]>
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 | |
c72637d4 RM |
9 | if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then |
10 | AC_MSG_ERROR([you must configure in a separate build directory]) | |
11 | fi | |
12 | ||
28f540f4 RM |
13 | # This will get text that should go into config.make. |
14 | config_vars= | |
15 | ||
16 | # Check for a --with-gmp argument and set gmp-srcdir in config.make. | |
6b7f6183 RM |
17 | AC_ARG_WITH([gmp], |
18 | AC_HELP_STRING([--with-gmp=DIRECTORY], | |
19 | [find GMP source code in DIRECTORY (not needed)]), | |
20 | [ | |
28f540f4 | 21 | case "$with_gmp" in |
6b7f6183 | 22 | yes) AC_MSG_ERROR([--with-gmp requires an argument; use --with-gmp=DIRECTORY]) ;; |
28f540f4 RM |
23 | ''|no) ;; |
24 | *) config_vars="$config_vars | |
25 | gmp-srcdir = $withval" ;; | |
26 | esac | |
27 | ]) | |
c8f3e6db | 28 | # Check for a --with-gd argument and set libgd-LDFLAGS in config.make. |
6b7f6183 RM |
29 | AC_ARG_WITH([gd], |
30 | AC_HELP_STRING([--with-gd=DIR], | |
31 | [find libgd include dir and library with prefix DIR]), | |
c8f3e6db UD |
32 | [dnl |
33 | case "$with_gd" in | |
f5f7239f UD |
34 | yes|''|no) ;; |
35 | *) libgd_include="-I$withval/include" | |
c8f3e6db UD |
36 | libgd_ldflags="-L$withval/lib" ;; |
37 | esac | |
38 | ]) | |
6b7f6183 RM |
39 | AC_ARG_WITH([gd-include], |
40 | AC_HELP_STRING([--with-gd-include=DIR], | |
41 | [find libgd include files in DIR]), | |
f5f7239f UD |
42 | [dnl |
43 | case "$with_gd_include" in | |
44 | ''|no) ;; | |
45 | *) libgd_include="-I$withval" ;; | |
46 | esac | |
47 | ]) | |
6b7f6183 RM |
48 | AC_ARG_WITH([gd-lib], |
49 | AC_HELP_STRING([--with-gd-lib=DIR], | |
50 | [find libgd library files in DIR]), | |
f5f7239f UD |
51 | [dnl |
52 | case "$with_gd_lib" in | |
53 | ''|no) ;; | |
54 | *) libgd_ldflags="-L$withval" ;; | |
55 | esac | |
56 | ]) | |
57 | ||
58 | if test -n "$libgd_include"; then | |
59 | config_vars="$config_vars | |
cf90163d | 60 | CFLAGS-memusagestat.c = $libgd_include" |
f5f7239f UD |
61 | fi |
62 | if test -n "$libgd_ldflags"; then | |
63 | config_vars="$config_vars | |
64 | libgd-LDFLAGS = $libgd_ldflags" | |
65 | fi | |
28f540f4 | 66 | |
ff3d7ed3 | 67 | dnl Arguments to specify presence of other packages/features. |
6b7f6183 RM |
68 | AC_ARG_WITH([fp], |
69 | AC_HELP_STRING([--with-fp], | |
70 | [if using floating-point hardware @<:@default=yes@:>@]), | |
71 | [with_fp=$withval], | |
72 | [with_fp=yes]) | |
675322a5 | 73 | AC_SUBST(with_fp) |
6b7f6183 RM |
74 | AC_ARG_WITH([binutils], |
75 | AC_HELP_STRING([--with-binutils=PATH], | |
76 | [specify location of binutils (as and ld)]), | |
77 | [path_binutils=$withval], | |
78 | [path_binutils='']) | |
79 | AC_ARG_WITH([elf], | |
80 | AC_HELP_STRING([--with-elf], | |
81 | [if using the ELF object format]), | |
82 | [elf=$withval], | |
83 | [elf=no]) | |
84 | AC_ARG_WITH([xcoff], | |
85 | AC_HELP_STRING([--with-xcoff], | |
86 | [if using the XCOFF object format]), | |
87 | [xcoff=$withval], | |
88 | [xcoff=no]) | |
89 | AC_ARG_WITH([cvs], | |
90 | AC_HELP_STRING([--without-cvs], | |
91 | [if CVS should not be used]), | |
92 | [with_cvs=$withval], | |
93 | [with_cvs=yes]) | |
6b3f2b3d UD |
94 | if test "$with_cvs" = yes; then |
95 | if test -d $srcdir/CVS && grep :pserver: $srcdir/CVS/Root > /dev/null | |
96 | then | |
97 | with_cvs=no | |
98 | fi | |
4442d7e8 | 99 | fi |
4d06461a | 100 | AC_SUBST(with_cvs) |
28f540f4 | 101 | |
6b7f6183 RM |
102 | AC_ARG_WITH([headers], |
103 | AC_HELP_STRING([--with-headers=PATH], | |
104 | [location of system headers to use | |
105 | (for example /usr/src/linux/include) | |
106 | @<:@default=compiler default@:>@]), | |
107 | [sysheaders=$withval], | |
108 | [sysheaders='']) | |
dbe7a0f5 | 109 | |
6b7f6183 RM |
110 | AC_ARG_ENABLE([sanity-checks], |
111 | AC_HELP_STRING([--disable-sanity-checks], | |
112 | [really do not use threads (should not be used except in special situations) @<:@default=yes@:>@]), | |
113 | [enable_sanity=$enableval], | |
114 | [enable_sanity=yes]) | |
a18f587d | 115 | |
7dbde9db RM |
116 | AC_SUBST(enable_check_abi) |
117 | AC_ARG_ENABLE([check-abi], | |
fd54683c RM |
118 | AC_HELP_STRING([--enable-check-abi], |
119 | [do "make check-abi" in "make check" (no/warn/yes) | |
120 | @<:@default=no@:>@]), | |
7dbde9db | 121 | [enable_check_abi=$enableval], |
fd54683c | 122 | [enable_check_abi=no]) |
7dbde9db | 123 | |
650425ce UD |
124 | dnl Arguments to enable or disable building the static, shared, profiled, |
125 | dnl and -fomit-frame-pointer libraries. | |
b38bb8ca UD |
126 | dnl I've disabled this for now since we cannot build glibc without static |
127 | dnl libraries built in the moment. | |
6b7f6183 RM |
128 | dnl AC_ARG_ENABLE([static], |
129 | dnl AC_HELP_STRING([--enable-static], | |
130 | dnl [build static library @<:@default=yes@:>@]), | |
131 | dnl [static=$enableval], | |
132 | dnl [static=yes]) | |
5c2a0669 | 133 | static=yes |
6b7f6183 RM |
134 | AC_ARG_ENABLE([shared], |
135 | AC_HELP_STRING([--enable-shared], | |
136 | [build shared library @<:@default=yes if GNU ld & ELF@:>@]), | |
137 | [shared=$enableval], | |
138 | [shared=default]) | |
139 | AC_ARG_ENABLE([profile], | |
140 | AC_HELP_STRING([--enable-profile], | |
141 | [build profiled library @<:@default=yes@:>@]), | |
142 | [profile=$enableval], | |
143 | [profile=yes]) | |
144 | AC_ARG_ENABLE([omitfp], | |
145 | AC_HELP_STRING([--enable-omitfp], | |
146 | [build undebuggable optimized library @<:@default=no@:>@]), | |
147 | [omitfp=$enableval], | |
148 | [omitfp=no]) | |
149 | AC_ARG_ENABLE([bounded], | |
150 | AC_HELP_STRING([--enable-bounded], | |
151 | [build with runtime bounds checking @<:@default=no@:>@]), | |
152 | [bounded=$enableval], | |
153 | [bounded=no]) | |
154 | AC_ARG_ENABLE([versioning], | |
155 | AC_HELP_STRING([--disable-versioning], | |
156 | [do not include versioning information in the library objects @<:@default=yes if supported@:>@]), | |
157 | [enable_versioning=$enableval], | |
158 | [enable_versioning=yes]) | |
159 | ||
160 | AC_ARG_ENABLE([oldest-abi], | |
161 | AC_HELP_STRING([--enable-oldest-abi=ABI], | |
162 | [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]), | |
163 | [oldest_abi=$enableval], | |
164 | [oldest_abi=no]) | |
62ab42d6 UD |
165 | if test "$oldest_abi" = yes || test "$oldest_abi" = no; then |
166 | oldest_abi=default | |
167 | else | |
168 | AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi") | |
169 | fi | |
170 | AC_SUBST(oldest_abi) | |
171 | ||
6b3a2224 | 172 | dnl Generic infrastructure for drop-in additions to libc. |
6b7f6183 RM |
173 | AC_ARG_ENABLE([add-ons], |
174 | AC_HELP_STRING([--enable-add-ons@<:@=DIRS...@:>@], | |
175 | [configure and build add-ons in DIR1,DIR2,... search for add-ons if no parameter given]), | |
61952351 | 176 | [case "$enableval" in |
9c4c0024 UD |
177 | yes) add_ons=`cd $srcdir && echo */configure | sed -e 's!/configure!!g'` |
178 | test "$add_ons" = "*" && add_ons= ;; | |
61952351 UD |
179 | *) add_ons=`echo "$enableval" | sed 's/,/ /g'`;; |
180 | esac], | |
181 | [add_ons=]) | |
182 | ||
8d4b5a8a | 183 | dnl Let the user avoid using TLS. Don't know why but... |
9cce206e | 184 | dnl XXX For now we disable support by default. |
6b7f6183 RM |
185 | AC_ARG_WITH([tls], |
186 | AC_HELP_STRING([--with-tls], | |
187 | [enable support for TLS]), | |
188 | [usetls=$withval], | |
189 | [usetls=no]) | |
8d4b5a8a | 190 | |
6b7f6183 RM |
191 | AC_ARG_WITH([__thread], |
192 | AC_HELP_STRING([--without-__thread], | |
193 | [do not use TLS features even when supporting them]), | |
194 | [use__thread=$withval], | |
195 | [use__thread=yes]) | |
5b8f26b4 | 196 | |
6b7f6183 RM |
197 | AC_ARG_ENABLE([hidden-plt], |
198 | AC_HELP_STRING([--disable-hidden-plt], | |
199 | [do not hide internal function calls to avoid PLT]), | |
200 | [hidden=$enableval], | |
201 | [hidden=yes]) | |
749a9a4f RM |
202 | if test "x$hidden" = xno; then |
203 | AC_DEFINE(NO_HIDDEN) | |
204 | fi | |
205 | ||
a1ceed7a | 206 | AC_CONFIG_SUBDIRS([ ])dnl Bonehead new Autoconf whines if we do it cleanly. |
57ba7bb4 | 207 | add_ons_pfx= |
da74e902 | 208 | if test x"$add_ons" != x; then |
57ba7bb4 | 209 | for f in $add_ons; do |
aa44a9de AJ |
210 | # Some sanity checks |
211 | if test "$f" = "crypt"; then | |
212 | AC_MSG_ERROR([ | |
213 | *** It seems that you're using an old \`crypt' add-on. crypt is now | |
214 | *** part of glibc and using the old add-on will not work with this | |
215 | *** release. Start again with fresh sources and without the old | |
216 | *** \`crypt' add-on.]) | |
217 | fi | |
218 | if test "$f" = "localedata"; then | |
219 | AC_MSG_ERROR([ | |
220 | *** It seems that you're using an old \`localedata' add-on. localedata | |
221 | *** is now part of glibc and using the old add-on will not work with | |
222 | *** this release. Start again with fresh sources and without the old | |
223 | *** \`localedata' add-on.]) | |
224 | fi | |
af6f3906 UD |
225 | # Test whether such a subdir really exists. |
226 | if test -d $srcdir/$f; then | |
227 | add_ons_pfx="$add_ons_pfx $f/" | |
a1ceed7a RM |
228 | dnl This variable is what AC_CONFIG_SUBDIRS is supposed to set, |
229 | dnl but the new Autoconf maintainers don't care about compatibility | |
230 | dnl so we cannot use it normally any more without complaints. | |
231 | subdirs="$subdirs $f" | |
af6f3906 UD |
232 | else |
233 | AC_MSG_ERROR(add-on directory \"$f\" does not exist) | |
234 | fi | |
57ba7bb4 UD |
235 | done |
236 | fi | |
ff3d7ed3 | 237 | |
5107cf1d UD |
238 | dnl On some platforms we cannot use dynamic loading. We must provide |
239 | dnl static NSS modules. | |
6b7f6183 RM |
240 | AC_ARG_ENABLE([static-nss], |
241 | AC_HELP_STRING([--enable-static-nss], | |
242 | [build static NSS modules @<:@default=no@:>@]), | |
243 | [static_nss=$enableval], | |
244 | [static_nss=no]) | |
834cef7c UD |
245 | dnl Enable static NSS also if we build no shared objects. |
246 | if test x"$static_nss" = xyes || test x"$shared" = xno; then | |
3172f58f | 247 | static_nss=yes |
5107cf1d UD |
248 | AC_DEFINE(DO_STATIC_NSS) |
249 | fi | |
250 | ||
6b7f6183 RM |
251 | AC_ARG_ENABLE([force-install], |
252 | AC_HELP_STRING([--disable-force-install], | |
253 | [don't force installation of files from this package, even if they are older than the installed files]), | |
254 | [force_install=$enableval], | |
255 | [force_install=yes]) | |
73237de3 UD |
256 | AC_SUBST(force_install) |
257 | ||
958f238f UD |
258 | dnl On some platforms we allow dropping compatibility with all kernel |
259 | dnl versions. | |
6b7f6183 RM |
260 | AC_ARG_ENABLE([kernel], |
261 | AC_HELP_STRING([--enable-kernel=VERSION], | |
262 | [compile for compatibility with kernel not older than VERSION]), | |
263 | [minimum_kernel=$enableval], | |
264 | []) | |
86cfe82d UD |
265 | dnl Prevent unreasonable values. |
266 | if test "$minimum_kernel" = yes || test "$minimum_kernel" = no; then | |
267 | # Better nothing than this. | |
268 | minimum_kernel="" | |
269e369f UD |
269 | else |
270 | if test "$minimum_kernel" = current; then | |
271 | minimum_kernel=`uname -r 2>/dev/null` || minimum_kernel= | |
272 | fi | |
86cfe82d | 273 | fi |
958f238f | 274 | |
6cc7d725 UD |
275 | dnl For the development we sometimes want gcc to issue even more warnings. |
276 | dnl This is not the default since many of the extra warnings are not | |
277 | dnl appropriate. | |
6b7f6183 RM |
278 | AC_ARG_ENABLE([all-warnings], |
279 | AC_HELP_STRING([--enable-all-warnings], | |
280 | [enable all useful warnings gcc can issue]), | |
281 | [all_warnings=$enableval], | |
282 | []) | |
6cc7d725 UD |
283 | AC_SUBST(all_warnings) |
284 | ||
28f540f4 | 285 | AC_CANONICAL_HOST |
8a523922 UD |
286 | |
287 | # The way shlib-versions is used to generate soversions.mk uses a | |
288 | # fairly simplistic model for name recognition that can't distinguish | |
289 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
290 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
291 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
292 | case "$host_os" in | |
293 | linux*) | |
294 | ;; | |
295 | gnu*) | |
296 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
297 | ;; | |
298 | esac | |
299 | ||
28f540f4 RM |
300 | # We keep the original values in `$config_*' and never modify them, so we |
301 | # can write them unchanged into config.make. Everything else uses | |
302 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
303 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
304 | ||
2f64b655 UD |
305 | # Don't allow vendor == "unknown" |
306 | test "$config_vendor" = unknown && config_vendor= | |
307 | config_os="`echo $config_os | sed 's/^unknown-//'`" | |
308 | ||
a2fe9c76 RM |
309 | # Some configurations imply other options. |
310 | case "$host_os" in | |
311 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
312 | # These systems always use GNU tools. | |
c8cf0b14 | 313 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
314 | esac |
315 | case "$host_os" in | |
7799b7b3 UD |
316 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
317 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 318 | ;; |
ffa8d2a0 | 319 | gnu* | linux* | freebsd* | netbsd* | sysv4* | solaris2* | irix6*) |
3776d592 RM |
320 | # These systems (almost) always use the ELF format. |
321 | elf=yes | |
84724245 | 322 | ;; |
5af3245a UD |
323 | aix*) |
324 | # These systems are always xcoff | |
325 | xcoff=yes | |
a711b01d | 326 | elf=no |
5af3245a | 327 | ;; |
a2fe9c76 RM |
328 | esac |
329 | ||
28f540f4 RM |
330 | machine=$config_machine |
331 | vendor=$config_vendor | |
332 | os=$config_os | |
333 | ||
a808d541 UD |
334 | # config.guess on some IBM machines says `rs6000' instead of `powerpc'. |
335 | # Unify this here. | |
336 | if test "$machine" = rs6000; then | |
337 | machine="powerpc" | |
338 | fi | |
339 | ||
f4b07664 RM |
340 | # Braindead PowerPC box with absolutely no FPU. |
341 | case "$machine-$host_os" in | |
342 | powerpc*-*soft) | |
343 | with_fp=no | |
344 | ;; | |
345 | esac | |
346 | ||
bdc8eb03 UD |
347 | ### |
348 | ### I put this here to prevent those annoying emails from people who cannot | |
349 | ### read and try to compile glibc on unsupported platforms. --drepper | |
350 | ### | |
351 | ### By using the undocumented --enable-hacker-mode option for configure | |
352 | ### one can skip this test to make the configuration not fail for unsupported | |
353 | ### platforms. | |
354 | ### | |
355 | if test -z "$enable_hacker_mode"; then | |
356 | case "$machine-$host_os" in | |
75d86c1f | 357 | *-linux* | *-gnu* | arm*-none* | powerpc-aix4.3.*) |
bdc8eb03 UD |
358 | ;; |
359 | *) | |
360 | echo "*** The GNU C library is currently not available for this platform." | |
361 | echo "*** So far nobody cared to port it and if there is no volunteer it" | |
362 | echo "*** might never happen. So, if you have interest to see glibc on" | |
363 | echo "*** this platform visit" | |
364 | echo "*** http://www.gnu.org/software/libc/porting.html" | |
365 | echo "*** and join the group of porters" | |
366 | exit 1 | |
367 | ;; | |
368 | esac | |
369 | fi | |
370 | ||
28f540f4 RM |
371 | dnl We need to use [ and ] for other purposes for a while now. |
372 | changequote(,)dnl | |
373 | # Expand the configuration machine name into a subdirectory by architecture | |
374 | # type and particular chip. | |
375 | case "$machine" in | |
f0523145 RM |
376 | a29k | am29000) base_machine=a29k machine=a29k ;; |
377 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
0c8b61e6 | 378 | arm*) base_machine=arm machine=arm/arm32/$machine ;; |
60c96635 UD |
379 | c3[012]) base_machine=cx0 machine=cx0/c30 ;; |
380 | c4[04]) base_machine=cx0 machine=cx0/c40 ;; | |
b15cb495 UD |
381 | hppa*64*) base_machine=hppa machine=hppa/hppa64 ;; |
382 | hppa*) base_machine=hppa machine=hppa/hppa1.1 ;; | |
a8922de8 | 383 | i[3456]86) base_machine=i386 machine=i386/$machine ;; |
d64e704c | 384 | ia64) base_machine=ia64 machine=ia64 ;; |
f0523145 RM |
385 | m680?0) base_machine=m68k machine=m68k/$machine ;; |
386 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
387 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
388 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
e077d10d | 389 | mips64*) base_machine=mips64 |
3217788f | 390 | case "$CC $CFLAGS $CPPFLAGS " in |
e077d10d AO |
391 | *" -mabi=n32 "*) mips_cc_abi=n32 ;; |
392 | *" -mabi=64 "*|*" -mabi=n64 "*) mips_cc_abi=64 ;; | |
393 | *" -mabi=32 "*|*" -mabi=o32 "*) mips_cc_abi=32 ;; | |
394 | *) mips_cc_abi=default ;; | |
395 | esac | |
396 | case $config_os in | |
397 | *abin32*) mips_config_abi=n32 ;; | |
398 | *abi64*|*abin64*) mips_config_abi=64 ;; | |
399 | *abi32*|*abio32*) mips_config_abi=32 ;; | |
400 | *) mips_config_abi=$mips_cc_abi ;; | |
401 | esac | |
402 | case $mips_config_abi in | |
403 | default) machine=mips/mips64/n32 mips_config_abi=n32 ;; | |
404 | n32) machine=mips/mips64/n32 ;; | |
405 | 64) machine=mips/mips64/n64 ;; | |
406 | 32) machine=mips/mips32/kern64 ;; | |
407 | esac | |
408 | machine=$machine/$config_machine | |
409 | if test $mips_config_abi != $mips_cc_abi; then | |
410 | # This won't make it to config.make, but we want to | |
411 | # set this in case configure tests depend on it. | |
412 | CPPFLAGS="$CPPFLAGS -mabi=$mips_config_abi" | |
413 | fi | |
414 | ;; | |
415 | mips*) base_machine=mips machine=mips/mips32/$machine ;; | |
92b27c74 UD |
416 | powerpc) base_machine=powerpc machine=powerpc/powerpc32 ;; |
417 | powerpc64) base_machine=powerpc machine=powerpc/powerpc64 ;; | |
136d4332 UD |
418 | s390) base_machine=s390 machine=s390/s390-32 ;; |
419 | s390x) base_machine=s390 machine=s390/s390-64 ;; | |
88615235 UD |
420 | sh3*) base_machine=sh machine=sh/sh3 ;; |
421 | sh4*) base_machine=sh machine=sh/sh4 ;; | |
ca34d7a7 UD |
422 | sparc | sparcv[67]) |
423 | base_machine=sparc machine=sparc/sparc32 ;; | |
424 | sparcv8 | supersparc | hypersparc) | |
425 | base_machine=sparc machine=sparc/sparc32/sparcv8 ;; | |
ae6b8730 RH |
426 | sparcv8plus | sparcv8plusa | sparcv9) |
427 | base_machine=sparc machine=sparc/sparc32/sparcv9 ;; | |
bb769ab6 UD |
428 | sparcv8plusb | sparcv9b) |
429 | base_machine=sparc machine=sparc/sparc32/sparcv9b ;; | |
ca34d7a7 UD |
430 | sparc64 | ultrasparc) |
431 | base_machine=sparc machine=sparc/sparc64 ;; | |
bb769ab6 UD |
432 | sparc64b | ultrasparc3) |
433 | base_machine=sparc machine=sparc/sparc64/sparcv9b ;; | |
0c8b61e6 | 434 | thumb*) base_machine=thumb machine=arm/thumb/$machine ;; |
3a2832a0 | 435 | *) base_machine=$machine ;; |
28f540f4 | 436 | esac |
f0523145 RM |
437 | changequote([,])dnl |
438 | AC_SUBST(base_machine) | |
28f540f4 | 439 | |
dfd2257a UD |
440 | if test "$base_machine" = "i386"; then |
441 | AC_DEFINE(USE_REGPARMS) | |
442 | fi | |
443 | ||
f0523145 | 444 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 445 | # This can take a while to compute. |
f0523145 | 446 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 447 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
448 | dnl We need to use [ and ] for other purposes for a while now. |
449 | changequote(,)dnl | |
28f540f4 RM |
450 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
451 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
452 | ||
453 | case "$os" in | |
454 | gnu*) | |
455 | base_os=mach/hurd ;; | |
883bc19b | 456 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 457 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 458 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 459 | base_os=unix/bsd ;; |
d586354e | 460 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 461 | base_os=unix/sysv ;; |
f802accb UD |
462 | irix6*) |
463 | base_os=unix/sysv/irix6/$os ;; | |
d586354e | 464 | solaris[2-9]*) |
28f540f4 | 465 | base_os=unix/sysv/sysv4 ;; |
908c3d5b UD |
466 | hpux*) |
467 | base_os=unix/sysv/hpux/$os ;; | |
75d86c1f UD |
468 | aix4.3*) |
469 | base_os=unix/sysv/aix/aix4.3 ;; | |
28f540f4 RM |
470 | none) |
471 | base_os=standalone ;; | |
472 | *) | |
473 | base_os='' ;; | |
474 | esac | |
475 | ||
476 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
477 | tail=$os | |
478 | ostry=$os | |
479 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
480 | ostry="$ostry /$o" | |
481 | tail=$o | |
75914335 | 482 | done |
28f540f4 RM |
483 | o=`echo $tail | sed 's/[0-9]*$//'` |
484 | if test $o != $tail; then | |
485 | ostry="$ostry /$o" | |
486 | fi | |
ec4b0518 UD |
487 | # For linux-gnu, try linux-gnu, then linux. |
488 | o=`echo $tail | sed 's/-.*$//'` | |
489 | if test $o != $tail; then | |
490 | ostry="$ostry /$o" | |
491 | fi | |
28f540f4 RM |
492 | |
493 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
494 | base= | |
495 | tail=$base_os | |
496 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
497 | set $b | |
498 | base="$base /$1" | |
499 | tail="$2" | |
500 | done | |
501 | ||
ae6b8730 | 502 | # For sparc/sparc32, try sparc/sparc32 and then sparc. |
28f540f4 RM |
503 | mach= |
504 | tail=$machine | |
505 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
506 | set $m | |
10ceac89 RM |
507 | # Prepend the machine's FPU directory unless --without-fp. |
508 | if test "$with_fp" = yes; then | |
509 | mach="$mach /$1/fpu" | |
f4b07664 RM |
510 | else |
511 | mach="$mach /$1/nofpu" | |
82d00cab | 512 | fi |
28f540f4 RM |
513 | mach="$mach /$1" |
514 | tail="$2" | |
515 | done | |
516 | ||
517 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
518 | changequote([,])dnl | |
519 | ||
520 | # Find what sysdep directories exist. | |
521 | sysnames= | |
57ba7bb4 UD |
522 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
523 | for d in $add_ons_pfx ''; do | |
524 | for b in $base ''; do | |
525 | for m0 in $mach ''; do | |
526 | for v in /$vendor ''; do | |
ae828bc6 | 527 | test "$v" = / && continue |
57ba7bb4 | 528 | for o in /$ostry ''; do |
ae828bc6 | 529 | test "$o" = / && continue |
57ba7bb4 UD |
530 | for m in $mach ''; do |
531 | if test "$m0$b$v$o$m"; then | |
532 | try="${d}sysdeps$m0$b$v$o$m" | |
533 | test -n "$enable_debug_configure" && | |
534 | echo "$0 [DEBUG]: try $try" >&2 | |
9c4c0024 | 535 | if test -d $srcdir/$try; then |
57ba7bb4 UD |
536 | sysnames="$sysnames $try" |
537 | { test -n "$o" || test -n "$b"; } && os_used=t | |
538 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
539 | fi | |
540 | fi | |
541 | done | |
28f540f4 RM |
542 | done |
543 | done | |
544 | done | |
545 | done | |
546 | done | |
57ba7bb4 | 547 | IFS="$ac_save_ifs" |
28f540f4 RM |
548 | |
549 | if test -z "$os_used" && test "$os" != none; then | |
550 | AC_MSG_ERROR(Operating system $os is not supported.) | |
551 | fi | |
552 | if test -z "$machine_used" && test "$machine" != none; then | |
553 | AC_MSG_ERROR(The $machine is not supported.) | |
554 | fi | |
555 | ||
556 | # We have now validated the configuration. | |
557 | ||
335aa320 | 558 | |
10ceac89 RM |
559 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
560 | # We prepend these rather than inserting them whereever the machine appears | |
561 | # because things specified by the machine's ELF ABI should override | |
562 | # OS-specific things, and should always be the same for any OS on the | |
563 | # machine (otherwise what's the point of an ABI?). | |
564 | if test "$elf" = yes; then | |
565 | elf_dirs= | |
57ba7bb4 | 566 | for d in $add_ons_pfx ''; do |
57ba7bb4 | 567 | for m in $mach; do |
9c4c0024 | 568 | if test -d $srcdir/${d}sysdeps$m/elf; then |
c2bb8cab | 569 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
570 | fi |
571 | done | |
28f540f4 | 572 | done |
57ba7bb4 | 573 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
574 | fi |
575 | ||
335aa320 | 576 | |
28f540f4 RM |
577 | # Expand the list of system names into a full list of directories |
578 | # from each element's parent name and Implies file (if present). | |
579 | set $sysnames | |
e50ec9f9 | 580 | names= |
28f540f4 RM |
581 | while test $# -gt 0; do |
582 | name=$1 | |
583 | shift | |
584 | ||
e50ec9f9 | 585 | case " $names " in *" $name "*) |
f332db02 RM |
586 | # Already in the list. |
587 | continue | |
e50ec9f9 | 588 | esac |
f332db02 RM |
589 | |
590 | # Report each name as we discover it, so there is no long pause in output. | |
0b4ee387 | 591 | echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD |
f332db02 | 592 | |
57ba7bb4 UD |
593 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
594 | ||
595 | case $name in | |
596 | /*) xsrcdir= ;; | |
597 | *) xsrcdir=$srcdir/ ;; | |
598 | esac | |
599 | test -n "$enable_debug_configure" && | |
600 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
601 | ||
602 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 603 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
604 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
605 | implied= | |
606 | for x in $implied_candidate; do | |
636ccfc8 | 607 | found=no |
57ba7bb4 UD |
608 | if test -d $xsrcdir$name_base/$x; then |
609 | implied="$implied $name_base/$x"; | |
636ccfc8 UD |
610 | found=yes |
611 | fi | |
612 | for d in $add_ons_pfx ''; do | |
613 | try="${d}sysdeps/$x" | |
614 | case $d in | |
615 | /*) try_srcdir= ;; | |
616 | *) try_srcdir=$srcdir/ ;; | |
617 | esac | |
618 | test -n "$enable_debug_configure" && | |
619 | echo "[DEBUG]: $name implied $x try($d) {$try_srcdir}$try" >&2 | |
620 | if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try; | |
621 | then | |
622 | implied="$implied $try" | |
623 | found=yes | |
624 | fi | |
625 | done | |
626 | if test $found = no; then | |
57ba7bb4 UD |
627 | AC_MSG_WARN($name/Implies specifies nonexistent $x) |
628 | fi | |
28f540f4 RM |
629 | done |
630 | else | |
631 | implied= | |
632 | fi | |
633 | ||
634 | # Add NAME to the list of names. | |
635 | names="$names $name" | |
636 | ||
637 | # Find the parent of NAME, using the empty string if it has none. | |
638 | changequote(,)dnl | |
57ba7bb4 | 639 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
640 | changequote([,])dnl |
641 | ||
642 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
643 | # the list of names to be processed (the argument list). We prepend the | |
644 | # implied names to the list and append the parent. We want implied | |
645 | # directories to come before further directories inferred from the | |
646 | # configuration components; this ensures that for sysv4, unix/common | |
647 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
648 | # after sysv4). | |
649 | sysnames="`echo $implied $* $parent`" | |
650 | test -n "$sysnames" && set $sysnames | |
651 | done | |
652 | ||
653 | # Add the default directories. | |
ecdc196c | 654 | default_sysnames=sysdeps/generic |
2de7874e | 655 | if test "$elf" = yes; then |
ecdc196c | 656 | default_sysnames="sysdeps/generic/elf $default_sysnames" |
2de7874e | 657 | fi |
ecdc196c | 658 | sysnames="$names $default_sysnames" |
f332db02 RM |
659 | AC_SUBST(sysnames) |
660 | # The other names were emitted during the scan. | |
ecdc196c | 661 | AC_MSG_RESULT($default_sysnames) |
28f540f4 | 662 | |
f332db02 RM |
663 | |
664 | ### Locate tools. | |
28f540f4 | 665 | |
28f540f4 | 666 | AC_PROG_INSTALL |
2b80a372 | 667 | if test "$INSTALL" = "${srcdir}/scripts/install-sh -c"; then |
28f540f4 | 668 | # The makefiles need to use a different form to find it in $srcdir. |
2b80a372 | 669 | INSTALL='\$(..)./scripts/install-sh -c' |
28f540f4 | 670 | fi |
0e3426bb | 671 | AC_PROG_LN_S |
ae828bc6 | 672 | |
4baa087a RM |
673 | AC_PROG_CC |
674 | if test $host != $build; then | |
675 | AC_CHECK_PROGS(BUILD_CC, gcc cc) | |
676 | fi | |
677 | AC_SUBST(cross_compiling) | |
678 | AC_PROG_CPP | |
58a7a325 UD |
679 | # We need the C++ compiler only for testing. |
680 | AC_PROG_CXX | |
4baa087a RM |
681 | LIBC_PROG_BINUTILS |
682 | AC_SUBST(MIG)dnl Needed by sysdeps/mach/configure.in | |
683 | ||
684 | # Accept binutils 2.13 or newer. | |
685 | AC_CHECK_PROG_VER(AS, $AS, --version, | |
686 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
73588175 | 687 | [2.1[3-9]*], AS=: critic_missing="$critic_missing as") |
4baa087a RM |
688 | AC_CHECK_PROG_VER(LD, $LD, --version, |
689 | [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)], | |
73588175 | 690 | [2.1[3-9]*], LD=: critic_missing="$critic_missing ld") |
4baa087a | 691 | |
a4301d41 UD |
692 | # We need the physical current working directory. We cannot use the |
693 | # "pwd -P" shell builtin since that's not portable. Instead we try to | |
694 | # find a pwd binary. Note that assigning to the PWD environment | |
695 | # variable might have some interesting side effects, so we don't do | |
696 | # that. | |
697 | AC_PATH_PROG(PWD_P, pwd, no) | |
698 | if test "$PWD_P" = no; then | |
699 | AC_MSG_ERROR(*** A pwd binary could not be found.) | |
700 | fi | |
701 | ||
63bda0c1 | 702 | # These programs are version sensitive. |
3a12e572 | 703 | AC_CHECK_TOOL_PREFIX |
4bca4c17 | 704 | AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v, |
90d1d40b RM |
705 | [version \([egcygnustpi-]*[0-9.]*\)], [3.[2-9]*], |
706 | critic_missing="$critic_missing gcc") | |
22e65f8f | 707 | AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version, |
8fc1e2ca | 708 | [GNU Make[^0-9]*\([0-9][0-9.]*\)], |
6b4e880f | 709 | [3.79* | 3.[89]*], critic_missing="$critic_missing make") |
63bda0c1 | 710 | |
22e65f8f | 711 | AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version, |
bdd421cc | 712 | [GNU gettext.* \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
713 | [0.10.3[6-9]* | 0.10.[4-9][0-9]* | 0.1[1-9]* | 0.[2-9][0-9]* | [1-9].*], |
714 | MSGFMT=: aux_missing="$aux_missing msgfmt") | |
63bda0c1 | 715 | AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, |
8b7fb588 | 716 | [GNU texinfo.* \([0-9][0-9.]*\)], |
aefdff34 RM |
717 | [4.*], |
718 | MAKEINFO=: aux_missing="$aux_missing makeinfo") | |
d6a97a28 | 719 | AC_CHECK_PROG_VER(SED, sed, --version, |
aec103d3 | 720 | [GNU sed version \([0-9]*\.[0-9.]*\)], |
aefdff34 RM |
721 | [3.0[2-9]*|3.[1-9]*|[4-9]*], |
722 | SED=: aux_missing="$aux_missing sed") | |
63bda0c1 | 723 | |
476e7d78 RM |
724 | AC_CHECK_PROGS(AUTOCONF, autoconf, no) |
725 | case "x$AUTOCONF" in | |
726 | xno|x|x:) AUTOCONF=no ;; | |
727 | *) | |
728 | AC_CACHE_CHECK(dnl | |
1400de2e | 729 | whether $AUTOCONF${ACFLAGS:+ }$ACFLAGS works, libc_cv_autoconf_works, [dnl |
476e7d78 RM |
730 | if (cd $srcdir; $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1); then |
731 | libc_cv_autoconf_works=yes | |
732 | else | |
733 | libc_cv_autoconf_works=no | |
734 | fi]) | |
735 | test $libc_cv_autoconf_works = yes || AUTOCONF=no | |
736 | ;; | |
737 | esac | |
738 | if test "x$with_cvs" = xyes && test "x$AUTOCONF" = xno; then | |
739 | # If --without-cvs they probably won't change configure.in, so no complaints. | |
740 | aux_missing="$aux_missing autoconf" | |
14519931 | 741 | fi |
1400de2e | 742 | |
32a448ed RM |
743 | test -n "$critic_missing" && AC_MSG_ERROR([ |
744 | *** These critical programs are missing or too old:$critic_missing | |
745 | *** Check the INSTALL file for required versions.]) | |
746 | ||
4bca4c17 | 747 | test -n "$aux_missing" && AC_MSG_WARN([ |
9c6fffc0 | 748 | *** These auxiliary programs are missing or incompatible versions:$aux_missing |
63bda0c1 UD |
749 | *** some features will be disabled. |
750 | *** Check the INSTALL file for required versions.]) | |
28f540f4 | 751 | |
dbe7a0f5 UD |
752 | # if using special system headers, find out the compiler's sekrit |
753 | # header directory and add that to the list. NOTE: Only does the right | |
754 | # thing on a system that doesn't need fixincludes. (Not presently a problem.) | |
755 | if test -n "$sysheaders"; then | |
756 | ccheaders=`$CC -print-file-name=include` | |
757 | SYSINCLUDES="-nostdinc -isystem $ccheaders -isystem $sysheaders" | |
758 | fi | |
759 | AC_SUBST(SYSINCLUDES) | |
760 | ||
97a47867 UD |
761 | # check if ranlib is necessary |
762 | AC_CACHE_CHECK(whether ranlib is necessary, libc_cv_ranlib_necessary, [dnl | |
763 | cat > conftest.c <<EOF | |
764 | int a; | |
765 | char b; | |
766 | void c(void) {} | |
767 | EOF | |
3217788f | 768 | $CC $CFLAGS $CPPFLAGS -c conftest.c |
72d4c33d | 769 | $AR cr conftest.a conftest.o |
97a47867 UD |
770 | cp conftest.a conftest2.a |
771 | $RANLIB conftest.a | |
772 | if cmp -s conftest.a conftest2.a; then | |
773 | libc_cv_ranlib_necessary=no | |
f38931a9 | 774 | else |
97a47867 UD |
775 | libc_cv_ranlib_necessary=yes |
776 | fi | |
777 | rm -rf conftest*]) | |
778 | if test "$libc_cv_ranlib_necessary" = no; then | |
779 | RANLIB=: | |
f38931a9 | 780 | fi |
f38931a9 | 781 | |
3911660e UD |
782 | # Test if LD_LIBRARY_PATH contains the notation for the current directory |
783 | # since this would lead to problems installing/building glibc. | |
784 | # LD_LIBRARY_PATH contains the current directory if one of the following | |
785 | # is true: | |
786 | # - one of the terminals (":" and ";") is the first or last sign | |
787 | # - two terminals occur directly after each other | |
788 | # - the path contains an element with a dot in it | |
789 | AC_MSG_CHECKING(LD_LIBRARY_PATH variable) | |
790 | changequote(,)dnl | |
791 | case ${LD_LIBRARY_PATH} in | |
792 | [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) | |
b3a86ae1 | 793 | ld_library_path_setting="contains current directory" |
3911660e UD |
794 | ;; |
795 | *) | |
796 | ld_library_path_setting="ok" | |
797 | ;; | |
798 | esac | |
799 | changequote([,])dnl | |
800 | AC_MSG_RESULT($ld_library_path_setting) | |
801 | if test "$ld_library_path_setting" != "ok"; then | |
63bda0c1 UD |
802 | AC_MSG_ERROR([ |
803 | *** LD_LIBRARY_PATH shouldn't contain the current directory when | |
804 | *** building glibc. Please change the environment variable | |
805 | *** and run configure again.]) | |
3911660e | 806 | fi |
8e31cf7e | 807 | |
74bd2300 UD |
808 | AC_CACHE_CHECK(whether GCC supports -static-libgcc, libc_cv_gcc_static_libgcc, [dnl |
809 | if $CC -v -static-libgcc 2>&1 | grep -q 'unrecognized option.*static-libgcc'; then | |
810 | libc_cv_gcc_static_libgcc= | |
811 | else | |
812 | libc_cv_gcc_static_libgcc=-static-libgcc | |
813 | fi]) | |
814 | AC_SUBST(libc_cv_gcc_static_libgcc) | |
815 | ||
84384f5b | 816 | AC_PATH_PROG(BASH, bash, no) |
a18f587d | 817 | if test "$BASH" != no && |
f43ce637 | 818 | $BASH -c 'test "$BASH_VERSINFO" \ |
6973fc01 | 819 | && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then |
84384f5b UD |
820 | libc_cv_have_bash2=yes |
821 | else | |
822 | libc_cv_have_bash2=no | |
823 | fi | |
824 | AC_SUBST(libc_cv_have_bash2) | |
825 | ||
5290baf0 UD |
826 | dnl We need a ksh compatible shell for tzselect. |
827 | if test "$BASH" = no; then | |
828 | AC_PATH_PROG(KSH, ksh, no) | |
829 | if test "$KSH" = no; then | |
830 | libc_cv_have_ksh=no | |
831 | else | |
832 | libc_cv_have_ksh=yes | |
833 | fi | |
834 | else | |
835 | KSH="$BASH" | |
836 | AC_SUBST(KSH) | |
837 | libc_cv_have_ksh=yes | |
838 | fi | |
839 | AC_SUBST(libc_cv_have_ksh) | |
840 | ||
5aa8ff62 | 841 | AC_PROG_AWK |
c0016081 | 842 | AC_PATH_PROG(PERL, perl, no) |
2fd5d029 RM |
843 | if test "$PERL" != no && |
844 | (eval `$PERL -V:apiversion`; test `expr "$apiversion" \< 5` -ne 0); then | |
845 | PERL=no | |
ecb06196 | 846 | fi |
2f512715 AS |
847 | AC_PATH_PROG(INSTALL_INFO, install-info, no, |
848 | $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin) | |
2de00372 UD |
849 | AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin) |
850 | ||
b8dc6a10 | 851 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
852 | echo '#include <stddef.h> |
853 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
854 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
855 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
856 | libc_cv_signed_size_t=no | |
857 | else | |
858 | libc_cv_signed_size_t=yes | |
859 | fi | |
860 | rm -f conftest*]) | |
28f540f4 RM |
861 | if test $libc_cv_signed_size_t = yes; then |
862 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
863 | cat >> confdefs.h <<\EOF | |
864 | #undef __SIZE_TYPE__ | |
865 | #define __SIZE_TYPE__ unsigned | |
866 | EOF | |
867 | fi | |
868 | ||
b8dc6a10 | 869 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
870 | AC_TRY_COMPILE(dnl |
871 | [#define __need_size_t | |
872 | #define __need_wchar_t | |
873 | #include <stddef.h> | |
874 | #define __need_NULL | |
875 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
876 | #ifdef offsetof | |
877 | #error stddef.h ignored __need_* | |
878 | #endif | |
879 | if (&size == NULL || &wchar == NULL) abort ();], | |
880 | libc_cv_friendly_stddef=yes, | |
881 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
882 | if test $libc_cv_friendly_stddef = yes; then |
883 | config_vars="$config_vars | |
884 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
885 | fi | |
886 | ||
b8dc6a10 RM |
887 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
888 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
889 | cat > conftest.S <<EOF |
890 | #include "confdefs.h" | |
891 | /* Nothing whatsoever. */ | |
892 | EOF | |
3217788f | 893 | if AC_TRY_COMMAND(${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&AS_MESSAGE_LOG_FD); then |
28f540f4 RM |
894 | libc_cv_need_minus_P=no |
895 | else | |
896 | libc_cv_need_minus_P=yes | |
897 | fi | |
898 | rm -f conftest*]) | |
28f540f4 RM |
899 | if test $libc_cv_need_minus_P = yes; then |
900 | config_vars="$config_vars | |
901 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
902 | fi | |
903 | ||
2293395f UD |
904 | AC_MSG_CHECKING(whether .text pseudo-op must be used) |
905 | AC_CACHE_VAL(libc_cv_dot_text, [dnl | |
906 | cat > conftest.s <<EOF | |
907 | .text | |
908 | EOF | |
909 | libc_cv_dot_text= | |
3217788f | 910 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
2293395f UD |
911 | libc_cv_dot_text=.text |
912 | fi | |
913 | rm -f conftest*]) | |
914 | if test -z "$libc_cv_dot_text"; then | |
915 | AC_MSG_RESULT(no) | |
916 | else | |
917 | AC_MSG_RESULT(yes) | |
918 | fi | |
919 | ||
b8dc6a10 RM |
920 | AC_CACHE_CHECK(for assembler global-symbol directive, |
921 | libc_cv_asm_global_directive, [dnl | |
9a70fcab | 922 | libc_cv_asm_global_directive=UNKNOWN |
908c3d5b | 923 | for ac_globl in .globl .global .EXPORT; do |
9a70fcab | 924 | cat > conftest.s <<EOF |
2293395f | 925 | ${libc_cv_dot_text} |
908c3d5b | 926 | ${ac_globl} foo |
ae1025be | 927 | foo: |
9a70fcab | 928 | EOF |
3217788f | 929 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a70fcab UD |
930 | libc_cv_asm_global_directive=${ac_globl} |
931 | fi | |
932 | rm -f conftest* | |
933 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
934 | done]) | |
9a70fcab UD |
935 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
936 | AC_MSG_ERROR(cannot determine asm global directive) | |
937 | else | |
938 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
939 | fi | |
940 | ||
b8dc6a10 | 941 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 942 | cat > conftest.s <<EOF |
2293395f | 943 | ${libc_cv_dot_text} |
ae1025be | 944 | foo: |
df2a0c93 | 945 | .set glibc_conftest_frobozz,foo |
9a70fcab | 946 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 947 | EOF |
df2a0c93 RM |
948 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
949 | # (but it doesn't work), so we must do a linking check to be sure. | |
950 | cat > conftest1.c <<\EOF | |
951 | extern int glibc_conftest_frobozz; | |
640f0119 | 952 | void _start() { glibc_conftest_frobozz = 1; } |
df2a0c93 RM |
953 | EOF |
954 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
640f0119 | 955 | -nostartfiles -nostdlib \ |
0b4ee387 | 956 | -o conftest conftest.s conftest1.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
e215c478 RM |
957 | libc_cv_asm_set_directive=yes |
958 | else | |
959 | libc_cv_asm_set_directive=no | |
960 | fi | |
65b3cbcb | 961 | rm -f conftest*]) |
e215c478 RM |
962 | if test $libc_cv_asm_set_directive = yes; then |
963 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
964 | fi | |
965 | ||
b88ac073 RM |
966 | AC_CACHE_CHECK(for assembler .type directive prefix, |
967 | libc_cv_asm_type_prefix, [dnl | |
968 | libc_cv_asm_type_prefix=no | |
969 | for ac_try_prefix in '@' '%' '#'; do | |
970 | cat > conftest.s <<EOF | |
971 | ${libc_cv_dot_text} | |
972 | ${libc_cv_asm_global_directive} foo | |
973 | .type foo, ${ac_try_prefix}object | |
974 | .size foo, 1 | |
975 | foo: | |
976 | .byte 1 | |
977 | EOF | |
3217788f | 978 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
b88ac073 RM |
979 | libc_cv_asm_type_prefix=${ac_try_prefix} |
980 | fi | |
981 | rm -f conftest* | |
982 | test "x$libc_cv_asm_type_prefix" != xno && break | |
983 | done]) | |
984 | if test "x$libc_cv_asm_type_prefix" != xno; then | |
985 | AC_DEFINE_UNQUOTED(ASM_TYPE_DIRECTIVE_PREFIX, ${libc_cv_asm_type_prefix}) | |
986 | fi | |
987 | ||
2aa15430 | 988 | # The Aix ld uses global .symbol_names instead of symbol_names. |
92b27c74 UD |
989 | # Unfortunately also used in the PPC64 ELF ABI. |
990 | case "${os}${machine}" in | |
991 | aix4.3* | linux*powerpc/powerpc64*) | |
2aa15430 UD |
992 | AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME) |
993 | esac | |
994 | ||
377a515b UD |
995 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
996 | [cat > conftest.s <<EOF | |
2293395f | 997 | ${libc_cv_dot_text} |
4cca6b86 | 998 | _sym: |
377a515b UD |
999 | .symver _sym,sym@VERS |
1000 | EOF | |
3217788f | 1001 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
377a515b UD |
1002 | libc_cv_asm_symver_directive=yes |
1003 | else | |
1004 | libc_cv_asm_symver_directive=no | |
1005 | fi | |
1006 | rm -f conftest*]) | |
1007 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
1008 | if test $libc_cv_asm_symver_directive = yes; then | |
1009 | cat > conftest.s <<EOF | |
2293395f | 1010 | ${libc_cv_dot_text} |
4cca6b86 | 1011 | _sym: |
377a515b UD |
1012 | .symver _sym,sym@VERS |
1013 | EOF | |
1014 | cat > conftest.map <<EOF | |
f43ce637 | 1015 | VERS_1 { |
377a515b UD |
1016 | global: sym; |
1017 | }; | |
f43ce637 UD |
1018 | |
1019 | VERS_2 { | |
1020 | global: sym; | |
1021 | } VERS_1; | |
377a515b | 1022 | EOF |
3217788f RM |
1023 | if ${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then |
1024 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $LDFLAGS -shared | |
1025 | -o conftest.so conftest.o | |
1026 | -nostartfiles -nostdlib | |
1027 | -Wl,--version-script,conftest.map | |
c2f55635 | 1028 | 1>&AS_MESSAGE_LOG_FD]); |
377a515b UD |
1029 | then |
1030 | libc_cv_ld_version_script_option=yes | |
1031 | else | |
1032 | libc_cv_ld_version_script_option=no | |
1033 | fi | |
1034 | else | |
1035 | libc_cv_ld_version_script_option=no | |
1036 | fi | |
1037 | else | |
1038 | libc_cv_ld_version_script_option=no | |
1039 | fi | |
1040 | rm -f conftest*]) | |
7499a22a RM |
1041 | if test $shared != no && |
1042 | test $libc_cv_asm_symver_directive = yes && | |
650425ce UD |
1043 | test $libc_cv_ld_version_script_option = yes && |
1044 | test $enable_versioning = yes; then | |
377a515b UD |
1045 | VERSIONING=yes |
1046 | AC_DEFINE(DO_VERSIONING) | |
1047 | else | |
1048 | VERSIONING=no | |
1049 | fi | |
1050 | AC_SUBST(VERSIONING) | |
1051 | ||
102a3e8f | 1052 | if test $elf = yes && test $shared != no && test $VERSIONING = no; then |
f43ce637 | 1053 | echo "\ |
f4017d20 | 1054 | *** WARNING: You should not compile GNU libc without versioning. Not using |
f43ce637 UD |
1055 | *** versioning will introduce incompatibilities so that old binaries |
1056 | *** will not run anymore. | |
50304ef0 | 1057 | *** For versioning you need recent binutils (binutils-2.8.1.0.23 or newer)." |
f43ce637 | 1058 | fi |
fd26970f UD |
1059 | if test $elf = yes; then |
1060 | AC_CACHE_CHECK(for .previous assembler directive, | |
1061 | libc_cv_asm_previous_directive, [dnl | |
1062 | cat > conftest.s <<EOF | |
1063 | .section foo_section | |
1064 | .previous | |
1065 | EOF | |
3217788f | 1066 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1067 | libc_cv_asm_previous_directive=yes |
1068 | else | |
1069 | libc_cv_asm_previous_directive=no | |
1070 | fi | |
1071 | rm -f conftest*]) | |
1072 | if test $libc_cv_asm_previous_directive = yes; then | |
1073 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
1074 | else | |
1075 | AC_CACHE_CHECK(for .popsection assembler directive, | |
1076 | libc_cv_asm_popsection_directive, [dnl | |
1077 | cat > conftest.s <<EOF | |
1078 | .pushsection foo_section | |
1079 | .popsection | |
1080 | EOF | |
3217788f | 1081 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
fd26970f UD |
1082 | libc_cv_asm_popsection_directive=yes |
1083 | else | |
1084 | libc_cv_asm_popsection_directive=no | |
1085 | fi | |
1086 | rm -f conftest*]) | |
1087 | if test $libc_cv_asm_popsection_directive = yes; then | |
1088 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
1089 | fi | |
1090 | fi | |
2d499f55 UD |
1091 | AC_CACHE_CHECK(for .protected and .hidden assembler directive, |
1092 | libc_cv_asm_protected_directive, [dnl | |
1093 | cat > conftest.s <<EOF | |
1094 | .protected foo | |
1095 | foo: | |
1096 | .hidden bar | |
1097 | bar: | |
1098 | EOF | |
3217788f | 1099 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
2d499f55 UD |
1100 | libc_cv_asm_protected_directive=yes |
1101 | else | |
1102 | libc_cv_asm_protected_directive=no | |
1103 | fi | |
1104 | rm -f conftest*]) | |
1105 | AC_SUBST(libc_cv_asm_protected_directive) | |
5688da55 | 1106 | AC_DEFINE(HAVE_PROTECTED) |
9bd64602 | 1107 | AC_DEFINE(HAVE_HIDDEN) |
0fb7851f | 1108 | |
0d01dace UD |
1109 | if test $libc_cv_asm_protected_directive = yes; then |
1110 | AC_CACHE_CHECK(whether __attribute__((visibility())) is supported, | |
1111 | libc_cv_visibility_attribute, | |
1112 | [cat > conftest.c <<EOF | |
1113 | int foo __attribute__ ((visibility ("hidden"))) = 1; | |
1114 | int bar __attribute__ ((visibility ("protected"))) = 1; | |
1115 | EOF | |
1116 | libc_cv_visibility_attribute=no | |
61cea1c3 | 1117 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
0d01dace UD |
1118 | if grep '\.hidden.*foo' conftest.s >/dev/null; then |
1119 | if grep '\.protected.*bar' conftest.s >/dev/null; then | |
1120 | libc_cv_visibility_attribute=yes | |
1121 | fi | |
1122 | fi | |
1123 | fi | |
1124 | rm -f conftest.[cs] | |
1125 | ]) | |
1126 | if test $libc_cv_visibility_attribute = yes; then | |
1127 | AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE) | |
1128 | fi | |
1129 | fi | |
1130 | ||
37ba7d66 UD |
1131 | if test $libc_cv_visibility_attribute = yes; then |
1132 | AC_CACHE_CHECK(for broken __attribute__((visibility())), | |
1133 | libc_cv_broken_visibility_attribute, | |
1134 | [cat > conftest.c <<EOF | |
1135 | int foo (int x); | |
1136 | int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden"))); | |
1137 | int bar (int x) { return x; } | |
1138 | EOF | |
1139 | libc_cv_broken_visibility_attribute=yes | |
61cea1c3 | 1140 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s1>&AS_MESSAGE_LOG_FD); then |
37ba7d66 UD |
1141 | changequote(,)dnl |
1142 | if grep '\.hidden[ _]foo' conftest.s >/dev/null; then | |
1143 | changequote([,])dnl | |
1144 | libc_cv_broken_visibility_attribute=no | |
1145 | fi | |
1146 | fi | |
1147 | rm -f conftest.c conftest.s | |
1148 | ]) | |
1149 | if test $libc_cv_broken_visibility_attribute = yes; then | |
1150 | AC_DEFINE(HAVE_BROKEN_VISIBILITY_ATTRIBUTE) | |
1151 | fi | |
1152 | fi | |
1153 | ||
1154 | AC_CACHE_CHECK(for broken __attribute__((alias())), | |
1155 | libc_cv_broken_alias_attribute, | |
1156 | [cat > conftest.c <<EOF | |
1157 | extern int foo (int x) __asm ("xyzzy"); | |
1158 | int bar (int x) { return x; } | |
48b8e846 UD |
1159 | extern __typeof (bar) foo __attribute ((weak, alias ("bar"))); |
1160 | extern int dfoo; | |
1161 | extern __typeof (dfoo) dfoo __asm ("abccb"); | |
1162 | int dfoo = 1; | |
37ba7d66 UD |
1163 | EOF |
1164 | libc_cv_broken_alias_attribute=yes | |
61cea1c3 | 1165 | if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then |
48b8e846 UD |
1166 | if grep 'xyzzy' conftest.s >/dev/null && |
1167 | grep 'abccb' conftest.s >/dev/null; then | |
37ba7d66 UD |
1168 | libc_cv_broken_alias_attribute=no |
1169 | fi | |
1170 | fi | |
1171 | rm -f conftest.c conftest.s | |
1172 | ]) | |
1173 | if test $libc_cv_broken_alias_attribute = yes; then | |
1174 | AC_DEFINE(HAVE_BROKEN_ALIAS_ATTRIBUTE) | |
1175 | fi | |
1176 | ||
0d01dace UD |
1177 | if test $libc_cv_visibility_attribute = yes -a $gnu_ld = yes; then |
1178 | AC_CACHE_CHECK(whether to put _rtld_local into .sdata section, | |
1179 | libc_cv_have_sdata_section, | |
1180 | [echo "int i;" > conftest.c | |
1181 | libc_cv_have_sdata_section=no | |
3217788f | 1182 | if ${CC-cc} $LDFLAGS -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \ |
0d01dace UD |
1183 | | grep '\.sdata' >/dev/null; then |
1184 | libc_cv_have_sdata_section=yes | |
1185 | fi | |
1186 | rm -f conftest.c conftest.so | |
1187 | ]) | |
1188 | if test $libc_cv_have_sdata_section = yes; then | |
1189 | AC_DEFINE(HAVE_SDATA_SECTION) | |
1190 | fi | |
1191 | fi | |
1192 | ||
5241882c UD |
1193 | AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support, |
1194 | libc_cv_initfinit_array, [dnl | |
1195 | cat > conftest.c <<EOF | |
1196 | int _start (void) { return 0; } | |
1197 | int __start (void) { return 0; } | |
1198 | int foo (void) { return 1; } | |
2c617417 | 1199 | int (*fp) (void) __attribute__ ((section (".init_array"))) = foo; |
5241882c | 1200 | EOF |
3217788f | 1201 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c |
c2f55635 | 1202 | -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD]) |
5241882c UD |
1203 | then |
1204 | if readelf -S conftest | fgrep INIT_ARRAY > /dev/null; then | |
1205 | libc_cv_initfinit_array=yes | |
1206 | else | |
1207 | libc_cv_initfinit_array=no | |
1208 | fi | |
1209 | else | |
1210 | libc_cv_initfinit_array=no | |
1211 | fi | |
1212 | rm -f conftest*]) | |
1213 | AC_SUBST(libc_cv_initfinit_array) | |
1214 | if test $libc_cv_initfinit_array = yes; then | |
1215 | AC_DEFINE(HAVE_INITFINI_ARRAY) | |
1216 | fi | |
1217 | ||
c776b3d7 UD |
1218 | AC_CACHE_CHECK(for libunwind-support in compiler, |
1219 | libc_cv_cc_with_libunwind, [dnl | |
1220 | AC_TRY_LINK([#include <libunwind.h>], [ | |
1221 | unw_context_t uc; | |
1222 | unw_cursor_t c; | |
1223 | unw_getcontext (&uc); | |
1224 | unw_init_local (&c, &uc)], | |
1225 | libc_cv_cc_with_libunwind=yes, libc_cv_cc_with_libunwind=no)]) | |
1226 | AC_SUBST(libc_cv_cc_with_libunwind) | |
1227 | if test $libc_cv_cc_with_libunwind = yes; then | |
1228 | AC_DEFINE(HAVE_CC_WITH_LIBUNWIND) | |
1229 | fi | |
1230 | ||
0fb7851f UD |
1231 | AC_CACHE_CHECK(for -z nodelete option, |
1232 | libc_cv_z_nodelete, [dnl | |
1233 | cat > conftest.c <<EOF | |
1234 | int _start (void) { return 42; } | |
1235 | EOF | |
3217788f RM |
1236 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1237 | -shared -o conftest.so conftest.c | |
35cd3c97 | 1238 | -nostartfiles -nostdlib |
c2f55635 | 1239 | -Wl,--enable-new-dtags,-z,nodelete 1>&AS_MESSAGE_LOG_FD]) |
0fb7851f UD |
1240 | then |
1241 | libc_cv_z_nodelete=yes | |
1242 | else | |
1243 | libc_cv_z_nodelete=no | |
1244 | fi | |
1245 | rm -f conftest*]) | |
1246 | AC_SUBST(libc_cv_z_nodelete) | |
2f54c82d UD |
1247 | |
1248 | AC_CACHE_CHECK(for -z nodlopen option, | |
1249 | libc_cv_z_nodlopen, [dnl | |
1250 | cat > conftest.c <<EOF | |
1251 | int _start (void) { return 42; } | |
1252 | EOF | |
3217788f RM |
1253 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1254 | -shared -o conftest.so conftest.c | |
35cd3c97 | 1255 | -nostartfiles -nostdlib |
c2f55635 | 1256 | -Wl,--enable-new-dtags,-z,nodlopen 1>&AS_MESSAGE_LOG_FD]) |
2f54c82d UD |
1257 | then |
1258 | libc_cv_z_nodlopen=yes | |
1259 | else | |
1260 | libc_cv_z_nodlopen=no | |
1261 | fi | |
1262 | rm -f conftest*]) | |
1263 | AC_SUBST(libc_cv_z_nodlopen) | |
5d916713 UD |
1264 | |
1265 | AC_CACHE_CHECK(for -z initfirst option, | |
1266 | libc_cv_z_initfirst, [dnl | |
1267 | cat > conftest.c <<EOF | |
1268 | int _start (void) { return 42; } | |
1269 | EOF | |
3217788f RM |
1270 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1271 | -shared -o conftest.so conftest.c | |
35cd3c97 | 1272 | -nostartfiles -nostdlib |
c2f55635 | 1273 | -Wl,--enable-new-dtags,-z,initfirst 1>&AS_MESSAGE_LOG_FD]) |
5d916713 UD |
1274 | then |
1275 | libc_cv_z_initfirst=yes | |
1276 | else | |
1277 | libc_cv_z_initfirst=no | |
1278 | fi | |
1279 | rm -f conftest*]) | |
1280 | AC_SUBST(libc_cv_z_initfirst) | |
639c3248 | 1281 | |
ed20b3d9 UD |
1282 | AC_CACHE_CHECK(for -z relro option, |
1283 | libc_cv_z_relro, [dnl | |
1284 | if AC_TRY_COMMAND([${CC-cc} -v --help 2>&1|grep "z relro" 1>&AS_MESSAGE_LOG_FD]) | |
1285 | then | |
1286 | libc_cv_z_relro=yes | |
1287 | else | |
1288 | libc_cv_z_relro=no | |
1289 | fi]) | |
1290 | AC_SUBST(libc_cv_z_relro) | |
cb6ee14a UD |
1291 | if test $libc_cv_z_relro = yes; then |
1292 | AC_DEFINE(HAVE_Z_RELRO) | |
1293 | fi | |
ed20b3d9 | 1294 | |
639c3248 UD |
1295 | AC_CACHE_CHECK(for -Bgroup option, |
1296 | libc_cv_Bgroup, [dnl | |
1297 | cat > conftest.c <<EOF | |
1298 | int _start (void) { return 42; } | |
1299 | EOF | |
3217788f RM |
1300 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1301 | -shared -o conftest.so conftest.c | |
1302 | -Wl,-Bgroup -nostdlib 1>&AS_MESSAGE_LOG_FD]) | |
639c3248 UD |
1303 | then |
1304 | libc_cv_Bgroup=yes | |
1305 | else | |
1306 | libc_cv_Bgroup=no | |
1307 | fi | |
1308 | rm -f conftest*]) | |
1309 | AC_SUBST(libc_cv_Bgroup) | |
a711b01d | 1310 | |
35915ec8 UD |
1311 | ASFLAGS_config= |
1312 | AC_CACHE_CHECK(whether --noexecstack is desirable for .S files, | |
1313 | libc_cv_as_noexecstack, [dnl | |
1314 | cat > conftest.c <<EOF | |
1315 | void foo (void) { } | |
1316 | EOF | |
1317 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS | |
1318 | -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \ | |
1319 | && grep -q .note.GNU-stack conftest.s \ | |
1320 | && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wa,--noexecstack | |
1321 | -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD]) | |
1322 | then | |
1323 | libc_cv_as_noexecstack=yes | |
1324 | else | |
1325 | libc_cv_as_noexecstack=no | |
1326 | fi | |
1327 | rm -f conftest*]) | |
1328 | if test $libc_cv_as_noexecstack = yes; then | |
1329 | ASFLAGS_config="$ASFLAGS_config -Wa,--noexecstack" | |
1330 | fi | |
1331 | AC_SUBST(ASFLAGS_config) | |
2abf9ff1 | 1332 | |
a711b01d UD |
1333 | AC_CACHE_CHECK(for -z combreloc, |
1334 | libc_cv_z_combreloc, [dnl | |
1335 | cat > conftest.c <<EOF | |
d555194c UD |
1336 | extern int bar (int); |
1337 | extern int mumble; | |
1338 | int foo (void) { return bar (mumble); } | |
a711b01d | 1339 | EOF |
3217788f RM |
1340 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
1341 | -shared -o conftest.so conftest.c | |
35cd3c97 | 1342 | -nostdlib -nostartfiles |
c2f55635 | 1343 | -Wl,-z,combreloc 1>&AS_MESSAGE_LOG_FD]) |
a711b01d UD |
1344 | then |
1345 | dnl The following test is a bit weak. We must use a tool which can test | |
1346 | dnl cross-platform since the gcc used can be a cross compiler. Without | |
1347 | dnl introducing new options this is not easily doable. Instead use a tool | |
1348 | dnl which always is cross-platform: readelf. To detect whether -z combreloc | |
1349 | dnl look for a section named .rel.dyn. | |
fdde8349 UD |
1350 | if readelf -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then |
1351 | libc_cv_z_combreloc=yes | |
1352 | else | |
1353 | libc_cv_z_combreloc=no | |
a711b01d | 1354 | fi |
fdde8349 UD |
1355 | else |
1356 | libc_cv_z_combreloc=no | |
a711b01d UD |
1357 | fi |
1358 | rm -f conftest*]) | |
fdde8349 UD |
1359 | if test "$libc_cv_z_combreloc" = yes; then |
1360 | AC_DEFINE(HAVE_Z_COMBRELOC) | |
1361 | fi | |
2abf9ff1 RM |
1362 | AC_SUBST(libc_cv_z_combreloc) |
1363 | ||
1364 | AC_CACHE_CHECK(for -z execstack, | |
1365 | libc_cv_z_execstack, [dnl | |
1366 | cat > conftest.c <<EOF | |
1367 | int _start (void) { return 42; } | |
1368 | EOF | |
1369 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS | |
1370 | -shared -o conftest.so conftest.c | |
1371 | -Wl,-z,execstack -nostdlib | |
1372 | 1>&AS_MESSAGE_LOG_FD]) | |
1373 | then | |
1374 | libc_cv_z_execstack=yes | |
1375 | else | |
1376 | libc_cv_z_execstack=no | |
1377 | fi | |
1378 | rm -f conftest*]) | |
1379 | AC_SUBST(libc_cv_z_execstack) | |
c9c60884 UD |
1380 | |
1381 | AC_CACHE_CHECK(for -fpie, libc_cv_fpie, [dnl | |
1382 | cat > conftest.c <<EOF | |
1383 | int foo; | |
49803108 | 1384 | main () { return 0;} |
c9c60884 UD |
1385 | EOF |
1386 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -fpie | |
1387 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
1388 | then | |
1389 | libc_cv_fpie=yes | |
1390 | else | |
1391 | libc_cv_fpie=no | |
1392 | fi | |
1393 | rm -f conftest*]) | |
1394 | ||
1395 | AC_SUBST(libc_cv_fpie) | |
fd26970f | 1396 | fi |
49803108 AJ |
1397 | |
1398 | AC_CACHE_CHECK(for -fno-unit-at-a-time, libc_cv_fno_unit_at_a_time, [dnl | |
1399 | cat > conftest.c <<EOF | |
1400 | int foo; | |
1401 | EOF | |
1402 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fno-unit-at-a-time | |
1403 | conftest.c 1>&AS_MESSAGE_LOG_FD]) | |
1404 | then | |
1405 | libc_cv_fno_unit_at_a_time=yes | |
1406 | else | |
1407 | libc_cv_fno_unit_at_a_time=no | |
1408 | fi | |
1409 | rm -f conftest*]) | |
1410 | if test $libc_cv_fno_unit_at_a_time = yes; then | |
1411 | fno_unit_at_a_time=-fno-unit-at-a-time | |
1412 | fi | |
1413 | AC_SUBST(fno_unit_at_a_time) | |
fd26970f | 1414 | |
b8dc6a10 RM |
1415 | if test $elf != yes; then |
1416 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
1417 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 | 1418 | asm (".section .fini"); |
2293395f | 1419 | asm ("${libc_cv_dot_text}");], |
b8dc6a10 RM |
1420 | libc_cv_have_initfini=yes, |
1421 | libc_cv_have_initfini=no)]) | |
1422 | AC_SUBST(libc_cv_have_initfini)dnl | |
1423 | if test $libc_cv_have_initfini = yes; then | |
1424 | AC_DEFINE(HAVE_INITFINI) | |
1425 | fi | |
1426 | fi | |
e215c478 | 1427 | |
e26dd47f UD |
1428 | if test $elf = yes -a $gnu_ld = yes; then |
1429 | AC_CACHE_CHECK(whether cc puts quotes around section names, | |
1430 | libc_cv_have_section_quotes, | |
1431 | [cat > conftest.c <<EOF | |
1432 | static const int foo | |
1433 | __attribute__ ((section ("bar"))) = 1; | |
1434 | EOF | |
1435 | if ${CC-cc} -S conftest.c -o conftest.s; then | |
1436 | if grep '\.section.*"bar"' conftest.s >/dev/null; then | |
1437 | libc_cv_have_section_quotes=yes | |
1438 | else | |
1439 | libc_cv_have_section_quotes=no | |
1440 | fi | |
1441 | else | |
1442 | libc_cv_have_section_quotes=unknown | |
1443 | fi | |
1444 | rm -f conftest.[cs] | |
1445 | ]) | |
1446 | if test $libc_cv_have_section_quotes = yes; then | |
1447 | AC_DEFINE(HAVE_SECTION_QUOTES) | |
1448 | fi | |
1449 | fi | |
1450 | ||
9a0a462c UD |
1451 | dnl AC_CHECK_ASM_UNDERSCORE([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]) |
1452 | AC_DEFUN(AC_CHECK_ASM_UNDERSCORE, | |
1453 | [cat > conftest.$ac_ext <<EOF | |
1454 | dnl This sometimes fails to find confdefs.h, for some reason. | |
85dd1003 UD |
1455 | dnl [#]line $LINENO "[$]0" |
1456 | [#]line $LINENO "configure" | |
9a0a462c UD |
1457 | #include "confdefs.h" |
1458 | void underscore_test(void) { | |
1459 | return; } | |
1460 | EOF | |
1461 | if AC_TRY_EVAL(ac_compile); then | |
1462 | if grep _underscore_test conftest* >/dev/null; then | |
1463 | ifelse([$1], , :, [rm -f conftest* | |
1464 | $1]) | |
1465 | else | |
1466 | ifelse([$2], , , [rm -f conftest* | |
1467 | $2]) | |
1468 | fi | |
1469 | else | |
c2f55635 RM |
1470 | echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD |
1471 | cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD | |
9a0a462c UD |
1472 | ifelse([$2], , , [rm -f conftest* |
1473 | $2]) | |
1474 | fi | |
1475 | rm -f conftest*]) | |
1476 | ||
c224a18a RM |
1477 | if test $elf = yes; then |
1478 | libc_cv_asm_underscores=no | |
1479 | else | |
9a0a462c UD |
1480 | if test $ac_cv_prog_cc_works = yes; then |
1481 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1482 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], | |
1483 | libc_cv_asm_underscores=yes, | |
1484 | libc_cv_asm_underscores=no)]) | |
1485 | else | |
1486 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
1487 | [AC_CHECK_ASM_UNDERSCORE(libc_cv_asm_underscores=yes, | |
1488 | libc_cv_asm_underscores=no)]) | |
1489 | fi | |
c224a18a RM |
1490 | fi |
1491 | if test $libc_cv_asm_underscores = no; then | |
1492 | AC_DEFINE(NO_UNDERSCORES) | |
1493 | fi | |
1494 | ||
1495 | if test $elf = yes; then | |
1496 | libc_cv_weak_symbols=yes | |
9a97d1f7 UD |
1497 | fi |
1498 | ||
1499 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
75d86c1f | 1500 | [dnl |
c224a18a | 1501 | cat > conftest.s <<EOF |
2293395f | 1502 | ${libc_cv_dot_text} |
c224a18a | 1503 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1504 | foo: |
c224a18a RM |
1505 | .weak foo |
1506 | .weak bar; bar = foo | |
1507 | EOF | |
3217788f | 1508 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
9a97d1f7 UD |
1509 | libc_cv_asm_weak_directive=yes |
1510 | else | |
1511 | libc_cv_asm_weak_directive=no | |
1512 | fi | |
1513 | rm -f conftest*]) | |
c224a18a | 1514 | |
c8cf0b14 | 1515 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
1516 | AC_CACHE_CHECK(for assembler .weakext directive, |
1517 | libc_cv_asm_weakext_directive, | |
1518 | [dnl | |
1519 | cat > conftest.s <<EOF | |
2293395f | 1520 | ${libc_cv_dot_text} |
c224a18a | 1521 | ${libc_cv_asm_global_directive} foo |
ae1025be | 1522 | foo: |
f802accb UD |
1523 | .weakext bar foo |
1524 | .weakext baz | |
1525 | ${libc_cv_asm_global_directive} baz | |
9a97d1f7 | 1526 | baz: |
c224a18a | 1527 | EOF |
3217788f | 1528 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then |
c224a18a RM |
1529 | libc_cv_asm_weakext_directive=yes |
1530 | else | |
1531 | libc_cv_asm_weakext_directive=no | |
1532 | fi | |
1533 | rm -f conftest*]) | |
1534 | ||
9a97d1f7 | 1535 | fi # no .weak |
c224a18a | 1536 | |
ffcf9634 | 1537 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 1538 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 1539 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
1540 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
1541 | fi | |
1542 | ||
b15cb495 | 1543 | dnl The standard hppa assembler uses `;' to start comments and `!' |
eacde9d0 UD |
1544 | dnl as a line separator. CRIS uses `;' to start comments and `@' for |
1545 | dnl line separator. | |
b15cb495 | 1546 | case "${host_cpu}-${host_os}" in |
eacde9d0 UD |
1547 | cris*) |
1548 | libc_cv_asm_line_sep='@' | |
1549 | AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) | |
1550 | ;; | |
b15cb495 UD |
1551 | hppa*linux*) |
1552 | AC_CACHE_CHECK(for assembler line separator, | |
1553 | libc_cv_asm_line_sep, [dnl | |
1554 | cat > conftest.s <<EOF | |
1555 | nop ; is_old_puffin | |
1556 | EOF | |
3217788f | 1557 | if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then |
b15cb495 UD |
1558 | libc_cv_asm_line_sep='!' |
1559 | else | |
1560 | if test -z "$enable_hacker_mode"; then | |
1561 | echo "*** You need a newer assembler to compile glibc" | |
1562 | rm -f conftest* | |
1563 | exit 1 | |
1564 | fi | |
1565 | libc_cv_asm_line_sep=';' | |
1566 | fi | |
1567 | rm -f conftest*]) | |
1568 | AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep) | |
1569 | ;; | |
1570 | esac | |
1571 | ||
50189569 AJ |
1572 | AC_CACHE_CHECK(whether CFI directives are supported, libc_cv_asm_cfi_directives, [dnl |
1573 | cat > conftest.s <<EOF | |
1574 | .text | |
1575 | .type func,@function | |
1576 | func: | |
1577 | .cfi_startproc | |
f212e8dc | 1578 | .cfi_remember_state |
fbd90f6c | 1579 | .cfi_rel_offset 1, 0 |
50189569 AJ |
1580 | .cfi_endproc |
1581 | EOF | |
1582 | if AC_TRY_COMMAND(${CC-cc} $ASFLAGS -c conftest.s 1>&AS_MESSAGE_LOG_FD); then | |
1583 | libc_cv_asm_cfi_directives=yes | |
1584 | else | |
1585 | libc_cv_asm_cfi_directives=no | |
1586 | fi | |
1587 | rm -f conftest*]) | |
1588 | if test $libc_cv_asm_cfi_directives = yes; then | |
1589 | AC_DEFINE(HAVE_ASM_CFI_DIRECTIVES) | |
bcd5f356 | 1590 | fi |
50189569 | 1591 | |
073e82bf RM |
1592 | AC_CACHE_CHECK(if -g produces usable source locations for assembler-with-cpp, |
1593 | libc_cv_cpp_asm_debuginfo, [dnl | |
1594 | cat > conftest.S <<EOF | |
1595 | #include "confdefs.h" | |
1596 | ||
1597 | /* comment on | |
1598 | two lines */ | |
1599 | ${libc_cv_dot_text} | |
1600 | ${libc_cv_asm_global_directive} foo | |
1601 | foo: | |
1602 | /* Unfortunately this test only works for a real instruction, | |
1603 | not for any of the machine-independent pseudo-ops. | |
1604 | So we just have to assume everybody has a "nop". */ | |
1605 | nop | |
1606 | /* comment */ | |
1607 | nop | |
1608 | /* comment */ | |
1609 | nop | |
1610 | EOF | |
3217788f | 1611 | if AC_TRY_COMMAND([${CC-cc} $CPPFLAGS $ASFLAGS -g -c conftest.S 1>&AS_MESSAGE_LOG_FD]) && |
073e82bf RM |
1612 | ac_pattern='conftest\.S' |
1613 | AC_TRY_COMMAND([readelf --debug-dump=line conftest.o | | |
1614 | grep $ac_pattern 1>&AS_MESSAGE_LOG_FD]); then | |
1615 | libc_cv_cpp_asm_debuginfo=yes | |
1616 | else | |
1617 | libc_cv_cpp_asm_debuginfo=no | |
1618 | fi | |
1619 | rm -f conftest*])AC_SUBST(libc_cv_cpp_asm_debuginfo) | |
1620 | if test $libc_cv_cpp_asm_debuginfo = yes; then | |
1621 | AC_DEFINE(HAVE_CPP_ASM_DEBUGINFO) | |
1622 | fi | |
1623 | ||
a641835a RM |
1624 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
1625 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 1626 | _start () {} |
dcf0671d UD |
1627 | int __eh_pc; |
1628 | __throw () {} | |
a641835a | 1629 | EOF |
dcea62dd | 1630 | dnl No \ in command here because it ends up inside ''. |
3217788f | 1631 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dcea62dd | 1632 | -nostdlib -nostartfiles -Wl,--no-whole-archive |
c2f55635 | 1633 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
a641835a RM |
1634 | libc_cv_ld_no_whole_archive=yes |
1635 | else | |
1636 | libc_cv_ld_no_whole_archive=no | |
1637 | fi | |
1638 | rm -f conftest*]) | |
b17277cf UD |
1639 | if test $libc_cv_ld_no_whole_archive = yes; then |
1640 | no_whole_archive=-Wl,--no-whole-archive | |
1641 | fi | |
1642 | AC_SUBST(no_whole_archive)dnl | |
a641835a | 1643 | |
dff14448 | 1644 | AC_CACHE_CHECK(for gcc -fexceptions, libc_cv_gcc_exceptions, [dnl |
b236e99d UD |
1645 | cat > conftest.c <<\EOF |
1646 | _start () {} | |
1647 | int __eh_pc; | |
1648 | __throw () {} | |
1649 | EOF | |
1650 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1651 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
dff14448 | 1652 | -nostdlib -nostartfiles -fexceptions |
c2f55635 | 1653 | -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then |
dff14448 | 1654 | libc_cv_gcc_exceptions=yes |
b236e99d | 1655 | else |
dff14448 | 1656 | libc_cv_gcc_exceptions=no |
b236e99d UD |
1657 | fi |
1658 | rm -f conftest*]) | |
dff14448 UD |
1659 | if test $libc_cv_gcc_exceptions = yes; then |
1660 | exceptions=-fexceptions | |
b17277cf | 1661 | fi |
dff14448 | 1662 | AC_SUBST(exceptions)dnl |
b236e99d | 1663 | |
66000494 UD |
1664 | if test "$host_cpu" = powerpc ; then |
1665 | # Check for a bug present in at least versions 2.8.x of GCC | |
1666 | # and versions 1.0.x of EGCS. | |
1667 | AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl | |
1668 | AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],, | |
1669 | libc_cv_c_asmcr0_bug='no', | |
1670 | libc_cv_c_asmcr0_bug='yes')]) | |
1671 | if test "$libc_cv_c_asmcr0_bug" != 'no'; then | |
1672 | AC_DEFINE(BROKEN_PPC_ASM_CR0) | |
1673 | fi | |
1674 | fi | |
1675 | ||
650425ce UD |
1676 | AC_CACHE_CHECK(for DWARF2 unwind info support, libc_cv_gcc_dwarf2_unwind_info, |
1677 | [cat > conftest.c <<EOF | |
85dd1003 | 1678 | #line $LINENO "configure" |
2b904739 | 1679 | static char *__EH_FRAME_BEGIN__; |
650425ce UD |
1680 | _start () |
1681 | { | |
9756dfe1 | 1682 | #ifdef CHECK__register_frame |
650425ce UD |
1683 | __register_frame (__EH_FRAME_BEGIN__); |
1684 | __deregister_frame (__EH_FRAME_BEGIN__); | |
9756dfe1 UD |
1685 | #endif |
1686 | #ifdef CHECK__register_frame_info | |
1687 | __register_frame_info (__EH_FRAME_BEGIN__); | |
1688 | __deregister_frame_info (__EH_FRAME_BEGIN__); | |
1689 | #endif | |
650425ce UD |
1690 | } |
1691 | int __eh_pc; | |
1692 | __throw () {} | |
1693 | /* FIXME: this is fragile. */ | |
1694 | malloc () {} | |
1695 | strcmp () {} | |
1696 | strlen () {} | |
1697 | memcpy () {} | |
1698 | memset () {} | |
1699 | free () {} | |
1700 | abort () {} | |
dfd2257a | 1701 | __bzero () {} |
df17727a | 1702 | dl_iterate_phdr () {} |
650425ce | 1703 | EOF |
3217788f RM |
1704 | libc_unwind_check="${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame_info \ |
1705 | $LDFLAGS \ | |
42607429 RM |
1706 | -nostdlib -nostartfiles -o conftest conftest.c \ |
1707 | -lgcc" | |
1708 | # Some platforms' specs put -lgcc first. The second one doesn't hurt. | |
1709 | if AC_TRY_COMMAND([$libc_unwind_check >&AS_MESSAGE_LOG_FD]) || | |
1710 | AC_TRY_COMMAND([$libc_unwind_check -lgcc_eh -lgcc >&AS_MESSAGE_LOG_FD]) | |
1711 | then | |
cd925327 | 1712 | if $libc_unwind_check -v 2>&1 >/dev/null \ |
5de90b7c | 1713 | | grep -- --eh-frame-hdr 2>&1 >/dev/null; then |
2b904739 AJ |
1714 | libc_cv_gcc_dwarf2_unwind_info=no_registry_needed |
1715 | else | |
1716 | libc_cv_gcc_dwarf2_unwind_info=static | |
1717 | fi | |
1718 | else | |
1719 | libc_cv_gcc_dwarf2_unwind_info=no | |
1720 | fi | |
9756dfe1 | 1721 | if test $libc_cv_gcc_dwarf2_unwind_info = no; then |
3217788f RM |
1722 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -DCHECK__register_frame |
1723 | $LDFLAGS -nostdlib -nostartfiles | |
c2f55635 | 1724 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then |
9756dfe1 UD |
1725 | libc_cv_gcc_dwarf2_unwind_info=yes |
1726 | else | |
1727 | libc_cv_gcc_dwarf2_unwind_info=no | |
1728 | fi | |
1729 | fi | |
650425ce | 1730 | rm -f conftest*]) |
9756dfe1 UD |
1731 | case $libc_cv_gcc_dwarf2_unwind_info in |
1732 | yes) | |
650425ce | 1733 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) |
9756dfe1 UD |
1734 | ;; |
1735 | static) | |
1736 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO) | |
1737 | AC_DEFINE(HAVE_DWARF2_UNWIND_INFO_STATIC) | |
1738 | ;; | |
1739 | esac | |
650425ce | 1740 | |
a8eab8b1 UD |
1741 | dnl Check whether compiler understands __builtin_expect. |
1742 | AC_CACHE_CHECK(for __builtin_expect, libc_cv_gcc_builtin_expect, | |
1743 | [cat > conftest.c <<EOF | |
85dd1003 | 1744 | #line $LINENO "configure" |
a8eab8b1 UD |
1745 | int foo (int a) |
1746 | { | |
1747 | a = __builtin_expect (a, 10); | |
1748 | return a == 10 ? 0 : 1; | |
1749 | } | |
1750 | EOF | |
1751 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1752 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles |
c2f55635 | 1753 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then |
a8eab8b1 UD |
1754 | libc_cv_gcc_builtin_expect=yes |
1755 | else | |
1756 | libc_cv_gcc_builtin_expect=no | |
1757 | fi | |
1758 | rm -f conftest*]) | |
1759 | if test "$libc_cv_gcc_builtin_expect" = yes; then | |
1760 | AC_DEFINE(HAVE_BUILTIN_EXPECT) | |
1761 | fi | |
1762 | ||
d555194c UD |
1763 | AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl |
1764 | cat > conftest.c <<\EOF | |
1765 | void zero (void *x) | |
1766 | { | |
a52d1562 | 1767 | __builtin_memset (x, 0, 1000); |
d555194c UD |
1768 | } |
1769 | EOF | |
1770 | dnl | |
1771 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null]); | |
1772 | then | |
1773 | libc_cv_gcc_builtin_memset=no | |
1774 | else | |
1775 | libc_cv_gcc_builtin_memset=yes | |
1776 | fi | |
1777 | rm -f conftest* ]) | |
1778 | if test "$libc_cv_gcc_builtin_memset" = yes ; then | |
1779 | AC_DEFINE(HAVE_BUILTIN_MEMSET) | |
1780 | fi | |
1781 | ||
85dd1003 UD |
1782 | AC_CACHE_CHECK(for redirection of built-in functions, libc_cv_gcc_builtin_redirection, [dnl |
1783 | cat > conftest.c <<\EOF | |
1784 | extern char *strstr (const char *, const char *) __asm ("my_strstr"); | |
1785 | char *foo (const char *a, const char *b) | |
1786 | { | |
1787 | return __builtin_strstr (a, b); | |
1788 | } | |
1789 | EOF | |
1790 | dnl | |
1791 | if AC_TRY_COMMAND([${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null]); | |
1792 | then | |
1793 | libc_cv_gcc_builtin_redirection=yes | |
1794 | else | |
1795 | libc_cv_gcc_builtin_redirection=no | |
1796 | fi | |
1797 | rm -f conftest* ]) | |
1798 | if test "$libc_cv_gcc_builtin_redirection" = yes ; then | |
1799 | AC_DEFINE(HAVE_BUILTIN_REDIRECTION) | |
1800 | fi | |
1801 | ||
3d558f4e UD |
1802 | dnl Check whether the compiler supports subtraction of local labels. |
1803 | AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels, | |
1804 | [cat > conftest.c <<EOF | |
1805 | changequote(,)dnl | |
85dd1003 | 1806 | #line $LINENO "configure" |
3d558f4e UD |
1807 | int foo (int a) |
1808 | { | |
1809 | static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; | |
1810 | void *p = &&l1 + ar[a]; | |
1811 | goto *p; | |
1812 | l1: | |
1813 | return 1; | |
1814 | l2: | |
1815 | return 2; | |
1816 | } | |
1817 | changequote([,])dnl | |
1818 | EOF | |
1819 | dnl No \ in command here because it ends up inside ''. | |
3217788f | 1820 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles |
c2f55635 | 1821 | -o conftest conftest.c -lgcc >&AS_MESSAGE_LOG_FD]); then |
3d558f4e UD |
1822 | libc_cv_gcc_subtract_local_labels=yes |
1823 | else | |
1824 | libc_cv_gcc_subtract_local_labels=no | |
1825 | fi | |
1826 | rm -f conftest*]) | |
1827 | if test "$libc_cv_gcc_subtract_local_labels" = yes; then | |
1828 | AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS) | |
1829 | fi | |
1830 | ||
739d440d | 1831 | dnl Check whether the compiler supports the __thread keyword. |
5b8f26b4 RM |
1832 | if test "x$use__thread" != xno; then |
1833 | AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread, | |
1834 | [cat > conftest.c <<\EOF | |
fbb18522 RM |
1835 | __thread int a = 42; |
1836 | EOF | |
3217788f | 1837 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&AS_MESSAGE_LOG_FD]); then |
5b8f26b4 RM |
1838 | libc_cv_gcc___thread=yes |
1839 | else | |
1840 | libc_cv_gcc___thread=no | |
1841 | fi | |
1842 | rm -f conftest*]) | |
1843 | if test "$libc_cv_gcc___thread" = yes; then | |
1844 | AC_DEFINE(HAVE___THREAD) | |
1845 | fi | |
739d440d UD |
1846 | else |
1847 | libc_cv_gcc___thread=no | |
1848 | fi | |
739d440d | 1849 | |
9b21e6bc RM |
1850 | if test "$libc_cv_gcc___thread" = yes; then |
1851 | dnl Check whether the compiler supports the tls_model attribute. | |
1852 | AC_CACHE_CHECK([for tls_model attribute], libc_cv_gcc_tls_model_attr, [dnl | |
1853 | cat > conftest.c <<\EOF | |
1854 | extern __thread int a __attribute__((tls_model ("initial-exec"))); | |
1855 | EOF | |
3217788f | 1856 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&AS_MESSAGE_LOG_FD]); then |
9b21e6bc RM |
1857 | libc_cv_gcc_tls_model_attr=yes |
1858 | else | |
1859 | libc_cv_gcc_tls_model_attr=no | |
1860 | fi | |
1861 | rm -f conftest*]) | |
1862 | if test "$libc_cv_gcc_tls_model_attr" = yes; then | |
1863 | AC_DEFINE(HAVE_TLS_MODEL_ATTRIBUTE) | |
1864 | fi | |
1865 | fi | |
739d440d | 1866 | |
c8f3e6db UD |
1867 | dnl Check whether we have the gd library available. |
1868 | AC_MSG_CHECKING(for libgd) | |
6dab8688 UD |
1869 | if test "$with_gd" != "no"; then |
1870 | old_CFLAGS="$CFLAGS" | |
1871 | CFLAGS="$CFLAGS $libgd_include" | |
1872 | old_LDFLAGS="$LDFLAGS" | |
1873 | LDFLAGS="$LDFLAGS $libgd_ldflags" | |
1874 | old_LIBS="$LIBS" | |
1875 | LIBS="$LIBS -lgd -lpng -lz -lm" | |
1876 | AC_TRY_LINK([#include <gd.h>], [gdImagePng (0, 0)], LIBGD=yes, LIBGD=no) | |
1877 | CFLAGS="$old_CFLAGS" | |
1878 | LDFLAGS="$old_LDFLAGS" | |
1879 | LIBS="$old_LIBS" | |
1880 | else | |
1881 | LIBGD=no | |
1882 | fi | |
c8f3e6db UD |
1883 | AC_MSG_RESULT($LIBGD) |
1884 | AC_SUBST(LIBGD) | |
3d558f4e | 1885 | |
8ed1e7d5 GK |
1886 | dnl check for the size of 'long double'. |
1887 | AC_CHECK_SIZEOF(long double, 0) | |
1888 | sizeof_long_double=$ac_cv_sizeof_long_double | |
1889 | AC_SUBST(sizeof_long_double) | |
1890 | ||
c224a18a RM |
1891 | ### End of automated tests. |
1892 | ### Now run sysdeps configure fragments. | |
1893 | ||
cb343854 | 1894 | # They also can set these variables. |
591e1ffb | 1895 | use_ldconfig=no |
cb343854 | 1896 | ldd_rewrite_script=no |
77259608 | 1897 | libc_cv_sysconfdir=$sysconfdir |
74bd2300 | 1898 | libc_cv_gcc_unwind_find_fde=no |
cb343854 | 1899 | |
28f540f4 RM |
1900 | # Iterate over all the sysdep directories we will use, running their |
1901 | # configure fragments, and looking for a uname implementation. | |
1902 | uname= | |
1903 | for dir in $sysnames; do | |
57ba7bb4 UD |
1904 | case $dir in |
1905 | /*) dest=$dir ;; | |
1906 | *) dest=$srcdir/$dir ;; | |
1907 | esac | |
1908 | if test -r $dest/configure; then | |
d1149385 | 1909 | AC_MSG_RESULT(running configure fragment for $dir) |
57ba7bb4 | 1910 | . $dest/configure |
28f540f4 | 1911 | fi |
4ca84cff | 1912 | [ |
28f540f4 | 1913 | if test -z "$uname"; then |
e7f1f046 UD |
1914 | if test -r $dest/uname.c || |
1915 | test -r $dest/uname.S || | |
1916 | { test -r $dest/syscalls.list && | |
1917 | grep '^uname[ ]' $dest/syscalls.list >/dev/null; }; then | |
b86199fb | 1918 | uname=$dir |
4ca84cff | 1919 | fi |
28f540f4 | 1920 | fi |
4ca84cff | 1921 | ]dnl |
28f540f4 RM |
1922 | done |
1923 | ||
74bd2300 UD |
1924 | if test x$libc_cv_gcc_unwind_find_fde = xyes; then |
1925 | AC_DEFINE(EXPORT_UNWIND_FIND_FDE) | |
1926 | fi | |
1927 | AC_SUBST(libc_cv_gcc_unwind_find_fde) | |
1928 | ||
28f540f4 RM |
1929 | # If we will use the generic uname implementation, we must figure out what |
1930 | # it will say by examining the system, and write the results in config-name.h. | |
e7f1f046 | 1931 | if test "$uname" = "sysdeps/generic"; then |
28f540f4 RM |
1932 | |
1933 | changequote(,)dnl | |
1934 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
1935 | changequote([,])dnl | |
1936 | if test $uname_sysname != $config_os; then | |
1937 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
1938 | fi | |
1939 | dnl | |
1940 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
1941 | if test -r /vmunix; then | |
1942 | kernel_id=`strings /vmunix | grep UNIX` | |
1943 | elif test -r /dynix; then | |
1944 | kernel_id=`strings /dynix | grep DYNIX` | |
1945 | else | |
1946 | kernel_id= | |
1947 | fi | |
1948 | ])dnl | |
1949 | ||
b8dc6a10 | 1950 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
3a12e572 | 1951 | LIBC_KERNEL_ID |
28f540f4 RM |
1952 | changequote(,)dnl |
1953 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
1954 | changequote([,])dnl | |
1955 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
1956 | != x$config_release; then | |
1957 | # The configuration release is a substring of the kernel release. | |
1958 | libc_cv_uname_release=$kernel_release | |
1959 | elif test x$config_release != x; then | |
1960 | libc_cv_uname_release=$config_release | |
1961 | elif test x$kernel_release != x; then | |
1962 | libc_cv_uname_release=$kernel_release | |
1963 | else | |
1964 | libc_cv_uname_release=unknown | |
1965 | fi]) | |
28f540f4 RM |
1966 | uname_release="$libc_cv_uname_release" |
1967 | ||
b8dc6a10 | 1968 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
3a12e572 | 1969 | LIBC_KERNEL_ID |
28f540f4 RM |
1970 | changequote(,)dnl |
1971 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
1972 | changequote([,])dnl | |
1973 | if test -n "$kernel_version"; then | |
1974 | libc_cv_uname_version="$kernel_version" | |
1975 | else | |
1976 | libc_cv_uname_version=unknown | |
1977 | fi]) | |
28f540f4 RM |
1978 | uname_version="$libc_cv_uname_version" |
1979 | ||
1980 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
1981 | config_uname=config-name.h:config-name.in | |
1982 | else | |
1983 | # For non-generic uname, we don't need to create config-name.h at all. | |
1984 | config_uname= | |
1985 | fi | |
1986 | ||
a8c01776 RM |
1987 | dnl This is tested by existing code and it's simpler to avoid changing it. |
1988 | AC_DEFINE(USE_IN_LIBIO) | |
96aa2d94 | 1989 | |
a53bad16 UD |
1990 | # Test for old glibc 2.0.x headers so that they can be removed properly |
1991 | # Search only in includedir. | |
1992 | AC_MSG_CHECKING(for old glibc 2.0.x headers) | |
350eb336 | 1993 | if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" |
a53bad16 UD |
1994 | then |
1995 | old_glibc_headers=yes | |
1996 | else | |
1997 | old_glibc_headers=no | |
1998 | fi | |
1999 | AC_MSG_RESULT($old_glibc_headers) | |
2000 | if test ${old_glibc_headers} = yes; then | |
2001 | AC_MSG_WARN(*** During \"make install\" old headers from glibc 2.0.x will) | |
2002 | AC_MSG_WARN(*** be removed.) | |
2003 | fi | |
b195f6bc | 2004 | AC_SUBST(old_glibc_headers) |
26b4d766 | 2005 | |
84384f5b | 2006 | AC_SUBST(libc_cv_slibdir) |
a1d84548 | 2007 | AC_SUBST(libc_cv_localedir) |
77259608 | 2008 | AC_SUBST(libc_cv_sysconfdir) |
1ef32c3d | 2009 | AC_SUBST(libc_cv_rootsbindir) |
bcd5f356 | 2010 | AC_SUBST(libc_cv_forced_unwind) |
1ef32c3d | 2011 | |
591e1ffb | 2012 | AC_SUBST(use_ldconfig) |
cb343854 | 2013 | AC_SUBST(ldd_rewrite_script) |
84384f5b | 2014 | |
5af3245a | 2015 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) AC_SUBST(xcoff) |
28f540f4 RM |
2016 | if test $gnu_ld = yes; then |
2017 | AC_DEFINE(HAVE_GNU_LD) | |
2018 | fi | |
2019 | if test $gnu_as = yes; then | |
2020 | AC_DEFINE(HAVE_GNU_AS) | |
2021 | fi | |
2022 | if test $elf = yes; then | |
2023 | AC_DEFINE(HAVE_ELF) | |
2024 | fi | |
5af3245a UD |
2025 | if test $xcoff = yes; then |
2026 | AC_DEFINE(HAVE_XCOFF) | |
2027 | fi | |
28f540f4 | 2028 | |
650425ce | 2029 | AC_SUBST(static) |
ff3d7ed3 RM |
2030 | AC_SUBST(shared) |
2031 | if test $shared = default; then | |
2032 | if test $gnu_ld = yes; then | |
2033 | shared=$elf | |
f65fd747 UD |
2034 | else |
2035 | # For now we do not assume shared libs are available. In future more | |
2036 | # tests might become available. | |
2037 | shared=no | |
ff3d7ed3 RM |
2038 | fi |
2039 | fi | |
cc3fa755 UD |
2040 | |
2041 | AC_CACHE_CHECK([whether -fPIC is default], pic_default, | |
2042 | [pic_default=yes | |
2043 | cat > conftest.c <<EOF | |
9756dfe1 | 2044 | #if defined __PIC__ || defined __pic__ || defined PIC || defined pic |
cc3fa755 UD |
2045 | # error PIC is default. |
2046 | #endif | |
2047 | EOF | |
0b4ee387 | 2048 | if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then |
cc3fa755 UD |
2049 | pic_default=no |
2050 | fi | |
2051 | rm -f conftest.*]) | |
2052 | AC_SUBST(pic_default) | |
2053 | ||
ff3d7ed3 RM |
2054 | AC_SUBST(profile) |
2055 | AC_SUBST(omitfp) | |
5a97622d | 2056 | AC_SUBST(bounded) |
5107cf1d | 2057 | AC_SUBST(static_nss) |
5ae3e846 | 2058 | AC_SUBST(nopic_initfini) |
ff3d7ed3 | 2059 | |
edf5b2d7 UD |
2060 | AC_SUBST(DEFINES) |
2061 | ||
7cabd57c UD |
2062 | case "$add_ons" in |
2063 | *door*) linux_doors=yes ;; | |
2064 | *) linux_doors=no ;; | |
2065 | esac | |
2066 | AC_SUBST(linux_doors) | |
2067 | ||
61c83c3f RM |
2068 | dnl See sysdeps/mach/configure.in for this variable. |
2069 | AC_SUBST(mach_interface_list) | |
2070 | ||
28f540f4 RM |
2071 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
2072 | config_makefile= | |
2073 | else | |
2074 | config_makefile=Makefile | |
2075 | fi | |
2076 | ||
ee74a442 UD |
2077 | VERSION=`sed -n -e 's/^#define VERSION "\([^"]*\)"/\1/p' < $srcdir/version.h` |
2078 | RELEASE=`sed -n -e 's/^#define RELEASE "\([^"]*\)"/\1/p' < $srcdir/version.h` | |
df4ef2ab | 2079 | AC_SUBST(VERSION) |
ee74a442 | 2080 | AC_SUBST(RELEASE) |
df4ef2ab | 2081 | |
c118d634 RM |
2082 | AC_CONFIG_FILES([config.make glibcbug ${config_makefile} ${config_uname}]) |
2083 | AC_CONFIG_COMMANDS([default],[[ | |
737547be UD |
2084 | case $CONFIG_FILES in *config.make*) |
2085 | echo "$config_vars" >> config.make;; | |
2086 | esac | |
c118d634 RM |
2087 | test -d bits || mkdir bits]],[[config_vars='$config_vars']]) |
2088 | AC_OUTPUT |