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=$enableval],
127 AC_ARG_ENABLE([shared],
128 AC_HELP_STRING([--enable-shared],
129 [build shared library @<:@default=yes if GNU ld & ELF@:>@]),
132 AC_ARG_ENABLE([profile],
133 AC_HELP_STRING([--enable-profile],
134 [build profiled library @<:@default=no@:>@]),
135 [profile=$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 $config_os | sed 's/^unknown-//'`"
281 # Some configurations imply other options.
283 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
284 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
286 gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6* | kopensolaris*-gnu* )
287 # These systems (almost) always use the ELF format.
291 # These systems are always xcoff
297 # The configure fragment of an add-on port can modify these to supplement
298 # or override the table in the case statement below. No fragment should
299 # ever change the config_* variables, however.
300 machine=$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-$host_os" in
466 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.* | kopensolaris*-gnu* )
469 echo "*** The GNU C library is currently not available for this platform."
470 echo "*** So far nobody cared to port it and if there is no volunteer it"
471 echo "*** might never happen. So, if you have interest to see glibc on"
472 echo "*** this platform visit"
473 echo "*** http://www.gnu.org/software/libc/porting.html"
474 echo "*** and join the group of porters"
480 dnl We need to use [ and ] for other purposes for a while now.
482 # Expand the configuration machine name into a subdirectory by architecture
483 # type and particular chip. If an add-on configure fragment already set
484 # base_machine, we don't change it.
485 test -n "$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/sparc32/sparcv9/sparcv9v ;;
511 base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;;
513 base_machine=sparc machine=sparc/sparc64 ;;
515 base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
517 base_machine=sparc machine=sparc/sparc64/sparcv9v ;;
519 base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;;
520 *) base_machine=$machine ;;
523 AC_SUBST(base_machine)
525 if test "$base_machine" = "i386"; then
526 AC_DEFINE(USE_REGPARMS)
529 # Compute the list of sysdep directories for this configuration.
530 # This can take a while to compute.
531 sysdep_dir=$srcdir/sysdeps
532 AC_MSG_CHECKING(sysdep dirs)
533 dnl We need to use [ and ] for other purposes for a while now.
535 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
536 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
541 netbsd* | 386bsd* | freebsd* | bsdi*)
542 base_os=unix/bsd/bsd4.4 ;;
543 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
545 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
548 base_os=unix/sysv/irix6/$os ;;
550 base_os=unix/sysv/sysv4 ;;
552 base_os=unix/sysv/hpux/$os ;;
554 base_os=unix/sysv/aix/aix4.3 ;;
556 base_os=unix/sysv/solaris2/kopensolaris-gnu ;;
558 base_os=standalone ;;
563 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
566 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
570 o=`echo $tail | sed 's/[0-9]*$//'`
571 if test $o != $tail; then
574 # For linux-gnu, try linux-gnu, then linux.
575 o=`echo $tail | sed 's/-.*$//'`
576 if test $o != $tail; then
580 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
583 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
589 # For sparc/sparc32, try sparc/sparc32 and then sparc.
591 tail=$machine${submachine:+/$submachine}
592 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
594 # Prepend the machine's FPU directory unless --without-fp.
595 if test "$with_fp" = yes; then
598 mach="$mach /$1/nofpu"
604 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
607 # Find what sysdep directories exist.
610 for b in $base ''; do
611 for m0 in $mach ''; do
612 for v in /$vendor ''; do
613 test "$v" = / && continue
614 for o in /$ostry ''; do
615 test "$o" = / && continue
616 for m in $mach ''; do
617 for d in $add_ons_pfx ''; do
618 for a in $add_ons_sfx ''; do
619 if test -n "$m0$m0sub$b$v$o$m$msub"; then
620 try_srcdir="${srcdir}/"
624 try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a"
625 test -n "$enable_debug_configure" &&
626 echo "$0 [DEBUG]: try $try" >&2
627 if test -d "$try_srcdir$try"; then
628 sysnames="$sysnames $try"
629 { test -n "$o" || test -n "$b"; } && os_used=t
630 { test -n "$m" || test -n "$m0"; } && machine_used=t
632 x*/$submachine) submachine_used=t ;;
634 if test -n "$d"; then
635 case "$sysnames_add_ons" in
637 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
650 if test -z "$os_used" && test "$os" != none; then
651 AC_MSG_ERROR(Operating system $os is not supported.)
653 if test -z "$machine_used" && test "$machine" != none; then
654 AC_MSG_ERROR(The $machine is not supported.)
656 if test -z "$submachine_used" && test -n "$submachine"; then
657 AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.)
661 # We have now validated the configuration.
664 # If using ELF, look for an `elf' subdirectory of each machine directory.
665 # We prepend these rather than inserting them whereever the machine appears
666 # because things specified by the machine's ELF ABI should override
667 # OS-specific things, and should always be the same for any OS on the
668 # machine (otherwise what's the point of an ABI?).
669 if test "$elf" = yes; then
671 for d in $add_ons_pfx ''; do
673 if test -d $srcdir/${d}sysdeps$m/elf; then
674 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
678 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
682 # Expand the list of system names into a full list of directories
683 # from each element's parent name and Implies file (if present).
686 while test $# -gt 0; do
690 case " $names " in *" $name "*)
691 # Already in the list.
695 # Report each name as we discover it, so there is no long pause in output.
696 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
698 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
702 *) xsrcdir=$srcdir/ ;;
704 test -n "$enable_debug_configure" &&
705 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
707 if test -f $xsrcdir$name/Implies; then
708 # Collect more names from the `Implies' file (removing comments).
709 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
711 for x in $implied_candidate; do
713 if test -d $xsrcdir$name_base/$x; then
714 implied="$implied $name_base/$x";
717 for d in $add_ons_pfx ''; do
721 *) try_srcdir=$srcdir/ ;;
723 test -n "$enable_debug_configure" &&
724 echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2
725 if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
727 implied="$implied $try"
729 case "$sysnames_add_ons" in
731 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
735 if test $found = no; then
736 AC_MSG_WARN($name/Implies specifies nonexistent $x)
743 # Add NAME to the list of names.
746 # Find the parent of NAME, using the empty string if it has none.
748 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
751 # Add the names implied by NAME, and NAME's parent (if it has one), to
752 # the list of names to be processed (the argument list). We prepend the
753 # implied names to the list and append the parent. We want implied
754 # directories to come before further directories inferred from the
755 # configuration components; this ensures that for sysv4, unix/common
756 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
758 sysnames="`echo $implied $* $parent`"
759 test -n "$sysnames" && set $sysnames
762 # Add the default directories.
763 default_sysnames=sysdeps/generic
764 if test "$elf" = yes; then
765 default_sysnames="sysdeps/generic/elf $default_sysnames"
767 sysnames="$names $default_sysnames"
769 # The other names were emitted during the scan.
770 AC_MSG_RESULT($default_sysnames)
772 # Collect the list of add-ons that supply partial sysdeps trees.
774 for add_on in $add_ons; do
777 *) xsrcdir="$srcdir/" ;;
780 test -d "$xsrcdir$add_on/sysdeps" || {
781 case "$configured_add_ons " in
784 AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree)
790 sysdeps_add_ons="$sysdeps_add_ons $add_on"
791 case "$sysnames_add_ons" in
794 AC_MSG_WARN(add-on $add_on contributed no sysdeps directories)
799 for d in $sysnames; do
801 $add_on/sysdeps/*) ;;
804 (cd "$xsrcdir$d" && for f in *[[!~]]; do
808 test -d "$ff" || { test -e "$ff" && exit 88; }
812 test -d "$f" || { test -e "$f" && exit 88; }
816 if test $? -eq 88; then
821 if test $found = no; then
822 AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories)
825 AC_SUBST(sysdeps_add_ons)
831 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
832 # The makefiles need to use a different form to find it in $srcdir.
833 INSTALL='\$(..)./scripts/install-sh -c'
838 if test $host != $build; then
839 AC_CHECK_PROGS(BUILD_CC, gcc cc)
841 AC_SUBST(cross_compiling)
843 # We need the C++ compiler only for testing.
846 AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in
848 # Accept binutils 2.13 or newer.
849 AC_CHECK_PROG_VER(AS, $AS, --version,
850 [GNU assembler.* \([0-9]*\.[0-9.]*\)],
851 [2.1[3-9]*], AS=: critic_missing="$critic_missing as")
852 AC_CHECK_PROG_VER(LD, $LD, --version,
853 [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
854 [2.1[3-9]*], LD=: critic_missing="$critic_missing ld")
856 # We need the physical current working directory. We cannot use the
857 # "pwd -P" shell builtin since that's not portable. Instead we try to
858 # find a pwd binary. Note that assigning to the PWD environment
859 # variable might have some interesting side effects, so we don't do
861 AC_PATH_PROG(PWD_P, pwd, no)
862 if test "$PWD_P" = no; then
863 AC_MSG_ERROR(*** A pwd binary could not be found.)
866 # These programs are version sensitive.
868 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
869 [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ],
870 critic_missing="$critic_missing gcc")
871 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
872 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
873 [3.79* | 3.[89]*], critic_missing="$critic_missing make")
875 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
876 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
877 [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*],
878 MSGFMT=: aux_missing="$aux_missing msgfmt")
879 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
880 [GNU texinfo.* \([0-9][0-9.]*\)],
882 MAKEINFO=: aux_missing="$aux_missing makeinfo")
883 AC_CHECK_PROG_VER(SED, sed, --version,
884 [GNU sed version \([0-9]*\.[0-9.]*\)],
885 [3.0[2-9]*|3.[1-9]*|[4-9]*],
886 SED=: aux_missing="$aux_missing sed")
888 AC_CHECK_PROGS(AUTOCONF, autoconf, no)
890 xno|x|x:) AUTOCONF=no ;;
893 whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl
894 if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then
895 libc_cv_autoconf_works=yes
897 libc_cv_autoconf_works=no
899 test $libc_cv_autoconf_works = yes || AUTOCONF=no
902 if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then
903 # If --without-cvs they probably won't change configure.in, so no complaints.
904 aux_missing="$aux_missing autoconf"
907 test -n "$critic_missing" && AC_MSG_ERROR([
908 *** These critical programs are missing or too old:$critic_missing
909 *** Check the INSTALL file for required versions.])
911 test -n "$aux_missing" && AC_MSG_WARN([
912 *** These auxiliary programs are missing or incompatible versions:$aux_missing
913 *** some features will be disabled.
914 *** Check the INSTALL file for required versions.])
916 # if using special system headers, find out the compiler's sekrit
917 # header directory and add that to the list. NOTE: Only does the right
918 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
919 if test -n "$sysheaders"; then
920 ccheaders=`$CC -print-file-name=include`
921 SYSINCLUDES="-nostdinc -isystem $ccheaders \
922 -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"
923 if test -n "$CXX"; then
924 cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` &&
925 cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` &&
926 cxxheaders=`$CXX -print-file-name=../../../../include/c++/`"$cxxversion" &&
927 CXX_SYSINCLUDES="-isystem $cxxheaders \
928 -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward"
931 AC_SUBST(SYSINCLUDES)
932 AC_SUBST(CXX_SYSINCLUDES)
934 # check if ranlib is necessary
935 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
936 cat > conftest.c <<EOF
941 $CC $CFLAGS $CPPFLAGS -c conftest.c
942 $AR cr conftest.a conftest.o
943 cp conftest.a conftest2.a
945 if cmp -s conftest.a conftest2.a; then
946 libc_cv_ranlib_necessary=no
948 libc_cv_ranlib_necessary=yes
951 if test "$libc_cv_ranlib_necessary" = no; then
955 # Test if LD_LIBRARY_PATH contains the notation for the current directory
956 # since this would lead to problems installing/building glibc.
957 # LD_LIBRARY_PATH contains the current directory if one of the following
959 # - one of the terminals (":" and ";") is the first or last sign
960 # - two terminals occur directly after each other
961 # - the path contains an element with a dot in it
962 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
964 case ${LD_LIBRARY_PATH} in
965 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
966 ld_library_path_setting="contains current directory"
969 ld_library_path_setting="ok"
973 AC_MSG_RESULT($ld_library_path_setting)
974 if test "$ld_library_path_setting" != "ok"; then
976 *** LD_LIBRARY_PATH shouldn't contain the current directory when
977 *** building glibc. Please change the environment variable
978 *** and run configure again.])
981 AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl
982 if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then
983 libc_cv_gcc_static_libgcc=
985 libc_cv_gcc_static_libgcc=-static-libgcc
987 AC_SUBST(libc_cv_gcc_static_libgcc)
989 AC_PATH_PROG(BASH_SHELL, bash, no)
990 if test "$BASH_SHELL" != no &&
991 $BASH_SHELL -c 'test "$BASH_VERSINFO" \
992 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
993 libc_cv_have_bash2=yes
995 libc_cv_have_bash2=no
997 AC_SUBST(libc_cv_have_bash2)
999 dnl We need a ksh compatible shell for tzselect.
1000 if test "$BASH_SHELL" = no; then
1001 AC_PATH_PROG(KSH, ksh, no)
1002 if test "$KSH" = no; then
1005 libc_cv_have_ksh=yes
1010 libc_cv_have_ksh=yes
1012 AC_SUBST(libc_cv_have_ksh)
1015 AC_PATH_PROG(PERL, perl, no)
1016 if test "$PERL" != no &&
1017 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
1020 AC_PATH_PROG(INSTALL_INFO, install-info, no,
1021 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
1022 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
1024 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
1025 echo '#include <stddef.h>
1026 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
1027 if eval "$ac_cpp conftest.c 2>/dev/null" \
1028 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
1029 libc_cv_signed_size_t=no
1031 libc_cv_signed_size_t=yes
1034 if test $libc_cv_signed_size_t = yes; then
1035 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
1036 cat >> confdefs.h <<\EOF
1037 #undef __SIZE_TYPE__
1038 #define __SIZE_TYPE__ unsigned
1042 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
1044 [#define __need_size_t
1045 #define __need_wchar_t
1048 #include <stddef.h>], [size_t size; wchar_t wchar;
1050 #error stddef.h ignored __need_*
1052 if (&size == NULL || &wchar == NULL) abort ();],
1053 libc_cv_friendly_stddef=yes,
1054 libc_cv_friendly_stddef=no)])
1055 if test $libc_cv_friendly_stddef = yes; then
1056 config_vars="$config_vars
1057 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
1060 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
1061 libc_cv_need_minus_P, [dnl
1062 cat > conftest.S <<EOF
1063 #include "confdefs.h"
1064 /* Nothing whatsoever. */
1066 if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then
1067 libc_cv_need_minus_P=no
1069 libc_cv_need_minus_P=yes
1072 if test $libc_cv_need_minus_P = yes; then
1073 config_vars="$config_vars
1074 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
1077 AC_MSG_CHECKING(whether .text pseudo-op must be used)
1078 AC_CACHE_VAL(libc_cv_dot_text, [dnl
1079 cat > conftest.s <<EOF
1083 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1084 libc_cv_dot_text=.text
1087 if test -z "$libc_cv_dot_text"; then
1093 AC_CACHE_CHECK(for assembler global-symbol directive,
1094 libc_cv_asm_global_directive, [dnl
1095 libc_cv_asm_global_directive=UNKNOWN
1096 for ac_globl in .globl .global .EXPORT; do
1097 cat > conftest.s <<EOF
1102 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1103 libc_cv_asm_global_directive=${ac_globl}
1106 test $libc_cv_asm_global_directive != UNKNOWN && break
1108 if test $libc_cv_asm_global_directive = UNKNOWN; then
1109 AC_MSG_ERROR(cannot determine asm global directive)
1111 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
1114 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
1115 cat > conftest.s <<EOF
1118 .set glibc_conftest_frobozz,foo
1119 $libc_cv_asm_global_directive glibc_conftest_frobozz
1121 # The alpha-dec-osf1 assembler gives only a warning for `.set'
1122 # (but it doesn't work), so we must do a linking check to be sure.
1123 cat > conftest1.c <<\EOF
1124 extern int glibc_conftest_frobozz;
1125 void _start() { glibc_conftest_frobozz = 1; }
1127 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1128 -nostartfiles -nostdlib \
1129 -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1130 libc_cv_asm_set_directive=yes
1132 libc_cv_asm_set_directive=no
1135 if test $libc_cv_asm_set_directive = yes; then
1136 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
1139 AC_CACHE_CHECK(for assembler .type directive prefix,
1140 libc_cv_asm_type_prefix, [dnl
1141 libc_cv_asm_type_prefix=no
1142 for ac_try_prefix in '@' '%' '#'; do
1143 cat > conftest.s <<EOF
1145 ${libc_cv_asm_global_directive} foo
1146 .type foo, ${ac_try_prefix}object
1151 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1152 libc_cv_asm_type_prefix=${ac_try_prefix}
1155 test "x$libc_cv_asm_type_prefix" != xno && break
1157 if test "x$libc_cv_asm_type_prefix" != xno; then
1158 AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix})
1161 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
1162 [cat > conftest.s <<EOF
1165 .symver _sym,sym@VERS
1167 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1168 libc_cv_asm_symver_directive=yes
1170 libc_cv_asm_symver_directive=no
1173 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
1174 if test $libc_cv_asm_symver_directive = yes; then
1175 cat > conftest.s <<EOF
1178 .symver _sym,sym@VERS
1180 cat > conftest.map <<EOF
1189 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1190 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared
1191 -o conftest.so conftest.o
1192 -nostartfiles -nostdlib
1193 -Wl,--version-script,conftest.map
1194 1>&AS_MESSAGE_LOG_FD]);
1196 libc_cv_ld_version_script_option=yes
1198 libc_cv_ld_version_script_option=no
1201 libc_cv_ld_version_script_option=no
1204 libc_cv_ld_version_script_option=no
1207 if test $shared != no &&
1208 test $libc_cv_asm_symver_directive = yes &&
1209 test $libc_cv_ld_version_script_option = yes &&
1210 test $enable_versioning = yes; then
1212 AC_DEFINE(DO_VERSIONING)
1216 AC_SUBST(VERSIONING)
1218 if test $elf = yes && test $shared != no && test $VERSIONING = no; then
1220 *** WARNING: You should not compile GNU libc without versioning. Not using
1221 *** versioning will introduce incompatibilities so that old binaries
1222 *** will not run anymore.
1223 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
1225 if test $elf = yes; then
1226 AC_CACHE_CHECK(for .previous assembler directive,
1227 libc_cv_asm_previous_directive, [dnl
1228 cat > conftest.s <<EOF
1229 .section foo_section
1232 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1233 libc_cv_asm_previous_directive=yes
1235 libc_cv_asm_previous_directive=no
1238 if test $libc_cv_asm_previous_directive = yes; then
1239 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
1241 AC_CACHE_CHECK(for .popsection assembler directive,
1242 libc_cv_asm_popsection_directive, [dnl
1243 cat > conftest.s <<EOF
1244 .pushsection foo_section
1247 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1248 libc_cv_asm_popsection_directive=yes
1250 libc_cv_asm_popsection_directive=no
1253 if test $libc_cv_asm_popsection_directive = yes; then
1254 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
1257 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
1258 libc_cv_asm_protected_directive, [dnl
1259 cat > conftest.s <<EOF
1265 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1266 libc_cv_asm_protected_directive=yes
1268 AC_MSG_ERROR(assembler support for symbol visibility is required)
1272 if test $libc_cv_asm_protected_directive = yes; then
1273 AC_CACHE_CHECK(whether __attribute__((visibility())) is supported,
1274 libc_cv_visibility_attribute,
1275 [cat > conftest.c <<EOF
1276 int foo __attribute__ ((visibility ("hidden"))) = 1;
1277 int bar __attribute__ ((visibility ("protected"))) = 1;
1279 libc_cv_visibility_attribute=no
1280 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1281 if grep '\.hidden.*foo' conftest.s >/dev/null; then
1282 if grep '\.protected.*bar' conftest.s >/dev/null; then
1283 libc_cv_visibility_attribute=yes
1289 if test $libc_cv_visibility_attribute != yes; then
1290 AC_MSG_ERROR(compiler support for visibility attribute is required)
1294 if test $libc_cv_visibility_attribute = yes; then
1295 AC_CACHE_CHECK(for broken __attribute__((visibility())),
1296 libc_cv_broken_visibility_attribute,
1297 [cat > conftest.c <<EOF
1299 int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden")));
1300 int bar (int x) { return x; }
1302 libc_cv_broken_visibility_attribute=yes
1303 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then
1305 if grep '\.hidden[ _]foo' conftest.s >/dev/null; then
1307 libc_cv_broken_visibility_attribute=no
1310 rm -f conftest.c conftest.s
1312 if test $libc_cv_broken_visibility_attribute = yes; then
1313 AC_MSG_ERROR(working compiler support for visibility attribute is required)
1317 AC_CACHE_CHECK(for broken __attribute__((alias())),
1318 libc_cv_broken_alias_attribute,
1319 [cat > conftest.c <<EOF
1320 extern int foo (int x) __asm ("xyzzy");
1321 int bar (int x) { return x; }
1322 extern __typeof (bar) foo __attribute ((weak, alias ("bar")));
1324 extern __typeof (dfoo) dfoo __asm ("abccb");
1327 libc_cv_broken_alias_attribute=yes
1328 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1329 if grep 'xyzzy' conftest.s >/dev/null &&
1330 grep 'abccb' conftest.s >/dev/null; then
1331 libc_cv_broken_alias_attribute=no
1334 rm -f conftest.c conftest.s
1336 if test $libc_cv_broken_alias_attribute = yes; then
1337 AC_MSG_ERROR(working alias attribute support required)
1340 if test $libc_cv_visibility_attribute = yes; then
1341 AC_CACHE_CHECK(whether to put _rtld_local into .sdata section,
1342 libc_cv_have_sdata_section,
1343 [echo "int i;" > conftest.c
1344 libc_cv_have_sdata_section=no
1345 if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
1346 | grep '\.sdata' >/dev/null; then
1347 libc_cv_have_sdata_section=yes
1349 rm -f conftest.c conftest.so
1351 if test $libc_cv_have_sdata_section = yes; then
1352 AC_DEFINE(HAVE_SDATA_SECTION)
1356 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
1357 libc_cv_initfini_array, [dnl
1358 cat > conftest.c <<EOF
1359 int _start (void) { return 0; }
1360 int __start (void) { return 0; }
1361 int foo (void) { return 1; }
1362 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
1364 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
1365 -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
1367 if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then
1368 libc_cv_initfini_array=yes
1370 libc_cv_initfini_array=no
1373 libc_cv_initfini_array=no
1376 if test $libc_cv_initfini_array != yes; then
1377 AC_MSG_ERROR([Need linker with .init_array/.fini_array support.])
1380 AC_CACHE_CHECK(for libunwind-support in compiler,
1381 libc_cv_cc_with_libunwind, [
1382 cat > conftest.c <<EOF
1383 int main (void) { return 0; }
1385 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \
1386 conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then
1387 libc_cv_cc_with_libunwind=yes
1389 libc_cv_cc_with_libunwind=no
1392 AC_SUBST(libc_cv_cc_with_libunwind)
1393 if test $libc_cv_cc_with_libunwind = yes; then
1394 AC_DEFINE(HAVE_CC_WITH_LIBUNWIND)
1397 AC_CACHE_CHECK(for -z nodelete option,
1398 libc_cv_z_nodelete, [dnl
1399 cat > conftest.c <<EOF
1400 int _start (void) { return 42; }
1402 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1403 -fPIC -shared -o conftest.so conftest.c
1404 -nostartfiles -nostdlib
1405 -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD])
1407 libc_cv_z_nodelete=yes
1409 AC_MSG_ERROR(linker with -z nodelete support required)
1413 AC_CACHE_CHECK(for -z nodlopen option,
1414 libc_cv_z_nodlopen, [dnl
1415 cat > conftest.c <<EOF
1416 int _start (void) { return 42; }
1418 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1419 -fPIC -shared -o conftest.so conftest.c
1420 -nostartfiles -nostdlib
1421 -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD])
1423 libc_cv_z_nodlopen=yes
1425 AC_MSG_ERROR(linker with -z nodlopen support required)
1429 AC_CACHE_CHECK(for -z initfirst option,
1430 libc_cv_z_initfirst, [dnl
1431 cat > conftest.c <<EOF
1432 int _start (void) { return 42; }
1434 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1435 -fPIC -shared -o conftest.so conftest.c
1436 -nostartfiles -nostdlib
1437 -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD])
1439 libc_cv_z_initfirst=yes
1441 AC_MSG_ERROR(linker with -z initfirst support required)
1445 case "$base_machine" in
1447 i[34567]86 | x86_64 | powerpc* | s390* | sparc* | alpha*)
1449 AC_CACHE_CHECK(for -z relro option,
1450 libc_cv_z_relro, [dnl
1452 if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD])
1454 if AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep DATA_SEGMENT_RELRO_END 1>&AS_MESSAGE_LOG_FD])
1459 if test "$libc_cv_z_relro" = no; then
1460 AC_MSG_ERROR(linker with -z relro support required)
1466 AC_CACHE_CHECK(for -Bgroup option,
1467 libc_cv_Bgroup, [dnl
1468 cat > conftest.c <<EOF
1469 int _start (void) { return 42; }
1471 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1472 -fPIC -shared -o conftest.so conftest.c
1473 -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD])
1480 AC_SUBST(libc_cv_Bgroup)
1482 AC_CACHE_CHECK(for libgcc_s suffix,
1483 libc_cv_libgcc_s_suffix, [dnl
1484 cat > conftest.c <<EOF
1485 int main (void) { return 0; }
1488 libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1489 -fPIC -shared -shared-libgcc -o conftest.so \
1490 conftest.c -v 2>&1 >/dev/null \
1491 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
1494 AC_SUBST(libc_cv_libgcc_s_suffix)
1496 AC_CACHE_CHECK(for --as-needed option,
1497 libc_cv_as_needed, [dnl
1498 cat > conftest.c <<EOF
1499 int main (void) { return 0; }
1501 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1502 -fPIC -shared -o conftest.so conftest.c
1503 -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed
1504 -nostdlib 1>&AS_MESSAGE_LOG_FD])
1506 libc_cv_as_needed=yes
1508 libc_cv_as_needed=no
1511 AC_SUBST(libc_cv_as_needed)
1514 AC_CACHE_CHECK(whether --noexecstack is desirable for .S files,
1515 libc_cv_as_noexecstack, [dnl
1516 cat > conftest.c <<EOF
1519 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS
1520 -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \
1521 && grep -q .note.GNU-stack conftest.s \
1522 && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wa,--noexecstack
1523 -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD])
1525 libc_cv_as_noexecstack=yes
1527 libc_cv_as_noexecstack=no
1530 if test $libc_cv_as_noexecstack = yes; then
1531 ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack"
1533 AC_SUBST(ASFLAGS_config)
1535 AC_CACHE_CHECK(for -z combreloc,
1536 libc_cv_z_combreloc, [dnl
1537 cat > conftest.c <<EOF
1538 extern int bar (int);
1540 int foo (void) { return bar (mumble); }
1542 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1543 -fPIC -shared -o conftest.so conftest.c
1544 -nostdlib -nostartfiles
1545 -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD])
1547 dnl The following test is a bit weak. We must use a tool which can test
1548 dnl cross-platform since the gcc used can be a cross compiler. Without
1549 dnl introducing new options this is not easily doable. Instead use a tool
1550 dnl which always is cross-platform: readelf. To detect whether -z combreloc
1551 dnl look for a section named .rel.dyn.
1552 if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
1553 libc_cv_z_combreloc=yes
1555 libc_cv_z_combreloc=no
1558 libc_cv_z_combreloc=no
1561 if test "$libc_cv_z_combreloc" = yes; then
1562 AC_DEFINE(HAVE_Z_COMBRELOC)
1564 AC_SUBST(libc_cv_z_combreloc)
1566 AC_CACHE_CHECK(for -z execstack,
1567 libc_cv_z_execstack, [dnl
1568 cat > conftest.c <<EOF
1569 int _start (void) { return 42; }
1571 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1572 -fPIC -shared -o conftest.so conftest.c
1573 -Wl,-z,execstack -nostdlib
1574 1>&AS_MESSAGE_LOG_FD])
1576 libc_cv_z_execstack=yes
1578 libc_cv_z_execstack=no
1581 AC_SUBST(libc_cv_z_execstack)
1583 AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl
1584 cat > conftest.c <<EOF
1586 main () { return 0;}
1588 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie
1589 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1597 AC_SUBST(libc_cv_fpie)
1599 AC_CACHE_CHECK(for --hash-style option,
1600 libc_cv_hashstyle, [dnl
1601 cat > conftest.c <<EOF
1602 int _start (void) { return 42; }
1604 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1605 -fPIC -shared -o conftest.so conftest.c
1606 -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD])
1608 libc_cv_hashstyle=yes
1610 libc_cv_hashstyle=no
1613 AC_SUBST(libc_cv_hashstyle)
1616 AC_CACHE_CHECK(for -fno-toplevel-reorder, libc_cv_fno_toplevel_reorder, [dnl
1617 cat > conftest.c <<EOF
1620 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder
1621 conftest.c 1>&AS_MESSAGE_LOG_FD])
1623 libc_cv_fno_toplevel_reorder=yes
1625 libc_cv_fno_toplevel_reorder=no
1628 if test $libc_cv_fno_toplevel_reorder = yes; then
1629 fno_unit_at_a_time=-fno-toplevel-reorder
1631 fno_unit_at_a_time=-fno-unit-at-a-time
1633 AC_SUBST(fno_unit_at_a_time)
1635 AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
1636 cat > conftest.c <<EOF
1638 main () { return 0;}
1640 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fstack-protector
1641 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1648 AC_SUBST(libc_cv_ssp)
1650 AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl
1651 cat > conftest.c <<EOF
1653 #ifdef __GNUC_GNU_INLINE__
1654 main () { return 0;}
1659 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline
1660 -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD])
1662 libc_cv_gnu89_inline=yes
1664 libc_cv_gnu89_inline=no
1667 if test $libc_cv_gnu89_inline = yes; then
1668 libc_cv_gnu89_inline=-fgnu89-inline
1670 libc_cv_gnu89_inline=
1672 AC_SUBST(libc_cv_gnu89_inline)
1674 if test $elf != yes; then
1675 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1676 [AC_TRY_COMPILE(, [asm (".section .init");
1677 asm (".section .fini");
1678 asm ("${libc_cv_dot_text}");],
1679 libc_cv_have_initfini=yes,
1680 libc_cv_have_initfini=no)])
1681 AC_SUBST(libc_cv_have_initfini)dnl
1682 if test $libc_cv_have_initfini = yes; then
1683 AC_DEFINE(HAVE_INITFINI)
1687 if test $elf = yes; then
1688 AC_CACHE_CHECK(whether cc puts quotes around section names,
1689 libc_cv_have_section_quotes,
1690 [cat > conftest.c <<EOF
1691 static const int foo
1692 __attribute__ ((section ("bar"))) = 1;
1694 if ${CC-cc} -S conftest.c -o conftest.s; then
1695 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1696 libc_cv_have_section_quotes=yes
1698 libc_cv_have_section_quotes=no
1701 libc_cv_have_section_quotes=unknown
1705 if test $libc_cv_have_section_quotes = yes; then
1706 AC_DEFINE(HAVE_SECTION_QUOTES)
1710 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1711 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1712 [cat > conftest.$ac_ext <<EOF
1713 dnl This sometimes fails to find confdefs.h, for some reason.
1714 dnl [#]line $LINENO "[$]0"
1715 [#]line $LINENO "configure"
1716 #include "confdefs.h"
1717 void underscore_test(void) {
1720 if AC_TRY_EVAL(ac_compile); then
1721 if grep _underscore_test conftest* >/dev/null; then
1722 ifelse([$1], , :, [rm -f conftest*
1725 ifelse([$2], , , [rm -f conftest*
1729 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
1730 cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
1731 ifelse([$2], , , [rm -f conftest*
1736 if test $elf = yes; then
1737 libc_cv_asm_underscores=no
1739 if test $ac_cv_prog_cc_works = yes; then
1740 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1741 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1742 libc_cv_asm_underscores=yes,
1743 libc_cv_asm_underscores=no)])
1745 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1746 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1747 libc_cv_asm_underscores=no)])
1750 if test $libc_cv_asm_underscores = no; then
1751 AC_DEFINE(NO_UNDERSCORES)
1754 if test $elf = yes; then
1755 libc_cv_weak_symbols=yes
1758 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1760 cat > conftest.s <<EOF
1762 ${libc_cv_asm_global_directive} foo
1765 .weak bar; bar = foo
1767 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1768 libc_cv_asm_weak_directive=yes
1770 libc_cv_asm_weak_directive=no
1774 if test $libc_cv_asm_weak_directive = no; then
1775 AC_CACHE_CHECK(for assembler .weakext directive,
1776 libc_cv_asm_weakext_directive,
1778 cat > conftest.s <<EOF
1780 ${libc_cv_asm_global_directive} foo
1784 ${libc_cv_asm_global_directive} baz
1787 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1788 libc_cv_asm_weakext_directive=yes
1790 libc_cv_asm_weakext_directive=no
1796 if test $libc_cv_asm_weak_directive = yes; then
1797 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1798 elif test $libc_cv_asm_weakext_directive = yes; then
1799 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1802 AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl
1804 sparc/sparc64*) cfi_offset=2047;;
1807 cat > conftest.s <<EOF
1809 .type func,%function
1813 .cfi_rel_offset 1, $cfi_offset
1816 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1817 libc_cv_asm_cfi_directives=yes
1819 libc_cv_asm_cfi_directives=no
1822 if test $libc_cv_asm_cfi_directives = yes; then
1823 AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES)
1826 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1827 cat > conftest.c <<\EOF
1832 dnl No \ in command here because it ends up inside ''.
1833 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1834 -nostdlib -nostartfiles -Wl,--no-whole-archive
1835 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1836 libc_cv_ld_no_whole_archive=yes
1838 libc_cv_ld_no_whole_archive=no
1841 if test $libc_cv_ld_no_whole_archive = yes; then
1842 no_whole_archive=-Wl,--no-whole-archive
1844 AC_SUBST(no_whole_archive)dnl
1846 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1847 cat > conftest.c <<\EOF
1852 dnl No \ in command here because it ends up inside ''.
1853 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1854 -nostdlib -nostartfiles -fexceptions
1855 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1856 libc_cv_gcc_exceptions=yes
1858 libc_cv_gcc_exceptions=no
1861 if test $libc_cv_gcc_exceptions = yes; then
1862 exceptions=-fexceptions
1864 AC_SUBST(exceptions)dnl
1866 if test "$host_cpu" = powerpc ; then
1867 # Check for a bug present in at least versions 2.8.x of GCC
1868 # and versions 1.0.x of EGCS.
1869 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1870 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1871 libc_cv_c_asmcr0_bug='no',
1872 libc_cv_c_asmcr0_bug='yes')])
1873 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1874 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1878 dnl Check whether compiler understands __builtin_expect.
1879 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1880 [cat > conftest.c <<EOF
1881 #line $LINENO "configure"
1884 a = __builtin_expect (a, 10);
1885 return a == 10 ? 0 : 1;
1888 dnl No \ in command here because it ends up inside ''.
1889 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles
1890 -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then
1891 libc_cv_gcc_builtin_expect=yes
1893 libc_cv_gcc_builtin_expect=no
1896 if test "$libc_cv_gcc_builtin_expect" = yes; then
1897 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1900 AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
1901 cat > conftest.c <<\EOF
1904 __builtin_memset (x, 0, 1000);
1908 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]);
1910 libc_cv_gcc_builtin_memset=no
1912 libc_cv_gcc_builtin_memset=yes
1915 if test "$libc_cv_gcc_builtin_memset" = yes ; then
1916 AC_DEFINE(HAVE_BUILTIN_MEMSET)
1919 AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl
1920 cat > conftest.c <<\EOF
1921 extern char *strstr (const char *, const char *) __asm ("my_strstr");
1922 char *foo (const char *a, const char *b)
1924 return __builtin_strstr (a, b);
1928 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]);
1930 libc_cv_gcc_builtin_redirection=yes
1932 libc_cv_gcc_builtin_redirection=no
1935 if test "$libc_cv_gcc_builtin_redirection" = yes ; then
1936 AC_DEFINE(HAVE_BUILTIN_REDIRECTION)
1939 dnl Check whether the compiler supports the __thread keyword.
1940 if test "x$use__thread" != xno; then
1941 AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
1942 [cat > conftest.c <<\EOF
1943 __thread int a = 42;
1945 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then
1946 libc_cv_gcc___thread=yes
1948 libc_cv_gcc___thread=no
1951 if test "$libc_cv_gcc___thread" = yes; then
1952 AC_DEFINE(HAVE___THREAD)
1955 libc_cv_gcc___thread=no
1958 if test "$libc_cv_gcc___thread" = yes; then
1959 dnl Check whether the compiler supports the tls_model attribute.
1960 AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl
1961 cat > conftest.c <<\EOF
1962 extern __thread int a __attribute__((tls_model ("initial-exec")));
1964 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then
1965 libc_cv_gcc_tls_model_attr=yes
1967 libc_cv_gcc_tls_model_attr=no
1970 if test "$libc_cv_gcc_tls_model_attr" = yes; then
1971 AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE)
1975 dnl Check whether we have the gd library available.
1976 AC_MSG_CHECKING(for libgd)
1977 if test "$with_gd" != "no"; then
1978 old_CFLAGS="$CFLAGS"
1979 CFLAGS="$CFLAGS $libgd_include"
1980 old_LDFLAGS="$LDFLAGS"
1981 LDFLAGS="$LDFLAGS $libgd_ldflags"
1983 LIBS="$LIBS -lgd -lpng -lz -lm"
1984 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1985 CFLAGS="$old_CFLAGS"
1986 LDFLAGS="$old_LDFLAGS"
1991 AC_MSG_RESULT($LIBGD)
1995 if test x$with_selinux = xno ; then
1998 # See if we have the SELinux library
1999 AC_CHECK_LIB(selinux, is_selinux_enabled,
2000 have_selinux=yes, have_selinux=no)
2001 # See if we have the SELinux header with the NSCD permissions in it.
2002 if test x$have_selinux = xyes ; then
2003 AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h])
2004 AC_TRY_COMPILE([#include <selinux/av_permissions.h>],
2005 [#ifdef NSCD__SHMEMHOST
2008 #error NSCD__SHMEMHOST not defined
2010 have_selinux=yes, have_selinux=no)
2011 AC_MSG_RESULT($have_selinux)
2014 if test x$with_selinux = xyes ; then
2015 if test x$have_selinux = xno ; then
2016 AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found])
2020 # Check if we're building with SELinux support.
2021 if test "x$have_selinux" = xyes; then
2022 AC_DEFINE(HAVE_SELINUX, 1, [SELinux support])
2024 # See if we have the libaudit library
2025 AC_CHECK_LIB(audit, audit_log_user_avc_message,
2026 have_libaudit=yes, have_libaudit=no)
2027 if test "x$have_libaudit" = xyes; then
2028 AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support])
2030 AC_SUBST(have_libaudit)
2032 # See if we have the libcap library
2033 AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no)
2034 if test "x$have_libcap" = xyes; then
2035 AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support])
2037 AC_SUBST(have_libcap)
2039 AC_SUBST(have_selinux)
2041 dnl check for the size of 'long double'.
2042 AC_CHECK_SIZEOF(long double, 0)
2043 sizeof_long_double=$ac_cv_sizeof_long_double
2044 AC_SUBST(sizeof_long_double)
2046 ### End of automated tests.
2047 ### Now run sysdeps configure fragments.
2049 # They also can set these variables.
2051 ldd_rewrite_script=no
2052 libc_cv_sysconfdir=$sysconfdir
2053 libc_cv_gcc_unwind_find_fde=no
2056 # Iterate over all the sysdep directories we will use, running their
2057 # configure fragments, and looking for a uname implementation.
2059 for dir in $sysnames; do
2062 *) dest=$srcdir/$dir ;;
2064 if test -r $dest/configure; then
2065 AC_MSG_RESULT(running configure fragment for $dir)
2069 if test -z "$uname"; then
2070 if test -r $dest/uname.c ||
2071 test -r $dest/uname.S ||
2072 { test -r $dest/syscalls.list &&
2073 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
2080 if test x$libc_cv_gcc_unwind_find_fde = xyes; then
2081 AC_DEFINE(EXPORT_UNWIND_FIND_FDE)
2083 AC_SUBST(libc_cv_gcc_unwind_find_fde)
2085 # If we will use the generic uname implementation, we must figure out what
2086 # it will say by examining the system, and write the results in config-name.h.
2087 if test "$uname" = "sysdeps/generic"; then
2090 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
2092 if test $uname_sysname != $config_os; then
2093 config_release=`echo $config_os | sed s/$uname_sysname//`
2096 AC_DEFUN(LIBC_KERNEL_ID, [dnl
2097 if test -r /vmunix; then
2098 kernel_id=`strings /vmunix | grep UNIX`
2099 elif test -r /dynix; then
2100 kernel_id=`strings /dynix | grep DYNIX`
2106 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
2109 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
2111 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
2112 != x$config_release; then
2113 # The configuration release is a substring of the kernel release.
2114 libc_cv_uname_release=$kernel_release
2115 elif test x$config_release != x; then
2116 libc_cv_uname_release=$config_release
2117 elif test x$kernel_release != x; then
2118 libc_cv_uname_release=$kernel_release
2120 libc_cv_uname_release=unknown
2122 uname_release="$libc_cv_uname_release"
2124 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
2127 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
2129 if test -n "$kernel_version"; then
2130 libc_cv_uname_version="$kernel_version"
2132 libc_cv_uname_version=unknown
2134 uname_version="$libc_cv_uname_version"
2136 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
2137 config_uname=config-name.h:config-name.in
2139 # For non-generic uname, we don't need to create config-name.h at all.
2143 dnl This is tested by existing code and it's simpler to avoid changing it.
2144 AC_DEFINE(USE_IN_LIBIO)
2146 # Test for old glibc 2.0.x headers so that they can be removed properly
2147 # Search only in includedir.
2148 AC_MSG_CHECKING(for old glibc 2.0.x headers)
2149 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
2151 old_glibc_headers=yes
2153 old_glibc_headers=no
2155 AC_MSG_RESULT($old_glibc_headers)
2156 if test ${old_glibc_headers} = yes; then
2157 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
2158 AC_MSG_WARN(*** be removed.)
2160 AC_SUBST(old_glibc_headers)
2162 AC_SUBST(libc_cv_slibdir)
2163 AC_SUBST(libc_cv_localedir)
2164 AC_SUBST(libc_cv_sysconfdir)
2165 AC_SUBST(libc_cv_rootsbindir)
2166 AC_SUBST(libc_cv_forced_unwind)
2168 AC_SUBST(use_ldconfig)
2169 AC_SUBST(ldd_rewrite_script)
2171 AC_SUBST(elf) AC_SUBST(xcoff)
2172 if test $elf = yes; then
2175 if test $xcoff = yes; then
2176 AC_DEFINE(HAVE_XCOFF)
2181 if test $shared = default; then
2185 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
2187 cat > conftest.c <<EOF
2188 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
2189 # error PIC is default.
2192 if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
2196 AC_SUBST(pic_default)
2201 AC_SUBST(static_nss)
2202 AC_SUBST(nopic_initfini)
2206 dnl See sysdeps/mach/configure.in for this variable.
2207 AC_SUBST(mach_interface_list)
2209 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
2212 config_makefile=Makefile
2215 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
2216 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
2220 AC_CONFIG_FILES([config.make ${config_makefile} ${config_uname}])
2221 AC_CONFIG_COMMANDS([default],[[
2222 case $CONFIG_FILES in *config.make*)
2223 echo "$config_vars" >> config.make;;
2225 test -d bits || mkdir bits]],[[config_vars='$config_vars']])