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Commit | Line | Data |
---|---|---|
d586354e | 1 | Dnl Process this file with autoconf to produce a configure script. |
ff3d7ed3 | 2 | AC_REVISION([$CVSid$]) |
8a523922 | 3 | AC_PREREQ(2.11)dnl dnl Minimum Autoconf version required. |
28f540f4 RM |
4 | AC_INIT(features.h) |
5 | AC_CONFIG_HEADER(config.h) | |
6 | ||
7 | # This will get text that should go into config.make. | |
8 | config_vars= | |
9 | ||
10 | # Check for a --with-gmp argument and set gmp-srcdir in config.make. | |
11 | AC_ARG_WITH(gmp, dnl | |
12 | --with-gmp=DIRECTORY find GMP source code in DIRECTORY (not needed), | |
13 | [dnl | |
14 | case "$with_gmp" in | |
15 | yes) AC_MSG_ERROR(--with-gmp requires an argument; use --with-gmp=DIRECTORY) ;; | |
16 | ''|no) ;; | |
17 | *) config_vars="$config_vars | |
18 | gmp-srcdir = $withval" ;; | |
19 | esac | |
20 | ]) | |
75914335 RM |
21 | # Check for a --with-gettext argument and set gettext-srcdir in config.make. |
22 | AC_ARG_WITH(gettext, dnl | |
23 | --with-gettext=DIR find GNU gettext source code in DIR (not needed), | |
24 | [dnl | |
25 | case "$with_gettext" in | |
26 | yes) | |
27 | AC_MSG_ERROR(--with-gettext requires an argument; use --with-gettext=DIR) ;; | |
28 | ''|no) ;; | |
29 | *) | |
30 | config_vars="$config_vars | |
31 | gettext-srcdir = $withval" ;; | |
32 | esac | |
33 | ]) | |
28f540f4 | 34 | |
ff3d7ed3 | 35 | dnl Arguments to specify presence of other packages/features. |
335aa320 | 36 | AC_ARG_WITH(fp, dnl |
a18f587d | 37 | [ --with-fp if using floating-point hardware [default=yes]], |
335aa320 | 38 | with_fp=$withval, with_fp=yes) |
28f540f4 RM |
39 | AC_ARG_WITH(gnu-binutils, dnl |
40 | --with-gnu-binutils if using GNU binutils (as and ld), | |
335aa320 | 41 | gnu_binutils=$withval, gnu_binutils=no) |
28f540f4 RM |
42 | AC_ARG_WITH(gnu-ld, dnl |
43 | --with-gnu-ld if using GNU ld (in the binutils package), | |
335aa320 | 44 | gnu_ld=$withval, gnu_ld=no) |
28f540f4 RM |
45 | AC_ARG_WITH(gnu-as, dnl |
46 | --with-gnu-as if using GNU as (in the binutils package), | |
335aa320 | 47 | gnu_as=$withval, gnu_as=no) |
28f540f4 RM |
48 | test $gnu_binutils = yes && gnu_as=yes gnu_ld=yes |
49 | AC_ARG_WITH(elf, dnl | |
50 | --with-elf if using the ELF object format, | |
335aa320 | 51 | elf=$withval, elf=no) |
28f540f4 | 52 | |
deab9dea RM |
53 | AC_ARG_ENABLE(libio, dnl |
54 | [ --enable-libio build in GNU libio instead of GNU stdio], | |
f4482045 RM |
55 | [if test $enableval = yes; then |
56 | stdio=libio | |
57 | else | |
58 | stdio=stdio | |
59 | fi], | |
60 | stdio=default) | |
deab9dea | 61 | |
a18f587d UD |
62 | AC_ARG_ENABLE(sanity-checks, dnl |
63 | [ --disable-sanity-checks really do not use threads (should not be used | |
64 | except in special situations) [default=yes]], | |
65 | enable_sanity=$enableval, enable_sanity=yes) | |
66 | ||
ff3d7ed3 RM |
67 | dnl Arguments to enable or disable building the shared, profiled, and |
68 | dnl -fomit-frame-pointer libraries. | |
69 | AC_ARG_ENABLE(shared, dnl | |
70 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
6b3a2224 | 71 | shared=$enableval, shared=default) |
ff3d7ed3 RM |
72 | AC_ARG_ENABLE(profile, dnl |
73 | [ --enable-profile build profiled library [default=yes]], | |
6b3a2224 | 74 | profile=$enableval, profile=yes) |
ff3d7ed3 | 75 | AC_ARG_ENABLE(omitfp, dnl |
6b3a2224 RM |
76 | [ --enable-omitfp build undebuggable optimized library [default=no]], |
77 | omitfp=$enableval, omitfp=no) | |
5a97622d UD |
78 | AC_ARG_ENABLE(bounded, dnl |
79 | [ --enable-bounded build with runtime bounds checking [default=no]], | |
80 | bounded=$enableval, bounded=no) | |
6b3a2224 RM |
81 | |
82 | dnl Generic infrastructure for drop-in additions to libc. | |
83 | AC_ARG_ENABLE(add-ons, dnl | |
84 | [ --enable-add-ons=DIR... configure and build named extra directories], | |
e75154a6 RM |
85 | [add_ons=`echo "$enableval" | sed 's/,/ /g'`], |
86 | [add_ons=]) | |
6b3a2224 | 87 | AC_CONFIG_SUBDIRS($add_ons) |
57ba7bb4 | 88 | add_ons_pfx= |
da74e902 | 89 | if test x"$add_ons" != x; then |
57ba7bb4 UD |
90 | for f in $add_ons; do |
91 | add_ons_pfx="$add_ons_pfx $f/" | |
92 | done | |
93 | fi | |
ff3d7ed3 | 94 | |
28f540f4 | 95 | AC_CANONICAL_HOST |
8a523922 UD |
96 | |
97 | # The way shlib-versions is used to generate soversions.mk uses a | |
98 | # fairly simplistic model for name recognition that can't distinguish | |
99 | # i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os | |
100 | # of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can | |
101 | # tell. This doesn't get used much beyond that, so it's fairly safe. | |
102 | case "$host_os" in | |
103 | linux*) | |
104 | ;; | |
105 | gnu*) | |
106 | host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'` | |
107 | ;; | |
108 | esac | |
109 | ||
28f540f4 RM |
110 | # We keep the original values in `$config_*' and never modify them, so we |
111 | # can write them unchanged into config.make. Everything else uses | |
112 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
113 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
114 | ||
a2fe9c76 RM |
115 | # Some configurations imply other options. |
116 | case "$host_os" in | |
117 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
118 | # These systems always use GNU tools. | |
c8cf0b14 | 119 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
120 | esac |
121 | case "$host_os" in | |
7799b7b3 UD |
122 | # i586-linuxaout is mangled into i586-pc-linux-gnuaout |
123 | linux*ecoff* | linux*aout* | gnu*aout* | gnu*ecoff*) | |
3776d592 | 124 | ;; |
a2fe9c76 | 125 | gnu* | linux* | sysv4* | solaris2*) |
3776d592 RM |
126 | # These systems (almost) always use the ELF format. |
127 | elf=yes | |
84724245 | 128 | ;; |
a2fe9c76 RM |
129 | esac |
130 | ||
28f540f4 RM |
131 | machine=$config_machine |
132 | vendor=$config_vendor | |
133 | os=$config_os | |
134 | ||
135 | dnl We need to use [ and ] for other purposes for a while now. | |
136 | changequote(,)dnl | |
137 | # Expand the configuration machine name into a subdirectory by architecture | |
138 | # type and particular chip. | |
139 | case "$machine" in | |
f0523145 RM |
140 | a29k | am29000) base_machine=a29k machine=a29k ;; |
141 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
7799b7b3 | 142 | arm*) base_machine=arm machine=arm/$machine ;; |
f0523145 | 143 | hppa*) base_machine=hppa machine=hppa/$machine ;; |
a8922de8 | 144 | i[3456]86) base_machine=i386 machine=i386/$machine ;; |
f0523145 RM |
145 | m680?0) base_machine=m68k machine=m68k/$machine ;; |
146 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
147 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
148 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
149 | mips*) base_machine=mips machine=mips/$machine ;; | |
150 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; | |
151 | sparc[6789]) base_machine=sparc machine=sparc/$machine ;; | |
152 | supersparc) base_machine=sparc machine=sparc/sparc8 ;; | |
28f540f4 | 153 | esac |
f0523145 RM |
154 | changequote([,])dnl |
155 | AC_SUBST(base_machine) | |
28f540f4 | 156 | |
f0523145 | 157 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 158 | # This can take a while to compute. |
f0523145 | 159 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 160 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
161 | dnl We need to use [ and ] for other purposes for a while now. |
162 | changequote(,)dnl | |
28f540f4 RM |
163 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
164 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
165 | ||
166 | case "$os" in | |
167 | gnu*) | |
168 | base_os=mach/hurd ;; | |
883bc19b | 169 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 170 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 171 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 172 | base_os=unix/bsd ;; |
d586354e | 173 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 174 | base_os=unix/sysv ;; |
d586354e | 175 | solaris[2-9]*) |
28f540f4 RM |
176 | base_os=unix/sysv/sysv4 ;; |
177 | none) | |
178 | base_os=standalone ;; | |
179 | *) | |
180 | base_os='' ;; | |
181 | esac | |
182 | ||
183 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
184 | tail=$os | |
185 | ostry=$os | |
186 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
187 | ostry="$ostry /$o" | |
188 | tail=$o | |
75914335 | 189 | done |
28f540f4 RM |
190 | o=`echo $tail | sed 's/[0-9]*$//'` |
191 | if test $o != $tail; then | |
192 | ostry="$ostry /$o" | |
193 | fi | |
ec4b0518 UD |
194 | # For linux-gnu, try linux-gnu, then linux. |
195 | o=`echo $tail | sed 's/-.*$//'` | |
196 | if test $o != $tail; then | |
197 | ostry="$ostry /$o" | |
198 | fi | |
28f540f4 RM |
199 | |
200 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
201 | base= | |
202 | tail=$base_os | |
203 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
204 | set $b | |
205 | base="$base /$1" | |
206 | tail="$2" | |
207 | done | |
208 | ||
209 | # For sparc/sparc9, try sparc/sparc9 and then sparc. | |
210 | mach= | |
211 | tail=$machine | |
212 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
213 | set $m | |
10ceac89 RM |
214 | # Prepend the machine's FPU directory unless --without-fp. |
215 | if test "$with_fp" = yes; then | |
216 | mach="$mach /$1/fpu" | |
82d00cab | 217 | fi |
28f540f4 RM |
218 | mach="$mach /$1" |
219 | tail="$2" | |
220 | done | |
221 | ||
222 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
223 | changequote([,])dnl | |
224 | ||
225 | # Find what sysdep directories exist. | |
226 | sysnames= | |
57ba7bb4 UD |
227 | IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" |
228 | for d in $add_ons_pfx ''; do | |
229 | for b in $base ''; do | |
230 | for m0 in $mach ''; do | |
231 | for v in /$vendor ''; do | |
232 | for o in /$ostry ''; do | |
233 | for m in $mach ''; do | |
234 | if test "$m0$b$v$o$m"; then | |
235 | try="${d}sysdeps$m0$b$v$o$m" | |
236 | test -n "$enable_debug_configure" && | |
237 | echo "$0 [DEBUG]: try $try" >&2 | |
238 | case $try in | |
239 | /*) dest=$try ;; | |
240 | *) dest=$srcdir/$try ;; | |
241 | esac | |
242 | if test -d $dest; then | |
243 | sysnames="$sysnames $try" | |
244 | { test -n "$o" || test -n "$b"; } && os_used=t | |
245 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
246 | fi | |
247 | fi | |
248 | done | |
28f540f4 RM |
249 | done |
250 | done | |
251 | done | |
252 | done | |
253 | done | |
57ba7bb4 | 254 | IFS="$ac_save_ifs" |
28f540f4 RM |
255 | |
256 | if test -z "$os_used" && test "$os" != none; then | |
257 | AC_MSG_ERROR(Operating system $os is not supported.) | |
258 | fi | |
259 | if test -z "$machine_used" && test "$machine" != none; then | |
260 | AC_MSG_ERROR(The $machine is not supported.) | |
261 | fi | |
262 | ||
263 | # We have now validated the configuration. | |
264 | ||
335aa320 | 265 | |
10ceac89 RM |
266 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
267 | # We prepend these rather than inserting them whereever the machine appears | |
268 | # because things specified by the machine's ELF ABI should override | |
269 | # OS-specific things, and should always be the same for any OS on the | |
270 | # machine (otherwise what's the point of an ABI?). | |
271 | if test "$elf" = yes; then | |
272 | elf_dirs= | |
57ba7bb4 UD |
273 | for d in $add_ons_pfx ''; do |
274 | case $d in | |
275 | /*) xsrcdir= ;; | |
276 | *) xsrcdir=$srcdir/ ;; | |
277 | esac | |
278 | for m in $mach; do | |
279 | if test -d $xsrcdir${d}sysdeps$m/elf; then | |
c2bb8cab | 280 | elf_dirs="$elf_dirs ${d}sysdeps$m/elf" |
57ba7bb4 UD |
281 | fi |
282 | done | |
28f540f4 | 283 | done |
57ba7bb4 | 284 | sysnames="`echo $elf_dirs | sed -e 's,//,/,g'` $sysnames" |
28f540f4 RM |
285 | fi |
286 | ||
335aa320 | 287 | |
28f540f4 RM |
288 | # Expand the list of system names into a full list of directories |
289 | # from each element's parent name and Implies file (if present). | |
290 | set $sysnames | |
e50ec9f9 | 291 | names= |
28f540f4 RM |
292 | while test $# -gt 0; do |
293 | name=$1 | |
294 | shift | |
295 | ||
e50ec9f9 | 296 | case " $names " in *" $name "*) |
f332db02 RM |
297 | # Already in the list. |
298 | continue | |
e50ec9f9 | 299 | esac |
f332db02 RM |
300 | |
301 | # Report each name as we discover it, so there is no long pause in output. | |
302 | echo $ac_n "$name $ac_c" >&AC_FD_MSG | |
303 | ||
57ba7bb4 UD |
304 | name_base=`echo $name | sed -e 's@\(.*sysdeps\)/.*@\1@'` |
305 | ||
306 | case $name in | |
307 | /*) xsrcdir= ;; | |
308 | *) xsrcdir=$srcdir/ ;; | |
309 | esac | |
310 | test -n "$enable_debug_configure" && | |
311 | echo "[DEBUG]: name/Implies $xsrcdir$name/Implies" >&2 | |
312 | ||
313 | if test -f $xsrcdir$name/Implies; then | |
28f540f4 | 314 | # Collect more names from the `Implies' file (removing comments). |
57ba7bb4 UD |
315 | implied_candidate="`sed 's/#.*$//' < $xsrcdir$name/Implies`" |
316 | implied= | |
317 | for x in $implied_candidate; do | |
318 | if test -d $xsrcdir$name_base/$x; then | |
319 | implied="$implied $name_base/$x"; | |
320 | else | |
321 | AC_MSG_WARN($name/Implies specifies nonexistent $x) | |
322 | fi | |
28f540f4 RM |
323 | done |
324 | else | |
325 | implied= | |
326 | fi | |
327 | ||
328 | # Add NAME to the list of names. | |
329 | names="$names $name" | |
330 | ||
331 | # Find the parent of NAME, using the empty string if it has none. | |
332 | changequote(,)dnl | |
57ba7bb4 | 333 | parent="`echo $name | sed -n -e 's=/[^/]*$==' -e '/sysdeps$/q' -e p`" |
28f540f4 RM |
334 | changequote([,])dnl |
335 | ||
336 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
337 | # the list of names to be processed (the argument list). We prepend the | |
338 | # implied names to the list and append the parent. We want implied | |
339 | # directories to come before further directories inferred from the | |
340 | # configuration components; this ensures that for sysv4, unix/common | |
341 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
342 | # after sysv4). | |
343 | sysnames="`echo $implied $* $parent`" | |
344 | test -n "$sysnames" && set $sysnames | |
345 | done | |
346 | ||
347 | # Add the default directories. | |
57ba7bb4 | 348 | sysnames="$names sysdeps/generic sysdeps/stub" |
f332db02 RM |
349 | AC_SUBST(sysnames) |
350 | # The other names were emitted during the scan. | |
57ba7bb4 | 351 | AC_MSG_RESULT(sysdeps/generic sysdeps/stub) |
28f540f4 | 352 | |
f332db02 RM |
353 | |
354 | ### Locate tools. | |
28f540f4 | 355 | |
28f540f4 | 356 | AC_PROG_INSTALL |
26761c28 | 357 | if test "$INSTALL" = "${srcdir}/install-sh -c"; then |
28f540f4 | 358 | # The makefiles need to use a different form to find it in $srcdir. |
8a523922 | 359 | INSTALL='$(..)./install-sh -c' |
28f540f4 | 360 | fi |
0e3426bb | 361 | AC_PROG_LN_S |
c17097f1 | 362 | AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :) |
28f540f4 | 363 | |
3e5f5557 | 364 | AC_PROG_CC |
22d57dd3 | 365 | AC_CANONICAL_BUILD |
072ebcef | 366 | if test $host != $build; then |
22d57dd3 | 367 | AC_CHECK_PROGS(BUILD_CC, gcc cc) |
072ebcef | 368 | fi |
779ae82e | 369 | AC_SUBST(cross_compiling) |
7c713e28 | 370 | AC_PROG_CPP |
ff3d7ed3 RM |
371 | AC_CHECK_TOOL(AR, ar) |
372 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
28f540f4 | 373 | |
84384f5b | 374 | AC_PATH_PROG(BASH, bash, no) |
a18f587d UD |
375 | if test "$BASH" != no && |
376 | $BASH -c 'test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then | |
84384f5b UD |
377 | libc_cv_have_bash2=yes |
378 | else | |
379 | libc_cv_have_bash2=no | |
380 | fi | |
381 | AC_SUBST(libc_cv_have_bash2) | |
382 | ||
5290baf0 UD |
383 | dnl We need a ksh compatible shell for tzselect. |
384 | if test "$BASH" = no; then | |
385 | AC_PATH_PROG(KSH, ksh, no) | |
386 | if test "$KSH" = no; then | |
387 | libc_cv_have_ksh=no | |
388 | else | |
389 | libc_cv_have_ksh=yes | |
390 | fi | |
391 | else | |
392 | KSH="$BASH" | |
393 | AC_SUBST(KSH) | |
394 | libc_cv_have_ksh=yes | |
395 | fi | |
396 | AC_SUBST(libc_cv_have_ksh) | |
397 | ||
b8dc6a10 | 398 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
399 | echo '#include <stddef.h> |
400 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
401 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
402 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
403 | libc_cv_signed_size_t=no | |
404 | else | |
405 | libc_cv_signed_size_t=yes | |
406 | fi | |
407 | rm -f conftest*]) | |
28f540f4 RM |
408 | if test $libc_cv_signed_size_t = yes; then |
409 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
410 | cat >> confdefs.h <<\EOF | |
411 | #undef __SIZE_TYPE__ | |
412 | #define __SIZE_TYPE__ unsigned | |
413 | EOF | |
414 | fi | |
415 | ||
b8dc6a10 | 416 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
417 | AC_TRY_COMPILE(dnl |
418 | [#define __need_size_t | |
419 | #define __need_wchar_t | |
420 | #include <stddef.h> | |
421 | #define __need_NULL | |
422 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
423 | #ifdef offsetof | |
424 | #error stddef.h ignored __need_* | |
425 | #endif | |
426 | if (&size == NULL || &wchar == NULL) abort ();], | |
427 | libc_cv_friendly_stddef=yes, | |
428 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
429 | if test $libc_cv_friendly_stddef = yes; then |
430 | config_vars="$config_vars | |
431 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
432 | fi | |
433 | ||
b8dc6a10 RM |
434 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
435 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
436 | cat > conftest.S <<EOF |
437 | #include "confdefs.h" | |
438 | /* Nothing whatsoever. */ | |
439 | EOF | |
440 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
441 | libc_cv_need_minus_P=no | |
442 | else | |
443 | libc_cv_need_minus_P=yes | |
444 | fi | |
445 | rm -f conftest*]) | |
28f540f4 RM |
446 | if test $libc_cv_need_minus_P = yes; then |
447 | config_vars="$config_vars | |
448 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
449 | fi | |
450 | ||
b8dc6a10 RM |
451 | AC_CACHE_CHECK(for assembler global-symbol directive, |
452 | libc_cv_asm_global_directive, [dnl | |
9a70fcab UD |
453 | libc_cv_asm_global_directive=UNKNOWN |
454 | for ac_globl in .globl .global; do | |
455 | cat > conftest.s <<EOF | |
456 | .text | |
457 | ${ac_globl} foo | |
458 | foo: .long 0 | |
459 | EOF | |
460 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
461 | libc_cv_asm_global_directive=${ac_globl} | |
462 | fi | |
463 | rm -f conftest* | |
464 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
465 | done]) | |
9a70fcab UD |
466 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
467 | AC_MSG_ERROR(cannot determine asm global directive) | |
468 | else | |
469 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
470 | fi | |
471 | ||
b8dc6a10 | 472 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 473 | cat > conftest.s <<EOF |
e215c478 RM |
474 | .text |
475 | foo: .long 0 | |
df2a0c93 | 476 | .set glibc_conftest_frobozz,foo |
9a70fcab | 477 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 478 | EOF |
df2a0c93 RM |
479 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
480 | # (but it doesn't work), so we must do a linking check to be sure. | |
481 | cat > conftest1.c <<\EOF | |
482 | extern int glibc_conftest_frobozz; | |
483 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
484 | EOF | |
485 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
cb2f05ed | 486 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
e215c478 RM |
487 | libc_cv_asm_set_directive=yes |
488 | else | |
489 | libc_cv_asm_set_directive=no | |
490 | fi | |
65b3cbcb | 491 | rm -f conftest*]) |
e215c478 RM |
492 | if test $libc_cv_asm_set_directive = yes; then |
493 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
494 | fi | |
495 | ||
377a515b UD |
496 | AC_CACHE_CHECK(for .symver assembler directive, libc_cv_asm_symver_directive, |
497 | [cat > conftest.s <<EOF | |
498 | .text | |
4cca6b86 | 499 | _sym: |
377a515b UD |
500 | .symver _sym,sym@VERS |
501 | EOF | |
502 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
503 | libc_cv_asm_symver_directive=yes | |
504 | else | |
505 | libc_cv_asm_symver_directive=no | |
506 | fi | |
507 | rm -f conftest*]) | |
508 | AC_CACHE_CHECK(for ld --version-script, libc_cv_ld_version_script_option, [dnl | |
509 | if test $libc_cv_asm_symver_directive = yes; then | |
510 | cat > conftest.s <<EOF | |
511 | .text | |
4cca6b86 | 512 | _sym: |
377a515b UD |
513 | .symver _sym,sym@VERS |
514 | EOF | |
515 | cat > conftest.map <<EOF | |
516 | VERS { | |
517 | global: sym; | |
518 | }; | |
519 | EOF | |
520 | if ${CC-cc} -c $CFLAGS $CPPFLAGS conftest.s 1>&AC_FD_CC 2>&AC_FD_CC; then | |
521 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS --shared -o conftest.so conftest.o | |
522 | -Wl,--version-script,conftest.map]); | |
523 | then | |
524 | libc_cv_ld_version_script_option=yes | |
525 | else | |
526 | libc_cv_ld_version_script_option=no | |
527 | fi | |
528 | else | |
529 | libc_cv_ld_version_script_option=no | |
530 | fi | |
531 | else | |
532 | libc_cv_ld_version_script_option=no | |
533 | fi | |
534 | rm -f conftest*]) | |
535 | if test $libc_cv_asm_symver_directive = yes && | |
536 | test $libc_cv_ld_version_script_option = yes; then | |
537 | VERSIONING=yes | |
538 | AC_DEFINE(DO_VERSIONING) | |
539 | else | |
540 | VERSIONING=no | |
541 | fi | |
542 | AC_SUBST(VERSIONING) | |
543 | ||
fd26970f UD |
544 | if test $elf = yes; then |
545 | AC_CACHE_CHECK(for .previous assembler directive, | |
546 | libc_cv_asm_previous_directive, [dnl | |
547 | cat > conftest.s <<EOF | |
548 | .section foo_section | |
549 | .previous | |
550 | EOF | |
551 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
552 | libc_cv_asm_previous_directive=yes | |
553 | else | |
554 | libc_cv_asm_previous_directive=no | |
555 | fi | |
556 | rm -f conftest*]) | |
557 | if test $libc_cv_asm_previous_directive = yes; then | |
558 | AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE) | |
559 | else | |
560 | AC_CACHE_CHECK(for .popsection assembler directive, | |
561 | libc_cv_asm_popsection_directive, [dnl | |
562 | cat > conftest.s <<EOF | |
563 | .pushsection foo_section | |
564 | .popsection | |
565 | EOF | |
566 | if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then | |
567 | libc_cv_asm_popsection_directive=yes | |
568 | else | |
569 | libc_cv_asm_popsection_directive=no | |
570 | fi | |
571 | rm -f conftest*]) | |
572 | if test $libc_cv_asm_popsection_directive = yes; then | |
573 | AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE) | |
574 | fi | |
575 | fi | |
576 | fi | |
577 | ||
b8dc6a10 RM |
578 | if test $elf != yes; then |
579 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
580 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 RM |
581 | asm (".section .fini"); |
582 | asm (".text");], | |
b8dc6a10 RM |
583 | libc_cv_have_initfini=yes, |
584 | libc_cv_have_initfini=no)]) | |
585 | AC_SUBST(libc_cv_have_initfini)dnl | |
586 | if test $libc_cv_have_initfini = yes; then | |
587 | AC_DEFINE(HAVE_INITFINI) | |
588 | fi | |
589 | fi | |
e215c478 | 590 | |
c224a18a RM |
591 | if test $elf = yes; then |
592 | libc_cv_asm_underscores=no | |
593 | else | |
594 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
857fa1b8 RM |
595 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], |
596 | libc_cv_asm_underscores=yes, | |
597 | libc_cv_asm_underscores=no)]) | |
c224a18a RM |
598 | fi |
599 | if test $libc_cv_asm_underscores = no; then | |
600 | AC_DEFINE(NO_UNDERSCORES) | |
601 | fi | |
602 | ||
603 | if test $elf = yes; then | |
604 | libc_cv_weak_symbols=yes | |
605 | libc_cv_asm_weak_directive=yes | |
606 | libc_cv_asm_weakext_directive=no | |
607 | else | |
608 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
609 | [dnl | |
610 | cat > conftest.s <<EOF | |
611 | .text | |
612 | ${libc_cv_asm_global_directive} foo | |
613 | foo: .long 0 | |
614 | .weak foo | |
615 | .weak bar; bar = foo | |
616 | EOF | |
617 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
618 | libc_cv_asm_weak_directive=yes | |
619 | else | |
620 | libc_cv_asm_weak_directive=no | |
621 | fi | |
622 | rm -f conftest*]) | |
623 | ||
c8cf0b14 | 624 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
625 | AC_CACHE_CHECK(for assembler .weakext directive, |
626 | libc_cv_asm_weakext_directive, | |
627 | [dnl | |
628 | cat > conftest.s <<EOF | |
629 | .text | |
630 | ${libc_cv_asm_global_directive} foo | |
631 | foo: .long 0 | |
632 | .weakext foo | |
a1470b6f | 633 | .weakext foo, bar |
c224a18a RM |
634 | EOF |
635 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
636 | libc_cv_asm_weakext_directive=yes | |
637 | else | |
638 | libc_cv_asm_weakext_directive=no | |
639 | fi | |
640 | rm -f conftest*]) | |
641 | ||
642 | fi # no .weak | |
643 | fi # not ELF | |
644 | ||
ffcf9634 | 645 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 646 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 647 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
648 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
649 | fi | |
650 | ||
a641835a RM |
651 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
652 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 653 | _start () {} |
dcf0671d UD |
654 | int __eh_pc; |
655 | __throw () {} | |
a641835a | 656 | EOF |
dcea62dd RM |
657 | dnl No \ in command here because it ends up inside ''. |
658 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
659 | -nostdlib -nostartfiles -Wl,--no-whole-archive | |
5f0e6fc7 | 660 | -o conftest conftest.c]); then |
a641835a RM |
661 | libc_cv_ld_no_whole_archive=yes |
662 | else | |
663 | libc_cv_ld_no_whole_archive=no | |
664 | fi | |
665 | rm -f conftest*]) | |
666 | AC_SUBST(libc_cv_ld_no_whole_archive)dnl | |
667 | ||
b236e99d UD |
668 | AC_CACHE_CHECK(for gcc -fno-exceptions, libc_cv_gcc_no_exceptions, [dnl |
669 | cat > conftest.c <<\EOF | |
670 | _start () {} | |
671 | int __eh_pc; | |
672 | __throw () {} | |
673 | EOF | |
674 | dnl No \ in command here because it ends up inside ''. | |
675 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
676 | -nostdlib -nostartfiles -fno-exceptions | |
677 | -o conftest conftest.c]); then | |
678 | libc_cv_gcc_no_exceptions=yes | |
679 | else | |
680 | libc_cv_gcc_no_exceptions=no | |
681 | fi | |
682 | rm -f conftest*]) | |
683 | AC_SUBST(libc_cv_gcc_no_exceptions)dnl | |
684 | ||
c224a18a RM |
685 | ### End of automated tests. |
686 | ### Now run sysdeps configure fragments. | |
687 | ||
28f540f4 RM |
688 | # sysdeps configure fragments may set these with files to be linked below. |
689 | libc_link_dests= | |
690 | libc_link_sources= | |
691 | ||
692 | # Iterate over all the sysdep directories we will use, running their | |
693 | # configure fragments, and looking for a uname implementation. | |
694 | uname= | |
695 | for dir in $sysnames; do | |
57ba7bb4 UD |
696 | case $dir in |
697 | /*) dest=$dir ;; | |
698 | *) dest=$srcdir/$dir ;; | |
699 | esac | |
700 | if test -r $dest/configure; then | |
701 | AC_MSG_RESULT(running configure fragment for $dest) | |
702 | . $dest/configure | |
28f540f4 | 703 | fi |
4ca84cff | 704 | [ |
28f540f4 | 705 | if test -z "$uname"; then |
b86199fb RM |
706 | if test -r $sysdep_dir/$dir/uname.c || |
707 | test -r $sysdep_dir/$dir/uname.S || | |
708 | { test -r $sysdep_dir/$dir/syscalls.list && | |
709 | grep '^uname[ ]' $sysdep_dir/$dir/syscalls.list >/dev/null; }; then | |
710 | uname=$dir | |
4ca84cff | 711 | fi |
28f540f4 | 712 | fi |
4ca84cff | 713 | ]dnl |
28f540f4 RM |
714 | done |
715 | ||
716 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) | |
717 | ||
718 | # If we will use the generic uname implementation, we must figure out what | |
719 | # it will say by examining the system, and write the results in config-name.h. | |
720 | if test "$uname" = generic; then | |
721 | ||
722 | changequote(,)dnl | |
723 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
724 | changequote([,])dnl | |
725 | if test $uname_sysname != $config_os; then | |
726 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
727 | fi | |
728 | dnl | |
729 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
730 | if test -r /vmunix; then | |
731 | kernel_id=`strings /vmunix | grep UNIX` | |
732 | elif test -r /dynix; then | |
733 | kernel_id=`strings /dynix | grep DYNIX` | |
734 | else | |
735 | kernel_id= | |
736 | fi | |
737 | ])dnl | |
738 | ||
b8dc6a10 | 739 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
28f540f4 RM |
740 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
741 | changequote(,)dnl | |
742 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
743 | changequote([,])dnl | |
744 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
745 | != x$config_release; then | |
746 | # The configuration release is a substring of the kernel release. | |
747 | libc_cv_uname_release=$kernel_release | |
748 | elif test x$config_release != x; then | |
749 | libc_cv_uname_release=$config_release | |
750 | elif test x$kernel_release != x; then | |
751 | libc_cv_uname_release=$kernel_release | |
752 | else | |
753 | libc_cv_uname_release=unknown | |
754 | fi]) | |
28f540f4 RM |
755 | uname_release="$libc_cv_uname_release" |
756 | ||
b8dc6a10 | 757 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
28f540f4 RM |
758 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
759 | changequote(,)dnl | |
760 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
761 | changequote([,])dnl | |
762 | if test -n "$kernel_version"; then | |
763 | libc_cv_uname_version="$kernel_version" | |
764 | else | |
765 | libc_cv_uname_version=unknown | |
766 | fi]) | |
28f540f4 RM |
767 | uname_version="$libc_cv_uname_version" |
768 | ||
769 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
770 | config_uname=config-name.h:config-name.in | |
771 | else | |
772 | # For non-generic uname, we don't need to create config-name.h at all. | |
773 | config_uname= | |
774 | fi | |
775 | ||
96aa2d94 RM |
776 | AC_MSG_CHECKING(stdio selection) |
777 | AC_SUBST(stdio) | |
778 | case $stdio in | |
779 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
780 | default) stdio=stdio ;; | |
781 | esac | |
782 | AC_MSG_RESULT($stdio) | |
783 | ||
84384f5b UD |
784 | AC_SUBST(libc_cv_slibdir) |
785 | AC_SUBST(libc_cv_sysconfdir) | |
1ef32c3d UD |
786 | AC_SUBST(libc_cv_rootsbindir) |
787 | ||
788 | AC_SUBST(has_ldconfig) | |
84384f5b | 789 | |
c224a18a | 790 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) |
28f540f4 RM |
791 | if test $gnu_ld = yes; then |
792 | AC_DEFINE(HAVE_GNU_LD) | |
793 | fi | |
794 | if test $gnu_as = yes; then | |
795 | AC_DEFINE(HAVE_GNU_AS) | |
796 | fi | |
797 | if test $elf = yes; then | |
798 | AC_DEFINE(HAVE_ELF) | |
799 | fi | |
28f540f4 | 800 | |
ff3d7ed3 RM |
801 | AC_SUBST(shared) |
802 | if test $shared = default; then | |
803 | if test $gnu_ld = yes; then | |
804 | shared=$elf | |
f65fd747 UD |
805 | else |
806 | # For now we do not assume shared libs are available. In future more | |
807 | # tests might become available. | |
808 | shared=no | |
ff3d7ed3 RM |
809 | fi |
810 | fi | |
811 | AC_SUBST(profile) | |
812 | AC_SUBST(omitfp) | |
5a97622d | 813 | AC_SUBST(bounded) |
ff3d7ed3 | 814 | |
edf5b2d7 UD |
815 | AC_SUBST(DEFINES) |
816 | ||
28f540f4 RM |
817 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
818 | config_makefile= | |
819 | else | |
820 | config_makefile=Makefile | |
821 | fi | |
822 | ||
df4ef2ab UD |
823 | VERSION=`sed -e 's/^#define VERSION "\([^"]*\)"/\1/p' -e d < $srcdir/version.h` |
824 | AC_SUBST(VERSION) | |
825 | ||
826 | AC_OUTPUT(config.make glibcbug ${config_makefile} ${config_uname}, , | |
28f540f4 | 827 | [echo '$config_vars' >> config.make]) |