| blob | 4584afe6053b00074f5a94b84655b50c3bb14351 |
1 dnl Process this file with autoconf to produce a configure script.
2 AC_REVISION([$CVSid$])
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 AC_CANONICAL_HOST
11 AC_PROG_CC
12 if test $host != $build; then
13 AC_CHECK_PROGS(BUILD_CC, gcc cc)
14 fi
15 AC_SUBST(cross_compiling)
16 AC_PROG_CPP
17 # We need the C++ compiler only for testing.
18 AC_PROG_CXX
20 if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then
21 AC_MSG_ERROR([you must configure in a separate build directory])
22 fi
24 # This will get text that should go into config.make.
25 config_vars=
27 # Check for a --with-gd argument and set libgd-LDFLAGS in config.make.
28 AC_ARG_WITH([gd],
29 AC_HELP_STRING([--with-gd=DIR],
30 [find libgd include dir and library with prefix DIR]),
31 [dnl
32 case "$with_gd" in
33 yes|''|no) ;;
34 *) libgd_include="-I$withval/include"
35 libgd_ldflags="-L$withval/lib" ;;
36 esac
37 ])
38 AC_ARG_WITH([gd-include],
39 AC_HELP_STRING([--with-gd-include=DIR],
40 [find libgd include files in DIR]),
41 [dnl
42 case "$with_gd_include" in
43 ''|no) ;;
44 *) libgd_include="-I$withval" ;;
45 esac
46 ])
47 AC_ARG_WITH([gd-lib],
48 AC_HELP_STRING([--with-gd-lib=DIR],
49 [find libgd library files in DIR]),
50 [dnl
51 case "$with_gd_lib" in
52 ''|no) ;;
53 *) libgd_ldflags="-L$withval" ;;
54 esac
55 ])
57 if test -n "$libgd_include"; then
58 config_vars="$config_vars
59 CFLAGS-memusagestat.c = $libgd_include"
60 fi
61 if test -n "$libgd_ldflags"; then
62 config_vars="$config_vars
63 libgd-LDFLAGS = $libgd_ldflags"
64 fi
66 dnl Arguments to specify presence of other packages/features.
67 AC_ARG_WITH([fp],
68 AC_HELP_STRING([--with-fp],
69 [if using floating-point hardware @<:@default=yes@:>@]),
70 [with_fp=$withval],
71 [with_fp=yes])
72 AC_SUBST(with_fp)
73 AC_ARG_WITH([binutils],
74 AC_HELP_STRING([--with-binutils=PATH],
75 [specify location of binutils (as and ld)]),
76 [path_binutils=$withval],
77 [path_binutils=''])
78 AC_ARG_WITH([elf],
79 AC_HELP_STRING([--with-elf],
80 [if using the ELF object format]),
81 [elf=$withval],
82 [elf=no])
83 AC_ARG_WITH([selinux],
84 AC_HELP_STRING([--with-selinux],
85 [if building with SELinux support]),
86 [with_selinux=$withval],
87 [with_selinux=auto])
88 AC_ARG_WITH([xcoff],
89 AC_HELP_STRING([--with-xcoff],
90 [if using the XCOFF object format]),
91 [xcoff=$withval],
92 [xcoff=no])
93 AC_ARG_WITH([cvs],
94 AC_HELP_STRING([--without-cvs],
95 [if CVS should not be used]),
96 [with_cvs=$withval],
97 [with_cvs=yes])
98 if test "$with_cvs" = yes; then
99 if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null
100 then
101 with_cvs=no
102 fi
103 fi
104 AC_SUBST(with_cvs)
106 AC_ARG_WITH([headers],
107 AC_HELP_STRING([--with-headers=PATH],
108 [location of system headers to use
109 (for example /usr/src/linux/include)
110 @<:@default=compiler default@:>@]),
111 [sysheaders=$withval],
112 [sysheaders=''])
114 AC_ARG_ENABLE([sanity-checks],
115 AC_HELP_STRING([--disable-sanity-checks],
116 [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]),
117 [enable_sanity=$enableval],
118 [enable_sanity=yes])
120 AC_SUBST(enable_check_abi)
121 AC_ARG_ENABLE([check-abi],
122 AC_HELP_STRING([--enable-check-abi],
123 [do "make check-abi" in "make check" (no/warn/yes)
124 @<:@default=no@:>@]),
125 [enable_check_abi=$enableval],
126 [enable_check_abi=no])
128 dnl Arguments to enable or disable building the static, shared, profiled,
129 dnl and -fomit-frame-pointer libraries.
130 dnl I've disabled this for now since we cannot build glibc without static
131 dnl libraries built in the moment.
132 dnl AC_ARG_ENABLE([static],
133 dnl AC_HELP_STRING([--enable-static],
134 dnl [build static library @<:@default=yes@:>@]),
135 dnl [static=$enableval],
136 dnl [static=yes])
137 static=yes
138 AC_ARG_ENABLE([shared],
139 AC_HELP_STRING([--enable-shared],
140 [build shared library @<:@default=yes if GNU ld & ELF@:>@]),
141 [shared=$enableval],
142 [shared=default])
143 AC_ARG_ENABLE([profile],
144 AC_HELP_STRING([--enable-profile],
145 [build profiled library @<:@default=no@:>@]),
146 [profile=$enableval],
147 [profile=no])
148 AC_ARG_ENABLE([omitfp],
149 AC_HELP_STRING([--enable-omitfp],
150 [build undebuggable optimized library @<:@default=no@:>@]),
151 [omitfp=$enableval],
152 [omitfp=no])
153 AC_ARG_ENABLE([bounded],
154 AC_HELP_STRING([--enable-bounded],
155 [build with runtime bounds checking @<:@default=no@:>@]),
156 [bounded=$enableval],
157 [bounded=no])
158 AC_ARG_ENABLE([versioning],
159 AC_HELP_STRING([--disable-versioning],
160 [do not include versioning information in the library objects @<:@default=yes if supported@:>@]),
161 [enable_versioning=$enableval],
162 [enable_versioning=yes])
164 AC_ARG_ENABLE([oldest-abi],
165 AC_HELP_STRING([--enable-oldest-abi=ABI],
166 [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]),
167 [oldest_abi=$enableval],
168 [oldest_abi=no])
169 if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
170 oldest_abi=default
171 else
172 AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
173 fi
174 AC_SUBST(oldest_abi)
176 AC_ARG_ENABLE([stackguard-randomization],
177 AC_HELP_STRING([--enable-stackguard-randomization],
178 [initialize __stack_chk_guard canary with a random number at program start]),
179 [enable_stackguard_randomize=$enableval],
180 [enable_stackguard_randomize=no])
181 if test "$enable_stackguard_randomize" = yes; then
182 AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE)
183 fi
185 dnl Generic infrastructure for drop-in additions to libc.
186 AC_ARG_ENABLE([add-ons],
187 AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@],
188 [configure and build add-ons in DIR1,DIR2,...
189 search for add-ons if no parameter given]),
190 , [enable_add_ons=yes])
192 dnl Let the user avoid using TLS. Don't know why but...
193 AC_ARG_WITH([tls],
194 AC_HELP_STRING([--with-tls],
195 [enable support for TLS]),
196 [usetls=$withval],
197 [usetls=yes])
199 AC_ARG_WITH([__thread],
200 AC_HELP_STRING([--without-__thread],
201 [do not use TLS features even when supporting them]),
202 [use__thread=$withval],
203 [use__thread=yes])
205 AC_ARG_ENABLE([hidden-plt],
206 AC_HELP_STRING([--disable-hidden-plt],
207 [do not hide internal function calls to avoid PLT]),
208 [hidden=$enableval],
209 [hidden=yes])
210 if test "x$hidden" = xno; then
211 AC_DEFINE(NO_HIDDEN)
212 fi
214 AC_ARG_ENABLE([bind-now],
215 AC_HELP_STRING([--enable-bind-now],
216 [disable lazy relocations in DSOs]),
217 [bindnow=$enableval],
218 [bindnow=no])
219 AC_SUBST(bindnow)
221 dnl On some platforms we cannot use dynamic loading. We must provide
222 dnl static NSS modules.
223 AC_ARG_ENABLE([static-nss],
224 AC_HELP_STRING([--enable-static-nss],
225 [build static NSS modules @<:@default=no@:>@]),
226 [static_nss=$enableval],
227 [static_nss=no])
228 dnl Enable static NSS also if we build no shared objects.
229 if test x"$static_nss" = xyes || test x"$shared" = xno; then
230 static_nss=yes
231 AC_DEFINE(DO_STATIC_NSS)
232 fi
234 AC_ARG_ENABLE([force-install],
235 AC_HELP_STRING([--disable-force-install],
236 [don't force installation of files from this package, even if they are older than the installed files]),
237 [force_install=$enableval],
238 [force_install=yes])
239 AC_SUBST(force_install)
241 dnl On some platforms we allow dropping compatibility with all kernel
242 dnl versions.
243 AC_ARG_ENABLE([kernel],
244 AC_HELP_STRING([--enable-kernel=VERSION],
245 [compile for compatibility with kernel not older than VERSION]),
246 [minimum_kernel=$enableval],
247 [])
248 dnl Prevent unreasonable values.
249 if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then
250 # Better nothing than this.
251 minimum_kernel=""
252 else
253 if test "$minimum_kernel" = current; then
254 minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel=
255 fi
256 fi
258 dnl For the development we sometimes want gcc to issue even more warnings.
259 dnl This is not the default since many of the extra warnings are not
260 dnl appropriate.
261 AC_ARG_ENABLE([all-warnings],
262 AC_HELP_STRING([--enable-all-warnings],
263 [enable all useful warnings gcc can issue]),
264 [all_warnings=$enableval],
265 [])
266 AC_SUBST(all_warnings)
268 AC_ARG_ENABLE([multi-arch],
269 AC_HELP_STRING([--enable-multi-arch],
270 [enable single DSO with optimizations for multiple architectures]),
271 [multi_arch=$enableval],
272 [multi_arch=no])
273 if test x"$multi_arch" = xyes; then
274 AC_DEFINE(USE_MULTIARCH)
275 multi_arch_d=/multiarch
276 fi
277 AC_SUBST(multi_arch)
279 AC_ARG_ENABLE([experimental-malloc],
280 AC_HELP_STRING([--enable-experimental-malloc],
281 [enable experimental malloc features]),
282 [experimental_malloc=$enableval],
283 [])
284 AC_SUBST(experimental_malloc)
286 AC_ARG_ENABLE([nss-crypt],
287 AC_HELP_STRING([--enable-nss-crypt],
288 [enable libcrypt to use nss]),
289 [nss_crypt=$enableval],
290 [nss_crypt=no])
291 if test x$nss_crypt = xyes; then
292 nss_includes=-I$(nss-config --includedir 2>/dev/null)
293 if test $? -ne 0; then
294 AC_MSG_ERROR([cannot find include directory with nss-config])
295 fi
296 old_CFLAGS="$CFLAGS"
297 CFLAGS="$CFLAGS $nss_includes"
298 AC_COMPILE_IFELSE([typedef int PRBool;
299 #include <hasht.h>
300 #include <nsslowhash.h>
301 void f (void) { NSSLOW_Init (); }],
302 libc_cv_nss_crypt=yes,
303 AC_MSG_ERROR([
304 cannot find NSS headers with lowlevel hash function interfaces]))
305 old_LIBS="$LIBS"
306 LIBS="$LIBS -lfreebl3"
307 AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool;
308 #include <hasht.h>
309 #include <nsslowhash.h>],
310 [NSSLOW_Init();])],
311 libc_cv_nss_crypt=yes,
312 AC_MSG_ERROR([
313 cannot link program using lowlevel NSS hash functions]))
314 CFLAGS="$old_CFLAGS"
315 LIBS="$old_LIBS"
316 else
317 libc_cv_nss_crypt=no
318 fi
319 AC_SUBST(libc_cv_nss_crypt)
321 # The way shlib-versions is used to generate soversions.mk uses a
322 # fairly simplistic model for name recognition that can't distinguish
323 # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
324 # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
325 # tell. This doesn't get used much beyond that, so it's fairly safe.
326 case "$host_os" in
327 linux*)
328 ;;
329 gnu*)
330 host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
331 ;;
332 esac
334 # We keep the original values in `$config_*' and never modify them, so we
335 # can write them unchanged into config.make. Everything else uses
336 # $machine, $vendor, and $os, and changes them whenever convenient.
337 config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os
339 # Don't allow vendor == "unknown"
340 test "$config_vendor" = unknown && config_vendor=
341 config_os="`echo $config_os | sed 's/^unknown-//'`"
343 # Some configurations imply other options.
344 case "$host_os" in
345 # i586-linuxaout is mangled into i586-pc-linux-gnuaout
346 linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*)
347 ;;
348 gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6*)
349 # These systems (almost) always use the ELF format.
350 elf=yes
351 ;;
352 aix*)
353 # These systems are always xcoff
354 xcoff=yes
355 elf=no
356 ;;
357 esac
359 # The configure fragment of an add-on port can modify these to supplement
360 # or override the table in the case statement below. No fragment should
361 # ever change the config_* variables, however.
362 machine=$config_machine
363 vendor=$config_vendor
364 os=$config_os
365 base_os=''
367 # config.guess on some IBM machines says `rs6000' instead of `powerpc'.
368 # Unify this here.
369 if test "$machine" = rs6000; then
370 machine="powerpc"
371 fi
373 # Braindead PowerPC box with absolutely no FPU.
374 case "$machine-$host_os" in
375 powerpc*-*soft)
376 with_fp=no
377 ;;
378 esac
380 submachine=
381 AC_ARG_WITH([cpu],
382 AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]),
383 [dnl
384 case "$withval" in
385 yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;;
386 no) ;;
387 *) submachine="$withval" ;;
388 esac
389 ])
391 # An add-on can set this when it wants to disable the sanity check below.
392 libc_config_ok=no
394 dnl Having this here, though empty, makes sure that if add-ons' fragments
395 dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then
396 dnl our AC_OUTPUT will actually use it.
397 AC_CONFIG_SUBDIRS()
399 case "$enable_add_ons" in
400 ''|no) add_ons= ;;
401 yes|'*')
402 add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
403 sed 's@/[[^/]]*$@@' | sort | uniq`
404 add_ons_automatic=yes
405 ;;
406 *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
407 add_ons_automatic=no ;;
408 esac
410 configured_add_ons=
411 add_ons_sfx=
412 add_ons_pfx=
413 if test x"$add_ons" != x; then
414 for f in $add_ons; do
415 # Some sanity checks
416 case "$f" in
417 crypt)
418 AC_MSG_ERROR([
419 *** It seems that you're using an old \`crypt' add-on. crypt is now
420 *** part of glibc and using the old add-on will not work with this
421 *** release. Start again with fresh sources and without the old
422 *** \`crypt' add-on.])
423 ;;
424 localedata)
425 AC_MSG_ERROR([
426 *** It seems that you're using an old \`localedata' add-on. localedata
427 *** is now part of glibc and using the old add-on will not work with
428 *** this release. Start again with fresh sources and without the old
429 *** \`localedata' add-on.])
430 ;;
431 esac
432 done
434 # Now source each add-on's configure fragment.
435 # The fragments can use $srcdir/$libc_add_on to find themselves,
436 # and test $add_ons_automatic to see if they were explicitly requested.
437 # A fragment can clear (or even change) $libc_add_on to affect
438 # whether it goes into the list to be actually used in the build.
439 use_add_ons=
440 for libc_add_on in $add_ons; do
441 # Test whether such a directory really exists.
442 # It can be absolute, or relative to $srcdir, or relative to the build dir.
443 case "$libc_add_on" in
444 /*)
445 libc_add_on_srcdir=$libc_add_on
446 ;;
447 *)
448 test -d "$srcdir/$libc_add_on" || {
449 if test -d "$libc_add_on"; then
450 libc_add_on="`pwd`/$libc_add_on"
451 else
452 AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist)
453 fi
454 }
455 libc_add_on_srcdir=$srcdir/$libc_add_on
456 ;;
457 esac
459 libc_add_on_frag=$libc_add_on_srcdir/configure
460 libc_add_on_canonical=
461 if test -r "$libc_add_on_frag"; then
462 AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on)
463 libc_add_on_canonical=unknown
464 libc_add_on_subdirs=
465 . "$libc_add_on_frag"
466 test -z "$libc_add_on" || {
467 configured_add_ons="$configured_add_ons $libc_add_on"
468 if test "x$libc_add_on_canonical" = xunknown; then
469 AC_MSG_ERROR(fragment must set \$libc_add_on_canonical)
470 fi
471 for d in $libc_add_on_subdirs; do
472 case "$libc_add_on" in
473 /*) subdir_srcdir="$libc_add_on" ;;
474 *) subdir_srcdir="\$(..)$libc_add_on" ;;
475 esac
476 case "$d" in
477 .)
478 d="${libc_add_on_canonical:-$libc_add_on}"
479 ;;
480 /*)
481 subdir_srcdir="$d"
482 ;;
483 *)
484 subdir_srcdir="$subdir_srcdir/$d"
485 ;;
486 esac
487 d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
488 add_on_subdirs="$add_on_subdirs $d"
489 test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
490 $d-srcdir = $subdir_srcdir"
491 done
492 }
493 fi
494 if test -n "$libc_add_on"; then
495 if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null`
496 then
497 AC_MSG_CHECKING(add-on $libc_add_on for preconfigure fragments)
498 for frag in $frags; do
499 name=`echo "$frag" | sed 's@/[[^/]]*$@@;s@^.*/@@'`
500 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
501 . "$frag"
502 done
503 AC_MSG_RESULT()
504 fi
505 use_add_ons="$use_add_ons $libc_add_on"
506 add_ons_pfx="$add_ons_pfx $libc_add_on/"
507 test -z "$libc_add_on_canonical" ||
508 add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
509 fi
510 done
511 # Use echo to strip excess whitespace.
512 add_ons="`echo $use_add_ons`"
513 fi
514 AC_SUBST(add_ons)
515 AC_SUBST(add_on_subdirs)
518 ###
519 ### I put this here to prevent those annoying emails from people who cannot
520 ### read and try to compile glibc on unsupported platforms. --drepper
521 ###
522 ### By using the undocumented --enable-hacker-mode option for configure
523 ### one can skip this test to make the configuration not fail for unsupported
524 ### platforms.
525 ###
526 if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
527 case "$machine-$host_os" in
528 *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*)
529 ;;
530 *)
531 echo "*** The GNU C library is currently not available for this platform."
532 echo "*** So far nobody cared to port it and if there is no volunteer it"
533 echo "*** might never happen. So, if you have interest to see glibc on"
534 echo "*** this platform visit"
535 echo "*** http://www.gnu.org/software/libc/porting.html"
536 echo "*** and join the group of porters"
537 exit 1
538 ;;
539 esac
540 fi
542 dnl We need to use [ and ] for other purposes for a while now.
543 changequote(,)dnl
544 # Expand the configuration machine name into a subdirectory by architecture
545 # type and particular chip. If an add-on configure fragment already set
546 # base_machine, we don't change it.
547 test -n "$base_machine" || case "$machine" in
548 a29k | am29000) base_machine=a29k machine=a29k ;;
549 c3[012]) base_machine=cx0 machine=cx0/c30 ;;
550 c4[04]) base_machine=cx0 machine=cx0/c40 ;;
551 i[34567]86) base_machine=i386 machine=i386/$machine ;;
552 ia64) base_machine=ia64 machine=ia64 ;;
553 m88???) base_machine=m88k machine=m88k/$machine ;;
554 m88k) base_machine=m88k machine=m88k/m88100 ;;
555 powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;;
556 powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;;
557 s390) base_machine=s390 machine=s390/s390-32 ;;
558 s390x) base_machine=s390 machine=s390/s390-64 ;;
559 sh3*) base_machine=sh machine=sh/sh3 ;;
560 sh4*) base_machine=sh machine=sh/sh4 ;;
561 sparc | sparcv[67])
562 base_machine=sparc machine=sparc/sparc32 ;;
563 sparcv8 | supersparc | hypersparc)
564 base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
565 sparcv8plus | sparcv8plusa | sparcv9)
566 base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
567 sparcv8plusb | sparcv9b)
568 base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;;
569 sparcv9v)
570 base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;;
571 sparcv9v2)
572 base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;;
573 sparc64)
574 base_machine=sparc machine=sparc/sparc64 ;;
575 sparc64b)
576 base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
577 sparc64v)
578 base_machine=sparc machine=sparc/sparc64/sparcv9v ;;
579 sparc64v2)
580 base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;;
581 *) base_machine=$machine ;;
582 esac
583 changequote([,])dnl
584 AC_SUBST(base_machine)
586 if test "$base_machine" = "i386"; then
587 AC_DEFINE(USE_REGPARMS)
588 fi
590 # Compute the list of sysdep directories for this configuration.
591 # This can take a while to compute.
592 sysdep_dir=$srcdir/sysdeps
593 AC_MSG_CHECKING(sysdep dirs)
594 dnl We need to use [ and ] for other purposes for a while now.
595 changequote(,)dnl
596 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
597 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
599 test "x$base_os" != x || case "$os" in
600 gnu*)
601 base_os=mach/hurd ;;
602 netbsd* | 386bsd* | freebsd* | bsdi*)
603 base_os=unix/bsd/bsd4.4 ;;
604 osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*)
605 base_os=unix/bsd ;;
606 sysv* | isc* | esix* | sco* | minix* | irix4* | linux*)
607 base_os=unix/sysv ;;
608 irix6*)
609 base_os=unix/sysv/irix6/$os ;;
610 solaris[2-9]*)
611 base_os=unix/sysv/sysv4 ;;
612 hpux*)
613 base_os=unix/sysv/hpux/$os ;;
614 aix4.3*)
615 base_os=unix/sysv/aix/aix4.3 ;;
616 none)
617 base_os=standalone ;;
618 esac
620 # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos.
621 tail=$os
622 ostry=$os
623 while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do
624 ostry="$ostry /$o"
625 tail=$o
626 done
627 o=`echo $tail | sed 's/[0-9]*$//'`
628 if test $o != $tail; then
629 ostry="$ostry /$o"
630 fi
631 # For linux-gnu, try linux-gnu, then linux.
632 o=`echo $tail | sed 's/-.*$//'`
633 if test $o != $tail; then
634 ostry="$ostry /$o"
635 fi
637 # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix.
638 base=
639 tail=$base_os
640 while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do
641 set $b
642 base="$base /$1"
643 tail="$2"
644 done
646 # For sparc/sparc32, try sparc/sparc32 and then sparc.
647 mach=
648 tail=$machine${submachine:+/$submachine}
649 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
650 set $m
651 # Prepend the machine's FPU directory unless --without-fp.
652 if test "$with_fp" = yes; then
653 mach="$mach /$1/fpu"
654 else
655 mach="$mach /$1/nofpu"
656 fi
657 mach="$mach /$1"
658 tail="$2"
659 done
661 dnl We are done with glob and regexp uses of [ and ]; return to autoconf.
662 changequote([,])dnl
664 # Find what sysdep directories exist.
665 sysnames_add_ons=
666 sysnames=
667 for b in $base ''; do
668 for m0 in $mach ''; do
669 for v in /$vendor ''; do
670 test "$v" = / && continue
671 for o in /$ostry ''; do
672 test "$o" = / && continue
673 for m in $multi_arch_d $mach ''; do
674 for d in $add_ons_pfx ''; do
675 for a in $add_ons_sfx ''; do
676 if test -n "$m0$m0sub$b$v$o$m$msub"; then
677 try_srcdir="${srcdir}/"
678 case "$d" in
679 /*) try_srcdir= ;;
680 esac
681 try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a"
682 test -n "$enable_debug_configure" &&
683 echo "$0 [DEBUG]: try $try" >&2
684 if test -d "$try_srcdir$try"; then
685 sysnames="$sysnames $try"
686 { test -n "$o" || test -n "$b"; } && os_used=t
687 { test -n "$m" || test -n "$m0"; } && machine_used=t
688 case x${m0:-$m} in
689 x*/$submachine) submachine_used=t ;;
690 esac
691 if test -n "$d"; then
692 case "$sysnames_add_ons" in
693 *" $d "*) ;;
694 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
695 esac
696 fi
697 fi
698 fi
699 done
700 done
701 done
702 done
703 done
704 done
705 done
707 if test -z "$os_used" && test "$os" != none; then
708 AC_MSG_ERROR(Operating system $os is not supported.)
709 fi
710 if test -z "$machine_used" && test "$machine" != none; then
711 AC_MSG_ERROR(The $machine is not supported.)
712 fi
713 if test -z "$submachine_used" && test -n "$submachine"; then
714 AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.)
715 fi
716 AC_SUBST(submachine)
718 # We have now validated the configuration.
721 # If using ELF, look for an `elf' subdirectory of each machine directory.
722 # We prepend these rather than inserting them whereever the machine appears
723 # because things specified by the machine's ELF ABI should override
724 # OS-specific things, and should always be the same for any OS on the
725 # machine (otherwise what's the point of an ABI?).
726 if test "$elf" = yes; then
727 elf_dirs=
728 for d in $add_ons_pfx ''; do
729 for m in $mach; do
730 if test -d $srcdir/${d}sysdeps$m/elf; then
731 elf_dirs="$elf_dirs ${d}sysdeps$m/elf"
732 fi
733 done
734 done
735 sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames"
736 fi
739 # Expand the list of system names into a full list of directories
740 # from each element's parent name and Implies file (if present).
741 set $sysnames
742 names=
743 while test $# -gt 0; do
744 name=$1
745 shift
747 case " $names " in *" $name "*)
748 # Already in the list.
749 continue
750 esac
752 # Report each name as we discover it, so there is no long pause in output.
753 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
755 name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'`
757 case $name in
758 /*) xsrcdir= ;;
759 *) xsrcdir=$srcdir/ ;;
760 esac
761 test -n "$enable_debug_configure" &&
762 echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2
764 if test -f $xsrcdir$name/Implies; then
765 # Collect more names from the `Implies' file (removing comments).
766 implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`"
767 implied=
768 for x in $implied_candidate; do
769 found=no
770 if test -d $xsrcdir$name_base/$x; then
771 implied="$implied $name_base/$x";
772 found=yes
773 fi
774 for d in $add_ons_pfx ''; do
775 try="${d}sysdeps/$x"
776 case $d in
777 /*) try_srcdir= ;;
778 *) try_srcdir=$srcdir/ ;;
779 esac
780 test -n "$enable_debug_configure" &&
781 echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2
782 if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
783 then
784 implied="$implied $try"
785 found=yes
786 case "$sysnames_add_ons" in
787 *" $d "*) ;;
788 *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
789 esac
790 fi
791 done
792 if test $found = no; then
793 AC_MSG_WARN($name/Implies specifies nonexistent $x)
794 fi
795 done
796 else
797 implied=
798 fi
800 # Add NAME to the list of names.
801 names="$names $name"
803 # Find the parent of NAME, using the empty string if it has none.
804 changequote(,)dnl
805 parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`"
806 changequote([,])dnl
808 # Add the names implied by NAME, and NAME's parent (if it has one), to
809 # the list of names to be processed (the argument list). We prepend the
810 # implied names to the list and append the parent. We want implied
811 # directories to come before further directories inferred from the
812 # configuration components; this ensures that for sysv4, unix/common
813 # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*)
814 # after sysv4).
815 sysnames="`echo $implied $* $parent`"
816 test -n "$sysnames" && set $sysnames
817 done
819 # Add the default directories.
820 default_sysnames=sysdeps/generic
821 if test "$elf" = yes; then
822 default_sysnames="sysdeps/generic/elf $default_sysnames"
823 fi
824 sysnames="$names $default_sysnames"
825 AC_SUBST(sysnames)
826 # The other names were emitted during the scan.
827 AC_MSG_RESULT($default_sysnames)
829 # Collect the list of add-ons that supply partial sysdeps trees.
830 sysdeps_add_ons=
831 for add_on in $add_ons; do
832 case "$add_on" in
833 /*) xsrcdir= ;;
834 *) xsrcdir="$srcdir/" ;;
835 esac
837 test -d "$xsrcdir$add_on/sysdeps" || {
838 case "$configured_add_ons " in
839 *" $add_on "*) ;;
840 *|'')
841 AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree)
842 ;;
843 esac
844 continue
845 }
847 sysdeps_add_ons="$sysdeps_add_ons $add_on"
848 case "$sysnames_add_ons" in
849 *" $add_on/ "*) ;;
850 *|'')
851 AC_MSG_WARN(add-on $add_on contributed no sysdeps directories)
852 continue ;;
853 esac
855 found=no
856 for d in $sysnames; do
857 case "$d" in
858 $add_on/sysdeps/*) ;;
859 *) continue ;;
860 esac
861 (cd "$xsrcdir$d" && for f in *[[!~]]; do
862 case "$f" in
863 sys|bits)
864 for ff in $f/*.h; do
865 test -d "$ff" || { test -e "$ff" && exit 88; }
866 done
867 ;;
868 *)
869 test -d "$f" || { test -e "$f" && exit 88; }
870 ;;
871 esac
872 done)
873 if test $? -eq 88; then
874 found=yes
875 break
876 fi
877 done
878 if test $found = no; then
879 AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories)
880 fi
881 done
882 AC_SUBST(sysdeps_add_ons)
885 ### Locate tools.
887 AC_PROG_INSTALL
888 if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then
889 # The makefiles need to use a different form to find it in $srcdir.
890 INSTALL='\$(..)./scripts/install-sh -c'
891 fi
892 AC_PROG_LN_S
894 LIBC_PROG_BINUTILS
895 AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in
897 # Accept binutils 2.13 or newer.
898 AC_CHECK_PROG_VER(AS, $AS, --version,
899 [GNU assembler.* \([0-9]*\.[0-9.]*\)],
900 [2.1[3-9]*], AS=: critic_missing="$critic_missing as")
901 AC_CHECK_PROG_VER(LD, $LD, --version,
902 [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
903 [2.1[3-9]*], LD=: critic_missing="$critic_missing ld")
905 # We need the physical current working directory. We cannot use the
906 # "pwd -P" shell builtin since that's not portable. Instead we try to
907 # find a pwd binary. Note that assigning to the PWD environment
908 # variable might have some interesting side effects, so we don't do
909 # that.
910 AC_PATH_PROG(PWD_P, pwd, no)
911 if test "$PWD_P" = no; then
912 AC_MSG_ERROR(*** A pwd binary could not be found.)
913 fi
915 # These programs are version sensitive.
916 AC_CHECK_TOOL_PREFIX
917 AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
918 [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ],
919 critic_missing="$critic_missing gcc")
920 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
921 [GNU Make[^0-9]*\([0-9][0-9.]*\)],
922 [3.79* | 3.[89]*], critic_missing="$critic_missing make")
924 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
925 [GNU gettext.* \([0-9]*\.[0-9.]*\)],
926 [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*],
927 MSGFMT=: aux_missing="$aux_missing msgfmt")
928 AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
929 [GNU texinfo.* \([0-9][0-9.]*\)],
930 [4.*],
931 MAKEINFO=: aux_missing="$aux_missing makeinfo")
932 AC_CHECK_PROG_VER(SED, sed, --version,
933 [GNU sed version \([0-9]*\.[0-9.]*\)],
934 [3.0[2-9]*|3.[1-9]*|[4-9]*],
935 SED=: aux_missing="$aux_missing sed")
937 AC_CHECK_PROGS(AUTOCONF, autoconf, no)
938 case "x$AUTOCONF" in
939 xno|x|x:) AUTOCONF=no ;;
940 *)
941 AC_CACHE_CHECK(dnl
942 whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl
943 if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then
944 libc_cv_autoconf_works=yes
945 else
946 libc_cv_autoconf_works=no
947 fi])
948 test $libc_cv_autoconf_works = yes || AUTOCONF=no
949 ;;
950 esac
951 if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then
952 # If --without-cvs they probably won't change configure.in, so no complaints.
953 aux_missing="$aux_missing autoconf"
954 fi
956 test -n "$critic_missing" && AC_MSG_ERROR([
957 *** These critical programs are missing or too old:$critic_missing
958 *** Check the INSTALL file for required versions.])
960 test -n "$aux_missing" && AC_MSG_WARN([
961 *** These auxiliary programs are missing or incompatible versions:$aux_missing
962 *** some features will be disabled.
963 *** Check the INSTALL file for required versions.])
965 # if using special system headers, find out the compiler's sekrit
966 # header directory and add that to the list. NOTE: Only does the right
967 # thing on a system that doesn't need fixincludes. (Not presently a problem.)
968 if test -n "$sysheaders"; then
969 SYSINCLUDES=-nostdinc
970 for d in include include-fixed; do
971 i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" &&
972 SYSINCLUDES="$SYSINCLUDES -isystem $i"
973 done
974 SYSINCLUDES="$SYSINCLUDES \
975 -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"
976 if test -n "$CXX"; then
977 cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` &&
978 cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` &&
979 cxxheaders=`$CXX -print-file-name=../../../../include/c++/`"$cxxversion" &&
980 CXX_SYSINCLUDES="-isystem $cxxheaders \
981 -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward"
982 fi
983 fi
984 AC_SUBST(SYSINCLUDES)
985 AC_SUBST(CXX_SYSINCLUDES)
987 # check if ranlib is necessary
988 AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl
989 cat > conftest.c <<EOF
990 int a;
991 char b;
992 void c(void) {}
993 EOF
994 $CC $CFLAGS $CPPFLAGS -c conftest.c
995 $AR cr conftest.a conftest.o
996 cp conftest.a conftest2.a
997 $RANLIB conftest.a
998 if cmp -s conftest.a conftest2.a; then
999 libc_cv_ranlib_necessary=no
1000 else
1001 libc_cv_ranlib_necessary=yes
1002 fi
1003 rm -rf conftest*])
1004 if test "$libc_cv_ranlib_necessary" = no; then
1005 RANLIB=:
1006 fi
1008 # Test if LD_LIBRARY_PATH contains the notation for the current directory
1009 # since this would lead to problems installing/building glibc.
1010 # LD_LIBRARY_PATH contains the current directory if one of the following
1011 # is true:
1012 # - one of the terminals (":" and ";") is the first or last sign
1013 # - two terminals occur directly after each other
1014 # - the path contains an element with a dot in it
1015 AC_MSG_CHECKING(LD_LIBRARY_PATH variable)
1016 changequote(,)dnl
1017 case ${LD_LIBRARY_PATH} in
1018 [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
1019 ld_library_path_setting="contains current directory"
1020 ;;
1021 *)
1022 ld_library_path_setting="ok"
1023 ;;
1024 esac
1025 changequote([,])dnl
1026 AC_MSG_RESULT($ld_library_path_setting)
1027 if test "$ld_library_path_setting" != "ok"; then
1028 AC_MSG_ERROR([
1029 *** LD_LIBRARY_PATH shouldn't contain the current directory when
1030 *** building glibc. Please change the environment variable
1031 *** and run configure again.])
1032 fi
1034 AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl
1035 if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then
1036 libc_cv_gcc_static_libgcc=
1037 else
1038 libc_cv_gcc_static_libgcc=-static-libgcc
1039 fi])
1040 AC_SUBST(libc_cv_gcc_static_libgcc)
1042 AC_PATH_PROG(BASH_SHELL, bash, no)
1043 if test "$BASH_SHELL" != no &&
1044 $BASH_SHELL -c 'test "$BASH_VERSINFO" \
1045 && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
1046 libc_cv_have_bash2=yes
1047 else
1048 libc_cv_have_bash2=no
1049 fi
1050 AC_SUBST(libc_cv_have_bash2)
1052 dnl We need a ksh compatible shell for tzselect.
1053 if test "$BASH_SHELL" = no; then
1054 AC_PATH_PROG(KSH, ksh, no)
1055 if test "$KSH" = no; then
1056 libc_cv_have_ksh=no
1057 else
1058 libc_cv_have_ksh=yes
1059 fi
1060 else
1061 KSH="$BASH_SHELL"
1062 AC_SUBST(KSH)
1063 libc_cv_have_ksh=yes
1064 fi
1065 AC_SUBST(libc_cv_have_ksh)
1067 AC_PROG_AWK
1068 AC_PATH_PROG(PERL, perl, no)
1069 if test "$PERL" != no &&
1070 (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then
1071 PERL=no
1072 fi
1073 AC_PATH_PROG(INSTALL_INFO, install-info, no,
1074 $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
1075 AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
1077 AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl
1078 echo '#include <stddef.h>
1079 FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c
1080 if eval "$ac_cpp conftest.c 2>/dev/null" \
1081 | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then
1082 libc_cv_signed_size_t=no
1083 else
1084 libc_cv_signed_size_t=yes
1085 fi
1086 rm -f conftest*])
1087 if test $libc_cv_signed_size_t = yes; then
1088 dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings.
1089 cat >> confdefs.h <<\EOF
1090 #undef __SIZE_TYPE__
1091 #define __SIZE_TYPE__ unsigned
1092 EOF
1093 fi
1095 AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
1096 AC_TRY_COMPILE(dnl
1097 [#define __need_size_t
1098 #define __need_wchar_t
1099 #include <stddef.h>
1100 #define __need_NULL
1101 #include <stddef.h>], [size_t size; wchar_t wchar;
1102 #ifdef offsetof
1103 #error stddef.h ignored __need_*
1104 #endif
1105 if (&size == NULL || &wchar == NULL) abort ();],
1106 libc_cv_friendly_stddef=yes,
1107 libc_cv_friendly_stddef=no)])
1108 if test $libc_cv_friendly_stddef = yes; then
1109 config_vars="$config_vars
1110 override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
1111 fi
1113 AC_CACHE_CHECK(whether we need to use -P to assemble .S files,
1114 libc_cv_need_minus_P, [dnl
1115 cat > conftest.S <<EOF
1116 #include "confdefs.h"
1117 /* Nothing whatsoever. */
1118 EOF
1119 if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then
1120 libc_cv_need_minus_P=no
1121 else
1122 libc_cv_need_minus_P=yes
1123 fi
1124 rm -f conftest*])
1125 if test $libc_cv_need_minus_P = yes; then
1126 config_vars="$config_vars
1127 asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
1128 fi
1130 AC_MSG_CHECKING(whether .text pseudo-op must be used)
1131 AC_CACHE_VAL(libc_cv_dot_text, [dnl
1132 cat > conftest.s <<EOF
1133 .text
1134 EOF
1135 libc_cv_dot_text=
1136 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1137 libc_cv_dot_text=.text
1138 fi
1139 rm -f conftest*])
1140 if test -z "$libc_cv_dot_text"; then
1141 AC_MSG_RESULT(no)
1142 else
1143 AC_MSG_RESULT(yes)
1144 fi
1146 AC_CACHE_CHECK(for assembler global-symbol directive,
1147 libc_cv_asm_global_directive, [dnl
1148 libc_cv_asm_global_directive=UNKNOWN
1149 for ac_globl in .globl .global .EXPORT; do
1150 cat > conftest.s <<EOF
1151 ${libc_cv_dot_text}
1152 ${ac_globl} foo
1153 foo:
1154 EOF
1155 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1156 libc_cv_asm_global_directive=${ac_globl}
1157 fi
1158 rm -f conftest*
1159 test $libc_cv_asm_global_directive != UNKNOWN && break
1160 done])
1161 if test $libc_cv_asm_global_directive = UNKNOWN; then
1162 AC_MSG_ERROR(cannot determine asm global directive)
1163 else
1164 AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive})
1165 fi
1167 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
1168 cat > conftest.s <<EOF
1169 ${libc_cv_dot_text}
1170 foo:
1171 .set glibc_conftest_frobozz,foo
1172 $libc_cv_asm_global_directive glibc_conftest_frobozz
1173 EOF
1174 # The alpha-dec-osf1 assembler gives only a warning for `.set'
1175 # (but it doesn't work), so we must do a linking check to be sure.
1176 cat > conftest1.c <<\EOF
1177 extern int glibc_conftest_frobozz;
1178 void _start() { glibc_conftest_frobozz = 1; }
1179 EOF
1180 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1181 -nostartfiles -nostdlib \
1182 -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1183 libc_cv_asm_set_directive=yes
1184 else
1185 libc_cv_asm_set_directive=no
1186 fi
1187 rm -f conftest*])
1188 if test $libc_cv_asm_set_directive = yes; then
1189 AC_DEFINE(HAVE_ASM_SET_DIRECTIVE)
1190 fi
1192 AC_CACHE_CHECK(for assembler .type directive prefix,
1193 libc_cv_asm_type_prefix, [dnl
1194 libc_cv_asm_type_prefix=no
1195 for ac_try_prefix in '@' '%' '#'; do
1196 cat > conftest.s <<EOF
1197 ${libc_cv_dot_text}
1198 ${libc_cv_asm_global_directive} foo
1199 .type foo, ${ac_try_prefix}object
1200 .size foo, 1
1201 foo:
1202 .byte 1
1203 EOF
1204 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1205 libc_cv_asm_type_prefix=${ac_try_prefix}
1206 fi
1207 rm -f conftest*
1208 test "x$libc_cv_asm_type_prefix" != xno && break
1209 done])
1210 if test "x$libc_cv_asm_type_prefix" != xno; then
1211 AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix})
1212 fi
1214 AC_CACHE_CHECK(for assembler gnu_unique_object symbol type,
1215 libc_cv_asm_unique_object, [dnl
1216 cat > conftest.s <<EOF
1217 ${libc_cv_dot_text}
1218 _sym:
1219 .type _sym, ${libc_cv_asm_type_prefix}gnu_unique_object
1220 EOF
1221 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1222 libc_cv_asm_unique_object=yes
1223 else
1224 libc_cv_asm_unique_object=no
1225 fi
1226 rm -f conftest*])
1227 if test $libc_cv_asm_unique_object = yes; then
1228 AC_DEFINE(HAVE_ASM_UNIQUE_OBJECT)
1229 fi
1231 # For the multi-arch option we need support in the assembler.
1232 if test "$multi_arch" = yes; then
1233 if test "x$libc_cv_asm_type_prefix" != xno; then
1234 AC_CACHE_CHECK([for assembler gnu_indirect_function symbol type support],
1235 libc_cv_asm_gnu_indirect_function, [dnl
1236 cat > conftest.s <<EOF
1237 .type foo,%gnu_indirect_function
1238 EOF
1239 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD;
1240 then
1241 libc_cv_asm_gnu_indirect_function=yes
1242 else
1243 libc_cv_asm_gnu_indirect_function=no
1244 fi
1245 rm -f conftest*])
1246 else
1247 libc_cv_asm_gnu_indirect_function=no
1248 fi
1249 if test x"$libc_cv_asm_gnu_indirect_function" != xyes; then
1250 AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support])
1251 fi
1252 fi
1254 AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive,
1255 [cat > conftest.s <<EOF
1256 ${libc_cv_dot_text}
1257 _sym:
1258 .symver _sym,sym@VERS
1259 EOF
1260 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1261 libc_cv_asm_symver_directive=yes
1262 else
1263 libc_cv_asm_symver_directive=no
1264 fi
1265 rm -f conftest*])
1266 AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl
1267 if test $libc_cv_asm_symver_directive = yes; then
1268 cat > conftest.s <<EOF
1269 ${libc_cv_dot_text}
1270 _sym:
1271 .symver _sym,sym@VERS
1272 EOF
1273 cat > conftest.map <<EOF
1274 VERS_1 {
1275 global: sym;
1276 };
1278 VERS_2 {
1279 global: sym;
1280 } VERS_1;
1281 EOF
1282 if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
1283 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared
1284 -o conftest.so conftest.o
1285 -nostartfiles -nostdlib
1286 -Wl,--version-script,conftest.map
1287 1>&AS_MESSAGE_LOG_FD]);
1288 then
1289 libc_cv_ld_version_script_option=yes
1290 else
1291 libc_cv_ld_version_script_option=no
1292 fi
1293 else
1294 libc_cv_ld_version_script_option=no
1295 fi
1296 else
1297 libc_cv_ld_version_script_option=no
1298 fi
1299 rm -f conftest*])
1300 if test $shared != no &&
1301 test $libc_cv_asm_symver_directive = yes &&
1302 test $libc_cv_ld_version_script_option = yes &&
1303 test $enable_versioning = yes; then
1304 VERSIONING=yes
1305 AC_DEFINE(DO_VERSIONING)
1306 else
1307 VERSIONING=no
1308 fi
1309 AC_SUBST(VERSIONING)
1311 if test $elf = yes && test $shared != no && test $VERSIONING = no; then
1312 echo "\
1313 *** WARNING: You should not compile GNU libc without versioning. Not using
1314 *** versioning will introduce incompatibilities so that old binaries
1315 *** will not run anymore.
1316 *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)."
1317 fi
1318 if test $elf = yes; then
1319 AC_CACHE_CHECK(for .previous assembler directive,
1320 libc_cv_asm_previous_directive, [dnl
1321 cat > conftest.s <<EOF
1322 .section foo_section
1323 .previous
1324 EOF
1325 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1326 libc_cv_asm_previous_directive=yes
1327 else
1328 libc_cv_asm_previous_directive=no
1329 fi
1330 rm -f conftest*])
1331 if test $libc_cv_asm_previous_directive = yes; then
1332 AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
1333 else
1334 AC_CACHE_CHECK(for .popsection assembler directive,
1335 libc_cv_asm_popsection_directive, [dnl
1336 cat > conftest.s <<EOF
1337 .pushsection foo_section
1338 .popsection
1339 EOF
1340 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1341 libc_cv_asm_popsection_directive=yes
1342 else
1343 libc_cv_asm_popsection_directive=no
1344 fi
1345 rm -f conftest*])
1346 if test $libc_cv_asm_popsection_directive = yes; then
1347 AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
1348 fi
1349 fi
1350 AC_CACHE_CHECK(for .protected and .hidden assembler directive,
1351 libc_cv_asm_protected_directive, [dnl
1352 cat > conftest.s <<EOF
1353 .protected foo
1354 foo:
1355 .hidden bar
1356 bar:
1357 EOF
1358 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
1359 libc_cv_asm_protected_directive=yes
1360 else
1361 AC_MSG_ERROR(assembler support for symbol visibility is required)
1362 fi
1363 rm -f conftest*])
1365 if test $libc_cv_asm_protected_directive = yes; then
1366 AC_CACHE_CHECK(whether __attribute__((visibility())) is supported,
1367 libc_cv_visibility_attribute,
1368 [cat > conftest.c <<EOF
1369 int foo __attribute__ ((visibility ("hidden"))) = 1;
1370 int bar __attribute__ ((visibility ("protected"))) = 1;
1371 EOF
1372 libc_cv_visibility_attribute=no
1373 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1374 if grep '\.hidden.*foo' conftest.s >/dev/null; then
1375 if grep '\.protected.*bar' conftest.s >/dev/null; then
1376 libc_cv_visibility_attribute=yes
1377 fi
1378 fi
1379 fi
1380 rm -f conftest.[cs]
1381 ])
1382 if test $libc_cv_visibility_attribute != yes; then
1383 AC_MSG_ERROR(compiler support for visibility attribute is required)
1384 fi
1385 fi
1387 if test $libc_cv_visibility_attribute = yes; then
1388 AC_CACHE_CHECK(for broken __attribute__((visibility())),
1389 libc_cv_broken_visibility_attribute,
1390 [cat > conftest.c <<EOF
1391 int foo (int x);
1392 int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden")));
1393 int bar (int x) { return x; }
1394 EOF
1395 libc_cv_broken_visibility_attribute=yes
1396 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then
1397 changequote(,)dnl
1398 if grep '\.hidden[ _]foo' conftest.s >/dev/null; then
1399 changequote([,])dnl
1400 libc_cv_broken_visibility_attribute=no
1401 fi
1402 fi
1403 rm -f conftest.c conftest.s
1404 ])
1405 if test $libc_cv_broken_visibility_attribute = yes; then
1406 AC_MSG_ERROR(working compiler support for visibility attribute is required)
1407 fi
1408 fi
1410 AC_CACHE_CHECK(for broken __attribute__((alias())),
1411 libc_cv_broken_alias_attribute,
1412 [cat > conftest.c <<EOF
1413 extern int foo (int x) __asm ("xyzzy");
1414 int bar (int x) { return x; }
1415 extern __typeof (bar) foo __attribute ((weak, alias ("bar")));
1416 extern int dfoo;
1417 extern __typeof (dfoo) dfoo __asm ("abccb");
1418 int dfoo = 1;
1419 EOF
1420 libc_cv_broken_alias_attribute=yes
1421 if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
1422 if grep 'xyzzy' conftest.s >/dev/null &&
1423 grep 'abccb' conftest.s >/dev/null; then
1424 libc_cv_broken_alias_attribute=no
1425 fi
1426 fi
1427 rm -f conftest.c conftest.s
1428 ])
1429 if test $libc_cv_broken_alias_attribute = yes; then
1430 AC_MSG_ERROR(working alias attribute support required)
1431 fi
1433 if test $libc_cv_visibility_attribute = yes; then
1434 AC_CACHE_CHECK(whether to put _rtld_local into .sdata section,
1435 libc_cv_have_sdata_section,
1436 [echo "int i;" > conftest.c
1437 libc_cv_have_sdata_section=no
1438 if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
1439 | grep '\.sdata' >/dev/null; then
1440 libc_cv_have_sdata_section=yes
1441 fi
1442 rm -f conftest.c conftest.so
1443 ])
1444 if test $libc_cv_have_sdata_section = yes; then
1445 AC_DEFINE(HAVE_SDATA_SECTION)
1446 fi
1447 fi
1449 AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
1450 libc_cv_initfini_array, [dnl
1451 cat > conftest.c <<EOF
1452 int _start (void) { return 0; }
1453 int __start (void) { return 0; }
1454 int foo (void) { return 1; }
1455 int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
1456 EOF
1457 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c
1458 -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])
1459 then
1460 if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then
1461 libc_cv_initfini_array=yes
1462 else
1463 libc_cv_initfini_array=no
1464 fi
1465 else
1466 libc_cv_initfini_array=no
1467 fi
1468 rm -f conftest*])
1469 if test $libc_cv_initfini_array != yes; then
1470 AC_MSG_ERROR([Need linker with .init_array/.fini_array support.])
1471 fi
1473 AC_CACHE_CHECK(for libunwind-support in compiler,
1474 libc_cv_cc_with_libunwind, [
1475 cat > conftest.c <<EOF
1476 int main (void) { return 0; }
1477 EOF
1478 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \
1479 conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then
1480 libc_cv_cc_with_libunwind=yes
1481 else
1482 libc_cv_cc_with_libunwind=no
1483 fi
1484 rm -f conftest*])
1485 AC_SUBST(libc_cv_cc_with_libunwind)
1486 if test $libc_cv_cc_with_libunwind = yes; then
1487 AC_DEFINE(HAVE_CC_WITH_LIBUNWIND)
1488 fi
1490 AC_CACHE_CHECK(for -z nodelete option,
1491 libc_cv_z_nodelete, [dnl
1492 cat > conftest.c <<EOF
1493 int _start (void) { return 42; }
1494 EOF
1495 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1496 -fPIC -shared -o conftest.so conftest.c
1497 -nostartfiles -nostdlib
1498 -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD])
1499 then
1500 libc_cv_z_nodelete=yes
1501 else
1502 AC_MSG_ERROR(linker with -z nodelete support required)
1503 fi
1504 rm -f conftest*])
1506 AC_CACHE_CHECK(for -z nodlopen option,
1507 libc_cv_z_nodlopen, [dnl
1508 cat > conftest.c <<EOF
1509 int _start (void) { return 42; }
1510 EOF
1511 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1512 -fPIC -shared -o conftest.so conftest.c
1513 -nostartfiles -nostdlib
1514 -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD])
1515 then
1516 libc_cv_z_nodlopen=yes
1517 else
1518 AC_MSG_ERROR(linker with -z nodlopen support required)
1519 fi
1520 rm -f conftest*])
1522 AC_CACHE_CHECK(for -z initfirst option,
1523 libc_cv_z_initfirst, [dnl
1524 cat > conftest.c <<EOF
1525 int _start (void) { return 42; }
1526 EOF
1527 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1528 -fPIC -shared -o conftest.so conftest.c
1529 -nostartfiles -nostdlib
1530 -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD])
1531 then
1532 libc_cv_z_initfirst=yes
1533 else
1534 AC_MSG_ERROR(linker with -z initfirst support required)
1535 fi
1536 rm -f conftest*])
1538 case "$base_machine" in
1539 changequote(,)dnl
1540 i[34567]86 | x86_64 | powerpc* | s390* | sparc* | alpha*)
1541 changequote([,])dnl
1542 AC_CACHE_CHECK(for -z relro option,
1543 libc_cv_z_relro, [dnl
1544 libc_cv_z_relro=no
1545 if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD])
1546 then
1547 if AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep DATA_SEGMENT_RELRO_END 1>&AS_MESSAGE_LOG_FD])
1548 then
1549 libc_cv_z_relro=yes
1550 fi
1551 fi])
1552 if test "$libc_cv_z_relro" = no; then
1553 AC_MSG_ERROR(linker with -z relro support required)
1554 fi
1555 ;;
1556 *) ;;
1557 esac
1559 AC_CACHE_CHECK(for -Bgroup option,
1560 libc_cv_Bgroup, [dnl
1561 cat > conftest.c <<EOF
1562 int _start (void) { return 42; }
1563 EOF
1564 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1565 -fPIC -shared -o conftest.so conftest.c
1566 -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD])
1567 then
1568 libc_cv_Bgroup=yes
1569 else
1570 libc_cv_Bgroup=no
1571 fi
1572 rm -f conftest*])
1573 AC_SUBST(libc_cv_Bgroup)
1575 AC_CACHE_CHECK(for libgcc_s suffix,
1576 libc_cv_libgcc_s_suffix, [dnl
1577 cat > conftest.c <<EOF
1578 int main (void) { return 0; }
1579 EOF
1580 changequote(,)dnl
1581 libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1582 -fPIC -shared -shared-libgcc -o conftest.so \
1583 conftest.c -v 2>&1 >/dev/null \
1584 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
1585 changequote([,])dnl
1586 rm -f conftest*])
1587 AC_SUBST(libc_cv_libgcc_s_suffix)
1589 AC_CACHE_CHECK(for --as-needed option,
1590 libc_cv_as_needed, [dnl
1591 cat > conftest.c <<EOF
1592 int main (void) { return 0; }
1593 EOF
1594 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1595 -fPIC -shared -o conftest.so conftest.c
1596 -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed
1597 -nostdlib 1>&AS_MESSAGE_LOG_FD])
1598 then
1599 libc_cv_as_needed=yes
1600 else
1601 libc_cv_as_needed=no
1602 fi
1603 rm -f conftest*])
1604 AC_SUBST(libc_cv_as_needed)
1606 ASFLAGS_config=
1607 AC_CACHE_CHECK(whether --noexecstack is desirable for .S files,
1608 libc_cv_as_noexecstack, [dnl
1609 cat > conftest.c <<EOF
1610 void foo (void) { }
1611 EOF
1612 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS
1613 -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \
1614 && grep -q .note.GNU-stack conftest.s \
1615 && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack
1616 -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD])
1617 then
1618 libc_cv_as_noexecstack=yes
1619 else
1620 libc_cv_as_noexecstack=no
1621 fi
1622 rm -f conftest*])
1623 if test $libc_cv_as_noexecstack = yes; then
1624 ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack"
1625 fi
1626 AC_SUBST(ASFLAGS_config)
1628 AC_CACHE_CHECK(for -z combreloc,
1629 libc_cv_z_combreloc, [dnl
1630 cat > conftest.c <<EOF
1631 extern int bar (int);
1632 extern int mumble;
1633 int foo (void) { return bar (mumble); }
1634 EOF
1635 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1636 -fPIC -shared -o conftest.so conftest.c
1637 -nostdlib -nostartfiles
1638 -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD])
1639 then
1640 dnl The following test is a bit weak. We must use a tool which can test
1641 dnl cross-platform since the gcc used can be a cross compiler. Without
1642 dnl introducing new options this is not easily doable. Instead use a tool
1643 dnl which always is cross-platform: readelf. To detect whether -z combreloc
1644 dnl look for a section named .rel.dyn.
1645 if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
1646 libc_cv_z_combreloc=yes
1647 else
1648 libc_cv_z_combreloc=no
1649 fi
1650 else
1651 libc_cv_z_combreloc=no
1652 fi
1653 rm -f conftest*])
1654 if test "$libc_cv_z_combreloc" = yes; then
1655 AC_DEFINE(HAVE_Z_COMBRELOC)
1656 fi
1657 AC_SUBST(libc_cv_z_combreloc)
1659 AC_CACHE_CHECK(for -z execstack,
1660 libc_cv_z_execstack, [dnl
1661 cat > conftest.c <<EOF
1662 int _start (void) { return 42; }
1663 EOF
1664 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1665 -fPIC -shared -o conftest.so conftest.c
1666 -Wl,-z,execstack -nostdlib
1667 1>&AS_MESSAGE_LOG_FD])
1668 then
1669 libc_cv_z_execstack=yes
1670 else
1671 libc_cv_z_execstack=no
1672 fi
1673 rm -f conftest*])
1674 AC_SUBST(libc_cv_z_execstack)
1676 AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl
1677 cat > conftest.c <<EOF
1678 int foo;
1679 main () { return 0;}
1680 EOF
1681 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie
1682 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1683 then
1684 libc_cv_fpie=yes
1685 else
1686 libc_cv_fpie=no
1687 fi
1688 rm -f conftest*])
1690 AC_SUBST(libc_cv_fpie)
1692 AC_CACHE_CHECK(for --hash-style option,
1693 libc_cv_hashstyle, [dnl
1694 cat > conftest.c <<EOF
1695 int _start (void) { return 42; }
1696 EOF
1697 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1698 -fPIC -shared -o conftest.so conftest.c
1699 -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD])
1700 then
1701 libc_cv_hashstyle=yes
1702 else
1703 libc_cv_hashstyle=no
1704 fi
1705 rm -f conftest*])
1706 AC_SUBST(libc_cv_hashstyle)
1707 fi
1709 AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl
1710 cat > conftest.c <<EOF
1711 int foo;
1712 EOF
1713 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors
1714 conftest.c 1>&AS_MESSAGE_LOG_FD])
1715 then
1716 libc_cv_fno_toplevel_reorder=yes
1717 else
1718 libc_cv_fno_toplevel_reorder=no
1719 fi
1720 rm -f conftest*])
1721 if test $libc_cv_fno_toplevel_reorder = yes; then
1722 fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors"
1723 else
1724 fno_unit_at_a_time=-fno-unit-at-a-time
1725 fi
1726 AC_SUBST(fno_unit_at_a_time)
1728 AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
1729 cat > conftest.c <<EOF
1730 int foo;
1731 main () { return 0;}
1732 EOF
1733 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector
1734 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD])
1735 then
1736 libc_cv_ssp=yes
1737 else
1738 libc_cv_ssp=no
1739 fi
1740 rm -f conftest*])
1741 AC_SUBST(libc_cv_ssp)
1743 AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl
1744 cat > conftest.c <<EOF
1745 int foo;
1746 #ifdef __GNUC_GNU_INLINE__
1747 main () { return 0;}
1748 #else
1749 #error
1750 #endif
1751 EOF
1752 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline
1753 -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD])
1754 then
1755 libc_cv_gnu89_inline=yes
1756 else
1757 libc_cv_gnu89_inline=no
1758 fi
1759 rm -f conftest*])
1760 if test $libc_cv_gnu89_inline = yes; then
1761 libc_cv_gnu89_inline=-fgnu89-inline
1762 else
1763 libc_cv_gnu89_inline=
1764 fi
1765 AC_SUBST(libc_cv_gnu89_inline)
1767 if test $elf != yes; then
1768 AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini,
1769 [AC_TRY_COMPILE(, [asm (".section .init");
1770 asm (".section .fini");
1771 asm ("${libc_cv_dot_text}");],
1772 libc_cv_have_initfini=yes,
1773 libc_cv_have_initfini=no)])
1774 AC_SUBST(libc_cv_have_initfini)dnl
1775 if test $libc_cv_have_initfini = yes; then
1776 AC_DEFINE(HAVE_INITFINI)
1777 fi
1778 fi
1780 if test $elf = yes; then
1781 AC_CACHE_CHECK(whether cc puts quotes around section names,
1782 libc_cv_have_section_quotes,
1783 [cat > conftest.c <<EOF
1784 static const int foo
1785 __attribute__ ((section ("bar"))) = 1;
1786 EOF
1787 if ${CC-cc} -S conftest.c -o conftest.s; then
1788 if grep '\.section.*"bar"' conftest.s >/dev/null; then
1789 libc_cv_have_section_quotes=yes
1790 else
1791 libc_cv_have_section_quotes=no
1792 fi
1793 else
1794 libc_cv_have_section_quotes=unknown
1795 fi
1796 rm -f conftest.[cs]
1797 ])
1798 if test $libc_cv_have_section_quotes = yes; then
1799 AC_DEFINE(HAVE_SECTION_QUOTES)
1800 fi
1801 fi
1803 dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
1804 AC_DEFUN(AC_CHECK_ASM_UNDERSCORE,
1805 [cat > conftest.$ac_ext <<EOF
1806 dnl This sometimes fails to find confdefs.h, for some reason.
1807 dnl [#]line $LINENO "[$]0"
1808 [#]line $LINENO "configure"
1809 #include "confdefs.h"
1810 void underscore_test(void) {
1811 return; }
1812 EOF
1813 if AC_TRY_EVAL(ac_compile); then
1814 if grep _underscore_test conftest* >/dev/null; then
1815 ifelse([$1], , :, [rm -f conftest*
1816 $1])
1817 else
1818 ifelse([$2], , , [rm -f conftest*
1819 $2])
1820 fi
1821 else
1822 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
1823 cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
1824 ifelse([$2], , , [rm -f conftest*
1825 $2])
1826 fi
1827 rm -f conftest*])
1829 if test $elf = yes; then
1830 libc_cv_asm_underscores=no
1831 else
1832 if test $ac_cv_prog_cc_works = yes; then
1833 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1834 [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();],
1835 libc_cv_asm_underscores=yes,
1836 libc_cv_asm_underscores=no)])
1837 else
1838 AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores,
1839 [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes,
1840 libc_cv_asm_underscores=no)])
1841 fi
1842 fi
1843 if test $libc_cv_asm_underscores = no; then
1844 AC_DEFINE(NO_UNDERSCORES)
1845 fi
1847 if test $elf = yes; then
1848 libc_cv_weak_symbols=yes
1849 fi
1851 AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive,
1852 [dnl
1853 cat > conftest.s <<EOF
1854 ${libc_cv_dot_text}
1855 ${libc_cv_asm_global_directive} foo
1856 foo:
1857 .weak foo
1858 .weak bar; bar = foo
1859 EOF
1860 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1861 libc_cv_asm_weak_directive=yes
1862 else
1863 libc_cv_asm_weak_directive=no
1864 fi
1865 rm -f conftest*])
1867 if test $libc_cv_asm_weak_directive = no; then
1868 AC_CACHE_CHECK(for assembler .weakext directive,
1869 libc_cv_asm_weakext_directive,
1870 [dnl
1871 cat > conftest.s <<EOF
1872 ${libc_cv_dot_text}
1873 ${libc_cv_asm_global_directive} foo
1874 foo:
1875 .weakext bar foo
1876 .weakext baz
1877 ${libc_cv_asm_global_directive} baz
1878 baz:
1879 EOF
1880 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1881 libc_cv_asm_weakext_directive=yes
1882 else
1883 libc_cv_asm_weakext_directive=no
1884 fi
1885 rm -f conftest*])
1887 fi # no .weak
1889 if test $libc_cv_asm_weak_directive = yes; then
1890 AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE)
1891 elif test $libc_cv_asm_weakext_directive = yes; then
1892 AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE)
1893 fi
1895 AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl
1896 case $machine in
1897 sparc/sparc64*) cfi_offset=2047;;
1898 *) cfi_offset=0;;
1899 esac
1900 cat > conftest.s <<EOF
1901 .text
1902 .type func,%function
1903 func:
1904 .cfi_startproc
1905 .cfi_remember_state
1906 .cfi_rel_offset 1, $cfi_offset
1907 .cfi_endproc
1908 EOF
1909 if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then
1910 libc_cv_asm_cfi_directives=yes
1911 else
1912 libc_cv_asm_cfi_directives=no
1913 fi
1914 rm -f conftest*])
1915 if test $libc_cv_asm_cfi_directives = yes; then
1916 AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES)
1917 fi
1919 AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl
1920 cat > conftest.c <<\EOF
1921 _start () {}
1922 int __eh_pc;
1923 __throw () {}
1924 EOF
1925 dnl No \ in command here because it ends up inside ''.
1926 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1927 -nostdlib -nostartfiles -Wl,--no-whole-archive
1928 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1929 libc_cv_ld_no_whole_archive=yes
1930 else
1931 libc_cv_ld_no_whole_archive=no
1932 fi
1933 rm -f conftest*])
1934 if test $libc_cv_ld_no_whole_archive = yes; then
1935 no_whole_archive=-Wl,--no-whole-archive
1936 fi
1937 AC_SUBST(no_whole_archive)dnl
1939 AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl
1940 cat > conftest.c <<\EOF
1941 _start () {}
1942 int __eh_pc;
1943 __throw () {}
1944 EOF
1945 dnl No \ in command here because it ends up inside ''.
1946 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
1947 -nostdlib -nostartfiles -fexceptions
1948 -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
1949 libc_cv_gcc_exceptions=yes
1950 else
1951 libc_cv_gcc_exceptions=no
1952 fi
1953 rm -f conftest*])
1954 if test $libc_cv_gcc_exceptions = yes; then
1955 exceptions=-fexceptions
1956 fi
1957 AC_SUBST(exceptions)dnl
1959 if test "$host_cpu" = powerpc ; then
1960 # Check for a bug present in at least versions 2.8.x of GCC
1961 # and versions 1.0.x of EGCS.
1962 AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
1963 AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
1964 libc_cv_c_asmcr0_bug='no',
1965 libc_cv_c_asmcr0_bug='yes')])
1966 if test "$libc_cv_c_asmcr0_bug" != 'no'; then
1967 AC_DEFINE(BROKEN_PPC_ASM_CR0)
1968 fi
1969 fi
1971 dnl Check whether compiler understands __builtin_expect.
1972 AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect,
1973 [cat > conftest.c <<EOF
1974 #line $LINENO "configure"
1975 int foo (int a)
1976 {
1977 a = __builtin_expect (a, 10);
1978 return a == 10 ? 0 : 1;
1979 }
1980 EOF
1981 dnl No \ in command here because it ends up inside ''.
1982 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles
1983 -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then
1984 libc_cv_gcc_builtin_expect=yes
1985 else
1986 libc_cv_gcc_builtin_expect=no
1987 fi
1988 rm -f conftest*])
1989 if test "$libc_cv_gcc_builtin_expect" = yes; then
1990 AC_DEFINE(HAVE_BUILTIN_EXPECT)
1991 fi
1993 AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
1994 cat > conftest.c <<\EOF
1995 void zero (void *x)
1996 {
1997 __builtin_memset (x, 0, 1000);
1998 }
1999 EOF
2000 dnl
2001 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]);
2002 then
2003 libc_cv_gcc_builtin_memset=no
2004 else
2005 libc_cv_gcc_builtin_memset=yes
2006 fi
2007 rm -f conftest* ])
2008 if test "$libc_cv_gcc_builtin_memset" = yes ; then
2009 AC_DEFINE(HAVE_BUILTIN_MEMSET)
2010 fi
2012 AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl
2013 cat > conftest.c <<\EOF
2014 extern char *strstr (const char *, const char *) __asm ("my_strstr");
2015 char *foo (const char *a, const char *b)
2016 {
2017 return __builtin_strstr (a, b);
2018 }
2019 EOF
2020 dnl
2021 if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]);
2022 then
2023 libc_cv_gcc_builtin_redirection=yes
2024 else
2025 libc_cv_gcc_builtin_redirection=no
2026 fi
2027 rm -f conftest* ])
2028 if test "$libc_cv_gcc_builtin_redirection" = yes ; then
2029 AC_DEFINE(HAVE_BUILTIN_REDIRECTION)
2030 fi
2032 dnl Check whether the compiler supports the __thread keyword.
2033 if test "x$use__thread" != xno; then
2034 AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
2035 [cat > conftest.c <<\EOF
2036 __thread int a = 42;
2037 EOF
2038 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then
2039 libc_cv_gcc___thread=yes
2040 else
2041 libc_cv_gcc___thread=no
2042 fi
2043 rm -f conftest*])
2044 if test "$libc_cv_gcc___thread" = yes; then
2045 AC_DEFINE(HAVE___THREAD)
2046 fi
2047 else
2048 libc_cv_gcc___thread=no
2049 fi
2051 if test "$libc_cv_gcc___thread" = yes; then
2052 dnl Check whether the compiler supports the tls_model attribute.
2053 AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl
2054 cat > conftest.c <<\EOF
2055 extern __thread int a __attribute__((tls_model ("initial-exec")));
2056 EOF
2057 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then
2058 libc_cv_gcc_tls_model_attr=yes
2059 else
2060 libc_cv_gcc_tls_model_attr=no
2061 fi
2062 rm -f conftest*])
2063 if test "$libc_cv_gcc_tls_model_attr" = yes; then
2064 AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE)
2065 fi
2066 fi
2068 if test -n "$submachine"; then
2069 AC_CACHE_CHECK([for compiler option for CPU variant],
2070 libc_cv_cc_submachine, [dnl
2071 libc_cv_cc_submachine=no
2072 for opt in "-march=$submachine" "-mcpu=$submachine"; do
2073 if AC_TRY_COMMAND([${CC-cc} $opt -xc /dev/null -S -o /dev/null]); then
2074 libc_cv_cc_submachine="$opt"
2075 break
2076 fi
2077 done])
2078 if test "x$libc_cv_cc_submachine" = xno; then
2079 AC_MSG_ERROR([${CC-cc} does not support $submachine])
2080 fi
2081 fi
2082 AC_SUBST(libc_cv_cc_submachine)
2084 dnl Check whether we have the gd library available.
2085 AC_MSG_CHECKING(for libgd)
2086 if test "$with_gd" != "no"; then
2087 old_CFLAGS="$CFLAGS"
2088 CFLAGS="$CFLAGS $libgd_include"
2089 old_LDFLAGS="$LDFLAGS"
2090 LDFLAGS="$LDFLAGS $libgd_ldflags"
2091 old_LIBS="$LIBS"
2092 LIBS="$LIBS -lgd -lpng -lz -lm"
2093 AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no)
2094 CFLAGS="$old_CFLAGS"
2095 LDFLAGS="$old_LDFLAGS"
2096 LIBS="$old_LIBS"
2097 else
2098 LIBGD=no
2099 fi
2100 AC_MSG_RESULT($LIBGD)
2101 AC_SUBST(LIBGD)
2103 # SELinux detection
2104 if test x$with_selinux = xno ; then
2105 have_selinux=no;
2106 else
2107 # See if we have the SELinux library
2108 AC_CHECK_LIB(selinux, is_selinux_enabled,
2109 have_selinux=yes, have_selinux=no)
2110 # See if we have the SELinux header with the NSCD permissions in it.
2111 if test x$have_selinux = xyes ; then
2112 AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h])
2113 AC_TRY_COMPILE([#include <selinux/av_permissions.h>],
2114 [#ifdef NSCD__SHMEMHOST
2115 return 0;
2116 #else
2117 #error NSCD__SHMEMHOST not defined
2118 #endif],
2119 have_selinux=yes, have_selinux=no)
2120 AC_MSG_RESULT($have_selinux)
2121 fi
2123 if test x$with_selinux = xyes ; then
2124 if test x$have_selinux = xno ; then
2125 AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found])
2126 fi
2127 fi
2128 fi
2129 # Check if we're building with SELinux support.
2130 if test "x$have_selinux" = xyes; then
2131 AC_DEFINE(HAVE_SELINUX, 1, [SELinux support])
2133 # See if we have the libaudit library
2134 AC_CHECK_LIB(audit, audit_log_user_avc_message,
2135 have_libaudit=yes, have_libaudit=no)
2136 if test "x$have_libaudit" = xyes; then
2137 AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support])
2138 fi
2139 AC_SUBST(have_libaudit)
2141 # See if we have the libcap library
2142 AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no)
2143 if test "x$have_libcap" = xyes; then
2144 AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support])
2145 fi
2146 AC_SUBST(have_libcap)
2147 fi
2148 AC_SUBST(have_selinux)
2150 dnl check for the size of 'long double'.
2151 AC_CHECK_SIZEOF(long double, 0)
2152 sizeof_long_double=$ac_cv_sizeof_long_double
2153 AC_SUBST(sizeof_long_double)
2155 ### End of automated tests.
2156 ### Now run sysdeps configure fragments.
2158 # They also can set these variables.
2159 use_ldconfig=no
2160 ldd_rewrite_script=no
2161 libc_cv_sysconfdir=$sysconfdir
2162 libc_cv_gcc_unwind_find_fde=no
2163 libc_cv_idn=no
2165 # Iterate over all the sysdep directories we will use, running their
2166 # configure fragments, and looking for a uname implementation.
2167 uname=
2168 for dir in $sysnames; do
2169 case $dir in
2170 /*) dest=$dir ;;
2171 *) dest=$srcdir/$dir ;;
2172 esac
2173 if test -r $dest/configure; then
2174 AC_MSG_RESULT(running configure fragment for $dir)
2175 . $dest/configure
2176 fi
2177 [
2178 if test -z "$uname"; then
2179 if test -r $dest/uname.c ||
2180 test -r $dest/uname.S ||
2181 { test -r $dest/syscalls.list &&
2182 grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then
2183 uname=$dir
2184 fi
2185 fi
2186 ]dnl
2187 done
2189 if test x$libc_cv_gcc_unwind_find_fde = xyes; then
2190 AC_DEFINE(EXPORT_UNWIND_FIND_FDE)
2191 fi
2192 AC_SUBST(libc_cv_gcc_unwind_find_fde)
2194 # If we will use the generic uname implementation, we must figure out what
2195 # it will say by examining the system, and write the results in config-name.h.
2196 if test "$uname" = "sysdeps/generic"; then
2198 changequote(,)dnl
2199 uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'`
2200 changequote([,])dnl
2201 if test $uname_sysname != $config_os; then
2202 config_release=`echo $config_os | sed s/$uname_sysname//`
2203 fi
2204 dnl
2205 AC_DEFUN(LIBC_KERNEL_ID, [dnl
2206 if test -r /vmunix; then
2207 kernel_id=`strings /vmunix | grep UNIX`
2208 elif test -r /dynix; then
2209 kernel_id=`strings /dynix | grep DYNIX`
2210 else
2211 kernel_id=
2212 fi
2213 ])dnl
2215 AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl
2216 LIBC_KERNEL_ID
2217 changequote(,)dnl
2218 kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
2219 changequote([,])dnl
2220 if test x`echo "$config_release" | sed "s/^$kernel_release//"` \
2221 != x$config_release; then
2222 # The configuration release is a substring of the kernel release.
2223 libc_cv_uname_release=$kernel_release
2224 elif test x$config_release != x; then
2225 libc_cv_uname_release=$config_release
2226 elif test x$kernel_release != x; then
2227 libc_cv_uname_release=$kernel_release
2228 else
2229 libc_cv_uname_release=unknown
2230 fi])
2231 uname_release="$libc_cv_uname_release"
2233 AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl
2234 LIBC_KERNEL_ID
2235 changequote(,)dnl
2236 kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
2237 changequote([,])dnl
2238 if test -n "$kernel_version"; then
2239 libc_cv_uname_version="$kernel_version"
2240 else
2241 libc_cv_uname_version=unknown
2242 fi])
2243 uname_version="$libc_cv_uname_version"
2245 AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl
2246 config_uname=config-name.h:config-name.in
2247 else
2248 # For non-generic uname, we don't need to create config-name.h at all.
2249 config_uname=
2250 fi
2252 dnl This is tested by existing code and it's simpler to avoid changing it.
2253 AC_DEFINE(USE_IN_LIBIO)
2255 # Test for old glibc 2.0.x headers so that they can be removed properly
2256 # Search only in includedir.
2257 AC_MSG_CHECKING(for old glibc 2.0.x headers)
2258 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
2259 then
2260 old_glibc_headers=yes
2261 else
2262 old_glibc_headers=no
2263 fi
2264 AC_MSG_RESULT($old_glibc_headers)
2265 if test ${old_glibc_headers} = yes; then
2266 AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will)
2267 AC_MSG_WARN(*** be removed.)
2268 fi
2269 AC_SUBST(old_glibc_headers)
2271 AC_SUBST(libc_cv_slibdir)
2272 AC_SUBST(libc_cv_localedir)
2273 AC_SUBST(libc_cv_sysconfdir)
2274 AC_SUBST(libc_cv_rootsbindir)
2275 AC_SUBST(libc_cv_forced_unwind)
2277 dnl sysdeps/CPU/configure.in checks set this via arch-specific asm tests
2278 AC_SUBST(libc_cv_cpp_asm_debuginfo)
2279 AC_SUBST(libc_cv_cc_sse4)
2280 AC_SUBST(libc_cv_cc_avx)
2282 AC_SUBST(use_ldconfig)
2283 AC_SUBST(ldd_rewrite_script)
2285 AC_SUBST(elf) AC_SUBST(xcoff)
2286 if test $elf = yes; then
2287 AC_DEFINE(HAVE_ELF)
2288 fi
2289 if test $xcoff = yes; then
2290 AC_DEFINE(HAVE_XCOFF)
2291 fi
2293 AC_SUBST(static)
2294 AC_SUBST(shared)
2295 if test $shared = default; then
2296 shared=$elf
2297 fi
2299 AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default,
2300 [libc_cv_pic_default=yes
2301 cat > conftest.c <<EOF
2302 #if defined __PIC__ || defined __pic__ || defined PIC || defined pic
2303 # error PIC is default.
2304 #endif
2305 EOF
2306 if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
2307 libc_cv_pic_default=no
2308 fi
2309 rm -f conftest.*])
2310 AC_SUBST(libc_cv_pic_default)
2312 AC_SUBST(profile)
2313 AC_SUBST(omitfp)
2314 AC_SUBST(bounded)
2315 AC_SUBST(static_nss)
2316 AC_SUBST(nopic_initfini)
2318 AC_SUBST(DEFINES)
2320 dnl See sysdeps/mach/configure.in for this variable.
2321 AC_SUBST(mach_interface_list)
2323 if test "`(cd $srcdir; pwd)`" = "`pwd`"; then
2324 config_makefile=
2325 else
2326 config_makefile=Makefile
2327 fi
2329 VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h`
2330 RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h`
2331 AC_SUBST(VERSION)
2332 AC_SUBST(RELEASE)
2334 AC_CONFIG_FILES([config.make ${config_makefile} ${config_uname}])
2335 AC_CONFIG_COMMANDS([default],[[
2336 case $CONFIG_FILES in *config.make*)
2337 echo "$config_vars" >> config.make;;
2338 esac
2339 test -d bits || mkdir bits]],[[config_vars='$config_vars']])
2340 AC_OUTPUT