]>
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 = $withval" ;; | |
32 | esac | |
33 | ]) | |
28f540f4 | 34 | |
ff3d7ed3 | 35 | dnl Arguments to specify presence of other packages/features. |
335aa320 | 36 | AC_ARG_WITH(fp, dnl |
a5b7bf0e | 37 | --with-fp if using floating-point hardware [default=yes], |
335aa320 | 38 | with_fp=$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 $enableval = yes; then |
56 | stdio=libio | |
57 | else | |
58 | stdio=stdio | |
59 | fi], | |
60 | stdio=default) | |
deab9dea | 61 | |
ff3d7ed3 RM |
62 | dnl Arguments to enable or disable building the shared, profiled, and |
63 | dnl -fomit-frame-pointer libraries. | |
64 | AC_ARG_ENABLE(shared, dnl | |
65 | [ --enable-shared build shared library [default=yes if GNU ld & ELF]], | |
6b3a2224 | 66 | shared=$enableval, shared=default) |
ff3d7ed3 RM |
67 | AC_ARG_ENABLE(profile, dnl |
68 | [ --enable-profile build profiled library [default=yes]], | |
6b3a2224 | 69 | profile=$enableval, profile=yes) |
ff3d7ed3 | 70 | AC_ARG_ENABLE(omitfp, dnl |
6b3a2224 RM |
71 | [ --enable-omitfp build undebuggable optimized library [default=no]], |
72 | omitfp=$enableval, omitfp=no) | |
73 | ||
74 | dnl Generic infrastructure for drop-in additions to libc. | |
75 | AC_ARG_ENABLE(add-ons, dnl | |
76 | [ --enable-add-ons=DIR... configure and build named extra directories], | |
e75154a6 RM |
77 | [add_ons=`echo "$enableval" | sed 's/,/ /g'`], |
78 | [add_ons=]) | |
6b3a2224 | 79 | AC_CONFIG_SUBDIRS($add_ons) |
ff3d7ed3 | 80 | |
28f540f4 RM |
81 | AC_CANONICAL_HOST |
82 | # We keep the original values in `$config_*' and never modify them, so we | |
83 | # can write them unchanged into config.make. Everything else uses | |
84 | # $machine, $vendor, and $os, and changes them whenever convenient. | |
85 | config_machine=$host_cpu config_vendor=$host_vendor config_os=$host_os | |
86 | ||
a2fe9c76 RM |
87 | # Some configurations imply other options. |
88 | case "$host_os" in | |
89 | gnu* | linux* | bsd4.4* | netbsd* | freebsd*) | |
90 | # These systems always use GNU tools. | |
c8cf0b14 | 91 | gnu_ld=yes gnu_as=yes ;; |
a2fe9c76 RM |
92 | esac |
93 | case "$host_os" in | |
3776d592 RM |
94 | linux*ecoff*) |
95 | ;; | |
a2fe9c76 | 96 | gnu* | linux* | sysv4* | solaris2*) |
3776d592 RM |
97 | # These systems (almost) always use the ELF format. |
98 | elf=yes | |
84724245 | 99 | ;; |
a2fe9c76 RM |
100 | esac |
101 | ||
28f540f4 RM |
102 | machine=$config_machine |
103 | vendor=$config_vendor | |
104 | os=$config_os | |
105 | ||
106 | dnl We need to use [ and ] for other purposes for a while now. | |
107 | changequote(,)dnl | |
108 | # Expand the configuration machine name into a subdirectory by architecture | |
109 | # type and particular chip. | |
110 | case "$machine" in | |
f0523145 RM |
111 | a29k | am29000) base_machine=a29k machine=a29k ;; |
112 | alpha*) base_machine=alpha machine=alpha/$machine ;; | |
113 | hppa*) base_machine=hppa machine=hppa/$machine ;; | |
114 | i[345]86) base_machine=i386 machine=i386/$machine ;; | |
115 | m680?0) base_machine=m68k machine=m68k/$machine ;; | |
116 | m68k) base_machine=m68k machine=m68k/m68020 ;; | |
117 | m88???) base_machine=m88k machine=m88k/$machine ;; | |
118 | m88k) base_machine=m88k machine=m88k/m88100 ;; | |
119 | mips*) base_machine=mips machine=mips/$machine ;; | |
120 | mips64*) base_machine=mips64 machine=mips/mips64/$machine ;; | |
121 | sparc[6789]) base_machine=sparc machine=sparc/$machine ;; | |
122 | supersparc) base_machine=sparc machine=sparc/sparc8 ;; | |
28f540f4 | 123 | esac |
f0523145 RM |
124 | changequote([,])dnl |
125 | AC_SUBST(base_machine) | |
28f540f4 | 126 | |
f0523145 | 127 | # Compute the list of sysdep directories for this configuration. |
f332db02 | 128 | # This can take a while to compute. |
f0523145 | 129 | sysdep_dir=$srcdir/sysdeps |
f332db02 | 130 | AC_MSG_CHECKING(sysdep dirs) |
f0523145 RM |
131 | dnl We need to use [ and ] for other purposes for a while now. |
132 | changequote(,)dnl | |
28f540f4 RM |
133 | # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. |
134 | os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" | |
135 | ||
136 | case "$os" in | |
137 | gnu*) | |
138 | base_os=mach/hurd ;; | |
883bc19b | 139 | netbsd* | 386bsd* | freebsd* | bsdi*) |
28f540f4 | 140 | base_os=unix/bsd/bsd4.4 ;; |
222c4e71 | 141 | osf* | sunos* | ultrix* | newsos* | dynix* | *bsd*) |
28f540f4 | 142 | base_os=unix/bsd ;; |
d586354e | 143 | sysv* | isc* | esix* | sco* | minix* | irix4* | linux*) |
28f540f4 | 144 | base_os=unix/sysv ;; |
d586354e | 145 | solaris[2-9]*) |
28f540f4 RM |
146 | base_os=unix/sysv/sysv4 ;; |
147 | none) | |
148 | base_os=standalone ;; | |
149 | *) | |
150 | base_os='' ;; | |
151 | esac | |
152 | ||
153 | # For sunos4.1.1, try sunos4.1.1, then sunos4.1, then sunos4, then sunos. | |
154 | tail=$os | |
155 | ostry=$os | |
156 | while o=`echo $tail | sed 's/\.[^.]*$//'`; test $o != $tail; do | |
157 | ostry="$ostry /$o" | |
158 | tail=$o | |
75914335 | 159 | done |
28f540f4 RM |
160 | o=`echo $tail | sed 's/[0-9]*$//'` |
161 | if test $o != $tail; then | |
162 | ostry="$ostry /$o" | |
163 | fi | |
164 | ||
165 | # For unix/sysv/sysv4, try unix/sysv/sysv4, then unix/sysv, then unix. | |
166 | base= | |
167 | tail=$base_os | |
168 | while b=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$b"; do | |
169 | set $b | |
170 | base="$base /$1" | |
171 | tail="$2" | |
172 | done | |
173 | ||
174 | # For sparc/sparc9, try sparc/sparc9 and then sparc. | |
175 | mach= | |
176 | tail=$machine | |
177 | while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do | |
178 | set $m | |
10ceac89 RM |
179 | # Prepend the machine's FPU directory unless --without-fp. |
180 | if test "$with_fp" = yes; then | |
181 | mach="$mach /$1/fpu" | |
82d00cab | 182 | fi |
28f540f4 RM |
183 | mach="$mach /$1" |
184 | tail="$2" | |
185 | done | |
186 | ||
187 | dnl We are done with glob and regexp uses of [ and ]; return to autoconf. | |
188 | changequote([,])dnl | |
189 | ||
190 | # Find what sysdep directories exist. | |
191 | sysnames= | |
192 | for b in $base ''; do | |
193 | for m0 in $mach ''; do | |
194 | for v in /$vendor ''; do | |
195 | for o in /$ostry ''; do | |
196 | for m in $mach ''; do | |
197 | try="$m0$b$v$o$m" | |
587dbc6f | 198 | test -n "$enable_debug_configure" && echo "$0 [DEBUG]: try $try" >&2 |
28f540f4 RM |
199 | if test -d $sysdep_dir$try; then |
200 | sysnames="$sysnames $try" | |
201 | { test -n "$o" || test -n "$b"; } && os_used=t | |
202 | { test -n "$m" || test -n "$m0"; } && machine_used=t | |
203 | fi | |
204 | done | |
205 | done | |
206 | done | |
207 | done | |
208 | done | |
209 | ||
210 | if test -z "$os_used" && test "$os" != none; then | |
211 | AC_MSG_ERROR(Operating system $os is not supported.) | |
212 | fi | |
213 | if test -z "$machine_used" && test "$machine" != none; then | |
214 | AC_MSG_ERROR(The $machine is not supported.) | |
215 | fi | |
216 | ||
217 | # We have now validated the configuration. | |
218 | ||
335aa320 | 219 | |
10ceac89 RM |
220 | # If using ELF, look for an `elf' subdirectory of each machine directory. |
221 | # We prepend these rather than inserting them whereever the machine appears | |
222 | # because things specified by the machine's ELF ABI should override | |
223 | # OS-specific things, and should always be the same for any OS on the | |
224 | # machine (otherwise what's the point of an ABI?). | |
225 | if test "$elf" = yes; then | |
226 | elf_dirs= | |
28f540f4 | 227 | for m in $mach; do |
10ceac89 RM |
228 | if test -d $sysdep_dir$m/elf; then |
229 | elf_dirs="$elf_dirs $m/elf" | |
28f540f4 RM |
230 | fi |
231 | done | |
10ceac89 | 232 | sysnames="`echo $elf_dirs | sed -e 's,^/,,' -e 's, /,,g'` $sysnames" |
28f540f4 RM |
233 | fi |
234 | ||
335aa320 | 235 | |
10ceac89 RM |
236 | # Remove the leading slashes. |
237 | sysnames="`echo $sysnames | sed -e 's@^/@@' -e 's@ /@ @g'`" | |
238 | ||
335aa320 | 239 | |
28f540f4 RM |
240 | # Expand the list of system names into a full list of directories |
241 | # from each element's parent name and Implies file (if present). | |
242 | set $sysnames | |
e50ec9f9 | 243 | names= |
28f540f4 RM |
244 | while test $# -gt 0; do |
245 | name=$1 | |
246 | shift | |
247 | ||
e50ec9f9 | 248 | case " $names " in *" $name "*) |
f332db02 RM |
249 | # Already in the list. |
250 | continue | |
e50ec9f9 | 251 | esac |
f332db02 RM |
252 | |
253 | # Report each name as we discover it, so there is no long pause in output. | |
254 | echo $ac_n "$name $ac_c" >&AC_FD_MSG | |
255 | ||
28f540f4 RM |
256 | if test -f $sysdep_dir/$name/Implies; then |
257 | # Collect more names from the `Implies' file (removing comments). | |
258 | implied="`sed 's/#.*$//' < $sysdep_dir/$name/Implies`" | |
259 | for x in $implied; do | |
f332db02 RM |
260 | test -d $sysdep_dir/$x || { |
261 | AC_MSG_WARN(sysdeps/$name/Implies specifies nonexistent $x) | |
262 | } | |
28f540f4 RM |
263 | done |
264 | else | |
265 | implied= | |
266 | fi | |
267 | ||
268 | # Add NAME to the list of names. | |
269 | names="$names $name" | |
270 | ||
271 | # Find the parent of NAME, using the empty string if it has none. | |
272 | changequote(,)dnl | |
273 | parent="`echo $name | sed -n -e '/\//!q' -e 's=/[^/]*$==p'`" | |
274 | changequote([,])dnl | |
275 | ||
276 | # Add the names implied by NAME, and NAME's parent (if it has one), to | |
277 | # the list of names to be processed (the argument list). We prepend the | |
278 | # implied names to the list and append the parent. We want implied | |
279 | # directories to come before further directories inferred from the | |
280 | # configuration components; this ensures that for sysv4, unix/common | |
281 | # (implied by unix/sysv/sysv4) comes before unix/sysv (in ostry (here $*) | |
282 | # after sysv4). | |
283 | sysnames="`echo $implied $* $parent`" | |
284 | test -n "$sysnames" && set $sysnames | |
285 | done | |
286 | ||
287 | # Add the default directories. | |
f332db02 RM |
288 | sysnames="$names generic stub" |
289 | AC_SUBST(sysnames) | |
290 | # The other names were emitted during the scan. | |
291 | AC_MSG_RESULT(generic stub) | |
28f540f4 | 292 | |
f332db02 RM |
293 | |
294 | ### Locate tools. | |
28f540f4 | 295 | |
28f540f4 RM |
296 | AC_PROG_INSTALL |
297 | if test "$INSTALL" = "${srcdir}/install-sh"; then | |
298 | # The makefiles need to use a different form to find it in $srcdir. | |
299 | INSTALL='$(..)./install-sh' | |
300 | fi | |
0e3426bb | 301 | AC_PROG_LN_S |
c17097f1 | 302 | AC_CHECK_PROGS(MSGFMT, msgfmt gmsgfmt, :) |
28f540f4 | 303 | |
ff3d7ed3 | 304 | AC_CHECK_TOOL(CC, gcc) |
072ebcef RM |
305 | if test $host != $build; then |
306 | AC_CHECK_PROG(BUILD_CC, gcc cc) | |
307 | fi | |
7c713e28 | 308 | AC_PROG_CPP |
ff3d7ed3 RM |
309 | AC_CHECK_TOOL(AR, ar) |
310 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
28f540f4 | 311 | |
b8dc6a10 | 312 | AC_CACHE_CHECK(for signed size_t type, libc_cv_signed_size_t, [dnl |
28f540f4 RM |
313 | echo '#include <stddef.h> |
314 | FOOBAR __SIZE_TYPE__ FOOBAR' > conftest.c | |
315 | if eval "$ac_cpp conftest.c 2>/dev/null" \ | |
316 | | grep '^FOOBAR.*unsigned.*FOOBAR$' >/dev/null; then | |
317 | libc_cv_signed_size_t=no | |
318 | else | |
319 | libc_cv_signed_size_t=yes | |
320 | fi | |
321 | rm -f conftest*]) | |
28f540f4 RM |
322 | if test $libc_cv_signed_size_t = yes; then |
323 | dnl Do this by hand instead of AC_DEFINE so can add #undef to avoid warnings. | |
324 | cat >> confdefs.h <<\EOF | |
325 | #undef __SIZE_TYPE__ | |
326 | #define __SIZE_TYPE__ unsigned | |
327 | EOF | |
328 | fi | |
329 | ||
b8dc6a10 | 330 | AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl |
28f540f4 RM |
331 | AC_TRY_COMPILE(dnl |
332 | [#define __need_size_t | |
333 | #define __need_wchar_t | |
334 | #include <stddef.h> | |
335 | #define __need_NULL | |
336 | #include <stddef.h>], [size_t size; wchar_t wchar; | |
337 | #ifdef offsetof | |
338 | #error stddef.h ignored __need_* | |
339 | #endif | |
340 | if (&size == NULL || &wchar == NULL) abort ();], | |
341 | libc_cv_friendly_stddef=yes, | |
342 | libc_cv_friendly_stddef=no)]) | |
28f540f4 RM |
343 | if test $libc_cv_friendly_stddef = yes; then |
344 | config_vars="$config_vars | |
345 | override stddef.h = # The installed <stddef.h> seems to be libc-friendly." | |
346 | fi | |
347 | ||
b8dc6a10 RM |
348 | AC_CACHE_CHECK(whether we need to use -P to assemble .S files, |
349 | libc_cv_need_minus_P, [dnl | |
28f540f4 RM |
350 | cat > conftest.S <<EOF |
351 | #include "confdefs.h" | |
352 | /* Nothing whatsoever. */ | |
353 | EOF | |
354 | if ${CC-cc} $CFLAGS -c conftest.S 2>/dev/null; then | |
355 | libc_cv_need_minus_P=no | |
356 | else | |
357 | libc_cv_need_minus_P=yes | |
358 | fi | |
359 | rm -f conftest*]) | |
28f540f4 RM |
360 | if test $libc_cv_need_minus_P = yes; then |
361 | config_vars="$config_vars | |
362 | asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." | |
363 | fi | |
364 | ||
b8dc6a10 RM |
365 | AC_CACHE_CHECK(for assembler global-symbol directive, |
366 | libc_cv_asm_global_directive, [dnl | |
9a70fcab UD |
367 | libc_cv_asm_global_directive=UNKNOWN |
368 | for ac_globl in .globl .global; do | |
369 | cat > conftest.s <<EOF | |
370 | .text | |
371 | ${ac_globl} foo | |
372 | foo: .long 0 | |
373 | EOF | |
374 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
375 | libc_cv_asm_global_directive=${ac_globl} | |
376 | fi | |
377 | rm -f conftest* | |
378 | test $libc_cv_asm_global_directive != UNKNOWN && break | |
379 | done]) | |
9a70fcab UD |
380 | if test $libc_cv_asm_global_directive = UNKNOWN; then |
381 | AC_MSG_ERROR(cannot determine asm global directive) | |
382 | else | |
383 | AC_DEFINE_UNQUOTED(ASM_GLOBAL_DIRECTIVE, ${libc_cv_asm_global_directive}) | |
384 | fi | |
385 | ||
b8dc6a10 | 386 | AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl |
9a70fcab | 387 | cat > conftest.s <<EOF |
e215c478 RM |
388 | .text |
389 | foo: .long 0 | |
df2a0c93 | 390 | .set glibc_conftest_frobozz,foo |
9a70fcab | 391 | $libc_cv_asm_global_directive glibc_conftest_frobozz |
e215c478 | 392 | EOF |
df2a0c93 RM |
393 | # The alpha-dec-osf1 assembler gives only a warning for `.set' |
394 | # (but it doesn't work), so we must do a linking check to be sure. | |
395 | cat > conftest1.c <<\EOF | |
396 | extern int glibc_conftest_frobozz; | |
397 | main () { printf ("%d\n", glibc_conftest_frobozz); } | |
398 | EOF | |
399 | if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ | |
cb2f05ed | 400 | -o conftest conftest.s conftest1.c 1>&AC_FD_CC 2>&AC_FD_CC; then |
e215c478 RM |
401 | libc_cv_asm_set_directive=yes |
402 | else | |
403 | libc_cv_asm_set_directive=no | |
404 | fi | |
65b3cbcb | 405 | rm -f conftest*]) |
e215c478 RM |
406 | if test $libc_cv_asm_set_directive = yes; then |
407 | AC_DEFINE(HAVE_ASM_SET_DIRECTIVE) | |
408 | fi | |
409 | ||
b8dc6a10 RM |
410 | if test $elf != yes; then |
411 | AC_CACHE_CHECK(for .init and .fini sections, libc_cv_have_initfini, | |
412 | [AC_TRY_COMPILE(, [asm (".section .init"); | |
84724245 RM |
413 | asm (".section .fini"); |
414 | asm (".text");], | |
b8dc6a10 RM |
415 | libc_cv_have_initfini=yes, |
416 | libc_cv_have_initfini=no)]) | |
417 | AC_SUBST(libc_cv_have_initfini)dnl | |
418 | if test $libc_cv_have_initfini = yes; then | |
419 | AC_DEFINE(HAVE_INITFINI) | |
420 | fi | |
421 | fi | |
e215c478 | 422 | |
c224a18a RM |
423 | if test $elf = yes; then |
424 | libc_cv_asm_underscores=no | |
425 | else | |
426 | AC_CACHE_CHECK(for _ prefix on C symbol names, libc_cv_asm_underscores, | |
857fa1b8 RM |
427 | [AC_TRY_LINK([asm ("_glibc_foobar:");], [glibc_foobar ();], |
428 | libc_cv_asm_underscores=yes, | |
429 | libc_cv_asm_underscores=no)]) | |
c224a18a RM |
430 | fi |
431 | if test $libc_cv_asm_underscores = no; then | |
432 | AC_DEFINE(NO_UNDERSCORES) | |
433 | fi | |
434 | ||
435 | if test $elf = yes; then | |
436 | libc_cv_weak_symbols=yes | |
437 | libc_cv_asm_weak_directive=yes | |
438 | libc_cv_asm_weakext_directive=no | |
439 | else | |
440 | AC_CACHE_CHECK(for assembler .weak directive, libc_cv_asm_weak_directive, | |
441 | [dnl | |
442 | cat > conftest.s <<EOF | |
443 | .text | |
444 | ${libc_cv_asm_global_directive} foo | |
445 | foo: .long 0 | |
446 | .weak foo | |
447 | .weak bar; bar = foo | |
448 | EOF | |
449 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
450 | libc_cv_asm_weak_directive=yes | |
451 | else | |
452 | libc_cv_asm_weak_directive=no | |
453 | fi | |
454 | rm -f conftest*]) | |
455 | ||
c8cf0b14 | 456 | if test $libc_cv_asm_weak_directive = no; then |
c224a18a RM |
457 | AC_CACHE_CHECK(for assembler .weakext directive, |
458 | libc_cv_asm_weakext_directive, | |
459 | [dnl | |
460 | cat > conftest.s <<EOF | |
461 | .text | |
462 | ${libc_cv_asm_global_directive} foo | |
463 | foo: .long 0 | |
464 | .weakext foo | |
a1470b6f | 465 | .weakext foo, bar |
c224a18a RM |
466 | EOF |
467 | if ${CC-cc} $CFLAGS -c conftest.s 2>/dev/null; then | |
468 | libc_cv_asm_weakext_directive=yes | |
469 | else | |
470 | libc_cv_asm_weakext_directive=no | |
471 | fi | |
472 | rm -f conftest*]) | |
473 | ||
474 | fi # no .weak | |
475 | fi # not ELF | |
476 | ||
ffcf9634 | 477 | if test $libc_cv_asm_weak_directive = yes; then |
c224a18a | 478 | AC_DEFINE(HAVE_ASM_WEAK_DIRECTIVE) |
ffcf9634 | 479 | elif test $libc_cv_asm_weakext_directive = yes; then |
c224a18a RM |
480 | AC_DEFINE(HAVE_ASM_WEAKEXT_DIRECTIVE) |
481 | fi | |
482 | ||
a641835a RM |
483 | AC_CACHE_CHECK(for ld --no-whole-archive, libc_cv_ld_no_whole_archive, [dnl |
484 | cat > conftest.c <<\EOF | |
5f0e6fc7 | 485 | _start () {} |
a641835a | 486 | EOF |
dcea62dd RM |
487 | dnl No \ in command here because it ends up inside ''. |
488 | if AC_TRY_COMMAND([${CC-cc} $CFLAGS | |
489 | -nostdlib -nostartfiles -Wl,--no-whole-archive | |
5f0e6fc7 | 490 | -o conftest conftest.c]); then |
a641835a RM |
491 | libc_cv_ld_no_whole_archive=yes |
492 | else | |
493 | libc_cv_ld_no_whole_archive=no | |
494 | fi | |
495 | rm -f conftest*]) | |
496 | AC_SUBST(libc_cv_ld_no_whole_archive)dnl | |
497 | ||
c224a18a RM |
498 | ### End of automated tests. |
499 | ### Now run sysdeps configure fragments. | |
500 | ||
28f540f4 RM |
501 | # sysdeps configure fragments may set these with files to be linked below. |
502 | libc_link_dests= | |
503 | libc_link_sources= | |
504 | ||
505 | # Iterate over all the sysdep directories we will use, running their | |
506 | # configure fragments, and looking for a uname implementation. | |
507 | uname= | |
508 | for dir in $sysnames; do | |
509 | if test -r $sysdep_dir/$dir/configure; then | |
510 | AC_MSG_RESULT(running configure fragment for $dir) | |
511 | . $sysdep_dir/$dir/configure | |
512 | fi | |
4ca84cff | 513 | [ |
28f540f4 | 514 | if test -z "$uname"; then |
b86199fb RM |
515 | if test -r $sysdep_dir/$dir/uname.c || |
516 | test -r $sysdep_dir/$dir/uname.S || | |
517 | { test -r $sysdep_dir/$dir/syscalls.list && | |
518 | grep '^uname[ ]' $sysdep_dir/$dir/syscalls.list >/dev/null; }; then | |
519 | uname=$dir | |
4ca84cff | 520 | fi |
28f540f4 | 521 | fi |
4ca84cff | 522 | ]dnl |
28f540f4 RM |
523 | done |
524 | ||
525 | AC_LINK_FILES(`echo $libc_link_sources`, `echo $libc_link_dests`) | |
526 | ||
527 | # If we will use the generic uname implementation, we must figure out what | |
528 | # it will say by examining the system, and write the results in config-name.h. | |
529 | if test "$uname" = generic; then | |
530 | ||
531 | changequote(,)dnl | |
532 | uname_sysname=`echo $config_os | sed 's/[0-9.]*$//'` | |
533 | changequote([,])dnl | |
534 | if test $uname_sysname != $config_os; then | |
535 | config_release=`echo $config_os | sed s/$uname_sysname//` | |
536 | fi | |
537 | dnl | |
538 | AC_DEFUN(LIBC_KERNEL_ID, [dnl | |
539 | if test -r /vmunix; then | |
540 | kernel_id=`strings /vmunix | grep UNIX` | |
541 | elif test -r /dynix; then | |
542 | kernel_id=`strings /dynix | grep DYNIX` | |
543 | else | |
544 | kernel_id= | |
545 | fi | |
546 | ])dnl | |
547 | ||
b8dc6a10 | 548 | AC_CACHE_CHECK(OS release for uname, libc_cv_uname_release, [dnl |
28f540f4 RM |
549 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
550 | changequote(,)dnl | |
551 | kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` | |
552 | changequote([,])dnl | |
553 | if test x`echo "$config_release" | sed "s/^$kernel_release//"` \ | |
554 | != x$config_release; then | |
555 | # The configuration release is a substring of the kernel release. | |
556 | libc_cv_uname_release=$kernel_release | |
557 | elif test x$config_release != x; then | |
558 | libc_cv_uname_release=$config_release | |
559 | elif test x$kernel_release != x; then | |
560 | libc_cv_uname_release=$kernel_release | |
561 | else | |
562 | libc_cv_uname_release=unknown | |
563 | fi]) | |
28f540f4 RM |
564 | uname_release="$libc_cv_uname_release" |
565 | ||
b8dc6a10 | 566 | AC_CACHE_CHECK(OS version for uname, libc_cv_uname_version, [dnl |
28f540f4 RM |
567 | AC_REQUIRE([LIBC_KERNEL_ID])dnl |
568 | changequote(,)dnl | |
569 | kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` | |
570 | changequote([,])dnl | |
571 | if test -n "$kernel_version"; then | |
572 | libc_cv_uname_version="$kernel_version" | |
573 | else | |
574 | libc_cv_uname_version=unknown | |
575 | fi]) | |
28f540f4 RM |
576 | uname_version="$libc_cv_uname_version" |
577 | ||
578 | AC_SUBST(uname_sysname) AC_SUBST(uname_release) AC_SUBST(uname_version)dnl | |
579 | config_uname=config-name.h:config-name.in | |
580 | else | |
581 | # For non-generic uname, we don't need to create config-name.h at all. | |
582 | config_uname= | |
583 | fi | |
584 | ||
96aa2d94 RM |
585 | AC_MSG_CHECKING(stdio selection) |
586 | AC_SUBST(stdio) | |
587 | case $stdio in | |
588 | libio) AC_DEFINE(USE_IN_LIBIO) ;; | |
589 | default) stdio=stdio ;; | |
590 | esac | |
591 | AC_MSG_RESULT($stdio) | |
592 | ||
c224a18a | 593 | AC_SUBST(gnu_ld) AC_SUBST(gnu_as) AC_SUBST(elf) |
28f540f4 RM |
594 | if test $gnu_ld = yes; then |
595 | AC_DEFINE(HAVE_GNU_LD) | |
596 | fi | |
597 | if test $gnu_as = yes; then | |
598 | AC_DEFINE(HAVE_GNU_AS) | |
599 | fi | |
600 | if test $elf = yes; then | |
601 | AC_DEFINE(HAVE_ELF) | |
602 | fi | |
28f540f4 | 603 | |
ff3d7ed3 RM |
604 | AC_SUBST(shared) |
605 | if test $shared = default; then | |
606 | if test $gnu_ld = yes; then | |
607 | shared=$elf | |
608 | fi | |
609 | fi | |
610 | AC_SUBST(profile) | |
611 | AC_SUBST(omitfp) | |
612 | ||
28f540f4 RM |
613 | if test "`(cd $srcdir; pwd)`" = "`pwd`"; then |
614 | config_makefile= | |
615 | else | |
616 | config_makefile=Makefile | |
617 | fi | |
618 | ||
619 | AC_OUTPUT(config.make ${config_makefile} ${config_uname}, , | |
620 | [echo '$config_vars' >> config.make]) |