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)
568 if test -n "$critic_missing"; then
570 *** Some critical program is missing or too old.
571 *** Check the INSTALL file for required versions.])
575 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
576 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
577 [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], MSGFMT=: aux_missing=t)
578 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
579 [GNU texinfo.* \([0-9][0-9.]*\)],
580 [4.*], MAKEINFO=: aux_missing=t)
581 AC_CHECK_PROG_VER(SED, gsed sed, --version,
582 [GNU sed version \([0-9]*\.[0-9.]*\)],
583 [3.0[2-9]*|3.[1-9]*|[4-9]*], SED=: aux_missing=t)
587 if test $host != $build; then
588 AC_CHECK_PROGS(BUILD_CC, gcc cc)
590 AC_SUBST(cross_compiling)
593 AC_CHECK_TOOL(MIG, mig)
595 # Accept binutils 2.10.1 or newer (and also any ia64 2.9 version)
596 # XXX Commented out because it filters out too many good versions.
598 # AC_CHECK_PROG_VER(AS, $AS, --version,
599 # [GNU assembler.* \([0-9]*\.[0-9.]*\(-ia64-[0-9]*\)*\)],
600 # [2.10.[1-9]* | 2.1[1-9]* | 2.9-ia64-*], AS=: critic_missing=t)
602 test -n "$aux_missing" && AC_MSG_WARN([
603 *** An auxiliary program is missing or too old;
604 *** some features will be disabled.
605 *** Check the INSTALL file for required versions.])
607 # glibcbug.in wants to know the compiler version.
608 CCVERSION=`$CC -v 2>&1 | sed -n 's/gcc version //p'`
611 # if using special system headers, find out the compiler's sekrit
612 # header directory and add that to the list. NOTE: Only does the right
613 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
614 if test -n "$sysheaders"; then
615 ccheaders=`$CC -print-file-name=include`
616 SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders"
618 AC_SUBST(SYSINCLUDES)
620 # check if ranlib is necessary
621 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
622 cat > conftest.c <<EOF
627 $CC $CFLAGS -c conftest.c
628 $AR cr conftest.a conftest.c
629 cp conftest.a conftest2.a
631 if cmp -s conftest.a conftest2.a; then
632 libc_cv_ranlib_necessary=no
634 libc_cv_ranlib_necessary=yes
637 if test "$libc_cv_ranlib_necessary" = no; then
641 # Test if LD_LIBRARY_PATH contains the notation for the current directory
642 # since this would lead to problems installing/building glibc.
643 # LD_LIBRARY_PATH contains the current directory if one of the following
645 # - one of the terminals (":" and ";") is the first or last sign
646 # - two terminals occur directly after each other
647 # - the path contains an element with a dot in it
648 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
650 case ${LD_LIBRARY_PATH} in
651 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
652 ld_library_path_setting="contains current directory"
655 ld_library_path_setting="ok"
659 AC_MSG_RESULT($ld_library_path_setting)
660 if test "$ld_library_path_setting" != "ok"; then
662 *** LD_LIBRARY_PATH shouldn't contain the current directory when
663 *** building glibc. Please change the environment variable
664 *** and run configure again.])
667 AC_PATH_PROG(BASH, bash, no)
668 if test "$BASH" != no &&
669 $BASH -c 'test "$BASH_VERSINFO" \
670 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
671 libc_cv_have_bash2=yes
673 libc_cv_have_bash2=no
675 AC_SUBST(libc_cv_have_bash2)
677 dnl We need a ksh compatible shell for tzselect.
678 if test "$BASH" = no; then
679 AC_PATH_PROG(KSH, ksh, no)
680 if test "$KSH" = no; then
690 AC_SUBST(libc_cv_have_ksh)
693 AC_PATH_PROG(PERL, perl, no)
694 if test "$PERL" != no &&
695 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
698 AC_PATH_PROG(INSTALL_INFO, install-info, no,
699 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
700 if test "$INSTALL_INFO" != "no"; then
701 AC_CACHE_CHECK(for old Debian install-info, libc_cv_old_debian_install_info,
703 # There is a hard ^_ on the next line. I am open to better ideas.
705 echo 'File: dir Node: Top This is the top of the INFO tree'
706 echo '* Menu:') >conftest.d/dir
707 (echo 'INFO-DIR-SECTION i-d-s works'
708 echo 'START-INFO-DIR-ENTRY'
709 echo '* Prog: (prog). Program.'
710 echo 'END-INFO-DIR-ENTRY') >conftest.d/prog.info
711 if $INSTALL_INFO --info-dir=conftest.d conftest.d/prog.info >&AC_FD_CC 2>&1
713 if grep -s 'i-d-s works' conftest.d/dir >/dev/null
714 then libc_cv_old_debian_install_info=no
715 else libc_cv_old_debian_install_info=yes
717 else libc_cv_old_debian_install_info=no testfailed=t
720 if test -n "$testfailed"
721 then AC_MSG_WARN([install-info errored out, check config.log])
723 OLD_DEBIAN_INSTALL_INFO=$libc_cv_old_debian_install_info
725 AC_SUBST(OLD_DEBIAN_INSTALL_INFO)
727 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
729 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
730 echo '#include <stddef.h>
731 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
732 if eval "$ac_cpp conftest.c 2>/dev/null" \
733 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
734 libc_cv_signed_size_t=no
736 libc_cv_signed_size_t=yes
739 if test $libc_cv_signed_size_t = yes; then
740 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
741 cat >> confdefs.h <<\EOF
743 #define __SIZE_TYPE__ unsigned
747 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
749 [#define __need_size_t
750 #define __need_wchar_t
753 #include <stddef.h>], [size_t size; wchar_t wchar;
755 #error stddef.h ignored __need_*
757 if (&size == NULL || &wchar == NULL) abort ();],
758 libc_cv_friendly_stddef=yes,
759 libc_cv_friendly_stddef=no)])
760 if test $libc_cv_friendly_stddef = yes; then
761 config_vars="$config_vars
762 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
765 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
766 libc_cv_need_minus_P, [dnl
767 cat > conftest.S <<EOF
768 #include "confdefs.h"
769 /* Nothing whatsoever. */
771 if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then
772 libc_cv_need_minus_P=no
774 libc_cv_need_minus_P=yes
777 if test $libc_cv_need_minus_P = yes; then
778 config_vars="$config_vars
779 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
782 AC_MSG_CHECKING(whether .text pseudo-op must be used)
783 AC_CACHE_VAL(libc_cv_dot_text, [dnl
784 cat > conftest.s <<EOF
788 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
789 libc_cv_dot_text=.text
792 if test -z "$libc_cv_dot_text"; then
798 AC_CACHE_CHECK(for assembler global-symbol directive,
799 libc_cv_asm_global_directive, [dnl
800 libc_cv_asm_global_directive=UNKNOWN
801 for ac_globl in .globl .global .EXPORT; do
802 cat > conftest.s <<EOF
807 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
808 libc_cv_asm_global_directive=${ac_globl}
811 test $libc_cv_asm_global_directive != UNKNOWN && break
813 if test $libc_cv_asm_global_directive = UNKNOWN; then
814 AC_MSG_ERROR(cannot determine asm global directive)
816 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
819 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
820 cat > conftest.s <<EOF
823 .set glibc_conftest_frobozz,foo
824 $libc_cv_asm_global_directive glibc_conftest_frobozz
826 # The alpha-dec-osf1 assembler gives only a warning for `.set'
827 # (but it doesn't work), so we must do a linking check to be sure.
828 cat > conftest1.c <<\EOF
829 extern int glibc_conftest_frobozz;
830 main () { printf ("%d\n", glibc_conftest_frobozz); }
832 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
833 -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then
834 libc_cv_asm_set_directive=yes
836 libc_cv_asm_set_directive=no
839 if test $libc_cv_asm_set_directive = yes; then
840 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
843 # The Aix ld uses global .symbol_names instead of symbol_names.
846 AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
849 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
850 [cat > conftest.s <<EOF
853 .symver _sym,sym@VERS
855 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
856 libc_cv_asm_symver_directive=yes
858 libc_cv_asm_symver_directive=no
861 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
862 if test $libc_cv_asm_symver_directive = yes; then
863 cat > conftest.s <<EOF
866 .symver _sym,sym@VERS
868 cat > conftest.map <<EOF
877 if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then
878 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
879 -nostartfiles -nostdlib
880 -Wl,--version-script,conftest.map
883 libc_cv_ld_version_script_option=yes
885 libc_cv_ld_version_script_option=no
888 libc_cv_ld_version_script_option=no
891 libc_cv_ld_version_script_option=no
894 if test $shared != no &&
895 test $libc_cv_asm_symver_directive = yes &&
896 test $libc_cv_ld_version_script_option = yes &&
897 test $enable_versioning = yes; then
899 AC_DEFINE(DO_VERSIONING)
905 if test $shared != no && test $VERSIONING = no; then
907 *** WARNING: You should not compile GNU libc without versioning. Not using
908 *** versioning will introduce incompatibilities so that old binaries
909 *** will not run anymore.
910 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
912 if test $elf = yes; then
913 AC_CACHE_CHECK(for .previous assembler directive,
914 libc_cv_asm_previous_directive, [dnl
915 cat > conftest.s <<EOF
919 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
920 libc_cv_asm_previous_directive=yes
922 libc_cv_asm_previous_directive=no
925 if test $libc_cv_asm_previous_directive = yes; then
926 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
928 AC_CACHE_CHECK(for .popsection assembler directive,
929 libc_cv_asm_popsection_directive, [dnl
930 cat > conftest.s <<EOF
931 .pushsection foo_section
934 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
935 libc_cv_asm_popsection_directive=yes
937 libc_cv_asm_popsection_directive=no
940 if test $libc_cv_asm_popsection_directive = yes; then
941 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
944 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
945 libc_cv_asm_protected_directive, [dnl
946 cat > conftest.s <<EOF
952 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
953 libc_cv_asm_protected_directive=yes
955 libc_cv_asm_protected_directive=no
958 AC_SUBST(libc_cv_asm_protected_directive)
960 AC_CACHE_CHECK(for -z nodelete option,
961 libc_cv_z_nodelete, [dnl
962 cat > conftest.c <<EOF
963 int _start (void) { return 42; }
965 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodelete 1>&AC_FD_CC])
967 libc_cv_z_nodelete=yes
969 libc_cv_z_nodelete=no
972 AC_SUBST(libc_cv_z_nodelete)
974 AC_CACHE_CHECK(for -z nodlopen option,
975 libc_cv_z_nodlopen, [dnl
976 cat > conftest.c <<EOF
977 int _start (void) { return 42; }
979 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,nodlopen 1>&AC_FD_CC])
981 libc_cv_z_nodlopen=yes
983 libc_cv_z_nodlopen=no
986 AC_SUBST(libc_cv_z_nodlopen)
988 AC_CACHE_CHECK(for -z initfirst option,
989 libc_cv_z_initfirst, [dnl
990 cat > conftest.c <<EOF
991 int _start (void) { return 42; }
993 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,--enable-new-dtags,-z,initfirst 1>&AC_FD_CC])
995 libc_cv_z_initfirst=yes
997 libc_cv_z_initfirst=no
1000 AC_SUBST(libc_cv_z_initfirst)
1002 AC_CACHE_CHECK(for -Bgroup option,
1003 libc_cv_Bgroup, [dnl
1004 cat > conftest.c <<EOF
1005 int _start (void) { return 42; }
1007 if AC_TRY_COMMAND([${CC-cc} -shared -o conftest.so conftest.c -Wl,-Bgroup -nostdlib 1>&AC_FD_CC])
1014 AC_SUBST(libc_cv_Bgroup)
1017 if test $elf != yes; then
1018 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1019 [AC_TRY_COMPILE(, [asm (".section .init");
1020 asm (".section .fini");
1021 asm ("${libc_cv_dot_text}");],
1022 libc_cv_have_initfini=yes,
1023 libc_cv_have_initfini=no)])
1024 AC_SUBST(libc_cv_have_initfini)dnl
1025 if test $libc_cv_have_initfini = yes; then
1026 AC_DEFINE(HAVE_INITFINI)
1030 if test $elf = yes -a $gnu_ld = yes; then
1031 AC_CACHE_CHECK(whether cc puts quotes around section names,
1032 libc_cv_have_section_quotes,
1033 [cat > conftest.c <<EOF
1034 static const int foo
1035 __attribute__ ((section ("bar"))) = 1;
1037 if ${CC-cc} -S conftest.c -o conftest.s; then
1038 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1039 libc_cv_have_section_quotes=yes
1041 libc_cv_have_section_quotes=no
1044 libc_cv_have_section_quotes=unknown
1048 if test $libc_cv_have_section_quotes = yes; then
1049 AC_DEFINE(HAVE_SECTION_QUOTES)
1053 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1054 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1055 [cat > conftest.$ac_ext <<EOF
1056 dnl This sometimes fails to find confdefs.h, for some reason.
1057 dnl [#]line __oline__ "[$]0"
1058 [#]line __oline__ "configure"
1059 #include "confdefs.h"
1060 void underscore_test(void) {
1063 if AC_TRY_EVAL(ac_compile); then
1064 if grep _underscore_test conftest* >/dev/null; then
1065 ifelse([$1], , :, [rm -f conftest*
1068 ifelse([$2], , , [rm -f conftest*
1072 echo "configure: failed program was:" >&AC_FD_CC
1073 cat conftest.$ac_ext >&AC_FD_CC
1074 ifelse([$2], , , [rm -f conftest*
1079 if test $elf = yes; then
1080 libc_cv_asm_underscores=no
1082 if test $ac_cv_prog_cc_works = yes; then
1083 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1084 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1085 libc_cv_asm_underscores=yes,
1086 libc_cv_asm_underscores=no)])
1088 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1089 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1090 libc_cv_asm_underscores=no)])
1093 if test $libc_cv_asm_underscores = no; then
1094 AC_DEFINE(NO_UNDERSCORES)
1097 if test $elf = yes; then
1098 libc_cv_weak_symbols=yes
1101 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1103 cat > conftest.s <<EOF
1105 ${libc_cv_asm_global_directive} foo
1108 .weak bar; bar = foo
1110 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1111 libc_cv_asm_weak_directive=yes
1113 libc_cv_asm_weak_directive=no
1117 if test $libc_cv_asm_weak_directive = no; then
1118 AC_CACHE_CHECK(for assembler .weakext directive,
1119 libc_cv_asm_weakext_directive,
1121 cat > conftest.s <<EOF
1123 ${libc_cv_asm_global_directive} foo
1127 ${libc_cv_asm_global_directive} baz
1130 if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then
1131 libc_cv_asm_weakext_directive=yes
1133 libc_cv_asm_weakext_directive=no
1139 if test $libc_cv_asm_weak_directive = yes; then
1140 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1141 elif test $libc_cv_asm_weakext_directive = yes; then
1142 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1145 dnl The standard hppa assembler uses `;' to start comments and `!'
1146 dnl as a line separator. CRIS uses `;' to start comments and `@' for
1148 case "${host_cpu}-${host_os}" in
1150 libc_cv_asm_line_sep='@'
1151 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1154 AC_CACHE_CHECK(for assembler line separator,
1155 libc_cv_asm_line_sep, [dnl
1156 cat > conftest.s <<EOF
1159 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
1160 libc_cv_asm_line_sep='!'
1162 if test -z "$enable_hacker_mode"; then
1163 echo "*** You need a newer assembler to compile glibc"
1167 libc_cv_asm_line_sep=';'
1170 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
1174 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1175 cat > conftest.c <<\EOF
1180 dnl No \ in command here because it ends up inside ''.
1181 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1182 -nostdlib -nostartfiles -Wl,--no-whole-archive
1183 -o conftest conftest.c 1>&AC_FD_CC]); then
1184 libc_cv_ld_no_whole_archive=yes
1186 libc_cv_ld_no_whole_archive=no
1189 if test $libc_cv_ld_no_whole_archive = yes; then
1190 no_whole_archive=-Wl,--no-whole-archive
1192 AC_SUBST(no_whole_archive)dnl
1194 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1195 cat > conftest.c <<\EOF
1200 dnl No \ in command here because it ends up inside ''.
1201 if AC_TRY_COMMAND([${CC-cc} $CFLAGS
1202 -nostdlib -nostartfiles -fexceptions
1203 -o conftest conftest.c 1>&AC_FD_CC]); then
1204 libc_cv_gcc_exceptions=yes
1206 libc_cv_gcc_exceptions=no
1209 if test $libc_cv_gcc_exceptions = yes; then
1210 exceptions=-fexceptions
1212 AC_SUBST(exceptions)dnl
1214 if test "$base_machine" = alpha ; then
1215 AC_CACHE_CHECK(for function ..ng prefix, libc_cv_gcc_alpha_ng_prefix, [dnl
1216 cat > conftest.c <<\EOF
1220 if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null]);
1222 libc_cv_gcc_alpha_ng_prefix=yes
1224 libc_cv_gcc_alpha_ng_prefix=no
1227 if test $libc_cv_gcc_alpha_ng_prefix = yes ; then
1228 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "$")
1230 AC_DEFINE(ASM_ALPHA_NG_SYMBOL_PREFIX, "")
1234 if test "$host_cpu" = powerpc ; then
1235 # Check for a bug present in at least versions 2.8.x of GCC
1236 # and versions 1.0.x of EGCS.
1237 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1238 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1239 libc_cv_c_asmcr0_bug='no',
1240 libc_cv_c_asmcr0_bug='yes')])
1241 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1242 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1246 AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info,
1247 [cat > conftest.c <<EOF
1248 #line __oline__ "configure"
1249 static char __EH_FRAME_BEGIN__[];
1252 #ifdef CHECK__register_frame
1253 __register_frame (__EH_FRAME_BEGIN__);
1254 __deregister_frame (__EH_FRAME_BEGIN__);
1256 #ifdef CHECK__register_frame_info
1257 __register_frame_info (__EH_FRAME_BEGIN__);
1258 __deregister_frame_info (__EH_FRAME_BEGIN__);
1263 /* FIXME: this is fragile. */
1273 dnl No \ in command here because it ends up inside ''.
1274 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame_info
1275 -nostdlib -nostartfiles
1276 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1277 libc_cv_gcc_dwarf2_unwind_info=static
1279 libc_cv_gcc_dwarf2_unwind_info=no
1281 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
1282 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -DCHECK__register_frame
1283 -nostdlib -nostartfiles
1284 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1285 libc_cv_gcc_dwarf2_unwind_info=yes
1287 libc_cv_gcc_dwarf2_unwind_info=no
1291 case $libc_cv_gcc_dwarf2_unwind_info in
1293 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1296 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO)
1297 AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC)
1301 dnl Check whether compiler understands __builtin_expect.
1302 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1303 [cat > conftest.c <<EOF
1304 #line __oline__ "configure"
1307 a = __builtin_expect (a, 10);
1308 return a == 10 ? 0 : 1;
1311 dnl No \ in command here because it ends up inside ''.
1312 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1313 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1314 libc_cv_gcc_builtin_expect=yes
1316 libc_cv_gcc_builtin_expect=no
1319 if test "$libc_cv_gcc_builtin_expect" = yes; then
1320 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1323 dnl Check whether the compiler supports subtraction of local labels.
1324 AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
1325 [cat > conftest.c <<EOF
1327 #line __oline__ "configure"
1330 static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
1331 void *p = &&l1 + ar[a];
1340 dnl No \ in command here because it ends up inside ''.
1341 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
1342 -o conftest conftest.c -lgcc >&AC_FD_CC]); then
1343 libc_cv_gcc_subtract_local_labels=yes
1345 libc_cv_gcc_subtract_local_labels=no
1348 if test "$libc_cv_gcc_subtract_local_labels" = yes; then
1349 AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
1352 dnl Check whether we have the gd library available.
1353 AC_MSG_CHECKING(for libgd)
1354 if test "$with_gd" != "no"; then
1355 old_CFLAGS="$CFLAGS"
1356 CFLAGS="$CFLAGS $libgd_include"
1357 old_LDFLAGS="$LDFLAGS"
1358 LDFLAGS="$LDFLAGS $libgd_ldflags"
1360 LIBS="$LIBS -lgd -lpng -lz -lm"
1361 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
1362 CFLAGS="$old_CFLAGS"
1363 LDFLAGS="$old_LDFLAGS"
1368 AC_MSG_RESULT($LIBGD)
1371 dnl check for the size of 'long double'.
1372 AC_CHECK_SIZEOF(long double, 0)
1373 sizeof_long_double=$ac_cv_sizeof_long_double
1374 AC_SUBST(sizeof_long_double)
1376 ### End of automated tests.
1377 ### Now run sysdeps configure fragments.
1379 # sysdeps configure fragments may set these with files to be linked below.
1383 # They also can set these variables.
1385 ldd_rewrite_script=no
1387 # Iterate over all the sysdep directories we will use, running their
1388 # configure fragments, and looking for a uname implementation.
1390 for dir in $sysnames; do
1393 *) dest=$srcdir/$dir ;;
1395 if test -r $dest/configure; then
1396 AC_MSG_RESULT(running configure fragment for $dest)
1400 if test -z "$uname"; then
1401 if test -r $dest/uname.c ||
1402 test -r $dest/uname.S ||
1403 { test -r $dest/syscalls.list &&
1404 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
1411 AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`)
1413 # If we will use the generic uname implementation, we must figure out what
1414 # it will say by examining the system, and write the results in config-name.h.
1415 if test "$uname" = "sysdeps/generic"; then
1418 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
1420 if test $uname_sysname != $config_os; then
1421 config_release=`echo $config_os | sed s/$uname_sysname//`
1424 AC_DEFUN(LIBC_KERNEL_ID, [dnl
1425 if test -r /vmunix; then
1426 kernel_id=`strings /vmunix | grep UNIX`
1427 elif test -r /dynix; then
1428 kernel_id=`strings /dynix | grep DYNIX`
1434 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
1435 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1437 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
1439 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
1440 != x$config_release; then
1441 # The configuration release is a substring of the kernel release.
1442 libc_cv_uname_release=$kernel_release
1443 elif test x$config_release != x; then
1444 libc_cv_uname_release=$config_release
1445 elif test x$kernel_release != x; then
1446 libc_cv_uname_release=$kernel_release
1448 libc_cv_uname_release=unknown
1450 uname_release="$libc_cv_uname_release"
1452 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
1453 AC_REQUIRE([LIBC_KERNEL_ID])dnl
1455 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
1457 if test -n "$kernel_version"; then
1458 libc_cv_uname_version="$kernel_version"
1460 libc_cv_uname_version=unknown
1462 uname_version="$libc_cv_uname_version"
1464 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
1465 config_uname=config-name.h:config-name.in
1467 # For non-generic uname, we don't need to create config-name.h at all.
1471 AC_MSG_CHECKING(stdio selection)
1474 libio) AC_DEFINE(USE_IN_LIBIO) ;;
1475 default) stdio=stdio ;;
1477 AC_MSG_RESULT($stdio)
1479 # Test for old glibc 2.0.x headers so that they can be removed properly
1480 # Search only in includedir.
1481 AC_MSG_CHECKING(for old glibc 2.0.x headers)
1482 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
1484 old_glibc_headers=yes
1486 old_glibc_headers=no
1488 AC_MSG_RESULT($old_glibc_headers)
1489 if test ${old_glibc_headers} = yes; then
1490 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
1491 AC_MSG_WARN(*** be removed.)
1493 AC_SUBST(old_glibc_headers)
1495 AC_SUBST(libc_cv_slibdir)
1496 AC_SUBST(libc_cv_localedir)
1497 AC_SUBST(libc_cv_sysconfdir)
1498 AC_SUBST(libc_cv_rootsbindir)
1500 AC_SUBST(use_ldconfig)
1501 AC_SUBST(ldd_rewrite_script)
1503 AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf)
1504 if test $gnu_ld = yes; then
1505 AC_DEFINE(HAVE_GNU_LD)
1507 if test $gnu_as = yes; then
1508 AC_DEFINE(HAVE_GNU_AS)
1510 if test $elf = yes; then
1516 if test $shared = default; then
1517 if test $gnu_ld = yes; then
1520 # For now we do not assume shared libs are available. In future more
1521 # tests might become available.
1526 AC_CACHE_CHECK([whether -fPIC is default], pic_default,
1528 cat > conftest.c <<EOF
1529 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
1530 # error PIC is default.
1533 if eval "${CC-cc} -S conftest.c 2>&AC_FD_CC 1>&AC_FD_CC"; then
1537 AC_SUBST(pic_default)
1542 AC_SUBST(static_nss)
1543 AC_SUBST(nopic_initfini)
1548 *door*) linux_doors=yes ;;
1549 *) linux_doors=no ;;
1551 AC_SUBST(linux_doors)
1553 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
1556 config_makefile=Makefile
1559 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
1560 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
1564 AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, [
1565 case $CONFIG_FILES in *config.make*)
1566 echo "$config_vars" >> config.make;;
1568 test -d bits || mkdir bits], [config_vars='$config_vars'])