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Commit | Line | Data |
---|---|---|
d586354e | 1 | Dnl Process this file with autoconf to produce a configure script. |
ff3d7ed3 | 2 | AC_REVISION([$CVSid$]) |
0e3426bb | 3 | AC_PREREQ(2.10)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 = $withval" ;; | |
32 | esac | |
33 | ]) | |
28f540f4 | 34 | |
ff3d7ed3 | 35 | dnl Arguments to specify presence of other packages/features. |
335aa320 RM |
36 | AC_ARG_WITH(fp, dnl |
37 | --with-fp if using floating-point hardware, | |
38 | with_fp=$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 $enableval = yes; then |
56 | stdio=libio | |
57 | else | |
58 | stdio=stdio | |
59 | fi], | |
60 | stdio=default) | |
deab9dea | 61 | |
ff3d7ed3 RM |
62 | dnl Arguments to enable or disable building the shared, profiled, and |
63 | dnl -fomit-frame-pointer libraries. | |
64 | AC_ARG_ENABLE(shared, dnl | |
65 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
424f8c09 | 66 | shared=$enableval, shared=default) |
ff3d7ed3 RM |
67 | AC_ARG_ENABLE(profile, dnl |
68 | [ --enable-profile build profiled library [default=yes]], | |
424f8c09 | 69 | profile=$enableval, profile=yes) |
ff3d7ed3 RM |
70 | AC_ARG_ENABLE(omitfp, dnl |
71 | [ --enable-omitfp build undebuggable optimized library [default=no]], | |
424f8c09 | 72 | omitfp=$enableval, omitfp=no) |
ff3d7ed3 | 73 | |
28f540f4 RM |
74 | AC_CANONICAL_HOST |
75 | # We keep the original values in `$config_*' and never modify them, so we | |
76 | # can write them unchanged into config.make. Everything else uses | |
77 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
78 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
79 | ||
a2fe9c76 RM |
80 | # Some configurations imply other options. |
81 | case "$host_os" in | |
82 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
83 | # These systems always use GNU tools. | |
c8cf0b14 | 84 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
85 | esac |
86 | case "$host_os" in | |
87 | gnu* | linux* | sysv4* | solaris2*) | |
88 | # These systems always use the ELF format. | |
c8cf0b14 RM |
89 | elf=yes ;; |
90 | esac | |
91 | ||
92 | # Linux/Alpha does not use ELF yet. | |
93 | case "$host_cpu-$host_os" in | |
94 | alpha*-linux*) | |
95 | gnu_ld=no elf=no ;; | |
a2fe9c76 RM |
96 | esac |
97 | ||
28f540f4 RM |
98 | machine=$config_machine |
99 | vendor=$config_vendor | |
100 | os=$config_os | |
101 | ||
102 | dnl We need to use [ and ] for other purposes for a while now. | |
103 | changequote(,)dnl | |
104 | # Expand the configuration machine name into a subdirectory by architecture | |
105 | # type and particular chip. | |
106 | case "$machine" in | |
f0523145 RM |
107 | a29k | am29000) base_machine=a29k machine=a29k ;; |
108 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
109 | hppa*) base_machine=hppa machine=hppa/$machine ;; | |
110 | i[345]86) base_machine=i386 machine=i386/$machine ;; | |
111 | m680?0) base_machine=m68k machine=m68k/$machine ;; | |
112 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
113 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
114 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
115 | mips*) base_machine=mips machine=mips/$machine ;; | |
116 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; | |
117 | sparc[6789]) base_machine=sparc machine=sparc/$machine ;; | |
118 | supersparc) base_machine=sparc machine=sparc/sparc8 ;; | |
28f540f4 | 119 | esac |
f0523145 RM |
120 | changequote([,])dnl |
121 | AC_SUBST(base_machine) | |
28f540f4 | 122 | |
f0523145 RM |
123 | # Compute the list of sysdep directories for this configuration. |
124 | sysdep_dir=$srcdir/sysdeps | |
125 | AC_CACHE_CHECK(sysdep dirs, libc_cv_sysdirs, [dnl | |
126 | dnl We need to use [ and ] for other purposes for a while now. | |
127 | changequote(,)dnl | |
28f540f4 RM |
128 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
129 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
130 | ||
131 | case "$os" in | |
132 | gnu*) | |
133 | base_os=mach/hurd ;; | |
883bc19b | 134 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 135 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 136 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 137 | base_os=unix/bsd ;; |
d586354e | 138 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 139 | base_os=unix/sysv ;; |
d586354e | 140 | solaris[2-9]*) |
28f540f4 RM |
141 | base_os=unix/sysv/sysv4 ;; |
142 | none) | |
143 | base_os=standalone ;; | |
144 | *) | |
145 | base_os='' ;; | |
146 | esac | |
147 | ||
148 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
149 | tail=$os | |
150 | ostry=$os | |
151 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
152 | ostry="$ostry /$o" | |
153 | tail=$o | |
75914335 | 154 | done |
28f540f4 RM |
155 | o=`echo $tail | sed 's/[0-9]*$//'` |
156 | if test $o != $tail; then | |
157 | ostry="$ostry /$o" | |
158 | fi | |
159 | ||
160 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
161 | base= | |
162 | tail=$base_os | |
163 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
164 | set $b | |
165 | base="$base /$1" | |
166 | tail="$2" | |
167 | done | |
168 | ||
169 | # For sparc/sparc9, try sparc/sparc9 and then sparc. | |
170 | mach= | |
171 | tail=$machine | |
172 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
173 | set $m | |
10ceac89 RM |
174 | # Prepend the machine's FPU directory unless --without-fp. |
175 | if test "$with_fp" = yes; then | |
176 | mach="$mach /$1/fpu" | |
82d00cab | 177 | fi |
28f540f4 RM |
178 | mach="$mach /$1" |
179 | tail="$2" | |
180 | done | |
181 | ||
182 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
183 | changequote([,])dnl | |
184 | ||
185 | # Find what sysdep directories exist. | |
186 | sysnames= | |
187 | for b in $base ''; do | |
188 | for m0 in $mach ''; do | |
189 | for v in /$vendor ''; do | |
190 | for o in /$ostry ''; do | |
191 | for m in $mach ''; do | |
192 | try="$m0$b$v$o$m" | |
587dbc6f | 193 | test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2 |
28f540f4 RM |
194 | if test -d $sysdep_dir$try; then |
195 | sysnames="$sysnames $try" | |
196 | { test -n "$o" || test -n "$b"; } && os_used=t | |
197 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
198 | fi | |
199 | done | |
200 | done | |
201 | done | |
202 | done | |
203 | done | |
204 | ||
205 | if test -z "$os_used" && test "$os" != none; then | |
206 | AC_MSG_ERROR(Operating system $os is not supported.) | |
207 | fi | |
208 | if test -z "$machine_used" && test "$machine" != none; then | |
209 | AC_MSG_ERROR(The $machine is not supported.) | |
210 | fi | |
211 | ||
212 | # We have now validated the configuration. | |
213 | ||
335aa320 | 214 | |
10ceac89 RM |
215 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
216 | # We prepend these rather than inserting them whereever the machine appears | |
217 | # because things specified by the machine's ELF ABI should override | |
218 | # OS-specific things, and should always be the same for any OS on the | |
219 | # machine (otherwise what's the point of an ABI?). | |
220 | if test "$elf" = yes; then | |
221 | elf_dirs= | |
28f540f4 | 222 | for m in $mach; do |
10ceac89 RM |
223 | if test -d $sysdep_dir$m/elf; then |
224 | elf_dirs="$elf_dirs $m/elf" | |
28f540f4 RM |
225 | fi |
226 | done | |
10ceac89 | 227 | sysnames="`echo $elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" |
28f540f4 RM |
228 | fi |
229 | ||
335aa320 | 230 | |
10ceac89 RM |
231 | # Remove the leading slashes. |
232 | sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`" | |
233 | ||
335aa320 | 234 | |
28f540f4 RM |
235 | # Expand the list of system names into a full list of directories |
236 | # from each element's parent name and Implies file (if present). | |
237 | set $sysnames | |
238 | while test $# -gt 0; do | |
239 | name=$1 | |
240 | shift | |
241 | ||
242 | if test -f $sysdep_dir/$name/Implies; then | |
243 | # Collect more names from the `Implies' file (removing comments). | |
244 | implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`" | |
245 | for x in $implied; do | |
246 | test -d $sysdep_dir/$x || echo "Warning: $name implies nonexistent $x">&2 | |
247 | done | |
248 | else | |
249 | implied= | |
250 | fi | |
251 | ||
252 | # Add NAME to the list of names. | |
253 | names="$names $name" | |
254 | ||
255 | # Find the parent of NAME, using the empty string if it has none. | |
256 | changequote(,)dnl | |
257 | parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`" | |
258 | changequote([,])dnl | |
259 | ||
260 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
261 | # the list of names to be processed (the argument list). We prepend the | |
262 | # implied names to the list and append the parent. We want implied | |
263 | # directories to come before further directories inferred from the | |
264 | # configuration components; this ensures that for sysv4, unix/common | |
265 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
266 | # after sysv4). | |
267 | sysnames="`echo $implied $* $parent`" | |
268 | test -n "$sysnames" && set $sysnames | |
269 | done | |
270 | ||
271 | # Add the default directories. | |
272 | names="$names generic stub" | |
273 | ||
274 | # Now uniquize the list. | |
275 | seen= | |
276 | sysnames= | |
277 | for name in $names; do | |
278 | if echo "$seen" | fgrep -x $name >/dev/null; then | |
279 | # Already in the list. | |
280 | true; | |
281 | else | |
282 | # A new one. | |
283 | if test -z "$seen"; then | |
284 | seen="$name" sysnames="$name" | |
285 | else | |
286 | seen="$seen | |
287 | $name" | |
288 | sysnames="$sysnames $name" | |
289 | fi | |
290 | fi | |
291 | done | |
292 | libc_cv_sysdirs="$sysnames"]) | |
293 | AC_SUBST(sysnames) sysnames="$libc_cv_sysdirs" | |
28f540f4 | 294 | |
28f540f4 RM |
295 | AC_PROG_INSTALL |
296 | if test "$INSTALL" = "${srcdir}/install-sh"; then | |
297 | # The makefiles need to use a different form to find it in $srcdir. | |
298 | INSTALL='$(..)./install-sh' | |
299 | fi | |
0e3426bb | 300 | AC_PROG_LN_S |
c17097f1 | 301 | AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :) |
28f540f4 | 302 | |
ff3d7ed3 | 303 | AC_CHECK_TOOL(CC, gcc) |
7c713e28 | 304 | AC_PROG_CPP |
ff3d7ed3 RM |
305 | AC_CHECK_TOOL(AR, ar) |
306 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
7c713e28 RM |
307 | AC_CHECK_TOOL(OBJDUMP, objdump) |
308 | AC_CHECK_TOOL(OBJCOPY, objcopy) | |
309 | AC_PROG_AWK | |
28f540f4 | 310 | |
b8dc6a10 | 311 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
312 | echo '#include <stddef.h> |
313 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
314 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
315 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
316 | libc_cv_signed_size_t=no | |
317 | else | |
318 | libc_cv_signed_size_t=yes | |
319 | fi | |
320 | rm -f conftest*]) | |
28f540f4 RM |
321 | if test $libc_cv_signed_size_t = yes; then |
322 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
323 | cat >> confdefs.h <<\EOF | |
324 | #undef __SIZE_TYPE__ | |
325 | #define __SIZE_TYPE__ unsigned | |
326 | EOF | |
327 | fi | |
328 | ||
b8dc6a10 | 329 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
330 | AC_TRY_COMPILE(dnl |
331 | [#define __need_size_t | |
332 | #define __need_wchar_t | |
333 | #include <stddef.h> | |
334 | #define __need_NULL | |
335 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
336 | #ifdef offsetof | |
337 | #error stddef.h ignored __need_* | |
338 | #endif | |
339 | if (&size == NULL || &wchar == NULL) abort ();], | |
340 | libc_cv_friendly_stddef=yes, | |
341 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
342 | if test $libc_cv_friendly_stddef = yes; then |
343 | config_vars="$config_vars | |
344 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
345 | fi | |
346 | ||
b8dc6a10 RM |
347 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
348 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
349 | cat > conftest.S <<EOF |
350 | #include "confdefs.h" | |
351 | /* Nothing whatsoever. */ | |
352 | EOF | |
353 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
354 | libc_cv_need_minus_P=no | |
355 | else | |
356 | libc_cv_need_minus_P=yes | |
357 | fi | |
358 | rm -f conftest*]) | |
28f540f4 RM |
359 | if test $libc_cv_need_minus_P = yes; then |
360 | config_vars="$config_vars | |
361 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
362 | fi | |
363 | ||
b8dc6a10 RM |
364 | AC_CACHE_CHECK(for assembler global-symbol directive, |
365 | libc_cv_asm_global_directive, [dnl | |
9a70fcab UD |
366 | libc_cv_asm_global_directive=UNKNOWN |
367 | for ac_globl in .globl .global; do | |
368 | cat > conftest.s <<EOF | |
369 | .text | |
370 | ${ac_globl} foo | |
371 | foo: .long 0 | |
372 | EOF | |
373 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
374 | libc_cv_asm_global_directive=${ac_globl} | |
375 | fi | |
376 | rm -f conftest* | |
377 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
378 | done]) | |
9a70fcab UD |
379 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
380 | AC_MSG_ERROR(cannot determine asm global directive) | |
381 | else | |
382 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
383 | fi | |
384 | ||
b8dc6a10 | 385 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 386 | cat > conftest.s <<EOF |
e215c478 RM |
387 | .text |
388 | foo: .long 0 | |
df2a0c93 | 389 | .set glibc_conftest_frobozz,foo |
9a70fcab | 390 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 391 | EOF |
df2a0c93 RM |
392 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
393 | # (but it doesn't work), so we must do a linking check to be sure. | |
394 | cat > conftest1.c <<\EOF | |
395 | extern int glibc_conftest_frobozz; | |
396 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
397 | EOF | |
398 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
cb2f05ed | 399 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
e215c478 RM |
400 | libc_cv_asm_set_directive=yes |
401 | else | |
402 | libc_cv_asm_set_directive=no | |
403 | fi | |
65b3cbcb | 404 | rm -f conftest*]) |
e215c478 RM |
405 | if test $libc_cv_asm_set_directive = yes; then |
406 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
407 | fi | |
408 | ||
b8dc6a10 RM |
409 | if test $elf != yes; then |
410 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
411 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
412 | asm (".section .fini");], | |
413 | libc_cv_have_initfini=yes, | |
414 | libc_cv_have_initfini=no)]) | |
415 | AC_SUBST(libc_cv_have_initfini)dnl | |
416 | if test $libc_cv_have_initfini = yes; then | |
417 | AC_DEFINE(HAVE_INITFINI) | |
418 | fi | |
419 | fi | |
e215c478 | 420 | |
c224a18a RM |
421 | if test $elf = yes; then |
422 | libc_cv_asm_underscores=no | |
423 | else | |
424 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
857fa1b8 RM |
425 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], |
426 | libc_cv_asm_underscores=yes, | |
427 | libc_cv_asm_underscores=no)]) | |
c224a18a RM |
428 | fi |
429 | if test $libc_cv_asm_underscores = no; then | |
430 | AC_DEFINE(NO_UNDERSCORES) | |
431 | fi | |
432 | ||
433 | if test $elf = yes; then | |
434 | libc_cv_weak_symbols=yes | |
435 | libc_cv_asm_weak_directive=yes | |
436 | libc_cv_asm_weakext_directive=no | |
437 | else | |
438 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
439 | [dnl | |
440 | cat > conftest.s <<EOF | |
441 | .text | |
442 | ${libc_cv_asm_global_directive} foo | |
443 | foo: .long 0 | |
444 | .weak foo | |
445 | .weak bar; bar = foo | |
446 | EOF | |
447 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
448 | libc_cv_asm_weak_directive=yes | |
449 | else | |
450 | libc_cv_asm_weak_directive=no | |
451 | fi | |
452 | rm -f conftest*]) | |
453 | ||
c8cf0b14 | 454 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
455 | AC_CACHE_CHECK(for assembler .weakext directive, |
456 | libc_cv_asm_weakext_directive, | |
457 | [dnl | |
458 | cat > conftest.s <<EOF | |
459 | .text | |
460 | ${libc_cv_asm_global_directive} foo | |
461 | foo: .long 0 | |
462 | .weakext foo | |
ffcf9634 | 463 | .weakext bar, foo |
c224a18a RM |
464 | EOF |
465 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
466 | libc_cv_asm_weakext_directive=yes | |
467 | else | |
468 | libc_cv_asm_weakext_directive=no | |
469 | fi | |
470 | rm -f conftest*]) | |
471 | ||
472 | fi # no .weak | |
473 | fi # not ELF | |
474 | ||
ffcf9634 | 475 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 476 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 477 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
478 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
479 | fi | |
480 | ||
a641835a RM |
481 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
482 | cat > conftest.c <<\EOF | |
483 | main () { exit (0); } | |
484 | EOF | |
485 | if ${CC-cc} $CFLAGS -Wl,--no-whole-archive \ | |
486 | -o conftest conftest.c 2>/dev/null; then | |
487 | libc_cv_ld_no_whole_archive=yes | |
488 | else | |
489 | libc_cv_ld_no_whole_archive=no | |
490 | fi | |
491 | rm -f conftest*]) | |
492 | AC_SUBST(libc_cv_ld_no_whole_archive)dnl | |
493 | ||
c224a18a RM |
494 | ### End of automated tests. |
495 | ### Now run sysdeps configure fragments. | |
496 | ||
28f540f4 RM |
497 | # sysdeps configure fragments may set these with files to be linked below. |
498 | libc_link_dests= | |
499 | libc_link_sources= | |
500 | ||
501 | # Iterate over all the sysdep directories we will use, running their | |
502 | # configure fragments, and looking for a uname implementation. | |
503 | uname= | |
504 | for dir in $sysnames; do | |
505 | if test -r $sysdep_dir/$dir/configure; then | |
506 | AC_MSG_RESULT(running configure fragment for $dir) | |
507 | . $sysdep_dir/$dir/configure | |
508 | fi | |
4ca84cff | 509 | [ |
28f540f4 | 510 | if test -z "$uname"; then |
b86199fb RM |
511 | if test -r $sysdep_dir/$dir/uname.c || |
512 | test -r $sysdep_dir/$dir/uname.S || | |
513 | { test -r $sysdep_dir/$dir/syscalls.list && | |
514 | grep '^uname[ ]' $sysdep_dir/$dir/syscalls.list >/dev/null; }; then | |
515 | uname=$dir | |
4ca84cff | 516 | fi |
28f540f4 | 517 | fi |
4ca84cff | 518 | ]dnl |
28f540f4 RM |
519 | done |
520 | ||
521 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) | |
522 | ||
523 | # If we will use the generic uname implementation, we must figure out what | |
524 | # it will say by examining the system, and write the results in config-name.h. | |
525 | if test "$uname" = generic; then | |
526 | ||
527 | changequote(,)dnl | |
528 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
529 | changequote([,])dnl | |
530 | if test $uname_sysname != $config_os; then | |
531 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
532 | fi | |
533 | dnl | |
534 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
535 | if test -r /vmunix; then | |
536 | kernel_id=`strings /vmunix | grep UNIX` | |
537 | elif test -r /dynix; then | |
538 | kernel_id=`strings /dynix | grep DYNIX` | |
539 | else | |
540 | kernel_id= | |
541 | fi | |
542 | ])dnl | |
543 | ||
b8dc6a10 | 544 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
28f540f4 RM |
545 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
546 | changequote(,)dnl | |
547 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
548 | changequote([,])dnl | |
549 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
550 | != x$config_release; then | |
551 | # The configuration release is a substring of the kernel release. | |
552 | libc_cv_uname_release=$kernel_release | |
553 | elif test x$config_release != x; then | |
554 | libc_cv_uname_release=$config_release | |
555 | elif test x$kernel_release != x; then | |
556 | libc_cv_uname_release=$kernel_release | |
557 | else | |
558 | libc_cv_uname_release=unknown | |
559 | fi]) | |
28f540f4 RM |
560 | uname_release="$libc_cv_uname_release" |
561 | ||
b8dc6a10 | 562 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
28f540f4 RM |
563 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
564 | changequote(,)dnl | |
565 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
566 | changequote([,])dnl | |
567 | if test -n "$kernel_version"; then | |
568 | libc_cv_uname_version="$kernel_version" | |
569 | else | |
570 | libc_cv_uname_version=unknown | |
571 | fi]) | |
28f540f4 RM |
572 | uname_version="$libc_cv_uname_version" |
573 | ||
574 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
575 | config_uname=config-name.h:config-name.in | |
576 | else | |
577 | # For non-generic uname, we don't need to create config-name.h at all. | |
578 | config_uname= | |
579 | fi | |
580 | ||
96aa2d94 RM |
581 | AC_MSG_CHECKING(stdio selection) |
582 | AC_SUBST(stdio) | |
583 | case $stdio in | |
584 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
585 | default) stdio=stdio ;; | |
586 | esac | |
587 | AC_MSG_RESULT($stdio) | |
588 | ||
c224a18a | 589 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) |
28f540f4 RM |
590 | if test $gnu_ld = yes; then |
591 | AC_DEFINE(HAVE_GNU_LD) | |
592 | fi | |
593 | if test $gnu_as = yes; then | |
594 | AC_DEFINE(HAVE_GNU_AS) | |
595 | fi | |
596 | if test $elf = yes; then | |
597 | AC_DEFINE(HAVE_ELF) | |
598 | fi | |
28f540f4 | 599 | |
ff3d7ed3 RM |
600 | AC_SUBST(shared) |
601 | if test $shared = default; then | |
602 | if test $gnu_ld = yes; then | |
603 | shared=$elf | |
604 | fi | |
605 | fi | |
606 | AC_SUBST(profile) | |
607 | AC_SUBST(omitfp) | |
608 | ||
28f540f4 RM |
609 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
610 | config_makefile= | |
611 | else | |
612 | config_makefile=Makefile | |
613 | fi | |
614 | ||
615 | AC_OUTPUT(config.make ${config_makefile} ${config_uname}, , | |
616 | [echo '$config_vars' >> config.make]) |