]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
ff3d7ed3 | 2 | AC_REVISION([$CVSid$]) |
3a12e572 | 3 | AC_PREREQ(2.53)dnl dnl Minimum Autoconf version required. |
5d77b1da RM |
4 | AC_INIT([GNU C Library], [(see version.h)], [glibc]) |
5 | AC_CONFIG_SRCDIR([include/features.h]) | |
6b7f6183 RM |
6 | AC_CONFIG_HEADERS([config.h]) |
7 | AC_CONFIG_AUX_DIR([scripts]) | |
28f540f4 | 8 | |
7967983f RM |
9 | dnl This is here so we can set $subdirs directly based on configure fragments. |
10 | AC_CONFIG_SUBDIRS() | |
11 | ||
c16a054d AS |
12 | AC_CANONICAL_HOST |
13 | ||
c0bac8b0 UD |
14 | AC_PROG_CC |
15 | if test $host != $build; then | |
16 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
17 | fi | |
18 | AC_SUBST(cross_compiling) | |
19 | AC_PROG_CPP | |
20 | # We need the C++ compiler only for testing. | |
21 | AC_PROG_CXX | |
22 | ||
c72637d4 RM |
23 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
24 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
25 | fi | |
26 | ||
28f540f4 RM |
27 | # This will get text that should go into config.make. |
28 | config_vars= | |
29 | ||
c8f3e6db | 30 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 | 31 | AC_ARG_WITH([gd], |
77e8bddf AS |
32 | AC_HELP_STRING([--with-gd=DIR], |
33 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
34 | [dnl |
35 | case "$with_gd" in | |
f5f7239f UD |
36 | yes|''|no) ;; |
37 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
38 | libgd_ldflags="-L$withval/lib" ;; |
39 | esac | |
40 | ]) | |
6b7f6183 | 41 | AC_ARG_WITH([gd-include], |
77e8bddf AS |
42 | AC_HELP_STRING([--with-gd-include=DIR], |
43 | [find libgd include files in DIR]), | |
44 | [dnl | |
f5f7239f UD |
45 | case "$with_gd_include" in |
46 | ''|no) ;; | |
47 | *) libgd_include="-I$withval" ;; | |
48 | esac | |
49 | ]) | |
6b7f6183 | 50 | AC_ARG_WITH([gd-lib], |
77e8bddf AS |
51 | AC_HELP_STRING([--with-gd-lib=DIR], |
52 | [find libgd library files in DIR]), | |
53 | [dnl | |
f5f7239f UD |
54 | case "$with_gd_lib" in |
55 | ''|no) ;; | |
56 | *) libgd_ldflags="-L$withval" ;; | |
57 | esac | |
58 | ]) | |
59 | ||
60 | if test -n "$libgd_include"; then | |
61 | config_vars="$config_vars | |
cf90163d | 62 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
63 | fi |
64 | if test -n "$libgd_ldflags"; then | |
65 | config_vars="$config_vars | |
66 | libgd-LDFLAGS = $libgd_ldflags" | |
67 | fi | |
28f540f4 | 68 | |
ff3d7ed3 | 69 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 | 70 | AC_ARG_WITH([fp], |
77e8bddf AS |
71 | AC_HELP_STRING([--with-fp], |
72 | [if using floating-point hardware @<:@default=yes@:>@]), | |
6b7f6183 RM |
73 | [with_fp=$withval], |
74 | [with_fp=yes]) | |
675322a5 | 75 | AC_SUBST(with_fp) |
6b7f6183 | 76 | AC_ARG_WITH([binutils], |
77e8bddf AS |
77 | AC_HELP_STRING([--with-binutils=PATH], |
78 | [specify location of binutils (as and ld)]), | |
6b7f6183 RM |
79 | [path_binutils=$withval], |
80 | [path_binutils='']) | |
81 | AC_ARG_WITH([elf], | |
77e8bddf AS |
82 | AC_HELP_STRING([--with-elf], |
83 | [if using the ELF object format]), | |
6b7f6183 RM |
84 | [elf=$withval], |
85 | [elf=no]) | |
2fff3d93 | 86 | AC_ARG_WITH([selinux], |
77e8bddf AS |
87 | AC_HELP_STRING([--with-selinux], |
88 | [if building with SELinux support]), | |
2fff3d93 UD |
89 | [with_selinux=$withval], |
90 | [with_selinux=auto]) | |
6b7f6183 | 91 | AC_ARG_WITH([xcoff], |
77e8bddf AS |
92 | AC_HELP_STRING([--with-xcoff], |
93 | [if using the XCOFF object format]), | |
6b7f6183 RM |
94 | [xcoff=$withval], |
95 | [xcoff=no]) | |
96 | AC_ARG_WITH([cvs], | |
77e8bddf AS |
97 | AC_HELP_STRING([--without-cvs], |
98 | [if CVS should not be used]), | |
6b7f6183 RM |
99 | [with_cvs=$withval], |
100 | [with_cvs=yes]) | |
6b3f2b3d UD |
101 | if test "$with_cvs" = yes; then |
102 | if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null | |
103 | then | |
104 | with_cvs=no | |
105 | fi | |
4442d7e8 | 106 | fi |
4d06461a | 107 | AC_SUBST(with_cvs) |
28f540f4 | 108 | |
6b7f6183 | 109 | AC_ARG_WITH([headers], |
77e8bddf AS |
110 | AC_HELP_STRING([--with-headers=PATH], |
111 | [location of system headers to use | |
6b7f6183 RM |
112 | (for example /usr/src/linux/include) |
113 | @<:@default=compiler default@:>@]), | |
114 | [sysheaders=$withval], | |
115 | [sysheaders='']) | |
dbe7a0f5 | 116 | |
6b7f6183 | 117 | AC_ARG_ENABLE([sanity-checks], |
77e8bddf AS |
118 | AC_HELP_STRING([--disable-sanity-checks], |
119 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
6b7f6183 RM |
120 | [enable_sanity=$enableval], |
121 | [enable_sanity=yes]) | |
a18f587d | 122 | |
7dbde9db RM |
123 | AC_SUBST(enable_check_abi) |
124 | AC_ARG_ENABLE([check-abi], | |
fd54683c RM |
125 | AC_HELP_STRING([--enable-check-abi], |
126 | [do "make check-abi" in "make check" (no/warn/yes) | |
127 | @<:@default=no@:>@]), | |
7dbde9db | 128 | [enable_check_abi=$enableval], |
fd54683c | 129 | [enable_check_abi=no]) |
7dbde9db | 130 | |
650425ce UD |
131 | dnl Arguments to enable or disable building the static, shared, profiled, |
132 | dnl and -fomit-frame-pointer libraries. | |
b38bb8ca UD |
133 | dnl I've disabled this for now since we cannot build glibc without static |
134 | dnl libraries built in the moment. | |
6b7f6183 RM |
135 | dnl AC_ARG_ENABLE([static], |
136 | dnl AC_HELP_STRING([--enable-static], | |
137 | dnl [build static library @<:@default=yes@:>@]), | |
138 | dnl [static=$enableval], | |
139 | dnl [static=yes]) | |
5c2a0669 | 140 | static=yes |
6b7f6183 | 141 | AC_ARG_ENABLE([shared], |
77e8bddf AS |
142 | AC_HELP_STRING([--enable-shared], |
143 | [build shared library @<:@default=yes if GNU ld & ELF@:>@]), | |
6b7f6183 RM |
144 | [shared=$enableval], |
145 | [shared=default]) | |
146 | AC_ARG_ENABLE([profile], | |
77e8bddf AS |
147 | AC_HELP_STRING([--enable-profile], |
148 | [build profiled library @<:@default=no@:>@]), | |
6b7f6183 | 149 | [profile=$enableval], |
11bf311e | 150 | [profile=no]) |
6b7f6183 | 151 | AC_ARG_ENABLE([omitfp], |
77e8bddf AS |
152 | AC_HELP_STRING([--enable-omitfp], |
153 | [build undebuggable optimized library @<:@default=no@:>@]), | |
6b7f6183 RM |
154 | [omitfp=$enableval], |
155 | [omitfp=no]) | |
156 | AC_ARG_ENABLE([bounded], | |
77e8bddf AS |
157 | AC_HELP_STRING([--enable-bounded], |
158 | [build with runtime bounds checking @<:@default=no@:>@]), | |
6b7f6183 RM |
159 | [bounded=$enableval], |
160 | [bounded=no]) | |
161 | AC_ARG_ENABLE([versioning], | |
77e8bddf AS |
162 | AC_HELP_STRING([--disable-versioning], |
163 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
6b7f6183 RM |
164 | [enable_versioning=$enableval], |
165 | [enable_versioning=yes]) | |
166 | ||
167 | AC_ARG_ENABLE([oldest-abi], | |
77e8bddf AS |
168 | AC_HELP_STRING([--enable-oldest-abi=ABI], |
169 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
6b7f6183 RM |
170 | [oldest_abi=$enableval], |
171 | [oldest_abi=no]) | |
62ab42d6 UD |
172 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
173 | oldest_abi=default | |
174 | else | |
175 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
176 | fi | |
177 | AC_SUBST(oldest_abi) | |
178 | ||
35f1e827 UD |
179 | AC_ARG_ENABLE([stackguard-randomization], |
180 | AC_HELP_STRING([--enable-stackguard-randomization], | |
181 | [initialize __stack_chk_guard canary with a random number at program start]), | |
182 | [enable_stackguard_randomize=$enableval], | |
183 | [enable_stackguard_randomize=no]) | |
184 | if test "$enable_stackguard_randomize" = yes; then | |
185 | AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) | |
186 | fi | |
187 | ||
6b3a2224 | 188 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 | 189 | AC_ARG_ENABLE([add-ons], |
77e8bddf AS |
190 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], |
191 | [configure and build add-ons in DIR1,DIR2,... | |
192 | search for add-ons if no parameter given]), | |
e0a3ed4f | 193 | , [enable_add_ons=yes]) |
61952351 | 194 | |
8d4b5a8a | 195 | dnl Let the user avoid using TLS. Don't know why but... |
6b7f6183 | 196 | AC_ARG_WITH([tls], |
77e8bddf AS |
197 | AC_HELP_STRING([--with-tls], |
198 | [enable support for TLS]), | |
6b7f6183 | 199 | [usetls=$withval], |
619f9448 | 200 | [usetls=yes]) |
8d4b5a8a | 201 | |
6b7f6183 | 202 | AC_ARG_WITH([__thread], |
77e8bddf AS |
203 | AC_HELP_STRING([--without-__thread], |
204 | [do not use TLS features even when supporting them]), | |
6b7f6183 RM |
205 | [use__thread=$withval], |
206 | [use__thread=yes]) | |
5b8f26b4 | 207 | |
6b7f6183 | 208 | AC_ARG_ENABLE([hidden-plt], |
77e8bddf AS |
209 | AC_HELP_STRING([--disable-hidden-plt], |
210 | [do not hide internal function calls to avoid PLT]), | |
6b7f6183 RM |
211 | [hidden=$enableval], |
212 | [hidden=yes]) | |
749a9a4f RM |
213 | if test "x$hidden" = xno; then |
214 | AC_DEFINE(NO_HIDDEN) | |
215 | fi | |
216 | ||
4df8c11d UD |
217 | AC_ARG_ENABLE([bind-now], |
218 | AC_HELP_STRING([--enable-bind-now], | |
219 | [disable lazy relocations in DSOs]), | |
220 | [bindnow=$enableval], | |
221 | [bindnow=no]) | |
222 | AC_SUBST(bindnow) | |
223 | ||
5107cf1d UD |
224 | dnl On some platforms we cannot use dynamic loading. We must provide |
225 | dnl static NSS modules. | |
6b7f6183 | 226 | AC_ARG_ENABLE([static-nss], |
77e8bddf AS |
227 | AC_HELP_STRING([--enable-static-nss], |
228 | [build static NSS modules @<:@default=no@:>@]), | |
6b7f6183 RM |
229 | [static_nss=$enableval], |
230 | [static_nss=no]) | |
834cef7c UD |
231 | dnl Enable static NSS also if we build no shared objects. |
232 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 233 | static_nss=yes |
5107cf1d UD |
234 | AC_DEFINE(DO_STATIC_NSS) |
235 | fi | |
236 | ||
6b7f6183 | 237 | AC_ARG_ENABLE([force-install], |
77e8bddf AS |
238 | AC_HELP_STRING([--disable-force-install], |
239 | [don't force installation of files from this package, even if they are older than the installed files]), | |
6b7f6183 RM |
240 | [force_install=$enableval], |
241 | [force_install=yes]) | |
73237de3 UD |
242 | AC_SUBST(force_install) |
243 | ||
958f238f UD |
244 | dnl On some platforms we allow dropping compatibility with all kernel |
245 | dnl versions. | |
6b7f6183 | 246 | AC_ARG_ENABLE([kernel], |
77e8bddf AS |
247 | AC_HELP_STRING([--enable-kernel=VERSION], |
248 | [compile for compatibility with kernel not older than VERSION]), | |
6b7f6183 RM |
249 | [minimum_kernel=$enableval], |
250 | []) | |
86cfe82d UD |
251 | dnl Prevent unreasonable values. |
252 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
253 | # Better nothing than this. | |
254 | minimum_kernel="" | |
269e369f UD |
255 | else |
256 | if test "$minimum_kernel" = current; then | |
257 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
258 | fi | |
86cfe82d | 259 | fi |
958f238f | 260 | |
6cc7d725 UD |
261 | dnl For the development we sometimes want gcc to issue even more warnings. |
262 | dnl This is not the default since many of the extra warnings are not | |
263 | dnl appropriate. | |
6b7f6183 RM |
264 | AC_ARG_ENABLE([all-warnings], |
265 | AC_HELP_STRING([--enable-all-warnings], | |
77e8bddf | 266 | [enable all useful warnings gcc can issue]), |
6b7f6183 RM |
267 | [all_warnings=$enableval], |
268 | []) | |
6cc7d725 UD |
269 | AC_SUBST(all_warnings) |
270 | ||
425ce2ed UD |
271 | AC_ARG_ENABLE([multi-arch], |
272 | AC_HELP_STRING([--enable-multi-arch], | |
273 | [enable single DSO with optimizations for multiple architectures]), | |
274 | [multi_arch=$enableval], | |
6f89d2f3 | 275 | [multi_arch=default]) |
425ce2ed UD |
276 | |
277 | AC_ARG_ENABLE([experimental-malloc], | |
278 | AC_HELP_STRING([--enable-experimental-malloc], | |
279 | [enable experimental malloc features]), | |
280 | [experimental_malloc=$enableval], | |
281 | []) | |
282 | AC_SUBST(experimental_malloc) | |
283 | ||
ff886b82 UD |
284 | AC_ARG_ENABLE([nss-crypt], |
285 | AC_HELP_STRING([--enable-nss-crypt], | |
286 | [enable libcrypt to use nss]), | |
287 | [nss_crypt=$enableval], | |
288 | [nss_crypt=no]) | |
289 | if test x$nss_crypt = xyes; then | |
290 | nss_includes=-I$(nss-config --includedir 2>/dev/null) | |
291 | if test $? -ne 0; then | |
292 | AC_MSG_ERROR([cannot find include directory with nss-config]) | |
293 | fi | |
294 | old_CFLAGS="$CFLAGS" | |
295 | CFLAGS="$CFLAGS $nss_includes" | |
296 | AC_COMPILE_IFELSE([typedef int PRBool; | |
297 | #include <hasht.h> | |
298 | #include <nsslowhash.h> | |
299 | void f (void) { NSSLOW_Init (); }], | |
300 | libc_cv_nss_crypt=yes, | |
301 | AC_MSG_ERROR([ | |
302 | cannot find NSS headers with lowlevel hash function interfaces])) | |
303 | old_LIBS="$LIBS" | |
304 | LIBS="$LIBS -lfreebl3" | |
305 | AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; | |
306 | #include <hasht.h> | |
307 | #include <nsslowhash.h>], | |
308 | [NSSLOW_Init();])], | |
309 | libc_cv_nss_crypt=yes, | |
310 | AC_MSG_ERROR([ | |
311 | cannot link program using lowlevel NSS hash functions])) | |
312 | CFLAGS="$old_CFLAGS" | |
313 | LIBS="$old_LIBS" | |
314 | else | |
315 | libc_cv_nss_crypt=no | |
316 | fi | |
317 | AC_SUBST(libc_cv_nss_crypt) | |
318 | ||
8a523922 UD |
319 | # The way shlib-versions is used to generate soversions.mk uses a |
320 | # fairly simplistic model for name recognition that can't distinguish | |
321 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
322 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
323 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
324 | case "$host_os" in | |
325 | linux*) | |
326 | ;; | |
327 | gnu*) | |
328 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
329 | ;; | |
330 | esac | |
331 | ||
28f540f4 RM |
332 | # We keep the original values in `$config_*' and never modify them, so we |
333 | # can write them unchanged into config.make. Everything else uses | |
334 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
335 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
336 | ||
2f64b655 UD |
337 | # Don't allow vendor == "unknown" |
338 | test "$config_vendor" = unknown && config_vendor= | |
339 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
340 | ||
a2fe9c76 RM |
341 | # Some configurations imply other options. |
342 | case "$host_os" in | |
7799b7b3 UD |
343 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
344 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 345 | ;; |
ffa8d2a0 | 346 | gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6*) |
3776d592 RM |
347 | # These systems (almost) always use the ELF format. |
348 | elf=yes | |
84724245 | 349 | ;; |
5af3245a UD |
350 | aix*) |
351 | # These systems are always xcoff | |
352 | xcoff=yes | |
a711b01d | 353 | elf=no |
5af3245a | 354 | ;; |
a2fe9c76 RM |
355 | esac |
356 | ||
8f73811b RM |
357 | # The configure fragment of an add-on port can modify these to supplement |
358 | # or override the table in the case statement below. No fragment should | |
359 | # ever change the config_* variables, however. | |
28f540f4 RM |
360 | machine=$config_machine |
361 | vendor=$config_vendor | |
362 | os=$config_os | |
b22d21b3 | 363 | base_os='' |
28f540f4 | 364 | |
a808d541 UD |
365 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
366 | # Unify this here. | |
367 | if test "$machine" = rs6000; then | |
368 | machine="powerpc" | |
369 | fi | |
370 | ||
f4b07664 RM |
371 | # Braindead PowerPC box with absolutely no FPU. |
372 | case "$machine-$host_os" in | |
373 | powerpc*-*soft) | |
374 | with_fp=no | |
375 | ;; | |
376 | esac | |
377 | ||
2ceaa76a RM |
378 | submachine= |
379 | AC_ARG_WITH([cpu], | |
380 | AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), | |
381 | [dnl | |
382 | case "$withval" in | |
383 | yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; | |
384 | no) ;; | |
385 | *) submachine="$withval" ;; | |
386 | esac | |
387 | ]) | |
388 | ||
e0a3ed4f | 389 | # An add-on can set this when it wants to disable the sanity check below. |
8f73811b RM |
390 | libc_config_ok=no |
391 | ||
392 | dnl Having this here, though empty, makes sure that if add-ons' fragments | |
393 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
394 | dnl our AC_OUTPUT will actually use it. | |
395 | AC_CONFIG_SUBDIRS() | |
396 | ||
e0a3ed4f RM |
397 | case "$enable_add_ons" in |
398 | ''|no) add_ons= ;; | |
399 | yes|'*') | |
400 | add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | | |
401 | sed 's@/[[^/]]*$@@' | sort | uniq` | |
402 | add_ons_automatic=yes | |
403 | ;; | |
404 | *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` | |
405 | add_ons_automatic=no ;; | |
406 | esac | |
407 | ||
408 | configured_add_ons= | |
8f73811b RM |
409 | add_ons_sfx= |
410 | add_ons_pfx= | |
411 | if test x"$add_ons" != x; then | |
412 | for f in $add_ons; do | |
413 | # Some sanity checks | |
414 | case "$f" in | |
415 | crypt) | |
416 | AC_MSG_ERROR([ | |
417 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
418 | *** part of glibc and using the old add-on will not work with this | |
419 | *** release. Start again with fresh sources and without the old | |
420 | *** \`crypt' add-on.]) | |
421 | ;; | |
422 | localedata) | |
423 | AC_MSG_ERROR([ | |
424 | *** It seems that you're using an old \`localedata' add-on. localedata | |
425 | *** is now part of glibc and using the old add-on will not work with | |
426 | *** this release. Start again with fresh sources and without the old | |
427 | *** \`localedata' add-on.]) | |
428 | ;; | |
429 | esac | |
8f73811b RM |
430 | done |
431 | ||
9382fcee | 432 | # Now source each add-on's configure fragment. |
c80e931a RM |
433 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
434 | # and test $add_ons_automatic to see if they were explicitly requested. | |
435 | # A fragment can clear (or even change) $libc_add_on to affect | |
436 | # whether it goes into the list to be actually used in the build. | |
437 | use_add_ons= | |
9382fcee | 438 | for libc_add_on in $add_ons; do |
e0a3ed4f RM |
439 | # Test whether such a directory really exists. |
440 | # It can be absolute, or relative to $srcdir, or relative to the build dir. | |
441 | case "$libc_add_on" in | |
442 | /*) | |
443 | libc_add_on_srcdir=$libc_add_on | |
444 | ;; | |
445 | *) | |
446 | test -d "$srcdir/$libc_add_on" || { | |
77e8bddf | 447 | if test -d "$libc_add_on"; then |
e0a3ed4f RM |
448 | libc_add_on="`pwd`/$libc_add_on" |
449 | else | |
450 | AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) | |
451 | fi | |
452 | } | |
453 | libc_add_on_srcdir=$srcdir/$libc_add_on | |
454 | ;; | |
455 | esac | |
456 | ||
457 | libc_add_on_frag=$libc_add_on_srcdir/configure | |
458 | libc_add_on_canonical= | |
7967983f | 459 | libc_add_on_config_subdirs= |
e0a3ed4f RM |
460 | if test -r "$libc_add_on_frag"; then |
461 | AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) | |
462 | libc_add_on_canonical=unknown | |
463 | libc_add_on_subdirs= | |
464 | . "$libc_add_on_frag" | |
465 | test -z "$libc_add_on" || { | |
77e8bddf | 466 | configured_add_ons="$configured_add_ons $libc_add_on" |
e0a3ed4f RM |
467 | if test "x$libc_add_on_canonical" = xunknown; then |
468 | AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) | |
469 | fi | |
470 | for d in $libc_add_on_subdirs; do | |
471 | case "$libc_add_on" in | |
472 | /*) subdir_srcdir="$libc_add_on" ;; | |
473 | *) subdir_srcdir="\$(..)$libc_add_on" ;; | |
474 | esac | |
475 | case "$d" in | |
476 | .) | |
477 | d="${libc_add_on_canonical:-$libc_add_on}" | |
478 | ;; | |
479 | /*) | |
480 | subdir_srcdir="$d" | |
481 | ;; | |
482 | *) | |
483 | subdir_srcdir="$subdir_srcdir/$d" | |
484 | ;; | |
485 | esac | |
486 | d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` | |
487 | add_on_subdirs="$add_on_subdirs $d" | |
488 | test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars | |
489 | $d-srcdir = $subdir_srcdir" | |
490 | done | |
7967983f RM |
491 | for d in $libc_add_on_config_subdirs; do |
492 | case "$d" in | |
493 | /*) AC_MSG_ERROR(dnl | |
494 | fragment uses absolute path in \$libc_add_on_config_subdirs) ;; | |
495 | esac | |
496 | if test ! -d "$libc_add_on_srcdir/$d"; then | |
497 | AC_MSG_ERROR(fragment wants to configure missing directory $d) | |
498 | fi | |
499 | case "$libc_add_on" in | |
500 | /*) AC_MSG_ERROR(dnl | |
501 | relative path required for add-on using \$libc_add_on_config_subdirs) ;; | |
502 | esac | |
503 | subdirs="$subdirs $libc_add_on/$d" | |
504 | done | |
e0a3ed4f | 505 | } |
8f73811b | 506 | fi |
619f9448 | 507 | if test -n "$libc_add_on"; then |
e0a3ed4f RM |
508 | if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null` |
509 | then | |
510 | AC_MSG_CHECKING(add-on $libc_add_on for preconfigure fragments) | |
511 | for frag in $frags; do | |
512 | name=`echo "$frag" | sed 's@/[[^/]]*$@@;s@^.*/@@'` | |
513 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD | |
514 | . "$frag" | |
515 | done | |
516 | AC_MSG_RESULT() | |
517 | fi | |
619f9448 RM |
518 | use_add_ons="$use_add_ons $libc_add_on" |
519 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
e0a3ed4f RM |
520 | test -z "$libc_add_on_canonical" || |
521 | add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" | |
619f9448 | 522 | fi |
8f73811b | 523 | done |
c80e931a RM |
524 | # Use echo to strip excess whitespace. |
525 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
526 | fi |
527 | AC_SUBST(add_ons) | |
e0a3ed4f | 528 | AC_SUBST(add_on_subdirs) |
8f73811b RM |
529 | |
530 | ||
bdc8eb03 UD |
531 | ### |
532 | ### I put this here to prevent those annoying emails from people who cannot | |
533 | ### read and try to compile glibc on unsupported platforms. --drepper | |
534 | ### | |
535 | ### By using the undocumented --enable-hacker-mode option for configure | |
536 | ### one can skip this test to make the configuration not fail for unsupported | |
537 | ### platforms. | |
538 | ### | |
8f73811b | 539 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 540 | case "$machine-$host_os" in |
75d86c1f | 541 | *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*) |
bdc8eb03 UD |
542 | ;; |
543 | *) | |
544 | echo "*** The GNU C library is currently not available for this platform." | |
545 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
546 | echo "*** might never happen. So, if you have interest to see glibc on" | |
547 | echo "*** this platform visit" | |
548 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
549 | echo "*** and join the group of porters" | |
550 | exit 1 | |
551 | ;; | |
552 | esac | |
553 | fi | |
554 | ||
28f540f4 RM |
555 | dnl We need to use [ and ] for other purposes for a while now. |
556 | changequote(,)dnl | |
557 | # Expand the configuration machine name into a subdirectory by architecture | |
8f73811b RM |
558 | # type and particular chip. If an add-on configure fragment already set |
559 | # base_machine, we don't change it. | |
560 | test -n "$base_machine" || case "$machine" in | |
f0523145 | 561 | a29k | am29000) base_machine=a29k machine=a29k ;; |
60c96635 UD |
562 | c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
563 | c4[04]) base_machine=cx0 machine=cx0/c40 ;; | |
0b755dc4 | 564 | i[34567]86) base_machine=i386 machine=i386/$machine ;; |
d64e704c | 565 | ia64) base_machine=ia64 machine=ia64 ;; |
f0523145 RM |
566 | m88???) base_machine=m88k machine=m88k/$machine ;; |
567 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
92b27c74 UD |
568 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
569 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
570 | s390) base_machine=s390 machine=s390/s390-32 ;; |
571 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
572 | sh3*) base_machine=sh machine=sh/sh3 ;; |
573 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
574 | sparc | sparcv[67]) |
575 | base_machine=sparc machine=sparc/sparc32 ;; | |
576 | sparcv8 | supersparc | hypersparc) | |
577 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
578 | sparcv8plus | sparcv8plusa | sparcv9) |
579 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 | 580 | sparcv8plusb | sparcv9b) |
10c6e709 | 581 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;; |
2d73656b RM |
582 | sparcv9v) |
583 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;; | |
46ae8850 JJ |
584 | sparcv9v2) |
585 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;; | |
b1ecbed2 | 586 | sparc64) |
ca34d7a7 | 587 | base_machine=sparc machine=sparc/sparc64 ;; |
b1ecbed2 | 588 | sparc64b) |
bb769ab6 | 589 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; |
2d73656b RM |
590 | sparc64v) |
591 | base_machine=sparc machine=sparc/sparc64/sparcv9v ;; | |
46ae8850 JJ |
592 | sparc64v2) |
593 | base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;; | |
3a2832a0 | 594 | *) base_machine=$machine ;; |
28f540f4 | 595 | esac |
f0523145 RM |
596 | changequote([,])dnl |
597 | AC_SUBST(base_machine) | |
28f540f4 | 598 | |
dfd2257a UD |
599 | if test "$base_machine" = "i386"; then |
600 | AC_DEFINE(USE_REGPARMS) | |
601 | fi | |
602 | ||
84b9230c MF |
603 | # For the multi-arch option we need support in the assembler. |
604 | AC_CACHE_CHECK([for assembler gnu_indirect_function symbol type support], | |
77e8bddf | 605 | libc_cv_asm_gnu_indirect_function, [dnl |
84b9230c MF |
606 | cat > conftest.s <<EOF |
607 | .type foo,%gnu_indirect_function | |
608 | EOF | |
609 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; | |
610 | then | |
611 | libc_cv_asm_gnu_indirect_function=yes | |
612 | else | |
613 | libc_cv_asm_gnu_indirect_function=no | |
614 | fi | |
615 | rm -f conftest*]) | |
616 | ||
617 | AC_MSG_CHECKING(whether .text pseudo-op must be used) | |
618 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
619 | cat > conftest.s <<EOF | |
620 | .text | |
621 | EOF | |
622 | libc_cv_dot_text= | |
623 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
624 | libc_cv_dot_text=.text | |
625 | fi | |
626 | rm -f conftest*]) | |
627 | if test -z "$libc_cv_dot_text"; then | |
628 | AC_MSG_RESULT(no) | |
629 | else | |
630 | AC_MSG_RESULT(yes) | |
631 | fi | |
632 | ||
633 | AC_CACHE_CHECK(for assembler global-symbol directive, | |
634 | libc_cv_asm_global_directive, [dnl | |
635 | libc_cv_asm_global_directive=UNKNOWN | |
636 | for ac_globl in .globl .global .EXPORT; do | |
637 | cat > conftest.s <<EOF | |
638 | ${libc_cv_dot_text} | |
639 | ${ac_globl} foo | |
640 | foo: | |
641 | EOF | |
642 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
643 | libc_cv_asm_global_directive=${ac_globl} | |
644 | fi | |
645 | rm -f conftest* | |
646 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
647 | done]) | |
648 | if test $libc_cv_asm_global_directive = UNKNOWN; then | |
649 | AC_MSG_ERROR(cannot determine asm global directive) | |
650 | else | |
651 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
652 | fi | |
653 | ||
654 | AC_CACHE_CHECK(for assembler .type directive prefix, | |
655 | libc_cv_asm_type_prefix, [dnl | |
656 | libc_cv_asm_type_prefix=no | |
657 | for ac_try_prefix in '@' '%' '#'; do | |
658 | cat > conftest.s <<EOF | |
659 | ${libc_cv_dot_text} | |
660 | ${libc_cv_asm_global_directive} foo | |
661 | .type foo, ${ac_try_prefix}object | |
662 | .size foo, 1 | |
663 | foo: | |
664 | .byte 1 | |
665 | EOF | |
666 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
667 | libc_cv_asm_type_prefix=${ac_try_prefix} | |
668 | fi | |
669 | rm -f conftest* | |
670 | test "x$libc_cv_asm_type_prefix" != xno && break | |
671 | done]) | |
672 | if test "x$libc_cv_asm_type_prefix" != xno; then | |
673 | AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) | |
674 | fi | |
675 | ||
676 | if test x"$libc_cv_asm_gnu_indirect_function" != xyes -a x"$libc_cv_asm_type_prefix" = xno; then | |
677 | if test x"$multi_arch" = xyes; then | |
678 | AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) | |
679 | else | |
680 | multi_arch=no | |
681 | fi | |
682 | fi | |
683 | if test x"$multi_arch" != xno; then | |
684 | multi_arch_d=/multiarch | |
685 | fi | |
686 | ||
f0523145 | 687 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 688 | # This can take a while to compute. |
f0523145 | 689 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 690 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
691 | dnl We need to use [ and ] for other purposes for a while now. |
692 | changequote(,)dnl | |
28f540f4 RM |
693 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
694 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
695 | ||
b22d21b3 | 696 | test "x$base_os" != x || case "$os" in |
28f540f4 RM |
697 | gnu*) |
698 | base_os=mach/hurd ;; | |
883bc19b | 699 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 700 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 701 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 702 | base_os=unix/bsd ;; |
d586354e | 703 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 704 | base_os=unix/sysv ;; |
f802accb UD |
705 | irix6*) |
706 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 707 | solaris[2-9]*) |
28f540f4 | 708 | base_os=unix/sysv/sysv4 ;; |
908c3d5b UD |
709 | hpux*) |
710 | base_os=unix/sysv/hpux/$os ;; | |
75d86c1f UD |
711 | aix4.3*) |
712 | base_os=unix/sysv/aix/aix4.3 ;; | |
28f540f4 RM |
713 | none) |
714 | base_os=standalone ;; | |
28f540f4 RM |
715 | esac |
716 | ||
717 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
718 | tail=$os | |
719 | ostry=$os | |
720 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
721 | ostry="$ostry /$o" | |
722 | tail=$o | |
75914335 | 723 | done |
28f540f4 RM |
724 | o=`echo $tail | sed 's/[0-9]*$//'` |
725 | if test $o != $tail; then | |
726 | ostry="$ostry /$o" | |
727 | fi | |
ec4b0518 UD |
728 | # For linux-gnu, try linux-gnu, then linux. |
729 | o=`echo $tail | sed 's/-.*$//'` | |
730 | if test $o != $tail; then | |
731 | ostry="$ostry /$o" | |
732 | fi | |
28f540f4 RM |
733 | |
734 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
735 | base= | |
736 | tail=$base_os | |
737 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
738 | set $b | |
739 | base="$base /$1" | |
740 | tail="$2" | |
741 | done | |
742 | ||
ae6b8730 | 743 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 744 | mach= |
2ceaa76a | 745 | tail=$machine${submachine:+/$submachine} |
28f540f4 RM |
746 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
747 | set $m | |
10ceac89 RM |
748 | # Prepend the machine's FPU directory unless --without-fp. |
749 | if test "$with_fp" = yes; then | |
750 | mach="$mach /$1/fpu" | |
f4b07664 RM |
751 | else |
752 | mach="$mach /$1/nofpu" | |
82d00cab | 753 | fi |
28f540f4 RM |
754 | mach="$mach /$1" |
755 | tail="$2" | |
756 | done | |
757 | ||
758 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
759 | changequote([,])dnl | |
760 | ||
761 | # Find what sysdep directories exist. | |
e0a3ed4f | 762 | sysnames_add_ons= |
28f540f4 | 763 | sysnames= |
4b69abad RM |
764 | for b in $base ''; do |
765 | for m0 in $mach ''; do | |
766 | for v in /$vendor ''; do | |
767 | test "$v" = / && continue | |
768 | for o in /$ostry ''; do | |
769 | test "$o" = / && continue | |
425ce2ed | 770 | for m in $multi_arch_d $mach ''; do |
4b69abad | 771 | for d in $add_ons_pfx ''; do |
8f73811b | 772 | for a in $add_ons_sfx ''; do |
e0a3ed4f | 773 | if test -n "$m0$m0sub$b$v$o$m$msub"; then |
77e8bddf AS |
774 | try_srcdir="${srcdir}/" |
775 | case "$d" in | |
e0a3ed4f RM |
776 | /*) try_srcdir= ;; |
777 | esac | |
4b69abad | 778 | try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a" |
8f73811b RM |
779 | test -n "$enable_debug_configure" && |
780 | echo "$0 [DEBUG]: try $try" >&2 | |
e0a3ed4f | 781 | if test -d "$try_srcdir$try"; then |
8f73811b RM |
782 | sysnames="$sysnames $try" |
783 | { test -n "$o" || test -n "$b"; } && os_used=t | |
784 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
4b69abad RM |
785 | case x${m0:-$m} in |
786 | x*/$submachine) submachine_used=t ;; | |
787 | esac | |
e0a3ed4f RM |
788 | if test -n "$d"; then |
789 | case "$sysnames_add_ons" in | |
790 | *" $d "*) ;; | |
791 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
792 | esac | |
793 | fi | |
8f73811b | 794 | fi |
57ba7bb4 | 795 | fi |
8f73811b | 796 | done |
57ba7bb4 | 797 | done |
28f540f4 RM |
798 | done |
799 | done | |
800 | done | |
801 | done | |
4b69abad | 802 | done |
28f540f4 | 803 | |
6f89d2f3 L |
804 | # If the assembler supports gnu_indirect_function symbol type and the |
805 | # architecture supports multi-arch, we enable multi-arch by default. | |
84b9230c MF |
806 | case $sysnames_add_ons$sysnames in |
807 | *"$multi_arch_d"*) | |
808 | ;; | |
809 | *) | |
77e8bddf | 810 | test x"$multi_arch" = xdefault && multi_arch=no |
84b9230c MF |
811 | ;; |
812 | esac | |
813 | if test x"$multi_arch" != xno; then | |
6f89d2f3 L |
814 | AC_DEFINE(USE_MULTIARCH) |
815 | fi | |
816 | AC_SUBST(multi_arch) | |
817 | ||
28f540f4 RM |
818 | if test -z "$os_used" && test "$os" != none; then |
819 | AC_MSG_ERROR(Operating system $os is not supported.) | |
820 | fi | |
821 | if test -z "$machine_used" && test "$machine" != none; then | |
822 | AC_MSG_ERROR(The $machine is not supported.) | |
823 | fi | |
2ceaa76a RM |
824 | if test -z "$submachine_used" && test -n "$submachine"; then |
825 | AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) | |
826 | fi | |
827 | AC_SUBST(submachine) | |
28f540f4 RM |
828 | |
829 | # We have now validated the configuration. | |
830 | ||
335aa320 | 831 | |
10ceac89 RM |
832 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
833 | # We prepend these rather than inserting them whereever the machine appears | |
834 | # because things specified by the machine's ELF ABI should override | |
835 | # OS-specific things, and should always be the same for any OS on the | |
836 | # machine (otherwise what's the point of an ABI?). | |
837 | if test "$elf" = yes; then | |
838 | elf_dirs= | |
57ba7bb4 | 839 | for d in $add_ons_pfx ''; do |
57ba7bb4 | 840 | for m in $mach; do |
9c4c0024 | 841 | if test -d $srcdir/${d}sysdeps$m/elf; then |
c2bb8cab | 842 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
843 | fi |
844 | done | |
28f540f4 | 845 | done |
57ba7bb4 | 846 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
847 | fi |
848 | ||
335aa320 | 849 | |
28f540f4 RM |
850 | # Expand the list of system names into a full list of directories |
851 | # from each element's parent name and Implies file (if present). | |
852 | set $sysnames | |
e50ec9f9 | 853 | names= |
28f540f4 RM |
854 | while test $# -gt 0; do |
855 | name=$1 | |
856 | shift | |
857 | ||
e50ec9f9 | 858 | case " $names " in *" $name "*) |
f332db02 RM |
859 | # Already in the list. |
860 | continue | |
e50ec9f9 | 861 | esac |
f332db02 RM |
862 | |
863 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 864 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 865 | |
57ba7bb4 UD |
866 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
867 | ||
868 | case $name in | |
869 | /*) xsrcdir= ;; | |
870 | *) xsrcdir=$srcdir/ ;; | |
871 | esac | |
872 | test -n "$enable_debug_configure" && | |
873 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
874 | ||
875 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 876 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
877 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
878 | implied= | |
879 | for x in $implied_candidate; do | |
636ccfc8 | 880 | found=no |
57ba7bb4 UD |
881 | if test -d $xsrcdir$name_base/$x; then |
882 | implied="$implied $name_base/$x"; | |
636ccfc8 UD |
883 | found=yes |
884 | fi | |
885 | for d in $add_ons_pfx ''; do | |
886 | try="${d}sysdeps/$x" | |
887 | case $d in | |
888 | /*) try_srcdir= ;; | |
889 | *) try_srcdir=$srcdir/ ;; | |
890 | esac | |
891 | test -n "$enable_debug_configure" && | |
892 | echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 | |
893 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
894 | then | |
895 | implied="$implied $try" | |
896 | found=yes | |
e0a3ed4f RM |
897 | case "$sysnames_add_ons" in |
898 | *" $d "*) ;; | |
899 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
900 | esac | |
636ccfc8 UD |
901 | fi |
902 | done | |
903 | if test $found = no; then | |
77e8bddf | 904 | AC_MSG_WARN($name/Implies specifies nonexistent $x) |
57ba7bb4 | 905 | fi |
28f540f4 RM |
906 | done |
907 | else | |
908 | implied= | |
909 | fi | |
910 | ||
911 | # Add NAME to the list of names. | |
912 | names="$names $name" | |
913 | ||
914 | # Find the parent of NAME, using the empty string if it has none. | |
915 | changequote(,)dnl | |
57ba7bb4 | 916 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
917 | changequote([,])dnl |
918 | ||
919 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
920 | # the list of names to be processed (the argument list). We prepend the | |
921 | # implied names to the list and append the parent. We want implied | |
922 | # directories to come before further directories inferred from the | |
923 | # configuration components; this ensures that for sysv4, unix/common | |
924 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
925 | # after sysv4). | |
926 | sysnames="`echo $implied $* $parent`" | |
927 | test -n "$sysnames" && set $sysnames | |
928 | done | |
929 | ||
930 | # Add the default directories. | |
ecdc196c | 931 | default_sysnames=sysdeps/generic |
2de7874e | 932 | if test "$elf" = yes; then |
ecdc196c | 933 | default_sysnames="sysdeps/generic/elf $default_sysnames" |
2de7874e | 934 | fi |
ecdc196c | 935 | sysnames="$names $default_sysnames" |
f332db02 RM |
936 | AC_SUBST(sysnames) |
937 | # The other names were emitted during the scan. | |
ecdc196c | 938 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 939 | |
e0a3ed4f RM |
940 | # Collect the list of add-ons that supply partial sysdeps trees. |
941 | sysdeps_add_ons= | |
942 | for add_on in $add_ons; do | |
943 | case "$add_on" in | |
944 | /*) xsrcdir= ;; | |
945 | *) xsrcdir="$srcdir/" ;; | |
946 | esac | |
947 | ||
948 | test -d "$xsrcdir$add_on/sysdeps" || { | |
949 | case "$configured_add_ons " in | |
950 | *" $add_on "*) ;; | |
951 | *|'') | |
952 | AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) | |
953 | ;; | |
954 | esac | |
955 | continue | |
956 | } | |
957 | ||
958 | sysdeps_add_ons="$sysdeps_add_ons $add_on" | |
959 | case "$sysnames_add_ons" in | |
960 | *" $add_on/ "*) ;; | |
961 | *|'') | |
962 | AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) | |
963 | continue ;; | |
964 | esac | |
965 | ||
966 | found=no | |
967 | for d in $sysnames; do | |
968 | case "$d" in | |
969 | $add_on/sysdeps/*) ;; | |
970 | *) continue ;; | |
971 | esac | |
972 | (cd "$xsrcdir$d" && for f in *[[!~]]; do | |
973 | case "$f" in | |
974 | sys|bits) | |
975 | for ff in $f/*.h; do | |
976 | test -d "$ff" || { test -e "$ff" && exit 88; } | |
977 | done | |
978 | ;; | |
979 | *) | |
77e8bddf | 980 | test -d "$f" || { test -e "$f" && exit 88; } |
e0a3ed4f RM |
981 | ;; |
982 | esac | |
983 | done) | |
984 | if test $? -eq 88; then | |
985 | found=yes | |
986 | break | |
987 | fi | |
988 | done | |
989 | if test $found = no; then | |
990 | AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) | |
991 | fi | |
992 | done | |
993 | AC_SUBST(sysdeps_add_ons) | |
994 | ||
f332db02 RM |
995 | |
996 | ### Locate tools. | |
28f540f4 | 997 | |
28f540f4 | 998 | AC_PROG_INSTALL |
2b80a372 | 999 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 1000 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 1001 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 1002 | fi |
0e3426bb | 1003 | AC_PROG_LN_S |
ae828bc6 | 1004 | |
4baa087a RM |
1005 | LIBC_PROG_BINUTILS |
1006 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
1007 | ||
1008 | # Accept binutils 2.13 or newer. | |
1009 | AC_CHECK_PROG_VER(AS, $AS, --version, | |
1010 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
f450806e | 1011 | [2.1[3-9]*|2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], AS=: critic_missing="$critic_missing as") |
4baa087a RM |
1012 | AC_CHECK_PROG_VER(LD, $LD, --version, |
1013 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
f450806e | 1014 | [2.1[3-9]*|2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 1015 | |
a4301d41 UD |
1016 | # We need the physical current working directory. We cannot use the |
1017 | # "pwd -P" shell builtin since that's not portable. Instead we try to | |
1018 | # find a pwd binary. Note that assigning to the PWD environment | |
1019 | # variable might have some interesting side effects, so we don't do | |
1020 | # that. | |
1021 | AC_PATH_PROG(PWD_P, pwd, no) | |
1022 | if test "$PWD_P" = no; then | |
1023 | AC_MSG_ERROR(*** A pwd binary could not be found.) | |
1024 | fi | |
1025 | ||
63bda0c1 | 1026 | # These programs are version sensitive. |
3a12e572 | 1027 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 1028 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
93aed667 | 1029 | [version \([egcygnustpi-]*[0-9.]*\)], [3.4* | 4.[0-9]* ], |
90d1d40b | 1030 | critic_missing="$critic_missing gcc") |
22e65f8f | 1031 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 1032 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 1033 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 1034 | |
22e65f8f | 1035 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 1036 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
1037 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
1038 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 1039 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 1040 | [GNU texinfo.* \([0-9][0-9.]*\)], |
aefdff34 RM |
1041 | [4.*], |
1042 | MAKEINFO=: aux_missing="$aux_missing makeinfo") | |
d6a97a28 | 1043 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 1044 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
1045 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
1046 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 1047 | |
476e7d78 RM |
1048 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
1049 | case "x$AUTOCONF" in | |
1050 | xno|x|x:) AUTOCONF=no ;; | |
1051 | *) | |
1052 | AC_CACHE_CHECK(dnl | |
1400de2e | 1053 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
1054 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
1055 | libc_cv_autoconf_works=yes | |
1056 | else | |
1057 | libc_cv_autoconf_works=no | |
1058 | fi]) | |
1059 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
1060 | ;; | |
1061 | esac | |
1062 | if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then | |
1063 | # If --without-cvs they probably won't change configure.in, so no complaints. | |
1064 | aux_missing="$aux_missing autoconf" | |
14519931 | 1065 | fi |
1400de2e | 1066 | |
32a448ed RM |
1067 | test -n "$critic_missing" && AC_MSG_ERROR([ |
1068 | *** These critical programs are missing or too old:$critic_missing | |
1069 | *** Check the INSTALL file for required versions.]) | |
1070 | ||
4bca4c17 | 1071 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 1072 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
1073 | *** some features will be disabled. |
1074 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 1075 | |
dbe7a0f5 UD |
1076 | # if using special system headers, find out the compiler's sekrit |
1077 | # header directory and add that to the list. NOTE: Only does the right | |
1078 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
1079 | if test -n "$sysheaders"; then | |
67fbfa5c RM |
1080 | SYSINCLUDES=-nostdinc |
1081 | for d in include include-fixed; do | |
1082 | i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" && | |
1083 | SYSINCLUDES="$SYSINCLUDES -isystem $i" | |
1084 | done | |
1085 | SYSINCLUDES="$SYSINCLUDES \ | |
3d6ce23a | 1086 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" |
ef226fec RM |
1087 | if test -n "$CXX"; then |
1088 | cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` && | |
1089 | cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` && | |
1090 | cxxheaders=`$CXX -print-file-name=../../../../include/c++/`"$cxxversion" && | |
1091 | CXX_SYSINCLUDES="-isystem $cxxheaders \ | |
1092 | -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward" | |
1093 | fi | |
dbe7a0f5 UD |
1094 | fi |
1095 | AC_SUBST(SYSINCLUDES) | |
ef226fec | 1096 | AC_SUBST(CXX_SYSINCLUDES) |
dbe7a0f5 | 1097 | |
97a47867 UD |
1098 | # check if ranlib is necessary |
1099 | AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl | |
1100 | cat > conftest.c <<EOF | |
1101 | int a; | |
1102 | char b; | |
1103 | void c(void) {} | |
1104 | EOF | |
3217788f | 1105 | $CC $CFLAGS $CPPFLAGS -c conftest.c |
72d4c33d | 1106 | $AR cr conftest.a conftest.o |
97a47867 UD |
1107 | cp conftest.a conftest2.a |
1108 | $RANLIB conftest.a | |
1109 | if cmp -s conftest.a conftest2.a; then | |
1110 | libc_cv_ranlib_necessary=no | |
f38931a9 | 1111 | else |
97a47867 UD |
1112 | libc_cv_ranlib_necessary=yes |
1113 | fi | |
1114 | rm -rf conftest*]) | |
1115 | if test "$libc_cv_ranlib_necessary" = no; then | |
1116 | RANLIB=: | |
f38931a9 | 1117 | fi |
f38931a9 | 1118 | |
3911660e UD |
1119 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
1120 | # since this would lead to problems installing/building glibc. | |
1121 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
1122 | # is true: | |
1123 | # - one of the terminals (":" and ";") is the first or last sign | |
1124 | # - two terminals occur directly after each other | |
1125 | # - the path contains an element with a dot in it | |
1126 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
1127 | changequote(,)dnl | |
1128 | case ${LD_LIBRARY_PATH} in | |
1129 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 1130 | ld_library_path_setting="contains current directory" |
3911660e UD |
1131 | ;; |
1132 | *) | |
1133 | ld_library_path_setting="ok" | |
1134 | ;; | |
1135 | esac | |
1136 | changequote([,])dnl | |
1137 | AC_MSG_RESULT($ld_library_path_setting) | |
1138 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
1139 | AC_MSG_ERROR([ |
1140 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
1141 | *** building glibc. Please change the environment variable | |
1142 | *** and run configure again.]) | |
3911660e | 1143 | fi |
8e31cf7e | 1144 | |
74bd2300 UD |
1145 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
1146 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
1147 | libc_cv_gcc_static_libgcc= | |
1148 | else | |
1149 | libc_cv_gcc_static_libgcc=-static-libgcc | |
1150 | fi]) | |
1151 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
1152 | ||
26f56c1c UD |
1153 | AC_PATH_PROG(BASH_SHELL, bash, no) |
1154 | if test "$BASH_SHELL" != no && | |
1155 | $BASH_SHELL -c 'test "$BASH_VERSINFO" \ | |
6973fc01 | 1156 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
1157 | libc_cv_have_bash2=yes |
1158 | else | |
1159 | libc_cv_have_bash2=no | |
1160 | fi | |
1161 | AC_SUBST(libc_cv_have_bash2) | |
1162 | ||
5290baf0 | 1163 | dnl We need a ksh compatible shell for tzselect. |
26f56c1c | 1164 | if test "$BASH_SHELL" = no; then |
5290baf0 UD |
1165 | AC_PATH_PROG(KSH, ksh, no) |
1166 | if test "$KSH" = no; then | |
1167 | libc_cv_have_ksh=no | |
1168 | else | |
1169 | libc_cv_have_ksh=yes | |
1170 | fi | |
1171 | else | |
26f56c1c | 1172 | KSH="$BASH_SHELL" |
5290baf0 UD |
1173 | AC_SUBST(KSH) |
1174 | libc_cv_have_ksh=yes | |
1175 | fi | |
1176 | AC_SUBST(libc_cv_have_ksh) | |
1177 | ||
5aa8ff62 | 1178 | AC_PROG_AWK |
c0016081 | 1179 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
1180 | if test "$PERL" != no && |
1181 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
1182 | PERL=no | |
ecb06196 | 1183 | fi |
2f512715 AS |
1184 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
1185 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
1186 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
1187 | ||
b8dc6a10 | 1188 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
1189 | echo '#include <stddef.h> |
1190 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
1191 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
1192 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
1193 | libc_cv_signed_size_t=no | |
1194 | else | |
1195 | libc_cv_signed_size_t=yes | |
1196 | fi | |
1197 | rm -f conftest*]) | |
28f540f4 RM |
1198 | if test $libc_cv_signed_size_t = yes; then |
1199 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
1200 | cat >> confdefs.h <<\EOF | |
1201 | #undef __SIZE_TYPE__ | |
1202 | #define __SIZE_TYPE__ unsigned | |
1203 | EOF | |
1204 | fi | |
1205 | ||
b8dc6a10 | 1206 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
1207 | AC_TRY_COMPILE(dnl |
1208 | [#define __need_size_t | |
1209 | #define __need_wchar_t | |
1210 | #include <stddef.h> | |
1211 | #define __need_NULL | |
1212 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
1213 | #ifdef offsetof | |
1214 | #error stddef.h ignored __need_* | |
1215 | #endif | |
1216 | if (&size == NULL || &wchar == NULL) abort ();], | |
77e8bddf AS |
1217 | libc_cv_friendly_stddef=yes, |
1218 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
1219 | if test $libc_cv_friendly_stddef = yes; then |
1220 | config_vars="$config_vars | |
1221 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
1222 | fi | |
1223 | ||
b8dc6a10 RM |
1224 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
1225 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
1226 | cat > conftest.S <<EOF |
1227 | #include "confdefs.h" | |
1228 | /* Nothing whatsoever. */ | |
1229 | EOF | |
3217788f | 1230 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
1231 | libc_cv_need_minus_P=no |
1232 | else | |
1233 | libc_cv_need_minus_P=yes | |
1234 | fi | |
1235 | rm -f conftest*]) | |
28f540f4 RM |
1236 | if test $libc_cv_need_minus_P = yes; then |
1237 | config_vars="$config_vars | |
1238 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
1239 | fi | |
1240 | ||
b8dc6a10 | 1241 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1242 | cat > conftest.s <<EOF |
2293395f | 1243 | ${libc_cv_dot_text} |
ae1025be | 1244 | foo: |
df2a0c93 | 1245 | .set glibc_conftest_frobozz,foo |
9a70fcab | 1246 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 1247 | EOF |
df2a0c93 RM |
1248 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1249 | # (but it doesn't work), so we must do a linking check to be sure. | |
1250 | cat > conftest1.c <<\EOF | |
1251 | extern int glibc_conftest_frobozz; | |
640f0119 | 1252 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1253 | EOF |
1254 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1255 | -nostartfiles -nostdlib \ |
0b4ee387 | 1256 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1257 | libc_cv_asm_set_directive=yes |
1258 | else | |
1259 | libc_cv_asm_set_directive=no | |
1260 | fi | |
65b3cbcb | 1261 | rm -f conftest*]) |
e215c478 RM |
1262 | if test $libc_cv_asm_set_directive = yes; then |
1263 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1264 | fi | |
1265 | ||
415ac3df UD |
1266 | AC_CACHE_CHECK(for assembler gnu_unique_object symbol type, |
1267 | libc_cv_asm_unique_object, [dnl | |
1268 | cat > conftest.s <<EOF | |
1269 | ${libc_cv_dot_text} | |
1270 | _sym: | |
1271 | .type _sym, ${libc_cv_asm_type_prefix}gnu_unique_object | |
1272 | EOF | |
1273 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then | |
1274 | libc_cv_asm_unique_object=yes | |
1275 | else | |
1276 | libc_cv_asm_unique_object=no | |
1277 | fi | |
1278 | rm -f conftest*]) | |
1279 | if test $libc_cv_asm_unique_object = yes; then | |
1280 | AC_DEFINE(HAVE_ASM_UNIQUE_OBJECT) | |
1281 | fi | |
1282 | ||
377a515b UD |
1283 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
1284 | [cat > conftest.s <<EOF | |
2293395f | 1285 | ${libc_cv_dot_text} |
4cca6b86 | 1286 | _sym: |
377a515b UD |
1287 | .symver _sym,sym@VERS |
1288 | EOF | |
3217788f | 1289 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1290 | libc_cv_asm_symver_directive=yes |
1291 | else | |
1292 | libc_cv_asm_symver_directive=no | |
1293 | fi | |
1294 | rm -f conftest*]) | |
1295 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1296 | if test $libc_cv_asm_symver_directive = yes; then | |
1297 | cat > conftest.s <<EOF | |
2293395f | 1298 | ${libc_cv_dot_text} |
4cca6b86 | 1299 | _sym: |
377a515b UD |
1300 | .symver _sym,sym@VERS |
1301 | EOF | |
1302 | cat > conftest.map <<EOF | |
f43ce637 | 1303 | VERS_1 { |
377a515b UD |
1304 | global: sym; |
1305 | }; | |
f43ce637 UD |
1306 | |
1307 | VERS_2 { | |
77e8bddf | 1308 | global: sym; |
f43ce637 | 1309 | } VERS_1; |
377a515b | 1310 | EOF |
3217788f RM |
1311 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1312 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1313 | -o conftest.so conftest.o | |
1314 | -nostartfiles -nostdlib | |
1315 | -Wl,--version-script,conftest.map | |
c2f55635 | 1316 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1317 | then |
1318 | libc_cv_ld_version_script_option=yes | |
1319 | else | |
1320 | libc_cv_ld_version_script_option=no | |
1321 | fi | |
1322 | else | |
1323 | libc_cv_ld_version_script_option=no | |
1324 | fi | |
1325 | else | |
1326 | libc_cv_ld_version_script_option=no | |
1327 | fi | |
1328 | rm -f conftest*]) | |
7499a22a RM |
1329 | if test $shared != no && |
1330 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1331 | test $libc_cv_ld_version_script_option = yes && |
1332 | test $enable_versioning = yes; then | |
377a515b UD |
1333 | VERSIONING=yes |
1334 | AC_DEFINE(DO_VERSIONING) | |
1335 | else | |
1336 | VERSIONING=no | |
1337 | fi | |
1338 | AC_SUBST(VERSIONING) | |
1339 | ||
102a3e8f | 1340 | if test $elf = yes && test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1341 | echo "\ |
f4017d20 | 1342 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1343 | *** versioning will introduce incompatibilities so that old binaries |
1344 | *** will not run anymore. | |
50304ef0 | 1345 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1346 | fi |
fd26970f UD |
1347 | if test $elf = yes; then |
1348 | AC_CACHE_CHECK(for .previous assembler directive, | |
1349 | libc_cv_asm_previous_directive, [dnl | |
1350 | cat > conftest.s <<EOF | |
1351 | .section foo_section | |
1352 | .previous | |
1353 | EOF | |
3217788f | 1354 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1355 | libc_cv_asm_previous_directive=yes |
1356 | else | |
1357 | libc_cv_asm_previous_directive=no | |
1358 | fi | |
1359 | rm -f conftest*]) | |
1360 | if test $libc_cv_asm_previous_directive = yes; then | |
1361 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1362 | else | |
1363 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1364 | libc_cv_asm_popsection_directive, [dnl | |
1365 | cat > conftest.s <<EOF | |
1366 | .pushsection foo_section | |
1367 | .popsection | |
1368 | EOF | |
3217788f | 1369 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1370 | libc_cv_asm_popsection_directive=yes |
1371 | else | |
1372 | libc_cv_asm_popsection_directive=no | |
1373 | fi | |
1374 | rm -f conftest*]) | |
1375 | if test $libc_cv_asm_popsection_directive = yes; then | |
1376 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
1377 | fi | |
1378 | fi | |
2d499f55 UD |
1379 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, |
1380 | libc_cv_asm_protected_directive, [dnl | |
1381 | cat > conftest.s <<EOF | |
1382 | .protected foo | |
1383 | foo: | |
1384 | .hidden bar | |
1385 | bar: | |
1386 | EOF | |
3217788f | 1387 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
2d499f55 UD |
1388 | libc_cv_asm_protected_directive=yes |
1389 | else | |
11bf311e | 1390 | AC_MSG_ERROR(assembler support for symbol visibility is required) |
2d499f55 UD |
1391 | fi |
1392 | rm -f conftest*]) | |
0fb7851f | 1393 | |
0d01dace UD |
1394 | if test $libc_cv_asm_protected_directive = yes; then |
1395 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
1396 | libc_cv_visibility_attribute, | |
1397 | [cat > conftest.c <<EOF | |
1398 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1399 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1400 | EOF | |
1401 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1402 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1403 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1404 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1405 | libc_cv_visibility_attribute=yes | |
1406 | fi | |
1407 | fi | |
1408 | fi | |
1409 | rm -f conftest.[cs] | |
1410 | ]) | |
11bf311e UD |
1411 | if test $libc_cv_visibility_attribute != yes; then |
1412 | AC_MSG_ERROR(compiler support for visibility attribute is required) | |
0d01dace UD |
1413 | fi |
1414 | fi | |
1415 | ||
37ba7d66 UD |
1416 | if test $libc_cv_visibility_attribute = yes; then |
1417 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
1418 | libc_cv_broken_visibility_attribute, | |
1419 | [cat > conftest.c <<EOF | |
1420 | int foo (int x); | |
1421 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1422 | int bar (int x) { return x; } | |
1423 | EOF | |
1424 | libc_cv_broken_visibility_attribute=yes | |
61cea1c3 | 1425 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1426 | changequote(,)dnl |
1427 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1428 | changequote([,])dnl | |
1429 | libc_cv_broken_visibility_attribute=no | |
1430 | fi | |
1431 | fi | |
1432 | rm -f conftest.c conftest.s | |
1433 | ]) | |
1434 | if test $libc_cv_broken_visibility_attribute = yes; then | |
11bf311e | 1435 | AC_MSG_ERROR(working compiler support for visibility attribute is required) |
37ba7d66 UD |
1436 | fi |
1437 | fi | |
1438 | ||
1439 | AC_CACHE_CHECK(for broken __attribute__((alias())), | |
1440 | libc_cv_broken_alias_attribute, | |
1441 | [cat > conftest.c <<EOF | |
1442 | extern int foo (int x) __asm ("xyzzy"); | |
1443 | int bar (int x) { return x; } | |
48b8e846 UD |
1444 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); |
1445 | extern int dfoo; | |
1446 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1447 | int dfoo = 1; | |
37ba7d66 UD |
1448 | EOF |
1449 | libc_cv_broken_alias_attribute=yes | |
61cea1c3 | 1450 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
48b8e846 UD |
1451 | if grep 'xyzzy' conftest.s >/dev/null && |
1452 | grep 'abccb' conftest.s >/dev/null; then | |
37ba7d66 UD |
1453 | libc_cv_broken_alias_attribute=no |
1454 | fi | |
1455 | fi | |
1456 | rm -f conftest.c conftest.s | |
1457 | ]) | |
1458 | if test $libc_cv_broken_alias_attribute = yes; then | |
11bf311e | 1459 | AC_MSG_ERROR(working alias attribute support required) |
37ba7d66 UD |
1460 | fi |
1461 | ||
57d44131 | 1462 | if test $libc_cv_visibility_attribute = yes; then |
0d01dace UD |
1463 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, |
1464 | libc_cv_have_sdata_section, | |
1465 | [echo "int i;" > conftest.c | |
1466 | libc_cv_have_sdata_section=no | |
dbc92dc6 | 1467 | if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1468 | | grep '\.sdata' >/dev/null; then |
1469 | libc_cv_have_sdata_section=yes | |
1470 | fi | |
1471 | rm -f conftest.c conftest.so | |
1472 | ]) | |
1473 | if test $libc_cv_have_sdata_section = yes; then | |
1474 | AC_DEFINE(HAVE_SDATA_SECTION) | |
1475 | fi | |
1476 | fi | |
1477 | ||
5241882c | 1478 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
ce33ee7c | 1479 | libc_cv_initfini_array, [dnl |
5241882c UD |
1480 | cat > conftest.c <<EOF |
1481 | int _start (void) { return 0; } | |
1482 | int __start (void) { return 0; } | |
1483 | int foo (void) { return 1; } | |
2c617417 | 1484 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
5241882c | 1485 | EOF |
3217788f | 1486 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c |
c2f55635 | 1487 | -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD]) |
5241882c UD |
1488 | then |
1489 | if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
ce33ee7c | 1490 | libc_cv_initfini_array=yes |
5241882c | 1491 | else |
ce33ee7c | 1492 | libc_cv_initfini_array=no |
5241882c UD |
1493 | fi |
1494 | else | |
ce33ee7c | 1495 | libc_cv_initfini_array=no |
5241882c UD |
1496 | fi |
1497 | rm -f conftest*]) | |
ce33ee7c UD |
1498 | if test $libc_cv_initfini_array != yes; then |
1499 | AC_MSG_ERROR([Need linker with .init_array/.fini_array support.]) | |
4a531bb0 L |
1500 | elif AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep SORT_BY_INIT_PRIORITY 1>&AS_MESSAGE_LOG_FD]); then |
1501 | AC_DEFINE(NO_CTORS_DTORS_SECTIONS) | |
5241882c UD |
1502 | fi |
1503 | ||
c776b3d7 | 1504 | AC_CACHE_CHECK(for libunwind-support in compiler, |
cbdb12de UD |
1505 | libc_cv_cc_with_libunwind, [ |
1506 | cat > conftest.c <<EOF | |
1507 | int main (void) { return 0; } | |
1508 | EOF | |
1509 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ | |
1510 | conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then | |
1511 | libc_cv_cc_with_libunwind=yes | |
1512 | else | |
1513 | libc_cv_cc_with_libunwind=no | |
1514 | fi | |
1515 | rm -f conftest*]) | |
c776b3d7 UD |
1516 | AC_SUBST(libc_cv_cc_with_libunwind) |
1517 | if test $libc_cv_cc_with_libunwind = yes; then | |
1518 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1519 | fi | |
1520 | ||
0fb7851f UD |
1521 | AC_CACHE_CHECK(for -z nodelete option, |
1522 | libc_cv_z_nodelete, [dnl | |
1523 | cat > conftest.c <<EOF | |
1524 | int _start (void) { return 42; } | |
1525 | EOF | |
3217788f | 1526 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1527 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1528 | -nostartfiles -nostdlib |
c2f55635 | 1529 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) |
0fb7851f UD |
1530 | then |
1531 | libc_cv_z_nodelete=yes | |
1532 | else | |
11bf311e | 1533 | AC_MSG_ERROR(linker with -z nodelete support required) |
0fb7851f UD |
1534 | fi |
1535 | rm -f conftest*]) | |
2f54c82d UD |
1536 | |
1537 | AC_CACHE_CHECK(for -z nodlopen option, | |
1538 | libc_cv_z_nodlopen, [dnl | |
1539 | cat > conftest.c <<EOF | |
1540 | int _start (void) { return 42; } | |
1541 | EOF | |
3217788f | 1542 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1543 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1544 | -nostartfiles -nostdlib |
c2f55635 | 1545 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
2f54c82d UD |
1546 | then |
1547 | libc_cv_z_nodlopen=yes | |
1548 | else | |
11bf311e | 1549 | AC_MSG_ERROR(linker with -z nodlopen support required) |
2f54c82d UD |
1550 | fi |
1551 | rm -f conftest*]) | |
5d916713 UD |
1552 | |
1553 | AC_CACHE_CHECK(for -z initfirst option, | |
1554 | libc_cv_z_initfirst, [dnl | |
1555 | cat > conftest.c <<EOF | |
1556 | int _start (void) { return 42; } | |
1557 | EOF | |
3217788f | 1558 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1559 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1560 | -nostartfiles -nostdlib |
c2f55635 | 1561 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
5d916713 UD |
1562 | then |
1563 | libc_cv_z_initfirst=yes | |
1564 | else | |
11bf311e | 1565 | AC_MSG_ERROR(linker with -z initfirst support required) |
5d916713 UD |
1566 | fi |
1567 | rm -f conftest*]) | |
639c3248 | 1568 | |
11bf311e UD |
1569 | case "$base_machine" in |
1570 | changequote(,)dnl | |
1571 | i[34567]86 | x86_64 | powerpc* | s390* | sparc* | alpha*) | |
1572 | changequote([,])dnl | |
1573 | AC_CACHE_CHECK(for -z relro option, | |
1574 | libc_cv_z_relro, [dnl | |
54beacab | 1575 | libc_cv_z_relro=no |
ed20b3d9 UD |
1576 | if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD]) |
1577 | then | |
54beacab UD |
1578 | if AC_TRY_COMMAND([${CC-cc} -Wl,--verbose 2>&1|grep DATA_SEGMENT_RELRO_END 1>&AS_MESSAGE_LOG_FD]) |
1579 | then | |
1580 | libc_cv_z_relro=yes | |
1581 | fi | |
ed20b3d9 | 1582 | fi]) |
11bf311e | 1583 | if test "$libc_cv_z_relro" = no; then |
77e8bddf | 1584 | AC_MSG_ERROR(linker with -z relro support required) |
11bf311e UD |
1585 | fi |
1586 | ;; | |
1587 | *) ;; | |
1588 | esac | |
ed20b3d9 | 1589 | |
639c3248 UD |
1590 | AC_CACHE_CHECK(for -Bgroup option, |
1591 | libc_cv_Bgroup, [dnl | |
1592 | cat > conftest.c <<EOF | |
1593 | int _start (void) { return 42; } | |
1594 | EOF | |
3217788f | 1595 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1596 | -fPIC -shared -o conftest.so conftest.c |
3217788f | 1597 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) |
639c3248 UD |
1598 | then |
1599 | libc_cv_Bgroup=yes | |
1600 | else | |
1601 | libc_cv_Bgroup=no | |
1602 | fi | |
1603 | rm -f conftest*]) | |
1604 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1605 | |
cdbf48be UD |
1606 | AC_CACHE_CHECK(for libgcc_s suffix, |
1607 | libc_cv_libgcc_s_suffix, [dnl | |
1608 | cat > conftest.c <<EOF | |
1609 | int main (void) { return 0; } | |
1610 | EOF | |
1611 | changequote(,)dnl | |
1612 | libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
dbc92dc6 | 1613 | -fPIC -shared -shared-libgcc -o conftest.so \ |
cdbf48be UD |
1614 | conftest.c -v 2>&1 >/dev/null \ |
1615 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
1616 | changequote([,])dnl | |
1617 | rm -f conftest*]) | |
1618 | AC_SUBST(libc_cv_libgcc_s_suffix) | |
1619 | ||
feca5e0b UD |
1620 | AC_CACHE_CHECK(for --as-needed option, |
1621 | libc_cv_as_needed, [dnl | |
1622 | cat > conftest.c <<EOF | |
1623 | int main (void) { return 0; } | |
1624 | EOF | |
1625 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
dbc92dc6 | 1626 | -fPIC -shared -o conftest.so conftest.c |
cdbf48be UD |
1627 | -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed |
1628 | -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
feca5e0b UD |
1629 | then |
1630 | libc_cv_as_needed=yes | |
1631 | else | |
1632 | libc_cv_as_needed=no | |
1633 | fi | |
1634 | rm -f conftest*]) | |
1635 | AC_SUBST(libc_cv_as_needed) | |
1636 | ||
35915ec8 UD |
1637 | ASFLAGS_config= |
1638 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1639 | libc_cv_as_noexecstack, [dnl | |
1640 | cat > conftest.c <<EOF | |
1641 | void foo (void) { } | |
1642 | EOF | |
1643 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS | |
1644 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
1645 | && grep -q .note.GNU-stack conftest.s \ | |
215a8745 | 1646 | && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack |
35915ec8 UD |
1647 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) |
1648 | then | |
1649 | libc_cv_as_noexecstack=yes | |
1650 | else | |
1651 | libc_cv_as_noexecstack=no | |
1652 | fi | |
1653 | rm -f conftest*]) | |
1654 | if test $libc_cv_as_noexecstack = yes; then | |
1655 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1656 | fi | |
1657 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1658 | |
a711b01d UD |
1659 | AC_CACHE_CHECK(for -z combreloc, |
1660 | libc_cv_z_combreloc, [dnl | |
1661 | cat > conftest.c <<EOF | |
d555194c UD |
1662 | extern int bar (int); |
1663 | extern int mumble; | |
1664 | int foo (void) { return bar (mumble); } | |
a711b01d | 1665 | EOF |
3217788f | 1666 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1667 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1668 | -nostdlib -nostartfiles |
c2f55635 | 1669 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a711b01d UD |
1670 | then |
1671 | dnl The following test is a bit weak. We must use a tool which can test | |
1672 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1673 | dnl introducing new options this is not easily doable. Instead use a tool | |
1674 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1675 | dnl look for a section named .rel.dyn. | |
fdde8349 UD |
1676 | if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1677 | libc_cv_z_combreloc=yes | |
1678 | else | |
1679 | libc_cv_z_combreloc=no | |
a711b01d | 1680 | fi |
fdde8349 UD |
1681 | else |
1682 | libc_cv_z_combreloc=no | |
a711b01d UD |
1683 | fi |
1684 | rm -f conftest*]) | |
fdde8349 UD |
1685 | if test "$libc_cv_z_combreloc" = yes; then |
1686 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1687 | fi | |
2abf9ff1 RM |
1688 | AC_SUBST(libc_cv_z_combreloc) |
1689 | ||
1690 | AC_CACHE_CHECK(for -z execstack, | |
1691 | libc_cv_z_execstack, [dnl | |
1692 | cat > conftest.c <<EOF | |
1693 | int _start (void) { return 42; } | |
1694 | EOF | |
1695 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
dbc92dc6 | 1696 | -fPIC -shared -o conftest.so conftest.c |
2abf9ff1 RM |
1697 | -Wl,-z,execstack -nostdlib |
1698 | 1>&AS_MESSAGE_LOG_FD]) | |
1699 | then | |
1700 | libc_cv_z_execstack=yes | |
1701 | else | |
1702 | libc_cv_z_execstack=no | |
1703 | fi | |
1704 | rm -f conftest*]) | |
1705 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 UD |
1706 | |
1707 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl | |
1708 | cat > conftest.c <<EOF | |
1709 | int foo; | |
49803108 | 1710 | main () { return 0;} |
c9c60884 UD |
1711 | EOF |
1712 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie | |
1713 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
1714 | then | |
1715 | libc_cv_fpie=yes | |
1716 | else | |
1717 | libc_cv_fpie=no | |
1718 | fi | |
1719 | rm -f conftest*]) | |
1720 | ||
1721 | AC_SUBST(libc_cv_fpie) | |
871b9158 UD |
1722 | |
1723 | AC_CACHE_CHECK(for --hash-style option, | |
1724 | libc_cv_hashstyle, [dnl | |
1725 | cat > conftest.c <<EOF | |
1726 | int _start (void) { return 42; } | |
1727 | EOF | |
1728 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
1729 | -fPIC -shared -o conftest.so conftest.c | |
1730 | -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1731 | then | |
1732 | libc_cv_hashstyle=yes | |
1733 | else | |
1734 | libc_cv_hashstyle=no | |
1735 | fi | |
1736 | rm -f conftest*]) | |
1737 | AC_SUBST(libc_cv_hashstyle) | |
fd26970f | 1738 | fi |
49803108 | 1739 | |
22dca1ea | 1740 | AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl |
49803108 AJ |
1741 | cat > conftest.c <<EOF |
1742 | int foo; | |
1743 | EOF | |
22dca1ea | 1744 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors |
49803108 AJ |
1745 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1746 | then | |
18e2ac6d | 1747 | libc_cv_fno_toplevel_reorder=yes |
49803108 | 1748 | else |
18e2ac6d | 1749 | libc_cv_fno_toplevel_reorder=no |
49803108 AJ |
1750 | fi |
1751 | rm -f conftest*]) | |
18e2ac6d | 1752 | if test $libc_cv_fno_toplevel_reorder = yes; then |
22dca1ea | 1753 | fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors" |
18e2ac6d | 1754 | else |
49803108 AJ |
1755 | fno_unit_at_a_time=-fno-unit-at-a-time |
1756 | fi | |
1757 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1758 | |
401a9ec9 UD |
1759 | AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl |
1760 | cat > conftest.c <<EOF | |
1761 | int foo; | |
1762 | main () { return 0;} | |
1763 | EOF | |
a40fbc8d | 1764 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -Werror -fstack-protector |
401a9ec9 UD |
1765 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1766 | then | |
1767 | libc_cv_ssp=yes | |
1768 | else | |
1769 | libc_cv_ssp=no | |
1770 | fi | |
1771 | rm -f conftest*]) | |
1772 | AC_SUBST(libc_cv_ssp) | |
1773 | ||
b037a293 UD |
1774 | AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl |
1775 | cat > conftest.c <<EOF | |
1776 | int foo; | |
1777 | #ifdef __GNUC_GNU_INLINE__ | |
1778 | main () { return 0;} | |
1779 | #else | |
1780 | #error | |
1781 | #endif | |
1782 | EOF | |
371f84a4 JJ |
1783 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline |
1784 | -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
b037a293 UD |
1785 | then |
1786 | libc_cv_gnu89_inline=yes | |
1787 | else | |
1788 | libc_cv_gnu89_inline=no | |
1789 | fi | |
1790 | rm -f conftest*]) | |
1791 | if test $libc_cv_gnu89_inline = yes; then | |
1c7570ff | 1792 | gnu89_inline=-fgnu89-inline |
b037a293 | 1793 | else |
1c7570ff | 1794 | gnu89_inline= |
b037a293 | 1795 | fi |
1c7570ff | 1796 | AC_SUBST(gnu89_inline) |
b037a293 | 1797 | |
b8dc6a10 RM |
1798 | if test $elf != yes; then |
1799 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
1800 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 | 1801 | asm (".section .fini"); |
2293395f | 1802 | asm ("${libc_cv_dot_text}");], |
b8dc6a10 RM |
1803 | libc_cv_have_initfini=yes, |
1804 | libc_cv_have_initfini=no)]) | |
1805 | AC_SUBST(libc_cv_have_initfini)dnl | |
1806 | if test $libc_cv_have_initfini = yes; then | |
1807 | AC_DEFINE(HAVE_INITFINI) | |
1808 | fi | |
1809 | fi | |
e215c478 | 1810 | |
57d44131 | 1811 | if test $elf = yes; then |
e26dd47f UD |
1812 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1813 | libc_cv_have_section_quotes, | |
1814 | [cat > conftest.c <<EOF | |
1815 | static const int foo | |
1816 | __attribute__ ((section ("bar"))) = 1; | |
1817 | EOF | |
1818 | if ${CC-cc} -S conftest.c -o conftest.s; then | |
1819 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1820 | libc_cv_have_section_quotes=yes | |
1821 | else | |
1822 | libc_cv_have_section_quotes=no | |
1823 | fi | |
1824 | else | |
1825 | libc_cv_have_section_quotes=unknown | |
1826 | fi | |
1827 | rm -f conftest.[cs] | |
1828 | ]) | |
1829 | if test $libc_cv_have_section_quotes = yes; then | |
1830 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
1831 | fi | |
1832 | fi | |
1833 | ||
9a0a462c UD |
1834 | dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
1835 | AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, | |
1836 | [cat > conftest.$ac_ext <<EOF | |
1837 | dnl This sometimes fails to find confdefs.h, for some reason. | |
85dd1003 UD |
1838 | dnl [#]line $LINENO "[$]0" |
1839 | [#]line $LINENO "configure" | |
9a0a462c UD |
1840 | #include "confdefs.h" |
1841 | void underscore_test(void) { | |
1842 | return; } | |
1843 | EOF | |
1844 | if AC_TRY_EVAL(ac_compile); then | |
1845 | if grep _underscore_test conftest* >/dev/null; then | |
1846 | ifelse([$1], , :, [rm -f conftest* | |
1847 | $1]) | |
1848 | else | |
1849 | ifelse([$2], , , [rm -f conftest* | |
1850 | $2]) | |
1851 | fi | |
1852 | else | |
c2f55635 RM |
1853 | echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD |
1854 | cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD | |
9a0a462c UD |
1855 | ifelse([$2], , , [rm -f conftest* |
1856 | $2]) | |
1857 | fi | |
1858 | rm -f conftest*]) | |
1859 | ||
c224a18a RM |
1860 | if test $elf = yes; then |
1861 | libc_cv_asm_underscores=no | |
1862 | else | |
9a0a462c UD |
1863 | if test $ac_cv_prog_cc_works = yes; then |
1864 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1865 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
77e8bddf AS |
1866 | libc_cv_asm_underscores=yes, |
1867 | libc_cv_asm_underscores=no)]) | |
9a0a462c UD |
1868 | else |
1869 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1870 | [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, | |
77e8bddf | 1871 | libc_cv_asm_underscores=no)]) |
9a0a462c | 1872 | fi |
c224a18a RM |
1873 | fi |
1874 | if test $libc_cv_asm_underscores = no; then | |
1875 | AC_DEFINE(NO_UNDERSCORES) | |
1876 | fi | |
1877 | ||
1878 | if test $elf = yes; then | |
1879 | libc_cv_weak_symbols=yes | |
9a97d1f7 UD |
1880 | fi |
1881 | ||
1882 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1883 | [dnl |
c224a18a | 1884 | cat > conftest.s <<EOF |
2293395f | 1885 | ${libc_cv_dot_text} |
c224a18a | 1886 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1887 | foo: |
c224a18a RM |
1888 | .weak foo |
1889 | .weak bar; bar = foo | |
1890 | EOF | |
3217788f | 1891 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1892 | libc_cv_asm_weak_directive=yes |
1893 | else | |
1894 | libc_cv_asm_weak_directive=no | |
1895 | fi | |
1896 | rm -f conftest*]) | |
c224a18a | 1897 | |
c8cf0b14 | 1898 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1899 | AC_CACHE_CHECK(for assembler .weakext directive, |
1900 | libc_cv_asm_weakext_directive, | |
1901 | [dnl | |
1902 | cat > conftest.s <<EOF | |
2293395f | 1903 | ${libc_cv_dot_text} |
c224a18a | 1904 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1905 | foo: |
f802accb UD |
1906 | .weakext bar foo |
1907 | .weakext baz | |
1908 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 1909 | baz: |
c224a18a | 1910 | EOF |
3217788f | 1911 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1912 | libc_cv_asm_weakext_directive=yes |
1913 | else | |
1914 | libc_cv_asm_weakext_directive=no | |
1915 | fi | |
1916 | rm -f conftest*]) | |
1917 | ||
9a97d1f7 | 1918 | fi # no .weak |
c224a18a | 1919 | |
ffcf9634 | 1920 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1921 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1922 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1923 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1924 | fi | |
1925 | ||
50189569 | 1926 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
ced368f7 UD |
1927 | case $machine in |
1928 | sparc/sparc64*) cfi_offset=2047;; | |
1929 | *) cfi_offset=0;; | |
1930 | esac | |
50189569 | 1931 | cat > conftest.s <<EOF |
77e8bddf AS |
1932 | .text |
1933 | .type func,%function | |
50189569 | 1934 | func: |
77e8bddf | 1935 | .cfi_startproc |
f212e8dc | 1936 | .cfi_remember_state |
ced368f7 | 1937 | .cfi_rel_offset 1, $cfi_offset |
77e8bddf | 1938 | .cfi_endproc |
50189569 AJ |
1939 | EOF |
1940 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1941 | libc_cv_asm_cfi_directives=yes | |
1942 | else | |
1943 | libc_cv_asm_cfi_directives=no | |
1944 | fi | |
1945 | rm -f conftest*]) | |
1946 | if test $libc_cv_asm_cfi_directives = yes; then | |
1947 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1948 | fi |
50189569 | 1949 | |
a641835a RM |
1950 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1951 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1952 | _start () {} |
dcf0671d UD |
1953 | int __eh_pc; |
1954 | __throw () {} | |
a641835a | 1955 | EOF |
dcea62dd | 1956 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1957 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1958 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1959 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1960 | libc_cv_ld_no_whole_archive=yes |
1961 | else | |
1962 | libc_cv_ld_no_whole_archive=no | |
1963 | fi | |
1964 | rm -f conftest*]) | |
b17277cf UD |
1965 | if test $libc_cv_ld_no_whole_archive = yes; then |
1966 | no_whole_archive=-Wl,--no-whole-archive | |
1967 | fi | |
1968 | AC_SUBST(no_whole_archive)dnl | |
a641835a | 1969 | |
dff14448 | 1970 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1971 | cat > conftest.c <<\EOF |
1972 | _start () {} | |
1973 | int __eh_pc; | |
1974 | __throw () {} | |
1975 | EOF | |
1976 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1977 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1978 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1979 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1980 | libc_cv_gcc_exceptions=yes |
b236e99d | 1981 | else |
dff14448 | 1982 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1983 | fi |
1984 | rm -f conftest*]) | |
dff14448 UD |
1985 | if test $libc_cv_gcc_exceptions = yes; then |
1986 | exceptions=-fexceptions | |
b17277cf | 1987 | fi |
dff14448 | 1988 | AC_SUBST(exceptions)dnl |
b236e99d | 1989 | |
66000494 UD |
1990 | if test "$host_cpu" = powerpc ; then |
1991 | # Check for a bug present in at least versions 2.8.x of GCC | |
1992 | # and versions 1.0.x of EGCS. | |
1993 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1994 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1995 | libc_cv_c_asmcr0_bug='no', | |
1996 | libc_cv_c_asmcr0_bug='yes')]) | |
1997 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1998 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1999 | fi | |
2000 | fi | |
2001 | ||
a8eab8b1 UD |
2002 | dnl Check whether compiler understands __builtin_expect. |
2003 | AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, | |
2004 | [cat > conftest.c <<EOF | |
85dd1003 | 2005 | #line $LINENO "configure" |
a8eab8b1 UD |
2006 | int foo (int a) |
2007 | { | |
2008 | a = __builtin_expect (a, 10); | |
2009 | return a == 10 ? 0 : 1; | |
2010 | } | |
2011 | EOF | |
2012 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 2013 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles |
c2f55635 | 2014 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then |
a8eab8b1 UD |
2015 | libc_cv_gcc_builtin_expect=yes |
2016 | else | |
2017 | libc_cv_gcc_builtin_expect=no | |
2018 | fi | |
2019 | rm -f conftest*]) | |
2020 | if test "$libc_cv_gcc_builtin_expect" = yes; then | |
2021 | AC_DEFINE(HAVE_BUILTIN_EXPECT) | |
2022 | fi | |
2023 | ||
d555194c UD |
2024 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
2025 | cat > conftest.c <<\EOF | |
2026 | void zero (void *x) | |
2027 | { | |
a52d1562 | 2028 | __builtin_memset (x, 0, 1000); |
d555194c UD |
2029 | } |
2030 | EOF | |
2031 | dnl | |
2032 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
2033 | then | |
2034 | libc_cv_gcc_builtin_memset=no | |
2035 | else | |
2036 | libc_cv_gcc_builtin_memset=yes | |
2037 | fi | |
2038 | rm -f conftest* ]) | |
2039 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
2040 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
2041 | fi | |
2042 | ||
85dd1003 UD |
2043 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
2044 | cat > conftest.c <<\EOF | |
2045 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
2046 | char *foo (const char *a, const char *b) | |
2047 | { | |
2048 | return __builtin_strstr (a, b); | |
2049 | } | |
2050 | EOF | |
2051 | dnl | |
2052 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
2053 | then | |
2054 | libc_cv_gcc_builtin_redirection=yes | |
2055 | else | |
2056 | libc_cv_gcc_builtin_redirection=no | |
2057 | fi | |
2058 | rm -f conftest* ]) | |
2059 | if test "$libc_cv_gcc_builtin_redirection" = yes ; then | |
2060 | AC_DEFINE(HAVE_BUILTIN_REDIRECTION) | |
2061 | fi | |
2062 | ||
739d440d | 2063 | dnl Check whether the compiler supports the __thread keyword. |
5b8f26b4 RM |
2064 | if test "x$use__thread" != xno; then |
2065 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, | |
2066 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
2067 | __thread int a = 42; |
2068 | EOF | |
3217788f | 2069 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
5b8f26b4 RM |
2070 | libc_cv_gcc___thread=yes |
2071 | else | |
2072 | libc_cv_gcc___thread=no | |
2073 | fi | |
2074 | rm -f conftest*]) | |
2075 | if test "$libc_cv_gcc___thread" = yes; then | |
2076 | AC_DEFINE(HAVE___THREAD) | |
2077 | fi | |
739d440d UD |
2078 | else |
2079 | libc_cv_gcc___thread=no | |
2080 | fi | |
739d440d | 2081 | |
9b21e6bc RM |
2082 | if test "$libc_cv_gcc___thread" = yes; then |
2083 | dnl Check whether the compiler supports the tls_model attribute. | |
2084 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
2085 | cat > conftest.c <<\EOF | |
2086 | extern __thread int a __attribute__((tls_model ("initial-exec"))); | |
2087 | EOF | |
3217788f | 2088 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
9b21e6bc RM |
2089 | libc_cv_gcc_tls_model_attr=yes |
2090 | else | |
2091 | libc_cv_gcc_tls_model_attr=no | |
2092 | fi | |
2093 | rm -f conftest*]) | |
2094 | if test "$libc_cv_gcc_tls_model_attr" = yes; then | |
2095 | AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE) | |
2096 | fi | |
2097 | fi | |
739d440d | 2098 | |
2cf9ad57 RM |
2099 | if test -n "$submachine"; then |
2100 | AC_CACHE_CHECK([for compiler option for CPU variant], | |
2101 | libc_cv_cc_submachine, [dnl | |
2102 | libc_cv_cc_submachine=no | |
2103 | for opt in "-march=$submachine" "-mcpu=$submachine"; do | |
2104 | if AC_TRY_COMMAND([${CC-cc} $opt -xc /dev/null -S -o /dev/null]); then | |
2105 | libc_cv_cc_submachine="$opt" | |
2106 | break | |
2107 | fi | |
2108 | done]) | |
2109 | if test "x$libc_cv_cc_submachine" = xno; then | |
2110 | AC_MSG_ERROR([${CC-cc} does not support $submachine]) | |
2111 | fi | |
2112 | fi | |
2113 | AC_SUBST(libc_cv_cc_submachine) | |
2114 | ||
c8f3e6db UD |
2115 | dnl Check whether we have the gd library available. |
2116 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
2117 | if test "$with_gd" != "no"; then |
2118 | old_CFLAGS="$CFLAGS" | |
2119 | CFLAGS="$CFLAGS $libgd_include" | |
2120 | old_LDFLAGS="$LDFLAGS" | |
2121 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
2122 | old_LIBS="$LIBS" | |
2123 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
2124 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
2125 | CFLAGS="$old_CFLAGS" | |
2126 | LDFLAGS="$old_LDFLAGS" | |
2127 | LIBS="$old_LIBS" | |
2128 | else | |
2129 | LIBGD=no | |
2130 | fi | |
c8f3e6db UD |
2131 | AC_MSG_RESULT($LIBGD) |
2132 | AC_SUBST(LIBGD) | |
3d558f4e | 2133 | |
2fff3d93 UD |
2134 | # SELinux detection |
2135 | if test x$with_selinux = xno ; then | |
2136 | have_selinux=no; | |
2137 | else | |
2138 | # See if we have the SELinux library | |
2139 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
2140 | have_selinux=yes, have_selinux=no) | |
2141 | # See if we have the SELinux header with the NSCD permissions in it. | |
2142 | if test x$have_selinux = xyes ; then | |
2143 | AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h]) | |
2144 | AC_TRY_COMPILE([#include <selinux/av_permissions.h>], | |
2145 | [#ifdef NSCD__SHMEMHOST | |
2146 | return 0; | |
2147 | #else | |
2148 | #error NSCD__SHMEMHOST not defined | |
2149 | #endif], | |
2150 | have_selinux=yes, have_selinux=no) | |
2151 | AC_MSG_RESULT($have_selinux) | |
2152 | fi | |
2153 | ||
49155d51 | 2154 | if test x$with_selinux = xyes ; then |
2fff3d93 | 2155 | if test x$have_selinux = xno ; then |
49155d51 | 2156 | AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found]) |
2fff3d93 UD |
2157 | fi |
2158 | fi | |
2159 | fi | |
2160 | # Check if we're building with SELinux support. | |
2161 | if test "x$have_selinux" = xyes; then | |
943db9eb | 2162 | AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) |
ec23b9be UD |
2163 | |
2164 | # See if we have the libaudit library | |
943db9eb | 2165 | AC_CHECK_LIB(audit, audit_log_user_avc_message, |
77e8bddf | 2166 | have_libaudit=yes, have_libaudit=no) |
ec23b9be | 2167 | if test "x$have_libaudit" = xyes; then |
943db9eb | 2168 | AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) |
ec23b9be UD |
2169 | fi |
2170 | AC_SUBST(have_libaudit) | |
1f063dca UD |
2171 | |
2172 | # See if we have the libcap library | |
2173 | AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) | |
2174 | if test "x$have_libcap" = xyes; then | |
2175 | AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) | |
2176 | fi | |
2177 | AC_SUBST(have_libcap) | |
2fff3d93 UD |
2178 | fi |
2179 | AC_SUBST(have_selinux) | |
2180 | ||
8ed1e7d5 GK |
2181 | dnl check for the size of 'long double'. |
2182 | AC_CHECK_SIZEOF(long double, 0) | |
2183 | sizeof_long_double=$ac_cv_sizeof_long_double | |
2184 | AC_SUBST(sizeof_long_double) | |
2185 | ||
c224a18a RM |
2186 | ### End of automated tests. |
2187 | ### Now run sysdeps configure fragments. | |
2188 | ||
cb343854 | 2189 | # They also can set these variables. |
591e1ffb | 2190 | use_ldconfig=no |
cb343854 | 2191 | ldd_rewrite_script=no |
77259608 | 2192 | libc_cv_sysconfdir=$sysconfdir |
74bd2300 | 2193 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 2194 | libc_cv_idn=no |
cb343854 | 2195 | |
28f540f4 | 2196 | # Iterate over all the sysdep directories we will use, running their |
09055553 | 2197 | # configure fragments. |
28f540f4 | 2198 | for dir in $sysnames; do |
57ba7bb4 UD |
2199 | case $dir in |
2200 | /*) dest=$dir ;; | |
2201 | *) dest=$srcdir/$dir ;; | |
2202 | esac | |
2203 | if test -r $dest/configure; then | |
d1149385 | 2204 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 2205 | . $dest/configure |
28f540f4 | 2206 | fi |
28f540f4 RM |
2207 | done |
2208 | ||
74bd2300 UD |
2209 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
2210 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
2211 | fi | |
2212 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
2213 | ||
a8c01776 RM |
2214 | dnl This is tested by existing code and it's simpler to avoid changing it. |
2215 | AC_DEFINE(USE_IN_LIBIO) | |
96aa2d94 | 2216 | |
a53bad16 UD |
2217 | # Test for old glibc 2.0.x headers so that they can be removed properly |
2218 | # Search only in includedir. | |
2219 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 2220 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
2221 | then |
2222 | old_glibc_headers=yes | |
2223 | else | |
2224 | old_glibc_headers=no | |
2225 | fi | |
2226 | AC_MSG_RESULT($old_glibc_headers) | |
2227 | if test ${old_glibc_headers} = yes; then | |
2228 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2229 | AC_MSG_WARN(*** be removed.) | |
2230 | fi | |
b195f6bc | 2231 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2232 | |
84384f5b | 2233 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2234 | AC_SUBST(libc_cv_localedir) |
77259608 | 2235 | AC_SUBST(libc_cv_sysconfdir) |
1ef32c3d | 2236 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2237 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2238 | |
58a4b51a RM |
2239 | dnl sysdeps/CPU/configure.in checks set this via arch-specific asm tests |
2240 | AC_SUBST(libc_cv_cpp_asm_debuginfo) | |
06e51c8f | 2241 | AC_SUBST(libc_cv_cc_sse4) |
b0ecde3a | 2242 | AC_SUBST(libc_cv_cc_avx) |
091023f5 | 2243 | AC_SUBST(libc_cv_cc_novzeroupper) |
01f1f5ee | 2244 | AC_SUBST(libc_cv_as_i686) |
58a4b51a | 2245 | |
591e1ffb | 2246 | AC_SUBST(use_ldconfig) |
cb343854 | 2247 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2248 | |
d0b2cbf8 | 2249 | AC_SUBST(elf) AC_SUBST(xcoff) |
28f540f4 RM |
2250 | if test $elf = yes; then |
2251 | AC_DEFINE(HAVE_ELF) | |
2252 | fi | |
5af3245a UD |
2253 | if test $xcoff = yes; then |
2254 | AC_DEFINE(HAVE_XCOFF) | |
2255 | fi | |
28f540f4 | 2256 | |
650425ce | 2257 | AC_SUBST(static) |
ff3d7ed3 RM |
2258 | AC_SUBST(shared) |
2259 | if test $shared = default; then | |
57d44131 | 2260 | shared=$elf |
a334319f UD |
2261 | fi |
2262 | ||
ff886b82 UD |
2263 | AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default, |
2264 | [libc_cv_pic_default=yes | |
cc3fa755 | 2265 | cat > conftest.c <<EOF |
9756dfe1 | 2266 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2267 | # error PIC is default. |
2268 | #endif | |
2269 | EOF | |
0b4ee387 | 2270 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
ff886b82 | 2271 | libc_cv_pic_default=no |
cc3fa755 UD |
2272 | fi |
2273 | rm -f conftest.*]) | |
ff886b82 | 2274 | AC_SUBST(libc_cv_pic_default) |
cc3fa755 | 2275 | |
ff3d7ed3 RM |
2276 | AC_SUBST(profile) |
2277 | AC_SUBST(omitfp) | |
5a97622d | 2278 | AC_SUBST(bounded) |
5107cf1d | 2279 | AC_SUBST(static_nss) |
5ae3e846 | 2280 | AC_SUBST(nopic_initfini) |
ff3d7ed3 | 2281 | |
edf5b2d7 UD |
2282 | AC_SUBST(DEFINES) |
2283 | ||
61c83c3f RM |
2284 | dnl See sysdeps/mach/configure.in for this variable. |
2285 | AC_SUBST(mach_interface_list) | |
2286 | ||
28f540f4 RM |
2287 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
2288 | config_makefile= | |
2289 | else | |
2290 | config_makefile=Makefile | |
2291 | fi | |
2292 | ||
ee74a442 UD |
2293 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2294 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2295 | AC_SUBST(VERSION) |
ee74a442 | 2296 | AC_SUBST(RELEASE) |
df4ef2ab | 2297 | |
09055553 | 2298 | AC_CONFIG_FILES([config.make ${config_makefile}]) |
c118d634 | 2299 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
2300 | case $CONFIG_FILES in *config.make*) |
2301 | echo "$config_vars" >> config.make;; | |
2302 | esac | |
c118d634 RM |
2303 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2304 | AC_OUTPUT |