1 dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.53)dnl dnl Minimum Autoconf version required.
4 AC_INIT([GNU C Library], [(see version.h)], [glibc])
5 AC_CONFIG_SRCDIR([include/features.h])
6 AC_CONFIG_HEADERS([config.h])
7 AC_CONFIG_AUX_DIR([scripts])
9 if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then
10 AC_MSG_ERROR([you must configure in a separate build directory])
13 # This will get text that should go into config.make.
16 # Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
18 AC_HELP_STRING([--with-gd=DIR],
19 [find libgd include dir and library with prefix DIR]),
23 *) libgd_include="-I$withval/include"
24 libgd_ldflags="-L$withval/lib" ;;
27 AC_ARG_WITH([gd-include],
28 AC_HELP_STRING([--with-gd-include=DIR],
29 [find libgd include files in DIR]),
31 case "$with_gd_include" in
33 *) libgd_include="-I$withval" ;;
37 AC_HELP_STRING([--with-gd-lib=DIR],
38 [find libgd library files in DIR]),
40 case "$with_gd_lib" in
42 *) libgd_ldflags="-L$withval" ;;
46 if test -n "$libgd_include"; then
47 config_vars="$config_vars
48 CFLAGS-memusagestat.c = $libgd_include"
50 if test -n "$libgd_ldflags"; then
51 config_vars="$config_vars
52 libgd-LDFLAGS = $libgd_ldflags"
55 dnl Arguments to specify presence of other packages/features.
57 AC_HELP_STRING([--with-fp],
58 [if using floating-point hardware @<:@default=yes@:>@]),
62 AC_ARG_WITH([binutils],
63 AC_HELP_STRING([--with-binutils=PATH],
64 [specify location of binutils (as and ld)]),
65 [path_binutils=$withval],
68 AC_HELP_STRING([--with-elf],
69 [if using the ELF object format]),
72 AC_ARG_WITH([selinux],
73 AC_HELP_STRING([--with-selinux],
74 [if building with SELinux support]),
75 [with_selinux=$withval],
78 AC_HELP_STRING([--with-xcoff],
79 [if using the XCOFF object format]),
83 AC_HELP_STRING([--without-cvs],
84 [if CVS should not be used]),
87 if test "$with_cvs" = yes; then
88 if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
95 AC_ARG_WITH([headers],
96 AC_HELP_STRING([--with-headers=PATH],
97 [location of system headers to use
98 (for example /usr/src/linux/include)
99 @<:@default=compiler default@:>@]),
100 [sysheaders=$withval],
103 AC_ARG_ENABLE([sanity-checks],
104 AC_HELP_STRING([--disable-sanity-checks],
105 [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]),
106 [enable_sanity=$enableval],
109 AC_SUBST(enable_check_abi)
110 AC_ARG_ENABLE([check-abi],
111 AC_HELP_STRING([--enable-check-abi],
112 [do "make check-abi" in "make check" (no/warn/yes)
113 @<:@default=no@:>@]),
114 [enable_check_abi=$enableval],
115 [enable_check_abi=no])
117 dnl Arguments to enable or disable building the static, shared, profiled,
118 dnl and -fomit-frame-pointer libraries.
119 dnl I've disabled this for now since we cannot build glibc without static
120 dnl libraries built in the moment.
121 dnl AC_ARG_ENABLE([static],
122 dnl AC_HELP_STRING([--enable-static],
123 dnl [build static library @<:@default=yes@:>@]),
124 dnl [static=$enableval],
127 AC_ARG_ENABLE([shared],
128 AC_HELP_STRING([--enable-shared],
129 [build shared library @<:@default=yes if GNU ld & ELF@:>@]),
132 AC_ARG_ENABLE([profile],
133 AC_HELP_STRING([--enable-profile],
134 [build profiled library @<:@default=yes@:>@]),
135 [profile=$enableval],
137 AC_ARG_ENABLE([omitfp],
138 AC_HELP_STRING([--enable-omitfp],
139 [build undebuggable optimized library @<:@default=no@:>@]),
142 AC_ARG_ENABLE([bounded],
143 AC_HELP_STRING([--enable-bounded],
144 [build with runtime bounds checking @<:@default=no@:>@]),
145 [bounded=$enableval],
147 AC_ARG_ENABLE([versioning],
148 AC_HELP_STRING([--disable-versioning],
149 [do not include versioning information in the library objects @<:@default=yes if supported@:>@]),
150 [enable_versioning=$enableval],
151 [enable_versioning=yes])
153 AC_ARG_ENABLE([oldest-abi],
154 AC_HELP_STRING([--enable-oldest-abi=ABI],
155 [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]),
156 [oldest_abi=$enableval],
158 if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
161 AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
165 AC_ARG_ENABLE([stackguard-randomization],
166 AC_HELP_STRING([--enable-stackguard-randomization],
167 [initialize __stack_chk_guard canary with a random number at program start]),
168 [enable_stackguard_randomize=$enableval],
169 [enable_stackguard_randomize=no])
170 if test "$enable_stackguard_randomize" = yes; then
171 AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE)
174 dnl Generic infrastructure for drop-in additions to libc.
175 AC_ARG_ENABLE([add-ons],
176 AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@],
177 [configure and build add-ons in DIR1,DIR2,...
178 search for add-ons if no parameter given]),
179 , [enable_add_ons=yes])
181 dnl Let the user avoid using TLS. Don't know why but...
183 AC_HELP_STRING([--with-tls],
184 [enable support for TLS]),
188 AC_ARG_WITH([__thread],
189 AC_HELP_STRING([--without-__thread],
190 [do not use TLS features even when supporting them]),
191 [use__thread=$withval],
194 AC_ARG_ENABLE([hidden-plt],
195 AC_HELP_STRING([--disable-hidden-plt],
196 [do not hide internal function calls to avoid PLT]),
199 if test "x$hidden" = xno; then
203 AC_ARG_ENABLE([bind-now],
204 AC_HELP_STRING([--enable-bind-now],
205 [disable lazy relocations in DSOs]),
206 [bindnow=$enableval],
210 dnl On some platforms we cannot use dynamic loading. We must provide
211 dnl static NSS modules.
212 AC_ARG_ENABLE([static-nss],
213 AC_HELP_STRING([--enable-static-nss],
214 [build static NSS modules @<:@default=no@:>@]),
215 [static_nss=$enableval],
217 dnl Enable static NSS also if we build no shared objects.
218 if test x"$static_nss" = xyes || test x"$shared" = xno; then
220 AC_DEFINE(DO_STATIC_NSS)
223 AC_ARG_ENABLE([force-install],
224 AC_HELP_STRING([--disable-force-install],
225 [don't force installation of files from this package, even if they are older than the installed files]),
226 [force_install=$enableval],
228 AC_SUBST(force_install)
230 dnl On some platforms we allow dropping compatibility with all kernel
232 AC_ARG_ENABLE([kernel],
233 AC_HELP_STRING([--enable-kernel=VERSION],
234 [compile for compatibility with kernel not older than VERSION]),
235 [minimum_kernel=$enableval],
237 dnl Prevent unreasonable values.
238 if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
239 # Better nothing than this.
242 if test "$minimum_kernel" = current; then
243 minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
247 dnl For the development we sometimes want gcc to issue even more warnings.
248 dnl This is not the default since many of the extra warnings are not
250 AC_ARG_ENABLE([all-warnings],
251 AC_HELP_STRING([--enable-all-warnings],
252 [enable all useful warnings gcc can issue]),
253 [all_warnings=$enableval],
255 AC_SUBST(all_warnings)
259 # The way shlib-versions is used to generate soversions.mk uses a
260 # fairly simplistic model for name recognition that can't distinguish
261 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
262 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
263 # tell. This doesn't get used much beyond that, so it's fairly safe.
268 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
272 # We keep the original values in `$config_*' and never modify them, so we
273 # can write them unchanged into config.make. Everything else uses
274 # $machine, $vendor, and $os, and changes them whenever convenient.
275 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
277 # Don't allow vendor == "unknown"
278 test "$config_vendor" = unknown && config_vendor=
279 config_os="`echo $config_os | sed 's/^unknown-//'`"
281 # Some configurations imply other options.
283 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
284 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
286 gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6*)
287 # These systems (almost) always use the ELF format.
291 # These systems are always xcoff
297 # The configure fragment of an add-on port can modify these to supplement
298 # or override the table in the case statement below. No fragment should
299 # ever change the config_* variables, however.
300 machine=$config_machine
301 vendor=$config_vendor
304 # config.guess on some IBM machines says `rs6000' instead of `powerpc'.
306 if test "$machine" = rs6000; then
310 # Braindead PowerPC box with absolutely no FPU.
311 case "$machine-$host_os" in
319 AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]),
322 yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;;
324 *) submachine="$withval" ;;
329 # An add-on can set this when it wants to disable the sanity check below.
332 dnl Having this here, though empty, makes sure that if add-ons' fragments
333 dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then
334 dnl our AC_OUTPUT will actually use it.
337 case "$enable_add_ons" in
340 add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
341 sed 's@/[[^/]]*$@@' | sort | uniq`
342 add_ons_automatic=yes
344 *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
345 add_ons_automatic=no ;;
351 if test x"$add_ons" != x; then
352 for f in $add_ons; do
357 *** It seems that you're using an old \`crypt' add-on. crypt is now
358 *** part of glibc and using the old add-on will not work with this
359 *** release. Start again with fresh sources and without the old
360 *** \`crypt' add-on.])
364 *** It seems that you're using an old \`localedata' add-on. localedata
365 *** is now part of glibc and using the old add-on will not work with
366 *** this release. Start again with fresh sources and without the old
367 *** \`localedata' add-on.])
372 # Now source each add-on's configure fragment.
373 # The fragments can use $srcdir/$libc_add_on to find themselves,
374 # and test $add_ons_automatic to see if they were explicitly requested.
375 # A fragment can clear (or even change) $libc_add_on to affect
376 # whether it goes into the list to be actually used in the build.
378 for libc_add_on in $add_ons; do
379 # Test whether such a directory really exists.
380 # It can be absolute, or relative to $srcdir, or relative to the build dir.
381 case "$libc_add_on" in
383 libc_add_on_srcdir=$libc_add_on
386 test -d "$srcdir/$libc_add_on" || {
387 if test -d "$libc_add_on"; then
388 libc_add_on="`pwd`/$libc_add_on"
390 AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist)
393 libc_add_on_srcdir=$srcdir/$libc_add_on
397 libc_add_on_frag=$libc_add_on_srcdir/configure
398 libc_add_on_canonical=
399 if test -r "$libc_add_on_frag"; then
400 AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on)
401 libc_add_on_canonical=unknown
403 . "$libc_add_on_frag"
404 test -z "$libc_add_on" || {
405 configured_add_ons="$configured_add_ons $libc_add_on"
406 if test "x$libc_add_on_canonical" = xunknown; then
407 AC_MSG_ERROR(fragment must set \$libc_add_on_canonical)
409 for d in $libc_add_on_subdirs; do
410 case "$libc_add_on" in
411 /*) subdir_srcdir="$libc_add_on" ;;
412 *) subdir_srcdir="\$(..)$libc_add_on" ;;
416 d="${libc_add_on_canonical:-$libc_add_on}"
422 subdir_srcdir="$subdir_srcdir/$d"
425 d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
426 add_on_subdirs="$add_on_subdirs $d"
427 test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
428 $d-srcdir = $subdir_srcdir"
432 if test -n "$libc_add_on"; then
433 if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null`
435 AC_MSG_CHECKING(add-on $libc_add_on for preconfigure fragments)
436 for frag in $frags; do
437 name=`echo "$frag" | sed 's@/[[^/]]*$@@;s@^.*/@@'`
438 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
443 use_add_ons="$use_add_ons $libc_add_on"
444 add_ons_pfx="$add_ons_pfx $libc_add_on/"
445 test -z "$libc_add_on_canonical" ||
446 add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
449 # Use echo to strip excess whitespace.
450 add_ons="`echo $use_add_ons`"
453 AC_SUBST(add_on_subdirs)
457 ### I put this here to prevent those annoying emails from people who cannot
458 ### read and try to compile glibc on unsupported platforms. --drepper
460 ### By using the undocumented --enable-hacker-mode option for configure
461 ### one can skip this test to make the configuration not fail for unsupported
464 if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
465 case "$machine-$host_os" in
466 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
469 echo "*** The GNU C library is currently not available for this platform."
470 echo "*** So far nobody cared to port it and if there is no volunteer it"
471 echo "*** might never happen. So, if you have interest to see glibc on"
472 echo "*** this platform visit"
473 echo "*** http://www.gnu.org/software/libc/porting.html"
474 echo "*** and join the group of porters"
480 dnl We need to use [ and ] for other purposes for a while now.
482 # Expand the configuration machine name into a subdirectory by architecture
483 # type and particular chip. If an add-on configure fragment already set
484 # base_machine, we don't change it.
485 test -n "$base_machine" || case "$machine" in
486 a29k | am29000) base_machine=a29k machine=a29k ;;
487 alpha*) base_machine=alpha machine=alpha/$machine ;;
488 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
489 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
490 i[34567]86) base_machine=i386 machine=i386/$machine ;;
491 ia64) base_machine=ia64 machine=ia64 ;;
492 m88???) base_machine=m88k machine=m88k/$machine ;;
493 m88k) base_machine=m88k machine=m88k/m88100 ;;
494 powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;;
495 powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;;
496 s390) base_machine=s390 machine=s390/s390-32 ;;
497 s390x) base_machine=s390 machine=s390/s390-64 ;;
498 sh3*) base_machine=sh machine=sh/sh3 ;;
499 sh4*) base_machine=sh machine=sh/sh4 ;;
501 base_machine=sparc machine=sparc/sparc32 ;;
502 sparcv8 | supersparc | hypersparc)
503 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
504 sparcv8plus | sparcv8plusa | sparcv9)
505 base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
506 sparcv8plusb | sparcv9b)
507 base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;;
509 base_machine=sparc machine=sparc/sparc64 ;;
511 base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
512 *) base_machine=$machine ;;
515 AC_SUBST(base_machine)
517 if test "$base_machine" = "i386"; then
518 AC_DEFINE(USE_REGPARMS)
521 # Compute the list of sysdep directories for this configuration.
522 # This can take a while to compute.
523 sysdep_dir=$srcdir/sysdeps
524 AC_MSG_CHECKING(sysdep dirs)
525 dnl We need to use [ and ] for other purposes for a while now.
527 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
528 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
533 netbsd* | 386bsd* | freebsd* | bsdi*)
534 base_os=unix/bsd/bsd4.4 ;;
535 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
537 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
540 base_os=unix/sysv/irix6/$os ;;
542 base_os=unix/sysv/sysv4 ;;
544 base_os=unix/sysv/hpux/$os ;;
546 base_os=unix/sysv/aix/aix4.3 ;;
548 base_os=standalone ;;
553 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
556 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
560 o=`echo $tail | sed 's/[0-9]*$//'`
561 if test $o != $tail; then
564 # For linux-gnu, try linux-gnu, then linux.
565 o=`echo $tail | sed 's/-.*$//'`
566 if test $o != $tail; then
570 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
573 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
579 # For sparc/sparc32, try sparc/sparc32 and then sparc.
581 tail=$machine${submachine:+/$submachine}
582 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
584 # Prepend the machine's FPU directory unless --without-fp.
585 if test "$with_fp" = yes; then
588 mach="$mach /$1/nofpu"
594 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
597 # Find what sysdep directories exist.
600 for b in $base ''; do
601 for m0 in $mach ''; do
602 for v in /$vendor ''; do
603 test "$v" = / && continue
604 for o in /$ostry ''; do
605 test "$o" = / && continue
606 for m in $mach ''; do
607 for d in $add_ons_pfx ''; do
608 for a in $add_ons_sfx ''; do
609 if test -n "$m0$m0sub$b$v$o$m$msub"; then
610 try_srcdir="${srcdir}/"
614 try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a"
615 test -n "$enable_debug_configure" &&
616 echo "$0 [DEBUG]: try $try" >&2
617 if test -d "$try_srcdir$try"; then
618 sysnames="$sysnames $try"
619 { test -n "$o" || test -n "$b"; } && os_used=t
620 { test -n "$m" || test -n "$m0"; } && machine_used=t
622 x*/$submachine) submachine_used=t ;;
624 if test -n "$d"; then
625 case "$sysnames_add_ons" in
627 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
640 if test -z "$os_used" && test "$os" != none; then
641 AC_MSG_ERROR(Operating system $os is not supported.)
643 if test -z "$machine_used" && test "$machine" != none; then
644 AC_MSG_ERROR(The $machine is not supported.)
646 if test -z "$submachine_used" && test -n "$submachine"; then
647 AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.)
651 # We have now validated the configuration.
654 # If using ELF, look for an `elf' subdirectory of each machine directory.
655 # We prepend these rather than inserting them whereever the machine appears
656 # because things specified by the machine's ELF ABI should override
657 # OS-specific things, and should always be the same for any OS on the
658 # machine (otherwise what's the point of an ABI?).
659 if test "$elf" = yes; then
661 for d in $add_ons_pfx ''; do
663 if test -d $srcdir/${d}sysdeps$m/elf; then
664 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
668 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
672 # Expand the list of system names into a full list of directories
673 # from each element's parent name and Implies file (if present).
676 while test $# -gt 0; do
680 case " $names " in *" $name "*)
681 # Already in the list.
685 # Report each name as we discover it, so there is no long pause in output.
686 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
688 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
692 *) xsrcdir=$srcdir/ ;;
694 test -n "$enable_debug_configure" &&
695 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
697 if test -f $xsrcdir$name/Implies; then
698 # Collect more names from the `Implies' file (removing comments).
699 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
701 for x in $implied_candidate; do
703 if test -d $xsrcdir$name_base/$x; then
704 implied="$implied $name_base/$x";
707 for d in $add_ons_pfx ''; do
711 *) try_srcdir=$srcdir/ ;;
713 test -n "$enable_debug_configure" &&
714 echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2
715 if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
717 implied="$implied $try"
719 case "$sysnames_add_ons" in
721 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
725 if test $found = no; then
726 AC_MSG_WARN($name/Implies specifies nonexistent $x)
733 # Add NAME to the list of names.
736 # Find the parent of NAME, using the empty string if it has none.
738 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
741 # Add the names implied by NAME, and NAME's parent (if it has one), to
742 # the list of names to be processed (the argument list). We prepend the
743 # implied names to the list and append the parent. We want implied
744 # directories to come before further directories inferred from the
745 # configuration components; this ensures that for sysv4, unix/common
746 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
748 sysnames="`echo $implied $* $parent`"
749 test -n "$sysnames" && set $sysnames
752 # Add the default directories.
753 default_sysnames=sysdeps/generic
754 if test "$elf" = yes; then
755 default_sysnames="sysdeps/generic/elf $default_sysnames"
757 sysnames="$names $default_sysnames"
759 # The other names were emitted during the scan.
760 AC_MSG_RESULT($default_sysnames)
762 # Collect the list of add-ons that supply partial sysdeps trees.
764 for add_on in $add_ons; do
767 *) xsrcdir="$srcdir/" ;;
770 test -d "$xsrcdir$add_on/sysdeps" || {
771 case "$configured_add_ons " in
774 AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree)
780 sysdeps_add_ons="$sysdeps_add_ons $add_on"
781 case "$sysnames_add_ons" in
784 AC_MSG_WARN(add-on $add_on contributed no sysdeps directories)
789 for d in $sysnames; do
791 $add_on/sysdeps/*) ;;
794 (cd "$xsrcdir$d" && for f in *[[!~]]; do
798 test -d "$ff" || { test -e "$ff" && exit 88; }
802 test -d "$f" || { test -e "$f" && exit 88; }
806 if test $? -eq 88; then
811 if test $found = no; then
812 AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories)
815 AC_SUBST(sysdeps_add_ons)
821 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
822 # The makefiles need to use a different form to find it in $srcdir.
823 INSTALL='\$(..)./scripts/install-sh -c'
828 if test $host != $build; then
829 AC_CHECK_PROGS(BUILD_CC, gcc cc)
831 AC_SUBST(cross_compiling)
833 # We need the C++ compiler only for testing.
836 AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in
838 # Accept binutils 2.13 or newer.
839 AC_CHECK_PROG_VER(AS, $AS, --version,
840 [GNU assembler.* \([0-9]*\.[0-9.]*\)],
841 [2.1[3-9]*], AS=: critic_missing="$critic_missing as")
842 AC_CHECK_PROG_VER(LD, $LD, --version,
843 [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
844 [2.1[3-9]*], LD=: critic_missing="$critic_missing ld")
846 # We need the physical current working directory. We cannot use the
847 # "pwd -P" shell builtin since that's not portable. Instead we try to
848 # find a pwd binary. Note that assigning to the PWD environment
849 # variable might have some interesting side effects, so we don't do
851 AC_PATH_PROG(PWD_P, pwd, no)
852 if test "$PWD_P" = no; then
853 AC_MSG_ERROR(*** A pwd binary could not be found.)
856 # These programs are version sensitive.
858 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
859 [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ],
860 critic_missing="$critic_missing gcc")
861 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
862 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
863 [3.79* | 3.[89]*], critic_missing="$critic_missing make")
865 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
866 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
867 [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*],
868 MSGFMT=: aux_missing="$aux_missing msgfmt")
869 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
870 [GNU texinfo.* \([0-9][0-9.]*\)],
872 MAKEINFO=: aux_missing="$aux_missing makeinfo")
873 AC_CHECK_PROG_VER(SED, sed, --version,
874 [GNU sed version \([0-9]*\.[0-9.]*\)],
875 [3.0[2-9]*|3.[1-9]*|[4-9]*],
876 SED=: aux_missing="$aux_missing sed")
878 AC_CHECK_PROGS(AUTOCONF, autoconf, no)
880 xno|x|x:) AUTOCONF=no ;;
883 whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl
884 if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then
885 libc_cv_autoconf_works=yes
887 libc_cv_autoconf_works=no
889 test $libc_cv_autoconf_works = yes || AUTOCONF=no
892 if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then
893 # If --without-cvs they probably won't change configure.in, so no complaints.
894 aux_missing="$aux_missing autoconf"
897 test -n "$critic_missing" && AC_MSG_ERROR([
898 *** These critical programs are missing or too old:$critic_missing
899 *** Check the INSTALL file for required versions.])
901 test -n "$aux_missing" && AC_MSG_WARN([
902 *** These auxiliary programs are missing or incompatible versions:$aux_missing
903 *** some features will be disabled.
904 *** Check the INSTALL file for required versions.])
906 # if using special system headers, find out the compiler's sekrit
907 # header directory and add that to the list. NOTE: Only does the right
908 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
909 if test -n "$sysheaders"; then
910 ccheaders=`$CC -print-file-name=include`
911 SYSINCLUDES="-nostdinc -isystem $ccheaders \
912 -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"
913 if test -n "$CXX"; then
914 cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` &&
915 cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` &&
916 cxxheaders=`$CXX -print-file-name=../../../../include/c++/`"$cxxversion" &&
917 CXX_SYSINCLUDES="-isystem $cxxheaders \
918 -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward"
921 AC_SUBST(SYSINCLUDES)
922 AC_SUBST(CXX_SYSINCLUDES)
924 # check if ranlib is necessary
925 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
926 cat > conftest.c <<EOF
931 $CC $CFLAGS $CPPFLAGS -c conftest.c
932 $AR cr conftest.a conftest.o
933 cp conftest.a conftest2.a
935 if cmp -s conftest.a conftest2.a; then
936 libc_cv_ranlib_necessary=no
938 libc_cv_ranlib_necessary=yes
941 if test "$libc_cv_ranlib_necessary" = no; then
945 # Test if LD_LIBRARY_PATH contains the notation for the current directory
946 # since this would lead to problems installing/building glibc.
947 # LD_LIBRARY_PATH contains the current directory if one of the following
949 # - one of the terminals (":" and ";") is the first or last sign
950 # - two terminals occur directly after each other
951 # - the path contains an element with a dot in it
952 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
954 case ${LD_LIBRARY_PATH} in
955 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
956 ld_library_path_setting="contains current directory"
959 ld_library_path_setting="ok"
963 AC_MSG_RESULT($ld_library_path_setting)
964 if test "$ld_library_path_setting" != "ok"; then
966 *** LD_LIBRARY_PATH shouldn't contain the current directory when
967 *** building glibc. Please change the environment variable
968 *** and run configure again.])
971 AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl
972 if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then
973 libc_cv_gcc_static_libgcc=
975 libc_cv_gcc_static_libgcc=-static-libgcc
977 AC_SUBST(libc_cv_gcc_static_libgcc)
979 AC_PATH_PROG(BASH, bash, no)
980 if test "$BASH" != no &&
981 $BASH -c 'test "$BASH_VERSINFO" \
982 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
983 libc_cv_have_bash2=yes
985 libc_cv_have_bash2=no
987 AC_SUBST(libc_cv_have_bash2)
989 dnl We need a ksh compatible shell for tzselect.
990 if test "$BASH" = no; then
991 AC_PATH_PROG(KSH, ksh, no)
992 if test "$KSH" = no; then
1000 libc_cv_have_ksh=yes
1002 AC_SUBST(libc_cv_have_ksh)
1005 AC_PATH_PROG(PERL, perl, no)
1006 if test "$PERL" != no &&
1007 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
1010 AC_PATH_PROG(INSTALL_INFO, install-info, no,
1011 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
1012 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
1014 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
1015 echo '#include <stddef.h>
1016 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
1017 if eval "$ac_cpp conftest.c 2>/dev/null" \
1018 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
1019 libc_cv_signed_size_t=no
1021 libc_cv_signed_size_t=yes
1024 if test $libc_cv_signed_size_t = yes; then
1025 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
1026 cat >> confdefs.h <<\EOF
1027 #undef __SIZE_TYPE__
1028 #define __SIZE_TYPE__ unsigned
1032 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
1034 [#define __need_size_t
1035 #define __need_wchar_t
1038 #include <stddef.h>], [size_t size; wchar_t wchar;
1040 #error stddef.h ignored __need_*
1042 if (&size == NULL || &wchar == NULL) abort ();],
1043 libc_cv_friendly_stddef=yes,
1044 libc_cv_friendly_stddef=no)])
1045 if test $libc_cv_friendly_stddef = yes; then
1046 config_vars="$config_vars
1047 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
1050 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
1051 libc_cv_need_minus_P, [dnl
1052 cat > conftest.S <<EOF
1053 #include "confdefs.h"
1054 /* Nothing whatsoever. */
1056 if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then
1057 libc_cv_need_minus_P=no
1059 libc_cv_need_minus_P=yes
1062 if test $libc_cv_need_minus_P = yes; then
1063 config_vars="$config_vars
1064 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
1067 AC_MSG_CHECKING(whether .text pseudo-op must be used)
1068 AC_CACHE_VAL(libc_cv_dot_text, [dnl
1069 cat > conftest.s <<EOF
1073 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1074 libc_cv_dot_text=.text
1077 if test -z "$libc_cv_dot_text"; then
1083 AC_CACHE_CHECK(for assembler global-symbol directive,
1084 libc_cv_asm_global_directive, [dnl
1085 libc_cv_asm_global_directive=UNKNOWN
1086 for ac_globl in .globl .global .EXPORT; do
1087 cat > conftest.s <<EOF
1092 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1093 libc_cv_asm_global_directive=${ac_globl}
1096 test $libc_cv_asm_global_directive != UNKNOWN && break
1098 if test $libc_cv_asm_global_directive = UNKNOWN; then
1099 AC_MSG_ERROR(cannot determine asm global directive)
1101 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
1104 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
1105 cat > conftest.s <<EOF
1108 .set glibc_conftest_frobozz,foo
1109 $libc_cv_asm_global_directive glibc_conftest_frobozz
1111 # The alpha-dec-osf1 assembler gives only a warning for `.set'
1112 # (but it doesn't work), so we must do a linking check to be sure.
1113 cat > conftest1.c <<\EOF
1114 extern int glibc_conftest_frobozz;
1115 void _start() { glibc_conftest_frobozz = 1; }
1117 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1118 -nostartfiles -nostdlib \
1119 -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1120 libc_cv_asm_set_directive=yes
1122 libc_cv_asm_set_directive=no
1125 if test $libc_cv_asm_set_directive = yes; then
1126 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
1129 AC_CACHE_CHECK(for assembler .type directive prefix,
1130 libc_cv_asm_type_prefix, [dnl
1131 libc_cv_asm_type_prefix=no
1132 for ac_try_prefix in '@' '%' '#'; do
1133 cat > conftest.s <<EOF
1135 ${libc_cv_asm_global_directive} foo
1136 .type foo, ${ac_try_prefix}object
1141 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1142 libc_cv_asm_type_prefix=${ac_try_prefix}
1145 test "x$libc_cv_asm_type_prefix" != xno && break
1147 if test "x$libc_cv_asm_type_prefix" != xno; then
1148 AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix})
1151 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
1152 [cat > conftest.s <<EOF
1155 .symver _sym,sym@VERS
1157 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1158 libc_cv_asm_symver_directive=yes
1160 libc_cv_asm_symver_directive=no
1163 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
1164 if test $libc_cv_asm_symver_directive = yes; then
1165 cat > conftest.s <<EOF
1168 .symver _sym,sym@VERS
1170 cat > conftest.map <<EOF
1179 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1180 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared
1181 -o conftest.so conftest.o
1182 -nostartfiles -nostdlib
1183 -Wl,--version-script,conftest.map
1184 1>&AS_MESSAGE_LOG_FD]);
1186 libc_cv_ld_version_script_option=yes
1188 libc_cv_ld_version_script_option=no
1191 libc_cv_ld_version_script_option=no
1194 libc_cv_ld_version_script_option=no
1197 if test $shared != no &&
1198 test $libc_cv_asm_symver_directive = yes &&
1199 test $libc_cv_ld_version_script_option = yes &&
1200 test $enable_versioning = yes; then
1202 AC_DEFINE(DO_VERSIONING)
1206 AC_SUBST(VERSIONING)
1208 if test $elf = yes && test $shared != no && test $VERSIONING = no; then
1210 *** WARNING: You should not compile GNU libc without versioning. Not using
1211 *** versioning will introduce incompatibilities so that old binaries
1212 *** will not run anymore.
1213 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
1215 if test $elf = yes; then
1216 AC_CACHE_CHECK(for .previous assembler directive,
1217 libc_cv_asm_previous_directive, [dnl
1218 cat > conftest.s <<EOF
1219 .section foo_section
1222 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1223 libc_cv_asm_previous_directive=yes
1225 libc_cv_asm_previous_directive=no
1228 if test $libc_cv_asm_previous_directive = yes; then
1229 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
1231 AC_CACHE_CHECK(for .popsection assembler directive,
1232 libc_cv_asm_popsection_directive, [dnl
1233 cat > conftest.s <<EOF
1234 .pushsection foo_section
1237 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1238 libc_cv_asm_popsection_directive=yes
1240 libc_cv_asm_popsection_directive=no
1243 if test $libc_cv_asm_popsection_directive = yes; then
1244 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
1247 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
1248 libc_cv_asm_protected_directive, [dnl
1249 cat > conftest.s <<EOF
1255 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1256 libc_cv_asm_protected_directive=yes
1258 libc_cv_asm_protected_directive=no
1261 AC_SUBST(libc_cv_asm_protected_directive)
1262 AC_DEFINE(HAVE_PROTECTED)
1263 AC_DEFINE(HAVE_HIDDEN)
1265 if test $libc_cv_asm_protected_directive = yes; then
1266 AC_CACHE_CHECK(whether __attribute__((visibility())) is supported,
1267 libc_cv_visibility_attribute,
1268 [cat > conftest.c <<EOF
1269 int foo __attribute__ ((visibility ("hidden"))) = 1;
1270 int bar __attribute__ ((visibility ("protected"))) = 1;
1272 libc_cv_visibility_attribute=no
1273 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1274 if grep '\.hidden.*foo' conftest.s >/dev/null; then
1275 if grep '\.protected.*bar' conftest.s >/dev/null; then
1276 libc_cv_visibility_attribute=yes
1282 if test $libc_cv_visibility_attribute = yes; then
1283 AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE)
1287 if test $libc_cv_visibility_attribute = yes; then
1288 AC_CACHE_CHECK(for broken __attribute__((visibility())),
1289 libc_cv_broken_visibility_attribute,
1290 [cat > conftest.c <<EOF
1292 int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden")));
1293 int bar (int x) { return x; }
1295 libc_cv_broken_visibility_attribute=yes
1296 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then
1298 if grep '\.hidden[ _]foo' conftest.s >/dev/null; then
1300 libc_cv_broken_visibility_attribute=no
1303 rm -f conftest.c conftest.s
1305 if test $libc_cv_broken_visibility_attribute = yes; then
1306 AC_DEFINE(HAVE_BROKEN_VISIBILITY_ATTRIBUTE)
1310 AC_CACHE_CHECK(for broken __attribute__((alias())),
1311 libc_cv_broken_alias_attribute,
1312 [cat > conftest.c <<EOF
1313 extern int foo (int x) __asm ("xyzzy");
1314 int bar (int x) { return x; }
1315 extern __typeof (bar) foo __attribute ((weak, alias ("bar")));
1317 extern __typeof (dfoo) dfoo __asm ("abccb");
1320 libc_cv_broken_alias_attribute=yes
1321 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1322 if grep 'xyzzy' conftest.s >/dev/null &&
1323 grep 'abccb' conftest.s >/dev/null; then
1324 libc_cv_broken_alias_attribute=no
1327 rm -f conftest.c conftest.s
1329 if test $libc_cv_broken_alias_attribute = yes; then
1330 AC_DEFINE(HAVE_BROKEN_ALIAS_ATTRIBUTE)
1333 if test $libc_cv_visibility_attribute = yes; then
1334 AC_CACHE_CHECK(whether to put _rtld_local into .sdata section,
1335 libc_cv_have_sdata_section,
1336 [echo "int i;" > conftest.c
1337 libc_cv_have_sdata_section=no
1338 if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
1339 | grep '\.sdata' >/dev/null; then
1340 libc_cv_have_sdata_section=yes
1342 rm -f conftest.c conftest.so
1344 if test $libc_cv_have_sdata_section = yes; then
1345 AC_DEFINE(HAVE_SDATA_SECTION)
1349 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
1350 libc_cv_initfini_array, [dnl
1351 cat > conftest.c <<EOF
1352 int _start (void) { return 0; }
1353 int __start (void) { return 0; }
1354 int foo (void) { return 1; }
1355 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
1357 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
1358 -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
1360 if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then
1361 libc_cv_initfini_array=yes
1363 libc_cv_initfini_array=no
1366 libc_cv_initfini_array=no
1369 if test $libc_cv_initfini_array != yes; then
1370 AC_MSG_ERROR([Need linker with .init_array/.fini_array support.])
1373 AC_CACHE_CHECK(for libunwind-support in compiler,
1374 libc_cv_cc_with_libunwind, [
1375 cat > conftest.c <<EOF
1376 int main (void) { return 0; }
1378 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \
1379 conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then
1380 libc_cv_cc_with_libunwind=yes
1382 libc_cv_cc_with_libunwind=no
1385 AC_SUBST(libc_cv_cc_with_libunwind)
1386 if test $libc_cv_cc_with_libunwind = yes; then
1387 AC_DEFINE(HAVE_CC_WITH_LIBUNWIND)
1390 AC_CACHE_CHECK(for -z nodelete option,
1391 libc_cv_z_nodelete, [dnl
1392 cat > conftest.c <<EOF
1393 int _start (void) { return 42; }
1395 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1396 -fPIC -shared -o conftest.so conftest.c
1397 -nostartfiles -nostdlib
1398 -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD])
1400 libc_cv_z_nodelete=yes
1402 libc_cv_z_nodelete=no
1405 AC_SUBST(libc_cv_z_nodelete)
1407 AC_CACHE_CHECK(for -z nodlopen option,
1408 libc_cv_z_nodlopen, [dnl
1409 cat > conftest.c <<EOF
1410 int _start (void) { return 42; }
1412 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1413 -fPIC -shared -o conftest.so conftest.c
1414 -nostartfiles -nostdlib
1415 -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD])
1417 libc_cv_z_nodlopen=yes
1419 libc_cv_z_nodlopen=no
1422 AC_SUBST(libc_cv_z_nodlopen)
1424 AC_CACHE_CHECK(for -z initfirst option,
1425 libc_cv_z_initfirst, [dnl
1426 cat > conftest.c <<EOF
1427 int _start (void) { return 42; }
1429 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1430 -fPIC -shared -o conftest.so conftest.c
1431 -nostartfiles -nostdlib
1432 -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD])
1434 libc_cv_z_initfirst=yes
1436 libc_cv_z_initfirst=no
1439 AC_SUBST(libc_cv_z_initfirst)
1441 AC_CACHE_CHECK(for -z relro option,
1442 libc_cv_z_relro, [dnl
1444 if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD])
1446 if AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep DATA_SEGMENT_RELRO_END 1>&AS_MESSAGE_LOG_FD])
1451 AC_SUBST(libc_cv_z_relro)
1452 if test $libc_cv_z_relro = yes; then
1453 AC_DEFINE(HAVE_Z_RELRO)
1456 AC_CACHE_CHECK(for -Bgroup option,
1457 libc_cv_Bgroup, [dnl
1458 cat > conftest.c <<EOF
1459 int _start (void) { return 42; }
1461 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1462 -fPIC -shared -o conftest.so conftest.c
1463 -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD])
1470 AC_SUBST(libc_cv_Bgroup)
1472 AC_CACHE_CHECK(for libgcc_s suffix,
1473 libc_cv_libgcc_s_suffix, [dnl
1474 cat > conftest.c <<EOF
1475 int main (void) { return 0; }
1478 libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1479 -fPIC -shared -shared-libgcc -o conftest.so \
1480 conftest.c -v 2>&1 >/dev/null \
1481 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
1484 AC_SUBST(libc_cv_libgcc_s_suffix)
1486 AC_CACHE_CHECK(for --as-needed option,
1487 libc_cv_as_needed, [dnl
1488 cat > conftest.c <<EOF
1489 int main (void) { return 0; }
1491 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1492 -fPIC -shared -o conftest.so conftest.c
1493 -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed
1494 -nostdlib 1>&AS_MESSAGE_LOG_FD])
1496 libc_cv_as_needed=yes
1498 libc_cv_as_needed=no
1501 AC_SUBST(libc_cv_as_needed)
1504 AC_CACHE_CHECK(whether --noexecstack is desirable for .S files,
1505 libc_cv_as_noexecstack, [dnl
1506 cat > conftest.c <<EOF
1509 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS
1510 -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \
1511 && grep -q .note.GNU-stack conftest.s \
1512 && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wa,--noexecstack
1513 -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD])
1515 libc_cv_as_noexecstack=yes
1517 libc_cv_as_noexecstack=no
1520 if test $libc_cv_as_noexecstack = yes; then
1521 ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack"
1523 AC_SUBST(ASFLAGS_config)
1525 AC_CACHE_CHECK(for -z combreloc,
1526 libc_cv_z_combreloc, [dnl
1527 cat > conftest.c <<EOF
1528 extern int bar (int);
1530 int foo (void) { return bar (mumble); }
1532 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1533 -fPIC -shared -o conftest.so conftest.c
1534 -nostdlib -nostartfiles
1535 -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD])
1537 dnl The following test is a bit weak. We must use a tool which can test
1538 dnl cross-platform since the gcc used can be a cross compiler. Without
1539 dnl introducing new options this is not easily doable. Instead use a tool
1540 dnl which always is cross-platform: readelf. To detect whether -z combreloc
1541 dnl look for a section named .rel.dyn.
1542 if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
1543 libc_cv_z_combreloc=yes
1545 libc_cv_z_combreloc=no
1548 libc_cv_z_combreloc=no
1551 if test "$libc_cv_z_combreloc" = yes; then
1552 AC_DEFINE(HAVE_Z_COMBRELOC)
1554 AC_SUBST(libc_cv_z_combreloc)
1556 AC_CACHE_CHECK(for -z execstack,
1557 libc_cv_z_execstack, [dnl
1558 cat > conftest.c <<EOF
1559 int _start (void) { return 42; }
1561 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1562 -fPIC -shared -o conftest.so conftest.c
1563 -Wl,-z,execstack -nostdlib
1564 1>&AS_MESSAGE_LOG_FD])
1566 libc_cv_z_execstack=yes
1568 libc_cv_z_execstack=no
1571 AC_SUBST(libc_cv_z_execstack)
1573 AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl
1574 cat > conftest.c <<EOF
1576 main () { return 0;}
1578 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie
1579 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1587 AC_SUBST(libc_cv_fpie)
1590 AC_CACHE_CHECK(for -fno-toplevel-reorder, libc_cv_fno_toplevel_reorder, [dnl
1591 cat > conftest.c <<EOF
1594 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder
1595 conftest.c 1>&AS_MESSAGE_LOG_FD])
1597 libc_cv_fno_toplevel_reorder=yes
1599 libc_cv_fno_toplevel_reorder=no
1602 if test $libc_cv_fno_toplevel_reorder = yes; then
1603 fno_unit_at_a_time=-fno-toplevel-reorder
1605 fno_unit_at_a_time=-fno-unit-at-a-time
1607 AC_SUBST(fno_unit_at_a_time)
1609 AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
1610 cat > conftest.c <<EOF
1612 main () { return 0;}
1614 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fstack-protector
1615 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1622 AC_SUBST(libc_cv_ssp)
1624 if test $elf != yes; then
1625 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1626 [AC_TRY_COMPILE(, [asm (".section .init");
1627 asm (".section .fini");
1628 asm ("${libc_cv_dot_text}");],
1629 libc_cv_have_initfini=yes,
1630 libc_cv_have_initfini=no)])
1631 AC_SUBST(libc_cv_have_initfini)dnl
1632 if test $libc_cv_have_initfini = yes; then
1633 AC_DEFINE(HAVE_INITFINI)
1637 if test $elf = yes; then
1638 AC_CACHE_CHECK(whether cc puts quotes around section names,
1639 libc_cv_have_section_quotes,
1640 [cat > conftest.c <<EOF
1641 static const int foo
1642 __attribute__ ((section ("bar"))) = 1;
1644 if ${CC-cc} -S conftest.c -o conftest.s; then
1645 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1646 libc_cv_have_section_quotes=yes
1648 libc_cv_have_section_quotes=no
1651 libc_cv_have_section_quotes=unknown
1655 if test $libc_cv_have_section_quotes = yes; then
1656 AC_DEFINE(HAVE_SECTION_QUOTES)
1660 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1661 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1662 [cat > conftest.$ac_ext <<EOF
1663 dnl This sometimes fails to find confdefs.h, for some reason.
1664 dnl [#]line $LINENO "[$]0"
1665 [#]line $LINENO "configure"
1666 #include "confdefs.h"
1667 void underscore_test(void) {
1670 if AC_TRY_EVAL(ac_compile); then
1671 if grep _underscore_test conftest* >/dev/null; then
1672 ifelse([$1], , :, [rm -f conftest*
1675 ifelse([$2], , , [rm -f conftest*
1679 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
1680 cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
1681 ifelse([$2], , , [rm -f conftest*
1686 if test $elf = yes; then
1687 libc_cv_asm_underscores=no
1689 if test $ac_cv_prog_cc_works = yes; then
1690 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1691 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1692 libc_cv_asm_underscores=yes,
1693 libc_cv_asm_underscores=no)])
1695 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1696 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1697 libc_cv_asm_underscores=no)])
1700 if test $libc_cv_asm_underscores = no; then
1701 AC_DEFINE(NO_UNDERSCORES)
1704 if test $elf = yes; then
1705 libc_cv_weak_symbols=yes
1708 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1710 cat > conftest.s <<EOF
1712 ${libc_cv_asm_global_directive} foo
1715 .weak bar; bar = foo
1717 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1718 libc_cv_asm_weak_directive=yes
1720 libc_cv_asm_weak_directive=no
1724 if test $libc_cv_asm_weak_directive = no; then
1725 AC_CACHE_CHECK(for assembler .weakext directive,
1726 libc_cv_asm_weakext_directive,
1728 cat > conftest.s <<EOF
1730 ${libc_cv_asm_global_directive} foo
1734 ${libc_cv_asm_global_directive} baz
1737 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1738 libc_cv_asm_weakext_directive=yes
1740 libc_cv_asm_weakext_directive=no
1746 if test $libc_cv_asm_weak_directive = yes; then
1747 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1748 elif test $libc_cv_asm_weakext_directive = yes; then
1749 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1752 AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl
1754 sparc/sparc64*) cfi_offset=2047;;
1757 cat > conftest.s <<EOF
1759 .type func,%function
1763 .cfi_rel_offset 1, $cfi_offset
1766 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1767 libc_cv_asm_cfi_directives=yes
1769 libc_cv_asm_cfi_directives=no
1772 if test $libc_cv_asm_cfi_directives = yes; then
1773 AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES)
1776 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1777 cat > conftest.c <<\EOF
1782 dnl No \ in command here because it ends up inside ''.
1783 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1784 -nostdlib -nostartfiles -Wl,--no-whole-archive
1785 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1786 libc_cv_ld_no_whole_archive=yes
1788 libc_cv_ld_no_whole_archive=no
1791 if test $libc_cv_ld_no_whole_archive = yes; then
1792 no_whole_archive=-Wl,--no-whole-archive
1794 AC_SUBST(no_whole_archive)dnl
1796 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1797 cat > conftest.c <<\EOF
1802 dnl No \ in command here because it ends up inside ''.
1803 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1804 -nostdlib -nostartfiles -fexceptions
1805 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1806 libc_cv_gcc_exceptions=yes
1808 libc_cv_gcc_exceptions=no
1811 if test $libc_cv_gcc_exceptions = yes; then
1812 exceptions=-fexceptions
1814 AC_SUBST(exceptions)dnl
1816 if test "$host_cpu" = powerpc ; then
1817 # Check for a bug present in at least versions 2.8.x of GCC
1818 # and versions 1.0.x of EGCS.
1819 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1820 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1821 libc_cv_c_asmcr0_bug='no',
1822 libc_cv_c_asmcr0_bug='yes')])
1823 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1824 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1828 dnl Check whether compiler understands __builtin_expect.
1829 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1830 [cat > conftest.c <<EOF
1831 #line $LINENO "configure"
1834 a = __builtin_expect (a, 10);
1835 return a == 10 ? 0 : 1;
1838 dnl No \ in command here because it ends up inside ''.
1839 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles
1840 -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then
1841 libc_cv_gcc_builtin_expect=yes
1843 libc_cv_gcc_builtin_expect=no
1846 if test "$libc_cv_gcc_builtin_expect" = yes; then
1847 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1850 AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
1851 cat > conftest.c <<\EOF
1854 __builtin_memset (x, 0, 1000);
1858 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]);
1860 libc_cv_gcc_builtin_memset=no
1862 libc_cv_gcc_builtin_memset=yes
1865 if test "$libc_cv_gcc_builtin_memset" = yes ; then
1866 AC_DEFINE(HAVE_BUILTIN_MEMSET)
1869 AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl
1870 cat > conftest.c <<\EOF
1871 extern char *strstr (const char *, const char *) __asm ("my_strstr");
1872 char *foo (const char *a, const char *b)
1874 return __builtin_strstr (a, b);
1878 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]);
1880 libc_cv_gcc_builtin_redirection=yes
1882 libc_cv_gcc_builtin_redirection=no
1885 if test "$libc_cv_gcc_builtin_redirection" = yes ; then
1886 AC_DEFINE(HAVE_BUILTIN_REDIRECTION)
1889 dnl Check whether the compiler supports the __thread keyword.
1890 if test "x$use__thread" != xno; then
1891 AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
1892 [cat > conftest.c <<\EOF
1893 __thread int a = 42;
1895 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then
1896 libc_cv_gcc___thread=yes
1898 libc_cv_gcc___thread=no
1901 if test "$libc_cv_gcc___thread" = yes; then
1902 AC_DEFINE(HAVE___THREAD)
1905 libc_cv_gcc___thread=no
1908 if test "$libc_cv_gcc___thread" = yes; then
1909 dnl Check whether the compiler supports the tls_model attribute.
1910 AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl
1911 cat > conftest.c <<\EOF
1912 extern __thread int a __attribute__((tls_model ("initial-exec")));
1914 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then
1915 libc_cv_gcc_tls_model_attr=yes
1917 libc_cv_gcc_tls_model_attr=no
1920 if test "$libc_cv_gcc_tls_model_attr" = yes; then
1921 AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE)
1925 dnl Check whether we have the gd library available.
1926 AC_MSG_CHECKING(for libgd)
1927 if test "$with_gd" != "no"; then
1928 old_CFLAGS="$CFLAGS"
1929 CFLAGS="$CFLAGS $libgd_include"
1930 old_LDFLAGS="$LDFLAGS"
1931 LDFLAGS="$LDFLAGS $libgd_ldflags"
1933 LIBS="$LIBS -lgd -lpng -lz -lm"
1934 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1935 CFLAGS="$old_CFLAGS"
1936 LDFLAGS="$old_LDFLAGS"
1941 AC_MSG_RESULT($LIBGD)
1945 if test x$with_selinux = xno ; then
1948 # See if we have the SELinux library
1949 AC_CHECK_LIB(selinux, is_selinux_enabled,
1950 have_selinux=yes, have_selinux=no)
1951 # See if we have the SELinux header with the NSCD permissions in it.
1952 if test x$have_selinux = xyes ; then
1953 AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h])
1954 AC_TRY_COMPILE([#include <selinux/av_permissions.h>],
1955 [#ifdef NSCD__SHMEMHOST
1958 #error NSCD__SHMEMHOST not defined
1960 have_selinux=yes, have_selinux=no)
1961 AC_MSG_RESULT($have_selinux)
1964 if test x$with_selinux = xyes ; then
1965 if test x$have_selinux = xno ; then
1966 AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found])
1970 # Check if we're building with SELinux support.
1971 if test "x$have_selinux" = xyes; then
1972 AC_DEFINE(HAVE_SELINUX, 1, [SELinux support])
1974 # See if we have the libaudit library
1975 AC_CHECK_LIB(audit, audit_log_user_avc_message,
1976 have_libaudit=yes, have_libaudit=no)
1977 if test "x$have_libaudit" = xyes; then
1978 AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support])
1980 AC_SUBST(have_libaudit)
1982 AC_SUBST(have_selinux)
1984 dnl check for the size of 'long double'.
1985 AC_CHECK_SIZEOF(long double, 0)
1986 sizeof_long_double=$ac_cv_sizeof_long_double
1987 AC_SUBST(sizeof_long_double)
1989 ### End of automated tests.
1990 ### Now run sysdeps configure fragments.
1992 # They also can set these variables.
1994 ldd_rewrite_script=no
1995 libc_cv_sysconfdir=$sysconfdir
1996 libc_cv_gcc_unwind_find_fde=no
1999 # Iterate over all the sysdep directories we will use, running their
2000 # configure fragments, and looking for a uname implementation.
2002 for dir in $sysnames; do
2005 *) dest=$srcdir/$dir ;;
2007 if test -r $dest/configure; then
2008 AC_MSG_RESULT(running configure fragment for $dir)
2012 if test -z "$uname"; then
2013 if test -r $dest/uname.c ||
2014 test -r $dest/uname.S ||
2015 { test -r $dest/syscalls.list &&
2016 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
2023 if test x$libc_cv_gcc_unwind_find_fde = xyes; then
2024 AC_DEFINE(EXPORT_UNWIND_FIND_FDE)
2026 AC_SUBST(libc_cv_gcc_unwind_find_fde)
2028 # If we will use the generic uname implementation, we must figure out what
2029 # it will say by examining the system, and write the results in config-name.h.
2030 if test "$uname" = "sysdeps/generic"; then
2033 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
2035 if test $uname_sysname != $config_os; then
2036 config_release=`echo $config_os | sed s/$uname_sysname//`
2039 AC_DEFUN(LIBC_KERNEL_ID, [dnl
2040 if test -r /vmunix; then
2041 kernel_id=`strings /vmunix | grep UNIX`
2042 elif test -r /dynix; then
2043 kernel_id=`strings /dynix | grep DYNIX`
2049 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
2052 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
2054 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
2055 != x$config_release; then
2056 # The configuration release is a substring of the kernel release.
2057 libc_cv_uname_release=$kernel_release
2058 elif test x$config_release != x; then
2059 libc_cv_uname_release=$config_release
2060 elif test x$kernel_release != x; then
2061 libc_cv_uname_release=$kernel_release
2063 libc_cv_uname_release=unknown
2065 uname_release="$libc_cv_uname_release"
2067 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
2070 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
2072 if test -n "$kernel_version"; then
2073 libc_cv_uname_version="$kernel_version"
2075 libc_cv_uname_version=unknown
2077 uname_version="$libc_cv_uname_version"
2079 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
2080 config_uname=config-name.h:config-name.in
2082 # For non-generic uname, we don't need to create config-name.h at all.
2086 dnl This is tested by existing code and it's simpler to avoid changing it.
2087 AC_DEFINE(USE_IN_LIBIO)
2089 # Test for old glibc 2.0.x headers so that they can be removed properly
2090 # Search only in includedir.
2091 AC_MSG_CHECKING(for old glibc 2.0.x headers)
2092 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
2094 old_glibc_headers=yes
2096 old_glibc_headers=no
2098 AC_MSG_RESULT($old_glibc_headers)
2099 if test ${old_glibc_headers} = yes; then
2100 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
2101 AC_MSG_WARN(*** be removed.)
2103 AC_SUBST(old_glibc_headers)
2105 AC_SUBST(libc_cv_slibdir)
2106 AC_SUBST(libc_cv_localedir)
2107 AC_SUBST(libc_cv_sysconfdir)
2108 AC_SUBST(libc_cv_rootsbindir)
2109 AC_SUBST(libc_cv_forced_unwind)
2111 AC_SUBST(use_ldconfig)
2112 AC_SUBST(ldd_rewrite_script)
2114 AC_SUBST(elf) AC_SUBST(xcoff)
2115 if test $elf = yes; then
2118 if test $xcoff = yes; then
2119 AC_DEFINE(HAVE_XCOFF)
2124 if test $shared = default; then
2128 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
2130 cat > conftest.c <<EOF
2131 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
2132 # error PIC is default.
2135 if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
2139 AC_SUBST(pic_default)
2144 AC_SUBST(static_nss)
2145 AC_SUBST(nopic_initfini)
2149 dnl See sysdeps/mach/configure.in for this variable.
2150 AC_SUBST(mach_interface_list)
2152 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
2155 config_makefile=Makefile
2158 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
2159 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
2163 AC_CONFIG_FILES([config.make ${config_makefile} ${config_uname}])
2164 AC_CONFIG_COMMANDS([default],[[
2165 case $CONFIG_FILES in *config.make*)
2166 echo "$config_vars" >> config.make;;
2168 test -d bits || mkdir bits]],[[config_vars='$config_vars']])