   AC_DEFINE(_GNU_SOURCE, 1, [Always define this when using the GNU C Library])
 442 fi
 443
 444 # Find some useful tools
 445 AC_PROG_AWK
 446 gcc_AC_PROG_LN
 447 gcc_AC_PROG_LN_S
 448 AC_PROG_RANLIB
 449 gcc_AC_PROG_INSTALL
 450
 451 AC_HEADER_STDC
 452 AC_HEADER_TIME
 453 gcc_AC_HEADER_STRING
 454 AC_HEADER_SYS_WAIT
 455 AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h \
 456                  fcntl.h unistd.h stab.h sys/file.h sys/time.h \
 457                  sys/resource.h sys/param.h sys/times.h sys/stat.h \
 458                  direct.h malloc.h langinfo.h iconv.h stdbool.h)
 459
 460 # Check for thread headers.
 461 AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=])
 462 AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=])
 463
 464 # These tests can't be done till we know if we have limits.h.
 465 gcc_AC_C_CHAR_BIT
 466 gcc_AC_C_COMPILE_ENDIAN
 467 gcc_AC_C_FLOAT_FORMAT
 468
 469 # See if GNAT has been installed
 470 AC_CHECK_PROG(have_gnat, gnatbind, yes, no)
 471
 472 # See if we have the mktemp command.
 473 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 474
 475 # Do we have a single-tree copy of texinfo?
 476 if test -f $srcdir/../texinfo/Makefile.in; then
 477   MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
 478   gcc_cv_prog_makeinfo_modern=yes
 479   AC_MSG_RESULT([Using makeinfo from the unified source tree.])
 480 else
 481   # See if makeinfo has been installed and is modern enough
 482   # that we can use it.
 483   gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
 484   [GNU texinfo.* \([0-9][0-9.]*\)],
 485   [4.*])
 486 fi
 487
 488 if test $gcc_cv_prog_makeinfo_modern = no; then
 489   AC_MSG_WARN([
 490 *** Makeinfo is missing or too old.
 491 *** Info documentation will not be built.])
 492   BUILD_INFO=
 493 else
 494   BUILD_INFO=info               AC_SUBST(BUILD_INFO)
 495 fi
 496
 497 # Is pod2man recent enough to regenerate manpages?
 498 AC_MSG_CHECKING([for recent Pod::Man])
 499 if perl -e 'use 1.10 Pod::Man' >/dev/null 2>&1; then
 500   AC_MSG_RESULT(yes)
 501   GENERATED_MANPAGES=generated-manpages         AC_SUBST(GENERATED_MANPAGES)
 502 else
 503   AC_MSG_RESULT(no)
 504   GENERATED_MANPAGES=
 505 fi
 506
 507 # How about lex?
 508 dnl Don't use AC_PROG_LEX; we insist on flex.
 509 dnl LEXLIB is not useful in gcc.
 510 if test -f $srcdir/../flex/skel.c; then
 511   FLEX='$(objdir)/../flex/flex'
 512 else
 513   AC_CHECK_PROG(FLEX, flex, flex, false)
 514 fi
 515
 516 # Bison?
 517 # The -L switch is so bison can find its skeleton file.
 518 if test -f $srcdir/../bison/bison.simple; then
 519   BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
 520 else
 521   AC_CHECK_PROG(BISON, bison, bison, false)
 522 fi
 523
 524 # See if the stage1 system preprocessor understands the ANSI C
 525 # preprocessor stringification operator.  (Used by symcat.h.)
 526 AC_C_STRINGIZE
 527
 528 # Use <inttypes.h> only if it exists,
 529 # doesn't clash with <sys/types.h>, and declares intmax_t.
 530 AC_MSG_CHECKING(for inttypes.h)
 531 AC_CACHE_VAL(gcc_cv_header_inttypes_h,
 532 [AC_TRY_COMPILE(
 533   [#include <sys/types.h>
 534 #include <inttypes.h>],
 535   [intmax_t i = -1;],
 536   [gcc_cv_header_inttypes_h=yes],
 537   gcc_cv_header_inttypes_h=no)])
 538 AC_MSG_RESULT($gcc_cv_header_inttypes_h)
 539 if test $gcc_cv_header_inttypes_h = yes; then
 540   AC_DEFINE(HAVE_INTTYPES_H, 1,
 541         [Define if you have a working <inttypes.h> header file.])
 542 fi
 543
 544 dnl Disabled until we have a complete test for buggy enum bitfields.
 545 dnl gcc_AC_C_ENUM_BF_UNSIGNED
 546
 547 AC_CHECK_FUNCS(strtoul bsearch popen times clock \
 548         strchr strrchr kill getrlimit setrlimit atoll atoq \
 549         sysconf isascii gettimeofday strsignal putc_unlocked fputc_unlocked \
 550         fputs_unlocked getrusage iconv nl_langinfo lstat)
 551
 552 AC_CHECK_TYPE(ssize_t, int)
 553
 554 # Try to determine the array type of the second argument of getgroups
 555 # for the target system (int or gid_t).
 556 AC_TYPE_GETGROUPS
 557 if test "${target}" = "${build}"; then
 558   TARGET_GETGROUPS_T=$ac_cv_type_getgroups
 559 else
 560   case "${target}" in
 561         # This condition may need some tweaking.  It should include all
 562         # targets where the array type of the second argument of getgroups
 563         # is int and the type of gid_t is not equivalent to int.
 564         *-*-sunos* | *-*-ultrix*)
 565                 TARGET_GETGROUPS_T=int
 566                 ;;
 567         *)
 568                 TARGET_GETGROUPS_T=gid_t
 569                 ;;
 570   esac
 571 fi
 572 AC_SUBST(TARGET_GETGROUPS_T)
 573
 574 gcc_AC_FUNC_VFPRINTF_DOPRNT
 575 gcc_AC_FUNC_STRSTR
 576 gcc_AC_FUNC_PRINTF_PTR
 577
 578 case "${host}" in
 579 *-*-uwin*)
 580   AC_MSG_ERROR([
 581 *** UWIN may not be used as a host platform because
 582 *** linking with posix.dll is not allowed by the GNU GPL])
 583   ;;
 584 esac
 585 AC_FUNC_VFORK
 586 AC_FUNC_MMAP_ANYWHERE
 587 AC_FUNC_MMAP_FILE
 588
 589 # We will need to find libiberty.h and ansidecl.h
 590 saved_CFLAGS="$CFLAGS"
 591 CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include"
 592 gcc_AC_CHECK_DECLS(getenv atol sbrk abort atof getcwd getwd \
 593         strsignal putc_unlocked fputs_unlocked strstr environ errno \
 594         malloc realloc calloc free basename getopt clock, , ,[
 595 #include "ansidecl.h"
 596 #include "system.h"])
 597
 598 gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[
 599 #include "ansidecl.h"
 600 #include "system.h"
 601 #ifdef HAVE_SYS_RESOURCE_H
 602 #include <sys/resource.h>
 603 #endif
 604 ])
 605
 606 gcc_AC_CHECK_DECLS(times, , ,[
 607 #include "ansidecl.h"
 608 #include "system.h"
 609 #ifdef HAVE_SYS_TIMES_H
 610 #include <sys/times.h>
 611 #endif
 612 ])
 613
 614 # More time-related stuff.
 615 AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
 616 AC_TRY_COMPILE([
 617 #include "ansidecl.h"
 618 #include "system.h"
 619 #ifdef HAVE_SYS_TIMES_H
 620 #include <sys/times.h>
 621 #endif
 622 ], [struct tms tms;], ac_cv_struct_tms=yes, ac_cv_struct_tms=no)])
 623 if test $ac_cv_struct_tms = yes; then
 624   AC_DEFINE(HAVE_STRUCT_TMS, 1,
 625   [Define if <sys/times.h> defines struct tms.])
 626 fi
 627
 628 # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE.
 629 # revisit after autoconf 2.50.
 630 AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [
 631 AC_TRY_COMPILE([
 632 #include "ansidecl.h"
 633 #include "system.h"
 634 ], [clock_t x;], gcc_cv_type_clock_t=yes, gcc_cv_type_clock_t=no)])
 635 if test $gcc_cv_type_clock_t = yes; then
 636   AC_DEFINE(HAVE_CLOCK_T, 1,
 637   [Define if <time.h> defines clock_t.])
 638 fi
 639
 640 # Restore CFLAGS from before the gcc_AC_NEED_DECLARATIONS tests.
 641 CFLAGS="$saved_CFLAGS"
 642
 643 # mkdir takes a single argument on some systems.
 644 gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG
 645
 646 # File extensions
 647 manext='.1'
 648 objext='.o'
 649 AC_SUBST(manext)
 650 AC_SUBST(objext)
 651
 652 build_xm_file=
 653 build_xm_defines=
 654 build_install_headers_dir=install-headers-tar
 655 build_exeext=
 656 host_xm_file=
 657 host_xm_defines=
 658 host_xmake_file=
 659 host_truncate_target=
 660 host_exeext=
 661
 662 # Decode the host machine, then the target machine.
 663 # For the host machine, we save the xm_file variable as host_xm_file;
 664 # then we decode the target machine and forget everything else
 665 # that came from the host machine.
 666 for machine in $build $host $target; do
 667         . ${srcdir}/config.gcc
 668 done
 669
 670 extra_objs="${host_extra_objs} ${extra_objs}"
 671
 672 # Default the target-machine variables that were not explicitly set.
 673 if test x"$tm_file" = x
 674 then tm_file=$cpu_type/$cpu_type.h; fi
 675
 676 if test x"$extra_headers" = x
 677 then extra_headers=; fi
 678
 679 if test x$md_file = x
 680 then md_file=$cpu_type/$cpu_type.md; fi
 681
 682 if test x$out_file = x
 683 then out_file=$cpu_type/$cpu_type.c; fi
 684
 685 if test x"$tmake_file" = x
 686 then tmake_file=$cpu_type/t-$cpu_type
 687 fi
 688
 689 if test x"$dwarf2" = xyes
 690 then tm_file="$tm_file tm-dwarf2.h"
 691 fi
 692
 693 if test x$float_format = x
 694 then float_format=i64
 695 fi
 696
 697 if test $float_format = none
 698 then float_h_file=Makefile.in
 699 else float_h_file=float-$float_format.h
 700 fi
 701
 702 # Handle cpp installation.
 703 if test x$enable_cpp != xno
 704 then
 705   tmake_file="$tmake_file t-install-cpp"
 706 fi
 707
 708 # Say what files are being used for the output code and MD file.
 709 echo "Using \`$srcdir/config/$out_file' for machine-specific logic."
 710 echo "Using \`$srcdir/config/$md_file' as machine description file."
 711
 712 # If any of the xm_file variables contain nonexistent files, warn
 713 # about them and drop them.
 714
 715 changequote(,)dnl
 716 bx=
 717 for x in $build_xm_file; do
 718   if    test -f $srcdir/config/$x
 719   then      bx="$bx $x"
 720   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 721   fi
 722 done
 723 build_xm_file="$bx"
 724
 725 hx=
 726 for x in $host_xm_file; do
 727   if    test -f $srcdir/config/$x
 728   then      hx="$hx $x"
 729   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 730   fi
 731 done
 732 host_xm_file="$hx"
 733
 734 tx=
 735 for x in $xm_file; do
 736   if    test -f $srcdir/config/$x
 737   then      tx="$tx $x"
 738   else      AC_MSG_WARN($srcdir/config/$x does not exist.)
 739   fi
 740 done
 741 xm_file="$tx"
 742 changequote([,])dnl
 743
 744 count=a
 745 for f in $tm_file; do
 746         count=${count}x
 747 done
 748 if test $count = ax; then
 749         echo "Using \`$srcdir/config/$tm_file' as target machine macro file."
 750 else
 751         echo "Using the following target machine macro files:"
 752         for f in $tm_file; do
 753                 echo "  $srcdir/config/$f"
 754         done
 755 fi
 756
 757 count=a
 758 for f in $host_xm_file; do
 759         count=${count}x
 760 done
 761 if test $count = a; then
 762         :
 763 elif test $count = ax; then
 764         echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file."
 765 else
 766         echo "Using the following host machine macro files:"
 767         for f in $host_xm_file; do
 768                 echo "  $srcdir/config/$f"
 769         done
 770 fi
 771
 772 if test "$host_xm_file" != "$build_xm_file"; then
 773         count=a
 774         for f in $build_xm_file; do
 775                 count=${count}x
 776         done
 777         if test $count = a; then
 778                 :
 779         elif test $count = ax; then
 780                 echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file."
 781         else
 782                 echo "Using the following build machine macro files:"
 783                 for f in $build_xm_file; do
 784                         echo "  $srcdir/config/$f"
 785                 done
 786         fi
 787 fi
 788
 789 if test x$thread_file = x; then
 790         if test x$target_thread_file != x; then
 791                 thread_file=$target_thread_file
 792         else
 793                 thread_file='single'
 794         fi
 795 fi
 796
 797 # auto-host.h is the file containing items generated by autoconf and is
 798 # the first file included by config.h.
 799 # If host=build, it is correct to have hconfig include auto-host.h
 800 # as well.  If host!=build, we are in error and need to do more
 801 # work to find out the build config parameters.
 802 if test x$host = x$build
 803 then
 804         build_auto=auto-host.h
 805 else
 806         # We create a subdir, then run autoconf in the subdir.
 807         # To prevent recursion we set host and build for the new
 808         # invocation of configure to the build for this invocation
 809         # of configure.
 810         tempdir=build.$$
 811         rm -rf $tempdir
 812         mkdir $tempdir
 813         cd $tempdir
 814         case ${srcdir} in
 815         /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
 816         *) realsrcdir=../${srcdir};;
 817         esac
 818         CC=${CC_FOR_BUILD} ${realsrcdir}/configure \
 819                 --target=$target --host=$build --build=$build
 820
 821         # We just finished tests for the build machine, so rename
 822         # the file auto-build.h in the gcc directory.
 823         mv auto-host.h ../auto-build.h
 824         cd ..
 825         rm -rf $tempdir
 826         build_auto=auto-build.h
 827 fi
 828
 829 tm_file="${tm_file} defaults.h"
 830 host_xm_file="auto-host.h ansidecl.h ${host_xm_file} ${tm_file}"
 831 build_xm_file="${build_auto} ansidecl.h ${build_xm_file} ${tm_file}"
 832 xm_file="ansidecl.h ${xm_file} ${tm_file}"
 833
 834 # Truncate the target if necessary
 835 if test x$host_truncate_target != x; then
 836         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
 837 fi
 838
 839 # Get the version trigger filename from the toplevel
 840 if test "${with_gcc_version_trigger+set}" = set; then
 841         gcc_version_trigger=$with_gcc_version_trigger
 842 else
 843         gcc_version_trigger=${srcdir}/version.c
 844 fi
 845 changequote(,)dnl
 846 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 847 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
 848
 849 # Compile in configure arguments.
 850 if test -f configargs.h ; then
 851         # Being re-configured.
 852         gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
 853         gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS"
 854 else
 855         gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS"
 856 fi
 857 cat > configargs.h <<EOF
 858 /* Generated automatically. */
 859 static const char configuration_arguments[] = "$gcc_config_arguments";
 860 EOF
 861 changequote([,])dnl
 862
 863 # Internationalization
 864 PACKAGE=gcc
 865 VERSION="$gcc_version"
 866 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE",
 867         [Define to the name of the distribution.])
 868 AC_DEFINE_UNQUOTED(VERSION, "$VERSION",
 869         [Define to the version of the distribution.])
 870 AC_SUBST(PACKAGE)
 871 AC_SUBST(VERSION)
 872
 873 ALL_LINGUAS="sv"
 874
 875 # Enable NLS support by default
 876 AC_ARG_ENABLE(nls,
 877   [  --enable-nls            use Native Language Support (default)],
 878   , enable_nls=yes)
 879
 880 # if cross compiling, disable NLS support.
 881 # It's not worth the trouble, at least for now.
 882
 883 if test "${build}" != "${host}" && test "x$enable_nls" = "xyes"; then
 884   AC_MSG_WARN(Disabling NLS support for canadian cross compiler.)
 885   enable_nls=no
 886 fi
 887
 888 # if NLS is enabled, also enable check in po subdir
 889 if test $enable_nls = yes; then
 890   CHECK_PO=check-po
 891 else
 892   CHECK_PO=""
 893 fi
 894
 895 AC_SUBST(CHECK_PO)
 896
 897 AM_GNU_GETTEXT
 898 XGETTEXT="AWK='$AWK' \$(SHELL) \$(top_srcdir)/exgettext $XGETTEXT"
 899
 900 # Windows32 Registry support for specifying GCC installation paths.
 901 AC_ARG_ENABLE(win32-registry,
 902 [  --disable-win32-registry
 903                           Disable lookup of installation paths in the
 904                          Registry on Windows hosts.
 905   --enable-win32-registry Enable registry lookup (default).
 906   --enable-win32-registry=KEY
 907                           Use KEY instead of GCC version as the last portion
 908                          of the registry key.],,)
 909
 910 AC_MSG_CHECKING(whether windows registry support is requested)
 911 if test x$enable_win32_registry != xno; then
 912   AC_DEFINE(ENABLE_WIN32_REGISTRY, 1,
 913 [Define to 1 if installation paths should be looked up in Windows32
 914    Registry. Ignored on non windows32 hosts.])
 915   AC_MSG_RESULT(yes)
 916 else
 917   AC_MSG_RESULT(no)
 918 fi
 919
 920 # Check if user specified a different registry key.
 921 case x${enable_win32_registry} in
 922 x | xyes)
 923   # default.
 924   gcc_cv_win32_registry_key="$VERSION"
 925   ;;
 926 xno)
 927   # no registry lookup.
 928   gcc_cv_win32_registry_key=''
 929   ;;
 930 *)
 931   # user-specified key.
 932   gcc_cv_win32_registry_key="$enable_win32_registry"
 933   ;;
 934 esac
 935
 936 if test x$enable_win32_registry != xno; then
 937   AC_MSG_CHECKING(registry key on windows hosts)
 938   AC_DEFINE_UNQUOTED(WIN32_REGISTRY_KEY, "$gcc_cv_win32_registry_key",
 939         [Define to be the last portion of registry key on windows hosts.])
 940   AC_MSG_RESULT($gcc_cv_win32_registry_key)
 941 fi
 942
 943 # Get an absolute path to the GCC top-level source directory
 944 holddir=`pwd`
 945 cd $srcdir
 946 topdir=`pwd`
 947 cd $holddir
 948
 949 # Conditionalize the makefile for this host machine.
 950 # Make-host contains the concatenation of all host makefile fragments
 951 # [there can be more than one].  This file is built by configure.frag.
 952 host_overrides=Make-host
 953 dep_host_xmake_file=
 954 for f in .. ${host_xmake_file}
 955 do
 956         if test -f ${srcdir}/config/$f
 957         then
 958                 dep_host_xmake_file="${dep_host_xmake_file} ${srcdir}/config/$f"
 959         fi
 960 done
 961
 962 # Conditionalize the makefile for this target machine.
 963 # Make-target contains the concatenation of all host makefile fragments
 964 # [there can be more than one].  This file is built by configure.frag.
 965 target_overrides=Make-target
 966 dep_tmake_file=
 967 for f in .. ${tmake_file}
 968 do
 969         if test -f ${srcdir}/config/$f
 970         then
 971                 dep_tmake_file="${dep_tmake_file} ${srcdir}/config/$f"
 972         fi
 973 done
 974
 975 # If the host doesn't support symlinks, modify CC in
 976 # FLAGS_TO_PASS so CC="stage1/xgcc -Bstage1/" works.
 977 # Otherwise, we can use "CC=$(CC)".
 978 rm -f symtest.tem
 979 if $symbolic_link $srcdir/gcc.c symtest.tem 2>/dev/null
 980 then
 981         cc_set_by_configure="\$(CC)"
 982         quoted_cc_set_by_configure="\$(CC)"
 983         stage_prefix_set_by_configure="\$(STAGE_PREFIX)"
 984 else
 985         rm -f symtest.tem
 986         if cp -p $srcdir/gcc.c symtest.tem 2>/dev/null
 987         then
 988                 symbolic_link="cp -p"
 989         else
 990                 symbolic_link="cp"
 991         fi
 992         cc_set_by_configure="\`case '\$(CC)' in stage*) echo '\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\$(CC)';; esac\`"
 993         quoted_cc_set_by_configure="\\\`case '\\\$(CC)' in stage*) echo '\\\$(CC)' | sed -e 's|stage|../stage|g';; *) echo '\\\$(CC)';; esac\\\`"
 994         stage_prefix_set_by_configure="\`case '\$(STAGE_PREFIX)' in stage*) echo '\$(STAGE_PREFIX)' | sed -e 's|stage|../stage|g';; *) echo '\$(STAGE_PREFIX)';; esac\`"
 995 fi
 996 rm -f symtest.tem
 997
 998 out_object_file=`basename $out_file .c`.o
 999
1000 tm_file_list=
1001 for f in $tm_file; do
1002   case $f in
1003     ansidecl.h )
1004        tm_file_list="${tm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1005     defaults.h )
1006        tm_file_list="${tm_file_list} $f" ;;
1007     *) tm_file_list="${tm_file_list} \$(srcdir)/config/$f" ;;
1008   esac
1009 done
1010
1011 tm_p_file_list=
1012 for f in $tm_p_file; do
1013     tm_p_file_list="${tm_p_file_list} \$(srcdir)/config/$f"
1014 done
1015
1016 host_xm_file_list=
1017 for f in $host_xm_file; do
1018   case $f in
1019     ansidecl.h )
1020        host_xm_file_list="${host_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1021     auto-host.h | defaults.h )
1022        host_xm_file_list="${host_xm_file_list} $f" ;;
1023     *) host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f" ;;
1024   esac
1025 done
1026
1027 build_xm_file_list=
1028 for f in $build_xm_file; do
1029   case $f in
1030     ansidecl.h )
1031        build_xm_file_list="${build_xm_file_list} \$(srcdir)/../include/ansidecl.h" ;;
1032     auto-build.h | auto-host.h | defaults.h )
1033        build_xm_file_list="${build_xm_file_list} $f" ;;
1034     *) build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f" ;;
1035   esac
1036 done
1037
1038 # Define macro CROSS_COMPILE in compilation
1039 # if this is a cross-compiler.
1040 # Also use all.cross instead of all.internal
1041 # and add cross-make to Makefile.
1042 cross_overrides="/dev/null"
1043 if test x$host != x$target
1044 then
1045         cross_defines="CROSS=-DCROSS_COMPILE"
1046         cross_overrides="${topdir}/cross-make"
1047 fi
1048
1049 # If this is a cross-compiler that does not
1050 # have its own set of headers then define
1051 # inhibit_libc
1052
1053 # If this is using newlib, then define inhibit_libc in
1054 # LIBGCC2_CFLAGS.  This will cause __eprintf to be left out of
1055 # libgcc.a, but that's OK because newlib should have its own version of
1056 # assert.h.
1057 inhibit_libc=
1058 if [test x$host != x$target] && [test x$with_headers = x]; then
1059        inhibit_libc=-Dinhibit_libc
1060 else
1061        if [test x$with_newlib = xyes]; then
1062                inhibit_libc=-Dinhibit_libc
1063        fi
1064 fi
1065 AC_SUBST(inhibit_libc)
1066
1067 # When building gcc with a cross-compiler, we need to fix a few things.
1068 # This must come after cross-make as we want all.build to override
1069 # all.cross.
1070 build_overrides="/dev/null"
1071 if test x$build != x$host
1072 then
1073         build_overrides="${topdir}/build-make"
1074 fi
1075
1076 # Expand extra_headers to include complete path.
1077 # This substitutes for lots of t-* files.
1078 extra_headers_list=
1079 if test "x$extra_headers" = x
1080 then true
1081 else
1082         # Prepend ${srcdir}/ginclude/ to every entry in extra_headers.
1083         for file in $extra_headers;
1084         do
1085                 extra_headers_list="${extra_headers_list} \$(srcdir)/ginclude/${file}"
1086         done
1087 fi
1088
1089 if test x$use_collect2 = xno; then
1090         use_collect2=
1091 fi
1092
1093 # Add a definition of USE_COLLECT2 if system wants one.
1094 # Also tell toplev.c what to do.
1095 # This substitutes for lots of t-* files.
1096 if test x$use_collect2 = x
1097 then
1098         will_use_collect2=
1099         maybe_use_collect2=
1100 else
1101         will_use_collect2="collect2"
1102         maybe_use_collect2="-DUSE_COLLECT2"
1103 fi
1104
1105 # If we have gas in the build tree, make a link to it.
1106 if test -f ../gas/Makefile; then
1107         rm -f as; $symbolic_link ../gas/as-new$host_exeext as$host_exeext 2>/dev/null
1108 fi
1109
1110 # If we have nm in the build tree, make a link to it.
1111 if test -f ../binutils/Makefile; then
1112         rm -f nm; $symbolic_link ../binutils/nm-new$host_exeext nm$host_exeext 2>/dev/null
1113 fi
1114
1115 # If we have ld in the build tree, make a link to it.
1116 if test -f ../ld/Makefile; then
1117 #       if test x$use_collect2 = x; then
1118 #               rm -f ld; $symbolic_link ../ld/ld-new$host_exeext ld$host_exeext 2>/dev/null
1119 #       else
1120                 rm -f collect-ld; $symbolic_link ../ld/ld-new$host_exeext collect-ld$host_exeext 2>/dev/null
1121 #       fi
1122 fi
1123
1124 # Figure out what assembler we will be using.
1125 AC_MSG_CHECKING(what assembler to use)
1126 gcc_cv_as=
1127 gcc_cv_gas_major_version=
1128 gcc_cv_gas_minor_version=
1129 gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas
1130 if test -x "$DEFAULT_ASSEMBLER"; then
1131         gcc_cv_as="$DEFAULT_ASSEMBLER"
1132 elif test -x "$AS"; then
1133         gcc_cv_as="$AS"
1134 elif test -x as$host_exeext; then
1135         # Build using assembler in the current directory.
1136         gcc_cv_as=./as$host_exeext
1137 elif test -f $gcc_cv_as_gas_srcdir/configure.in -a -f ../gas/Makefile; then
1138         # Single tree build which includes gas.
1139         for f in $gcc_cv_as_gas_srcdir/configure $gcc_cv_as_gas_srcdir/configure.in $gcc_cv_as_gas_srcdir/Makefile.in
1140         do
1141 changequote(,)dnl
1142                 gcc_cv_gas_version=`grep '^VERSION=[0-9]*\.[0-9]*' $f`
1143 changequote([,])dnl
1144                 if test x$gcc_cv_gas_version != x; then
1145                         break
1146                 fi
1147         done
1148 changequote(,)dnl
1149         gcc_cv_gas_major_version=`expr "$gcc_cv_gas_version" : "VERSION=\([0-9]*\)"`
1150         gcc_cv_gas_minor_version=`expr "$gcc_cv_gas_version" : "VERSION=[0-9]*\.\([0-9]*\)"`
1151 changequote([,])dnl
1152 fi
1153
1154 if test "x$gcc_cv_as" = x -a x$host = x$target; then
1155         # Native build.
1156         # Search the same directories that the installed compiler will
1157         # search.  Else we may find the wrong assembler and lose.  If we
1158         # do not find a suitable assembler binary, then try the user's
1159         # path.
1160         #
1161         # Also note we have to check MD_EXEC_PREFIX before checking the
1162         # user's path.  Unfortunately, there is no good way to get at the
1163         # value of MD_EXEC_PREFIX here.  So we do a brute force search
1164         # through all the known MD_EXEC_PREFIX values.  Ugh.  This needs
1165         # to be fixed as part of the make/configure rewrite too.
1166
1167         if test "x$exec_prefix" = xNONE; then
1168                 if test "x$prefix" = xNONE; then
1169                         test_prefix=/usr/local
1170                 else
1171                         test_prefix=$prefix
1172                 fi
1173         else
1174                 test_prefix=$exec_prefix
1175         fi
1176
1177         # If the loop below does not find an assembler, then use whatever
1178         # one we can find in the users's path.
1179         # user's path.
1180         gcc_cv_as=as$host_exeext
1181
1182         test_dirs="$test_prefix/lib/gcc-lib/$target/$gcc_version \
1183                    $test_prefix/lib/gcc-lib/$target \
1184                    /usr/lib/gcc/$target/$gcc_version \
1185                    /usr/lib/gcc/$target \
1186                    $test_prefix/$target/bin/$target/$gcc_version \
1187                    $test_prefix/$target/bin \
1188                    /usr/libexec \
1189                    /usr/ccs/gcc \
1190                    /usr/ccs/bin \
1191                    /udk/usr/ccs/bin \
1192                    /bsd43/usr/lib/cmplrs/cc \
1193                    /usr/cross64/usr/bin \
1194                    /usr/lib/cmplrs/cc \
1195                    /sysv/usr/lib/cmplrs/cc \
1196                    /svr4/usr/lib/cmplrs/cc \
1197                    /usr/bin"
1198
1199         for dir in $test_dirs; do
1200                 if test -f $dir/as$host_exeext; then
1201                         gcc_cv_as=$dir/as$host_exeext
1202                         break;
1203                 fi
1204         done
1205 fi
1206 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1207   AC_MSG_RESULT("newly built gas")
1208 else
1209   AC_MSG_RESULT($gcc_cv_as)
1210 fi
1211
1212 # Figure out what nm we will be using.
1213 AC_MSG_CHECKING(what nm to use)
1214 if test -x nm$host_exeext; then
1215         gcc_cv_nm=./nm$host_exeext
1216 elif test x$host = x$target; then
1217         # Native build.
1218         gcc_cv_nm=nm$host_exeext
1219 fi
1220 AC_MSG_RESULT($gcc_cv_nm)
1221
1222 # Figure out what assembler alignment features are present.
1223 AC_MSG_CHECKING(assembler alignment features)
1224 gcc_cv_as_alignment_features=none
1225 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1226         # Gas version 2.6 and later support for .balign and .p2align.
1227         # bytes to skip when using .p2align.
1228         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 6 -o "$gcc_cv_gas_major_version" -gt 2; then
1229                 gcc_cv_as_alignment_features=".balign and .p2align"
1230                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1231         fi
1232         # Gas version 2.8 and later support specifying the maximum
1233         # bytes to skip when using .p2align.
1234         if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 8 -o "$gcc_cv_gas_major_version" -gt 2; then
1235                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1236                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1237         fi
1238 elif test x$gcc_cv_as != x; then
1239         # Check if we have .balign and .p2align
1240         echo ".balign  4" > conftest.s
1241         echo ".p2align  2" >> conftest.s
1242         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1243                 gcc_cv_as_alignment_features=".balign and .p2align"
1244                 AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN)
1245         fi
1246         rm -f conftest.s conftest.o
1247         # Check if specifying the maximum bytes to skip when
1248         # using .p2align is supported.
1249         echo ".p2align 4,,7" > conftest.s
1250         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1251                 gcc_cv_as_alignment_features=".p2align including maximum skip"
1252                 AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN)
1253         fi
1254         rm -f conftest.s conftest.o
1255 fi
1256 AC_MSG_RESULT($gcc_cv_as_alignment_features)
1257
1258 AC_MSG_CHECKING(assembler subsection support)
1259 gcc_cv_as_subsections=no
1260 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1261   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1262     gcc_cv_as_subsections="working .subsection -1"
1263   fi
1264 elif test x$gcc_cv_as != x; then
1265         # Check if we have .subsection
1266         echo ".subsection 1" > conftest.s
1267         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1268                 gcc_cv_as_subsections=".subsection"
1269                 if test x$gcc_cv_nm != x; then
1270                         cat > conftest.s <<EOF
1271 conftest_label1: .word 0
1272 .subsection -1
1273 conftest_label2: .word 0
1274 .previous
1275 EOF
1276                         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1277                                 $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1
1278                                 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2
1279                                 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1; then
1280                                         :
1281                                 else
1282                                         gcc_cv_as_subsections="working .subsection -1"
1283                                 fi
1284                         fi
1285                 fi
1286         fi
1287         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1288 fi
1289 if test x"$gcc_cv_as_subsections" = x"working .subsection -1"; then
1290         AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1,
1291 [Define if your assembler supports .subsection and .subsection -1 starts
1292    emitting at the beginning of your section.])
1293 fi
1294 AC_MSG_RESULT($gcc_cv_as_subsections)
1295
1296 AC_MSG_CHECKING(assembler weak support)
1297 gcc_cv_as_weak=no
1298 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1299   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 2 -o "$gcc_cv_gas_major_version" -gt 2; then
1300     gcc_cv_as_weak="yes"
1301   fi
1302 elif test x$gcc_cv_as != x; then
1303         # Check if we have .weak
1304         echo "  .weak foobar" > conftest.s
1305         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1306                 gcc_cv_as_weak="yes"
1307         fi
1308         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1309 fi
1310 if test x"$gcc_cv_as_weak" = xyes; then
1311         AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])
1312 fi
1313 AC_MSG_RESULT($gcc_cv_as_weak)
1314
1315 AC_MSG_CHECKING(assembler hidden support)
1316 gcc_cv_as_hidden=no
1317 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1318   if test "$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
1319     gcc_cv_as_hidden="yes"
1320   fi
1321 elif test x$gcc_cv_as != x; then
1322         # Check if we have .hidden
1323         echo "  .hidden foobar" > conftest.s
1324         echo "foobar:" >> conftest.s
1325         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1326                 gcc_cv_as_hidden="yes"
1327         fi
1328         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1329 fi
1330 if test x"$gcc_cv_as_hidden" = xyes; then
1331         AC_DEFINE(HAVE_GAS_HIDDEN, 1,
1332                 [Define if your assembler supports .hidden.])
1333 fi
1334 AC_MSG_RESULT($gcc_cv_as_hidden)
1335
1336 AC_MSG_CHECKING(assembler leb128 support)
1337 gcc_cv_as_leb128=no
1338 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1339   if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 11 -o "$gcc_cv_gas_major_version" -gt 2 && grep 'obj_format = elf' ../gas/Makefile > /dev/null; then
1340     gcc_cv_as_leb128="yes"
1341   fi
1342 elif test x$gcc_cv_as != x; then
1343         # Check if we have .[us]leb128, and support symbol arithmetic with it.
1344         cat > conftest.s <<EOF
1345         .data
1346         .uleb128 L2 - L1
1347 L1:
1348         .uleb128 1280
1349         .sleb128 -1010
1350 L2:
1351 EOF
1352         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1353                 gcc_cv_as_leb128="yes"
1354
1355                 # GAS versions before 2.11 do not support uleb128,
1356                 # despite appearing to.
1357                 # ??? There exists an elf-specific test that will crash
1358                 # the assembler.  Perhaps it's better to figure out whether
1359                 # arbitrary sections are supported and try the test.
1360                 as_ver=`$gcc_cv_as --version 2>/dev/null | head -1`
1361                 if echo "$as_ver" | grep GNU > /dev/null; then
1362                         as_ver=`echo $as_ver | sed -e 's/.* //'`
1363                         as_major=`echo $as_ver | sed 's/\..*//'`
1364 changequote(,)dnl
1365                         as_minor=`echo $as_ver | sed 's/[^.]*\.\([0-9]*\).*/\1/'`
1366 changequote([,])dnl
1367                         if test $as_major -eq 2 -a $as_minor -lt 11; then
1368                                 gcc_cv_as_leb128="no"
1369                         fi
1370                 fi
1371         fi
1372         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1373 fi
1374 if test x"$gcc_cv_as_leb128" = xyes; then
1375         AC_DEFINE(HAVE_AS_LEB128, 1,
1376                 [Define if your assembler supports .uleb128.])
1377 fi
1378 AC_MSG_RESULT($gcc_cv_as_leb128)
1379
1380 case "$target" in
1381   sparc*-*-*)
1382     AC_CACHE_CHECK([assembler .register pseudo-op support],
1383         gcc_cv_as_register_pseudo_op, [
1384         gcc_cv_as_register_pseudo_op=unknown
1385         if test x$gcc_cv_as != x; then
1386             # Check if we have .register
1387             echo ".register %g2, #scratch" > conftest.s
1388             if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1389                 gcc_cv_as_register_pseudo_op=yes
1390             else
1391                 gcc_cv_as_register_pseudo_op=no
1392             fi
1393             rm -f conftest.s conftest.o
1394         fi
1395     ])
1396     if test "x$gcc_cv_as_register_pseudo_op" = xyes; then
1397         AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1,
1398                 [Define if your assembler supports .register.])
1399     fi
1400
1401     AC_CACHE_CHECK([assembler supports -relax],
1402         gcc_cv_as_relax_opt, [
1403         gcc_cv_as_relax_opt=unknown
1404         if test x$gcc_cv_as != x; then
1405             # Check if gas supports -relax
1406             echo ".text" > conftest.s
1407             if $gcc_cv_as -relax -o conftest.o conftest.s > /dev/null 2>&1; then
1408                 gcc_cv_as_relax_opt=yes
1409             else
1410                 gcc_cv_as_relax_opt=no
1411             fi
1412             rm -f conftest.s conftest.o
1413         fi
1414     ])
1415     if test "x$gcc_cv_as_relax_opt" = xyes; then
1416         AC_DEFINE(HAVE_AS_RELAX_OPTION, 1,
1417                 [Define if your assembler supports -relax option.])
1418     fi
1419
1420     case "$tm_file" in
1421     *64*)
1422         AC_CACHE_CHECK([for 64 bit support in assembler ($gcc_cv_as)],
1423             gcc_cv_as_flags64, [
1424                 if test -n "$gcc_cv_as"; then
1425                     echo ".xword foo" > conftest.s
1426                     gcc_cv_as_flags64=no
1427                     for flag in "-xarch=v9" "-64 -Av9"; do
1428                         if $gcc_cv_as $flag -o conftest.o conftest.s \
1429                             > /dev/null 2>&1; then
1430                             gcc_cv_as_flags64=$flag
1431                             break
1432                         fi
1433                     done
1434                     rm -f conftest.s conftest.o
1435                 else
1436                     if test "$gas" = yes; then
1437                         gcc_cv_as_flags64="-64 -Av9"
1438                     else
1439                         gcc_cv_as_flags64="-xarch=v9"
1440                     fi
1441                 fi
1442         ])
1443         if test "x$gcc_cv_as_flags64" = xno; then
1444 changequote(, )
1445             tmake_file=`echo " $tmake_file " | sed -e 's, sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1446             dep_tmake_file=`echo " $dep_tmake_file " | sed -e 's, [^ ]*/config/sparc/t-sol2-64 , ,' -e 's,^ ,,' -e 's, $,,'`
1447 changequote([, ])
1448         else
1449             AC_DEFINE_UNQUOTED(AS_SPARC64_FLAG, "$gcc_cv_as_flags64",
1450                         [Define if the assembler supports 64bit sparc.])
1451         fi
1452         ;;
1453     *) gcc_cv_as_flags64=${gcc_cv_as_flags64-no}
1454         ;;
1455     esac
1456
1457     if test "x$gcc_cv_as_flags64" != xno; then
1458         AC_CACHE_CHECK([for assembler offsetable %lo() support],
1459             gcc_cv_as_offsetable_lo10, [
1460             gcc_cv_as_offsetable_lo10=unknown
1461             if test "x$gcc_cv_as" != x; then
1462                 # Check if assembler has offsetable %lo()
1463                 echo "or %g1, %lo(ab) + 12, %g1" > conftest.s
1464                 echo "or %g1, %lo(ab + 12), %g1" > conftest1.s
1465                 if $gcc_cv_as $gcc_cv_as_flags64 -o conftest.o conftest.s \
1466                         > /dev/null 2>&1 &&
1467                    $gcc_cv_as $gcc_cv_as_flags64 -o conftest1.o conftest1.s \
1468                         > /dev/null 2>&1; then
1469                     if cmp conftest.o conftest1.o > /dev/null 2>&1; then
1470                         gcc_cv_as_offsetable_lo10=no
1471                     else
1472                         gcc_cv_as_offsetable_lo10=yes
1473                     fi
1474                 else
1475                     gcc_cv_as_offsetable_lo10=no
1476                 fi
1477                 rm -f conftest.s conftest.o conftest1.s conftest1.o
1478             fi
1479         ])
1480         if test "x$gcc_cv_as_offsetable_lo10" = xyes; then
1481             AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1,
1482                 [Define if your assembler supports offsetable %lo().])
1483         fi
1484     fi
1485     ;;
1486
1487 changequote(,)dnl
1488   i[34567]86-*-*)
1489 changequote([,])dnl
1490     AC_MSG_CHECKING(assembler instructions)
1491     gcc_cv_as_instructions=
1492     if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x; then
1493       if test "$gcc_cv_gas_major_version" -eq 2 -a "$gcc_cv_gas_minor_version" -ge 9 -o "$gcc_cv_gas_major_version" -gt 2; then
1494         gcc_cv_as_instructions="filds fists"
1495       fi
1496     elif test x$gcc_cv_as != x; then
1497         set "filds fists" "filds mem; fists mem"
1498         while test $# -gt 0
1499         do
1500                 echo "$2" > conftest.s
1501                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
1502                         gcc_cv_as_instructions=${gcc_cv_as_instructions}$1" "
1503                 fi
1504                 shift 2
1505         done
1506         rm -f conftest.s conftest.o
1507     fi
1508     if test x"$gcc_cv_as_instructions" != x; then
1509         AC_DEFINE_UNQUOTED(HAVE_GAS_`echo "$gcc_cv_as_instructions" | sed -e 's/ $//' | tr '[a-z ]' '[A-Z_]'`)
1510     fi
1511     AC_MSG_RESULT($gcc_cv_as_instructions)
1512     ;;
1513 esac
1514
1515 AC_MSG_CHECKING(assembler dwarf2 debug_line support)
1516 gcc_cv_as_dwarf2_debug_line=no
1517 # ??? Not all targets support dwarf2 debug_line, even within a version
1518 # of gas.  Moreover, we need to emit a valid instruction to trigger any
1519 # info to the output file.  So, as supported targets are added to gas 2.11,
1520 # add some instruction here to (also) show we expect this might work.
1521 # ??? Once 2.11 is released, probably need to add first known working
1522 # version to the per-target configury.
1523 case "$target" in
1524   i?86*-*-* | mips*-*-* | alpha*-*-* | powerpc*-*-* | sparc*-*-*)
1525     insn="nop"
1526     ;;
1527   ia64*-*-*)
1528     insn="nop 0"
1529     ;;
1530   esac
1531 if test x$gcc_cv_gas_major_version != x -a x$gcc_cv_gas_minor_version != x;
1532 then
1533   if test "$gcc_cv_gas_major_version" -eq 2 \
1534         -a "$gcc_cv_gas_minor_version" -ge 11 \
1535         -o "$gcc_cv_gas_major_version" -gt 2 \
1536      && grep 'obj_format = elf' ../gas/Makefile > /dev/null \
1537      && test x"$insn" != x ; then
1538     gcc_cv_as_dwarf2_debug_line="yes"
1539   fi
1540 elif test x$gcc_cv_as != x -a x"$insn" != x ; then
1541         echo '  .file 1 "conftest.s"' > conftest.s
1542         echo '  .loc 1 3 0' >> conftest.s
1543         echo "  $insn" >> conftest.s
1544         # ??? This fails with non-gnu grep.
1545         if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1 \
1546            && grep debug_line conftest.o > /dev/null 2>&1 ; then
1547                 # The .debug_line file table must be in the exact order that
1548                 # we specified the files, since these indicies are also used
1549                 # by DW_AT_decl_file.  Approximate this test by testing if
1550                 # the assembler bitches if the same index is assigned twice.
1551                 echo '  .file 1 "foo.s"' > conftest.s
1552                 echo '  .file 1 "bar.s"' >> conftest.s
1553                 if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1
1554                 then
1555                   gcc_cv_as_dwarf2_debug_line="no"
1556                 else
1557                   gcc_cv_as_dwarf2_debug_line="yes"
1558                 fi
1559         fi
1560         rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
1561 fi
1562 if test x"$gcc_cv_as_dwarf2_debug_line" = xyes; then
1563         AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1,
1564 [Define if your assembler supports dwarf2 .file/.loc directives,
1565    and preserves file table indicies exactly as given.])
1566 fi
1567 AC_MSG_RESULT($gcc_cv_as_dwarf2_debug_line)
1568
1569 # Figure out what language subdirectories are present.
1570 # Look if the user specified --enable-languages="..."; if not, use
1571 # the environment variable $LANGUAGES if defined. $LANGUAGES might
1572 # go away some day.
1573 if test x"${enable_languages+set}" != xset; then
1574         if test x"${LANGUAGES+set}" = xset; then
1575                 enable_languages="`echo ${LANGUAGES} | tr ' ' ','`"
1576         else
1577                 enable_languages=all
1578         fi
1579 else
1580         if test x"${enable_languages}" = x; then
1581                 AC_MSG_ERROR([--enable-languages needs at least one argument])
1582         fi
1583 fi
1584
1585 # First scan to see if an enabled language requires some other language.
1586 # We assume that a given config-lang.in will list all the language
1587 # front ends it requires, even if some are required indirectly.
1588 for lang in ${srcdir}/*/config-lang.in ..
1589 do
1590    case $lang in
1591     ..)
1592        ;;
1593     # The odd quoting in the next line works around
1594     # an apparent bug in bash 1.12 on linux.
1595 changequote(,)dnl
1596     ${srcdir}/[*]/config-lang.in)
1597        ;;
1598     *)
1599        lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^      ]*\).*$,\1,p' $lang`
1600        this_lang_requires=`sed -n -e 's,^lang_requires=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^lang_requires=\([^    ]*\).*$,\1,p' $lang`
1601        for other in $this_lang_requires
1602        do
1603           case ,${enable_languages}, in
1604            *,$other,*)
1605               ;;
1606            *,all,*)
1607               ;;
1608            *,$lang_alias,*)
1609               enable_languages="$enable_languages,$other"
1610               ;;
1611           esac
1612        done
1613        ;;
1614 changequote([,])dnl
1615    esac
1616 done
1617
1618 subdirs=
1619 for lang in ${srcdir}/*/config-lang.in ..
1620 do
1621         case $lang in
1622         ..) ;;
1623         # The odd quoting in the next line works around
1624         # an apparent bug in bash 1.12 on linux.
1625 changequote(,)dnl
1626         ${srcdir}/[*]/config-lang.in) ;;
1627         *)
1628           lang_alias=`sed -n -e 's,^language=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^language=\([^   ]*\).*$,\1,p' $lang`
1629           this_lang_libs=`sed -n -e 's,^target_libs=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^target_libs=\([^         ]*\).*$,\1,p' $lang`
1630           build_by_default=`sed -n -e 's,^build_by_default=['"'"'"'"]\(.*\)["'"'"'"'].*$,\1,p' -e 's,^build_by_default=\([^     ]*\).*$,\1,p' $lang`
1631           if test "x$lang_alias" = x
1632           then
1633                 echo "$lang doesn't set \$language." 1>&2
1634                 exit 1
1635           fi
1636           case ${build_by_default},${enable_languages}, in
1637           *,$lang_alias,*) add_this_lang=yes ;;
1638           no,*) add_this_lang=no ;;
1639           *,all,*) add_this_lang=yes ;;
1640           *) add_this_lang=no ;;
1641           esac
1642           if test x"${add_this_lang}" = xyes; then
1643                 case $lang in
1644                     ${srcdir}/ada/config-lang.in)
1645                         if test x$have_gnat = xyes ; then
1646                                 subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1647                         fi
1648                         ;;
1649                     *)
1650                         subdirs="$subdirs `echo $lang | sed -e 's,^.*/\([^/]*\)/config-lang.in$,\1,'`"
1651                         ;;
1652                 esac
1653           fi
1654           ;;
1655 changequote([,])dnl
1656         esac
1657 done
1658
1659 # Make gthr-default.h if we have a thread file.
1660 gthread_flags=
1661 if test $thread_file != single; then
1662     rm -f gthr-default.h
1663     echo "#include \"gthr-${thread_file}.h\"" > gthr-default.h
1664     gthread_flags=-DHAVE_GTHR_DEFAULT
1665 fi
1666 AC_SUBST(gthread_flags)
1667
1668 # Find out what GC implementation we want, or may, use.
1669 AC_ARG_WITH(gc,
1670 [  --with-gc={simple,page} Choose the garbage collection mechanism to use
1671                            with the compiler.],
1672 [case "$withval" in
1673   simple | page)
1674     GGC=ggc-$withval
1675     ;;
1676   *)
1677     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
1678     ;;
1679 esac],
1680 [GGC=ggc-page])
1681 AC_SUBST(GGC)
1682 echo "Using $GGC for garbage collection."
1683
1684 # Use the system's zlib library.
1685 zlibdir=-L../zlib
1686 zlibinc="-I\$(srcdir)/../zlib"
1687 AC_ARG_WITH(system-zlib,
1688 [  --with-system-zlib      use installed libz],
1689 zlibdir=
1690 zlibinc=
1691 )
1692 AC_SUBST(zlibdir)
1693 AC_SUBST(zlibinc)
1694
1695 AC_DEFINE_UNQUOTED(ENABLE_STD_NAMESPACE, 1,
1696   [Define to 1 if you want to enable namespaces (-fhonor-std) by default.])
1697
1698 dnl Very limited version of automake's enable-maintainer-mode
1699
1700 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
1701   dnl maintainer-mode is disabled by default
1702   AC_ARG_ENABLE(maintainer-mode,
1703 [  --enable-maintainer-mode enable make rules and dependencies not useful
1704                           (and sometimes confusing) to the casual installer],
1705       maintainer_mode=$enableval,
1706       maintainer_mode=no)
1707
1708 AC_MSG_RESULT($maintainer_mode)
1709
1710 if test "$maintainer_mode" = "yes"; then
1711   MAINT=''
1712 else
1713   MAINT='#'
1714 fi
1715 AC_SUBST(MAINT)dnl
1716
1717 # With Setjmp/Longjmp based exception handling.
1718 AC_ARG_ENABLE(sjlj-exceptions,
1719 [  --enable-sjlj-exceptions arrange to use setjmp/longjmp exception handling.],
1720 [sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi`
1721 AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj,
1722   [Define 0/1 to force the choice for exception handling model.])])
1723
1724 # Make empty files to contain the specs and options for each language.
1725 # Then add #include lines to for a compiler that has specs and/or options.
1726
1727 lang_specs_files=
1728 lang_options_files=
1729 lang_tree_files=
1730 rm -f specs.h options.h gencheck.h
1731 touch specs.h options.h gencheck.h
1732 for subdir in . $subdirs
1733 do
1734         if test -f $srcdir/$subdir/lang-specs.h; then
1735                 echo "#include \"$subdir/lang-specs.h\"" >>specs.h
1736                 lang_specs_files="$lang_specs_files $srcdir/$subdir/lang-specs.h"
1737         fi
1738         if test -f $srcdir/$subdir/lang-options.h; then
1739                 echo "#include \"$subdir/lang-options.h\"" >>options.h
1740                 lang_options_files="$lang_options_files $srcdir/$subdir/lang-options.h"
1741         fi
1742         if test -f $srcdir/$subdir/$subdir-tree.def; then
1743                 echo "#include \"$subdir/$subdir-tree.def\"" >>gencheck.h
1744                 lang_tree_files="$lang_tree_files $srcdir/$subdir/$subdir-tree.def"
1745         fi
1746 done
1747
1748 # These (without "all_") are set in each config-lang.in.
1749 # `language' must be a single word so is spelled singularly.
1750 all_languages=
1751 all_boot_languages=
1752 all_compilers=
1753 all_stagestuff=
1754 all_diff_excludes=
1755 all_outputs='Makefile intl/Makefile po/Makefile.in fixinc/Makefile gccbug mklibgcc'
1756 # List of language makefile fragments.
1757 all_lang_makefiles=
1758 all_headers=
1759 all_lib2funcs=
1760
1761 # Add the language fragments.
1762 # Languages are added via two mechanisms.  Some information must be
1763 # recorded in makefile variables, these are defined in config-lang.in.
1764 # We accumulate them and plug them into the main Makefile.
1765 # The other mechanism is a set of hooks for each of the main targets
1766 # like `clean', `install', etc.
1767
1768 language_fragments="Make-lang"
1769 language_hooks="Make-hooks"
1770
1771 for s in .. $subdirs
1772 do
1773         if test $s != ".."
1774         then
1775                 language=
1776                 boot_language=
1777                 compilers=
1778                 stagestuff=
1779                 diff_excludes=
1780                 headers=
1781                 outputs=
1782                 lib2funcs=
1783                 . ${srcdir}/$s/config-lang.in
1784                 if test "x$language" = x
1785                 then
1786                         echo "${srcdir}/$s/config-lang.in doesn't set \$language." 1>&2
1787                         exit 1
1788                 fi
1789                 all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Make-lang.in"
1790                 if test -f ${srcdir}/$s/Makefile.in
1791                 then all_lang_makefiles="$all_lang_makefiles ${srcdir}/$s/Makefile.in"
1792                 fi
1793                 all_languages="$all_languages $language"
1794                 if test "x$boot_language" = xyes
1795                 then
1796                         all_boot_languages="$all_boot_languages $language"
1797                 fi
1798                 all_compilers="$all_compilers $compilers"
1799                 all_stagestuff="$all_stagestuff $stagestuff"
1800                 all_diff_excludes="$all_diff_excludes $diff_excludes"
1801                 all_headers="$all_headers $headers"
1802                 all_outputs="$all_outputs $outputs"
1803                 all_lib2funcs="$all_lib2funcs $lib2funcs"
1804         fi
1805 done
1806
1807 check_languages=
1808 for language in .. $all_languages
1809 do
1810         if test $language != ".."
1811         then
1812                 check_languages="$check_languages check-$language"
1813         fi
1814 done
1815
1816 # Since we can't use `::' targets, we link each language in
1817 # with a set of hooks, reached indirectly via lang.${target}.
1818
1819 rm -f Make-hooks
1820 touch Make-hooks
1821 target_list="all.build all.cross start.encap rest.encap \
1822         info dvi \
1823         install-normal install-common install-info install-man \
1824         uninstall \
1825         mostlyclean clean distclean extraclean maintainer-clean \
1826         stage1 stage2 stage3 stage4"
1827 for t in $target_list
1828 do
1829         x=
1830         for lang in .. $all_languages
1831         do
1832                 if test $lang != ".."; then
1833                         x="$x $lang.$t"
1834                 fi
1835         done
1836         echo "lang.$t: $x" >> Make-hooks
1837 done
1838
1839 # Create .gdbinit.
1840
1841 echo "dir ." > .gdbinit
1842 echo "dir ${srcdir}" >> .gdbinit
1843 if test x$gdb_needs_out_file_path = xyes
1844 then
1845         echo "dir ${srcdir}/config/"`dirname ${out_file}` >> .gdbinit
1846 fi
1847 if test "x$subdirs" != x; then
1848         for s in $subdirs
1849         do
1850                 echo "dir ${srcdir}/$s" >> .gdbinit
1851         done
1852 fi
1853 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
1854
1855 # Define variables host_canonical and build_canonical
1856 # because some Cygnus local changes in the Makefile depend on them.
1857 build_canonical=${build}
1858 host_canonical=${host}
1859 target_subdir=
1860 if test "${host}" != "${target}" ; then
1861     target_subdir=${target_alias}/
1862 fi
1863 AC_SUBST(build_canonical)
1864 AC_SUBST(host_canonical)
1865 AC_SUBST(target_subdir)
1866
1867 # If $(exec_prefix) exists and is not the same as $(prefix), then compute an
1868 # absolute path for gcc_tooldir based on inserting the number of up-directory
1869 # movements required to get from $(exec_prefix) to $(prefix) into the basic
1870 # $(libsubdir)/@(unlibsubdir) based path.
1871 # Don't set gcc_tooldir to tooldir since that's only passed in by the toplevel
1872 # make and thus we'd get different behavior depending on where we built the
1873 # sources.
1874 if test x$exec_prefix = xNONE -o x$exec_prefix = x$prefix; then
1875     gcc_tooldir='$(libsubdir)/$(unlibsubdir)/../$(target_alias)'
1876 else
1877 changequote(<<, >>)dnl
1878 # An explanation of the sed strings:
1879 #  -e 's|^\$(prefix)||'   matches and eliminates 'prefix' from 'exec_prefix'
1880 #  -e 's|/$||'            match a trailing forward slash and eliminates it
1881 #  -e 's|^[^/]|/|'        forces the string to start with a forward slash (*)
1882 #  -e 's|/[^/]*|../|g'    replaces each occurance of /<directory> with ../
1883 #
1884 # (*) Note this pattern overwrites the first character of the string
1885 # with a forward slash if one is not already present.  This is not a
1886 # problem because the exact names of the sub-directories concerned is
1887 # unimportant, just the number of them matters.
1888 #
1889 # The practical upshot of these patterns is like this:
1890 #
1891 #  prefix     exec_prefix        result
1892 #  ------     -----------        ------
1893 #   /foo        /foo/bar          ../
1894 #   /foo/       /foo/bar          ../
1895 #   /foo        /foo/bar/         ../
1896 #   /foo/       /foo/bar/         ../
1897 #   /foo        /foo/bar/ugg      ../../
1898 #
1899     dollar='$$'
1900     gcc_tooldir="\$(libsubdir)/\$(unlibsubdir)/\`echo \$(exec_prefix) | sed -e 's|^\$(prefix)||' -e 's|/\$(dollar)||' -e 's|^[^/]|/|' -e 's|/[^/]*|../|g'\`\$(target_alias)"
1901 changequote([, ])dnl
1902 fi
1903 AC_SUBST(gcc_tooldir)
1904 AC_SUBST(dollar)
1905
1906 # Find a directory in which to install a shared libgcc.
1907
1908 AC_ARG_ENABLE(version-specific-runtime-libs,
1909 [  --enable-version-specific-runtime-libs    Specify that runtime libraries shou
1910 ld be installed in a compiler-specific directory ])
1911
1912 AC_ARG_WITH(slibdir,
1913 [  --with-slibdir=DIR      shared libraries in DIR [LIBDIR]],
1914 slibdir="$with_slibdir",
1915 if test "${enable_version_specific_runtime_libs+set}" = set; then
1916   slibdir='$(libsubdir)'
1917 elif test "$host" != "$target"; then
1918   slibdir='$(build_tooldir)/lib'
1919 else
1920   slibdir='$(libdir)'
1921 fi)
1922 AC_SUBST(slibdir)
1923
1924 # Nothing to do for FLOAT_H, float_format already handled.
1925 objdir=`pwd`
1926 AC_SUBST(objdir)
1927
1928 # Process the language and host/target makefile fragments.
1929 ${CONFIG_SHELL-/bin/sh} $srcdir/configure.frag $srcdir "$subdirs" "$dep_host_xmake_file" "$dep_tmake_file"
1930
1931 # Substitute configuration variables
1932 AC_SUBST(subdirs)
1933 AC_SUBST(all_boot_languages)
1934 AC_SUBST(all_compilers)
1935 AC_SUBST(all_diff_excludes)
1936 AC_SUBST(all_headers)
1937 AC_SUBST(all_lang_makefiles)
1938 AC_SUBST(all_languages)
1939 AC_SUBST(all_lib2funcs)
1940 AC_SUBST(all_stagestuff)
1941 AC_SUBST(build_exeext)
1942 AC_SUBST(build_install_headers_dir)
1943 AC_SUBST(build_xm_file_list)
1944 AC_SUBST(build_xm_file)
1945 AC_SUBST(build_xm_defines)
1946 AC_SUBST(check_languages)
1947 AC_SUBST(cc_set_by_configure)
1948 AC_SUBST(quoted_cc_set_by_configure)
1949 AC_SUBST(cpp_install_dir)
1950 AC_SUBST(dep_host_xmake_file)
1951 AC_SUBST(dep_tmake_file)
1952 AC_SUBST(extra_c_flags)
1953 AC_SUBST(extra_headers_list)
1954 AC_SUBST(extra_objs)
1955 AC_SUBST(extra_parts)
1956 AC_SUBST(extra_passes)
1957 AC_SUBST(extra_programs)
1958 AC_SUBST(float_h_file)
1959 AC_SUBST(gcc_config_arguments)
1960 AC_SUBST(gcc_gxx_include_dir)
1961 AC_SUBST(libstdcxx_incdir)
1962 AC_SUBST(gcc_version)
1963 AC_SUBST(gcc_version_full)
1964 AC_SUBST(gcc_version_trigger)
1965 AC_SUBST(host_exeext)
1966 AC_SUBST(host_extra_gcc_objs)
1967 AC_SUBST(host_xm_file_list)
1968 AC_SUBST(host_xm_file)
1969 AC_SUBST(host_xm_defines)
1970 AC_SUBST(install)
1971 AC_SUBST(lang_options_files)
1972 AC_SUBST(lang_specs_files)
1973 AC_SUBST(lang_tree_files)
1974 AC_SUBST(local_prefix)
1975 AC_SUBST(maybe_use_collect2)
1976 AC_SUBST(md_file)
1977 AC_SUBST(objc_boehm_gc)
1978 AC_SUBST(out_file)
1979 AC_SUBST(out_object_file)
1980 AC_SUBST(stage_prefix_set_by_configure)
1981 AC_SUBST(symbolic_link)
1982 AC_SUBST(thread_file)
1983 AC_SUBST(tm_file_list)
1984 AC_SUBST(tm_file)
1985 AC_SUBST(tm_p_file_list)
1986 AC_SUBST(tm_p_file)
1987 AC_SUBST(xm_file)
1988 AC_SUBST(xm_defines)
1989 AC_SUBST(will_use_collect2)
1990 AC_SUBST(c_target_objs)
1991 AC_SUBST(cxx_target_objs)
1992 AC_SUBST(target_cpu_default)
1993
1994 AC_SUBST_FILE(target_overrides)
1995 AC_SUBST_FILE(host_overrides)
1996 AC_SUBST(cross_defines)
1997 AC_SUBST_FILE(cross_overrides)
1998 AC_SUBST_FILE(build_overrides)
1999 AC_SUBST_FILE(language_fragments)
2000 AC_SUBST_FILE(language_hooks)
2001
2002 # Echo that links are built
2003 if test x$host = x$target
2004 then
2005         str1="native "
2006 else
2007         str1="cross-"
2008         str2=" from $host"
2009 fi
2010
2011 if test x$host != x$build
2012 then
2013         str3=" on a $build system"
2014 fi
2015
2016 if test "x$str2" != x || test "x$str3" != x
2017 then
2018         str4=
2019 fi
2020
2021 echo "Links are now set up to build a ${str1}compiler for ${target}$str4" 1>&2
2022
2023 if test "x$str2" != x || test "x$str3" != x
2024 then
2025         echo " ${str2}${str3}." 1>&2
2026 fi
2027
2028 # Truncate the target if necessary
2029 if test x$host_truncate_target != x; then
2030         target=`echo $target | sed -e 's/\(..............\).*/\1/'`
2031 fi
2032
2033 # Configure the subdirectories
2034 # AC_CONFIG_SUBDIRS($subdirs)
2035
2036 # Create the Makefile
2037 # and configure language subdirectories
2038 AC_OUTPUT($all_outputs,
2039 [
2040 case x$CONFIG_HEADERS in
2041 xauto-host.h:config.in)
2042 echo > cstamp-h ;;
2043 esac
2044 # If the host supports symlinks, point stage[1234] at ../stage[1234] so
2045 # bootstrapping and the installation procedure can still use
2046 # CC="stage1/xgcc -Bstage1/".  If the host doesn't support symlinks,
2047 # FLAGS_TO_PASS has been modified to solve the problem there.
2048 # This is virtually a duplicate of what happens in configure.lang; we do
2049 # an extra check to make sure this only happens if ln -s can be used.
2050 if test "$symbolic_link" = "ln -s"; then
2051  for d in .. ${subdirs} ; do
2052    if test $d != ..; then
2053         STARTDIR=`pwd`
2054         cd $d
2055         for t in stage1 stage2 stage3 stage4 include
2056         do
2057                 rm -f $t
2058                 $symbolic_link ../$t $t 2>/dev/null
2059         done
2060         cd $STARTDIR
2061    fi
2062  done
2063 else true ; fi
2064 # Avoid having to add intl to our include paths.
2065 if test -f intl/libintl.h; then
2066   echo creating libintl.h
2067   echo '#include "intl/libintl.h"' >libintl.h
2068 fi
2069 ],
2070 [
2071 host='${host}'
2072 build='${build}'
2073 target='${target}'
2074 target_alias='${target_alias}'
2075 srcdir='${srcdir}'
2076 subdirs='${subdirs}'
2077 symbolic_link='${symbolic_link}'
2078 program_transform_set='${program_transform_set}'
2079 program_transform_name='${program_transform_name}'
2080 dep_host_xmake_file='${dep_host_xmake_file}'
2081 host_xmake_file='${host_xmake_file}'
2082 dep_tmake_file='${dep_tmake_file}'
2083 tmake_file='${tmake_file}'
2084 thread_file='${thread_file}'
2085 gcc_config_arguments='${gcc_config_arguments}'
2086 gcc_version='${gcc_version}'
2087 gcc_version_full='${gcc_version_full}'
2088 gcc_version_trigger='${gcc_version_trigger}'
2089 local_prefix='${local_prefix}'
2090 build_install_headers_dir='${build_install_headers_dir}'
2091 build_exeext='${build_exeext}'
2092 host_exeext='${host_exeext}'
2093 out_file='${out_file}'
2094 gdb_needs_out_file_path='${gdb_needs_out_file_path}'
2095 SET_MAKE='${SET_MAKE}'
2096 target_list='${target_list}'
2097 target_overrides='${target_overrides}'
2098 host_overrides='${host_overrides}'
2099 cross_defines='${cross_defines}'
2100 cross_overrides='${cross_overrides}'
2101 build_overrides='${build_overrides}'
2102 cpp_install_dir='${cpp_install_dir}'
2103 ])