1 dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.13)dnl dnl Minimum Autoconf version required.
4 AC_INIT(include/features.h)
5 AC_CONFIG_HEADER(config.h)
6 AC_CONFIG_AUX_DIR(scripts)
8 # This will get text that should go into config.make.
11 # Check for a --with-gmp argument and set gmp-srcdir in config.make.
13 --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
16 yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
18 *) config_vars="$config_vars
19 gmp-srcdir = $withval" ;;
22 # Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
24 --with-gd=DIR find libgd include dir and library with prefix DIR,
28 *) libgd_include="-I$withval/include"
29 libgd_ldflags="-L$withval/lib" ;;
32 AC_ARG_WITH(gd-include, dnl
33 --with-gd-include=DIR find libgd include files in DIR,
35 case "$with_gd_include" in
37 *) libgd_include="-I$withval" ;;
40 AC_ARG_WITH(gd-lib, dnl
41 --with-gd-lib=DIR find libgd library files in DIR,
43 case "$with_gd_lib" in
45 *) libgd_ldflags="-L$withval" ;;
49 if test -n "$libgd_include"; then
50 config_vars="$config_vars
51 CFLAGS-memusagestat.c = $libgd_include"
53 if test -n "$libgd_ldflags"; then
54 config_vars="$config_vars
55 libgd-LDFLAGS = $libgd_ldflags"
58 dnl Arguments to specify presence of other packages/features.
60 [ --with-fp if using floating-point hardware [default=yes]],
61 with_fp=$withval, with_fp=yes)
62 AC_ARG_WITH(binutils, dnl
63 --with-binutils=PATH specify location of binutils (as and ld),
64 path_binutils=$withval, path_binutils='')
66 --with-elf if using the ELF object format,
69 [ --without-cvs if CVS should not be used],
70 with_cvs=$withval, with_cvs=yes)
71 if test "$with_cvs" = yes; then
72 if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
79 AC_ARG_WITH(headers, dnl
80 [ --with-headers=PATH location of system headers to use
81 [e.g. /usr/src/linux/include]
82 [default=compiler default]],
83 sysheaders=$withval, sysheaders='')
85 AC_ARG_ENABLE(libio, dnl
86 [ --enable-libio build in GNU libio instead of GNU stdio],
87 [if test $enableval = yes; then
94 AC_ARG_ENABLE(sanity-checks, dnl
95 [ --disable-sanity-checks really do not use threads (should not be used
96 except in special situations) [default=yes]],
97 enable_sanity=$enableval, enable_sanity=yes)
99 dnl Arguments to enable or disable building the static, shared, profiled,
100 dnl and -fomit-frame-pointer libraries.
101 dnl I've disabled this for now since we cannot build glibc without static
102 dnl libraries built in the moment.
103 dnl AC_ARG_ENABLE(static, dnl
104 dnl [ --enable-static build static library [default=yes]],
105 dnl static=$enableval, static=yes)
107 AC_ARG_ENABLE(shared, dnl
108 [ --enable-shared build shared library [default=yes if GNU ld & ELF]],
109 shared=$enableval, shared=default)
110 AC_ARG_ENABLE(profile, dnl
111 [ --enable-profile build profiled library [default=yes]],
112 profile=$enableval, profile=yes)
113 AC_ARG_ENABLE(omitfp, dnl
114 [ --enable-omitfp build undebuggable optimized library [default=no]],
115 omitfp=$enableval, omitfp=no)
116 AC_ARG_ENABLE(bounded, dnl
117 [ --enable-bounded build with runtime bounds checking [default=no]],
118 bounded=$enableval, bounded=no)
119 AC_ARG_ENABLE(versioning, dnl
120 [ --disable-versioning do not include versioning information in the
121 library objects [default=yes if supported]],
122 enable_versioning=$enableval, enable_versioning=yes)
124 AC_ARG_ENABLE(oldest-abi, dnl
125 [ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2]
126 [default=glibc default]],
127 oldest_abi=$enableval, oldest_abi=no)
128 if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
131 AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
135 dnl Generic infrastructure for drop-in additions to libc.
136 AC_ARG_ENABLE(add-ons, dnl
137 [ --enable-add-ons[=DIR1,DIR2]...
138 configure and build add-ons in DIR1,DIR2,...
139 search for add-ons if no parameter given],
140 [case "$enableval" in
141 yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'`
142 test "$add_ons" = "*" && add_ons= ;;
143 *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;;
147 AC_CONFIG_SUBDIRS($add_ons)
149 if test x"$add_ons" != x; then
150 for f in $add_ons; do
151 # Test whether such a subdir really exists.
152 if test -d $srcdir/$f; then
153 add_ons_pfx="$add_ons_pfx $f/"
155 AC_MSG_ERROR(add-on directory \"$f\" does not exist)
160 dnl On some platforms we cannot use dynamic loading. We must provide
161 dnl static NSS modules.
162 AC_ARG_ENABLE(static-nss, dnl
163 [ --enable-static-nss build static NSS modules [default=no]],
164 static_nss=$enableval, static_nss=no)
165 if test x"$static_nss" = xyes; then
166 AC_DEFINE(DO_STATIC_NSS)
169 AC_ARG_ENABLE(force-install,
170 [ --disable-force-install don't force installation of files from this package,
171 even if they are older than the installed files],
172 force_install=$enableval, force_install=yes)
173 AC_SUBST(force_install)
175 dnl On some platforms we allow dropping compatibility with all kernel
177 AC_ARG_ENABLE(kernel,
178 [ --enable-kernel=VERSION compile for compatibility with kernel not older
180 minimum_kernel=$enableval)
181 dnl Prevent unreasonable values.
182 if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
183 # Better nothing than this.
186 if test "$minimum_kernel" = current; then
187 minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
191 dnl For the development we sometimes want gcc to issue even more warnings.
192 dnl This is not the default since many of the extra warnings are not
194 AC_ARG_ENABLE(all-warnings,
195 [ --enable-all-warnings enable all useful warnings gcc can issue],
196 all_warnings=$enableval)
197 AC_SUBST(all_warnings)
201 # The way shlib-versions is used to generate soversions.mk uses a
202 # fairly simplistic model for name recognition that can't distinguish
203 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
204 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
205 # tell. This doesn't get used much beyond that, so it's fairly safe.
210 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
214 # We keep the original values in `$config_*' and never modify them, so we
215 # can write them unchanged into config.make. Everything else uses
216 # $machine, $vendor, and $os, and changes them whenever convenient.
217 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
219 # Don't allow vendor == "unknown"
220 test "$config_vendor" = unknown && config_vendor=
221 config_os="`echo $config_os | sed 's/^unknown-//'`"
223 # Some configurations imply other options.
225 gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
226 # These systems always use GNU tools.
227 gnu_ld=yes gnu_as=yes ;;
230 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
231 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
233 gnu* | linux* | sysv4* | solaris2* | irix6*)
234 # These systems (almost) always use the ELF format.
239 machine=$config_machine
240 vendor=$config_vendor
243 # config.guess on some IBM machines says `rs6000' instead of `powerpc'.
245 if test "$machine" = rs6000; then
250 ### I put this here to prevent those annoying emails from people who cannot
251 ### read and try to compile glibc on unsupported platforms. --drepper
253 ### By using the undocumented --enable-hacker-mode option for configure
254 ### one can skip this test to make the configuration not fail for unsupported
257 if test -z "$enable_hacker_mode"; then
258 case "$machine-$host_os" in
259 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
262 echo "*** The GNU C library is currently not available for this platform."
263 echo "*** So far nobody cared to port it and if there is no volunteer it"
264 echo "*** might never happen. So, if you have interest to see glibc on"
265 echo "*** this platform visit"
266 echo "*** http://www.gnu.org/software/libc/porting.html"
267 echo "*** and join the group of porters"
273 dnl We need to use [ and ] for other purposes for a while now.
275 # Expand the configuration machine name into a subdirectory by architecture
276 # type and particular chip.
278 a29k | am29000) base_machine=a29k machine=a29k ;;
279 alpha*) base_machine=alpha machine=alpha/$machine ;;
280 arm*) base_machine=arm machine=arm/$machine ;;
281 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
282 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
283 hppa*64*) base_machine=hppa machine=hppa/hppa64 ;;
284 hppa*) base_machine=hppa machine=hppa/hppa1.1 ;;
285 i[3456]86) base_machine=i386 machine=i386/$machine ;;
286 ia64) base_machine=ia64 machine=ia64 ;;
287 m680?0) base_machine=m68k machine=m68k/$machine ;;
288 m68k) base_machine=m68k machine=m68k/m68020 ;;
289 m88???) base_machine=m88k machine=m88k/$machine ;;
290 m88k) base_machine=m88k machine=m88k/m88100 ;;
291 mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
292 mips*) base_machine=mips
294 IP22) machine=mips/mips3 ;;
295 *) machine=mips/$machine ;;
297 sh3*) base_machine=sh machine=sh/sh3 ;;
298 sh4*) base_machine=sh machine=sh/sh4 ;;
300 base_machine=sparc machine=sparc/sparc32 ;;
301 sparcv8 | supersparc | hypersparc)
302 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
303 sparcv8plus | sparcv8plusa | sparcv9)
304 base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
305 sparc64 | ultrasparc)
306 base_machine=sparc machine=sparc/sparc64 ;;
309 AC_SUBST(base_machine)
311 if test "$base_machine" = "i386"; then
312 AC_DEFINE(USE_REGPARMS)
315 # Compute the list of sysdep directories for this configuration.
316 # This can take a while to compute.
317 sysdep_dir=$srcdir/sysdeps
318 AC_MSG_CHECKING(sysdep dirs)
319 dnl We need to use [ and ] for other purposes for a while now.
321 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
322 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
327 netbsd* | 386bsd* | freebsd* | bsdi*)
328 base_os=unix/bsd/bsd4.4 ;;
329 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
331 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
334 base_os=unix/sysv/irix6/$os ;;
336 base_os=unix/sysv/sysv4 ;;
338 base_os=unix/sysv/hpux/$os ;;
340 base_os=unix/sysv/aix/aix4.3 ;;
342 base_os=standalone ;;
347 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
350 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
354 o=`echo $tail | sed 's/[0-9]*$//'`
355 if test $o != $tail; then
358 # For linux-gnu, try linux-gnu, then linux.
359 o=`echo $tail | sed 's/-.*$//'`
360 if test $o != $tail; then
364 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
367 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
373 # For sparc/sparc32, try sparc/sparc32 and then sparc.
376 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
378 # Prepend the machine's FPU directory unless --without-fp.
379 if test "$with_fp" = yes; then
386 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
389 # Find what sysdep directories exist.
391 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
392 for d in $add_ons_pfx ''; do
393 for b in $base ''; do
394 for m0 in $mach ''; do
395 for v in /$vendor ''; do
396 test "$v" = / && continue
397 for o in /$ostry ''; do
398 test "$o" = / && continue
399 for m in $mach ''; do
400 if test "$m0$b$v$o$m"; then
401 try="${d}sysdeps$m0$b$v$o$m"
402 test -n "$enable_debug_configure" &&
403 echo "$0 [DEBUG]: try $try" >&2
404 if test -d $srcdir/$try; then
405 sysnames="$sysnames $try"
406 { test -n "$o" || test -n "$b"; } && os_used=t
407 { test -n "$m" || test -n "$m0"; } && machine_used=t
418 if test -z "$os_used" && test "$os" != none; then
419 AC_MSG_ERROR(Operating system $os is not supported.)
421 if test -z "$machine_used" && test "$machine" != none; then
422 AC_MSG_ERROR(The $machine is not supported.)
425 # We have now validated the configuration.
428 # If using ELF, look for an `elf' subdirectory of each machine directory.
429 # We prepend these rather than inserting them whereever the machine appears
430 # because things specified by the machine's ELF ABI should override
431 # OS-specific things, and should always be the same for any OS on the
432 # machine (otherwise what's the point of an ABI?).
433 if test "$elf" = yes; then
435 for d in $add_ons_pfx ''; do
437 if test -d $srcdir/${d}sysdeps$m/elf; then
438 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
442 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
446 # Expand the list of system names into a full list of directories
447 # from each element's parent name and Implies file (if present).
450 while test $# -gt 0; do
454 case " $names " in *" $name "*)
455 # Already in the list.
459 # Report each name as we discover it, so there is no long pause in output.
460 echo $ac_n "$name $ac_c" >&AC_FD_MSG
462 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
466 *) xsrcdir=$srcdir/ ;;
468 test -n "$enable_debug_configure" &&
469 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
471 if test -f $xsrcdir$name/Implies; then
472 # Collect more names from the `Implies' file (removing comments).
473 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
475 for x in $implied_candidate; do
476 if test -d $xsrcdir$name_base/$x; then
477 implied="$implied $name_base/$x";
479 AC_MSG_WARN($name/Implies specifies nonexistent $x)
486 # Add NAME to the list of names.
489 # Find the parent of NAME, using the empty string if it has none.
491 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
494 # Add the names implied by NAME, and NAME's parent (if it has one), to
495 # the list of names to be processed (the argument list). We prepend the
496 # implied names to the list and append the parent. We want implied
497 # directories to come before further directories inferred from the
498 # configuration components; this ensures that for sysv4, unix/common
499 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
501 sysnames="`echo $implied $* $parent`"
502 test -n "$sysnames" && set $sysnames
505 # Add the default directories.
506 default_sysnames=sysdeps/generic
507 if test "$elf" = yes; then
508 default_sysnames="sysdeps/generic/elf $default_sysnames"
510 sysnames="$names $default_sysnames"
512 # The other names were emitted during the scan.
513 AC_MSG_RESULT($default_sysnames)
519 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
520 # The makefiles need to use a different form to find it in $srcdir.
521 INSTALL='\$(..)./scripts/install-sh -c'
525 # We need the physical current working directory. We cannot use the
526 # "pwd -P" shell builtin since that's not portable. Instead we try to
527 # find a pwd binary. Note that assigning to the PWD environment
528 # variable might have some interesting side effects, so we don't do
530 AC_PATH_PROG(PWD_P, pwd, no)
531 if test "$PWD_P" = no; then
532 AC_MSG_ERROR(*** A pwd binary could not be found.)
535 # These programs are version sensitive.
536 AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
537 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
538 [version \([egcygnustpi-]*[0-9.]*\)],
539 [*gcc-2.9[5-9].*|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|cygnus-2.9[1-9]*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]|sgicc-*],
541 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
542 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
543 [3.79* | 3.[89]*], critic_missing=t)
545 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
546 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
547 [0.[1-9][0-9].* | [1-9].*], MSGFMT=: aux_missing=t)
548 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
549 [GNU texinfo.* \([0-9][0-9.]*\)],
550 [3.1[1-9] | 3.[2-9][0-9] | 4.* | 1.6[89] | 1.7[0-9]], MAKEINFO=: aux_missing=t)
551 AC_CHECK_PROG_VER(SED, gsed sed, --version,
552 [GNU sed version \([0-9]*\.[0-9.]*\)],
553 [3.0[2-9]*|3.[1-9]*|[4-9]*], SED=: aux_missing=t)
555 if test -n "$critic_missing"; then
557 *** Some critical program is missing or too old.
558 *** Check the INSTALL file for required versions.])
561 test -n "$aux_missing" && AC_MSG_WARN([
562 *** An auxiliary program is missing or too old;
563 *** some features will be disabled.
564 *** Check the INSTALL file for required versions.])
566 # glibcbug.in wants to know the compiler version.
567 CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'`
572 if test $host != $build; then
573 AC_CHECK_PROGS(BUILD_CC, gcc cc)
575 AC_SUBST(cross_compiling)
578 AC_CHECK_TOOL(MIG, mig)
580 # if using special system headers, find out the compiler's sekrit
581 # header directory and add that to the list. NOTE: Only does the right
582 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
583 if test -n "$sysheaders"; then
584 ccheaders=`$CC -print-file-name=include`
585 SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
587 AC_SUBST(SYSINCLUDES)
589 # check if ranlib is necessary
590 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
591 cat > conftest.c <<EOF
596 $CC $CFLAGS -c conftest.c
597 $AR cr conftest.a conftest.c
598 cp conftest.a conftest2.a
600 if cmp -s conftest.a conftest2.a; then
601 libc_cv_ranlib_necessary=no
603 libc_cv_ranlib_necessary=yes
606 if test "$libc_cv_ranlib_necessary" = no; then
610 # Test if LD_LIBRARY_PATH contains the notation for the current directory
611 # since this would lead to problems installing/building glibc.
612 # LD_LIBRARY_PATH contains the current directory if one of the following
614 # - one of the terminals (":" and ";") is the first or last sign
615 # - two terminals occur directly after each other
616 # - the path contains an element with a dot in it
617 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
619 case ${LD_LIBRARY_PATH} in
620 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
621 ld_library_path_setting="contains current directory"
624 ld_library_path_setting="ok"
628 AC_MSG_RESULT($ld_library_path_setting)
629 if test "$ld_library_path_setting" != "ok"; then
631 *** LD_LIBRARY_PATH shouldn't contain the current directory when
632 *** building glibc. Please change the environment variable
633 *** and run configure again.])
636 AC_PATH_PROG(BASH, bash, no)
637 if test "$BASH" != no &&
638 $BASH -c 'test "$BASH_VERSINFO" \
639 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
640 libc_cv_have_bash2=yes
642 libc_cv_have_bash2=no
644 AC_SUBST(libc_cv_have_bash2)
646 dnl We need a ksh compatible shell for tzselect.
647 if test "$BASH" = no; then
648 AC_PATH_PROG(KSH, ksh, no)
649 if test "$KSH" = no; then
659 AC_SUBST(libc_cv_have_ksh)
662 AC_PATH_PROG(PERL, perl, no)
663 if test "$PERL" != no &&
664 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
667 AC_PATH_PROG(INSTALL_INFO, install-info, no,
668 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
669 if test "$INSTALL_INFO" != "no"; then
670 AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info,
672 # There is a hard ^_ on the next line. I am open to better ideas.
674 echo 'File: dir Node: Top This is the top of the INFO tree'
675 echo '* Menu:') >conftest.d/dir
676 (echo 'INFO-DIR-SECTION i-d-s works'
677 echo 'START-INFO-DIR-ENTRY'
678 echo '* Prog: (prog). Program.'
679 echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info
680 if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1
682 if grep -s 'i-d-s works' conftest.d/dir >/dev/null
683 then libc_cv_old_debian_install_info=no
684 else libc_cv_old_debian_install_info=yes
686 else libc_cv_old_debian_install_info=no testfailed=t
689 if test -n "$testfailed"
690 then AC_MSG_WARN([install-info errored out, check config.log])
692 OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info
694 AC_SUBST(OLD_DEBIAN_INSTALL_INFO)
696 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
697 echo '#include <stddef.h>
698 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
699 if eval "$ac_cpp conftest.c 2>/dev/null" \
700 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
701 libc_cv_signed_size_t=no
703 libc_cv_signed_size_t=yes
706 if test $libc_cv_signed_size_t = yes; then
707 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
708 cat >> confdefs.h <<\EOF
710 #define __SIZE_TYPE__ unsigned
714 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
716 [#define __need_size_t
717 #define __need_wchar_t
720 #include <stddef.h>], [size_t size; wchar_t wchar;
722 #error stddef.h ignored __need_*
724 if (&size == NULL || &wchar == NULL) abort ();],
725 libc_cv_friendly_stddef=yes,
726 libc_cv_friendly_stddef=no)])
727 if test $libc_cv_friendly_stddef = yes; then
728 config_vars="$config_vars
729 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
732 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
733 libc_cv_need_minus_P, [dnl
734 cat > conftest.S <<EOF
735 #include "confdefs.h"
736 /* Nothing whatsoever. */
738 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
739 libc_cv_need_minus_P=no
741 libc_cv_need_minus_P=yes
744 if test $libc_cv_need_minus_P = yes; then
745 config_vars="$config_vars
746 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
749 AC_MSG_CHECKING(whether .text pseudo-op must be used)
750 AC_CACHE_VAL(libc_cv_dot_text, [dnl
751 cat > conftest.s <<EOF
755 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
756 libc_cv_dot_text=.text
759 if test -z "$libc_cv_dot_text"; then
765 AC_CACHE_CHECK(for assembler global-symbol directive,
766 libc_cv_asm_global_directive, [dnl
767 libc_cv_asm_global_directive=UNKNOWN
768 for ac_globl in .globl .global .EXPORT; do
769 cat > conftest.s <<EOF
774 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
775 libc_cv_asm_global_directive=${ac_globl}
778 test $libc_cv_asm_global_directive != UNKNOWN && break
780 if test $libc_cv_asm_global_directive = UNKNOWN; then
781 AC_MSG_ERROR(cannot determine asm global directive)
783 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
786 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
787 cat > conftest.s <<EOF
790 .set glibc_conftest_frobozz,foo
791 $libc_cv_asm_global_directive glibc_conftest_frobozz
793 # The alpha-dec-osf1 assembler gives only a warning for `.set'
794 # (but it doesn't work), so we must do a linking check to be sure.
795 cat > conftest1.c <<\EOF
796 extern int glibc_conftest_frobozz;
797 main () { printf ("%d\n", glibc_conftest_frobozz); }
799 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
800 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
801 libc_cv_asm_set_directive=yes
803 libc_cv_asm_set_directive=no
806 if test $libc_cv_asm_set_directive = yes; then
807 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
810 # The Aix ld uses global .symbol_names instead of symbol_names.
813 AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
816 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
817 [cat > conftest.s <<EOF
820 .symver _sym,sym@VERS
822 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
823 libc_cv_asm_symver_directive=yes
825 libc_cv_asm_symver_directive=no
828 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
829 if test $libc_cv_asm_symver_directive = yes; then
830 cat > conftest.s <<EOF
833 .symver _sym,sym@VERS
835 cat > conftest.map <<EOF
844 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
845 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
846 -nostartfiles -nostdlib
847 -Wl,--version-script,conftest.map
850 libc_cv_ld_version_script_option=yes
852 libc_cv_ld_version_script_option=no
855 libc_cv_ld_version_script_option=no
858 libc_cv_ld_version_script_option=no
861 if test $shared != no &&
862 test $libc_cv_asm_symver_directive = yes &&
863 test $libc_cv_ld_version_script_option = yes &&
864 test $enable_versioning = yes; then
866 AC_DEFINE(DO_VERSIONING)
872 if test $shared != no && test $VERSIONING = no; then
874 *** WARNING: You should not compile GNU libc without versioning. Not using
875 *** versioning will introduce incompatibilities so that old binaries
876 *** will not run anymore.
877 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
879 if test $elf = yes; then
880 AC_CACHE_CHECK(for .previous assembler directive,
881 libc_cv_asm_previous_directive, [dnl
882 cat > conftest.s <<EOF
886 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
887 libc_cv_asm_previous_directive=yes
889 libc_cv_asm_previous_directive=no
892 if test $libc_cv_asm_previous_directive = yes; then
893 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
895 AC_CACHE_CHECK(for .popsection assembler directive,
896 libc_cv_asm_popsection_directive, [dnl
897 cat > conftest.s <<EOF
898 .pushsection foo_section
901 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
902 libc_cv_asm_popsection_directive=yes
904 libc_cv_asm_popsection_directive=no
907 if test $libc_cv_asm_popsection_directive = yes; then
908 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
911 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
912 libc_cv_asm_protected_directive, [dnl
913 cat > conftest.s <<EOF
919 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
920 libc_cv_asm_protected_directive=yes
922 libc_cv_asm_protected_directive=no
925 AC_SUBST(libc_cv_asm_protected_directive)
927 AC_CACHE_CHECK(for -z nodelete option,
928 libc_cv_z_nodelete, [dnl
929 cat > conftest.c <<EOF
930 int _start (void) { return 42; }
932 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC])
934 libc_cv_z_nodelete=yes
936 libc_cv_z_nodelete=no
939 AC_SUBST(libc_cv_z_nodelete)
941 AC_CACHE_CHECK(for -z nodlopen option,
942 libc_cv_z_nodlopen, [dnl
943 cat > conftest.c <<EOF
944 int _start (void) { return 42; }
946 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC])
948 libc_cv_z_nodlopen=yes
950 libc_cv_z_nodlopen=no
953 AC_SUBST(libc_cv_z_nodlopen)
956 if test $elf != yes; then
957 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
958 [AC_TRY_COMPILE(, [asm (".section .init");
959 asm (".section .fini");
960 asm ("${libc_cv_dot_text}");],
961 libc_cv_have_initfini=yes,
962 libc_cv_have_initfini=no)])
963 AC_SUBST(libc_cv_have_initfini)dnl
964 if test $libc_cv_have_initfini = yes; then
965 AC_DEFINE(HAVE_INITFINI)
969 if test $elf = yes -a $gnu_ld = yes; then
970 AC_CACHE_CHECK(whether cc puts quotes around section names,
971 libc_cv_have_section_quotes,
972 [cat > conftest.c <<EOF
974 __attribute__ ((section ("bar"))) = 1;
976 if ${CC-cc} -S conftest.c -o conftest.s; then
977 if grep '\.section.*"bar"' conftest.s >/dev/null; then
978 libc_cv_have_section_quotes=yes
980 libc_cv_have_section_quotes=no
983 libc_cv_have_section_quotes=unknown
987 if test $libc_cv_have_section_quotes = yes; then
988 AC_DEFINE(HAVE_SECTION_QUOTES)
992 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
993 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
994 [cat > conftest.$ac_ext <<EOF
995 dnl This sometimes fails to find confdefs.h, for some reason.
996 dnl [#]line __oline__ "[$]0"
997 [#]line __oline__ "configure"
998 #include "confdefs.h"
999 void underscore_test(void) {
1002 if AC_TRY_EVAL(ac_compile); then
1003 if grep _underscore_test conftest* >/dev/null; then
1004 ifelse([$1], , :, [rm -f conftest*
1007 ifelse([$2], , , [rm -f conftest*
1011 echo "configure: failed program was:" >&AC_FD_CC
1012 cat conftest.$ac_ext >&AC_FD_CC
1013 ifelse([$2], , , [rm -f conftest*
1018 if test $elf = yes; then
1019 libc_cv_asm_underscores=no
1021 if test $ac_cv_prog_cc_works = yes; then
1022 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1023 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1024 libc_cv_asm_underscores=yes,
1025 libc_cv_asm_underscores=no)])
1027 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1028 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1029 libc_cv_asm_underscores=no)])
1032 if test $libc_cv_asm_underscores = no; then
1033 AC_DEFINE(NO_UNDERSCORES)
1036 if test $elf = yes; then
1037 libc_cv_weak_symbols=yes
1040 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1042 cat > conftest.s <<EOF
1044 ${libc_cv_asm_global_directive} foo
1047 .weak bar; bar = foo
1049 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1050 libc_cv_asm_weak_directive=yes
1052 libc_cv_asm_weak_directive=no
1056 if test $libc_cv_asm_weak_directive = no; then
1057 AC_CACHE_CHECK(for assembler .weakext directive,
1058 libc_cv_asm_weakext_directive,
1060 cat > conftest.s <<EOF
1062 ${libc_cv_asm_global_directive} foo
1066 ${libc_cv_asm_global_directive} baz
1069 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1070 libc_cv_asm_weakext_directive=yes
1072 libc_cv_asm_weakext_directive=no
1078 if test $libc_cv_asm_weak_directive = yes; then
1079 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1080 elif test $libc_cv_asm_weakext_directive = yes; then
1081 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1084 dnl The standard hppa assembler uses `;' to start comments and `!'
1085 dnl as a line separator.
1086 case "${host_cpu}-${host_os}" in
1088 AC_CACHE_CHECK(for assembler line separator,
1089 libc_cv_asm_line_sep, [dnl
1090 cat > conftest.s <<EOF
1093 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
1094 libc_cv_asm_line_sep='!'
1096 if test -z "$enable_hacker_mode"; then
1097 echo "*** You need a newer assembler to compile glibc"
1101 libc_cv_asm_line_sep=';'
1104 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1108 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1109 cat > conftest.c <<\EOF
1114 dnl No \ in command here because it ends up inside ''.
1115 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1116 -nostdlib -nostartfiles -Wl,--no-whole-archive
1117 -o conftest conftest.c 1>&AC_FD_CC]); then
1118 libc_cv_ld_no_whole_archive=yes
1120 libc_cv_ld_no_whole_archive=no
1123 if test $libc_cv_ld_no_whole_archive = yes; then
1124 no_whole_archive=-Wl,--no-whole-archive
1126 AC_SUBST(no_whole_archive)dnl
1128 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1129 cat > conftest.c <<\EOF
1134 dnl No \ in command here because it ends up inside ''.
1135 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1136 -nostdlib -nostartfiles -fexceptions
1137 -o conftest conftest.c 1>&AC_FD_CC]); then
1138 libc_cv_gcc_exceptions=yes
1140 libc_cv_gcc_exceptions=no
1143 if test $libc_cv_gcc_exceptions = yes; then
1144 exceptions=-fexceptions
1146 AC_SUBST(exceptions)dnl
1148 if test "$base_machine" = alpha ; then
1149 AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl
1150 cat > conftest.c <<\EOF
1154 if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]);
1156 libc_cv_gcc_alpha_ng_prefix=yes
1158 libc_cv_gcc_alpha_ng_prefix=no
1161 if test $libc_cv_gcc_alpha_ng_prefix = yes ; then
1162 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$")
1164 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "")
1168 if test "$host_cpu" = powerpc ; then
1169 # Check for a bug present in at least versions 2.8.x of GCC
1170 # and versions 1.0.x of EGCS.
1171 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1172 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1173 libc_cv_c_asmcr0_bug='no',
1174 libc_cv_c_asmcr0_bug='yes')])
1175 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1176 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1180 AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
1181 [cat > conftest.c <<EOF
1182 #line __oline__ "configure"
1183 static char __EH_FRAME_BEGIN__[];
1186 #ifdef CHECK__register_frame
1187 __register_frame (__EH_FRAME_BEGIN__);
1188 __deregister_frame (__EH_FRAME_BEGIN__);
1190 #ifdef CHECK__register_frame_info
1191 __register_frame_info (__EH_FRAME_BEGIN__);
1192 __deregister_frame_info (__EH_FRAME_BEGIN__);
1197 /* FIXME: this is fragile. */
1207 dnl No \ in command here because it ends up inside ''.
1208 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
1209 -nostdlib -nostartfiles
1210 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1211 libc_cv_gcc_dwarf2_unwind_info=static
1213 libc_cv_gcc_dwarf2_unwind_info=no
1215 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
1216 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame
1217 -nostdlib -nostartfiles
1218 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1219 libc_cv_gcc_dwarf2_unwind_info=yes
1221 libc_cv_gcc_dwarf2_unwind_info=no
1225 case $libc_cv_gcc_dwarf2_unwind_info in
1227 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1230 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1231 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
1235 dnl Check whether compiler understands __builtin_expect.
1236 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1237 [cat > conftest.c <<EOF
1238 #line __oline__ "configure"
1241 a = __builtin_expect (a, 10);
1242 return a == 10 ? 0 : 1;
1245 dnl No \ in command here because it ends up inside ''.
1246 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1247 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1248 libc_cv_gcc_builtin_expect=yes
1250 libc_cv_gcc_builtin_expect=no
1253 if test "$libc_cv_gcc_builtin_expect" = yes; then
1254 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1257 dnl Check whether the compiler supports subtraction of local labels.
1258 AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
1259 [cat > conftest.c <<EOF
1261 #line __oline__ "configure"
1264 static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
1265 void *p = &&l1 + ar[a];
1274 dnl No \ in command here because it ends up inside ''.
1275 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1276 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1277 libc_cv_gcc_subtract_local_labels=yes
1279 libc_cv_gcc_subtract_local_labels=no
1282 if test "$libc_cv_gcc_subtract_local_labels" = yes; then
1283 AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
1286 dnl Check whether we have the gd library available.
1287 AC_MSG_CHECKING(for libgd)
1288 old_CFLAGS="$CFLAGS"
1289 CFLAGS="$CFLAGS $libgd_include"
1290 old_LDFLAGS="$LDFLAGS"
1291 LDFLAGS="$LDFLAGS $libgd_ldflags"
1293 LIBS="$LIBS -lgd -lpng -lz -lm"
1294 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1295 CFLAGS="$old_CFLAGS"
1296 LDFLAGS="$old_LDFLAGS"
1298 AC_MSG_RESULT($LIBGD)
1301 dnl check for the size of 'long double'.
1302 AC_CHECK_SIZEOF(long double, 0)
1303 sizeof_long_double=$ac_cv_sizeof_long_double
1304 AC_SUBST(sizeof_long_double)
1306 ### End of automated tests.
1307 ### Now run sysdeps configure fragments.
1309 # sysdeps configure fragments may set these with files to be linked below.
1313 # They also can set these variables.
1315 ldd_rewrite_script=no
1317 # Iterate over all the sysdep directories we will use, running their
1318 # configure fragments, and looking for a uname implementation.
1320 for dir in $sysnames; do
1323 *) dest=$srcdir/$dir ;;
1325 if test -r $dest/configure; then
1326 AC_MSG_RESULT(running configure fragment for $dest)
1330 if test -z "$uname"; then
1331 if test -r $dest/uname.c ||
1332 test -r $dest/uname.S ||
1333 { test -r $dest/syscalls.list &&
1334 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
1341 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
1343 # If we will use the generic uname implementation, we must figure out what
1344 # it will say by examining the system, and write the results in config-name.h.
1345 if test "$uname" = "sysdeps/generic"; then
1348 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
1350 if test $uname_sysname != $config_os; then
1351 config_release=`echo $config_os | sed s/$uname_sysname//`
1354 AC_DEFUN(LIBC_KERNEL_ID, [dnl
1355 if test -r /vmunix; then
1356 kernel_id=`strings /vmunix | grep UNIX`
1357 elif test -r /dynix; then
1358 kernel_id=`strings /dynix | grep DYNIX`
1364 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
1365 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1367 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
1369 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
1370 != x$config_release; then
1371 # The configuration release is a substring of the kernel release.
1372 libc_cv_uname_release=$kernel_release
1373 elif test x$config_release != x; then
1374 libc_cv_uname_release=$config_release
1375 elif test x$kernel_release != x; then
1376 libc_cv_uname_release=$kernel_release
1378 libc_cv_uname_release=unknown
1380 uname_release="$libc_cv_uname_release"
1382 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
1383 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1385 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
1387 if test -n "$kernel_version"; then
1388 libc_cv_uname_version="$kernel_version"
1390 libc_cv_uname_version=unknown
1392 uname_version="$libc_cv_uname_version"
1394 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
1395 config_uname=config-name.h:config-name.in
1397 # For non-generic uname, we don't need to create config-name.h at all.
1401 AC_MSG_CHECKING(stdio selection)
1404 libio) AC_DEFINE(USE_IN_LIBIO) ;;
1405 default) stdio=stdio ;;
1407 AC_MSG_RESULT($stdio)
1409 # Test for old glibc 2.0.x headers so that they can be removed properly
1410 # Search only in includedir.
1411 AC_MSG_CHECKING(for old glibc 2.0.x headers)
1412 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
1414 old_glibc_headers=yes
1416 old_glibc_headers=no
1418 AC_MSG_RESULT($old_glibc_headers)
1419 if test ${old_glibc_headers} = yes; then
1420 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
1421 AC_MSG_WARN(*** be removed.)
1423 AC_SUBST(old_glibc_headers)
1425 AC_SUBST(libc_cv_slibdir)
1426 AC_SUBST(libc_cv_localedir)
1427 AC_SUBST(libc_cv_sysconfdir)
1428 AC_SUBST(libc_cv_rootsbindir)
1430 AC_SUBST(use_ldconfig)
1431 AC_SUBST(ldd_rewrite_script)
1433 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
1434 if test $gnu_ld = yes; then
1435 AC_DEFINE(HAVE_GNU_LD)
1437 if test $gnu_as = yes; then
1438 AC_DEFINE(HAVE_GNU_AS)
1440 if test $elf = yes; then
1446 if test $shared = default; then
1447 if test $gnu_ld = yes; then
1450 # For now we do not assume shared libs are available. In future more
1451 # tests might become available.
1456 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
1458 cat > conftest.c <<EOF
1459 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
1460 # error PIC is default.
1463 if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
1467 AC_SUBST(pic_default)
1472 AC_SUBST(static_nss)
1473 AC_SUBST(nopic_initfini)
1478 *door*) linux_doors=yes ;;
1479 *) linux_doors=no ;;
1481 AC_SUBST(linux_doors)
1483 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
1486 config_makefile=Makefile
1489 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
1490 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
1494 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [
1495 case $CONFIG_FILES in *config.make*)
1496 echo "$config_vars" >> config.make;;
1498 test -d bits || mkdir bits], [config_vars='$config_vars'])