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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 | ||
30 | AC_CANONICAL_HOST | |
31 | ||
32 | AM_INIT_AUTOMAKE(libstdc++, 2.90.8) | |
33 | ||
34 | # FIXME: We temporarily define our own version of AC_PROG_CC. This is | |
35 | # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We | |
36 | # are probably using a cross compiler, which will not be able to fully | |
37 | # link an executable. This should really be fixed in autoconf | |
38 | # itself. | |
39 | ||
40 | AC_DEFUN(LIB_AC_PROG_CC, | |
41 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
42 | dnl Fool anybody using AC_PROG_CC. | |
43 | AC_PROVIDE([AC_PROG_CC]) | |
44 | AC_CHECK_PROG(CC, gcc, gcc) | |
45 | if test -z "$CC"; then | |
46 | AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) | |
47 | test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) | |
48 | fi | |
49 | ||
50 | AC_PROG_CC_GNU | |
51 | ||
52 | if test $ac_cv_prog_gcc = yes; then | |
53 | GCC=yes | |
54 | dnl Check whether -g works, even if CFLAGS is set, in case the package | |
55 | dnl plays around with CFLAGS (such as to build both debugging and | |
56 | dnl normal versions of a library), tasteless as that idea is. | |
57 | ac_test_CFLAGS="${CFLAGS+set}" | |
58 | ac_save_CFLAGS="$CFLAGS" | |
59 | CFLAGS= | |
60 | AC_PROG_CC_G | |
61 | if test "$ac_test_CFLAGS" = set; then | |
62 | CFLAGS="$ac_save_CFLAGS" | |
63 | elif test $ac_cv_prog_cc_g = yes; then | |
64 | CFLAGS="-g -O2" | |
65 | else | |
66 | CFLAGS="-O2" | |
67 | fi | |
68 | else | |
69 | GCC= | |
70 | test "${CFLAGS+set}" = set || CFLAGS="-g" | |
71 | fi | |
72 | ]) | |
73 | ||
74 | LIB_AC_PROG_CC | |
75 | ||
76 | # Likewise for AC_PROG_CXX. | |
77 | AC_DEFUN(LIB_AC_PROG_CXX, | |
78 | [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl | |
79 | dnl Fool anybody using AC_PROG_CXX. | |
80 | AC_PROVIDE([AC_PROG_CXX]) | |
81 | AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) | |
82 | test -z "$CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) | |
83 | ||
84 | AC_PROG_CXX_GNU | |
85 | ||
86 | if test $ac_cv_prog_gxx = yes; then | |
87 | GXX=yes | |
88 | dnl Check whether -g works, even if CXXFLAGS is set, in case the package | |
89 | dnl plays around with CXXFLAGS (such as to build both debugging and | |
90 | dnl normal versions of a library), tasteless as that idea is. | |
91 | ac_test_CXXFLAGS="${CXXFLAGS+set}" | |
92 | ac_save_CXXFLAGS="$CXXFLAGS" | |
93 | CXXFLAGS= | |
94 | AC_PROG_CXX_G | |
95 | if test "$ac_test_CXXFLAGS" = set; then | |
96 | CXXFLAGS="$ac_save_CXXFLAGS" | |
97 | elif test $ac_cv_prog_cxx_g = yes; then | |
98 | CXXFLAGS="-g -O2" | |
99 | else | |
100 | CXXFLAGS="-O2" | |
101 | fi | |
102 | else | |
103 | GXX= | |
104 | test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" | |
105 | fi | |
106 | ]) | |
107 | ||
108 | LIB_AC_PROG_CXX | |
109 | ||
110 | # AC_CHECK_TOOL does AC_REQUIRE (AC_CANONICAL_BUILD). If we dont | |
111 | # run it explicitly here, it will be run implicitly before | |
112 | # LIBGCJ_CONFIGURE, which doesn't work because that means that it will | |
113 | # be run before AC_CANONICAL_HOST. | |
114 | AC_CANONICAL_BUILD | |
115 | ||
116 | AC_CHECK_TOOL(AS, as) | |
117 | AC_CHECK_TOOL(AR, ar) | |
118 | AC_CHECK_TOOL(RANLIB, ranlib, :) | |
119 | ||
120 | AC_PROG_INSTALL | |
121 | ||
122 | AM_MAINTAINER_MODE | |
123 | ||
124 | # We need AC_EXEEXT to keep automake happy in cygnus mode. However, | |
125 | # at least currently, we never actually build a program, so we never | |
126 | # need to use $(EXEEXT). Moreover, the test for EXEEXT normally | |
127 | # fails, because we are probably configuring with a cross compiler | |
128 | # which cant create executables. So we include AC_EXEEXT to keep | |
129 | # automake happy, but we dont execute it, since we dont care about | |
130 | # the result. | |
131 | if false; then | |
132 | AC_EXEEXT | |
133 | fi | |
134 | ||
135 | # configure.host sets the following important variables | |
136 | # glibcpp_cflags - host specific C compiler flags | |
137 | # glibcpp_cxxflags - host specific C++ compiler flags | |
138 | ||
139 | glibcpp_cflags= | |
140 | glibcpp_cxxflags= | |
141 | ||
142 | . [$]{glibcpp_basedir}/configure.host | |
143 | ||
144 | case [$]{glibcpp_basedir} in | |
145 | /* | [A-Za-z]:[/\\]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; | |
146 | *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; | |
147 | esac | |
148 | ||
149 | GLIBCPP_CFLAGS="[$]{glibcpp_cflags}" | |
150 | GLIBCPP_CXXFLAGS="[$]{glibcpp_cxxflags}" | |
151 | AC_SUBST(GLIBCPP_CFLAGS) | |
152 | AC_SUBST(GLIBCPP_CXXFLAGS) | |
153 | ]) | |
154 | ||
155 | ||
156 | dnl | |
157 | dnl Check to see if g++ can compile this library. | |
158 | dnl | |
159 | dnl Define OPTLEVEL='-O2' if new inlining code present. | |
160 | dnl | |
161 | dnl GLIBCPP_CHECK_COMPILER_VERSION | |
162 | AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ | |
163 | AC_MSG_CHECKING([for g++ that will successfullly compile this code]) | |
164 | AC_EGREP_CPP([ok], [ | |
165 | #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) | |
166 | ok | |
167 | #endif | |
168 | ], gpp_satisfactory=yes, AC_MSG_ERROR("please upgrade to gcc-2.95 or above")) | |
169 | AC_MSG_RESULT($gpp_satisfactory) | |
170 | ||
171 | AC_MSG_CHECKING([for g++ that supports new inlining mechanism]) | |
172 | AC_EGREP_CPP([ok], [ | |
173 | #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 95) | |
174 | ok | |
175 | #endif | |
176 | ], [OPTLEVEL='-O2' | |
177 | WERRORSUPPRESS= | |
178 | ], [OPTLEVEL= | |
179 | WERRORSUPPRESS=-Wno-error | |
180 | ]) | |
181 | if test "$OPTLEVEL" = ""; then | |
182 | AC_MSG_RESULT(no) | |
183 | else | |
184 | AC_MSG_RESULT(yes) | |
185 | fi | |
186 | AC_SUBST(OPTLEVEL) | |
187 | AC_SUBST(WERRORSUPPRESS) | |
188 | ]) | |
189 | ||
190 | ||
191 | dnl | |
192 | dnl Check to see what builtin math functions are supported | |
193 | dnl | |
194 | dnl Define _GLIBCPP_HAS_BUILTIN_SINF if __builtin_sinf | |
195 | dnl Define _GLIBCPP_HAS_BUILTIN_COSF if __builtin_cosf | |
196 | dnl Define _GLIBCPP_HAS_BUILTIN_FABSF if __builtin_fabsf | |
197 | dnl Define _GLIBCPP_HAS_BUILTIN_SQRTF if __builtin_sqrtf | |
198 | dnl | |
199 | dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT | |
200 | AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ | |
201 | dnl Test for builtin math functions. | |
202 | AC_MSG_CHECKING([for __builtin_sinf]) | |
203 | AC_TRY_COMPILE([#include <math.h>], | |
204 | [float foo(void) { __builtin_sinf(0.0); }], | |
205 | use_builtin_sinf=yes, use_builtin_sinf=no) | |
206 | AC_MSG_RESULT($use_builtin_sinf) | |
207 | if test $use_builtin_sinf = "yes"; then | |
208 | AC_DEFINE(_GLIBCPP_HAS_BUILTIN_SINF) | |
209 | fi | |
210 | ||
211 | AC_MSG_CHECKING([for __builtin_cosf]) | |
212 | AC_TRY_COMPILE([#include <math.h>], | |
213 | [float foo(void) { __builtin_cosf(0.0); }], | |
214 | use_builtin_cosf=yes, use_builtin_cosf=no) | |
215 | AC_MSG_RESULT($use_builtin_cosf) | |
216 | if test $use_builtin_cosf = "yes"; then | |
217 | AC_DEFINE(_GLIBCPP_HAS_BUILTIN_COSF) | |
218 | fi | |
219 | ||
220 | AC_MSG_CHECKING([for __builtin_fabsf]) | |
221 | AC_TRY_COMPILE([#include <math.h>], | |
222 | [float foo(void) { __builtin_fabsf(0.0); }], | |
223 | use_builtin_fabsf=yes, use_builtin_fabsf=no) | |
224 | AC_MSG_RESULT($use_builtin_fabsf) | |
225 | if test $use_builtin_fabsf = "yes"; then | |
226 | AC_DEFINE(_GLIBCPP_HAS_BUILTIN_FABSF) | |
227 | fi | |
228 | ||
229 | AC_MSG_CHECKING([for __builtin_sqrtf]) | |
230 | AC_TRY_COMPILE([#include <math.h>], | |
231 | [float foo(void) { __builtin_sqrtf(0.0); }], | |
232 | use_builtin_sqrtf=yes, use_builtin_sqrtf=no) | |
233 | AC_MSG_RESULT($use_builtin_sqrtf) | |
234 | if test $use_builtin_sqrtf = "yes"; then | |
235 | AC_DEFINE(_GLIBCPP_HAS_BUILTIN_SQRTF) | |
236 | fi | |
237 | ]) | |
238 | ||
239 | ||
240 | dnl | |
241 | dnl Check to see what architecture we are compiling for. If it's | |
242 | dnl supported, use special hand-crafted routines to provide thread | |
243 | dnl primitives. | |
244 | dnl | |
f3b004d8 BK |
245 | dnl Depending on what is found, select configure/cpu/*/bits/atomicity.h |
246 | dnl If not found, select configure/cpu/generic/bits/atomicity.h | |
b2dad0e3 BK |
247 | dnl |
248 | dnl GLIBCPP_CHECK_CPU | |
249 | AC_DEFUN(GLIBCPP_CHECK_CPU, [ | |
250 | AC_MSG_CHECKING([for cpu primitives directory]) | |
251 | case "$target_cpu" in | |
252 | alpha*) | |
253 | cpu_include_dir="config/cpu/alpha" | |
254 | ;; | |
255 | arm*) | |
256 | cpu_include_dir="config/cpu/arm" | |
257 | ;; | |
258 | i486 | i586 | i686 | i786) | |
259 | cpu_include_dir="config/cpu/i386" | |
260 | ;; | |
261 | powerpc | rs6000) | |
262 | cpu_include_dir="config/cpu/powerpc" | |
263 | ;; | |
264 | sparc64 | ultrasparc) | |
265 | cpu_include_dir="config/cpu/sparc/sparc64" | |
266 | ;; | |
267 | sparc*) | |
268 | cpu_include_dir="config/cpu/sparc/sparc32" | |
269 | ;; | |
270 | *) | |
271 | cpu_include_dir="config/cpu/generic" | |
272 | ;; | |
273 | esac | |
274 | AC_MSG_RESULT($cpu_include_dir) | |
275 | AC_SUBST(cpu_include_dir) | |
276 | ]) | |
277 | ||
278 | ||
279 | dnl | |
280 | dnl Check to see what the underlying c library's interface to ctype looks | |
281 | dnl like. Bits of locale rely on things like isspace, toupper, etc. This | |
282 | dnl stuff makes sure the right bits from the clibrary get called. | |
283 | dnl | |
284 | dnl Depending on what is found, select various configure/*/bits/ctype_base.h | |
285 | dnl Depending on what is found, select various configure/*/ctype.cc | |
286 | dnl | |
287 | dnl GLIBCPP_CHECK_CTYPE | |
288 | AC_DEFUN(GLIBCPP_CHECK_CTYPE, [ | |
289 | AC_CHECK_HEADER(ctype.h, [ | |
290 | ||
291 | dnl If doesn't match any specified, go with defaults. | |
292 | ctype_default=yes | |
293 | ||
294 | dnl Test for <ctype> functionality -- gnu-linux | |
295 | AC_MSG_CHECKING([for gnu-linux <ctype>]) | |
296 | AC_TRY_COMPILE([#include <ctype.h>], | |
297 | [int | |
298 | foo (int a) | |
299 | { return _ISspace + _ISprint + _IScntrl + _ISupper + _ISlower + _ISalpha \ | |
300 | + _ISdigit + _ISpunct + _ISxdigit + _ISalnum + _ISgraph \ | |
301 | + __ctype_tolower[a] + __ctype_toupper[a] + __ctype_b[a];}], \ | |
302 | ctype_linux=yes, ctype_linux=no) | |
303 | AC_MSG_RESULT($ctype_linux) | |
304 | if test $ctype_linux = "yes"; then | |
305 | ctype_include_dir="config/gnu-linux" | |
306 | ctype_default=no | |
307 | fi | |
308 | ||
309 | dnl Test for <ctype> functionality -- solaris 2.6 and 2.7 | |
310 | if test $ctype_default = "yes"; then | |
311 | AC_MSG_CHECKING([for solaris 2.6 or 2.7 <ctype>]) | |
312 | AC_TRY_COMPILE([#include <ctype.h>], | |
313 | [int | |
314 | foo (int a) | |
315 | { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \ | |
316 | + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \ | |
317 | + __trans_lower[a] + __trans_upper[a] + __ctype_mask[a];}], \ | |
318 | ctype_solaris=yes, ctype_solaris=no) | |
319 | AC_MSG_RESULT($ctype_solaris) | |
320 | ||
321 | if test $ctype_solaris = "yes"; then | |
322 | AC_MSG_CHECKING([ for version]) | |
323 | AC_LANG_CPLUSPLUS | |
324 | AC_TRY_COMPILE([#include <ctype.h>], | |
325 | [typedef long* __to_type; __to_type const& _M_toupper = __trans_upper;],\ | |
326 | ctype_solaris26=yes, ctype_solaris26=no) | |
327 | AC_LANG_C | |
328 | if test $ctype_solaris26 = "yes"; then | |
329 | ctype_include_dir="config/solaris/solaris2.6" | |
330 | AC_MSG_RESULT("solaris2.6") | |
331 | ctype_default=no | |
332 | else | |
333 | ctype_include_dir="config/solaris/solaris2.7" | |
334 | AC_MSG_RESULT("solaris2.7") | |
335 | ctype_default=no | |
336 | fi | |
337 | fi | |
338 | fi | |
339 | ||
340 | dnl Test for <ctype> functionality -- solaris 2.5.1 | |
341 | if test $ctype_default = "yes"; then | |
342 | AC_MSG_CHECKING([for solaris 2.5.1 <ctype>]) | |
343 | AC_TRY_COMPILE([#include <ctype.h>], | |
344 | [int | |
345 | foo (int a) | |
346 | { return _U + _L + _N + _S + _P + _C + _X + _B \ | |
347 | + __ctype[a];}], \ | |
348 | ctype_solaris25=yes, ctype_solaris25=no) | |
349 | AC_MSG_RESULT($ctype_solaris25) | |
350 | if test $ctype_solaris25 = "yes"; then | |
351 | ctype_include_dir="config/solaris/solaris2.5" | |
352 | ctype_default=no | |
353 | fi | |
354 | fi | |
355 | ||
356 | dnl Test for <ctype> functionality -- aix | |
357 | if test $ctype_default = "yes"; then | |
358 | AC_MSG_CHECKING([for aix <ctype>]) | |
359 | AC_TRY_COMPILE([#include <ctype.h>], | |
360 | [int | |
361 | foo (int a) | |
362 | { return _ISSPACE + _ISPRINT + _ISCNTRL + _ISUPPER + _ISLOWER + _ISALPHA \ | |
363 | + _ISDIGIT + _ISPUNCT + _ISXDIGIT + _ISALNUM + _ISGRAPH \ | |
364 | + _VALC('a') + _IS('c', 0);}], \ | |
365 | ctype_aix=yes, ctype_aix=no) | |
366 | AC_MSG_RESULT($ctype_aix) | |
367 | if test $ctype_aix = "yes"; then | |
368 | ctype_include_dir="config/aix" | |
369 | ctype_default=no | |
370 | fi | |
371 | fi | |
372 | ||
373 | dnl Test for <ctype> functionality -- newlib | |
374 | if test $ctype_default = "yes"; then | |
375 | AC_MSG_CHECKING([for newlib <ctype>]) | |
376 | AC_TRY_COMPILE([#include <ctype.h>], | |
377 | [int | |
378 | foo (int a) | |
379 | { return _U + _L + _N + _S + _P + _C + _X + _B \ | |
380 | + _ctype_[a];}], \ | |
381 | ctype_newlib=yes, ctype_newlib=no) | |
382 | AC_MSG_RESULT($ctype_newlib) | |
383 | if test $ctype_newlib = "yes"; then | |
384 | ctype_include_dir="config/newlib" | |
385 | ctype_default=no | |
386 | fi | |
387 | fi | |
388 | ||
389 | if test $ctype_default = "yes"; then | |
390 | ctype_include_dir="config/generic" | |
391 | AC_MSG_WARN("Using default ctype headers.") | |
392 | fi | |
393 | AC_SUBST(ctype_include_dir) | |
394 | ]) | |
395 | ]) | |
396 | ||
397 | ||
398 | dnl | |
399 | dnl Check to see what the underlying c library or math library is like. | |
400 | dnl | |
401 | dnl Define HAVE_CARGF etc if "cargf" is found. | |
402 | dnl | |
403 | dnl GLIBCPP_CHECK_MATH_SUPPORT | |
404 | AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ | |
405 | AC_CHECK_LIB(m, sin, libm="-lm") | |
406 | save_LIBS="$LIBS" | |
407 | LIBS="$LIBS $libm" | |
408 | ||
409 | dnl Check for complex versions of math functions of platform. | |
410 | AC_CHECK_HEADERS([complex.h]) | |
411 | AC_REPLACE_MATHFUNCS(ccos ccosf ccosh ccoshf cexp cexpf c_log c_logf \ | |
412 | clog10 clog10f cpow cpowf csin csinf csinh csinhf csqrt csqrtf \ | |
413 | ctan ctanf ctanh ctanhf \ | |
414 | carg cargf nan hypot hypotf atan2f expf copysignf) | |
415 | ||
416 | dnl We compile the long double complex functions only if the function | |
f3b004d8 | 417 | dnl provides the non-complex long double functions. |
b2dad0e3 | 418 | USE_LONG_DOUBLE=no |
f3b004d8 | 419 | AC_CHECK_FUNC(copysignl, |
b2dad0e3 BK |
420 | USE_LONG_DOUBLE=yes |
421 | AC_REPLACE_MATHFUNCS(ccoshl ccosl cexpl cpowl csinhl csinl \ | |
422 | csqrtl ctanhl ctanl cargl hypotl signbitl c_logl clog10l)) | |
423 | AC_SUBST(USE_LONG_DOUBLE) | |
424 | ||
425 | dnl Check to see if basic C math functions have faster float versions. | |
426 | AC_CHECK_FUNCS(modf isnan isnanf isnanl isinf isinff isinfl copysign \ | |
427 | copysignl cosf coshf logf log10f powf sinf sinhf sqrtf tanf tanhf \ | |
428 | strtof strtold fabsf sincos sincosf sincosl finite finite fqfinite \ | |
429 | fpclass qfpclass) | |
430 | ||
431 | #Some runtimes have these functions with a preceding underscore. Please | |
432 | # keep this sync'd with the one above. And if you add any new symbol, | |
433 | # please add the corresponding block in the @BOTTOM@ section of | |
434 | # acconfig.h. | |
435 | AC_CHECK_FUNCS(_modf _isnan _isnanf _isnanl _isinf _isinff _isinfl _copysign \ | |
436 | _copysignl _cosf _coshf _logf _log10f _powf _sinf _sinhf _sqrtf _tanf _tanhf \ | |
437 | _strtof _strtold _fabsf _sincos _sincosf _sincosl _finite _finitef _qfinite \ | |
438 | _fpclass _qfpclass) | |
439 | ||
440 | LIBS="$save_LIBS" | |
441 | ]) | |
442 | ||
443 | ||
444 | dnl | |
445 | dnl Check to see if this target can enable the wchar_t parts of libstdc++. | |
446 | dnl | |
447 | dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found | |
448 | dnl Define _GLIBCPP_NEED_MBSTATE_T if mbstate_t is not in wchar.h | |
449 | dnl Define _GLIBCPP_HAS_WCHAR_MIN_MAX if WCHAR_MIN, WCHAR_MAX in wchar.h | |
450 | dnl | |
451 | dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT | |
452 | AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ | |
453 | AC_CHECK_HEADER(wchar.h,[ | |
454 | dnl Test wchar.h for mbstate_t, which is needed for char_traits and others. | |
455 | AC_MSG_CHECKING([for native mbstate_t]) | |
456 | AC_TRY_COMPILE([#include <wchar.h>], | |
457 | [mbstate_t teststate;], | |
458 | use_native_mbstatet=yes, use_native_mbstatet=no) | |
459 | AC_MSG_RESULT($use_native_mbstatet) | |
460 | if test $use_native_mbstatet = "no"; then | |
461 | AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T) | |
462 | fi | |
463 | ||
464 | dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before | |
465 | dnl numeric_limits can instantiate type_traits<wchar_t> | |
466 | AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) | |
467 | AC_TRY_COMPILE([#include <wchar.h>], | |
468 | [int i = WCHAR_MIN; int j = WCHAR_MAX;], | |
469 | has_wchar_minmax=yes, has_wchar_minmax=no) | |
470 | AC_MSG_RESULT($has_wchar_minmax) | |
471 | if test $has_wchar_minmax = "yes"; then | |
472 | AC_DEFINE(_GLIBCPP_HAS_WCHAR_MIN_MAX) | |
473 | fi | |
474 | ||
475 | # Test wchar.h for WEOF, which is what we use to determine whether | |
476 | # to specialize for wchar_t or not. | |
477 | AC_MSG_CHECKING([for WEOF]) | |
478 | AC_TRY_COMPILE([ | |
479 | #include <wchar.h> | |
480 | #include <stddef.h>], | |
481 | [wint_t i = WEOF;], | |
482 | has_weof=yes, has_weof=no) | |
483 | AC_MSG_RESULT($has_weof) | |
484 | ||
485 | dnl Tests for wide character functions. | |
486 | AC_REPLACE_STRINGFUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset) | |
5d89258a | 487 | AC_SUBST(libinst_wstring_la) |
b2dad0e3 BK |
488 | |
489 | AC_MSG_CHECKING([for wide character support]) | |
490 | if test $has_weof = "yes" && test $has_wchar_minmax = "yes"; then | |
5d89258a | 491 | libinst_wstring_la="libinst-wstring.la" |
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492 | AC_DEFINE(_GLIBCPP_USE_WCHAR_T) |
493 | AC_MSG_RESULT(ok) | |
494 | else | |
5d89258a | 495 | libinst_wstring_la="" |
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496 | AC_MSG_RESULT("not specializing for wchar_t") |
497 | fi | |
498 | ],[ | |
499 | AC_MSG_WARN([<wchar.h> not found]) | |
500 | AC_DEFINE(_GLIBCPP_NEED_MBSTATE_T) | |
501 | ]) | |
502 | ]) | |
503 | ||
504 | ||
505 | dnl | |
506 | dnl Check to see if this version of GNU C++ is afflicted by bugs in | |
507 | dnl __complex__ float support. | |
508 | dnl | |
509 | dnl Define _GLIBCPP_BUGGY_FLOAT_COMPLEX if buggy. | |
510 | dnl | |
511 | dnl GLIBCPP_CHECK_COMPLEX_FLOAT_SUPPORT | |
512 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_FLOAT_SUPPORT, [ | |
513 | AC_REQUIRE([AC_PROG_CXX]) | |
514 | AC_MSG_CHECKING([for GNU C++ __complex__ float support]) | |
515 | AC_CACHE_VAL(glibcpp_cv_float_complex, [ | |
516 | AC_LANG_SAVE | |
517 | AC_LANG_CPLUSPLUS | |
518 | rm -f conftest.h | |
519 | cat > conftest.h <<EOB | |
520 | // | |
521 | // Check for buggy __complex__ that causes ICE in most versions of egcs | |
522 | // and gcc-2.95.x on certain platforms (eg., x86-win32). | |
523 | // | |
524 | // See http://egcs.cygnus.com/ml/gcc-bugs/1999-07/msg00845.html for | |
525 | // more info on the bug itself. | |
526 | // | |
527 | struct | |
528 | float_complex | |
529 | { | |
530 | __complex__ float m_value; | |
531 | float_complex (float = 0.0f, float = 0.0f); | |
532 | float_complex (__complex__ float val) : m_value (val) {} | |
533 | float_complex foo (const float_complex &val) | |
534 | { return float_complex (~val.m_value); } | |
535 | }; | |
536 | EOB | |
537 | AC_TRY_COMPILE([#include "conftest.h"], , | |
538 | glibcpp_cv_float_complex=ok, | |
539 | glibcpp_cv_float_complex=buggy | |
540 | ) | |
541 | AC_LANG_RESTORE | |
542 | ]) | |
543 | AC_MSG_RESULT($glibcpp_cv_float_complex) | |
544 | if test $glibcpp_cv_float_complex = buggy; then | |
545 | AC_DEFINE(_GLIBCPP_BUGGY_FLOAT_COMPLEX) | |
546 | fi | |
547 | ]) | |
548 | ||
549 | ||
550 | dnl | |
551 | dnl | |
552 | dnl Check to see if this version of GNU C++ is afflicted by bugs in | |
553 | dnl __complex__ support.Check for buggy __complex__ that will cause ICE in | |
554 | dnl gcc-2.95.x when using the library, unless we define the default copy | |
555 | dnl ctor in the specializations of complex<>. | |
556 | dnl | |
557 | dnl Define _GLIBCPP_BUGGY_COMPLEX if buggy. | |
558 | dnl | |
559 | dnl GLIBCPP_CHECK_COMPLEX_SUPPORT | |
560 | AC_DEFUN(GLIBCPP_CHECK_COMPLEX_SUPPORT, [ | |
561 | AC_REQUIRE([AC_PROG_CXX]) | |
562 | AC_MSG_CHECKING([for GNU C++ __complex__ support]) | |
563 | AC_CACHE_VAL(glibcpp_cv_complex, [ | |
564 | AC_LANG_SAVE | |
565 | AC_LANG_CPLUSPLUS | |
566 | AC_TRY_COMPILE([struct dcomplex { __complex__ double x; }; \ | |
567 | dcomplex f(const dcomplex& x) { return dcomplex(x); }], \ | |
568 | [ dcomplex x; f(x); ], | |
569 | glibcpp_cv_complex=ok, | |
570 | glibcpp_cv_complex=buggy | |
571 | ) | |
572 | AC_LANG_RESTORE | |
573 | ]) | |
574 | AC_MSG_RESULT($glibcpp_cv_complex) | |
575 | if test $glibcpp_cv_complex = buggy; then | |
576 | AC_DEFINE(_GLIBCPP_BUGGY_COMPLEX) | |
577 | fi | |
578 | ]) | |
579 | ||
580 | ||
581 | dnl | |
582 | dnl Check for certain special build configurations. | |
583 | dnl | |
584 | dnl GLIBCPP_ENABLE_DEBUG | |
585 | dnl --enable-debug sets '-ggdb -O0'. | |
586 | dnl --disable-debug sets '-g' and whatever optimization options the | |
587 | dnl compiler can handle. | |
588 | dnl + Perhaps --enable-maintainer-mode should automatically turn this on? | |
589 | dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...? | |
590 | dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] | |
591 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
592 | dnl defaults to `no'. | |
593 | AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl | |
594 | define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
595 | AC_ARG_ENABLE(debug, | |
596 | changequote(<<, >>)dnl | |
597 | << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], | |
598 | changequote([, ])dnl | |
599 | [case "$enableval" in | |
600 | yes) enable_debug=yes ;; | |
601 | no) enable_debug=no ;; | |
602 | *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; | |
603 | esac], | |
604 | enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl | |
605 | dnl Option parsed, now set things appropriately | |
606 | case "$enable_debug" in | |
f3b004d8 BK |
607 | yes) |
608 | case "$target_cpu" in | |
609 | alpha*) | |
610 | DEBUGFLAGS='-O0 -gdwarf-2' | |
611 | ;; | |
612 | *) | |
613 | DEBUGFLAGS='-O0 -g' | |
614 | ;; | |
615 | esac | |
616 | ;; | |
617 | no) | |
618 | DEBUGFLAGS='-g' | |
619 | ;; | |
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620 | esac |
621 | AC_SUBST(DEBUGFLAGS) | |
622 | ]) | |
623 | ||
624 | ||
625 | dnl | |
626 | dnl Check for certain special build configurations. | |
627 | dnl | |
628 | dnl GLIBCPP_ENABLE_NAMESPACES | |
629 | dnl --enable-namespaces sets '-fhonor-std' and defines _GLIBCPP_USE_NAMESPACES | |
630 | dnl --disable-namespaces sets '-fno-honor-std' (the macro should be | |
631 | dnl undefined by default in whatever.h.in). | |
632 | dnl + Eventually, this will go away. | |
633 | dnl + Usage: GLIBCPP_ENABLE_NAMESPACES[(DEFAULT)] | |
634 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
635 | dnl defaults to `no'. | |
636 | AC_DEFUN(GLIBCPP_ENABLE_NAMESPACES, [dnl | |
637 | define([GLIBCPP_ENABLE_NAMESPACES_DEFAULT], ifelse($1, yes, yes, no))dnl | |
638 | AC_ARG_ENABLE(namespaces, | |
639 | changequote(<<, >>)dnl | |
640 | << --enable-namespaces turns on 'std' [default=>>GLIBCPP_ENABLE_NAMESPACES_DEFAULT], | |
641 | changequote([, ])dnl | |
642 | [case "$enableval" in | |
643 | yes) enable_namespaces=yes ;; | |
644 | no) enable_namespaces=no ;; | |
645 | *) AC_MSG_ERROR([Unknown argument to enable/disable namespaces]) ;; | |
646 | esac], | |
647 | enable_namespaces=GLIBCPP_ENABLE_NAMESPACES_DEFAULT)dnl | |
648 | dnl Option parsed, now set things appropriately | |
649 | case "$enable_namespaces" in | |
650 | yes) NAMESPACES='-fhonor-std' | |
651 | AC_DEFINE(_GLIBCPP_USE_NAMESPACES) | |
652 | ;; | |
653 | no) NAMESPACES='-fno-honor-std' | |
654 | ;; | |
655 | esac | |
656 | AC_SUBST(NAMESPACES) | |
657 | ]) | |
658 | ||
659 | ||
660 | dnl | |
661 | dnl Check for instructions to automatically rebuild libgcc.a. Requires, | |
662 | dnl of course, the location of the gcc objdir. Note that if --disable- | |
663 | dnl namespaces is in effect, rebuilding libgcc.a is an expensive no-op. | |
664 | dnl | |
665 | dnl GLIBCPP_ENABLE_RELIBGCC | |
666 | dnl --enable-libgcc-rebuild=/absolute/path/to/gcc/objdir sets GCC_OBJDIR | |
667 | dnl (presumably in the top-level Makefile) to /absol.../objdir | |
668 | dnl --disable-libgcc-rebuild will not touch libgcc.a at all (maybe print | |
669 | dnl a warning if this is given along with --enable-namespaces), by | |
670 | dnl setting GCC_OBJDIR to `no'. | |
671 | dnl + Doing this by default is going to be interesting. What default | |
672 | dnl "on" value can there be? | |
673 | dnl + Usage: GLIBCPP_ENABLE_RELIBGCC[(DEFAULT)] | |
674 | dnl The default path should be ../.. if bundled with GCC source. | |
675 | dnl If ommitted, it defaults to `no'. | |
676 | dnl | |
677 | AC_DEFUN(GLIBCPP_ENABLE_RELIBGCC, [dnl | |
678 | define([GLIBCPP_ENABLE_RELIBGCC_DEFAULT], ifelse($1,, no, $1))dnl | |
679 | AC_ARG_ENABLE(libgcc-rebuild, | |
680 | changequote(<<, >>)dnl | |
681 | << --enable-libgcc-rebuild=DIR also rebuild libgcc.a; DIR is | |
682 | the GCC objdir; see install.html>>, | |
683 | changequote([, ])dnl | |
684 | [case "$enableval" in | |
685 | yes) AC_MSG_ERROR([--enable-libgcc-rebuild needs a pathname]) ;; | |
686 | no) enable_libgcc_rebuild=no ;; | |
687 | *) if test -d "$enableval" && test -d "${enableval}/gcc" && \ | |
688 | test -d "${enableval}/libiberty" | |
689 | then | |
690 | enable_libgcc_rebuild="$enableval" | |
691 | else | |
692 | AC_MSG_ERROR(["$enableval" does not appear to be the GCC objdir]) | |
693 | fi | |
694 | ;; | |
695 | esac], | |
696 | enable_libgcc_rebuild=GLIBCPP_ENABLE_RELIBGCC_DEFAULT)dnl | |
697 | GCC_OBJDIR="$enable_libgcc_rebuild" | |
698 | AC_SUBST(GCC_OBJDIR) | |
699 | ]) | |
700 | ||
701 | ||
702 | dnl | |
703 | dnl Check for certain special build configurations. | |
704 | dnl | |
705 | dnl GLIBCPP_ENABLE_CSTDIO | |
706 | dnl --enable-cstdio=libio sets config/c_io_libio.h and friends | |
707 | dnl | |
708 | dnl default is libio | |
709 | dnl | |
710 | AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [ | |
711 | AC_MSG_CHECKING([for cstdio to use]) | |
712 | AC_ARG_ENABLE(cstdio, | |
713 | [ --enable-cstdio enable GNU libio for target io package. (default) | |
714 | --enable-cstdio=LIB use LIB target-speific io package.], | |
715 | if test x$enable_cstdio = xno; then | |
716 | enable_cstdio=libio | |
717 | fi, | |
718 | enable_cstdio=libio) | |
719 | ||
720 | enable_cstdio_flag=$enable_cstdio | |
721 | ||
722 | dnl Check if a valid thread package | |
723 | case x${enable_cstdio_flag} in | |
724 | xlibio | x | xno | xnone | xyes) | |
725 | # default | |
726 | CSTDIO_H=c_io_libio.h | |
727 | CSTDIO_CC=c_io_libio.cc | |
728 | AC_MSG_RESULT(libio) | |
729 | ||
730 | # see if we are on a system with libio native (ie, linux) | |
731 | AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no) | |
732 | if test $has_libio = "yes"; then | |
733 | BUILD_LIBIO_INCLUDE= | |
734 | need_libio=no | |
735 | else | |
736 | BUILD_LIBIO_INCLUDE='-I../libio' | |
737 | need_libio=yes | |
738 | fi | |
739 | AC_SUBST(BUILD_LIBIO_INCLUDE) | |
f3b004d8 BK |
740 | |
741 | # see if the _G_config.h header needs to be built. | |
742 | # NB: This replaces the _G_CONFIG_H machinery in libio-v2 | |
743 | AC_CHECK_HEADER(_G_config.h, has_gconf_h=yes, has_gconf_h=no) | |
744 | AM_CONDITIONAL(GLIBCPP_NEED_LIBIO_CONFIG_H, test "$has_gconf_h" = no) | |
b2dad0e3 BK |
745 | ;; |
746 | xwince) | |
747 | CSTDIO_H=c_io_wince.h | |
748 | CSTDIO_CC=c_io_wince.cc | |
749 | AC_MSG_RESULT(wince) | |
750 | ||
751 | need_libio=no | |
752 | BUILD_LIBIO_INCLUDE= | |
753 | AC_SUBST(BUILD_LIBIO_INCLUDE) | |
754 | ;; | |
755 | *) | |
756 | echo "$enable_cstdio is an unknown io package" 1>&2 | |
757 | exit 1 | |
758 | ;; | |
759 | esac | |
760 | AC_SUBST(CSTDIO_H) | |
761 | AC_SUBST(CSTDIO_CC) | |
762 | AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes) | |
763 | ]) | |
764 | ||
765 | ||
766 | dnl | |
767 | dnl Check for certain special build configurations. | |
768 | dnl | |
769 | dnl GLIBCPP_ENABLE_THREADS | |
770 | dnl --enable-threads=posix sets config/threads-posix.h et. al. | |
771 | dnl | |
772 | dnl default is no threads | |
773 | dnl | |
774 | AC_DEFUN(GLIBCPP_ENABLE_THREADS, [ | |
775 | dnl Note this comes from the gcc/config.in and libjava/config.in | |
776 | dnl Efforts should be made to keep this in sync. | |
777 | AC_MSG_CHECKING([for threads package to use]) | |
778 | AC_ARG_ENABLE(threads, | |
779 | [ --enable-threads enable thread usage for target GCC. | |
780 | --enable-threads=LIB use LIB thread package for target GCC.], | |
781 | if test x$enable_threads = xno; then | |
782 | enable_threads='' | |
783 | fi, | |
784 | enable_threads='') | |
785 | ||
786 | enable_threads_flag=$enable_threads | |
787 | ||
788 | dnl Check if a valid thread package | |
789 | case x${enable_threads_flag} in | |
790 | x | xno | xnone) | |
791 | # No threads | |
792 | target_thread_file='single' | |
793 | ;; | |
794 | xyes) | |
795 | # default | |
796 | target_thread_file='' | |
797 | ;; | |
798 | xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \ | |
799 | xsolaris | xwin32 | xdce | xvxworks) | |
800 | target_thread_file=$enable_threads_flag | |
801 | ;; | |
802 | *) | |
803 | echo "$enable_threads is an unknown thread package" 1>&2 | |
804 | exit 1 | |
805 | ;; | |
806 | esac | |
807 | ||
808 | dnl Check for thread package actually supported in libstdc++ | |
809 | case "$target_thread_file" in | |
810 | no | none | single) | |
811 | THREADS=none | |
812 | ;; | |
813 | posix | pthreads) | |
814 | THREADS=posix | |
815 | case "$host" in | |
816 | *-*-linux*) | |
817 | ;; | |
818 | esac | |
819 | ;; | |
820 | decosf1 | irix | mach | os2 | solaris | win32 | dce | vxworks) | |
821 | AC_MSG_ERROR(thread package $THREADS not yet supported) | |
822 | ;; | |
823 | *) | |
824 | AC_MSG_ERROR($THREADS is an unknown thread package) | |
825 | ;; | |
826 | esac | |
827 | AC_MSG_RESULT($THREADS) | |
828 | ||
829 | THREADLIBS= | |
830 | THREADINCS= | |
831 | THREADDEPS= | |
832 | THREADOBJS= | |
833 | THREADH= | |
834 | THREADSPEC= | |
835 | case "$THREADS" in | |
836 | posix) | |
837 | AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) | |
838 | THREADLIBS=-lpthread | |
839 | THREADSPEC=-lpthread | |
840 | dnl Not presently used | |
841 | dnl THREADOBJS=threads-posix.lo | |
842 | THREADH=threads-posix.h | |
843 | ;; | |
844 | none) | |
845 | dnl Not presently used | |
846 | dnl THREADOBJS=threads-no.lo | |
847 | THREADH=threads-no.h | |
848 | ;; | |
849 | esac | |
850 | AC_SUBST(THREADLIBS) | |
851 | AC_SUBST(THREADINCS) | |
852 | AC_SUBST(THREADDEPS) | |
853 | AC_SUBST(THREADOBJS) | |
854 | AC_SUBST(THREADSPEC) | |
855 | ]) | |
856 | ||
857 | ||
858 | dnl | |
859 | dnl Check for certain special build configurations. | |
860 | dnl | |
861 | dnl GLIBCPP_ENABLE_LONG_LONG | |
862 | dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG | |
863 | dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined | |
864 | dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)] | |
865 | dnl Where DEFAULT is either `yes' or `no'. If ommitted, it | |
866 | dnl defaults to `no'. | |
867 | dnl | |
868 | dnl GLIBCPP_ENABLE_LONG_LONG | |
869 | AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl | |
870 | define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl | |
871 | AC_ARG_ENABLE(long-long, | |
872 | changequote(<<, >>)dnl | |
873 | <<--enable-long_long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT], | |
874 | changequote([, ])dnl | |
875 | [case "$enableval" in | |
876 | yes) enable_long_long=yes ;; | |
877 | no) enable_long_long=no ;; | |
878 | *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;; | |
879 | esac], | |
880 | enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl | |
881 | dnl Option parsed, now set things appropriately | |
882 | case "$enable_long_long" in | |
883 | yes) AC_DEFINE(_GLIBCPP_USE_LONG_LONG) | |
884 | ;; | |
885 | esac | |
886 | ]) | |
887 | ||
888 | ||
889 | ||
890 | ||
891 | ||
892 | ||
893 | ||
894 | ||
895 | ||
896 | ||
897 | ||
898 |