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Commit | Line | Data |
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b2dad0e3 BK |
1 | dnl |
2 | dnl Initialize configure bits. | |
3 | dnl | |
4 | dnl Define OPTLEVEL='-O2' if new inlining code present. | |
5 | dnl | |
6 | dnl GLIBCPP_CONFIGURE | |
7 | AC_DEFUN(GLIBCPP_CONFIGURE, [ | |
8 | dnl Default to --enable-multilib | |
9 | AC_ARG_ENABLE(multilib, | |
10 | [ --enable-multilib build hella library versions (default)], | |
11 | [case "${enableval}" in | |
12 | yes) multilib=yes ;; | |
13 | no) multilib=no ;; | |
14 | *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; | |
15 | esac], [multilib=yes])dnl | |
16 | ||
17 | dnl We may get other options which we dont document: | |
18 | dnl --with-target-subdir, --with-multisrctop, --with-multisubdir | |
19 | if test "[$]{srcdir}" = "."; then | |
20 | if test "[$]{with_target_subdir}" != "."; then | |
21 | glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}../$1" | |
22 | else | |
23 | glibcpp_basedir="[$]{srcdir}/[$]{with_multisrctop}$1" | |
24 | fi | |
25 | else | |
26 | glibcpp_basedir="[$]{srcdir}/$1" | |
27 | fi | |
28 | AC_SUBST(glibcpp_basedir) | |
29 | ||
b2dad0e3 BK |
30 | AM_INIT_AUTOMAKE(libstdc++, 2.90.8) |
31 | ||
28861379 BK |
32 | # Never versions of autoconf add an underscore to these functions. |
33 | # Prevent future problems ... | |
34 | ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) | |
35 | ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) | |
36 | ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) | |
37 | ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) | |
5780a46b BK |
38 | |
39 | # AC_PROG_CC | |
40 | ||
b2dad0e3 BK |
41 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is |
42 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
43 | # are probably using a cross compiler, which will not be able to fully | |
44 | # link an executable. This should really be fixed in autoconf | |
45 | # itself. | |
46 | ||
47 | AC_DEFUN(LIB_AC_PROG_CC, | |
48 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
49 | dnl Fool anybody using AC_PROG_CC. | |
50 | AC_PROVIDE([AC_PROG_CC]) | |
51 | AC_CHECK_PROG(CC, gcc, gcc) | |
52 | if test -z "$CC"; then | |
53 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
54 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
55 | fi | |
56 | ||
57 | AC_PROG_CC_GNU | |
58 | ||
59 | if test $ac_cv_prog_gcc = yes; then | |
60 | GCC=yes | |
61 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
62 | dnl plays around with CFLAGS (such as to build both debugging and | |
63 | dnl normal versions of a library), tasteless as that idea is. | |
64 | ac_test_CFLAGS="${CFLAGS+set}" | |
65 | ac_save_CFLAGS="$CFLAGS" | |
66 | CFLAGS= | |
67 | AC_PROG_CC_G | |
68 | if test "$ac_test_CFLAGS" = set; then | |
69 | CFLAGS="$ac_save_CFLAGS" | |
70 | elif test $ac_cv_prog_cc_g = yes; then | |
71 | CFLAGS="-g -O2" | |
72 | else | |
73 | CFLAGS="-O2" | |
74 | fi | |
75 | else | |
76 | GCC= | |
77 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
78 | fi | |
79 | ]) | |
80 | ||
81 | LIB_AC_PROG_CC | |
82 | ||
5780a46b BK |
83 | # Can't just call these here as g++ requires libstc++ to be built.... |
84 | # AC_PROG_CXX | |
85 | ||
b2dad0e3 BK |
86 | # Likewise for AC_PROG_CXX. |
87 | AC_DEFUN(LIB_AC_PROG_CXX, | |
88 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
89 | dnl Fool anybody using AC_PROG_CXX. | |
90 | AC_PROVIDE([AC_PROG_CXX]) | |
de9aefe0 AO |
91 | # Use CXX_libstdcxx so that we do not cause CXX to be cached with the |
92 | # flags that come in CXX while configuring libstdc++. They're different | |
bb4127f8 MM |
93 | # from those used for all other target libraries. If CXX is set in |
94 | # the environment, respect that here. | |
95 | CXX_libstdcxx=$CXX | |
aa17a5f3 | 96 | AC_CHECK_PROGS(CXX_libstdcxx, $CCC c++ g++ gcc CC cxx cc++, gcc) |
de9aefe0 AO |
97 | CXX=$CXX_libstdcxx |
98 | AC_SUBST(CXX) | |
b2dad0e3 BK |
99 | test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) |
100 | ||
101 | AC_PROG_CXX_GNU | |
102 | ||
103 | if test $ac_cv_prog_gxx = yes; then | |
104 | GXX=yes | |
105 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
106 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
107 | dnl normal versions of a library), tasteless as that idea is. | |
108 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
109 | ac_save_CXXFLAGS="$CXXFLAGS" | |
110 | CXXFLAGS= | |
111 | AC_PROG_CXX_G | |
112 | if test "$ac_test_CXXFLAGS" = set; then | |
113 | CXXFLAGS="$ac_save_CXXFLAGS" | |
114 | elif test $ac_cv_prog_cxx_g = yes; then | |
115 | CXXFLAGS="-g -O2" | |
116 | else | |
117 | CXXFLAGS="-O2" | |
118 | fi | |
119 | else | |
120 | GXX= | |
121 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
122 | fi | |
123 | ]) | |
124 | ||
125 | LIB_AC_PROG_CXX | |
126 | ||
5780a46b BK |
127 | AC_CHECK_TOOL(AS, as) |
128 | AC_CHECK_TOOL(AR, ar) | |
129 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
130 | ||
131 | AC_PROG_INSTALL | |
b2dad0e3 | 132 | |
5780a46b | 133 | AM_MAINTAINER_MODE |
b2dad0e3 | 134 | |
5780a46b BK |
135 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, |
136 | # at least currently, we never actually build a program, so we never | |
137 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
138 | # fails, because we are probably configuring with a cross compiler | |
139 | # which cant create executables. So we include AC_EXEEXT to keep | |
140 | # automake happy, but we dont execute it, since we dont care about | |
15bcd79a | 141 | # the result. |
5780a46b BK |
142 | if false; then |
143 | AC_EXEEXT | |
144 | fi | |
b2dad0e3 | 145 | |
5780a46b | 146 | # configure.host sets the following important variables |
8b8ab21c BK |
147 | # glibcpp_cflags - host specific C compiler flags |
148 | # glibcpp_cxxflags - host specific C++ compiler flags | |
5780a46b BK |
149 | glibcpp_cflags= |
150 | glibcpp_cxxflags= | |
b2dad0e3 | 151 | |
5780a46b BK |
152 | . [$]{glibcpp_basedir}/configure.host |
153 | ||
154 | case [$]{glibcpp_basedir} in | |
6f87af20 | 155 | /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; |
5780a46b BK |
156 | *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; |
157 | esac | |
b2dad0e3 | 158 | |
d0941a31 PE |
159 | # This does for the target what configure.host does for the host. In |
160 | # addition to modifying the same flags, it also sets up symlinks. | |
161 | GLIBCPP_CHECK_TARGET | |
162 | ||
5780a46b BK |
163 | GLIBCPP_CFLAGS="[$]{glibcpp_cflags}" |
164 | GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}" | |
165 | AC_SUBST(GLIBCPP_CFLAGS) | |
166 | AC_SUBST(GLIBCPP_CXXFLAGS) | |
b2dad0e3 BK |
167 | ]) |
168 | ||
169 | ||
170 | dnl | |
8bd636c5 | 171 | dnl Check to see if g++ can compile this library, and if so, if any version- |
c470c17d BK |
172 | dnl specific precautions need to be taken. |
173 | dnl | |
174 | dnl GLIBCPP_CHECK_COMPILER_VERSION | |
175 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ | |
44382959 BK |
176 | if test ! -f stamp-sanity-compiler; then |
177 | AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) | |
178 | AC_LANG_SAVE | |
179 | AC_LANG_CPLUSPLUS | |
180 | AC_EGREP_CPP(ok, [ | |
181 | #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) | |
c470c17d BK |
182 | ok |
183 | #endif | |
8b8ab21c | 184 | ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to gcc-2.95 or above])) |
44382959 | 185 | AC_LANG_RESTORE |
c470c17d | 186 | AC_MSG_RESULT($gpp_satisfactory) |
44382959 BK |
187 | touch stamp-sanity-compiler |
188 | fi | |
c470c17d BK |
189 | ]) |
190 | ||
191 | ||
192 | dnl | |
193 | dnl Test for newer compiler features, or features that are present in newer | |
d3a12960 BK |
194 | dnl compiler version but not older compiler versions should be placed |
195 | dnl here. | |
b2dad0e3 | 196 | dnl |
c470c17d BK |
197 | dnl Define WFMT_FLAGS='-fdiagnostics-show-location=once' if possible |
198 | dnl | |
7f586614 BK |
199 | dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the |
200 | dnl new inlining code or the new system_header pragma will die on -Werror. | |
201 | dnl Leave it out by default and use maint-mode to use it. | |
b2dad0e3 | 202 | dnl |
c470c17d BK |
203 | dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
204 | dnl compiler supports it. | |
205 | dnl GLIBCPP_CHECK_COMPILER_FEATURES | |
206 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ | |
a4e99046 PE |
207 | # All these tests are for C++; save the language and the compiler flags. |
208 | # The CXXFLAGS thing is suspicious, but based on similar bits | |
209 | # found in GLIBCPP_CONFIGURE. | |
210 | AC_LANG_SAVE | |
211 | AC_LANG_CPLUSPLUS | |
212 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
213 | ac_save_CXXFLAGS="$CXXFLAGS" | |
a4e99046 | 214 | |
7f586614 BK |
215 | # Check for maintainer-mode bits. |
216 | if test x"$USE_MAINTAINER_MODE" = xno; then | |
217 | WERROR='' | |
8bd636c5 | 218 | else |
7f586614 | 219 | WERROR='-Werror' |
8bd636c5 PE |
220 | fi |
221 | ||
d3a12960 BK |
222 | # Check for more sophisticated diagnostic control. |
223 | AC_MSG_CHECKING([for g++ that supports -fdiagnostics-show-location=once]) | |
0517cb99 | 224 | CXXFLAGS='-Werror -fdiagnostics-show-location=once' |
a4e99046 PE |
225 | AC_TRY_COMPILE(, [int foo; |
226 | ], [ac_gabydiags=yes], [ac_gabydiags=no]) | |
227 | if test "$ac_test_CXXFLAGS" = set; then | |
228 | CXXFLAGS="$ac_save_CXXFLAGS" | |
229 | else | |
230 | # this is the suspicious part | |
231 | CXXFLAGS='' | |
232 | fi | |
6abd2230 | 233 | if test x"$ac_gabydiags" = x"yes"; then |
c470c17d | 234 | WFMT_FLAGS='-fdiagnostics-show-location=once' |
a4e99046 PE |
235 | fi |
236 | AC_MSG_RESULT($ac_gabydiags) | |
237 | ||
c470c17d BK |
238 | # Check for -ffunction-sections -fdata-sections |
239 | AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) | |
0517cb99 | 240 | CXXFLAGS='-Werror -ffunction-sections -fdata-sections' |
c470c17d BK |
241 | AC_TRY_COMPILE(, [int foo; |
242 | ], [ac_fdsections=yes], [ac_fdsections=no]) | |
243 | if test "$ac_test_CXXFLAGS" = set; then | |
244 | CXXFLAGS="$ac_save_CXXFLAGS" | |
245 | else | |
246 | # this is the suspicious part | |
247 | CXXFLAGS='' | |
248 | fi | |
4c07386b | 249 | if test x"$ac_fdsections" = x"yes" && test x"$enable_debug" = x"no"; then |
c470c17d BK |
250 | SECTION_FLAGS='-ffunction-sections -fdata-sections' |
251 | fi | |
252 | AC_MSG_RESULT($ac_fdsections) | |
253 | ||
a4e99046 | 254 | AC_LANG_RESTORE |
8bd636c5 | 255 | AC_SUBST(WERROR) |
c470c17d BK |
256 | AC_SUBST(WFMT_FLAGS) |
257 | AC_SUBST(SECTION_FLAGS) | |
b2dad0e3 BK |
258 | ]) |
259 | ||
c470c17d BK |
260 | |
261 | dnl | |
421173e6 PE |
262 | dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
263 | dnl the native linker is in use, all variables will be defined to something | |
264 | dnl safe (like an empty string). | |
265 | dnl | |
266 | dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. | |
267 | dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. | |
c470c17d | 268 | dnl |
c470c17d BK |
269 | dnl GLIBCPP_CHECK_LINKER_FEATURES |
270 | AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ | |
421173e6 PE |
271 | # If we're not using GNU ld, then there's no point in even trying these |
272 | # tests. Check for that first. We should have already tested for gld | |
273 | # by now (in libtool), but require it now just to be safe... | |
a9117427 BK |
274 | SECTION_LDFLAGS='' |
275 | OPT_LDFLAGS='' | |
421173e6 | 276 | AC_REQUIRE([AC_PROG_LD]) |
5bd17d39 PE |
277 | |
278 | # Set --gc-sections. | |
f4c79fef | 279 | if test "$ac_cv_prog_gnu_ld" = "notbroken"; then |
a9117427 | 280 | # GNU ld it is! Joy and bunny rabbits! |
421173e6 PE |
281 | |
282 | # All these tests are for C++; save the language and the compiler flags. | |
283 | # Need to do this so that g++ won't try to link in libstdc++ | |
284 | ac_test_CFLAGS="${CFLAGS+set}" | |
285 | ac_save_CFLAGS="$CFLAGS" | |
5bd17d39 | 286 | CFLAGS='-x c++ -Wl,--gc-sections' |
421173e6 PE |
287 | |
288 | # Check for -Wl,--gc-sections | |
e466dc8a BK |
289 | # XXX This test is broken at the moment, as symbols required for |
290 | # linking are now in libsupc++ (not built yet.....). In addition, | |
a9117427 BK |
291 | # this test has cored on solaris in the past. In addition, |
292 | # --gc-sections doesn't really work at the moment (keeps on discarding | |
293 | # used sections, first .eh_frame and now some of the glibc sections for | |
294 | # iconv). Bzzzzt. Thanks for playing, maybe next time. | |
421173e6 PE |
295 | AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
296 | AC_TRY_RUN([ | |
297 | int main(void) | |
298 | { | |
a9117427 BK |
299 | try { throw 1; } |
300 | catch (...) { }; | |
421173e6 PE |
301 | return 0; |
302 | } | |
e466dc8a | 303 | ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes]) |
421173e6 PE |
304 | if test "$ac_test_CFLAGS" = set; then |
305 | CFLAGS="$ac_save_CFLAGS" | |
306 | else | |
307 | # this is the suspicious part | |
308 | CFLAGS='' | |
309 | fi | |
310 | if test "$ac_sectionLDflags" = "yes"; then | |
5bd17d39 | 311 | SECTION_LDFLAGS='-Wl,--gc-sections' |
421173e6 PE |
312 | fi |
313 | AC_MSG_RESULT($ac_sectionLDflags) | |
5bd17d39 | 314 | fi |
a9117427 | 315 | |
5bd17d39 | 316 | # Set linker optimization flags. |
4c07386b | 317 | if test x"$ac_cv_prog_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then |
421173e6 | 318 | OPT_LDFLAGS='-Wl,-O1' |
421173e6 | 319 | fi |
5bd17d39 | 320 | |
c470c17d | 321 | AC_SUBST(SECTION_LDFLAGS) |
421173e6 | 322 | AC_SUBST(OPT_LDFLAGS) |
c470c17d BK |
323 | ]) |
324 | ||
325 | ||
b2dad0e3 | 326 | dnl |
11fc1858 | 327 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
328 | dnl 1) declared when using the c++ compiler |
329 | dnl 2) has "C" linkage | |
330 | dnl | |
331 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
332 | dnl | |
333 | dnl argument 1 is name of function to check | |
334 | dnl | |
335 | dnl ASSUMES argument is a math function with ONE parameter | |
336 | dnl | |
337 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 | |
338 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ | |
38bd7296 | 339 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
340 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
341 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
342 | AC_LANG_SAVE | |
343 | AC_LANG_CPLUSPLUS | |
344 | AC_TRY_COMPILE([#include <math.h>], | |
345 | [ $1(0);], | |
346 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
347 | AC_LANG_RESTORE | |
348 | ]) | |
349 | fi | |
421173e6 PE |
350 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
351 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
38bd7296 BK |
352 | AC_CHECK_FUNCS($1) |
353 | fi | |
354 | ]) | |
355 | ||
20b11783 MM |
356 | dnl |
357 | dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of | |
358 | dnl of functions at once. It's an all-or-nothing check -- either | |
9b8fd32c | 359 | dnl HAVE_XYZ is defined for each of the functions, or for none of them. |
20b11783 MM |
360 | dnl Doing it this way saves significant configure time. |
361 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [ | |
362 | AC_MSG_CHECKING([for $1 functions]) | |
363 | AC_CACHE_VAL(glibcpp_cv_func_$2_use, [ | |
364 | AC_LANG_SAVE | |
365 | AC_LANG_CPLUSPLUS | |
366 | AC_TRY_COMPILE([#include <math.h>], | |
367 | [ `for x in $3; do echo "$x (0);"; done` ], | |
9b8fd32c PE |
368 | [glibcpp_cv_func_$2_use=yes], |
369 | [glibcpp_cv_func_$2_use=no]) | |
20b11783 MM |
370 | AC_LANG_RESTORE]) |
371 | AC_MSG_RESULT($glibcpp_cv_func_$2_use) | |
372 | if test x$glibcpp_cv_func_$2_use = x"yes"; then | |
373 | AC_CHECK_FUNCS($3) | |
374 | fi | |
375 | ]) | |
38bd7296 BK |
376 | |
377 | dnl | |
11fc1858 | 378 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
379 | dnl 1) declared when using the c++ compiler |
380 | dnl 2) has "C" linkage | |
381 | dnl | |
382 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
383 | dnl | |
384 | dnl argument 1 is name of function to check | |
385 | dnl | |
386 | dnl ASSUMES argument is a math function with TWO parameters | |
387 | dnl | |
388 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 | |
389 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ | |
38bd7296 | 390 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
391 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
392 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
393 | AC_LANG_SAVE | |
394 | AC_LANG_CPLUSPLUS | |
395 | AC_TRY_COMPILE([#include <math.h>], | |
396 | [ $1(0, 0);], | |
397 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
398 | AC_LANG_RESTORE | |
399 | ]) | |
400 | fi | |
421173e6 PE |
401 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
402 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
38bd7296 BK |
403 | AC_CHECK_FUNCS($1) |
404 | fi | |
405 | ]) | |
406 | ||
407 | ||
408 | dnl | |
11fc1858 | 409 | dnl Check to see if the (math function) argument passed is |
38bd7296 BK |
410 | dnl 1) declared when using the c++ compiler |
411 | dnl 2) has "C" linkage | |
412 | dnl | |
413 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
414 | dnl | |
415 | dnl argument 1 is name of function to check | |
416 | dnl | |
417 | dnl ASSUMES argument is a math function with THREE parameters | |
418 | dnl | |
419 | dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 | |
420 | AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ | |
38bd7296 | 421 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
422 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
423 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
424 | AC_LANG_SAVE | |
425 | AC_LANG_CPLUSPLUS | |
426 | AC_TRY_COMPILE([#include <math.h>], | |
427 | [ $1(0, 0, 0);], | |
428 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
429 | AC_LANG_RESTORE | |
430 | ]) | |
431 | fi | |
421173e6 PE |
432 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
433 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
38bd7296 BK |
434 | AC_CHECK_FUNCS($1) |
435 | fi | |
436 | ]) | |
437 | ||
438 | ||
5bd17d39 PE |
439 | dnl |
440 | dnl Check to see if the (stdlib function) argument passed is | |
441 | dnl 1) declared when using the c++ compiler | |
442 | dnl 2) has "C" linkage | |
443 | dnl | |
444 | dnl Define HAVE_STRTOLD if "strtold" is declared and links | |
445 | dnl Define HAVE_STRTOF if "strtof" is declared and links | |
446 | dnl | |
447 | dnl argument 1 is name of function to check | |
448 | dnl | |
449 | dnl ASSUMES argument is a math function with TWO parameters | |
450 | dnl | |
451 | dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2 | |
452 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ | |
453 | AC_MSG_CHECKING([for $1 declaration]) | |
f84ef7fb PE |
454 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
455 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
456 | AC_LANG_SAVE | |
457 | AC_LANG_CPLUSPLUS | |
458 | AC_TRY_COMPILE([#include <stdlib.h>], | |
459 | [ $1(0, 0);], | |
460 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
461 | AC_LANG_RESTORE | |
462 | ]) | |
463 | fi | |
5bd17d39 PE |
464 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
465 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
466 | AC_CHECK_FUNCS($1) | |
467 | fi | |
468 | ]) | |
469 | ||
470 | ||
11fc1858 BK |
471 | dnl |
472 | dnl Because the builtins are picky picky picky about the arguments they take, | |
473 | dnl do an explict linkage tests here. | |
474 | dnl Check to see if the (math function) argument passed is | |
475 | dnl 1) declared when using the c++ compiler | |
476 | dnl 2) has "C" linkage | |
477 | dnl | |
478 | dnl Define HAVE_CARGF etc if "cargf" is declared and links | |
479 | dnl | |
480 | dnl argument 1 is name of function to check | |
481 | dnl | |
482 | dnl ASSUMES argument is a math function with ONE parameter | |
483 | dnl | |
484 | dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 | |
485 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ | |
11fc1858 | 486 | AC_MSG_CHECKING([for $1 declaration]) |
f84ef7fb PE |
487 | if test x${glibcpp_cv_func_$1_use+set} != xset; then |
488 | AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ | |
489 | AC_LANG_SAVE | |
490 | AC_LANG_CPLUSPLUS | |
491 | AC_TRY_COMPILE([#include <math.h>], | |
492 | [ $1(0);], | |
493 | [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) | |
494 | AC_LANG_RESTORE | |
495 | ]) | |
496 | fi | |
421173e6 PE |
497 | AC_MSG_RESULT($glibcpp_cv_func_$1_use) |
498 | if test x$glibcpp_cv_func_$1_use = x"yes"; then | |
11fc1858 | 499 | AC_MSG_CHECKING([for $1 linkage]) |
f84ef7fb PE |
500 | if test x${glibcpp_cv_func_$1_link+set} != xset; then |
501 | AC_CACHE_VAL(glibcpp_cv_func_$1_link, [ | |
502 | AC_TRY_LINK([#include <math.h>], | |
503 | [ $1(0);], | |
504 | [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no]) | |
505 | ]) | |
506 | fi | |
421173e6 PE |
507 | AC_MSG_RESULT($glibcpp_cv_func_$1_link) |
508 | if test x$glibcpp_cv_func_$1_link = x"yes"; then | |
11fc1858 BK |
509 | ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` |
510 | AC_DEFINE_UNQUOTED(${ac_tr_func}) | |
511 | fi | |
512 | fi | |
513 | ]) | |
514 | ||
515 | ||
516 | dnl | |
517 | dnl Check to see what builtin math functions are supported | |
518 | dnl | |
519 | dnl check for __builtin_abs | |
520 | dnl check for __builtin_fabsf | |
521 | dnl check for __builtin_fabs | |
522 | dnl check for __builtin_fabl | |
523 | dnl check for __builtin_labs | |
524 | dnl check for __builtin_sqrtf | |
525 | dnl check for __builtin_sqrtl | |
526 | dnl check for __builtin_fsqrt | |
527 | dnl check for __builtin_sinf | |
528 | dnl check for __builtin_sin | |
529 | dnl check for __builtin_sinl | |
530 | dnl check for __builtin_cosf | |
531 | dnl check for __builtin_cos | |
532 | dnl check for __builtin_cosl | |
533 | dnl | |
534 | dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT | |
535 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ | |
536 | dnl Test for builtin math functions. | |
537 | dnl These are made in gcc/c-common.c | |
538 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) | |
539 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) | |
540 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) | |
541 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) | |
542 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) | |
543 | ||
544 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) | |
545 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fsqrt) | |
546 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) | |
547 | ||
548 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) | |
549 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) | |
550 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) | |
551 | ||
552 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) | |
553 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) | |
554 | GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) | |
555 | ||
556 | dnl There is, without a doubt, a more elegant way to have these | |
557 | dnl names exported so that they won't be stripped out of acconfig.h by | |
558 | dnl autoheader. I leave this as an exercise to somebody less frustrated | |
559 | dnl than I.... please email the libstdc++ list if you can figure out a | |
560 | dnl more elegant approach (see autoconf/acgen.m4 and specifically | |
561 | dnl AC_CHECK_FUNC for things to steal.) | |
562 | dummyvar=no | |
563 | if test x$dummyvar = x"yes"; then | |
564 | AC_DEFINE(HAVE___BUILTIN_ABS) | |
565 | AC_DEFINE(HAVE___BUILTIN_LABS) | |
566 | AC_DEFINE(HAVE___BUILTIN_COS) | |
567 | AC_DEFINE(HAVE___BUILTIN_COSF) | |
568 | AC_DEFINE(HAVE___BUILTIN_COSL) | |
569 | AC_DEFINE(HAVE___BUILTIN_FABS) | |
570 | AC_DEFINE(HAVE___BUILTIN_FABSF) | |
571 | AC_DEFINE(HAVE___BUILTIN_FABSL) | |
572 | AC_DEFINE(HAVE___BUILTIN_SIN) | |
573 | AC_DEFINE(HAVE___BUILTIN_SINF) | |
574 | AC_DEFINE(HAVE___BUILTIN_SINL) | |
575 | AC_DEFINE(HAVE___BUILTIN_FSQRT) | |
576 | AC_DEFINE(HAVE___BUILTIN_SQRTF) | |
577 | AC_DEFINE(HAVE___BUILTIN_SQRTL) | |
578 | fi | |
579 | ]) | |
580 | ||
581 | ||
5bd17d39 PE |
582 | dnl |
583 | dnl Check to see what the underlying c library | |
584 | dnl These checks need to do two things: | |
585 | dnl 1) make sure the name is declared when using the c++ compiler | |
586 | dnl 2) make sure the name has "C" linkage | |
587 | dnl This might seem like overkill but experience has shown that it's not... | |
588 | dnl | |
589 | dnl Define HAVE_STRTOF etc if "strtof" is found. | |
590 | dnl Define HAVE_STRTOLD etc if "strtold" is found. | |
591 | dnl | |
592 | dnl GLIBCPP_CHECK_STDLIB_SUPPORT | |
593 | AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [ | |
594 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
595 | ac_save_CXXFLAGS="$CXXFLAGS" | |
596 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' | |
597 | ||
598 | AC_CHECK_FUNCS(strtof) | |
599 | GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) | |
600 | ||
601 | CXXFLAGS="$ac_save_CXXFLAGS" | |
602 | ]) | |
603 | ||
604 | ||
2f103494 BK |
605 | dnl |
606 | dnl Check to see what the underlying c library or math library is like. | |
38bd7296 BK |
607 | dnl These checks need to do two things: |
608 | dnl 1) make sure the name is declared when using the c++ compiler | |
609 | dnl 2) make sure the name has "C" linkage | |
610 | dnl This might seem like overkill but experience has shown that it's not... | |
2f103494 BK |
611 | dnl |
612 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
613 | dnl | |
614 | dnl GLIBCPP_CHECK_MATH_SUPPORT | |
615 | AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ | |
38bd7296 BK |
616 | ac_test_CXXFLAGS="${CXXFLAGS+set}" |
617 | ac_save_CXXFLAGS="$CXXFLAGS" | |
4f76382d | 618 | CXXFLAGS='-fno-builtins -D_GNU_SOURCE' |
aac350aa BK |
619 | |
620 | dnl Check libm | |
2f103494 | 621 | AC_CHECK_LIB(m, sin, libm="-lm") |
38bd7296 | 622 | ac_save_LIBS="$LIBS" |
2f103494 BK |
623 | LIBS="$LIBS $libm" |
624 | ||
38bd7296 BK |
625 | dnl Check to see if certain C math functions exist. |
626 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) | |
627 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) | |
628 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) | |
629 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) | |
630 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) | |
631 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) | |
632 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) | |
633 | ||
634 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 635 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, |
9b8fd32c PE |
636 | float_trig, |
637 | acosf asinf atanf \ | |
20b11783 | 638 | cosf sinf tanf \ |
9b8fd32c | 639 | coshf sinhf tanhf) |
20b11783 | 640 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, |
9b8fd32c | 641 | float_round, |
20b11783 | 642 | ceilf floorf) |
38bd7296 BK |
643 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) |
644 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) | |
38bd7296 | 645 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) |
38bd7296 BK |
646 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) |
647 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) | |
648 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) | |
649 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) | |
650 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) | |
651 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) | |
652 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) | |
38bd7296 | 653 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) |
38bd7296 BK |
654 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) |
655 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) | |
656 | ||
657 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 658 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, |
9b8fd32c PE |
659 | long_double_trig, |
660 | acosl asinl atanl \ | |
20b11783 | 661 | cosl sinl tanl \ |
9b8fd32c | 662 | coshl sinhl tanhl) |
20b11783 | 663 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, |
9b8fd32c | 664 | long_double_round, |
20b11783 | 665 | ceill floorl) |
38bd7296 BK |
666 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) |
667 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) | |
11fc1858 | 668 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) |
38bd7296 | 669 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) |
38bd7296 BK |
670 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) |
671 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) | |
38bd7296 BK |
672 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) |
673 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) | |
674 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) | |
675 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) | |
676 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) | |
677 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) | |
678 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) | |
38bd7296 | 679 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) |
38bd7296 BK |
680 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) |
681 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) | |
682 | ||
683 | dnl Some runtimes have these functions with a preceding underscore. Please | |
684 | dnl keep this sync'd with the one above. And if you add any new symbol, | |
685 | dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. | |
686 | dnl Check to see if certain C math functions exist. | |
38bd7296 BK |
687 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinf) |
688 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnan) | |
689 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finite) | |
690 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysign) | |
691 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincos) | |
692 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fpclass) | |
693 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_qfpclass) | |
694 | ||
695 | dnl Check to see if basic C math functions have float versions. | |
20b11783 | 696 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, |
9b8fd32c PE |
697 | _float_trig, |
698 | _acosf _asinf _atanf \ | |
20b11783 | 699 | _cosf _sinf _tanf \ |
9b8fd32c | 700 | _coshf _sinhf _tanhf) |
20b11783 | 701 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, |
9b8fd32c | 702 | _float_round, |
20b11783 | 703 | _ceilf _floorf) |
38bd7296 BK |
704 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanf) |
705 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinff) | |
38bd7296 | 706 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsf) |
38bd7296 BK |
707 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodf) |
708 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpf) | |
709 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpf) | |
710 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logf) | |
711 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10f) | |
712 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modff) | |
713 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powf) | |
38bd7296 | 714 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtf) |
38bd7296 BK |
715 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosf) |
716 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitef) | |
717 | ||
718 | dnl Check to see if basic C math functions have long double versions. | |
20b11783 | 719 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, |
9b8fd32c PE |
720 | _long_double_trig, |
721 | _acosl _asinl _atanl \ | |
20b11783 | 722 | _cosl _sinl _tanl \ |
9b8fd32c | 723 | _coshl _sinhl _tanhl) |
20b11783 | 724 | GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, |
9b8fd32c | 725 | _long_double_round, |
20b11783 | 726 | _ceill _floorl) |
38bd7296 BK |
727 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isnanl) |
728 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_isinfl) | |
11fc1858 | 729 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_copysignl) |
38bd7296 | 730 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_atan2l) |
38bd7296 BK |
731 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_expl) |
732 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_fabsl) | |
38bd7296 BK |
733 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_fmodl) |
734 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_frexpl) | |
735 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_ldexpl) | |
736 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_logl) | |
737 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_log10l) | |
738 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_modfl) | |
739 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(_powl) | |
38bd7296 | 740 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_sqrtl) |
38bd7296 BK |
741 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(_sincosl) |
742 | GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(_finitel) | |
743 | ||
744 | LIBS="$ac_save_LIBS" | |
745 | CXXFLAGS="$ac_save_CXXFLAGS" | |
2f103494 BK |
746 | ]) |
747 | ||
748 | ||
749 | dnl | |
750 | dnl Check to see if there is native support for complex | |
751 | dnl | |
752 | dnl Don't compile bits in math/* if native support exits. | |
753 | dnl | |
8b8ab21c | 754 | dnl Define USE_COMPLEX_LONG_DOUBLE etc if "atan2l/copysignl" is found. |
2f103494 BK |
755 | dnl |
756 | dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT | |
757 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ | |
758 | dnl Check for complex versions of math functions of platform. | |
b4b2a487 | 759 | AC_CHECK_LIB(m, main) |
1228c7b6 | 760 | AC_REPLACE_MATHFUNCS(nan hypot hypotf atan2f expf copysignf) |
11fc1858 BK |
761 | |
762 | dnl Compile the long double complex functions only if the function | |
763 | dnl provides the non-complex long double functions that are needed. | |
764 | dnl Currently this includes copysignl and atan2l, which should be | |
765 | dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. | |
766 | USE_COMPLEX_LONG_DOUBLE=no | |
767 | if test x$ac_cv_func_atan2l = x"yes" \ | |
768 | && test x$ac_cv_func_copysignl = x"yes"; then | |
769 | USE_COMPLEX_LONG_DOUBLE=yes | |
1228c7b6 | 770 | AC_REPLACE_MATHFUNCS(hypotl signbitl) |
11fc1858 BK |
771 | fi |
772 | ||
2f103494 BK |
773 | AC_SUBST(USE_COMPLEX_LONG_DOUBLE) |
774 | ]) | |
775 | ||
54fa7415 | 776 | |
d0941a31 PE |
777 | dnl Check to see what architecture and operating system we are compiling |
778 | dnl for. Also, if architecture- or OS-specific flags are required for | |
779 | dnl compilation, pick them up here. | |
e974e9cc | 780 | dnl |
d0941a31 PE |
781 | dnl GLIBCPP_CHECK_TARGET |
782 | AC_DEFUN(GLIBCPP_CHECK_TARGET, [ | |
783 | . [$]{glibcpp_basedir}/configure.target | |
784 | AC_MSG_RESULT(CPU config directory is $cpu_include_dir) | |
785 | AC_MSG_RESULT(OS config directory is $os_include_dir) | |
5e53dba6 | 786 | AC_LINK_FILES($os_include_dir/bits/os_defines.h, include/bits/os_defines.h) |
e974e9cc BK |
787 | ]) |
788 | ||
789 | ||
b2dad0e3 BK |
790 | dnl |
791 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
8b8ab21c BK |
792 | dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This |
793 | dnl must have been previously checked.) | |
b2dad0e3 | 794 | dnl |
15bcd79a | 795 | dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found |
7b331228 | 796 | dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h |
b2dad0e3 BK |
797 | dnl |
798 | dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT | |
799 | AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ | |
7b331228 BK |
800 | |
801 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and | |
802 | dnl others even if wchar_t support is not on. | |
803 | AC_MSG_CHECKING([for mbstate_t]) | |
804 | AC_TRY_COMPILE([#include <wchar.h>], | |
805 | [mbstate_t teststate;], | |
806 | have_mbstate_t=yes, have_mbstate_t=no) | |
807 | AC_MSG_RESULT($have_mbstate_t) | |
808 | if test x"$have_mbstate_t" = xyes; then | |
809 | AC_DEFINE(HAVE_MBSTATE_T) | |
810 | fi | |
811 | ||
812 | dnl Sanity check for existence of ISO C99 headers for extended encoding. | |
813 | AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) | |
814 | AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) | |
15bcd79a | 815 | |
7b331228 BK |
816 | dnl Only continue checking if the ISO C99 headers exist and support is on. |
817 | if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes \ | |
818 | && test x"$enable_c_mbchar" != xno; then | |
819 | ||
820 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before | |
821 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
822 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
823 | AC_TRY_COMPILE([#include <wchar.h>], | |
824 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], | |
825 | has_wchar_minmax=yes, has_wchar_minmax=no) | |
826 | AC_MSG_RESULT($has_wchar_minmax) | |
8b8ab21c | 827 | |
7b331228 BK |
828 | dnl Test wchar.h for WEOF, which is what we use to determine whether |
829 | dnl to specialize for char_traits<wchar_t> or not. | |
830 | AC_MSG_CHECKING([for WEOF]) | |
831 | AC_TRY_COMPILE([ | |
832 | #include <wchar.h> | |
833 | #include <stddef.h>], | |
834 | [wint_t i = WEOF;], | |
835 | has_weof=yes, has_weof=no) | |
836 | AC_MSG_RESULT($has_weof) | |
8b8ab21c | 837 | |
7b331228 BK |
838 | dnl Tests for wide character functions used in char_traits<wchar_t>. |
839 | AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset \ | |
840 | wcsrtombs mbsrtowcs, ac_wfuncs=yes, ac_wfuncs=no) | |
8b8ab21c | 841 | |
7b331228 BK |
842 | AC_MSG_CHECKING([for ISO C99 wchar_t support]) |
843 | if test x"$has_weof" = xyes && test x"$has_wchar_minmax" = xyes \ | |
844 | && test x"$ac_wfuncs" = xyes; then | |
845 | ac_isoC99_wchar_t=yes | |
846 | else | |
847 | ac_isoC99_wchar_t=no | |
848 | fi | |
849 | AC_MSG_RESULT($ac_isoC99_wchar_t) | |
8b8ab21c | 850 | |
7b331228 BK |
851 | dnl Use iconv for wchar_t to char conversions. As such, check for |
852 | dnl X/Open Portability Guide, version 2 features (XPG2). | |
853 | AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) | |
854 | AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) | |
855 | ||
856 | dnl Check for existence of libiconv.a providing XPG2 wchar_t support. | |
857 | AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") | |
858 | ac_save_LIBS="$LIBS" | |
859 | LIBS="$LIBS $libiconv" | |
860 | ||
861 | AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ | |
862 | ac_XPG2funcs=yes, ac_XPG2funcs=no) | |
8b8ab21c | 863 | |
7b331228 | 864 | LIBS="$ac_save_LIBS" |
5b20f7a0 | 865 | |
7b331228 BK |
866 | AC_MSG_CHECKING([for XPG2 wchar_t support]) |
867 | if test x"$ac_has_iconv_h" = xyes && test x"$ac_has_langinfo_h" = xyes \ | |
868 | && test x"$ac_XPG2funcs" = xyes; then | |
869 | ac_XPG2_wchar_t=yes | |
870 | else | |
871 | ac_XPG2_wchar_t=no | |
872 | fi | |
873 | AC_MSG_RESULT($ac_XPG2_wchar_t) | |
15bcd79a | 874 | |
7b331228 BK |
875 | dnl At the moment, only enable wchar_t specializations if all the |
876 | dnl above support is present. | |
877 | AC_MSG_CHECKING([for enabled wchar_t specializations]) | |
878 | if test x"$ac_isoC99_wchar_t" = xyes \ | |
879 | && test x"$ac_XPG2_wchar_t" = xyes; then | |
880 | libinst_wstring_la="libinst-wstring.la" | |
881 | AC_DEFINE(_GLIBCPP_USE_WCHAR_T) | |
882 | AC_MSG_RESULT("yes") | |
15bcd79a | 883 | else |
7b331228 BK |
884 | libinst_wstring_la="" |
885 | AC_MSG_RESULT("no") | |
15bcd79a | 886 | fi |
7b331228 BK |
887 | AC_SUBST(libinst_wstring_la) |
888 | ||
15bcd79a | 889 | else |
7b331228 BK |
890 | dnl Wide characters disabled by the user. |
891 | AC_MSG_WARN([wchar_t support disabled.]) | |
b2dad0e3 | 892 | fi |
b2dad0e3 BK |
893 | ]) |
894 | ||
895 | ||
896 | dnl | |
897 | dnl Check to see if this version of GNU C++ is afflicted by bugs in | |
898 | dnl __complex__ float support. | |
899 | dnl | |
900 | dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy. | |
901 | dnl | |
2f103494 BK |
902 | dnl Check to see if this version of GNU C++ is afflicted by bugs in |
903 | dnl __complex__ support.Check for buggy __complex__ that will cause ICE in | |
904 | dnl gcc-2.95.x when using the library, unless we define the default copy | |
905 | dnl ctor in the specializations of complex<>. | |
906 | dnl | |
907 | dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy. | |
908 | dnl GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT | |
909 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_COMPILER_SUPPORT, [ | |
b2dad0e3 | 910 | AC_REQUIRE([AC_PROG_CXX]) |
2f103494 BK |
911 | |
912 | AC_MSG_CHECKING([for GNU C++ __complex__ support]) | |
913 | AC_CACHE_VAL(glibcpp_cv_complex, [ | |
914 | AC_LANG_SAVE | |
915 | AC_LANG_CPLUSPLUS | |
916 | AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \ | |
8b8ab21c BK |
917 | dcomplex f(const dcomplex& x) { return dcomplex(x); }], \ |
918 | [ dcomplex x; f(x); ], | |
2f103494 BK |
919 | glibcpp_cv_complex=ok, |
920 | glibcpp_cv_complex=buggy | |
921 | ) | |
922 | AC_LANG_RESTORE | |
923 | ]) | |
924 | AC_MSG_RESULT($glibcpp_cv_complex) | |
925 | if test $glibcpp_cv_complex = buggy; then | |
926 | AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX) | |
927 | fi | |
928 | ||
b2dad0e3 BK |
929 | AC_MSG_CHECKING([for GNU C++ __complex__ float support]) |
930 | AC_CACHE_VAL(glibcpp_cv_float_complex, [ | |
931 | AC_LANG_SAVE | |
932 | AC_LANG_CPLUSPLUS | |
933 | rm -f conftest.h | |
934 | cat > conftest.h <<EOB | |
935 | // | |
936 | // Check for buggy __complex__ that causes ICE in most versions of egcs | |
937 | // and gcc-2.95.x on certain platforms (eg., x86-win32). | |
938 | // | |
747dcaf1 | 939 | // See http://gcc.gnu.org/ml/gcc-bugs/1999-07n/msg00845.html for |
b2dad0e3 BK |
940 | // more info on the bug itself. |
941 | // | |
942 | struct | |
943 | float_complex | |
944 | { | |
945 | __complex__ float m_value; | |
946 | float_complex (float = 0.0f, float = 0.0f); | |
947 | float_complex (__complex__ float val) : m_value (val) {} | |
948 | float_complex foo (const float_complex &val) | |
949 | { return float_complex (~val.m_value); } | |
950 | }; | |
951 | EOB | |
952 | AC_TRY_COMPILE([#include "conftest.h"], , | |
953 | glibcpp_cv_float_complex=ok, | |
954 | glibcpp_cv_float_complex=buggy | |
955 | ) | |
956 | AC_LANG_RESTORE | |
957 | ]) | |
958 | AC_MSG_RESULT($glibcpp_cv_float_complex) | |
959 | if test $glibcpp_cv_float_complex = buggy; then | |
960 | AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX) | |
961 | fi | |
962 | ]) | |
963 | ||
964 | ||
b2dad0e3 | 965 | dnl |
8bd636c5 | 966 | dnl Check for special debugging mode; not for production use. |
b2dad0e3 BK |
967 | dnl |
968 | dnl GLIBCPP_ENABLE_DEBUG | |
34791641 | 969 | dnl --enable-debug sets '-ggdb3 -O0'. |
b2dad0e3 BK |
970 | dnl --disable-debug sets '-g' and whatever optimization options the |
971 | dnl compiler can handle. | |
7f586614 | 972 | dnl + --enable-maintainer-mode automatically defaults this to on. |
b2dad0e3 BK |
973 | dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...? |
974 | dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] | |
975 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
976 | dnl defaults to `no'. | |
977 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl | |
978 | define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
979 | AC_ARG_ENABLE(debug, | |
980 | changequote(<<, >>)dnl | |
981 | << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], | |
982 | changequote([, ])dnl | |
5780a46b | 983 | [case "${enableval}" in |
b2dad0e3 BK |
984 | yes) enable_debug=yes ;; |
985 | no) enable_debug=no ;; | |
986 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; | |
987 | esac], | |
988 | enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl | |
5780a46b | 989 | |
b2dad0e3 | 990 | dnl Option parsed, now set things appropriately |
5780a46b | 991 | case "${enable_debug}" in |
cde28f0d | 992 | yes) |
34791641 | 993 | DEBUG_FLAGS='-O0 -ggdb3' |
6abd2230 | 994 | ;; |
f3b004d8 | 995 | no) |
8b8ab21c | 996 | DEBUG_FLAGS='-g' |
f3b004d8 | 997 | ;; |
b2dad0e3 | 998 | esac |
c470c17d | 999 | AC_SUBST(DEBUG_FLAGS) |
b2dad0e3 BK |
1000 | ]) |
1001 | ||
1002 | ||
dcfa0bc8 PE |
1003 | dnl |
1004 | dnl Check for "unusual" flags to pass to the compiler while building. | |
1005 | dnl | |
1006 | dnl GLIBCPP_ENABLE_CXX_FLAGS | |
1007 | dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing | |
1008 | dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. | |
1009 | dnl Somehow this same set of flags must be passed when [re]building | |
1010 | dnl libgcc. | |
1011 | dnl --disable-cxx-flags passes nothing. | |
a9ab8db1 JM |
1012 | dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
1013 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html | |
1014 | dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html | |
dcfa0bc8 | 1015 | dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) |
32a4595e PE |
1016 | dnl If "default flags" is an empty string (or "none"), the effect is |
1017 | dnl the same as --disable or --enable=no. | |
dcfa0bc8 PE |
1018 | AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl |
1019 | define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl | |
1020 | AC_ARG_ENABLE(cxx-flags, | |
1021 | changequote(<<, >>)dnl | |
1022 | << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; | |
1023 | [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], | |
1024 | changequote([, ])dnl | |
1025 | [case "x$enableval" in | |
5780a46b | 1026 | xyes) |
8b8ab21c | 1027 | AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; |
5780a46b | 1028 | xno|x) |
8b8ab21c | 1029 | enable_cxx_flags='' ;; |
5780a46b | 1030 | *) |
8b8ab21c | 1031 | enable_cxx_flags="$enableval" ;; |
dcfa0bc8 | 1032 | esac], |
5780a46b BK |
1033 | enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT') |
1034 | ||
32a4595e | 1035 | dnl Thinko on my part during design. This kludge is the workaround. |
5780a46b BK |
1036 | if test "$enable_cxx_flags" = "none"; then |
1037 | enable_cxx_flags=''; | |
1038 | fi | |
1039 | ||
32a4595e PE |
1040 | dnl Run through flags (either default or command-line) and set anything |
1041 | dnl extra (e.g., #defines) that must accompany particular g++ options. | |
dcfa0bc8 PE |
1042 | if test -n "$enable_cxx_flags"; then |
1043 | for f in $enable_cxx_flags; do | |
1044 | case "$f" in | |
991a40fc | 1045 | -fhonor-std) ;; |
dcfa0bc8 PE |
1046 | -*) ;; |
1047 | *) # and we're trying to pass /what/ exactly? | |
1048 | AC_MSG_ERROR([compiler flags start with a -]) ;; | |
1049 | esac | |
1050 | done | |
1051 | fi | |
1052 | EXTRA_CXX_FLAGS="$enable_cxx_flags" | |
1053 | AC_SUBST(EXTRA_CXX_FLAGS) | |
1054 | ]) | |
1055 | ||
1056 | ||
0214010c BK |
1057 | dnl |
1058 | dnl Check for which locale library to use: gnu or generic. | |
1059 | dnl | |
1060 | dnl GLIBCPP_ENABLE_CLOCALE | |
1061 | dnl --enable-clocale=gnu sets config/c_locale_gnu.cc and friends | |
1062 | dnl --enable-clocale=generic sets config/c_locale_generic.cc and friends | |
1063 | dnl | |
1064 | dnl default is generic | |
1065 | dnl | |
1066 | AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [ | |
1067 | AC_MSG_CHECKING([for clocale to use]) | |
1068 | AC_ARG_ENABLE(clocale, | |
1069 | [ --enable-clocale enable model for target locale package. | |
1070 | --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] | |
1071 | ], | |
1072 | if test x$enable_clocale = xno; then | |
1073 | enable_clocale=generic | |
1074 | fi, | |
1075 | enable_clocale=generic) | |
1076 | ||
1077 | enable_clocale_flag=$enable_clocale | |
1078 | ||
1079 | dnl Check if a valid locale package | |
1080 | case x${enable_clocale_flag} in | |
1081 | xgnu) | |
1082 | CLOCALE_H=config/c_locale_gnu.h | |
1083 | CLOCALE_CC=config/c_locale_gnu.cc | |
1084 | AC_MSG_RESULT(gnu) | |
1085 | ;; | |
1086 | xgeneric) | |
1087 | CLOCALE_H=config/c_locale_generic.h | |
1088 | CLOCALE_CC=config/c_locale_generic.cc | |
1089 | AC_MSG_RESULT(generic) | |
1090 | ;; | |
1091 | *) | |
1092 | echo "$enable_clocale is an unknown locale package" 1>&2 | |
1093 | exit 1 | |
1094 | ;; | |
1095 | esac | |
1096 | ||
1097 | AC_LINK_FILES($CLOCALE_H, include/bits/c++locale.h) | |
1098 | AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc) | |
1099 | ]) | |
1100 | ||
1101 | ||
b2dad0e3 | 1102 | dnl |
8bd636c5 | 1103 | dnl Check for which I/O library to use: libio, or something specific. |
b2dad0e3 BK |
1104 | dnl |
1105 | dnl GLIBCPP_ENABLE_CSTDIO | |
1106 | dnl --enable-cstdio=libio sets config/c_io_libio.h and friends | |
1107 | dnl | |
8e2d9424 | 1108 | dnl default is stdio |
b2dad0e3 BK |
1109 | dnl |
1110 | AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [ | |
1111 | AC_MSG_CHECKING([for cstdio to use]) | |
1112 | AC_ARG_ENABLE(cstdio, | |
36e40658 BK |
1113 | [ --enable-cstdio enable stdio for target io package. |
1114 | --enable-cstdio=LIB use LIB target-speific io package. [default=stdio] | |
1115 | ], | |
b2dad0e3 | 1116 | if test x$enable_cstdio = xno; then |
8e2d9424 | 1117 | enable_cstdio=stdio |
b2dad0e3 | 1118 | fi, |
8e2d9424 | 1119 | enable_cstdio=stdio) |
b2dad0e3 BK |
1120 | |
1121 | enable_cstdio_flag=$enable_cstdio | |
1122 | ||
8b8ab21c | 1123 | dnl Check if a valid I/O package |
b2dad0e3 | 1124 | case x${enable_cstdio_flag} in |
e26cb7ab | 1125 | xlibio) |
dd75251f BK |
1126 | CSTDIO_H=config/c_io_libio.h |
1127 | CSTDIO_CC=config/c_io_libio.cc | |
1128 | AC_MSG_RESULT(libio) | |
1129 | ||
1130 | # see if we are on a system with libio native (ie, linux) | |
1131 | AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no) | |
1132 | ||
1133 | # Need to check and see what version of glibc is being used. If | |
1134 | # it's not glibc-2.2 or higher, then we'll need to go ahead and | |
1135 | # compile most of libio for linux systems. | |
1136 | if test x$has_libio = x"yes"; then | |
1137 | case "$target" in | |
1138 | *-*-linux*) | |
8b8ab21c BK |
1139 | AC_MSG_CHECKING([for glibc version >= 2.2]) |
1140 | AC_EGREP_CPP([ok], [ | |
1141 | #include <features.h> | |
1142 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) | |
1143 | ok | |
1144 | #endif | |
1145 | ], glibc_satisfactory=yes, glibc_satisfactory=no) | |
1146 | AC_MSG_RESULT($glibc_satisfactory) | |
1147 | ;; | |
dd75251f BK |
1148 | esac |
1149 | ||
8b8ab21c | 1150 | # XXX at the moment, admit defeat and force the recompilation |
f133a43e | 1151 | # XXX of glibc even on glibc-2.2 systems, because libio is not synched. |
8b8ab21c BK |
1152 | glibc_satisfactory=no |
1153 | ||
1154 | if test x$glibc_satisfactory = x"yes"; then | |
1155 | need_libio=no | |
8b8ab21c BK |
1156 | need_wlibio=no |
1157 | else | |
1158 | need_libio=yes | |
8b8ab21c BK |
1159 | # bkoz XXX need to add checks to enable this |
1160 | # pme XXX here's a first pass at such a check | |
1161 | if test x$enable_c_mbchar != xno; then | |
1162 | need_wlibio=yes | |
1163 | else | |
1164 | need_wlibio=no | |
1165 | fi | |
1166 | fi | |
dd75251f | 1167 | |
dd75251f | 1168 | else |
5bd17d39 | 1169 | # Using libio, but <libio.h> doesn't exist on the target system. . . |
8b8ab21c | 1170 | need_libio=yes |
8b8ab21c BK |
1171 | # bkoz XXX need to add checks to enable this |
1172 | # pme XXX here's a first pass at such a check | |
1173 | if test x$enable_c_mbchar != xno; then | |
1174 | need_wlibio=yes | |
1175 | else | |
1176 | need_wlibio=no | |
1177 | fi | |
dd75251f BK |
1178 | fi |
1179 | ;; | |
e26cb7ab MM |
1180 | xstdio | x | xno | xnone | xyes) |
1181 | # default | |
9717c75c BK |
1182 | CSTDIO_H=config/c_io_stdio.h |
1183 | CSTDIO_CC=config/c_io_stdio.cc | |
1184 | AC_MSG_RESULT(stdio) | |
dd75251f | 1185 | |
e26cb7ab | 1186 | # We're not using stdio. |
dd75251f | 1187 | need_libio=no |
e26cb7ab MM |
1188 | need_wlibio=no |
1189 | # Wide characters are not supported with this package. | |
1190 | enable_c_mbchar=no | |
dd75251f BK |
1191 | ;; |
1192 | *) | |
1193 | echo "$enable_cstdio is an unknown io package" 1>&2 | |
1194 | exit 1 | |
1195 | ;; | |
b2dad0e3 | 1196 | esac |
5e53dba6 | 1197 | AC_LINK_FILES($CSTDIO_H, include/bits/c++io.h) |
c4561450 | 1198 | AC_LINK_FILES($CSTDIO_CC, src/c++io.cc) |
8901ac21 BK |
1199 | |
1200 | # 2000-08-04 bkoz hack | |
1201 | CCODECVT_C=config/c_io_libio_codecvt.c | |
1202 | AC_LINK_FILES($CCODECVT_C, libio/c_codecvt.c) | |
1203 | # 2000-08-04 bkoz hack | |
8b8ab21c | 1204 | |
85a011b0 PE |
1205 | AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO, |
1206 | test "$need_libio" = yes || test "$need_wlibio" = yes) | |
b2dad0e3 | 1207 | AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes) |
20427c6b | 1208 | AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes) |
c4d3f801 | 1209 | if test "$need_libio" = yes || test "$need_wlibio" = yes; then |
4c07386b | 1210 | libio_la=../libio/libio.la |
c4d3f801 | 1211 | else |
4c07386b | 1212 | libio_la= |
c4d3f801 MM |
1213 | fi |
1214 | AC_SUBST(libio_la) | |
b2dad0e3 BK |
1215 | ]) |
1216 | ||
1217 | ||
1218 | dnl | |
8bd636c5 | 1219 | dnl Check for which threading library to use. |
b2dad0e3 BK |
1220 | dnl |
1221 | dnl GLIBCPP_ENABLE_THREADS | |
1222 | dnl --enable-threads=posix sets config/threads-posix.h et. al. | |
1223 | dnl | |
8b8ab21c BK |
1224 | dnl Default is no threads, which also disables _IO_MTSAFE_IO in |
1225 | dnl libio. Any actual thread package will enable it. | |
b2dad0e3 BK |
1226 | dnl |
1227 | AC_DEFUN(GLIBCPP_ENABLE_THREADS, [ | |
1228 | dnl Note this comes from the gcc/config.in and libjava/config.in | |
1229 | dnl Efforts should be made to keep this in sync. | |
1230 | AC_MSG_CHECKING([for threads package to use]) | |
1231 | AC_ARG_ENABLE(threads, | |
36e40658 BK |
1232 | [ --enable-threads enable thread usage for target GCC. |
1233 | --enable-threads=LIB use LIB thread package for target GCC. [default=no] | |
1234 | ], | |
b2dad0e3 BK |
1235 | if test x$enable_threads = xno; then |
1236 | enable_threads='' | |
1237 | fi, | |
1238 | enable_threads='') | |
1239 | ||
1240 | enable_threads_flag=$enable_threads | |
1241 | ||
1242 | dnl Check if a valid thread package | |
1243 | case x${enable_threads_flag} in | |
8b8ab21c BK |
1244 | x | xno | xnone) |
1245 | # No threads | |
1246 | target_thread_file='single' | |
1247 | ;; | |
1248 | xyes) | |
1249 | # default | |
d0941a31 | 1250 | target_thread_file='posix' |
8b8ab21c BK |
1251 | ;; |
1252 | xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \ | |
1253 | xsolaris | xwin32 | xdce | xvxworks) | |
1254 | target_thread_file=$enable_threads_flag | |
1255 | ;; | |
1256 | *) | |
1257 | echo "$enable_threads is an unknown thread package" 1>&2 | |
1258 | exit 1 | |
1259 | ;; | |
b2dad0e3 BK |
1260 | esac |
1261 | ||
1262 | dnl Check for thread package actually supported in libstdc++ | |
e974e9cc | 1263 | THREADH= |
b2dad0e3 BK |
1264 | case "$target_thread_file" in |
1265 | no | none | single) | |
e974e9cc | 1266 | THREADH=threads-no.h |
b2dad0e3 BK |
1267 | ;; |
1268 | posix | pthreads) | |
e974e9cc | 1269 | THREADH=threads-posix.h |
b2dad0e3 BK |
1270 | ;; |
1271 | decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks) | |
1272 | AC_MSG_ERROR(thread package $THREADS not yet supported) | |
1273 | ;; | |
1274 | *) | |
d0941a31 | 1275 | AC_MSG_ERROR($THREADS is an unsupported/unknown thread package) |
b2dad0e3 BK |
1276 | ;; |
1277 | esac | |
e974e9cc | 1278 | AC_MSG_RESULT($THREADH) |
b2dad0e3 | 1279 | |
5e53dba6 | 1280 | AC_LINK_FILES(config/$THREADH, include/bits/c++threads.h) |
8b8ab21c BK |
1281 | if test $THREADH != threads-no.h; then |
1282 | AC_DEFINE(_GLIBCPP_USE_THREADS) | |
1283 | fi | |
b2dad0e3 BK |
1284 | ]) |
1285 | ||
1286 | ||
1287 | dnl | |
8bd636c5 | 1288 | dnl Check for template specializations for the 'long long' type extension. |
b2dad0e3 BK |
1289 | dnl |
1290 | dnl GLIBCPP_ENABLE_LONG_LONG | |
1291 | dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG | |
1292 | dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined | |
1293 | dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)] | |
1294 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
1295 | dnl defaults to `no'. | |
0137be2d | 1296 | dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'. |
b2dad0e3 BK |
1297 | dnl |
1298 | dnl GLIBCPP_ENABLE_LONG_LONG | |
1299 | AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl | |
1300 | define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
30ff6342 | 1301 | |
b2dad0e3 BK |
1302 | AC_ARG_ENABLE(long-long, |
1303 | changequote(<<, >>)dnl | |
d0d88ce3 | 1304 | <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT], |
b2dad0e3 BK |
1305 | changequote([, ])dnl |
1306 | [case "$enableval" in | |
1307 | yes) enable_long_long=yes ;; | |
1308 | no) enable_long_long=no ;; | |
1309 | *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;; | |
1310 | esac], | |
1311 | enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl | |
f4c79fef BK |
1312 | |
1313 | # Allow use of os-dependent settings, so that macros that turn on | |
1314 | # C99 capabilities can be defined and used in a consistent way. | |
1315 | OS_INC_PATH=${srcdir}/$os_include_dir | |
1316 | ac_test_CFLAGS="${CFLAGS+set}" | |
1317 | ac_save_CFLAGS="$CFLAGS" | |
1318 | CFLAGS="-I$OS_INC_PATH" | |
30ff6342 | 1319 | |
f4c79fef | 1320 | # Check for the existence of functions used if long long is enabled. |
30ff6342 BK |
1321 | AC_CHECK_FUNC(strtoll,,ac_strtoll=no) |
1322 | AC_CHECK_FUNC(strtoull,,ac_strtoull=no) | |
1323 | ||
f4c79fef BK |
1324 | # Check for lldiv_t, et. al. |
1325 | AC_MSG_CHECKING([for lldiv_t declaration]) | |
1326 | AC_CACHE_VAL(glibcpp_lldiv_t_use, [ | |
1327 | AC_TRY_COMPILE([#include <bits/os_defines.h> | |
4c07386b | 1328 | #include <stdlib.h>], |
f4c79fef BK |
1329 | [ lldiv_t mydivt;], |
1330 | [glibcpp_lldiv_t_use=yes], [glibcpp_lldiv_t_use=no]) | |
1331 | ]) | |
1332 | AC_MSG_RESULT($glibcpp_lldiv_t_use) | |
1333 | if test x$glibcpp_lldiv_t_use = x"yes"; then | |
a767e383 | 1334 | AC_DEFINE(HAVE_LLDIV_T) |
f4c79fef BK |
1335 | fi |
1336 | ||
3840fa2a | 1337 | AC_MSG_CHECKING([for enabled long long]) |
30ff6342 | 1338 | if test x"$ac_strtoll" = xno || test x"$ac_strtoull" = xno; then |
3840fa2a BK |
1339 | enable_long_long=no; |
1340 | fi; | |
d0d88ce3 | 1341 | AC_MSG_RESULT($enable_long_long) |
3840fa2a | 1342 | |
f4c79fef | 1343 | # Option parsed, now set things appropriately |
dcc41852 BK |
1344 | if test x"$enable_long_long" = xyes; then |
1345 | AC_DEFINE(_GLIBCPP_USE_LONG_LONG) | |
1346 | fi | |
4c07386b | 1347 | |
f4c79fef BK |
1348 | # Reset CFLAGS |
1349 | CFLAGS="$ac_save_CFLAGS" | |
b2dad0e3 BK |
1350 | ]) |
1351 | ||
1352 | ||
99246c90 | 1353 | dnl |
e3123ab3 BK |
1354 | dnl Check for what kind of C headers to use. |
1355 | dnl | |
1356 | dnl GLIBCPP_ENABLE_CHEADERS | |
1357 | dnl --enable-cheaders= [does stuff]. | |
1358 | dnl --disable-cheaders [does not do anything, really]. | |
1359 | dnl + This will eventually need to be 'c_shadow' by default. | |
1360 | dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)] | |
1361 | dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'. | |
1362 | dnl If ommitted, it defaults to `c_std'. | |
1363 | AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl | |
1364 | define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl | |
1365 | AC_MSG_CHECKING([for c header strategy to use]) | |
1366 | AC_ARG_ENABLE(cheaders, | |
99246c90 | 1367 | changequote(<<, >>)dnl |
e3123ab3 BK |
1368 | << --enable-cheaders construct "C" header files for |
1369 | g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT], | |
5780a46b BK |
1370 | changequote([, ]) |
1371 | [case "$enableval" in | |
e3123ab3 | 1372 | c) |
9b8fd32c | 1373 | enable_cheaders=c |
8b8ab21c | 1374 | ;; |
e3123ab3 | 1375 | c_std) |
9b8fd32c | 1376 | enable_cheaders=c_std |
8b8ab21c | 1377 | ;; |
e3123ab3 | 1378 | c_shadow) |
9b8fd32c | 1379 | enable_cheaders=c_shadow |
e3123ab3 BK |
1380 | ;; |
1381 | *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers]) | |
8b8ab21c | 1382 | ;; |
5780a46b | 1383 | esac], |
e3123ab3 BK |
1384 | enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT) |
1385 | AC_MSG_RESULT($enable_cheaders) | |
5780a46b BK |
1386 | |
1387 | dnl Option parsed, now set things appropriately | |
e3123ab3 BK |
1388 | case "$enable_cheaders" in |
1389 | c_shadow) | |
8b8ab21c | 1390 | CSHADOW_FLAGS="-fno-builtin" |
e3123ab3 | 1391 | C_INCLUDE_DIR='${top_srcdir}/include/c_shadow' |
0517cb99 | 1392 | AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS) |
8b8ab21c | 1393 | ;; |
e3123ab3 BK |
1394 | c_std) |
1395 | CSHADOW_FLAGS="" | |
1396 | C_INCLUDE_DIR='${top_srcdir}/include/c_std' | |
1397 | ;; | |
1398 | c) | |
8b8ab21c BK |
1399 | CSHADOW_FLAGS="" |
1400 | C_INCLUDE_DIR='${top_srcdir}/include/c' | |
99246c90 | 1401 | ;; |
5780a46b | 1402 | esac |
5b80666b | 1403 | |
e466dc8a BK |
1404 | AC_SUBST(CSHADOW_FLAGS) |
1405 | AC_SUBST(C_INCLUDE_DIR) | |
e3123ab3 | 1406 | AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow) |
99246c90 | 1407 | ]) |
b2dad0e3 | 1408 | |
8b8ab21c BK |
1409 | |
1410 | dnl | |
1411 | dnl Check for wide character support. Has the same effect as the option | |
1412 | dnl in gcc's configure, but in a form that autoconf can mess with. | |
1413 | dnl | |
1414 | dnl GLIBCPP_ENABLE_C_MBCHAR | |
1415 | dnl --enable-c-mbchar requests all the wchar_t stuff. | |
1416 | dnl --disable-c-mbchar doesn't. | |
1417 | dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)] | |
1418 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
1419 | dnl defaults to `no'. | |
1420 | AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl | |
1421 | define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl | |
1422 | AC_ARG_ENABLE(c-mbchar, | |
1423 | changequote(<<, >>)dnl | |
1424 | << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], | |
1425 | changequote([, ])dnl | |
1426 | [case "$enableval" in | |
1427 | yes) enable_c_mbchar=yes ;; | |
1428 | no) enable_c_mbchar=no ;; | |
1429 | *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;; | |
1430 | esac], | |
1431 | enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl | |
1432 | dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no. | |
1433 | ]) | |
1434 | ||
1435 | ||
e466dc8a BK |
1436 | dnl |
1437 | dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's. | |
1438 | dnl | |
1439 | dnl GLIBCPP_INCLUDE_DIR | |
1440 | dnl C_INCLUDE_DIR | |
1441 | dnl TOPLEVEL_INCLUDES | |
1442 | dnl LIBMATH_INCLUDES | |
1443 | dnl LIBSUPCXX_INCLUDES | |
1444 | dnl LIBIO_INCLUDES | |
1445 | dnl CSHADOW_INCLUDES | |
1446 | dnl | |
1447 | dnl GLIBCPP_EXPORT_INCLUDE | |
1448 | AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [ | |
1449 | # Root level of the include sources. | |
1450 | GLIBCPP_INCLUDE_DIR='$(top_srcdir)/include' | |
1451 | ||
1452 | # Can either use include/c or include/c_std to grab "C" headers. This | |
1453 | # variable is set to the include directory currently in use. | |
e3123ab3 | 1454 | # set with C_INCLUDE_DIR in GLIBCPP_ENABLE_CHEADERS |
e466dc8a | 1455 | |
9f935979 BK |
1456 | # Passed down for canadian crosses. |
1457 | if test x"$CANADIAN" = xyes; then | |
1458 | TOPLEVEL_INCLUDES='-I$(includedir)' | |
1459 | fi | |
e466dc8a BK |
1460 | |
1461 | LIBMATH_INCLUDES='-I$(top_srcdir)/libmath' | |
1462 | ||
1463 | LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++' | |
1464 | ||
1465 | #if GLIBCPP_NEED_LIBIO | |
1466 | LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio' | |
1467 | #else | |
1468 | #LIBIO_INCLUDES='-I$(top_srcdir)/libio' | |
1469 | #endif | |
1470 | ||
1471 | #if GLIBCPP_USE_CSHADOW | |
1472 | # CSHADOW_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR) \ | |
1473 | # -I$(top_blddir)/cshadow' | |
1474 | #else | |
a40ba78e | 1475 | CSTD_INCLUDES='-I$(GLIBCPP_INCLUDE_DIR)/std -I$(C_INCLUDE_DIR)' |
e466dc8a BK |
1476 | #endif |
1477 | ||
1478 | # Now, export this to all the little Makefiles.... | |
1479 | AC_SUBST(GLIBCPP_INCLUDE_DIR) | |
1480 | AC_SUBST(TOPLEVEL_INCLUDES) | |
1481 | AC_SUBST(LIBMATH_INCLUDES) | |
1482 | AC_SUBST(LIBSUPCXX_INCLUDES) | |
1483 | AC_SUBST(LIBIO_INCLUDES) | |
a40ba78e | 1484 | AC_SUBST(CSTD_INCLUDES) |
e466dc8a BK |
1485 | ]) |
1486 | ||
1487 | ||
1488 | dnl | |
1489 | dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. | |
1490 | dnl | |
1491 | AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [ | |
1492 | # Optimization flags that are probably a good idea for thrill-seekers. Just | |
1493 | # uncomment the lines below and make, everything else is ready to go... | |
1494 | # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc | |
1495 | OPTIMIZE_CXXFLAGS= | |
1496 | AC_SUBST(OPTIMIZE_CXXFLAGS) | |
1497 | ||
1498 | WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline' | |
1499 | AC_SUBST(WARN_FLAGS) | |
1500 | ]) | |
1501 | ||
b2dad0e3 | 1502 | |
af9fe0d1 BK |
1503 | # Check whether LC_MESSAGES is available in <locale.h>. |
1504 | # Ulrich Drepper <drepper@cygnus.com>, 1995. | |
1505 | # | |
1506 | # This file file be copied and used freely without restrictions. It can | |
1507 | # be used in projects which are not available under the GNU Public License | |
1508 | # but which still want to provide support for the GNU gettext functionality. | |
1509 | # Please note that the actual code is *not* freely available. | |
1510 | ||
1511 | # serial 1 | |
1512 | ||
819004bb BK |
1513 | AC_DEFUN(AC_LC_MESSAGES, [ |
1514 | AC_CHECK_HEADER(locale.h, [ | |
af9fe0d1 BK |
1515 | AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, |
1516 | [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES], | |
1517 | ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) | |
1518 | if test $ac_cv_val_LC_MESSAGES = yes; then | |
1519 | AC_DEFINE(HAVE_LC_MESSAGES) | |
1520 | fi | |
819004bb BK |
1521 | ]) |
1522 | ]) | |
af9fe0d1 BK |
1523 | |
1524 | ||
1525 | # Check for functions in math library. | |
1526 | # Ulrich Drepper <drepper@cygnus.com>, 1998. | |
1527 | # | |
1528 | # This file can be copied and used freely without restrictions. It can | |
1529 | # be used in projects which are not available under the GNU Public License | |
1530 | # but which still want to provide support for the GNU gettext functionality. | |
1531 | # Please note that the actual code is *not* freely available. | |
1532 | ||
1533 | # serial 1 | |
1534 | ||
1535 | dnl AC_REPLACE_MATHFUNCS(FUNCTION...) | |
1536 | AC_DEFUN(AC_REPLACE_MATHFUNCS, | |
1537 | [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"]) | |
1538 | AC_SUBST(LIBMATHOBJS)dnl | |
1539 | ]) | |
1540 | ||
1541 | ||
1542 | # Check for string functions. | |
1543 | # Ulrich Drepper <drepper@cygnus.com>, 1998. | |
1544 | # | |
1545 | # This file can be copied and used freely without restrictions. It can | |
1546 | # be used in projects which are not available under the GNU Public License | |
1547 | # but which still want to provide support for the GNU gettext functionality. | |
1548 | # Please note that the actual code is *not* freely available. | |
1549 | ||
1550 | # serial 1 | |
1551 | ||
1552 | dnl AC_REPLACE_STRINGFUNCS(FUNCTION...) | |
1553 | AC_DEFUN(AC_REPLACE_STRINGFUNCS, | |
1554 | [AC_CHECK_FUNCS([$1], , [LIBSTRINGOBJS="$LIBSTRINGOBJS ${ac_func}.lo"]) | |
1555 | AC_SUBST(LIBSTRINGOBJS)dnl | |
1556 | ]) | |
29bd52c8 PE |
1557 | |
1558 | ||
1559 | dnl This macro searches for a GNU version of make. If a match is found, the | |
1560 | dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is | |
99b51359 | 1561 | dnl set to "#". This is useful for including a special features in a Makefile, |
29bd52c8 PE |
1562 | dnl which cannot be handled by other versions of make. The variable |
1563 | dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists, | |
1564 | dnl the empty string otherwise. | |
1565 | dnl | |
1566 | dnl Here is an example of its use: | |
1567 | dnl | |
1568 | dnl Makefile.in might contain: | |
1569 | dnl | |
1570 | dnl # A failsafe way of putting a dependency rule into a makefile | |
1571 | dnl $(DEPEND): | |
1572 | dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND) | |
1573 | dnl | |
1574 | dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND))) | |
1575 | dnl @ifGNUmake@ include $(DEPEND) | |
1576 | dnl @ifGNUmake@ endif | |
1577 | dnl | |
1578 | dnl Then configure.in would normally contain: | |
1579 | dnl | |
1580 | dnl CHECK_GNU_MAKE() | |
1581 | dnl AC_OUTPUT(Makefile) | |
1582 | dnl | |
1583 | dnl Then perhaps to cause gnu make to override any other make, we could do | |
1584 | dnl something like this (note that GNU make always looks for GNUmakefile first): | |
1585 | dnl | |
1586 | dnl if ! test x$_cv_gnu_make_command = x ; then | |
1587 | dnl mv Makefile GNUmakefile | |
1588 | dnl echo .DEFAULT: > Makefile ; | |
1589 | dnl echo \ $_cv_gnu_make_command \$@ >> Makefile; | |
1590 | dnl fi | |
1591 | dnl | |
1592 | dnl Then, if any (well almost any) other make is called, and GNU make also | |
1593 | dnl exists, then the other make wraps the GNU make. | |
1594 | dnl | |
1595 | dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au> | |
421173e6 | 1596 | dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme |
29bd52c8 PE |
1597 | dnl |
1598 | dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending | |
1599 | dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the | |
79f5e38e BC |
1600 | dnl #### conditional's subshell (" --version" is not a command), using a |
1601 | dnl #### different option to grep(1). | |
29bd52c8 | 1602 | dnl #### -pme |
57d278be MS |
1603 | dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not |
1604 | dnl #### ${MAKE:-make}). | |
1605 | dnl #### -msokolov | |
29bd52c8 PE |
1606 | AC_DEFUN( |
1607 | GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command, | |
1608 | _cv_gnu_make_command='' ; | |
1609 | dnl Search all the common names for GNU make | |
57d278be | 1610 | for a in "${MAKE-make}" make gmake gnumake ; do |
626d8f0a | 1611 | if ( $a --version 2> /dev/null | grep -c GNU > /dev/null ) |
79f5e38e | 1612 | then |
29bd52c8 PE |
1613 | _cv_gnu_make_command=$a ; |
1614 | break; | |
1615 | fi | |
1616 | done ; | |
1617 | ) ; | |
1618 | dnl If there was a GNU version, then set @ifGNUmake@ to the empty | |
1619 | dnl string, '#' otherwise | |
1620 | if test "x$_cv_gnu_make_command" != "x" ; then | |
1621 | ifGNUmake='' ; | |
1622 | else | |
1623 | ifGNUmake='#' ; | |
1624 | fi | |
1625 | AC_SUBST(ifGNUmake) | |
1626 | ]) | |
3df64633 AO |
1627 | |
1628 | sinclude(../libtool.m4) | |
1629 | dnl The lines below arrange for aclocal not to bring an installed | |
1630 | dnl libtool.m4 into aclocal.m4, while still arranging for automake to | |
1631 | dnl add a definition of LIBTOOL to Makefile.in. | |
1632 | ifelse(,,,[AC_SUBST(LIBTOOL) | |
1633 | AC_DEFUN([AM_PROG_LIBTOOL]) | |
1634 | AC_DEFUN([AC_LIBTOOL_DLOPEN]) | |
1635 | AC_DEFUN([AC_PROG_LD]) | |
7f586614 | 1636 | ]) |
9a200b0a | 1637 |