]>
Commit | Line | Data |
---|---|---|
f4017d20 | 1 | dnl Process this file with autoconf to produce a configure script. |
3a12e572 | 2 | AC_PREREQ(2.53)dnl dnl Minimum Autoconf version required. |
f318beb8 | 3 | AC_INIT([GNU C Library], [(see version.h)], [http://sourceware.org/bugzilla/], [glibc]) |
5d77b1da | 4 | AC_CONFIG_SRCDIR([include/features.h]) |
6b7f6183 RM |
5 | AC_CONFIG_HEADERS([config.h]) |
6 | AC_CONFIG_AUX_DIR([scripts]) | |
28f540f4 | 7 | |
7967983f RM |
8 | dnl This is here so we can set $subdirs directly based on configure fragments. |
9 | AC_CONFIG_SUBDIRS() | |
10 | ||
c16a054d AS |
11 | AC_CANONICAL_HOST |
12 | ||
c0bac8b0 UD |
13 | AC_PROG_CC |
14 | if test $host != $build; then | |
15 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
16 | fi | |
17 | AC_SUBST(cross_compiling) | |
18 | AC_PROG_CPP | |
19 | # We need the C++ compiler only for testing. | |
20 | AC_PROG_CXX | |
21 | ||
c72637d4 RM |
22 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
23 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
24 | fi | |
25 | ||
28f540f4 RM |
26 | # This will get text that should go into config.make. |
27 | config_vars= | |
28 | ||
c8f3e6db | 29 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 | 30 | AC_ARG_WITH([gd], |
77e8bddf AS |
31 | AC_HELP_STRING([--with-gd=DIR], |
32 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
33 | [dnl |
34 | case "$with_gd" in | |
f5f7239f UD |
35 | yes|''|no) ;; |
36 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
37 | libgd_ldflags="-L$withval/lib" ;; |
38 | esac | |
39 | ]) | |
6b7f6183 | 40 | AC_ARG_WITH([gd-include], |
77e8bddf AS |
41 | AC_HELP_STRING([--with-gd-include=DIR], |
42 | [find libgd include files in DIR]), | |
43 | [dnl | |
f5f7239f UD |
44 | case "$with_gd_include" in |
45 | ''|no) ;; | |
46 | *) libgd_include="-I$withval" ;; | |
47 | esac | |
48 | ]) | |
6b7f6183 | 49 | AC_ARG_WITH([gd-lib], |
77e8bddf AS |
50 | AC_HELP_STRING([--with-gd-lib=DIR], |
51 | [find libgd library files in DIR]), | |
52 | [dnl | |
f5f7239f UD |
53 | case "$with_gd_lib" in |
54 | ''|no) ;; | |
55 | *) libgd_ldflags="-L$withval" ;; | |
56 | esac | |
57 | ]) | |
58 | ||
59 | if test -n "$libgd_include"; then | |
60 | config_vars="$config_vars | |
cf90163d | 61 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
62 | fi |
63 | if test -n "$libgd_ldflags"; then | |
64 | config_vars="$config_vars | |
65 | libgd-LDFLAGS = $libgd_ldflags" | |
66 | fi | |
28f540f4 | 67 | |
ff3d7ed3 | 68 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 | 69 | AC_ARG_WITH([fp], |
77e8bddf AS |
70 | AC_HELP_STRING([--with-fp], |
71 | [if using floating-point hardware @<:@default=yes@:>@]), | |
6b7f6183 RM |
72 | [with_fp=$withval], |
73 | [with_fp=yes]) | |
675322a5 | 74 | AC_SUBST(with_fp) |
6b7f6183 | 75 | AC_ARG_WITH([binutils], |
77e8bddf AS |
76 | AC_HELP_STRING([--with-binutils=PATH], |
77 | [specify location of binutils (as and ld)]), | |
6b7f6183 RM |
78 | [path_binutils=$withval], |
79 | [path_binutils='']) | |
2fff3d93 | 80 | AC_ARG_WITH([selinux], |
77e8bddf AS |
81 | AC_HELP_STRING([--with-selinux], |
82 | [if building with SELinux support]), | |
2fff3d93 UD |
83 | [with_selinux=$withval], |
84 | [with_selinux=auto]) | |
28f540f4 | 85 | |
6b7f6183 | 86 | AC_ARG_WITH([headers], |
77e8bddf AS |
87 | AC_HELP_STRING([--with-headers=PATH], |
88 | [location of system headers to use | |
6b7f6183 RM |
89 | (for example /usr/src/linux/include) |
90 | @<:@default=compiler default@:>@]), | |
91 | [sysheaders=$withval], | |
92 | [sysheaders='']) | |
dbe7a0f5 | 93 | |
f781ef40 RM |
94 | AC_SUBST(use_default_link) |
95 | AC_ARG_WITH([default-link], | |
96 | AC_HELP_STRING([--with-default-link], | |
fd5e21c7 | 97 | [do not use explicit linker scripts]), |
f781ef40 | 98 | [use_default_link=$withval], |
fd5e21c7 | 99 | [use_default_link=default]) |
f781ef40 | 100 | |
6b7f6183 | 101 | AC_ARG_ENABLE([sanity-checks], |
77e8bddf AS |
102 | AC_HELP_STRING([--disable-sanity-checks], |
103 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
6b7f6183 RM |
104 | [enable_sanity=$enableval], |
105 | [enable_sanity=yes]) | |
a18f587d | 106 | |
7dbde9db RM |
107 | AC_SUBST(enable_check_abi) |
108 | AC_ARG_ENABLE([check-abi], | |
fd54683c RM |
109 | AC_HELP_STRING([--enable-check-abi], |
110 | [do "make check-abi" in "make check" (no/warn/yes) | |
111 | @<:@default=no@:>@]), | |
7dbde9db | 112 | [enable_check_abi=$enableval], |
fd54683c | 113 | [enable_check_abi=no]) |
7dbde9db | 114 | |
6b7f6183 | 115 | AC_ARG_ENABLE([shared], |
77e8bddf | 116 | AC_HELP_STRING([--enable-shared], |
a0da5fe1 | 117 | [build shared library @<:@default=yes if GNU ld@:>@]), |
6b7f6183 | 118 | [shared=$enableval], |
a0da5fe1 | 119 | [shared=yes]) |
6b7f6183 | 120 | AC_ARG_ENABLE([profile], |
77e8bddf AS |
121 | AC_HELP_STRING([--enable-profile], |
122 | [build profiled library @<:@default=no@:>@]), | |
6b7f6183 | 123 | [profile=$enableval], |
11bf311e | 124 | [profile=no]) |
6b7f6183 | 125 | AC_ARG_ENABLE([versioning], |
77e8bddf AS |
126 | AC_HELP_STRING([--disable-versioning], |
127 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
6b7f6183 RM |
128 | [enable_versioning=$enableval], |
129 | [enable_versioning=yes]) | |
130 | ||
131 | AC_ARG_ENABLE([oldest-abi], | |
77e8bddf AS |
132 | AC_HELP_STRING([--enable-oldest-abi=ABI], |
133 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
6b7f6183 RM |
134 | [oldest_abi=$enableval], |
135 | [oldest_abi=no]) | |
62ab42d6 UD |
136 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
137 | oldest_abi=default | |
138 | else | |
139 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
140 | fi | |
141 | AC_SUBST(oldest_abi) | |
142 | ||
35f1e827 UD |
143 | AC_ARG_ENABLE([stackguard-randomization], |
144 | AC_HELP_STRING([--enable-stackguard-randomization], | |
145 | [initialize __stack_chk_guard canary with a random number at program start]), | |
146 | [enable_stackguard_randomize=$enableval], | |
147 | [enable_stackguard_randomize=no]) | |
148 | if test "$enable_stackguard_randomize" = yes; then | |
149 | AC_DEFINE(ENABLE_STACKGUARD_RANDOMIZE) | |
150 | fi | |
151 | ||
6b3a2224 | 152 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 | 153 | AC_ARG_ENABLE([add-ons], |
77e8bddf AS |
154 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], |
155 | [configure and build add-ons in DIR1,DIR2,... | |
156 | search for add-ons if no parameter given]), | |
e0a3ed4f | 157 | , [enable_add_ons=yes]) |
61952351 | 158 | |
6b7f6183 | 159 | AC_ARG_ENABLE([hidden-plt], |
77e8bddf AS |
160 | AC_HELP_STRING([--disable-hidden-plt], |
161 | [do not hide internal function calls to avoid PLT]), | |
6b7f6183 RM |
162 | [hidden=$enableval], |
163 | [hidden=yes]) | |
749a9a4f RM |
164 | if test "x$hidden" = xno; then |
165 | AC_DEFINE(NO_HIDDEN) | |
166 | fi | |
167 | ||
4df8c11d UD |
168 | AC_ARG_ENABLE([bind-now], |
169 | AC_HELP_STRING([--enable-bind-now], | |
170 | [disable lazy relocations in DSOs]), | |
171 | [bindnow=$enableval], | |
172 | [bindnow=no]) | |
173 | AC_SUBST(bindnow) | |
174 | ||
5107cf1d UD |
175 | dnl On some platforms we cannot use dynamic loading. We must provide |
176 | dnl static NSS modules. | |
6b7f6183 | 177 | AC_ARG_ENABLE([static-nss], |
77e8bddf AS |
178 | AC_HELP_STRING([--enable-static-nss], |
179 | [build static NSS modules @<:@default=no@:>@]), | |
6b7f6183 RM |
180 | [static_nss=$enableval], |
181 | [static_nss=no]) | |
834cef7c UD |
182 | dnl Enable static NSS also if we build no shared objects. |
183 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 184 | static_nss=yes |
5107cf1d UD |
185 | AC_DEFINE(DO_STATIC_NSS) |
186 | fi | |
187 | ||
6b7f6183 | 188 | AC_ARG_ENABLE([force-install], |
77e8bddf AS |
189 | AC_HELP_STRING([--disable-force-install], |
190 | [don't force installation of files from this package, even if they are older than the installed files]), | |
6b7f6183 RM |
191 | [force_install=$enableval], |
192 | [force_install=yes]) | |
73237de3 UD |
193 | AC_SUBST(force_install) |
194 | ||
958f238f UD |
195 | dnl On some platforms we allow dropping compatibility with all kernel |
196 | dnl versions. | |
6b7f6183 | 197 | AC_ARG_ENABLE([kernel], |
77e8bddf AS |
198 | AC_HELP_STRING([--enable-kernel=VERSION], |
199 | [compile for compatibility with kernel not older than VERSION]), | |
6b7f6183 RM |
200 | [minimum_kernel=$enableval], |
201 | []) | |
86cfe82d UD |
202 | dnl Prevent unreasonable values. |
203 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
204 | # Better nothing than this. | |
205 | minimum_kernel="" | |
269e369f UD |
206 | else |
207 | if test "$minimum_kernel" = current; then | |
208 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
209 | fi | |
86cfe82d | 210 | fi |
958f238f | 211 | |
6cc7d725 UD |
212 | dnl For the development we sometimes want gcc to issue even more warnings. |
213 | dnl This is not the default since many of the extra warnings are not | |
214 | dnl appropriate. | |
6b7f6183 RM |
215 | AC_ARG_ENABLE([all-warnings], |
216 | AC_HELP_STRING([--enable-all-warnings], | |
77e8bddf | 217 | [enable all useful warnings gcc can issue]), |
6b7f6183 RM |
218 | [all_warnings=$enableval], |
219 | []) | |
6cc7d725 UD |
220 | AC_SUBST(all_warnings) |
221 | ||
425ce2ed UD |
222 | AC_ARG_ENABLE([multi-arch], |
223 | AC_HELP_STRING([--enable-multi-arch], | |
224 | [enable single DSO with optimizations for multiple architectures]), | |
225 | [multi_arch=$enableval], | |
6f89d2f3 | 226 | [multi_arch=default]) |
425ce2ed | 227 | |
ff886b82 UD |
228 | AC_ARG_ENABLE([nss-crypt], |
229 | AC_HELP_STRING([--enable-nss-crypt], | |
230 | [enable libcrypt to use nss]), | |
231 | [nss_crypt=$enableval], | |
232 | [nss_crypt=no]) | |
233 | if test x$nss_crypt = xyes; then | |
234 | nss_includes=-I$(nss-config --includedir 2>/dev/null) | |
235 | if test $? -ne 0; then | |
236 | AC_MSG_ERROR([cannot find include directory with nss-config]) | |
237 | fi | |
238 | old_CFLAGS="$CFLAGS" | |
239 | CFLAGS="$CFLAGS $nss_includes" | |
b68e08db | 240 | AC_COMPILE_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; |
ff886b82 UD |
241 | #include <hasht.h> |
242 | #include <nsslowhash.h> | |
b68e08db | 243 | void f (void) { NSSLOW_Init (); }])], |
ff886b82 UD |
244 | libc_cv_nss_crypt=yes, |
245 | AC_MSG_ERROR([ | |
246 | cannot find NSS headers with lowlevel hash function interfaces])) | |
247 | old_LIBS="$LIBS" | |
248 | LIBS="$LIBS -lfreebl3" | |
249 | AC_LINK_IFELSE([AC_LANG_PROGRAM([typedef int PRBool; | |
250 | #include <hasht.h> | |
251 | #include <nsslowhash.h>], | |
252 | [NSSLOW_Init();])], | |
253 | libc_cv_nss_crypt=yes, | |
254 | AC_MSG_ERROR([ | |
255 | cannot link program using lowlevel NSS hash functions])) | |
256 | CFLAGS="$old_CFLAGS" | |
257 | LIBS="$old_LIBS" | |
258 | else | |
259 | libc_cv_nss_crypt=no | |
260 | fi | |
261 | AC_SUBST(libc_cv_nss_crypt) | |
262 | ||
8a523922 UD |
263 | # The way shlib-versions is used to generate soversions.mk uses a |
264 | # fairly simplistic model for name recognition that can't distinguish | |
265 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
266 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
267 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
268 | case "$host_os" in | |
269 | linux*) | |
270 | ;; | |
271 | gnu*) | |
272 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
273 | ;; | |
274 | esac | |
275 | ||
28f540f4 RM |
276 | # We keep the original values in `$config_*' and never modify them, so we |
277 | # can write them unchanged into config.make. Everything else uses | |
278 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
279 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
280 | ||
2f64b655 UD |
281 | # Don't allow vendor == "unknown" |
282 | test "$config_vendor" = unknown && config_vendor= | |
283 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
284 | ||
a2fe9c76 | 285 | # Some configurations imply other options. |
0269750c | 286 | elf=yes |
a2fe9c76 | 287 | |
8f73811b RM |
288 | # The configure fragment of an add-on port can modify these to supplement |
289 | # or override the table in the case statement below. No fragment should | |
290 | # ever change the config_* variables, however. | |
28f540f4 RM |
291 | machine=$config_machine |
292 | vendor=$config_vendor | |
293 | os=$config_os | |
b22d21b3 | 294 | base_os='' |
28f540f4 | 295 | |
a808d541 UD |
296 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
297 | # Unify this here. | |
298 | if test "$machine" = rs6000; then | |
299 | machine="powerpc" | |
300 | fi | |
301 | ||
f4b07664 RM |
302 | # Braindead PowerPC box with absolutely no FPU. |
303 | case "$machine-$host_os" in | |
304 | powerpc*-*soft) | |
305 | with_fp=no | |
306 | ;; | |
307 | esac | |
308 | ||
2ceaa76a RM |
309 | submachine= |
310 | AC_ARG_WITH([cpu], | |
311 | AS_HELP_STRING([--with-cpu=CPU], [select code for CPU variant]), | |
312 | [dnl | |
313 | case "$withval" in | |
314 | yes|'') AC_MSG_ERROR([--with-cpu requires an argument]) ;; | |
315 | no) ;; | |
316 | *) submachine="$withval" ;; | |
317 | esac | |
318 | ]) | |
319 | ||
10a803e0 RM |
320 | dnl Let sysdeps/*/preconfigure act here, like they can in add-ons. |
321 | LIBC_PRECONFIGURE([$srcdir], [for sysdeps]) | |
322 | ||
e0a3ed4f | 323 | # An add-on can set this when it wants to disable the sanity check below. |
8f73811b RM |
324 | libc_config_ok=no |
325 | ||
326 | dnl Having this here, though empty, makes sure that if add-ons' fragments | |
327 | dnl do AC_CONFIG_SUBDIRS([some-dir]), which just sets $subdirs, then | |
328 | dnl our AC_OUTPUT will actually use it. | |
329 | AC_CONFIG_SUBDIRS() | |
330 | ||
e0a3ed4f RM |
331 | case "$enable_add_ons" in |
332 | ''|no) add_ons= ;; | |
333 | yes|'*') | |
334 | add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps | | |
335 | sed 's@/[[^/]]*$@@' | sort | uniq` | |
336 | add_ons_automatic=yes | |
337 | ;; | |
338 | *) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'` | |
339 | add_ons_automatic=no ;; | |
340 | esac | |
341 | ||
342 | configured_add_ons= | |
8f73811b RM |
343 | add_ons_sfx= |
344 | add_ons_pfx= | |
345 | if test x"$add_ons" != x; then | |
346 | for f in $add_ons; do | |
347 | # Some sanity checks | |
348 | case "$f" in | |
349 | crypt) | |
350 | AC_MSG_ERROR([ | |
351 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
352 | *** part of glibc and using the old add-on will not work with this | |
353 | *** release. Start again with fresh sources and without the old | |
354 | *** \`crypt' add-on.]) | |
355 | ;; | |
356 | localedata) | |
357 | AC_MSG_ERROR([ | |
358 | *** It seems that you're using an old \`localedata' add-on. localedata | |
359 | *** is now part of glibc and using the old add-on will not work with | |
360 | *** this release. Start again with fresh sources and without the old | |
361 | *** \`localedata' add-on.]) | |
362 | ;; | |
363 | esac | |
8f73811b RM |
364 | done |
365 | ||
9382fcee | 366 | # Now source each add-on's configure fragment. |
c80e931a RM |
367 | # The fragments can use $srcdir/$libc_add_on to find themselves, |
368 | # and test $add_ons_automatic to see if they were explicitly requested. | |
369 | # A fragment can clear (or even change) $libc_add_on to affect | |
370 | # whether it goes into the list to be actually used in the build. | |
371 | use_add_ons= | |
9382fcee | 372 | for libc_add_on in $add_ons; do |
e0a3ed4f RM |
373 | # Test whether such a directory really exists. |
374 | # It can be absolute, or relative to $srcdir, or relative to the build dir. | |
375 | case "$libc_add_on" in | |
376 | /*) | |
377 | libc_add_on_srcdir=$libc_add_on | |
378 | ;; | |
379 | *) | |
380 | test -d "$srcdir/$libc_add_on" || { | |
77e8bddf | 381 | if test -d "$libc_add_on"; then |
e0a3ed4f RM |
382 | libc_add_on="`pwd`/$libc_add_on" |
383 | else | |
384 | AC_MSG_ERROR(add-on directory \"$libc_add_on\" does not exist) | |
385 | fi | |
386 | } | |
387 | libc_add_on_srcdir=$srcdir/$libc_add_on | |
388 | ;; | |
389 | esac | |
390 | ||
391 | libc_add_on_frag=$libc_add_on_srcdir/configure | |
392 | libc_add_on_canonical= | |
7967983f | 393 | libc_add_on_config_subdirs= |
e0a3ed4f RM |
394 | if test -r "$libc_add_on_frag"; then |
395 | AC_MSG_NOTICE(running configure fragment for add-on $libc_add_on) | |
396 | libc_add_on_canonical=unknown | |
397 | libc_add_on_subdirs= | |
398 | . "$libc_add_on_frag" | |
399 | test -z "$libc_add_on" || { | |
77e8bddf | 400 | configured_add_ons="$configured_add_ons $libc_add_on" |
e0a3ed4f RM |
401 | if test "x$libc_add_on_canonical" = xunknown; then |
402 | AC_MSG_ERROR(fragment must set \$libc_add_on_canonical) | |
403 | fi | |
404 | for d in $libc_add_on_subdirs; do | |
405 | case "$libc_add_on" in | |
406 | /*) subdir_srcdir="$libc_add_on" ;; | |
407 | *) subdir_srcdir="\$(..)$libc_add_on" ;; | |
408 | esac | |
409 | case "$d" in | |
410 | .) | |
411 | d="${libc_add_on_canonical:-$libc_add_on}" | |
412 | ;; | |
413 | /*) | |
414 | subdir_srcdir="$d" | |
415 | ;; | |
416 | *) | |
417 | subdir_srcdir="$subdir_srcdir/$d" | |
418 | ;; | |
419 | esac | |
420 | d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'` | |
421 | add_on_subdirs="$add_on_subdirs $d" | |
422 | test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars | |
423 | $d-srcdir = $subdir_srcdir" | |
424 | done | |
7967983f RM |
425 | for d in $libc_add_on_config_subdirs; do |
426 | case "$d" in | |
427 | /*) AC_MSG_ERROR(dnl | |
428 | fragment uses absolute path in \$libc_add_on_config_subdirs) ;; | |
429 | esac | |
430 | if test ! -d "$libc_add_on_srcdir/$d"; then | |
431 | AC_MSG_ERROR(fragment wants to configure missing directory $d) | |
432 | fi | |
433 | case "$libc_add_on" in | |
434 | /*) AC_MSG_ERROR(dnl | |
435 | relative path required for add-on using \$libc_add_on_config_subdirs) ;; | |
436 | esac | |
437 | subdirs="$subdirs $libc_add_on/$d" | |
438 | done | |
e0a3ed4f | 439 | } |
8f73811b | 440 | fi |
619f9448 | 441 | if test -n "$libc_add_on"; then |
10a803e0 | 442 | LIBC_PRECONFIGURE([$libc_add_on_srcdir], [add-on $libc_add_on for]) |
619f9448 RM |
443 | use_add_ons="$use_add_ons $libc_add_on" |
444 | add_ons_pfx="$add_ons_pfx $libc_add_on/" | |
e0a3ed4f RM |
445 | test -z "$libc_add_on_canonical" || |
446 | add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical" | |
619f9448 | 447 | fi |
8f73811b | 448 | done |
c80e931a RM |
449 | # Use echo to strip excess whitespace. |
450 | add_ons="`echo $use_add_ons`" | |
8f73811b RM |
451 | fi |
452 | AC_SUBST(add_ons) | |
e0a3ed4f | 453 | AC_SUBST(add_on_subdirs) |
8f73811b RM |
454 | |
455 | ||
bdc8eb03 UD |
456 | ### |
457 | ### I put this here to prevent those annoying emails from people who cannot | |
458 | ### read and try to compile glibc on unsupported platforms. --drepper | |
459 | ### | |
460 | ### By using the undocumented --enable-hacker-mode option for configure | |
461 | ### one can skip this test to make the configuration not fail for unsupported | |
462 | ### platforms. | |
463 | ### | |
8f73811b | 464 | if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then |
bdc8eb03 | 465 | case "$machine-$host_os" in |
0269750c | 466 | *-linux* | *-gnu* | arm*-none*) |
bdc8eb03 UD |
467 | ;; |
468 | *) | |
469 | echo "*** The GNU C library is currently not available for this platform." | |
470 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
471 | echo "*** might never happen. So, if you have interest to see glibc on" | |
472 | echo "*** this platform visit" | |
473 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
474 | echo "*** and join the group of porters" | |
475 | exit 1 | |
476 | ;; | |
477 | esac | |
478 | fi | |
479 | ||
28f540f4 RM |
480 | dnl We need to use [ and ] for other purposes for a while now. |
481 | changequote(,)dnl | |
482 | # Expand the configuration machine name into a subdirectory by architecture | |
8f73811b RM |
483 | # type and particular chip. If an add-on configure fragment already set |
484 | # base_machine, we don't change it. | |
485 | test -n "$base_machine" || case "$machine" in | |
0b755dc4 | 486 | i[34567]86) base_machine=i386 machine=i386/$machine ;; |
92b27c74 UD |
487 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
488 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
489 | s390) base_machine=s390 machine=s390/s390-32 ;; |
490 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
491 | sh3*) base_machine=sh machine=sh/sh3 ;; |
492 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
493 | sparc | sparcv[67]) |
494 | base_machine=sparc machine=sparc/sparc32 ;; | |
495 | sparcv8 | supersparc | hypersparc) | |
496 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
497 | sparcv8plus | sparcv8plusa | sparcv9) |
498 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 | 499 | sparcv8plusb | sparcv9b) |
10c6e709 | 500 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;; |
2d73656b RM |
501 | sparcv9v) |
502 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;; | |
46ae8850 JJ |
503 | sparcv9v2) |
504 | base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;; | |
b1ecbed2 | 505 | sparc64) |
ca34d7a7 | 506 | base_machine=sparc machine=sparc/sparc64 ;; |
b1ecbed2 | 507 | sparc64b) |
bb769ab6 | 508 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; |
2d73656b RM |
509 | sparc64v) |
510 | base_machine=sparc machine=sparc/sparc64/sparcv9v ;; | |
46ae8850 JJ |
511 | sparc64v2) |
512 | base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;; | |
3a2832a0 | 513 | *) base_machine=$machine ;; |
28f540f4 | 514 | esac |
f0523145 RM |
515 | changequote([,])dnl |
516 | AC_SUBST(base_machine) | |
28f540f4 | 517 | |
dfd2257a UD |
518 | if test "$base_machine" = "i386"; then |
519 | AC_DEFINE(USE_REGPARMS) | |
520 | fi | |
521 | ||
84b9230c MF |
522 | # For the multi-arch option we need support in the assembler. |
523 | AC_CACHE_CHECK([for assembler gnu_indirect_function symbol type support], | |
77e8bddf | 524 | libc_cv_asm_gnu_indirect_function, [dnl |
84b9230c MF |
525 | cat > conftest.s <<EOF |
526 | .type foo,%gnu_indirect_function | |
527 | EOF | |
528 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; | |
529 | then | |
530 | libc_cv_asm_gnu_indirect_function=yes | |
531 | else | |
532 | libc_cv_asm_gnu_indirect_function=no | |
533 | fi | |
534 | rm -f conftest*]) | |
535 | ||
536 | AC_MSG_CHECKING(whether .text pseudo-op must be used) | |
537 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
538 | cat > conftest.s <<EOF | |
539 | .text | |
540 | EOF | |
541 | libc_cv_dot_text= | |
542 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
543 | libc_cv_dot_text=.text | |
544 | fi | |
545 | rm -f conftest*]) | |
546 | if test -z "$libc_cv_dot_text"; then | |
547 | AC_MSG_RESULT(no) | |
548 | else | |
549 | AC_MSG_RESULT(yes) | |
550 | fi | |
551 | ||
552 | AC_CACHE_CHECK(for assembler global-symbol directive, | |
553 | libc_cv_asm_global_directive, [dnl | |
554 | libc_cv_asm_global_directive=UNKNOWN | |
555 | for ac_globl in .globl .global .EXPORT; do | |
556 | cat > conftest.s <<EOF | |
557 | ${libc_cv_dot_text} | |
558 | ${ac_globl} foo | |
559 | foo: | |
560 | EOF | |
561 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
562 | libc_cv_asm_global_directive=${ac_globl} | |
563 | fi | |
564 | rm -f conftest* | |
565 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
566 | done]) | |
567 | if test $libc_cv_asm_global_directive = UNKNOWN; then | |
568 | AC_MSG_ERROR(cannot determine asm global directive) | |
569 | else | |
570 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
571 | fi | |
572 | ||
573 | AC_CACHE_CHECK(for assembler .type directive prefix, | |
574 | libc_cv_asm_type_prefix, [dnl | |
575 | libc_cv_asm_type_prefix=no | |
576 | for ac_try_prefix in '@' '%' '#'; do | |
577 | cat > conftest.s <<EOF | |
578 | ${libc_cv_dot_text} | |
579 | ${libc_cv_asm_global_directive} foo | |
580 | .type foo, ${ac_try_prefix}object | |
581 | .size foo, 1 | |
582 | foo: | |
583 | .byte 1 | |
584 | EOF | |
585 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
586 | libc_cv_asm_type_prefix=${ac_try_prefix} | |
587 | fi | |
588 | rm -f conftest* | |
589 | test "x$libc_cv_asm_type_prefix" != xno && break | |
590 | done]) | |
591 | if test "x$libc_cv_asm_type_prefix" != xno; then | |
592 | AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) | |
593 | fi | |
594 | ||
6b1d1d46 | 595 | if test x"$libc_cv_asm_gnu_indirect_function" != xyes -o x"$libc_cv_asm_type_prefix" = xno; then |
84b9230c MF |
596 | if test x"$multi_arch" = xyes; then |
597 | AC_MSG_ERROR([--enable-multi-arch support requires assembler and linker support]) | |
598 | else | |
599 | multi_arch=no | |
600 | fi | |
601 | fi | |
602 | if test x"$multi_arch" != xno; then | |
603 | multi_arch_d=/multiarch | |
604 | fi | |
605 | ||
f0523145 | 606 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 607 | # This can take a while to compute. |
f0523145 | 608 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 609 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
610 | dnl We need to use [ and ] for other purposes for a while now. |
611 | changequote(,)dnl | |
28f540f4 RM |
612 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
613 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
614 | ||
b22d21b3 | 615 | test "x$base_os" != x || case "$os" in |
28f540f4 RM |
616 | gnu*) |
617 | base_os=mach/hurd ;; | |
883bc19b | 618 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 619 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 620 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 621 | base_os=unix/bsd ;; |
d586354e | 622 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 623 | base_os=unix/sysv ;; |
f802accb UD |
624 | irix6*) |
625 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 626 | solaris[2-9]*) |
28f540f4 RM |
627 | base_os=unix/sysv/sysv4 ;; |
628 | none) | |
629 | base_os=standalone ;; | |
28f540f4 RM |
630 | esac |
631 | ||
632 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
633 | tail=$os | |
634 | ostry=$os | |
635 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
636 | ostry="$ostry /$o" | |
637 | tail=$o | |
75914335 | 638 | done |
28f540f4 RM |
639 | o=`echo $tail | sed 's/[0-9]*$//'` |
640 | if test $o != $tail; then | |
641 | ostry="$ostry /$o" | |
642 | fi | |
ec4b0518 UD |
643 | # For linux-gnu, try linux-gnu, then linux. |
644 | o=`echo $tail | sed 's/-.*$//'` | |
645 | if test $o != $tail; then | |
646 | ostry="$ostry /$o" | |
647 | fi | |
28f540f4 RM |
648 | |
649 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
650 | base= | |
651 | tail=$base_os | |
652 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
653 | set $b | |
654 | base="$base /$1" | |
655 | tail="$2" | |
656 | done | |
657 | ||
ae6b8730 | 658 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 | 659 | mach= |
2ceaa76a | 660 | tail=$machine${submachine:+/$submachine} |
28f540f4 RM |
661 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do |
662 | set $m | |
10ceac89 RM |
663 | # Prepend the machine's FPU directory unless --without-fp. |
664 | if test "$with_fp" = yes; then | |
665 | mach="$mach /$1/fpu" | |
f4b07664 RM |
666 | else |
667 | mach="$mach /$1/nofpu" | |
82d00cab | 668 | fi |
28f540f4 RM |
669 | mach="$mach /$1" |
670 | tail="$2" | |
671 | done | |
672 | ||
673 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
674 | changequote([,])dnl | |
675 | ||
676 | # Find what sysdep directories exist. | |
e0a3ed4f | 677 | sysnames_add_ons= |
28f540f4 | 678 | sysnames= |
4b69abad RM |
679 | for b in $base ''; do |
680 | for m0 in $mach ''; do | |
681 | for v in /$vendor ''; do | |
682 | test "$v" = / && continue | |
683 | for o in /$ostry ''; do | |
684 | test "$o" = / && continue | |
425ce2ed | 685 | for m in $multi_arch_d $mach ''; do |
4b69abad | 686 | for d in $add_ons_pfx ''; do |
8f73811b | 687 | for a in $add_ons_sfx ''; do |
e0a3ed4f | 688 | if test -n "$m0$m0sub$b$v$o$m$msub"; then |
77e8bddf AS |
689 | try_srcdir="${srcdir}/" |
690 | case "$d" in | |
e0a3ed4f RM |
691 | /*) try_srcdir= ;; |
692 | esac | |
4b69abad | 693 | try="${d}sysdeps$m0$m0sub$b$v$o$m$msub$a" |
8f73811b RM |
694 | test -n "$enable_debug_configure" && |
695 | echo "$0 [DEBUG]: try $try" >&2 | |
e0a3ed4f | 696 | if test -d "$try_srcdir$try"; then |
8f73811b RM |
697 | sysnames="$sysnames $try" |
698 | { test -n "$o" || test -n "$b"; } && os_used=t | |
699 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
4b69abad RM |
700 | case x${m0:-$m} in |
701 | x*/$submachine) submachine_used=t ;; | |
702 | esac | |
e0a3ed4f RM |
703 | if test -n "$d"; then |
704 | case "$sysnames_add_ons" in | |
705 | *" $d "*) ;; | |
706 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
707 | esac | |
708 | fi | |
8f73811b | 709 | fi |
57ba7bb4 | 710 | fi |
8f73811b | 711 | done |
57ba7bb4 | 712 | done |
28f540f4 RM |
713 | done |
714 | done | |
715 | done | |
716 | done | |
4b69abad | 717 | done |
28f540f4 | 718 | |
6f89d2f3 L |
719 | # If the assembler supports gnu_indirect_function symbol type and the |
720 | # architecture supports multi-arch, we enable multi-arch by default. | |
84b9230c MF |
721 | case $sysnames_add_ons$sysnames in |
722 | *"$multi_arch_d"*) | |
723 | ;; | |
724 | *) | |
77e8bddf | 725 | test x"$multi_arch" = xdefault && multi_arch=no |
84b9230c MF |
726 | ;; |
727 | esac | |
728 | if test x"$multi_arch" != xno; then | |
6f89d2f3 L |
729 | AC_DEFINE(USE_MULTIARCH) |
730 | fi | |
731 | AC_SUBST(multi_arch) | |
732 | ||
28f540f4 RM |
733 | if test -z "$os_used" && test "$os" != none; then |
734 | AC_MSG_ERROR(Operating system $os is not supported.) | |
735 | fi | |
736 | if test -z "$machine_used" && test "$machine" != none; then | |
737 | AC_MSG_ERROR(The $machine is not supported.) | |
738 | fi | |
2ceaa76a RM |
739 | if test -z "$submachine_used" && test -n "$submachine"; then |
740 | AC_MSG_ERROR(The $submachine subspecies of $host_cpu is not supported.) | |
741 | fi | |
742 | AC_SUBST(submachine) | |
28f540f4 RM |
743 | |
744 | # We have now validated the configuration. | |
745 | ||
335aa320 | 746 | |
a0da5fe1 | 747 | # Look for an `elf' subdirectory of each machine directory. |
10ceac89 RM |
748 | # We prepend these rather than inserting them whereever the machine appears |
749 | # because things specified by the machine's ELF ABI should override | |
750 | # OS-specific things, and should always be the same for any OS on the | |
751 | # machine (otherwise what's the point of an ABI?). | |
a0da5fe1 UD |
752 | elf_dirs= |
753 | for d in $add_ons_pfx ''; do | |
754 | for m in $mach; do | |
755 | if test -d $srcdir/${d}sysdeps$m/elf; then | |
756 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" | |
757 | fi | |
28f540f4 | 758 | done |
a0da5fe1 UD |
759 | done |
760 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" | |
28f540f4 | 761 | |
335aa320 | 762 | |
28f540f4 RM |
763 | # Expand the list of system names into a full list of directories |
764 | # from each element's parent name and Implies file (if present). | |
765 | set $sysnames | |
e50ec9f9 | 766 | names= |
28f540f4 RM |
767 | while test $# -gt 0; do |
768 | name=$1 | |
769 | shift | |
770 | ||
e50ec9f9 | 771 | case " $names " in *" $name "*) |
f332db02 RM |
772 | # Already in the list. |
773 | continue | |
e50ec9f9 | 774 | esac |
f332db02 RM |
775 | |
776 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 777 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 778 | |
57ba7bb4 UD |
779 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
780 | ||
781 | case $name in | |
782 | /*) xsrcdir= ;; | |
783 | *) xsrcdir=$srcdir/ ;; | |
784 | esac | |
785 | test -n "$enable_debug_configure" && | |
786 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
787 | ||
788 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 789 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
790 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
791 | implied= | |
792 | for x in $implied_candidate; do | |
636ccfc8 | 793 | found=no |
57ba7bb4 UD |
794 | if test -d $xsrcdir$name_base/$x; then |
795 | implied="$implied $name_base/$x"; | |
636ccfc8 UD |
796 | found=yes |
797 | fi | |
798 | for d in $add_ons_pfx ''; do | |
799 | try="${d}sysdeps/$x" | |
800 | case $d in | |
801 | /*) try_srcdir= ;; | |
802 | *) try_srcdir=$srcdir/ ;; | |
803 | esac | |
804 | test -n "$enable_debug_configure" && | |
805 | echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 | |
806 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
807 | then | |
808 | implied="$implied $try" | |
809 | found=yes | |
e0a3ed4f RM |
810 | case "$sysnames_add_ons" in |
811 | *" $d "*) ;; | |
812 | *|'') sysnames_add_ons="$sysnames_add_ons $d" ;; | |
813 | esac | |
636ccfc8 UD |
814 | fi |
815 | done | |
816 | if test $found = no; then | |
77e8bddf | 817 | AC_MSG_WARN($name/Implies specifies nonexistent $x) |
57ba7bb4 | 818 | fi |
28f540f4 RM |
819 | done |
820 | else | |
821 | implied= | |
822 | fi | |
823 | ||
824 | # Add NAME to the list of names. | |
825 | names="$names $name" | |
826 | ||
827 | # Find the parent of NAME, using the empty string if it has none. | |
828 | changequote(,)dnl | |
57ba7bb4 | 829 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
830 | changequote([,])dnl |
831 | ||
832 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
833 | # the list of names to be processed (the argument list). We prepend the | |
834 | # implied names to the list and append the parent. We want implied | |
835 | # directories to come before further directories inferred from the | |
836 | # configuration components; this ensures that for sysv4, unix/common | |
837 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
838 | # after sysv4). | |
839 | sysnames="`echo $implied $* $parent`" | |
840 | test -n "$sysnames" && set $sysnames | |
841 | done | |
842 | ||
843 | # Add the default directories. | |
a0da5fe1 | 844 | default_sysnames="sysdeps/generic/elf sysdeps/generic" |
ecdc196c | 845 | sysnames="$names $default_sysnames" |
f332db02 RM |
846 | AC_SUBST(sysnames) |
847 | # The other names were emitted during the scan. | |
ecdc196c | 848 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 849 | |
e0a3ed4f RM |
850 | # Collect the list of add-ons that supply partial sysdeps trees. |
851 | sysdeps_add_ons= | |
852 | for add_on in $add_ons; do | |
853 | case "$add_on" in | |
854 | /*) xsrcdir= ;; | |
855 | *) xsrcdir="$srcdir/" ;; | |
856 | esac | |
857 | ||
858 | test -d "$xsrcdir$add_on/sysdeps" || { | |
859 | case "$configured_add_ons " in | |
860 | *" $add_on "*) ;; | |
861 | *|'') | |
862 | AC_MSG_ERROR(add-on $add_on has no configure fragment or sysdeps tree) | |
863 | ;; | |
864 | esac | |
865 | continue | |
866 | } | |
867 | ||
868 | sysdeps_add_ons="$sysdeps_add_ons $add_on" | |
869 | case "$sysnames_add_ons" in | |
870 | *" $add_on/ "*) ;; | |
871 | *|'') | |
872 | AC_MSG_WARN(add-on $add_on contributed no sysdeps directories) | |
873 | continue ;; | |
874 | esac | |
875 | ||
876 | found=no | |
877 | for d in $sysnames; do | |
878 | case "$d" in | |
879 | $add_on/sysdeps/*) ;; | |
880 | *) continue ;; | |
881 | esac | |
882 | (cd "$xsrcdir$d" && for f in *[[!~]]; do | |
883 | case "$f" in | |
884 | sys|bits) | |
885 | for ff in $f/*.h; do | |
886 | test -d "$ff" || { test -e "$ff" && exit 88; } | |
887 | done | |
888 | ;; | |
889 | *) | |
77e8bddf | 890 | test -d "$f" || { test -e "$f" && exit 88; } |
e0a3ed4f RM |
891 | ;; |
892 | esac | |
893 | done) | |
894 | if test $? -eq 88; then | |
895 | found=yes | |
896 | break | |
897 | fi | |
898 | done | |
899 | if test $found = no; then | |
900 | AC_MSG_WARN(add-on $add_on contributed no useful sysdeps directories) | |
901 | fi | |
902 | done | |
903 | AC_SUBST(sysdeps_add_ons) | |
904 | ||
f332db02 RM |
905 | |
906 | ### Locate tools. | |
28f540f4 | 907 | |
28f540f4 | 908 | AC_PROG_INSTALL |
2b80a372 | 909 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 910 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 911 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 912 | fi |
0e3426bb | 913 | AC_PROG_LN_S |
ae828bc6 | 914 | |
4baa087a RM |
915 | LIBC_PROG_BINUTILS |
916 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
917 | ||
bec039bc | 918 | # Accept binutils 2.20 or newer. |
4baa087a RM |
919 | AC_CHECK_PROG_VER(AS, $AS, --version, |
920 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
bec039bc | 921 | [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 |
922 | AC_CHECK_PROG_VER(LD, $LD, --version, |
923 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
bec039bc | 924 | [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 925 | |
63bda0c1 | 926 | # These programs are version sensitive. |
3a12e572 | 927 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 928 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
0e7727f7 | 929 | [version \([egcygnustpi-]*[0-9.]*\)], [4.[3-9].* | 4.[1-9][0-9].* | [5-9].* ], |
90d1d40b | 930 | critic_missing="$critic_missing gcc") |
22e65f8f | 931 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 932 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 933 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 934 | |
22e65f8f | 935 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 936 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
937 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
938 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 939 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 940 | [GNU texinfo.* \([0-9][0-9.]*\)], |
aefdff34 RM |
941 | [4.*], |
942 | MAKEINFO=: aux_missing="$aux_missing makeinfo") | |
d6a97a28 | 943 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 944 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
945 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
946 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 947 | |
d30cf5bb RM |
948 | AC_CHECK_TOOL(READELF, readelf, false) |
949 | ||
476e7d78 RM |
950 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
951 | case "x$AUTOCONF" in | |
952 | xno|x|x:) AUTOCONF=no ;; | |
953 | *) | |
954 | AC_CACHE_CHECK(dnl | |
1400de2e | 955 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
956 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
957 | libc_cv_autoconf_works=yes | |
958 | else | |
959 | libc_cv_autoconf_works=no | |
960 | fi]) | |
961 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
962 | ;; | |
963 | esac | |
92963737 | 964 | if test "x$AUTOCONF" = xno; then |
476e7d78 | 965 | aux_missing="$aux_missing autoconf" |
14519931 | 966 | fi |
1400de2e | 967 | |
32a448ed RM |
968 | test -n "$critic_missing" && AC_MSG_ERROR([ |
969 | *** These critical programs are missing or too old:$critic_missing | |
970 | *** Check the INSTALL file for required versions.]) | |
971 | ||
4bca4c17 | 972 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 973 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
974 | *** some features will be disabled. |
975 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 976 | |
dbe7a0f5 UD |
977 | # if using special system headers, find out the compiler's sekrit |
978 | # header directory and add that to the list. NOTE: Only does the right | |
979 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
980 | if test -n "$sysheaders"; then | |
67fbfa5c RM |
981 | SYSINCLUDES=-nostdinc |
982 | for d in include include-fixed; do | |
983 | i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" && | |
984 | SYSINCLUDES="$SYSINCLUDES -isystem $i" | |
985 | done | |
986 | SYSINCLUDES="$SYSINCLUDES \ | |
3d6ce23a | 987 | -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`" |
ef226fec | 988 | if test -n "$CXX"; then |
7872cfb0 | 989 | CXX_SYSINCLUDES= |
ef226fec RM |
990 | cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` && |
991 | cxxmachine=`$CXX -dumpmachine 2>&AS_MESSAGE_LOG_FD` && | |
7872cfb0 AS |
992 | for d in include "$cxxmachine/include"; do |
993 | i=../../../../$d/c++/$cxxversion | |
994 | cxxheaders=`$CXX -print-file-name="$i"` && | |
995 | test "x$cxxheaders" != x && test "x$i" != "x$cxxheaders" && | |
996 | CXX_SYSINCLUDES="$CXX_SYSINCLUDES -isystem $cxxheaders \ | |
ef226fec | 997 | -isystem $cxxheaders/$cxxmachine -isystem $cxxheaders/backward" |
7872cfb0 | 998 | done |
ef226fec | 999 | fi |
dbe7a0f5 UD |
1000 | fi |
1001 | AC_SUBST(SYSINCLUDES) | |
ef226fec | 1002 | AC_SUBST(CXX_SYSINCLUDES) |
dbe7a0f5 | 1003 | |
3911660e UD |
1004 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
1005 | # since this would lead to problems installing/building glibc. | |
1006 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
1007 | # is true: | |
1008 | # - one of the terminals (":" and ";") is the first or last sign | |
1009 | # - two terminals occur directly after each other | |
1010 | # - the path contains an element with a dot in it | |
1011 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
1012 | changequote(,)dnl | |
1013 | case ${LD_LIBRARY_PATH} in | |
1014 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 1015 | ld_library_path_setting="contains current directory" |
3911660e UD |
1016 | ;; |
1017 | *) | |
1018 | ld_library_path_setting="ok" | |
1019 | ;; | |
1020 | esac | |
1021 | changequote([,])dnl | |
1022 | AC_MSG_RESULT($ld_library_path_setting) | |
1023 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
1024 | AC_MSG_ERROR([ |
1025 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
1026 | *** building glibc. Please change the environment variable | |
1027 | *** and run configure again.]) | |
3911660e | 1028 | fi |
8e31cf7e | 1029 | |
74bd2300 UD |
1030 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
1031 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
1032 | libc_cv_gcc_static_libgcc= | |
1033 | else | |
1034 | libc_cv_gcc_static_libgcc=-static-libgcc | |
1035 | fi]) | |
1036 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
1037 | ||
26f56c1c UD |
1038 | AC_PATH_PROG(BASH_SHELL, bash, no) |
1039 | if test "$BASH_SHELL" != no && | |
1040 | $BASH_SHELL -c 'test "$BASH_VERSINFO" \ | |
6973fc01 | 1041 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
1042 | libc_cv_have_bash2=yes |
1043 | else | |
1044 | libc_cv_have_bash2=no | |
1045 | fi | |
1046 | AC_SUBST(libc_cv_have_bash2) | |
1047 | ||
5290baf0 | 1048 | dnl We need a ksh compatible shell for tzselect. |
26f56c1c | 1049 | if test "$BASH_SHELL" = no; then |
5290baf0 UD |
1050 | AC_PATH_PROG(KSH, ksh, no) |
1051 | if test "$KSH" = no; then | |
1052 | libc_cv_have_ksh=no | |
1053 | else | |
1054 | libc_cv_have_ksh=yes | |
1055 | fi | |
1056 | else | |
26f56c1c | 1057 | KSH="$BASH_SHELL" |
5290baf0 UD |
1058 | AC_SUBST(KSH) |
1059 | libc_cv_have_ksh=yes | |
1060 | fi | |
1061 | AC_SUBST(libc_cv_have_ksh) | |
1062 | ||
5aa8ff62 | 1063 | AC_PROG_AWK |
c0016081 | 1064 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
1065 | if test "$PERL" != no && |
1066 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
1067 | PERL=no | |
ecb06196 | 1068 | fi |
2f512715 AS |
1069 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
1070 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
1071 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
1072 | ||
b8dc6a10 | 1073 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
1074 | AC_TRY_COMPILE(dnl |
1075 | [#define __need_size_t | |
1076 | #define __need_wchar_t | |
1077 | #include <stddef.h> | |
1078 | #define __need_NULL | |
1079 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
1080 | #ifdef offsetof | |
1081 | #error stddef.h ignored __need_* | |
1082 | #endif | |
1083 | if (&size == NULL || &wchar == NULL) abort ();], | |
77e8bddf AS |
1084 | libc_cv_friendly_stddef=yes, |
1085 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
1086 | if test $libc_cv_friendly_stddef = yes; then |
1087 | config_vars="$config_vars | |
1088 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
1089 | fi | |
1090 | ||
b8dc6a10 RM |
1091 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
1092 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
1093 | cat > conftest.S <<EOF |
1094 | #include "confdefs.h" | |
1095 | /* Nothing whatsoever. */ | |
1096 | EOF | |
3217788f | 1097 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
1098 | libc_cv_need_minus_P=no |
1099 | else | |
1100 | libc_cv_need_minus_P=yes | |
1101 | fi | |
1102 | rm -f conftest*]) | |
28f540f4 RM |
1103 | if test $libc_cv_need_minus_P = yes; then |
1104 | config_vars="$config_vars | |
1105 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
1106 | fi | |
1107 | ||
b8dc6a10 | 1108 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 1109 | cat > conftest.s <<EOF |
2293395f | 1110 | ${libc_cv_dot_text} |
ae1025be | 1111 | foo: |
df2a0c93 | 1112 | .set glibc_conftest_frobozz,foo |
9a70fcab | 1113 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 1114 | EOF |
df2a0c93 RM |
1115 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
1116 | # (but it doesn't work), so we must do a linking check to be sure. | |
1117 | cat > conftest1.c <<\EOF | |
1118 | extern int glibc_conftest_frobozz; | |
640f0119 | 1119 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
1120 | EOF |
1121 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 1122 | -nostartfiles -nostdlib \ |
0b4ee387 | 1123 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
1124 | libc_cv_asm_set_directive=yes |
1125 | else | |
1126 | libc_cv_asm_set_directive=no | |
1127 | fi | |
65b3cbcb | 1128 | rm -f conftest*]) |
e215c478 RM |
1129 | if test $libc_cv_asm_set_directive = yes; then |
1130 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
1131 | fi | |
1132 | ||
415ac3df UD |
1133 | AC_CACHE_CHECK(for assembler gnu_unique_object symbol type, |
1134 | libc_cv_asm_unique_object, [dnl | |
1135 | cat > conftest.s <<EOF | |
1136 | ${libc_cv_dot_text} | |
1137 | _sym: | |
1138 | .type _sym, ${libc_cv_asm_type_prefix}gnu_unique_object | |
1139 | EOF | |
1140 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then | |
1141 | libc_cv_asm_unique_object=yes | |
1142 | else | |
1143 | libc_cv_asm_unique_object=no | |
1144 | fi | |
1145 | rm -f conftest*]) | |
1146 | if test $libc_cv_asm_unique_object = yes; then | |
1147 | AC_DEFINE(HAVE_ASM_UNIQUE_OBJECT) | |
1148 | fi | |
1149 | ||
377a515b UD |
1150 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
1151 | [cat > conftest.s <<EOF | |
2293395f | 1152 | ${libc_cv_dot_text} |
4cca6b86 | 1153 | _sym: |
377a515b UD |
1154 | .symver _sym,sym@VERS |
1155 | EOF | |
3217788f | 1156 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1157 | libc_cv_asm_symver_directive=yes |
1158 | else | |
1159 | libc_cv_asm_symver_directive=no | |
1160 | fi | |
1161 | rm -f conftest*]) | |
1162 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1163 | if test $libc_cv_asm_symver_directive = yes; then | |
1164 | cat > conftest.s <<EOF | |
2293395f | 1165 | ${libc_cv_dot_text} |
4cca6b86 | 1166 | _sym: |
377a515b UD |
1167 | .symver _sym,sym@VERS |
1168 | EOF | |
1169 | cat > conftest.map <<EOF | |
f43ce637 | 1170 | VERS_1 { |
377a515b UD |
1171 | global: sym; |
1172 | }; | |
f43ce637 UD |
1173 | |
1174 | VERS_2 { | |
77e8bddf | 1175 | global: sym; |
f43ce637 | 1176 | } VERS_1; |
377a515b | 1177 | EOF |
3217788f RM |
1178 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1179 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1180 | -o conftest.so conftest.o | |
1181 | -nostartfiles -nostdlib | |
1182 | -Wl,--version-script,conftest.map | |
c2f55635 | 1183 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1184 | then |
1185 | libc_cv_ld_version_script_option=yes | |
1186 | else | |
1187 | libc_cv_ld_version_script_option=no | |
1188 | fi | |
1189 | else | |
1190 | libc_cv_ld_version_script_option=no | |
1191 | fi | |
1192 | else | |
1193 | libc_cv_ld_version_script_option=no | |
1194 | fi | |
1195 | rm -f conftest*]) | |
7499a22a RM |
1196 | if test $shared != no && |
1197 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1198 | test $libc_cv_ld_version_script_option = yes && |
1199 | test $enable_versioning = yes; then | |
377a515b UD |
1200 | VERSIONING=yes |
1201 | AC_DEFINE(DO_VERSIONING) | |
1202 | else | |
1203 | VERSIONING=no | |
1204 | fi | |
1205 | AC_SUBST(VERSIONING) | |
1206 | ||
a0da5fe1 | 1207 | if test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1208 | echo "\ |
f4017d20 | 1209 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1210 | *** versioning will introduce incompatibilities so that old binaries |
1211 | *** will not run anymore. | |
50304ef0 | 1212 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1213 | fi |
a0da5fe1 UD |
1214 | AC_CACHE_CHECK(for .previous assembler directive, |
1215 | libc_cv_asm_previous_directive, [dnl | |
1216 | cat > conftest.s <<EOF | |
fd26970f UD |
1217 | .section foo_section |
1218 | .previous | |
a0da5fe1 UD |
1219 | EOF |
1220 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1221 | libc_cv_asm_previous_directive=yes | |
1222 | else | |
1223 | libc_cv_asm_previous_directive=no | |
1224 | fi | |
1225 | rm -f conftest*]) | |
1226 | if test $libc_cv_asm_previous_directive = yes; then | |
1227 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1228 | else | |
1229 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1230 | libc_cv_asm_popsection_directive, [dnl | |
1231 | cat > conftest.s <<EOF | |
1232 | .pushsection foo_section | |
1233 | .popsection | |
fd26970f | 1234 | EOF |
3217788f | 1235 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
a0da5fe1 | 1236 | libc_cv_asm_popsection_directive=yes |
fd26970f | 1237 | else |
a0da5fe1 | 1238 | libc_cv_asm_popsection_directive=no |
fd26970f UD |
1239 | fi |
1240 | rm -f conftest*]) | |
a0da5fe1 UD |
1241 | if test $libc_cv_asm_popsection_directive = yes; then |
1242 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
fd26970f | 1243 | fi |
a0da5fe1 UD |
1244 | fi |
1245 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, | |
1246 | libc_cv_asm_protected_directive, [dnl | |
1247 | cat > conftest.s <<EOF | |
2d499f55 UD |
1248 | .protected foo |
1249 | foo: | |
1250 | .hidden bar | |
1251 | bar: | |
1252 | EOF | |
a0da5fe1 UD |
1253 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
1254 | libc_cv_asm_protected_directive=yes | |
1255 | else | |
1256 | AC_MSG_ERROR(assembler support for symbol visibility is required) | |
1257 | fi | |
1258 | rm -f conftest*]) | |
0fb7851f | 1259 | |
a0da5fe1 UD |
1260 | if test $libc_cv_asm_protected_directive = yes; then |
1261 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
0d01dace UD |
1262 | libc_cv_visibility_attribute, |
1263 | [cat > conftest.c <<EOF | |
1264 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1265 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1266 | EOF | |
1267 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1268 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1269 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1270 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1271 | libc_cv_visibility_attribute=yes | |
1272 | fi | |
1273 | fi | |
1274 | fi | |
f7d82dc9 | 1275 | rm -f conftest.{c,s} |
0d01dace | 1276 | ]) |
a0da5fe1 UD |
1277 | if test $libc_cv_visibility_attribute != yes; then |
1278 | AC_MSG_ERROR(compiler support for visibility attribute is required) | |
0d01dace | 1279 | fi |
a0da5fe1 | 1280 | fi |
0d01dace | 1281 | |
a0da5fe1 UD |
1282 | if test $libc_cv_visibility_attribute = yes; then |
1283 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
37ba7d66 UD |
1284 | libc_cv_broken_visibility_attribute, |
1285 | [cat > conftest.c <<EOF | |
1286 | int foo (int x); | |
1287 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1288 | int bar (int x) { return x; } | |
1289 | EOF | |
1290 | libc_cv_broken_visibility_attribute=yes | |
f7d82dc9 | 1291 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1292 | changequote(,)dnl |
1293 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1294 | changequote([,])dnl | |
1295 | libc_cv_broken_visibility_attribute=no | |
1296 | fi | |
1297 | fi | |
1298 | rm -f conftest.c conftest.s | |
1299 | ]) | |
a0da5fe1 UD |
1300 | if test $libc_cv_broken_visibility_attribute = yes; then |
1301 | AC_MSG_ERROR(working compiler support for visibility attribute is required) | |
37ba7d66 | 1302 | fi |
a0da5fe1 | 1303 | fi |
37ba7d66 | 1304 | |
a0da5fe1 UD |
1305 | AC_CACHE_CHECK(for broken __attribute__((alias())), |
1306 | libc_cv_broken_alias_attribute, | |
1307 | [cat > conftest.c <<EOF | |
1308 | extern int foo (int x) __asm ("xyzzy"); | |
1309 | int bar (int x) { return x; } | |
1310 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); | |
1311 | extern int dfoo; | |
1312 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1313 | int dfoo = 1; | |
37ba7d66 | 1314 | EOF |
a0da5fe1 UD |
1315 | libc_cv_broken_alias_attribute=yes |
1316 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1317 | if grep 'xyzzy' conftest.s >/dev/null && | |
1318 | grep 'abccb' conftest.s >/dev/null; then | |
1319 | libc_cv_broken_alias_attribute=no | |
1320 | fi | |
1321 | fi | |
1322 | rm -f conftest.c conftest.s | |
1323 | ]) | |
1324 | if test $libc_cv_broken_alias_attribute = yes; then | |
1325 | AC_MSG_ERROR(working alias attribute support required) | |
1326 | fi | |
1327 | ||
1328 | if test $libc_cv_visibility_attribute = yes; then | |
1329 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, | |
0d01dace UD |
1330 | libc_cv_have_sdata_section, |
1331 | [echo "int i;" > conftest.c | |
1332 | libc_cv_have_sdata_section=no | |
dbc92dc6 | 1333 | if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1334 | | grep '\.sdata' >/dev/null; then |
1335 | libc_cv_have_sdata_section=yes | |
1336 | fi | |
1337 | rm -f conftest.c conftest.so | |
1338 | ]) | |
a0da5fe1 UD |
1339 | if test $libc_cv_have_sdata_section = yes; then |
1340 | AC_DEFINE(HAVE_SDATA_SECTION) | |
0d01dace | 1341 | fi |
a0da5fe1 | 1342 | fi |
0d01dace | 1343 | |
a0da5fe1 UD |
1344 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
1345 | libc_cv_initfini_array, [dnl | |
07037eeb | 1346 | LIBC_TRY_LINK_STATIC([ |
5241882c | 1347 | int foo (void) { return 1; } |
2c617417 | 1348 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
07037eeb JM |
1349 | ], |
1350 | [if $READELF -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
a0da5fe1 | 1351 | libc_cv_initfini_array=yes |
5241882c | 1352 | else |
ce33ee7c | 1353 | libc_cv_initfini_array=no |
07037eeb JM |
1354 | fi], |
1355 | [libc_cv_initfini_array=no]) | |
1356 | ]) | |
a0da5fe1 UD |
1357 | if test $libc_cv_initfini_array != yes; then |
1358 | AC_MSG_ERROR([Need linker with .init_array/.fini_array support.]) | |
1359 | fi | |
62bede13 | 1360 | |
a0da5fe1 UD |
1361 | AC_CACHE_CHECK(whether to use .ctors/.dtors header and trailer, |
1362 | libc_cv_ctors_header, [dnl | |
1363 | libc_cv_ctors_header=yes | |
07037eeb JM |
1364 | LIBC_TRY_LINK_STATIC([ |
1365 | __attribute__ ((constructor)) void ctor (void) { asm (""); } | |
1366 | __attribute__ ((destructor)) void dtor (void) { asm (""); } | |
113ddea4 | 1367 | ], |
a0da5fe1 | 1368 | [dnl |
113ddea4 | 1369 | AS_IF([$READELF -WS conftest$ac_exeext | $AWK ' |
92963737 | 1370 | { gsub(/\@<:@ */, "@<:@") } |
113ddea4 RM |
1371 | $2 == ".ctors" || $2 == ".dtors" { |
1372 | size = strtonum("0x" $6) | |
1373 | align = strtonum("0x" $NF) | |
1374 | seen@<:@$2@:>@ = 1 | |
1375 | stub@<:@$2@:>@ = size == align * 2 | |
92963737 | 1376 | } |
113ddea4 RM |
1377 | END { |
1378 | ctors_ok = !seen@<:@".ctors"@:>@ || stub@<:@".ctors"@:>@ | |
1379 | dtors_ok = !seen@<:@".dtors"@:>@ || stub@<:@".dtors"@:>@ | |
1380 | exit ((ctors_ok && dtors_ok) ? 0 : 1) | |
1381 | } | |
1382 | '], [libc_cv_ctors_header=no]) | |
1383 | ], [dnl | |
1384 | AC_MSG_ERROR([missing __attribute__ ((constructor)) support??]) | |
1385 | ]) | |
a0da5fe1 UD |
1386 | ]) |
1387 | if test $libc_cv_ctors_header = no; then | |
1388 | AC_DEFINE(NO_CTORS_DTORS_SECTIONS) | |
1389 | fi | |
5241882c | 1390 | |
a0da5fe1 UD |
1391 | AC_CACHE_CHECK(for libunwind-support in compiler, |
1392 | libc_cv_cc_with_libunwind, [ | |
1393 | cat > conftest.c <<EOF | |
cbdb12de UD |
1394 | int main (void) { return 0; } |
1395 | EOF | |
a0da5fe1 UD |
1396 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ |
1397 | conftest.c -v 2>&1 >/dev/null | grep -q " -lunwind "; then | |
1398 | libc_cv_cc_with_libunwind=yes | |
1399 | else | |
1400 | libc_cv_cc_with_libunwind=no | |
c776b3d7 | 1401 | fi |
a0da5fe1 UD |
1402 | rm -f conftest*]) |
1403 | AC_SUBST(libc_cv_cc_with_libunwind) | |
1404 | if test $libc_cv_cc_with_libunwind = yes; then | |
1405 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1406 | fi | |
c776b3d7 | 1407 | |
a0da5fe1 UD |
1408 | AC_CACHE_CHECK(for -z nodelete option, |
1409 | libc_cv_z_nodelete, [dnl | |
1410 | cat > conftest.c <<EOF | |
0fb7851f UD |
1411 | int _start (void) { return 42; } |
1412 | EOF | |
a0da5fe1 UD |
1413 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1414 | -fPIC -shared -o conftest.so conftest.c | |
1415 | -nostartfiles -nostdlib | |
1416 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) | |
1417 | then | |
1418 | libc_cv_z_nodelete=yes | |
1419 | else | |
1420 | AC_MSG_ERROR(linker with -z nodelete support required) | |
1421 | fi | |
1422 | rm -f conftest*]) | |
2f54c82d | 1423 | |
a0da5fe1 UD |
1424 | AC_CACHE_CHECK(for -z nodlopen option, |
1425 | libc_cv_z_nodlopen, [dnl | |
1426 | cat > conftest.c <<EOF | |
2f54c82d UD |
1427 | int _start (void) { return 42; } |
1428 | EOF | |
a0da5fe1 | 1429 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1430 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1431 | -nostartfiles -nostdlib |
c2f55635 | 1432 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1433 | then |
1434 | libc_cv_z_nodlopen=yes | |
1435 | else | |
1436 | AC_MSG_ERROR(linker with -z nodlopen support required) | |
1437 | fi | |
1438 | rm -f conftest*]) | |
5d916713 | 1439 | |
a0da5fe1 UD |
1440 | AC_CACHE_CHECK(for -z initfirst option, |
1441 | libc_cv_z_initfirst, [dnl | |
1442 | cat > conftest.c <<EOF | |
5d916713 UD |
1443 | int _start (void) { return 42; } |
1444 | EOF | |
a0da5fe1 | 1445 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1446 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1447 | -nostartfiles -nostdlib |
c2f55635 | 1448 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 UD |
1449 | then |
1450 | libc_cv_z_initfirst=yes | |
1451 | else | |
1452 | AC_MSG_ERROR(linker with -z initfirst support required) | |
1453 | fi | |
1454 | rm -f conftest*]) | |
639c3248 | 1455 | |
a0da5fe1 UD |
1456 | # Add-on fragments can set these for other machines. |
1457 | libc_commonpagesize=${libc_commonpagesize:-no} | |
1458 | libc_relro_required=${libc_relro_required:-no} | |
1459 | case "$base_machine" in | |
1460 | i[[34567]]86 | x86_64 | powerpc* | s390*) | |
1461 | libc_commonpagesize=0x1000 | |
1462 | libc_relro_required=yes | |
1463 | ;; | |
1464 | sparc*) | |
1465 | libc_commonpagesize=0x2000 | |
1466 | libc_relro_required=yes | |
1467 | ;; | |
a0da5fe1 | 1468 | esac |
574920b4 | 1469 | |
a0da5fe1 UD |
1470 | if test $libc_commonpagesize != no; then |
1471 | AC_CACHE_CHECK(for -z relro option, | |
1472 | libc_cv_z_relro, [dnl | |
1473 | libc_cv_z_relro=no | |
1474 | AC_LANG_CONFTEST([AC_LANG_SOURCE([[ | |
574920b4 RM |
1475 | int _start (void) { return 42; } |
1476 | extern void _exit (int); | |
9fa2c032 RM |
1477 | /* Since these pointers are const, they should go in rodata. |
1478 | Since they refer to functions that have to be resolved by | |
1479 | dynamic linking, they should instead go in RELRO data. */ | |
defe9061 | 1480 | const void *const relro[] = { &_start, &_exit, 0 }; |
9fa2c032 RM |
1481 | /* GNU ld fails to produce RELRO data when it's very small and there is no |
1482 | normal writable data following it, or if only uninitialized (.bss) data | |
1483 | follows it, or only very small writable data. */ | |
1484 | int data[0x10000] = { 1, }; | |
574920b4 | 1485 | ]])]) |
a0da5fe1 | 1486 | cat > conftest.awk <<\EOF |
574920b4 RM |
1487 | BEGIN { |
1488 | result = "no" | |
1489 | commonpagesize = strtonum(commonpagesize) | |
1490 | } | |
1491 | { print "LINE:", $0 > "/dev/stderr" } | |
1492 | $1 == "GNU_RELRO" { | |
1493 | vaddr = strtonum($3) | |
1494 | memsz = strtonum($6) | |
1495 | end = vaddr + memsz | |
1496 | printf "vaddr %#x memsz %#x end %#x commonpagesize %#x\n", \ | |
1497 | vaddr, memsz, end, commonpagesize > "/dev/stderr" | |
1498 | result = (end % commonpagesize == 0) ? "yes" : "broken" | |
1499 | } | |
1500 | END { print result } | |
1501 | EOF | |
a0da5fe1 | 1502 | AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
574920b4 RM |
1503 | -fPIC -shared -o conftest.so conftest.c |
1504 | -nostartfiles -nostdlib | |
1505 | -Wl,-z,relro 1>&AS_MESSAGE_LOG_FD]) && | |
a0da5fe1 UD |
1506 | AC_TRY_COMMAND([$READELF -Wl conftest.so > conftest.ph]) && |
1507 | AC_TRY_COMMAND([ | |
574920b4 RM |
1508 | $AWK -v commonpagesize=$libc_commonpagesize -f conftest.awk |
1509 | conftest.ph > conftest.cps | |
1510 | ]) && | |
a0da5fe1 UD |
1511 | libc_cv_z_relro=`cat conftest.cps 2>&AS_MESSAGE_LOG_FD` |
1512 | rm -f conftest*]) | |
1513 | if { test "x$libc_relro_required" = xyes && | |
1514 | test "x$libc_cv_z_relro" != xyes | |
1515 | } | |
1516 | then | |
1517 | AC_MSG_ERROR(linker with -z relro support required) | |
574920b4 | 1518 | fi |
a0da5fe1 UD |
1519 | else |
1520 | AC_MSG_WARN([missing architecture parameter to check for working -z relro]) | |
1521 | fi | |
ed20b3d9 | 1522 | |
a0da5fe1 UD |
1523 | AC_CACHE_CHECK(for -Bgroup option, |
1524 | libc_cv_Bgroup, [dnl | |
1525 | cat > conftest.c <<EOF | |
639c3248 UD |
1526 | int _start (void) { return 42; } |
1527 | EOF | |
a0da5fe1 UD |
1528 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1529 | -fPIC -shared -o conftest.so conftest.c | |
1530 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1531 | then | |
1532 | libc_cv_Bgroup=yes | |
1533 | else | |
1534 | libc_cv_Bgroup=no | |
1535 | fi | |
1536 | rm -f conftest*]) | |
1537 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1538 | |
a0da5fe1 UD |
1539 | AC_CACHE_CHECK(for libgcc_s suffix, |
1540 | libc_cv_libgcc_s_suffix, [dnl | |
1541 | cat > conftest.c <<EOF | |
cdbf48be UD |
1542 | int main (void) { return 0; } |
1543 | EOF | |
1544 | changequote(,)dnl | |
a0da5fe1 | 1545 | libc_cv_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ |
dbc92dc6 | 1546 | -fPIC -shared -shared-libgcc -o conftest.so \ |
cdbf48be UD |
1547 | conftest.c -v 2>&1 >/dev/null \ |
1548 | | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` | |
1549 | changequote([,])dnl | |
a0da5fe1 UD |
1550 | rm -f conftest*]) |
1551 | AC_SUBST(libc_cv_libgcc_s_suffix) | |
cdbf48be | 1552 | |
a0da5fe1 UD |
1553 | AC_CACHE_CHECK(for --as-needed option, |
1554 | libc_cv_as_needed, [dnl | |
1555 | cat > conftest.c <<EOF | |
feca5e0b UD |
1556 | int main (void) { return 0; } |
1557 | EOF | |
a0da5fe1 | 1558 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1559 | -fPIC -shared -o conftest.so conftest.c |
cdbf48be UD |
1560 | -lgcc_s$libc_cv_libgcc_s_suffix -Wl,--as-needed |
1561 | -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
a0da5fe1 UD |
1562 | then |
1563 | libc_cv_as_needed=yes | |
1564 | else | |
1565 | libc_cv_as_needed=no | |
1566 | fi | |
1567 | rm -f conftest*]) | |
1568 | AC_SUBST(libc_cv_as_needed) | |
feca5e0b | 1569 | |
a0da5fe1 UD |
1570 | ASFLAGS_config= |
1571 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1572 | libc_cv_as_noexecstack, [dnl | |
1573 | cat > conftest.c <<EOF | |
35915ec8 UD |
1574 | void foo (void) { } |
1575 | EOF | |
a0da5fe1 UD |
1576 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS |
1577 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
1578 | && grep -q .note.GNU-stack conftest.s \ | |
1579 | && AC_TRY_COMMAND([${CC-cc} $ASFLAGS -Wa,--noexecstack | |
1580 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1581 | then | |
1582 | libc_cv_as_noexecstack=yes | |
1583 | else | |
1584 | libc_cv_as_noexecstack=no | |
1585 | fi | |
1586 | rm -f conftest*]) | |
1587 | if test $libc_cv_as_noexecstack = yes; then | |
1588 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1589 | fi | |
1590 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1591 | |
a0da5fe1 UD |
1592 | AC_CACHE_CHECK(for -z combreloc, |
1593 | libc_cv_z_combreloc, [dnl | |
1594 | cat > conftest.c <<EOF | |
d555194c UD |
1595 | extern int bar (int); |
1596 | extern int mumble; | |
1597 | int foo (void) { return bar (mumble); } | |
a711b01d | 1598 | EOF |
a0da5fe1 | 1599 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dbc92dc6 | 1600 | -fPIC -shared -o conftest.so conftest.c |
35cd3c97 | 1601 | -nostdlib -nostartfiles |
c2f55635 | 1602 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a0da5fe1 | 1603 | then |
a711b01d UD |
1604 | dnl The following test is a bit weak. We must use a tool which can test |
1605 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1606 | dnl introducing new options this is not easily doable. Instead use a tool | |
1607 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1608 | dnl look for a section named .rel.dyn. | |
a0da5fe1 UD |
1609 | if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1610 | libc_cv_z_combreloc=yes | |
fdde8349 UD |
1611 | else |
1612 | libc_cv_z_combreloc=no | |
a711b01d | 1613 | fi |
a0da5fe1 UD |
1614 | else |
1615 | libc_cv_z_combreloc=no | |
1616 | fi | |
1617 | rm -f conftest*]) | |
1618 | if test "$libc_cv_z_combreloc" = yes; then | |
1619 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1620 | fi | |
1621 | AC_SUBST(libc_cv_z_combreloc) | |
2abf9ff1 | 1622 | |
a0da5fe1 UD |
1623 | AC_CACHE_CHECK(for -z execstack, |
1624 | libc_cv_z_execstack, [dnl | |
1625 | cat > conftest.c <<EOF | |
2abf9ff1 RM |
1626 | int _start (void) { return 42; } |
1627 | EOF | |
a0da5fe1 UD |
1628 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1629 | -fPIC -shared -o conftest.so conftest.c | |
1630 | -Wl,-z,execstack -nostdlib | |
1631 | 1>&AS_MESSAGE_LOG_FD]) | |
1632 | then | |
1633 | libc_cv_z_execstack=yes | |
1634 | else | |
1635 | libc_cv_z_execstack=no | |
1636 | fi | |
1637 | rm -f conftest*]) | |
1638 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 | 1639 | |
a0da5fe1 UD |
1640 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl |
1641 | cat > conftest.c <<EOF | |
c9c60884 | 1642 | int foo; |
49803108 | 1643 | main () { return 0;} |
c9c60884 | 1644 | EOF |
a0da5fe1 UD |
1645 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie |
1646 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
1647 | then | |
1648 | libc_cv_fpie=yes | |
1649 | else | |
1650 | libc_cv_fpie=no | |
1651 | fi | |
1652 | rm -f conftest*]) | |
c9c60884 | 1653 | |
a0da5fe1 | 1654 | AC_SUBST(libc_cv_fpie) |
871b9158 | 1655 | |
a0da5fe1 UD |
1656 | AC_CACHE_CHECK(for --hash-style option, |
1657 | libc_cv_hashstyle, [dnl | |
1658 | cat > conftest.c <<EOF | |
871b9158 UD |
1659 | int _start (void) { return 42; } |
1660 | EOF | |
a0da5fe1 UD |
1661 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1662 | -fPIC -shared -o conftest.so conftest.c | |
1663 | -Wl,--hash-style=both -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
1664 | then | |
1665 | libc_cv_hashstyle=yes | |
1666 | else | |
1667 | libc_cv_hashstyle=no | |
1668 | fi | |
1669 | rm -f conftest*]) | |
1670 | AC_SUBST(libc_cv_hashstyle) | |
1671 | ||
1672 | # The linker's default -shared behavior is good enough if it | |
1673 | # does these things that our custom linker scripts ensure that | |
1674 | # all allocated NOTE sections come first. | |
1675 | if test "$use_default_link" = default; then | |
1676 | AC_CACHE_CHECK([for sufficient default -shared layout], | |
1677 | libc_cv_use_default_link, [dnl | |
1678 | libc_cv_use_default_link=no | |
1679 | cat > conftest.s <<\EOF | |
fd5e21c7 RM |
1680 | .section .note.a,"a",%note |
1681 | .balign 4 | |
1682 | .long 4,4,9 | |
1683 | .string "GNU" | |
1684 | .string "foo" | |
1685 | .section .note.b,"a",%note | |
1686 | .balign 4 | |
1687 | .long 4,4,9 | |
1688 | .string "GNU" | |
1689 | .string "bar" | |
1690 | EOF | |
a0da5fe1 | 1691 | if AC_TRY_COMMAND([dnl |
fd5e21c7 RM |
1692 | ${CC-cc} $ASFLAGS -shared -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD]) && |
1693 | ac_try=`$READELF -S conftest.so | sed -n \ | |
1694 | ['${x;p;} | |
1695 | s/^ *\[ *[1-9][0-9]*\] *\([^ ][^ ]*\) *\([^ ][^ ]*\) .*$/\2 \1/ | |
1696 | t a | |
1697 | b | |
1698 | : a | |
1699 | H']` | |
a0da5fe1 UD |
1700 | then |
1701 | libc_seen_a=no libc_seen_b=no | |
1702 | set -- $ac_try | |
1703 | while test $# -ge 2 -a "$1" = NOTE; do | |
1704 | case "$2" in | |
1705 | .note.a) libc_seen_a=yes ;; | |
1706 | .note.b) libc_seen_b=yes ;; | |
1707 | esac | |
1708 | shift 2 | |
1709 | done | |
1710 | case "$libc_seen_a$libc_seen_b" in | |
1711 | yesyes) | |
1712 | libc_cv_use_default_link=yes | |
1713 | ;; | |
1714 | *) | |
1715 | echo >&AS_MESSAGE_LOG_FD "\ | |
fd5e21c7 RM |
1716 | $libc_seen_a$libc_seen_b from: |
1717 | $ac_try" | |
a0da5fe1 UD |
1718 | ;; |
1719 | esac | |
fd5e21c7 | 1720 | fi |
a0da5fe1 UD |
1721 | rm -f conftest*]) |
1722 | use_default_link=$libc_cv_use_default_link | |
fd26970f | 1723 | fi |
49803108 | 1724 | |
5c550700 RM |
1725 | AC_CACHE_CHECK(linker output format, libc_cv_output_format, [dnl |
1726 | if libc_cv_output_format=` | |
1727 | ${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&AS_MESSAGE_LOG_FD` | |
1728 | then | |
1729 | : | |
1730 | else | |
1731 | libc_cv_output_format= | |
1732 | fi | |
1733 | test -n "$libc_cv_output_format" || libc_cv_output_format=unknown]) | |
1734 | AC_SUBST(libc_cv_output_format) | |
1735 | ||
22dca1ea | 1736 | AC_CACHE_CHECK(for -fno-toplevel-reorder -fno-section-anchors, libc_cv_fno_toplevel_reorder, [dnl |
49803108 AJ |
1737 | cat > conftest.c <<EOF |
1738 | int foo; | |
1739 | EOF | |
22dca1ea | 1740 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-toplevel-reorder -fno-section-anchors |
49803108 AJ |
1741 | conftest.c 1>&AS_MESSAGE_LOG_FD]) |
1742 | then | |
18e2ac6d | 1743 | libc_cv_fno_toplevel_reorder=yes |
49803108 | 1744 | else |
18e2ac6d | 1745 | libc_cv_fno_toplevel_reorder=no |
49803108 AJ |
1746 | fi |
1747 | rm -f conftest*]) | |
18e2ac6d | 1748 | if test $libc_cv_fno_toplevel_reorder = yes; then |
22dca1ea | 1749 | fno_unit_at_a_time="-fno-toplevel-reorder -fno-section-anchors" |
18e2ac6d | 1750 | else |
49803108 AJ |
1751 | fno_unit_at_a_time=-fno-unit-at-a-time |
1752 | fi | |
1753 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1754 | |
401a9ec9 | 1755 | AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl |
17228132 TS |
1756 | LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector], |
1757 | [libc_cv_ssp=yes], | |
1758 | [libc_cv_ssp=no]) | |
1759 | ]) | |
401a9ec9 UD |
1760 | AC_SUBST(libc_cv_ssp) |
1761 | ||
b037a293 UD |
1762 | AC_CACHE_CHECK(for -fgnu89-inline, libc_cv_gnu89_inline, [dnl |
1763 | cat > conftest.c <<EOF | |
1764 | int foo; | |
1765 | #ifdef __GNUC_GNU_INLINE__ | |
1766 | main () { return 0;} | |
1767 | #else | |
1768 | #error | |
1769 | #endif | |
1770 | EOF | |
371f84a4 JJ |
1771 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline |
1772 | -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
b037a293 UD |
1773 | then |
1774 | libc_cv_gnu89_inline=yes | |
1775 | else | |
1776 | libc_cv_gnu89_inline=no | |
1777 | fi | |
1778 | rm -f conftest*]) | |
1779 | if test $libc_cv_gnu89_inline = yes; then | |
1c7570ff | 1780 | gnu89_inline=-fgnu89-inline |
b037a293 | 1781 | else |
1c7570ff | 1782 | gnu89_inline= |
b037a293 | 1783 | fi |
1c7570ff | 1784 | AC_SUBST(gnu89_inline) |
b037a293 | 1785 | |
a0da5fe1 UD |
1786 | AC_CACHE_CHECK(whether cc puts quotes around section names, |
1787 | libc_cv_have_section_quotes, | |
1788 | [cat > conftest.c <<EOF | |
1789 | static const int foo | |
1790 | __attribute__ ((section ("bar"))) = 1; | |
e26dd47f | 1791 | EOF |
a0da5fe1 UD |
1792 | if ${CC-cc} -S conftest.c -o conftest.s; then |
1793 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1794 | libc_cv_have_section_quotes=yes | |
e26dd47f | 1795 | else |
a0da5fe1 | 1796 | libc_cv_have_section_quotes=no |
e26dd47f | 1797 | fi |
a0da5fe1 UD |
1798 | else |
1799 | libc_cv_have_section_quotes=unknown | |
1800 | fi | |
1801 | rm -f conftest.{c,s} | |
1802 | ]) | |
1803 | if test $libc_cv_have_section_quotes = yes; then | |
1804 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
9a97d1f7 UD |
1805 | fi |
1806 | ||
1807 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1808 | [dnl |
c224a18a | 1809 | cat > conftest.s <<EOF |
2293395f | 1810 | ${libc_cv_dot_text} |
c224a18a | 1811 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1812 | foo: |
c224a18a RM |
1813 | .weak foo |
1814 | .weak bar; bar = foo | |
1815 | EOF | |
3217788f | 1816 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1817 | libc_cv_asm_weak_directive=yes |
1818 | else | |
1819 | libc_cv_asm_weak_directive=no | |
1820 | fi | |
1821 | rm -f conftest*]) | |
c224a18a | 1822 | |
c8cf0b14 | 1823 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1824 | AC_CACHE_CHECK(for assembler .weakext directive, |
1825 | libc_cv_asm_weakext_directive, | |
1826 | [dnl | |
1827 | cat > conftest.s <<EOF | |
2293395f | 1828 | ${libc_cv_dot_text} |
c224a18a | 1829 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1830 | foo: |
f802accb UD |
1831 | .weakext bar foo |
1832 | .weakext baz | |
1833 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 1834 | baz: |
c224a18a | 1835 | EOF |
3217788f | 1836 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1837 | libc_cv_asm_weakext_directive=yes |
1838 | else | |
1839 | libc_cv_asm_weakext_directive=no | |
1840 | fi | |
1841 | rm -f conftest*]) | |
1842 | ||
9a97d1f7 | 1843 | fi # no .weak |
c224a18a | 1844 | |
ffcf9634 | 1845 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1846 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1847 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1848 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1849 | fi | |
1850 | ||
50189569 | 1851 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
ced368f7 UD |
1852 | case $machine in |
1853 | sparc/sparc64*) cfi_offset=2047;; | |
1854 | *) cfi_offset=0;; | |
1855 | esac | |
50189569 | 1856 | cat > conftest.s <<EOF |
77e8bddf AS |
1857 | .text |
1858 | .type func,%function | |
50189569 | 1859 | func: |
77e8bddf | 1860 | .cfi_startproc |
f212e8dc | 1861 | .cfi_remember_state |
ced368f7 | 1862 | .cfi_rel_offset 1, $cfi_offset |
77e8bddf | 1863 | .cfi_endproc |
50189569 AJ |
1864 | EOF |
1865 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1866 | libc_cv_asm_cfi_directives=yes | |
1867 | else | |
1868 | libc_cv_asm_cfi_directives=no | |
1869 | fi | |
1870 | rm -f conftest*]) | |
1871 | if test $libc_cv_asm_cfi_directives = yes; then | |
1872 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1873 | fi |
50189569 | 1874 | |
a641835a RM |
1875 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1876 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1877 | _start () {} |
dcf0671d UD |
1878 | int __eh_pc; |
1879 | __throw () {} | |
a641835a | 1880 | EOF |
dcea62dd | 1881 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1882 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1883 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1884 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1885 | libc_cv_ld_no_whole_archive=yes |
1886 | else | |
1887 | libc_cv_ld_no_whole_archive=no | |
1888 | fi | |
1889 | rm -f conftest*]) | |
3ce1f295 UD |
1890 | if test $libc_cv_ld_no_whole_archive = no; then |
1891 | AC_MSG_ERROR([support for --no-whole-archive is needed]) | |
b17277cf | 1892 | fi |
a641835a | 1893 | |
dff14448 | 1894 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1895 | cat > conftest.c <<\EOF |
1896 | _start () {} | |
1897 | int __eh_pc; | |
1898 | __throw () {} | |
1899 | EOF | |
1900 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1901 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1902 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1903 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1904 | libc_cv_gcc_exceptions=yes |
b236e99d | 1905 | else |
dff14448 | 1906 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1907 | fi |
1908 | rm -f conftest*]) | |
dff14448 UD |
1909 | if test $libc_cv_gcc_exceptions = yes; then |
1910 | exceptions=-fexceptions | |
b17277cf | 1911 | fi |
dff14448 | 1912 | AC_SUBST(exceptions)dnl |
b236e99d | 1913 | |
66000494 UD |
1914 | if test "$host_cpu" = powerpc ; then |
1915 | # Check for a bug present in at least versions 2.8.x of GCC | |
1916 | # and versions 1.0.x of EGCS. | |
1917 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1918 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1919 | libc_cv_c_asmcr0_bug='no', | |
1920 | libc_cv_c_asmcr0_bug='yes')]) | |
1921 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1922 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1923 | fi | |
1924 | fi | |
1925 | ||
d555194c UD |
1926 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1927 | cat > conftest.c <<\EOF | |
1928 | void zero (void *x) | |
1929 | { | |
a52d1562 | 1930 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1931 | } |
1932 | EOF | |
1933 | dnl | |
1934 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1935 | then | |
1936 | libc_cv_gcc_builtin_memset=no | |
1937 | else | |
1938 | libc_cv_gcc_builtin_memset=yes | |
1939 | fi | |
1940 | rm -f conftest* ]) | |
1941 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1942 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1943 | fi | |
1944 | ||
85dd1003 UD |
1945 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1946 | cat > conftest.c <<\EOF | |
1947 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1948 | char *foo (const char *a, const char *b) | |
1949 | { | |
1950 | return __builtin_strstr (a, b); | |
1951 | } | |
1952 | EOF | |
1953 | dnl | |
1954 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1955 | then | |
1956 | libc_cv_gcc_builtin_redirection=yes | |
1957 | else | |
1958 | libc_cv_gcc_builtin_redirection=no | |
1959 | fi | |
1960 | rm -f conftest* ]) | |
3ce1f295 UD |
1961 | if test "$libc_cv_gcc_builtin_redirection" = no; then |
1962 | AC_MSG_ERROR([support for the symbol redirection needed]) | |
85dd1003 UD |
1963 | fi |
1964 | ||
739d440d | 1965 | dnl Check whether the compiler supports the __thread keyword. |
3ce1f295 UD |
1966 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, |
1967 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
1968 | __thread int a = 42; |
1969 | EOF | |
3ce1f295 UD |
1970 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
1971 | libc_cv_gcc___thread=yes | |
739d440d UD |
1972 | else |
1973 | libc_cv_gcc___thread=no | |
1974 | fi | |
3ce1f295 UD |
1975 | rm -f conftest*]) |
1976 | if test "$libc_cv_gcc___thread" = no; then | |
1977 | AC_MSG_ERROR([support for the __thread keyword is required]) | |
1978 | fi | |
739d440d | 1979 | |
3ce1f295 UD |
1980 | dnl Check whether the compiler supports the tls_model attribute. |
1981 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
1982 | cat > conftest.c <<\EOF | |
9b21e6bc RM |
1983 | extern __thread int a __attribute__((tls_model ("initial-exec"))); |
1984 | EOF | |
3ce1f295 UD |
1985 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
1986 | libc_cv_gcc_tls_model_attr=yes | |
1987 | else | |
1988 | libc_cv_gcc_tls_model_attr=no | |
1989 | fi | |
1990 | rm -f conftest*]) | |
1991 | if test "$libc_cv_gcc_tls_model_attr" = no; then | |
1992 | AC_MSG_ERROR([support for the tls_model attribute is required]) | |
9b21e6bc | 1993 | fi |
739d440d | 1994 | |
7998fa78 AS |
1995 | dnl Determine how to disable generation of FMA instructions. |
1996 | AC_CACHE_CHECK([for compiler option to disable generation of FMA instructions], | |
1997 | libc_cv_cc_nofma, [dnl | |
1998 | libc_cv_cc_nofma= | |
1999 | for opt in -ffp-contract=off -mno-fused-madd; do | |
2000 | LIBC_TRY_CC_OPTION([$opt], [libc_cv_cc_nofma=$opt; break]) | |
2001 | done]) | |
2002 | ||
2cf9ad57 RM |
2003 | if test -n "$submachine"; then |
2004 | AC_CACHE_CHECK([for compiler option for CPU variant], | |
f7d82dc9 | 2005 | libc_cv_cc_submachine, [dnl |
2cf9ad57 RM |
2006 | libc_cv_cc_submachine=no |
2007 | for opt in "-march=$submachine" "-mcpu=$submachine"; do | |
40b601fb | 2008 | LIBC_TRY_CC_OPTION([$opt], [ |
2cf9ad57 | 2009 | libc_cv_cc_submachine="$opt" |
40b601fb | 2010 | break], []) |
2cf9ad57 RM |
2011 | done]) |
2012 | if test "x$libc_cv_cc_submachine" = xno; then | |
2013 | AC_MSG_ERROR([${CC-cc} does not support $submachine]) | |
2014 | fi | |
2015 | fi | |
2016 | AC_SUBST(libc_cv_cc_submachine) | |
2017 | ||
c8f3e6db UD |
2018 | dnl Check whether we have the gd library available. |
2019 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
2020 | if test "$with_gd" != "no"; then |
2021 | old_CFLAGS="$CFLAGS" | |
2022 | CFLAGS="$CFLAGS $libgd_include" | |
2023 | old_LDFLAGS="$LDFLAGS" | |
2024 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
2025 | old_LIBS="$LIBS" | |
2026 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
2027 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
2028 | CFLAGS="$old_CFLAGS" | |
2029 | LDFLAGS="$old_LDFLAGS" | |
2030 | LIBS="$old_LIBS" | |
2031 | else | |
2032 | LIBGD=no | |
2033 | fi | |
c8f3e6db UD |
2034 | AC_MSG_RESULT($LIBGD) |
2035 | AC_SUBST(LIBGD) | |
3d558f4e | 2036 | |
2fff3d93 UD |
2037 | # SELinux detection |
2038 | if test x$with_selinux = xno ; then | |
2039 | have_selinux=no; | |
2040 | else | |
2041 | # See if we have the SELinux library | |
2042 | AC_CHECK_LIB(selinux, is_selinux_enabled, | |
2043 | have_selinux=yes, have_selinux=no) | |
2044 | # See if we have the SELinux header with the NSCD permissions in it. | |
2045 | if test x$have_selinux = xyes ; then | |
2046 | AC_MSG_CHECKING([for NSCD Flask permissions in selinux/av_permissions.h]) | |
2047 | AC_TRY_COMPILE([#include <selinux/av_permissions.h>], | |
2048 | [#ifdef NSCD__SHMEMHOST | |
2049 | return 0; | |
2050 | #else | |
2051 | #error NSCD__SHMEMHOST not defined | |
2052 | #endif], | |
2053 | have_selinux=yes, have_selinux=no) | |
2054 | AC_MSG_RESULT($have_selinux) | |
2055 | fi | |
2056 | ||
49155d51 | 2057 | if test x$with_selinux = xyes ; then |
2fff3d93 | 2058 | if test x$have_selinux = xno ; then |
49155d51 | 2059 | AC_MSG_ERROR([SELinux explicitly required, but sufficiently recent SELinux library not found]) |
2fff3d93 UD |
2060 | fi |
2061 | fi | |
2062 | fi | |
2063 | # Check if we're building with SELinux support. | |
2064 | if test "x$have_selinux" = xyes; then | |
943db9eb | 2065 | AC_DEFINE(HAVE_SELINUX, 1, [SELinux support]) |
ec23b9be UD |
2066 | |
2067 | # See if we have the libaudit library | |
943db9eb | 2068 | AC_CHECK_LIB(audit, audit_log_user_avc_message, |
77e8bddf | 2069 | have_libaudit=yes, have_libaudit=no) |
ec23b9be | 2070 | if test "x$have_libaudit" = xyes; then |
943db9eb | 2071 | AC_DEFINE(HAVE_LIBAUDIT, 1, [SELinux libaudit support]) |
ec23b9be UD |
2072 | fi |
2073 | AC_SUBST(have_libaudit) | |
1f063dca UD |
2074 | |
2075 | # See if we have the libcap library | |
2076 | AC_CHECK_LIB(cap, cap_init, have_libcap=yes, have_libcap=no) | |
2077 | if test "x$have_libcap" = xyes; then | |
2078 | AC_DEFINE(HAVE_LIBCAP, 1, [SELinux libcap support]) | |
2079 | fi | |
2080 | AC_SUBST(have_libcap) | |
2fff3d93 UD |
2081 | fi |
2082 | AC_SUBST(have_selinux) | |
2083 | ||
8ed1e7d5 GK |
2084 | dnl check for the size of 'long double'. |
2085 | AC_CHECK_SIZEOF(long double, 0) | |
2086 | sizeof_long_double=$ac_cv_sizeof_long_double | |
2087 | AC_SUBST(sizeof_long_double) | |
2088 | ||
c224a18a RM |
2089 | ### End of automated tests. |
2090 | ### Now run sysdeps configure fragments. | |
2091 | ||
cb343854 | 2092 | # They also can set these variables. |
591e1ffb | 2093 | use_ldconfig=no |
cb343854 | 2094 | ldd_rewrite_script=no |
77259608 | 2095 | libc_cv_sysconfdir=$sysconfdir |
74bd2300 | 2096 | libc_cv_gcc_unwind_find_fde=no |
e2fd3cbe | 2097 | libc_cv_idn=no |
cb343854 | 2098 | |
28f540f4 | 2099 | # Iterate over all the sysdep directories we will use, running their |
09055553 | 2100 | # configure fragments. |
28f540f4 | 2101 | for dir in $sysnames; do |
57ba7bb4 UD |
2102 | case $dir in |
2103 | /*) dest=$dir ;; | |
2104 | *) dest=$srcdir/$dir ;; | |
2105 | esac | |
2106 | if test -r $dest/configure; then | |
d1149385 | 2107 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 2108 | . $dest/configure |
28f540f4 | 2109 | fi |
28f540f4 RM |
2110 | done |
2111 | ||
74bd2300 UD |
2112 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
2113 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
2114 | fi | |
2115 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
2116 | ||
a53bad16 UD |
2117 | # Test for old glibc 2.0.x headers so that they can be removed properly |
2118 | # Search only in includedir. | |
2119 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 2120 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
2121 | then |
2122 | old_glibc_headers=yes | |
2123 | else | |
2124 | old_glibc_headers=no | |
2125 | fi | |
2126 | AC_MSG_RESULT($old_glibc_headers) | |
2127 | if test ${old_glibc_headers} = yes; then | |
2128 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2129 | AC_MSG_WARN(*** be removed.) | |
2130 | fi | |
b195f6bc | 2131 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2132 | |
84384f5b | 2133 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2134 | AC_SUBST(libc_cv_localedir) |
77259608 | 2135 | AC_SUBST(libc_cv_sysconfdir) |
1ef32c3d | 2136 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2137 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2138 | |
58a4b51a RM |
2139 | dnl sysdeps/CPU/configure.in checks set this via arch-specific asm tests |
2140 | AC_SUBST(libc_cv_cpp_asm_debuginfo) | |
06e51c8f | 2141 | AC_SUBST(libc_cv_cc_sse4) |
b0ecde3a | 2142 | AC_SUBST(libc_cv_cc_avx) |
3b100462 | 2143 | AC_SUBST(libc_cv_cc_sse2avx) |
091023f5 | 2144 | AC_SUBST(libc_cv_cc_novzeroupper) |
af968f62 | 2145 | AC_SUBST(libc_cv_cc_fma4) |
7998fa78 | 2146 | AC_SUBST(libc_cv_cc_nofma) |
01f1f5ee | 2147 | AC_SUBST(libc_cv_as_i686) |
eae47a36 | 2148 | AC_SUBST(libc_cv_sparc_as_vis3) |
58a4b51a | 2149 | |
591e1ffb | 2150 | AC_SUBST(use_ldconfig) |
cb343854 | 2151 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2152 | |
650425ce | 2153 | AC_SUBST(static) |
ff3d7ed3 | 2154 | AC_SUBST(shared) |
a334319f | 2155 | |
ff886b82 UD |
2156 | AC_CACHE_CHECK([whether -fPIC is default], libc_cv_pic_default, |
2157 | [libc_cv_pic_default=yes | |
cc3fa755 | 2158 | cat > conftest.c <<EOF |
9756dfe1 | 2159 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2160 | # error PIC is default. |
2161 | #endif | |
2162 | EOF | |
0b4ee387 | 2163 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
ff886b82 | 2164 | libc_cv_pic_default=no |
cc3fa755 UD |
2165 | fi |
2166 | rm -f conftest.*]) | |
ff886b82 | 2167 | AC_SUBST(libc_cv_pic_default) |
cc3fa755 | 2168 | |
ff3d7ed3 | 2169 | AC_SUBST(profile) |
5107cf1d | 2170 | AC_SUBST(static_nss) |
ff3d7ed3 | 2171 | |
edf5b2d7 UD |
2172 | AC_SUBST(DEFINES) |
2173 | ||
61c83c3f RM |
2174 | dnl See sysdeps/mach/configure.in for this variable. |
2175 | AC_SUBST(mach_interface_list) | |
2176 | ||
28f540f4 RM |
2177 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
2178 | config_makefile= | |
2179 | else | |
2180 | config_makefile=Makefile | |
2181 | fi | |
2182 | ||
ee74a442 UD |
2183 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2184 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2185 | AC_SUBST(VERSION) |
ee74a442 | 2186 | AC_SUBST(RELEASE) |
df4ef2ab | 2187 | |
09055553 | 2188 | AC_CONFIG_FILES([config.make ${config_makefile}]) |
c118d634 | 2189 | AC_CONFIG_COMMANDS([default],[[ |
737547be UD |
2190 | case $CONFIG_FILES in *config.make*) |
2191 | echo "$config_vars" >> config.make;; | |
2192 | esac | |
c118d634 RM |
2193 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2194 | AC_OUTPUT |