1 Dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.11)dnl dnl Minimum Autoconf version required.
4 AC_INIT(include/features.h)
5 AC_CONFIG_HEADER(config.h)
7 # This will get text that should go into config.make.
10 # Check for a --with-gmp argument and set gmp-srcdir in config.make.
12 --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
15 yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
17 *) config_vars="$config_vars
18 gmp-srcdir = $withval" ;;
21 # Check for a --with-gettext argument and set gettext-srcdir in config.make.
22 AC_ARG_WITH(gettext, dnl
23 --with-gettext=DIR find GNU gettext source code in DIR (not needed),
25 case "$with_gettext" in
27 AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;;
30 config_vars="$config_vars
31 gettext-srcdir = $withval" ;;
35 dnl Arguments to specify presence of other packages/features.
37 [ --with-fp if using floating-point hardware [default=yes]],
38 with_fp=$withval, with_fp=yes)
39 AC_ARG_WITH(binutils, dnl
40 --with-binutils=PATH specify location of binutils (as and ld),
41 path_binutils=$withval, path_binutils='')
43 --with-elf if using the ELF object format,
46 AC_ARG_ENABLE(libio, dnl
47 [ --enable-libio build in GNU libio instead of GNU stdio],
48 [if test $enableval = yes; then
55 AC_ARG_ENABLE(sanity-checks, dnl
56 [ --disable-sanity-checks really do not use threads (should not be used
57 except in special situations) [default=yes]],
58 enable_sanity=$enableval, enable_sanity=yes)
60 dnl Arguments to enable or disable building the static, shared, profiled,
61 dnl and -fomit-frame-pointer libraries.
62 AC_ARG_ENABLE(static, dnl
63 [ --enable-static build static library [default=yes]],
64 static=$enableval, static=yes)
65 AC_ARG_ENABLE(shared, dnl
66 [ --enable-shared build shared library [default=yes if GNU ld & ELF]],
67 shared=$enableval, shared=default)
68 AC_ARG_ENABLE(profile, dnl
69 [ --enable-profile build profiled library [default=yes]],
70 profile=$enableval, profile=yes)
71 AC_ARG_ENABLE(omitfp, dnl
72 [ --enable-omitfp build undebuggable optimized library [default=no]],
73 omitfp=$enableval, omitfp=no)
74 AC_ARG_ENABLE(bounded, dnl
75 [ --enable-bounded build with runtime bounds checking [default=no]],
76 bounded=$enableval, bounded=no)
77 AC_ARG_ENABLE(versioning, dnl
78 [ --disable-versioning do not include versioning information in the
79 library objects [default=yes if supported]],
80 enable_versioning=$enableval, enable_versioning=yes)
82 dnl Generic infrastructure for drop-in additions to libc.
83 AC_ARG_ENABLE(add-ons, dnl
84 [ --enable-add-ons=DIR... configure and build named extra directories],
85 [add_ons=`echo "$enableval" | sed 's/,/ /g'`],
87 AC_CONFIG_SUBDIRS($add_ons)
89 if test x"$add_ons" != x; then
91 # Test whether such a subdir really exists.
92 if test -d $srcdir/$f; then
93 add_ons_pfx="$add_ons_pfx $f/"
95 AC_MSG_ERROR(add-on directory \"$f\" does not exist)
100 dnl On some platforms we cannot use dynamic loading. We must provide
101 dnl static NSS modules.
102 AC_ARG_ENABLE(static-nss, dnl
103 [ --enable-static-nss build static NSS modules [default=no]],
104 static_nss=$enableval, static_nss=no)
105 if test x"$static_nss" = xyes; then
106 AC_DEFINE(DO_STATIC_NSS)
111 # The way shlib-versions is used to generate soversions.mk uses a
112 # fairly simplistic model for name recognition that can't distinguish
113 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
114 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
115 # tell. This doesn't get used much beyond that, so it's fairly safe.
120 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
125 ### I put this here to prevent those annoying emails from people who cannot
126 ### read and try to compile glibc on unsupported platforms. --drepper
128 ### By using the undocumented --enable-hacker-mode option for configure
129 ### one can skip this test to make the configuration not fail for unsupported
132 if test -z "$enable_hacker_mode"; then
137 echo "*** The GNU C library is currently not available for this platform."
138 echo "*** So far nobody cared to port it and if there is no volunteer it"
139 echo "*** might never happen. So, if you have interest to see glibc on"
140 echo "*** this platform visit"
141 echo "*** http://www.gnu.ai.mit.edu/software/libc/porting.html"
142 echo "*** and join the group of porters"
148 # We keep the original values in `$config_*' and never modify them, so we
149 # can write them unchanged into config.make. Everything else uses
150 # $machine, $vendor, and $os, and changes them whenever convenient.
151 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
153 # Some configurations imply other options.
155 gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
156 # These systems always use GNU tools.
157 gnu_ld=yes gnu_as=yes ;;
160 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
161 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
163 gnu* | linux* | sysv4* | solaris2*)
164 # These systems (almost) always use the ELF format.
169 machine=$config_machine
170 vendor=$config_vendor
173 dnl We need to use [ and ] for other purposes for a while now.
175 # Expand the configuration machine name into a subdirectory by architecture
176 # type and particular chip.
178 a29k | am29000) base_machine=a29k machine=a29k ;;
179 alpha*) base_machine=alpha machine=alpha/$machine ;;
180 arm*) base_machine=arm machine=arm/$machine ;;
181 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
182 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
183 hppa*) base_machine=hppa machine=hppa/$machine ;;
184 i[3456]86) base_machine=i386 machine=i386/$machine ;;
185 m680?0) base_machine=m68k machine=m68k/$machine ;;
186 m68k) base_machine=m68k machine=m68k/m68020 ;;
187 m88???) base_machine=m88k machine=m88k/$machine ;;
188 m88k) base_machine=m88k machine=m88k/m88100 ;;
189 mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
190 mips*) base_machine=mips machine=mips/$machine ;;
192 base_machine=sparc machine=sparc/sparc32 ;;
193 sparcv8 | supersparc | hypersparc)
194 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
195 sparc64 | ultrasparc)
196 base_machine=sparc machine=sparc/sparc64 ;;
199 AC_SUBST(base_machine)
201 if test "$base_machine" = "i386"; then
202 AC_DEFINE(USE_REGPARMS)
205 # Compute the list of sysdep directories for this configuration.
206 # This can take a while to compute.
207 sysdep_dir=$srcdir/sysdeps
208 AC_MSG_CHECKING(sysdep dirs)
209 dnl We need to use [ and ] for other purposes for a while now.
211 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
212 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
217 netbsd* | 386bsd* | freebsd* | bsdi*)
218 base_os=unix/bsd/bsd4.4 ;;
219 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
221 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
224 base_os=unix/sysv/sysv4 ;;
226 base_os=standalone ;;
231 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
234 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
238 o=`echo $tail | sed 's/[0-9]*$//'`
239 if test $o != $tail; then
242 # For linux-gnu, try linux-gnu, then linux.
243 o=`echo $tail | sed 's/-.*$//'`
244 if test $o != $tail; then
248 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
251 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
257 # For sparc/sparc9, try sparc/sparc9 and then sparc.
260 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
262 # Prepend the machine's FPU directory unless --without-fp.
263 if test "$with_fp" = yes; then
270 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
273 # Find what sysdep directories exist.
275 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
276 for d in $add_ons_pfx ''; do
277 for b in $base ''; do
278 for m0 in $mach ''; do
279 for v in /$vendor ''; do
280 for o in /$ostry ''; do
281 for m in $mach ''; do
282 if test "$m0$b$v$o$m"; then
283 try="${d}sysdeps$m0$b$v$o$m"
284 test -n "$enable_debug_configure" &&
285 echo "$0 [DEBUG]: try $try" >&2
288 *) dest=$srcdir/$try ;;
290 if test -d $dest; then
291 sysnames="$sysnames $try"
292 { test -n "$o" || test -n "$b"; } && os_used=t
293 { test -n "$m" || test -n "$m0"; } && machine_used=t
304 if test -z "$os_used" && test "$os" != none; then
305 AC_MSG_ERROR(Operating system $os is not supported.)
307 if test -z "$machine_used" && test "$machine" != none; then
308 AC_MSG_ERROR(The $machine is not supported.)
311 # We have now validated the configuration.
314 # If using ELF, look for an `elf' subdirectory of each machine directory.
315 # We prepend these rather than inserting them whereever the machine appears
316 # because things specified by the machine's ELF ABI should override
317 # OS-specific things, and should always be the same for any OS on the
318 # machine (otherwise what's the point of an ABI?).
319 if test "$elf" = yes; then
321 for d in $add_ons_pfx ''; do
324 *) xsrcdir=$srcdir/ ;;
327 if test -d $xsrcdir${d}sysdeps$m/elf; then
328 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
332 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
336 # Expand the list of system names into a full list of directories
337 # from each element's parent name and Implies file (if present).
340 while test $# -gt 0; do
344 case " $names " in *" $name "*)
345 # Already in the list.
349 # Report each name as we discover it, so there is no long pause in output.
350 echo $ac_n "$name $ac_c" >&AC_FD_MSG
352 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
356 *) xsrcdir=$srcdir/ ;;
358 test -n "$enable_debug_configure" &&
359 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
361 if test -f $xsrcdir$name/Implies; then
362 # Collect more names from the `Implies' file (removing comments).
363 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
365 for x in $implied_candidate; do
366 if test -d $xsrcdir$name_base/$x; then
367 implied="$implied $name_base/$x";
369 AC_MSG_WARN($name/Implies specifies nonexistent $x)
376 # Add NAME to the list of names.
379 # Find the parent of NAME, using the empty string if it has none.
381 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
384 # Add the names implied by NAME, and NAME's parent (if it has one), to
385 # the list of names to be processed (the argument list). We prepend the
386 # implied names to the list and append the parent. We want implied
387 # directories to come before further directories inferred from the
388 # configuration components; this ensures that for sysv4, unix/common
389 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
391 sysnames="`echo $implied $* $parent`"
392 test -n "$sysnames" && set $sysnames
395 # Add the default directories.
396 sysnames="$names sysdeps/generic"
398 # The other names were emitted during the scan.
399 AC_MSG_RESULT(sysdeps/generic)
405 if test "$INSTALL" = "${srcdir}/install-sh -c"; then
406 # The makefiles need to use a different form to find it in $srcdir.
407 INSTALL='\$(..)./install-sh -c'
410 AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :)
414 if test $host != $build; then
415 AC_CHECK_PROGS(BUILD_CC, gcc cc)
417 AC_SUBST(cross_compiling)
420 AC_CHECK_TOOL(AR, ar)
421 AC_CHECK_TOOL(RANLIB, ranlib, :)
423 AC_PATH_PROG(BASH, bash, no)
424 if test "$BASH" != no &&
425 $BASH -c 'test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
426 libc_cv_have_bash2=yes
428 libc_cv_have_bash2=no
430 AC_SUBST(libc_cv_have_bash2)
432 dnl We need a ksh compatible shell for tzselect.
433 if test "$BASH" = no; then
434 AC_PATH_PROG(KSH, ksh, no)
435 if test "$KSH" = no; then
445 AC_SUBST(libc_cv_have_ksh)
447 AC_PATH_PROGS(PERL, perl, no)
450 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
451 echo '#include <stddef.h>
452 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
453 if eval "$ac_cpp conftest.c 2>/dev/null" \
454 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
455 libc_cv_signed_size_t=no
457 libc_cv_signed_size_t=yes
460 if test $libc_cv_signed_size_t = yes; then
461 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
462 cat >> confdefs.h <<\EOF
464 #define __SIZE_TYPE__ unsigned
468 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
470 [#define __need_size_t
471 #define __need_wchar_t
474 #include <stddef.h>], [size_t size; wchar_t wchar;
476 #error stddef.h ignored __need_*
478 if (&size == NULL || &wchar == NULL) abort ();],
479 libc_cv_friendly_stddef=yes,
480 libc_cv_friendly_stddef=no)])
481 if test $libc_cv_friendly_stddef = yes; then
482 config_vars="$config_vars
483 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
486 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
487 libc_cv_need_minus_P, [dnl
488 cat > conftest.S <<EOF
489 #include "confdefs.h"
490 /* Nothing whatsoever. */
492 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
493 libc_cv_need_minus_P=no
495 libc_cv_need_minus_P=yes
498 if test $libc_cv_need_minus_P = yes; then
499 config_vars="$config_vars
500 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
503 # gcc 2.7.x has a bug where if -pipe is set, the assembler will always
504 # be told to read stdin. This causes the compiler to hang when fed an
506 if test $ac_cv_prog_gcc = yes; then
507 case `${CC-cc} -v 2>&1` in
509 # We must check this even if -pipe is not given here, because the user
510 # might do `make CFLAGS=-pipe'.
511 AC_CACHE_CHECK(for gcc 2.7.x -pipe bug, libc_cv_gcc_pipe_bug, [dnl
512 cp /dev/null conftest.s
513 cat >conftest1.s <<EOF
516 if ${CC-cc} -pipe -c conftest.s <conftest1.s 2>/dev/null; then
517 libc_cv_gcc_pipe_bug=no
519 libc_cv_gcc_pipe_bug=yes
522 if test $libc_cv_gcc_pipe_bug = yes; then
523 makeCC="${CC-cc} -B\$(common-objpfx)"
525 CFLAGS=`echo $CFLAGS |sed 's/-pipe//'`
527 *) libc_cv_gcc_pipe_bug=no;;
530 libc_cv_gcc_pipe_bug=no
533 AC_CACHE_CHECK(for assembler global-symbol directive,
534 libc_cv_asm_global_directive, [dnl
535 libc_cv_asm_global_directive=UNKNOWN
536 for ac_globl in .globl .global; do
537 cat > conftest.s <<EOF
542 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
543 libc_cv_asm_global_directive=${ac_globl}
546 test $libc_cv_asm_global_directive != UNKNOWN && break
548 if test $libc_cv_asm_global_directive = UNKNOWN; then
549 AC_MSG_ERROR(cannot determine asm global directive)
551 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
554 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
555 cat > conftest.s <<EOF
558 .set glibc_conftest_frobozz,foo
559 $libc_cv_asm_global_directive glibc_conftest_frobozz
561 # The alpha-dec-osf1 assembler gives only a warning for `.set'
562 # (but it doesn't work), so we must do a linking check to be sure.
563 cat > conftest1.c <<\EOF
564 extern int glibc_conftest_frobozz;
565 main () { printf ("%d\n", glibc_conftest_frobozz); }
567 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
568 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
569 libc_cv_asm_set_directive=yes
571 libc_cv_asm_set_directive=no
574 if test $libc_cv_asm_set_directive = yes; then
575 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
578 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
579 [cat > conftest.s <<EOF
582 .symver _sym,sym@VERS
584 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
585 libc_cv_asm_symver_directive=yes
587 libc_cv_asm_symver_directive=no
590 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
591 if test $libc_cv_asm_symver_directive = yes; then
592 cat > conftest.s <<EOF
595 .symver _sym,sym@VERS
597 cat > conftest.map <<EOF
602 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
603 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
604 -nostartfiles -nostdlib
605 -Wl,--version-script,conftest.map
608 libc_cv_ld_version_script_option=yes
610 libc_cv_ld_version_script_option=no
613 libc_cv_ld_version_script_option=no
616 libc_cv_ld_version_script_option=no
619 if test $libc_cv_asm_symver_directive = yes &&
620 test $libc_cv_ld_version_script_option = yes &&
621 test $enable_versioning = yes; then
623 AC_DEFINE(DO_VERSIONING)
629 if test $elf = yes; then
630 AC_CACHE_CHECK(for .previous assembler directive,
631 libc_cv_asm_previous_directive, [dnl
632 cat > conftest.s <<EOF
636 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
637 libc_cv_asm_previous_directive=yes
639 libc_cv_asm_previous_directive=no
642 if test $libc_cv_asm_previous_directive = yes; then
643 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
645 AC_CACHE_CHECK(for .popsection assembler directive,
646 libc_cv_asm_popsection_directive, [dnl
647 cat > conftest.s <<EOF
648 .pushsection foo_section
651 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
652 libc_cv_asm_popsection_directive=yes
654 libc_cv_asm_popsection_directive=no
657 if test $libc_cv_asm_popsection_directive = yes; then
658 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
663 if test $elf != yes; then
664 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
665 [AC_TRY_COMPILE(, [asm (".section .init");
666 asm (".section .fini");
668 libc_cv_have_initfini=yes,
669 libc_cv_have_initfini=no)])
670 AC_SUBST(libc_cv_have_initfini)dnl
671 if test $libc_cv_have_initfini = yes; then
672 AC_DEFINE(HAVE_INITFINI)
676 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
677 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
678 [cat > conftest.$ac_ext <<EOF
679 dnl This sometimes fails to find confdefs.h, for some reason.
680 dnl [#]line __oline__ "[$]0"
681 [#]line __oline__ "configure"
682 #include "confdefs.h"
683 void underscore_test(void) {
686 if AC_TRY_EVAL(ac_compile); then
687 if grep _underscore_test conftest* >/dev/null; then
688 ifelse([$1], , :, [rm -f conftest*
691 ifelse([$2], , , [rm -f conftest*
695 echo "configure: failed program was:" >&AC_FD_CC
696 cat conftest.$ac_ext >&AC_FD_CC
697 ifelse([$2], , , [rm -f conftest*
702 if test $elf = yes; then
703 libc_cv_asm_underscores=no
705 if test $ac_cv_prog_cc_works = yes; then
706 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
707 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
708 libc_cv_asm_underscores=yes,
709 libc_cv_asm_underscores=no)])
711 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
712 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
713 libc_cv_asm_underscores=no)])
716 if test $libc_cv_asm_underscores = no; then
717 AC_DEFINE(NO_UNDERSCORES)
720 if test $elf = yes; then
721 libc_cv_weak_symbols=yes
722 libc_cv_asm_weak_directive=yes
723 libc_cv_asm_weakext_directive=no
725 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
727 cat > conftest.s <<EOF
729 ${libc_cv_asm_global_directive} foo
734 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
735 libc_cv_asm_weak_directive=yes
737 libc_cv_asm_weak_directive=no
741 if test $libc_cv_asm_weak_directive = no; then
742 AC_CACHE_CHECK(for assembler .weakext directive,
743 libc_cv_asm_weakext_directive,
745 cat > conftest.s <<EOF
747 ${libc_cv_asm_global_directive} foo
752 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
753 libc_cv_asm_weakext_directive=yes
755 libc_cv_asm_weakext_directive=no
762 if test $libc_cv_asm_weak_directive = yes; then
763 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
764 elif test $libc_cv_asm_weakext_directive = yes; then
765 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
768 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
769 cat > conftest.c <<\EOF
774 dnl No \ in command here because it ends up inside ''.
775 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
776 -nostdlib -nostartfiles -Wl,--no-whole-archive
777 -o conftest conftest.c 1>&AC_FD_CC]); then
778 libc_cv_ld_no_whole_archive=yes
780 libc_cv_ld_no_whole_archive=no
783 AC_SUBST(libc_cv_ld_no_whole_archive)dnl
785 AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl
786 cat > conftest.c <<\EOF
791 dnl No \ in command here because it ends up inside ''.
792 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
793 -nostdlib -nostartfiles -fno-exceptions
794 -o conftest conftest.c 1>&AC_FD_CC]); then
795 libc_cv_gcc_no_exceptions=yes
797 libc_cv_gcc_no_exceptions=no
800 AC_SUBST(libc_cv_gcc_no_exceptions)dnl
802 AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
803 [cat > conftest.c <<EOF
804 #line __oline__ "configure"
805 static char __EH_FRAME_BEGIN__[];
808 __register_frame (__EH_FRAME_BEGIN__);
809 __deregister_frame (__EH_FRAME_BEGIN__);
813 /* FIXME: this is fragile. */
823 dnl No \ in command here because it ends up inside ''.
824 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
825 -nostdlib -nostartfiles
826 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
827 libc_cv_gcc_dwarf2_unwind_info=yes
829 libc_cv_gcc_dwarf2_unwind_info=no
832 if test $libc_cv_gcc_dwarf2_unwind_info = yes; then
833 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
836 ### End of automated tests.
837 ### Now run sysdeps configure fragments.
839 # sysdeps configure fragments may set these with files to be linked below.
843 # Iterate over all the sysdep directories we will use, running their
844 # configure fragments, and looking for a uname implementation.
846 for dir in $sysnames; do
849 *) dest=$srcdir/$dir ;;
851 if test -r $dest/configure; then
852 AC_MSG_RESULT(running configure fragment for $dest)
856 if test -z "$uname"; then
857 if test -r $dest/uname.c ||
858 test -r $dest/uname.S ||
859 { test -r $dest/syscalls.list &&
860 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
867 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
869 # If we will use the generic uname implementation, we must figure out what
870 # it will say by examining the system, and write the results in config-name.h.
871 if test "$uname" = "sysdeps/generic"; then
874 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
876 if test $uname_sysname != $config_os; then
877 config_release=`echo $config_os | sed s/$uname_sysname//`
880 AC_DEFUN(LIBC_KERNEL_ID, [dnl
881 if test -r /vmunix; then
882 kernel_id=`strings /vmunix | grep UNIX`
883 elif test -r /dynix; then
884 kernel_id=`strings /dynix | grep DYNIX`
890 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
891 AC_REQUIRE([LIBC_KERNEL_ID])dnl
893 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
895 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
896 != x$config_release; then
897 # The configuration release is a substring of the kernel release.
898 libc_cv_uname_release=$kernel_release
899 elif test x$config_release != x; then
900 libc_cv_uname_release=$config_release
901 elif test x$kernel_release != x; then
902 libc_cv_uname_release=$kernel_release
904 libc_cv_uname_release=unknown
906 uname_release="$libc_cv_uname_release"
908 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
909 AC_REQUIRE([LIBC_KERNEL_ID])dnl
911 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
913 if test -n "$kernel_version"; then
914 libc_cv_uname_version="$kernel_version"
916 libc_cv_uname_version=unknown
918 uname_version="$libc_cv_uname_version"
920 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
921 config_uname=config-name.h:config-name.in
923 # For non-generic uname, we don't need to create config-name.h at all.
927 AC_MSG_CHECKING(stdio selection)
930 libio) AC_DEFINE(USE_IN_LIBIO) ;;
931 default) stdio=stdio ;;
933 AC_MSG_RESULT($stdio)
935 AC_MSG_CHECKING(ldap selection)
946 AC_SUBST(libc_cv_slibdir)
947 AC_SUBST(libc_cv_sysconfdir)
948 AC_SUBST(libc_cv_rootsbindir)
950 AC_SUBST(has_ldconfig)
952 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
953 if test $gnu_ld = yes; then
954 AC_DEFINE(HAVE_GNU_LD)
956 if test $gnu_as = yes; then
957 AC_DEFINE(HAVE_GNU_AS)
959 if test $elf = yes; then
965 if test $shared = default; then
966 if test $gnu_ld = yes; then
969 # For now we do not assume shared libs are available. In future more
970 # tests might become available.
975 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
977 cat > conftest.c <<EOF
978 #if defined(__PIC__) || defined(__pic__) || defined(PIC) || defined(pic)
979 # error PIC is default.
982 if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
986 AC_SUBST(pic_default)
992 AC_SUBST(nopic_initfini)
996 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
999 config_makefile=Makefile
1002 VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h`
1005 if test $libc_cv_gcc_pipe_bug = yes; then
1010 AC_OUTPUT_COMMANDS([
1011 if test "$realCC"; then
1012 sed -e 's/%{pipe:-}/%|/g' `$realCC -print-file-name=specs` >specsT
1014 fi], [realCC=$realCC])
1016 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, ,
1017 [echo '$config_vars' >> config.make; test -d bits || mkdir bits])