1 dnl Process this file with autoconf to produce a configure script.
3 AC_PREREQ(2.13)dnl dnl Minimum Autoconf version required.
4 AC_INIT(include/features.h)
5 AC_CONFIG_HEADER(config.h)
6 AC_CONFIG_AUX_DIR(scripts)
8 # This will get text that should go into config.make.
11 # Check for a --with-gmp argument and set gmp-srcdir in config.make.
13 --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed),
16 yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;;
18 *) config_vars="$config_vars
19 gmp-srcdir = $withval" ;;
22 # Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
24 --with-gd=DIR find libgd include dir and library with prefix DIR,
28 *) libgd_include="-I$withval/include"
29 libgd_ldflags="-L$withval/lib" ;;
32 AC_ARG_WITH(gd-include, dnl
33 --with-gd-include=DIR find libgd include files in DIR,
35 case "$with_gd_include" in
37 *) libgd_include="-I$withval" ;;
40 AC_ARG_WITH(gd-lib, dnl
41 --with-gd-lib=DIR find libgd library files in DIR,
43 case "$with_gd_lib" in
45 *) libgd_ldflags="-L$withval" ;;
49 if test -n "$libgd_include"; then
50 config_vars="$config_vars
51 CFLAGS-memusagestat.c = $libgd_include"
53 if test -n "$libgd_ldflags"; then
54 config_vars="$config_vars
55 libgd-LDFLAGS = $libgd_ldflags"
58 dnl Arguments to specify presence of other packages/features.
60 [ --with-fp if using floating-point hardware [default=yes]],
61 with_fp=$withval, with_fp=yes)
62 AC_ARG_WITH(binutils, dnl
63 --with-binutils=PATH specify location of binutils (as and ld),
64 path_binutils=$withval, path_binutils='')
66 --with-elf if using the ELF object format,
69 [ --without-cvs if CVS should not be used],
70 with_cvs=$withval, with_cvs=yes)
71 if test "$with_cvs" = yes; then
72 if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
79 AC_ARG_WITH(headers, dnl
80 [ --with-headers=PATH location of system headers to use
81 [e.g. /usr/src/linux/include]
82 [default=compiler default]],
83 sysheaders=$withval, sysheaders='')
85 AC_ARG_ENABLE(libio, dnl
86 [ --enable-libio build in GNU libio instead of GNU stdio],
87 [if test $enableval = yes; then
94 AC_ARG_ENABLE(sanity-checks, dnl
95 [ --disable-sanity-checks really do not use threads (should not be used
96 except in special situations) [default=yes]],
97 enable_sanity=$enableval, enable_sanity=yes)
99 dnl Arguments to enable or disable building the static, shared, profiled,
100 dnl and -fomit-frame-pointer libraries.
101 dnl I've disabled this for now since we cannot build glibc without static
102 dnl libraries built in the moment.
103 dnl AC_ARG_ENABLE(static, dnl
104 dnl [ --enable-static build static library [default=yes]],
105 dnl static=$enableval, static=yes)
107 AC_ARG_ENABLE(shared, dnl
108 [ --enable-shared build shared library [default=yes if GNU ld & ELF]],
109 shared=$enableval, shared=default)
110 AC_ARG_ENABLE(profile, dnl
111 [ --enable-profile build profiled library [default=yes]],
112 profile=$enableval, profile=yes)
113 AC_ARG_ENABLE(omitfp, dnl
114 [ --enable-omitfp build undebuggable optimized library [default=no]],
115 omitfp=$enableval, omitfp=no)
116 AC_ARG_ENABLE(bounded, dnl
117 [ --enable-bounded build with runtime bounds checking [default=no]],
118 bounded=$enableval, bounded=no)
119 AC_ARG_ENABLE(versioning, dnl
120 [ --disable-versioning do not include versioning information in the
121 library objects [default=yes if supported]],
122 enable_versioning=$enableval, enable_versioning=yes)
124 AC_ARG_ENABLE(oldest-abi, dnl
125 [ --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2]
126 [default=glibc default]],
127 oldest_abi=$enableval, oldest_abi=no)
128 if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
131 AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
135 dnl Generic infrastructure for drop-in additions to libc.
136 AC_ARG_ENABLE(add-ons, dnl
137 [ --enable-add-ons[=DIR1,DIR2]...
138 configure and build add-ons in DIR1,DIR2,...
139 search for add-ons if no parameter given],
140 [case "$enableval" in
141 yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'`
142 test "$add_ons" = "*" && add_ons= ;;
143 *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;;
147 AC_CONFIG_SUBDIRS($add_ons)
149 if test x"$add_ons" != x; then
150 for f in $add_ons; do
152 if test "$f" = "crypt"; then
154 *** It seems that you're using an old \`crypt' add-on. crypt is now
155 *** part of glibc and using the old add-on will not work with this
156 *** release. Start again with fresh sources and without the old
157 *** \`crypt' add-on.])
159 if test "$f" = "localedata"; then
161 *** It seems that you're using an old \`localedata' add-on. localedata
162 *** is now part of glibc and using the old add-on will not work with
163 *** this release. Start again with fresh sources and without the old
164 *** \`localedata' add-on.])
166 # Test whether such a subdir really exists.
167 if test -d $srcdir/$f; then
168 add_ons_pfx="$add_ons_pfx $f/"
170 AC_MSG_ERROR(add-on directory \"$f\" does not exist)
175 dnl On some platforms we cannot use dynamic loading. We must provide
176 dnl static NSS modules.
177 AC_ARG_ENABLE(static-nss, dnl
178 [ --enable-static-nss build static NSS modules [default=no]],
179 static_nss=$enableval, static_nss=no)
180 if test x"$static_nss" = xyes; then
181 AC_DEFINE(DO_STATIC_NSS)
184 AC_ARG_ENABLE(force-install,
185 [ --disable-force-install don't force installation of files from this package,
186 even if they are older than the installed files],
187 force_install=$enableval, force_install=yes)
188 AC_SUBST(force_install)
190 dnl On some platforms we allow dropping compatibility with all kernel
192 AC_ARG_ENABLE(kernel,
193 [ --enable-kernel=VERSION compile for compatibility with kernel not older
195 minimum_kernel=$enableval)
196 dnl Prevent unreasonable values.
197 if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
198 # Better nothing than this.
201 if test "$minimum_kernel" = current; then
202 minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
206 dnl For the development we sometimes want gcc to issue even more warnings.
207 dnl This is not the default since many of the extra warnings are not
209 AC_ARG_ENABLE(all-warnings,
210 [ --enable-all-warnings enable all useful warnings gcc can issue],
211 all_warnings=$enableval)
212 AC_SUBST(all_warnings)
216 # The way shlib-versions is used to generate soversions.mk uses a
217 # fairly simplistic model for name recognition that can't distinguish
218 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
219 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
220 # tell. This doesn't get used much beyond that, so it's fairly safe.
225 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
229 # We keep the original values in `$config_*' and never modify them, so we
230 # can write them unchanged into config.make. Everything else uses
231 # $machine, $vendor, and $os, and changes them whenever convenient.
232 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
234 # Don't allow vendor == "unknown"
235 test "$config_vendor" = unknown && config_vendor=
236 config_os="`echo $config_os | sed 's/^unknown-//'`"
238 # Some configurations imply other options.
240 gnu* | linux* | bsd4.4* | netbsd* | freebsd*)
241 # These systems always use GNU tools.
242 gnu_ld=yes gnu_as=yes ;;
245 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
246 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
248 gnu* | linux* | sysv4* | solaris2* | irix6*)
249 # These systems (almost) always use the ELF format.
254 machine=$config_machine
255 vendor=$config_vendor
258 # config.guess on some IBM machines says `rs6000' instead of `powerpc'.
260 if test "$machine" = rs6000; then
265 ### I put this here to prevent those annoying emails from people who cannot
266 ### read and try to compile glibc on unsupported platforms. --drepper
268 ### By using the undocumented --enable-hacker-mode option for configure
269 ### one can skip this test to make the configuration not fail for unsupported
272 if test -z "$enable_hacker_mode"; then
273 case "$machine-$host_os" in
274 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
277 echo "*** The GNU C library is currently not available for this platform."
278 echo "*** So far nobody cared to port it and if there is no volunteer it"
279 echo "*** might never happen. So, if you have interest to see glibc on"
280 echo "*** this platform visit"
281 echo "*** http://www.gnu.org/software/libc/porting.html"
282 echo "*** and join the group of porters"
288 dnl We need to use [ and ] for other purposes for a while now.
290 # Expand the configuration machine name into a subdirectory by architecture
291 # type and particular chip.
293 a29k | am29000) base_machine=a29k machine=a29k ;;
294 alpha*) base_machine=alpha machine=alpha/$machine ;;
295 arm*) base_machine=arm machine=arm/arm32/$machine ;;
296 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
297 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
298 hppa*64*) base_machine=hppa machine=hppa/hppa64 ;;
299 hppa*) base_machine=hppa machine=hppa/hppa1.1 ;;
300 i[3456]86) base_machine=i386 machine=i386/$machine ;;
301 ia64) base_machine=ia64 machine=ia64 ;;
302 m680?0) base_machine=m68k machine=m68k/$machine ;;
303 m68k) base_machine=m68k machine=m68k/m68020 ;;
304 m88???) base_machine=m88k machine=m88k/$machine ;;
305 m88k) base_machine=m88k machine=m88k/m88100 ;;
306 mips64*) base_machine=mips64 machine=mips/mips64/$machine ;;
307 mips*) base_machine=mips
309 IP22) machine=mips/mips3 ;;
310 *) machine=mips/$machine ;;
312 s390) base_machine=s390 machine=s390/s390-32 ;;
313 s390x) base_machine=s390 machine=s390/s390-64 ;;
314 sh3*) base_machine=sh machine=sh/sh3 ;;
315 sh4*) base_machine=sh machine=sh/sh4 ;;
317 base_machine=sparc machine=sparc/sparc32 ;;
318 sparcv8 | supersparc | hypersparc)
319 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
320 sparcv8plus | sparcv8plusa | sparcv9)
321 base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
322 sparcv8plusb | sparcv9b)
323 base_machine=sparc machine=sparc/sparc32/sparcv9b ;;
324 sparc64 | ultrasparc)
325 base_machine=sparc machine=sparc/sparc64 ;;
326 sparc64b | ultrasparc3)
327 base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
328 thumb*) base_machine=thumb machine=arm/thumb/$machine ;;
331 AC_SUBST(base_machine)
333 if test "$base_machine" = "i386"; then
334 AC_DEFINE(USE_REGPARMS)
337 # Compute the list of sysdep directories for this configuration.
338 # This can take a while to compute.
339 sysdep_dir=$srcdir/sysdeps
340 AC_MSG_CHECKING(sysdep dirs)
341 dnl We need to use [ and ] for other purposes for a while now.
343 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
344 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
349 netbsd* | 386bsd* | freebsd* | bsdi*)
350 base_os=unix/bsd/bsd4.4 ;;
351 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
353 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
356 base_os=unix/sysv/irix6/$os ;;
358 base_os=unix/sysv/sysv4 ;;
360 base_os=unix/sysv/hpux/$os ;;
362 base_os=unix/sysv/aix/aix4.3 ;;
364 base_os=standalone ;;
369 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
372 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
376 o=`echo $tail | sed 's/[0-9]*$//'`
377 if test $o != $tail; then
380 # For linux-gnu, try linux-gnu, then linux.
381 o=`echo $tail | sed 's/-.*$//'`
382 if test $o != $tail; then
386 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
389 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
395 # For sparc/sparc32, try sparc/sparc32 and then sparc.
398 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
400 # Prepend the machine's FPU directory unless --without-fp.
401 if test "$with_fp" = yes; then
408 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
411 # Find what sysdep directories exist.
413 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
414 for d in $add_ons_pfx ''; do
415 for b in $base ''; do
416 for m0 in $mach ''; do
417 for v in /$vendor ''; do
418 test "$v" = / && continue
419 for o in /$ostry ''; do
420 test "$o" = / && continue
421 for m in $mach ''; do
422 if test "$m0$b$v$o$m"; then
423 try="${d}sysdeps$m0$b$v$o$m"
424 test -n "$enable_debug_configure" &&
425 echo "$0 [DEBUG]: try $try" >&2
426 if test -d $srcdir/$try; then
427 sysnames="$sysnames $try"
428 { test -n "$o" || test -n "$b"; } && os_used=t
429 { test -n "$m" || test -n "$m0"; } && machine_used=t
440 if test -z "$os_used" && test "$os" != none; then
441 AC_MSG_ERROR(Operating system $os is not supported.)
443 if test -z "$machine_used" && test "$machine" != none; then
444 AC_MSG_ERROR(The $machine is not supported.)
447 # We have now validated the configuration.
450 # If using ELF, look for an `elf' subdirectory of each machine directory.
451 # We prepend these rather than inserting them whereever the machine appears
452 # because things specified by the machine's ELF ABI should override
453 # OS-specific things, and should always be the same for any OS on the
454 # machine (otherwise what's the point of an ABI?).
455 if test "$elf" = yes; then
457 for d in $add_ons_pfx ''; do
459 if test -d $srcdir/${d}sysdeps$m/elf; then
460 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
464 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
468 # Expand the list of system names into a full list of directories
469 # from each element's parent name and Implies file (if present).
472 while test $# -gt 0; do
476 case " $names " in *" $name "*)
477 # Already in the list.
481 # Report each name as we discover it, so there is no long pause in output.
482 echo $ac_n "$name $ac_c" >&AC_FD_MSG
484 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
488 *) xsrcdir=$srcdir/ ;;
490 test -n "$enable_debug_configure" &&
491 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
493 if test -f $xsrcdir$name/Implies; then
494 # Collect more names from the `Implies' file (removing comments).
495 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
497 for x in $implied_candidate; do
498 if test -d $xsrcdir$name_base/$x; then
499 implied="$implied $name_base/$x";
501 AC_MSG_WARN($name/Implies specifies nonexistent $x)
508 # Add NAME to the list of names.
511 # Find the parent of NAME, using the empty string if it has none.
513 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
516 # Add the names implied by NAME, and NAME's parent (if it has one), to
517 # the list of names to be processed (the argument list). We prepend the
518 # implied names to the list and append the parent. We want implied
519 # directories to come before further directories inferred from the
520 # configuration components; this ensures that for sysv4, unix/common
521 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
523 sysnames="`echo $implied $* $parent`"
524 test -n "$sysnames" && set $sysnames
527 # Add the default directories.
528 default_sysnames=sysdeps/generic
529 if test "$elf" = yes; then
530 default_sysnames="sysdeps/generic/elf $default_sysnames"
532 sysnames="$names $default_sysnames"
534 # The other names were emitted during the scan.
535 AC_MSG_RESULT($default_sysnames)
541 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
542 # The makefiles need to use a different form to find it in $srcdir.
543 INSTALL='\$(..)./scripts/install-sh -c'
547 # We need the physical current working directory. We cannot use the
548 # "pwd -P" shell builtin since that's not portable. Instead we try to
549 # find a pwd binary. Note that assigning to the PWD environment
550 # variable might have some interesting side effects, so we don't do
552 AC_PATH_PROG(PWD_P, pwd, no)
553 if test "$PWD_P" = no; then
554 AC_MSG_ERROR(*** A pwd binary could not be found.)
557 # These programs are version sensitive.
558 AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
559 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
560 [version \([egcygnustpi-]*[0-9.]*\)],
561 [*gcc-2.9[5-9].*|*2.8.[1-9]*|*2.9|*2.9.[0-9]*|2.9[5-9]*|3.[0-9]*|cygnus-2.9[1-9]*|gcc-2.9[5-9]|gcc-2.1[0-9][0-9]|sgicc-*],
563 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
564 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
565 [3.79* | 3.[89]*], critic_missing=t)
567 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
568 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
569 [0.[1-9][0-9].* | [1-9].*], MSGFMT=: aux_missing=t)
570 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
571 [GNU texinfo.* \([0-9][0-9.]*\)],
572 [4.*], MAKEINFO=: aux_missing=t)
573 AC_CHECK_PROG_VER(SED, gsed sed, --version,
574 [GNU sed version \([0-9]*\.[0-9.]*\)],
575 [3.0[2-9]*|3.[1-9]*|[4-9]*], SED=: aux_missing=t)
579 if test $host != $build; then
580 AC_CHECK_PROGS(BUILD_CC, gcc cc)
582 AC_SUBST(cross_compiling)
585 AC_CHECK_TOOL(MIG, mig)
587 # Accept binutils 2.10.1 or newer (and also any ia64 2.9 version)
588 # XXX Commented out because it filters out too many good versions.
590 # AC_CHECK_PROG_VER(AS, $AS, --version,
591 # [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
592 # [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t)
594 if test -n "$critic_missing"; then
596 *** Some critical program is missing or too old.
597 *** Check the INSTALL file for required versions.])
600 test -n "$aux_missing" && AC_MSG_WARN([
601 *** An auxiliary program is missing or too old;
602 *** some features will be disabled.
603 *** Check the INSTALL file for required versions.])
605 # glibcbug.in wants to know the compiler version.
606 CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'`
609 # if using special system headers, find out the compiler's sekrit
610 # header directory and add that to the list. NOTE: Only does the right
611 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
612 if test -n "$sysheaders"; then
613 ccheaders=`$CC -print-file-name=include`
614 SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
616 AC_SUBST(SYSINCLUDES)
618 # check if ranlib is necessary
619 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
620 cat > conftest.c <<EOF
625 $CC $CFLAGS -c conftest.c
626 $AR cr conftest.a conftest.c
627 cp conftest.a conftest2.a
629 if cmp -s conftest.a conftest2.a; then
630 libc_cv_ranlib_necessary=no
632 libc_cv_ranlib_necessary=yes
635 if test "$libc_cv_ranlib_necessary" = no; then
639 # Test if LD_LIBRARY_PATH contains the notation for the current directory
640 # since this would lead to problems installing/building glibc.
641 # LD_LIBRARY_PATH contains the current directory if one of the following
643 # - one of the terminals (":" and ";") is the first or last sign
644 # - two terminals occur directly after each other
645 # - the path contains an element with a dot in it
646 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
648 case ${LD_LIBRARY_PATH} in
649 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
650 ld_library_path_setting="contains current directory"
653 ld_library_path_setting="ok"
657 AC_MSG_RESULT($ld_library_path_setting)
658 if test "$ld_library_path_setting" != "ok"; then
660 *** LD_LIBRARY_PATH shouldn't contain the current directory when
661 *** building glibc. Please change the environment variable
662 *** and run configure again.])
665 AC_PATH_PROG(BASH, bash, no)
666 if test "$BASH" != no &&
667 $BASH -c 'test "$BASH_VERSINFO" \
668 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
669 libc_cv_have_bash2=yes
671 libc_cv_have_bash2=no
673 AC_SUBST(libc_cv_have_bash2)
675 dnl We need a ksh compatible shell for tzselect.
676 if test "$BASH" = no; then
677 AC_PATH_PROG(KSH, ksh, no)
678 if test "$KSH" = no; then
688 AC_SUBST(libc_cv_have_ksh)
691 AC_PATH_PROG(PERL, perl, no)
692 if test "$PERL" != no &&
693 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
696 AC_PATH_PROG(INSTALL_INFO, install-info, no,
697 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
698 if test "$INSTALL_INFO" != "no"; then
699 AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info,
701 # There is a hard ^_ on the next line. I am open to better ideas.
703 echo 'File: dir Node: Top This is the top of the INFO tree'
704 echo '* Menu:') >conftest.d/dir
705 (echo 'INFO-DIR-SECTION i-d-s works'
706 echo 'START-INFO-DIR-ENTRY'
707 echo '* Prog: (prog). Program.'
708 echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info
709 if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1
711 if grep -s 'i-d-s works' conftest.d/dir >/dev/null
712 then libc_cv_old_debian_install_info=no
713 else libc_cv_old_debian_install_info=yes
715 else libc_cv_old_debian_install_info=no testfailed=t
718 if test -n "$testfailed"
719 then AC_MSG_WARN([install-info errored out, check config.log])
721 OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info
723 AC_SUBST(OLD_DEBIAN_INSTALL_INFO)
725 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
727 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
728 echo '#include <stddef.h>
729 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
730 if eval "$ac_cpp conftest.c 2>/dev/null" \
731 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
732 libc_cv_signed_size_t=no
734 libc_cv_signed_size_t=yes
737 if test $libc_cv_signed_size_t = yes; then
738 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
739 cat >> confdefs.h <<\EOF
741 #define __SIZE_TYPE__ unsigned
745 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
747 [#define __need_size_t
748 #define __need_wchar_t
751 #include <stddef.h>], [size_t size; wchar_t wchar;
753 #error stddef.h ignored __need_*
755 if (&size == NULL || &wchar == NULL) abort ();],
756 libc_cv_friendly_stddef=yes,
757 libc_cv_friendly_stddef=no)])
758 if test $libc_cv_friendly_stddef = yes; then
759 config_vars="$config_vars
760 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
763 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
764 libc_cv_need_minus_P, [dnl
765 cat > conftest.S <<EOF
766 #include "confdefs.h"
767 /* Nothing whatsoever. */
769 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
770 libc_cv_need_minus_P=no
772 libc_cv_need_minus_P=yes
775 if test $libc_cv_need_minus_P = yes; then
776 config_vars="$config_vars
777 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
780 AC_MSG_CHECKING(whether .text pseudo-op must be used)
781 AC_CACHE_VAL(libc_cv_dot_text, [dnl
782 cat > conftest.s <<EOF
786 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
787 libc_cv_dot_text=.text
790 if test -z "$libc_cv_dot_text"; then
796 AC_CACHE_CHECK(for assembler global-symbol directive,
797 libc_cv_asm_global_directive, [dnl
798 libc_cv_asm_global_directive=UNKNOWN
799 for ac_globl in .globl .global .EXPORT; do
800 cat > conftest.s <<EOF
805 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
806 libc_cv_asm_global_directive=${ac_globl}
809 test $libc_cv_asm_global_directive != UNKNOWN && break
811 if test $libc_cv_asm_global_directive = UNKNOWN; then
812 AC_MSG_ERROR(cannot determine asm global directive)
814 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
817 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
818 cat > conftest.s <<EOF
821 .set glibc_conftest_frobozz,foo
822 $libc_cv_asm_global_directive glibc_conftest_frobozz
824 # The alpha-dec-osf1 assembler gives only a warning for `.set'
825 # (but it doesn't work), so we must do a linking check to be sure.
826 cat > conftest1.c <<\EOF
827 extern int glibc_conftest_frobozz;
828 main () { printf ("%d\n", glibc_conftest_frobozz); }
830 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
831 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
832 libc_cv_asm_set_directive=yes
834 libc_cv_asm_set_directive=no
837 if test $libc_cv_asm_set_directive = yes; then
838 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
841 # The Aix ld uses global .symbol_names instead of symbol_names.
844 AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
847 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
848 [cat > conftest.s <<EOF
851 .symver _sym,sym@VERS
853 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
854 libc_cv_asm_symver_directive=yes
856 libc_cv_asm_symver_directive=no
859 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
860 if test $libc_cv_asm_symver_directive = yes; then
861 cat > conftest.s <<EOF
864 .symver _sym,sym@VERS
866 cat > conftest.map <<EOF
875 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
876 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
877 -nostartfiles -nostdlib
878 -Wl,--version-script,conftest.map
881 libc_cv_ld_version_script_option=yes
883 libc_cv_ld_version_script_option=no
886 libc_cv_ld_version_script_option=no
889 libc_cv_ld_version_script_option=no
892 if test $shared != no &&
893 test $libc_cv_asm_symver_directive = yes &&
894 test $libc_cv_ld_version_script_option = yes &&
895 test $enable_versioning = yes; then
897 AC_DEFINE(DO_VERSIONING)
903 if test $shared != no && test $VERSIONING = no; then
905 *** WARNING: You should not compile GNU libc without versioning. Not using
906 *** versioning will introduce incompatibilities so that old binaries
907 *** will not run anymore.
908 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
910 if test $elf = yes; then
911 AC_CACHE_CHECK(for .previous assembler directive,
912 libc_cv_asm_previous_directive, [dnl
913 cat > conftest.s <<EOF
917 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
918 libc_cv_asm_previous_directive=yes
920 libc_cv_asm_previous_directive=no
923 if test $libc_cv_asm_previous_directive = yes; then
924 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
926 AC_CACHE_CHECK(for .popsection assembler directive,
927 libc_cv_asm_popsection_directive, [dnl
928 cat > conftest.s <<EOF
929 .pushsection foo_section
932 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
933 libc_cv_asm_popsection_directive=yes
935 libc_cv_asm_popsection_directive=no
938 if test $libc_cv_asm_popsection_directive = yes; then
939 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
942 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
943 libc_cv_asm_protected_directive, [dnl
944 cat > conftest.s <<EOF
950 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
951 libc_cv_asm_protected_directive=yes
953 libc_cv_asm_protected_directive=no
956 AC_SUBST(libc_cv_asm_protected_directive)
958 AC_CACHE_CHECK(for -z nodelete option,
959 libc_cv_z_nodelete, [dnl
960 cat > conftest.c <<EOF
961 int _start (void) { return 42; }
963 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC])
965 libc_cv_z_nodelete=yes
967 libc_cv_z_nodelete=no
970 AC_SUBST(libc_cv_z_nodelete)
972 AC_CACHE_CHECK(for -z nodlopen option,
973 libc_cv_z_nodlopen, [dnl
974 cat > conftest.c <<EOF
975 int _start (void) { return 42; }
977 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC])
979 libc_cv_z_nodlopen=yes
981 libc_cv_z_nodlopen=no
984 AC_SUBST(libc_cv_z_nodlopen)
986 AC_CACHE_CHECK(for -z initfirst option,
987 libc_cv_z_initfirst, [dnl
988 cat > conftest.c <<EOF
989 int _start (void) { return 42; }
991 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,initfirst 1>&AC_FD_CC])
993 libc_cv_z_initfirst=yes
995 libc_cv_z_initfirst=no
998 AC_SUBST(libc_cv_z_initfirst)
1000 AC_CACHE_CHECK(for -Bgroup option,
1001 libc_cv_Bgroup, [dnl
1002 cat > conftest.c <<EOF
1003 int _start (void) { return 42; }
1005 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AC_FD_CC])
1012 AC_SUBST(libc_cv_Bgroup)
1015 if test $elf != yes; then
1016 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1017 [AC_TRY_COMPILE(, [asm (".section .init");
1018 asm (".section .fini");
1019 asm ("${libc_cv_dot_text}");],
1020 libc_cv_have_initfini=yes,
1021 libc_cv_have_initfini=no)])
1022 AC_SUBST(libc_cv_have_initfini)dnl
1023 if test $libc_cv_have_initfini = yes; then
1024 AC_DEFINE(HAVE_INITFINI)
1028 if test $elf = yes -a $gnu_ld = yes; then
1029 AC_CACHE_CHECK(whether cc puts quotes around section names,
1030 libc_cv_have_section_quotes,
1031 [cat > conftest.c <<EOF
1032 static const int foo
1033 __attribute__ ((section ("bar"))) = 1;
1035 if ${CC-cc} -S conftest.c -o conftest.s; then
1036 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1037 libc_cv_have_section_quotes=yes
1039 libc_cv_have_section_quotes=no
1042 libc_cv_have_section_quotes=unknown
1046 if test $libc_cv_have_section_quotes = yes; then
1047 AC_DEFINE(HAVE_SECTION_QUOTES)
1051 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1052 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1053 [cat > conftest.$ac_ext <<EOF
1054 dnl This sometimes fails to find confdefs.h, for some reason.
1055 dnl [#]line __oline__ "[$]0"
1056 [#]line __oline__ "configure"
1057 #include "confdefs.h"
1058 void underscore_test(void) {
1061 if AC_TRY_EVAL(ac_compile); then
1062 if grep _underscore_test conftest* >/dev/null; then
1063 ifelse([$1], , :, [rm -f conftest*
1066 ifelse([$2], , , [rm -f conftest*
1070 echo "configure: failed program was:" >&AC_FD_CC
1071 cat conftest.$ac_ext >&AC_FD_CC
1072 ifelse([$2], , , [rm -f conftest*
1077 if test $elf = yes; then
1078 libc_cv_asm_underscores=no
1080 if test $ac_cv_prog_cc_works = yes; then
1081 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1082 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1083 libc_cv_asm_underscores=yes,
1084 libc_cv_asm_underscores=no)])
1086 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1087 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1088 libc_cv_asm_underscores=no)])
1091 if test $libc_cv_asm_underscores = no; then
1092 AC_DEFINE(NO_UNDERSCORES)
1095 if test $elf = yes; then
1096 libc_cv_weak_symbols=yes
1099 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1101 cat > conftest.s <<EOF
1103 ${libc_cv_asm_global_directive} foo
1106 .weak bar; bar = foo
1108 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1109 libc_cv_asm_weak_directive=yes
1111 libc_cv_asm_weak_directive=no
1115 if test $libc_cv_asm_weak_directive = no; then
1116 AC_CACHE_CHECK(for assembler .weakext directive,
1117 libc_cv_asm_weakext_directive,
1119 cat > conftest.s <<EOF
1121 ${libc_cv_asm_global_directive} foo
1125 ${libc_cv_asm_global_directive} baz
1128 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1129 libc_cv_asm_weakext_directive=yes
1131 libc_cv_asm_weakext_directive=no
1137 if test $libc_cv_asm_weak_directive = yes; then
1138 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1139 elif test $libc_cv_asm_weakext_directive = yes; then
1140 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1143 dnl The standard hppa assembler uses `;' to start comments and `!'
1144 dnl as a line separator. CRIS uses `;' to start comments and `@' for
1146 case "${host_cpu}-${host_os}" in
1148 libc_cv_asm_line_sep='@'
1149 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1152 AC_CACHE_CHECK(for assembler line separator,
1153 libc_cv_asm_line_sep, [dnl
1154 cat > conftest.s <<EOF
1157 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
1158 libc_cv_asm_line_sep='!'
1160 if test -z "$enable_hacker_mode"; then
1161 echo "*** You need a newer assembler to compile glibc"
1165 libc_cv_asm_line_sep=';'
1168 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1172 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1173 cat > conftest.c <<\EOF
1178 dnl No \ in command here because it ends up inside ''.
1179 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1180 -nostdlib -nostartfiles -Wl,--no-whole-archive
1181 -o conftest conftest.c 1>&AC_FD_CC]); then
1182 libc_cv_ld_no_whole_archive=yes
1184 libc_cv_ld_no_whole_archive=no
1187 if test $libc_cv_ld_no_whole_archive = yes; then
1188 no_whole_archive=-Wl,--no-whole-archive
1190 AC_SUBST(no_whole_archive)dnl
1192 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1193 cat > conftest.c <<\EOF
1198 dnl No \ in command here because it ends up inside ''.
1199 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1200 -nostdlib -nostartfiles -fexceptions
1201 -o conftest conftest.c 1>&AC_FD_CC]); then
1202 libc_cv_gcc_exceptions=yes
1204 libc_cv_gcc_exceptions=no
1207 if test $libc_cv_gcc_exceptions = yes; then
1208 exceptions=-fexceptions
1210 AC_SUBST(exceptions)dnl
1212 if test "$base_machine" = alpha ; then
1213 AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl
1214 cat > conftest.c <<\EOF
1218 if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]);
1220 libc_cv_gcc_alpha_ng_prefix=yes
1222 libc_cv_gcc_alpha_ng_prefix=no
1225 if test $libc_cv_gcc_alpha_ng_prefix = yes ; then
1226 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$")
1228 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "")
1232 if test "$host_cpu" = powerpc ; then
1233 # Check for a bug present in at least versions 2.8.x of GCC
1234 # and versions 1.0.x of EGCS.
1235 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1236 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1237 libc_cv_c_asmcr0_bug='no',
1238 libc_cv_c_asmcr0_bug='yes')])
1239 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1240 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1244 AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
1245 [cat > conftest.c <<EOF
1246 #line __oline__ "configure"
1247 static char __EH_FRAME_BEGIN__[];
1250 #ifdef CHECK__register_frame
1251 __register_frame (__EH_FRAME_BEGIN__);
1252 __deregister_frame (__EH_FRAME_BEGIN__);
1254 #ifdef CHECK__register_frame_info
1255 __register_frame_info (__EH_FRAME_BEGIN__);
1256 __deregister_frame_info (__EH_FRAME_BEGIN__);
1261 /* FIXME: this is fragile. */
1271 dnl No \ in command here because it ends up inside ''.
1272 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
1273 -nostdlib -nostartfiles
1274 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1275 libc_cv_gcc_dwarf2_unwind_info=static
1277 libc_cv_gcc_dwarf2_unwind_info=no
1279 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
1280 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame
1281 -nostdlib -nostartfiles
1282 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1283 libc_cv_gcc_dwarf2_unwind_info=yes
1285 libc_cv_gcc_dwarf2_unwind_info=no
1289 case $libc_cv_gcc_dwarf2_unwind_info in
1291 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1294 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1295 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
1299 dnl Check whether compiler understands __builtin_expect.
1300 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1301 [cat > conftest.c <<EOF
1302 #line __oline__ "configure"
1305 a = __builtin_expect (a, 10);
1306 return a == 10 ? 0 : 1;
1309 dnl No \ in command here because it ends up inside ''.
1310 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1311 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1312 libc_cv_gcc_builtin_expect=yes
1314 libc_cv_gcc_builtin_expect=no
1317 if test "$libc_cv_gcc_builtin_expect" = yes; then
1318 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1321 dnl Check whether the compiler supports subtraction of local labels.
1322 AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
1323 [cat > conftest.c <<EOF
1325 #line __oline__ "configure"
1328 static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
1329 void *p = &&l1 + ar[a];
1338 dnl No \ in command here because it ends up inside ''.
1339 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1340 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1341 libc_cv_gcc_subtract_local_labels=yes
1343 libc_cv_gcc_subtract_local_labels=no
1346 if test "$libc_cv_gcc_subtract_local_labels" = yes; then
1347 AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
1350 dnl Check whether we have the gd library available.
1351 AC_MSG_CHECKING(for libgd)
1352 if test "$with_gd" != "no"; then
1353 old_CFLAGS="$CFLAGS"
1354 CFLAGS="$CFLAGS $libgd_include"
1355 old_LDFLAGS="$LDFLAGS"
1356 LDFLAGS="$LDFLAGS $libgd_ldflags"
1358 LIBS="$LIBS -lgd -lpng -lz -lm"
1359 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1360 CFLAGS="$old_CFLAGS"
1361 LDFLAGS="$old_LDFLAGS"
1366 AC_MSG_RESULT($LIBGD)
1369 dnl check for the size of 'long double'.
1370 AC_CHECK_SIZEOF(long double, 0)
1371 sizeof_long_double=$ac_cv_sizeof_long_double
1372 AC_SUBST(sizeof_long_double)
1374 ### End of automated tests.
1375 ### Now run sysdeps configure fragments.
1377 # sysdeps configure fragments may set these with files to be linked below.
1381 # They also can set these variables.
1383 ldd_rewrite_script=no
1385 # Iterate over all the sysdep directories we will use, running their
1386 # configure fragments, and looking for a uname implementation.
1388 for dir in $sysnames; do
1391 *) dest=$srcdir/$dir ;;
1393 if test -r $dest/configure; then
1394 AC_MSG_RESULT(running configure fragment for $dest)
1398 if test -z "$uname"; then
1399 if test -r $dest/uname.c ||
1400 test -r $dest/uname.S ||
1401 { test -r $dest/syscalls.list &&
1402 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
1409 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
1411 # If we will use the generic uname implementation, we must figure out what
1412 # it will say by examining the system, and write the results in config-name.h.
1413 if test "$uname" = "sysdeps/generic"; then
1416 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
1418 if test $uname_sysname != $config_os; then
1419 config_release=`echo $config_os | sed s/$uname_sysname//`
1422 AC_DEFUN(LIBC_KERNEL_ID, [dnl
1423 if test -r /vmunix; then
1424 kernel_id=`strings /vmunix | grep UNIX`
1425 elif test -r /dynix; then
1426 kernel_id=`strings /dynix | grep DYNIX`
1432 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
1433 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1435 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
1437 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
1438 != x$config_release; then
1439 # The configuration release is a substring of the kernel release.
1440 libc_cv_uname_release=$kernel_release
1441 elif test x$config_release != x; then
1442 libc_cv_uname_release=$config_release
1443 elif test x$kernel_release != x; then
1444 libc_cv_uname_release=$kernel_release
1446 libc_cv_uname_release=unknown
1448 uname_release="$libc_cv_uname_release"
1450 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
1451 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1453 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
1455 if test -n "$kernel_version"; then
1456 libc_cv_uname_version="$kernel_version"
1458 libc_cv_uname_version=unknown
1460 uname_version="$libc_cv_uname_version"
1462 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
1463 config_uname=config-name.h:config-name.in
1465 # For non-generic uname, we don't need to create config-name.h at all.
1469 AC_MSG_CHECKING(stdio selection)
1472 libio) AC_DEFINE(USE_IN_LIBIO) ;;
1473 default) stdio=stdio ;;
1475 AC_MSG_RESULT($stdio)
1477 # Test for old glibc 2.0.x headers so that they can be removed properly
1478 # Search only in includedir.
1479 AC_MSG_CHECKING(for old glibc 2.0.x headers)
1480 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
1482 old_glibc_headers=yes
1484 old_glibc_headers=no
1486 AC_MSG_RESULT($old_glibc_headers)
1487 if test ${old_glibc_headers} = yes; then
1488 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
1489 AC_MSG_WARN(*** be removed.)
1491 AC_SUBST(old_glibc_headers)
1493 AC_SUBST(libc_cv_slibdir)
1494 AC_SUBST(libc_cv_localedir)
1495 AC_SUBST(libc_cv_sysconfdir)
1496 AC_SUBST(libc_cv_rootsbindir)
1498 AC_SUBST(use_ldconfig)
1499 AC_SUBST(ldd_rewrite_script)
1501 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
1502 if test $gnu_ld = yes; then
1503 AC_DEFINE(HAVE_GNU_LD)
1505 if test $gnu_as = yes; then
1506 AC_DEFINE(HAVE_GNU_AS)
1508 if test $elf = yes; then
1514 if test $shared = default; then
1515 if test $gnu_ld = yes; then
1518 # For now we do not assume shared libs are available. In future more
1519 # tests might become available.
1524 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
1526 cat > conftest.c <<EOF
1527 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
1528 # error PIC is default.
1531 if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
1535 AC_SUBST(pic_default)
1540 AC_SUBST(static_nss)
1541 AC_SUBST(nopic_initfini)
1546 *door*) linux_doors=yes ;;
1547 *) linux_doors=no ;;
1549 AC_SUBST(linux_doors)
1551 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
1554 config_makefile=Makefile
1557 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
1558 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
1562 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [
1563 case $CONFIG_FILES in *config.make*)
1564 echo "$config_vars" >> config.make;;
1566 test -d bits || mkdir bits], [config_vars='$config_vars'])