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1ec601bf FXC |
1 | # Process this file with autoconf to produce a configure script, like so: |
2 | # aclocal && autoconf && autoheader && automake | |
3 | ||
4 | AC_PREREQ(2.64) | |
5 | AC_INIT([GCC Quad-precision Math Library], 0.1,,[libquadmath]) | |
6 | AC_CONFIG_HEADER(config.h) | |
7 | ||
8 | # Gets build, host, target, *_vendor, *_cpu, *_os, etc. | |
9 | # | |
10 | # You will slowly go insane if you do not grok the following fact: when | |
11 | # building this library, the top-level /target/ becomes the library's /host/. | |
12 | # | |
13 | # configure then causes --target to default to --host, exactly like any | |
14 | # other package using autoconf. Therefore, 'target' and 'host' will | |
15 | # always be the same. This makes sense both for native and cross compilers | |
16 | # just think about it for a little while. :-) | |
17 | # | |
18 | # Also, if this library is being configured as part of a cross compiler, the | |
19 | # top-level configure script will pass the "real" host as $with_cross_host. | |
20 | # | |
21 | # Do not delete or change the following two lines. For why, see | |
22 | # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html | |
23 | AC_CANONICAL_SYSTEM | |
fabfcf5e KT |
24 | ACX_NONCANONICAL_TARGET |
25 | ||
ee5f0523 MK |
26 | AM_ENABLE_MULTILIB(, ..) |
27 | ||
1ec601bf | 28 | target_alias=${target_alias-$host_alias} |
fabfcf5e | 29 | AC_SUBST(target_alias) |
1ec601bf | 30 | |
a6098a28 | 31 | AM_INIT_AUTOMAKE([1.9.0 foreign subdir-objects no-dist -Wall -Wno-override -Werror]) |
1ec601bf | 32 | |
1ec601bf FXC |
33 | AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
34 | AC_ARG_ENABLE(version-specific-runtime-libs, | |
4c993c44 TB |
35 | AS_HELP_STRING([--enable-version-specific-runtime-libs], |
36 | [specify that runtime libraries should be installed in a compiler-specific directory]), | |
1ec601bf FXC |
37 | [case "$enableval" in |
38 | yes) version_specific_libs=yes ;; | |
39 | no) version_specific_libs=no ;; | |
40 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
41 | esac], | |
42 | [version_specific_libs=no]) | |
43 | AC_MSG_RESULT($version_specific_libs) | |
44 | ||
fabfcf5e | 45 | GCC_NO_EXECUTABLES |
1ec601bf | 46 | |
1d92226b JJ |
47 | AC_USE_SYSTEM_EXTENSIONS |
48 | ||
4c993c44 TB |
49 | # See if makeinfo has been installed and is modern enough |
50 | # that we can use it. | |
51 | ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], | |
52 | [GNU texinfo.* \([0-9][0-9.]*\)], | |
53 | [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) | |
54 | AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") | |
55 | ||
19e30111 | 56 | ACX_BUGURL([https://gcc.gnu.org/bugs/]) |
4c993c44 | 57 | |
1ec601bf FXC |
58 | # Configure libtool |
59 | AM_PROG_LIBTOOL | |
7de6ba7a | 60 | ACX_LT_HOST_FLAGS |
1ec601bf FXC |
61 | AC_SUBST(enable_shared) |
62 | AC_SUBST(enable_static) | |
63 | ||
64 | AM_MAINTAINER_MODE | |
1ec601bf | 65 | |
fabfcf5e KT |
66 | AC_LANG_C |
67 | # The same as in boehm-gc and libstdc++. Have to borrow it from there. | |
68 | # We must force CC to /not/ be precious variables; otherwise | |
69 | # the wrong, non-multilib-adjusted value will be used in multilibs. | |
70 | # As a side effect, we have to subst CFLAGS ourselves. | |
71 | ||
72 | m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) | |
73 | m4_define([_AC_ARG_VAR_PRECIOUS],[]) | |
74 | AC_PROG_CC | |
75 | m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) | |
76 | ||
77 | AC_SUBST(CFLAGS) | |
78 | ||
79 | AM_PROG_CC_C_O | |
80 | ||
81 | if test "x$GCC" != "xyes"; then | |
82 | AC_MSG_ERROR([libquadmath must be built with GCC]) | |
83 | fi | |
84 | AC_PROG_CPP | |
85 | ||
1ec601bf FXC |
86 | # Calculate toolexeclibdir |
87 | # Also toolexecdir, though it's only used in toolexeclibdir | |
88 | case ${version_specific_libs} in | |
89 | yes) | |
90 | # Need the gcc compiler version to know where to install libraries | |
91 | # and header files if --enable-version-specific-runtime-libs option | |
92 | # is selected. | |
93 | toolexecdir='$(libdir)/gcc/$(target_alias)' | |
94 | toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' | |
95 | ;; | |
96 | no) | |
97 | if test -n "$with_cross_host" && | |
98 | test x"$with_cross_host" != x"no"; then | |
99 | # Install a library built with a cross compiler in tooldir, not libdir. | |
100 | toolexecdir='$(exec_prefix)/$(target_alias)' | |
101 | toolexeclibdir='$(toolexecdir)/lib' | |
102 | else | |
103 | toolexecdir='$(libdir)/gcc-lib/$(target_alias)' | |
104 | toolexeclibdir='$(libdir)' | |
105 | fi | |
106 | multi_os_directory=`$CC -print-multi-os-directory` | |
107 | case $multi_os_directory in | |
108 | .) ;; # Avoid trailing /. | |
109 | *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; | |
110 | esac | |
111 | ;; | |
112 | esac | |
113 | AC_SUBST(toolexecdir) | |
114 | AC_SUBST(toolexeclibdir) | |
115 | ||
d2995f21 | 116 | AC_CHECK_HEADERS(fenv.h langinfo.h locale.h wchar.h wctype.h limits.h ctype.h printf.h errno.h) |
5a09d908 | 117 | LIBQUAD_CHECK_MATH_H_SIGNGAM |
e8d42d28 | 118 | |
6f468984 TB |
119 | # If available, sqrtl and cbrtl speed up the calculation - |
120 | # but they are not required | |
121 | if test x$gcc_no_link != xyes; then | |
122 | AC_CHECK_LIB([m],[sqrtl],[AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl])]) | |
123 | AC_CHECK_LIB([m],[cbrtl],[AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl])]) | |
e8d42d28 JJ |
124 | AC_CHECK_LIB([m],[feholdexcept],[AC_DEFINE([HAVE_FEHOLDEXCEPT],[1],[libm includes feholdexcept])]) |
125 | AC_CHECK_LIB([m],[fesetround],[AC_DEFINE([HAVE_FESETROUND],[1],[libm includes fesetround])]) | |
126 | AC_CHECK_LIB([m],[feupdateenv],[AC_DEFINE([HAVE_FEUPDATEENV],[1],[libm includes feupdateenv])]) | |
127 | AC_CHECK_LIB([m],[fesetenv],[AC_DEFINE([HAVE_FESETENV],[1],[libm includes fesetenv])]) | |
128 | AC_CHECK_LIB([m],[fetestexcept],[AC_DEFINE([HAVE_FETESTEXCEPT],[1],[libm includes fetestexcept])]) | |
a855debf | 129 | AC_CHECK_FUNCS(strtoull) |
6f468984 TB |
130 | else |
131 | if test "x$ac_cv_lib_m_sqrtl" = x""yes; then | |
132 | AC_DEFINE([HAVE_SQRTL],[1],[libm includes sqrtl]) | |
133 | fi | |
134 | if test "x$ac_cv_lib_m_cbrtl" = x""yes; then | |
135 | AC_DEFINE([HAVE_CBRTL],[1],[libm includes cbrtl]) | |
136 | fi | |
e8d42d28 JJ |
137 | if test "x$ac_cv_lib_m_feholdexcept" = x""yes; then |
138 | AC_DEFINE([HAVE_FEHOLDEXCEPT],[1],[libm includes feholdexcept]) | |
139 | fi | |
140 | if test "x$ac_cv_lib_m_fesetround" = x""yes; then | |
141 | AC_DEFINE([HAVE_FESETROUND],[1],[libm includes fesetround]) | |
142 | fi | |
143 | if test "x$ac_cv_lib_m_feupdateenv" = x""yes; then | |
144 | AC_DEFINE([HAVE_FEUPDATEENV],[1],[libm includes feupdateenv]) | |
145 | fi | |
146 | if test "x$ac_cv_lib_m_fesetenv" = x""yes; then | |
147 | AC_DEFINE([HAVE_FESETENV],[1],[libm includes fesetenv]) | |
148 | fi | |
149 | if test "x$ac_cv_lib_m_fetestexcept" = x""yes; then | |
150 | AC_DEFINE([HAVE_FETESTEXCEPT],[1],[libm includes fetestexcept]) | |
151 | fi | |
6f468984 | 152 | fi |
1ec601bf | 153 | |
1d92226b | 154 | # Check for hidden visibility (copied from libssp). |
49f0e1ba JJ |
155 | saved_CFLAGS="$CFLAGS" |
156 | CFLAGS="$CFLAGS -Werror" | |
1d92226b JJ |
157 | AC_MSG_CHECKING([whether hidden visibility is supported]) |
158 | AC_TRY_COMPILE([ | |
159 | void __attribute__((visibility ("hidden"))) bar (void) {}],, | |
160 | [quadmath_hidden=yes],[quadmath_hidden=no]) | |
161 | AC_MSG_RESULT($quadmath_hidden) | |
162 | if test x$quadmath_hidden = xyes; then | |
163 | AC_DEFINE([HAVE_HIDDEN_VISIBILITY],[1],[__attribute__((visibility ("hidden"))) supported]) | |
164 | fi | |
49f0e1ba | 165 | CFLAGS="$saved_CFLAGS" |
1d92226b | 166 | |
1ec601bf FXC |
167 | # Check for symbol versioning (copied from libssp). |
168 | AC_MSG_CHECKING([whether symbol versioning is supported]) | |
bf382f5f RO |
169 | AC_ARG_ENABLE(symvers, |
170 | AS_HELP_STRING([--disable-symvers], | |
171 | [disable symbol versioning for libquadmath]), | |
172 | quadmath_use_symver=$enableval, | |
173 | quadmath_use_symver=yes) | |
19af62db | 174 | if test "x$quadmath_use_symver" != xno; then |
bf382f5f RO |
175 | if test x$gcc_no_link = xyes; then |
176 | # If we cannot link, we cannot build shared libraries, so do not use | |
177 | # symbol versioning. | |
178 | quadmath_use_symver=no | |
179 | else | |
180 | save_LDFLAGS="$LDFLAGS" | |
181 | LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" | |
182 | cat > conftest.map <<EOF | |
1ec601bf FXC |
183 | FOO_1.0 { |
184 | global: *foo*; bar; local: *; | |
185 | }; | |
186 | EOF | |
bf382f5f RO |
187 | AC_TRY_LINK([int foo;],[],[quadmath_use_symver=gnu],[quadmath_use_symver=no]) |
188 | if test x$quadmath_use_symver = xno; then | |
189 | case "$target_os" in | |
190 | solaris2*) | |
191 | LDFLAGS="$save_LDFLAGS" | |
192 | LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" | |
193 | # Sun ld cannot handle wildcards and treats all entries as undefined. | |
194 | cat > conftest.map <<EOF | |
1ec601bf FXC |
195 | FOO_1.0 { |
196 | global: foo; local: *; | |
197 | }; | |
198 | EOF | |
bf382f5f RO |
199 | AC_TRY_LINK([int foo;],[],[quadmath_use_symver=sun],[quadmath_use_symver=no]) |
200 | ;; | |
201 | esac | |
202 | fi | |
203 | LDFLAGS="$save_LDFLAGS" | |
fabfcf5e | 204 | fi |
1ec601bf | 205 | fi |
1ec601bf FXC |
206 | AC_MSG_RESULT($quadmath_use_symver) |
207 | AM_CONDITIONAL(LIBQUAD_USE_SYMVER, [test "x$quadmath_use_symver" != xno]) | |
208 | AM_CONDITIONAL(LIBQUAD_USE_SYMVER_GNU, [test "x$quadmath_use_symver" = xgnu]) | |
209 | AM_CONDITIONAL(LIBQUAD_USE_SYMVER_SUN, [test "x$quadmath_use_symver" = xsun]) | |
210 | ||
abccc9a9 TB |
211 | AC_CACHE_CHECK([whether __float128 is supported], [libquad_cv_have_float128], |
212 | [GCC_TRY_COMPILE_OR_LINK([ | |
1ec601bf FXC |
213 | typedef _Complex float __attribute__((mode(TC))) __complex128; |
214 | ||
215 | __float128 foo (__float128 x) | |
216 | { | |
217 | ||
218 | __complex128 z1, z2; | |
219 | ||
220 | z1 = x; | |
221 | z2 = x / 7.Q; | |
222 | z2 /= z1; | |
223 | ||
224 | return (__float128) z2; | |
225 | } | |
226 | ||
227 | __float128 bar (__float128 x) | |
228 | { | |
229 | return x * __builtin_huge_valq (); | |
230 | } | |
231 | ],[ | |
232 | foo (1.2Q); | |
233 | bar (1.2Q); | |
234 | ],[ | |
abccc9a9 | 235 | libquad_cv_have_float128=yes |
1ec601bf | 236 | ],[ |
abccc9a9 TB |
237 | libquad_cv_have_float128=no |
238 | ])]) | |
239 | AM_CONDITIONAL(BUILD_LIBQUADMATH, [test "x$libquad_cv_have_float128" = xyes]) | |
1ec601bf | 240 | |
1d92226b JJ |
241 | # Check for printf hook support. |
242 | AC_MSG_CHECKING([whether printf hooks are supported]) | |
243 | AC_TRY_COMPILE([ | |
244 | #include <printf.h> | |
245 | #include <stdarg.h> | |
246 | #include <stdlib.h> | |
247 | extern void flt128_va (void *, va_list *); | |
248 | extern int flt128_ais (const struct printf_info *, size_t, int *, int *); | |
249 | extern int flt128_printf_fp (FILE *, const struct printf_info *, const void *const *); | |
250 | ],[ | |
251 | int pa_flt128 = register_printf_type (flt128_va); | |
252 | int mod_Q = register_printf_modifier (L"Q"); | |
253 | int res = register_printf_specifier ('f', flt128_printf_fp, flt128_ais); | |
12967872 | 254 | struct printf_info info = { .user = -1 }; |
1d92226b JJ |
255 | ], |
256 | [quadmath_printf_hooks=yes],[quadmath_printf_hooks=no]) | |
257 | AC_MSG_RESULT($quadmath_printf_hooks) | |
258 | if test x$quadmath_printf_hooks = xyes; then | |
259 | AC_DEFINE([HAVE_PRINTF_HOOKS],[1],[GNU C Library stype printf hooks supported]) | |
260 | fi | |
261 | ||
262 | # Check for whether locale support for quadmath_snprintf or Q printf hooks | |
263 | # should be provided. | |
d2995f21 | 264 | AC_MSG_CHECKING([whether nl_langinfo should be used]) |
1d92226b JJ |
265 | AC_TRY_COMPILE([#include <langinfo.h>],[ |
266 | const char *s; | |
267 | s = nl_langinfo (DECIMAL_POINT); | |
268 | s = nl_langinfo (MON_DECIMAL_POINT); | |
269 | s = nl_langinfo (GROUPING); | |
270 | s = nl_langinfo (MON_GROUPING); | |
271 | s = nl_langinfo (THOUSANDS_SEP); | |
272 | s = nl_langinfo (MON_THOUSANDS_SEP); | |
d2995f21 JJ |
273 | (void) s; |
274 | ], | |
275 | [quadmath_use_nl_langinfo=yes],[quadmath_use_nl_langinfo=no]) | |
276 | AC_MSG_RESULT($quadmath_use_nl_langinfo) | |
277 | if test x$quadmath_use_nl_langinfo = xyes; then | |
278 | AC_DEFINE([USE_NL_LANGINFO],[1],[whether nl_langinfo should be used]) | |
279 | fi | |
280 | ||
281 | AC_MSG_CHECKING([whether nl_langinfo should be used for wide char locale info]) | |
282 | AC_TRY_COMPILE([#include <langinfo.h>],[ | |
283 | const char *s; | |
1d92226b JJ |
284 | s = nl_langinfo (_NL_NUMERIC_DECIMAL_POINT_WC); |
285 | s = nl_langinfo (_NL_MONETARY_DECIMAL_POINT_WC); | |
286 | s = nl_langinfo (_NL_NUMERIC_THOUSANDS_SEP_WC); | |
287 | s = nl_langinfo (_NL_MONETARY_THOUSANDS_SEP_WC); | |
1d92226b JJ |
288 | (void) s; |
289 | ], | |
d2995f21 JJ |
290 | [quadmath_use_nl_langinfo_wc=yes],[quadmath_use_nl_langinfo_wc=no]) |
291 | AC_MSG_RESULT($quadmath_use_nl_langinfo_wc) | |
292 | if test x$quadmath_use_nl_langinfo_wc = xyes; then | |
293 | AC_DEFINE([USE_NL_LANGINFO_WC],[1],[whether nl_langinfo should be used for wide char locale info]) | |
294 | fi | |
295 | ||
296 | AC_MSG_CHECKING([whether localeconv should be used]) | |
297 | AC_TRY_COMPILE([#include <locale.h>],[ | |
298 | const struct lconv *l = localeconv (); | |
299 | const char *s; | |
300 | s = l->decimal_point; | |
301 | s = l->mon_decimal_point; | |
302 | s = l->grouping; | |
303 | s = l->mon_grouping; | |
304 | s = l->thousands_sep; | |
305 | s = l->mon_thousands_sep; | |
306 | (void) s; | |
307 | ], | |
308 | [quadmath_use_localeconv=yes],[quadmath_use_localeconv=no]) | |
309 | AC_MSG_RESULT($quadmath_use_localeconv) | |
310 | if test x$quadmath_use_localeconv = xyes; then | |
311 | AC_DEFINE([USE_LOCALECONV],[1],[whether localeconv should be used]) | |
1d92226b JJ |
312 | fi |
313 | ||
314 | # Check for whether i18n number rewriting support for quadmath_snprintf | |
315 | # or Q printf hooks should be provided. | |
316 | AC_MSG_CHECKING([whether i18n number rewriting support for quadmath_snprintf should be added]) | |
317 | AC_TRY_COMPILE([#include <langinfo.h> | |
318 | #include <limits.h> | |
319 | #include <string.h> | |
320 | #include <wchar.h> | |
321 | #include <wctype.h>],[ | |
322 | const char *s; | |
323 | char decimal[MB_LEN_MAX]; | |
324 | wctrans_t map = wctrans ("to_outpunct"); | |
325 | wint_t wdecimal = towctrans (L'.', map); | |
326 | mbstate_t state; | |
327 | memset (&state, '\0', sizeof (state)); | |
328 | wcrtomb (decimal, wdecimal, &state); | |
329 | s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_MB); | |
330 | s = nl_langinfo (_NL_CTYPE_OUTDIGIT0_WC); | |
d2995f21 | 331 | s = nl_langinfo (_NL_CTYPE_MB_CUR_MAX); |
1d92226b JJ |
332 | (void) s; |
333 | ], | |
334 | [quadmath_use_i18n_number_h=yes],[quadmath_use_i18n_number_h=no]) | |
335 | AC_MSG_RESULT($quadmath_use_i18n_number_h) | |
336 | if test x$quadmath_use_i18n_number_h = xyes; then | |
337 | AC_DEFINE([USE_I18N_NUMBER_H],[1],[whether i18n number rewriting can be supported]) | |
338 | fi | |
339 | ||
1ec601bf FXC |
340 | AC_CACHE_SAVE |
341 | ||
342 | if test ${multilib} = yes; then | |
343 | multilib_arg="--enable-multilib" | |
344 | else | |
345 | multilib_arg= | |
346 | fi | |
347 | ||
4c993c44 TB |
348 | |
349 | # We would like our source tree to be readonly. However when releases or | |
350 | # pre-releases are generated, the flex/bison generated files as well as the | |
351 | # various formats of manuals need to be included along with the rest of the | |
352 | # sources. Therefore we have --enable-generated-files-in-srcdir to do | |
353 | # just that. | |
354 | AC_MSG_CHECKING(generated-files-in-srcdir) | |
355 | AC_ARG_ENABLE(generated-files-in-srcdir, | |
356 | AS_HELP_STRING([--enable-generated-files-in-srcdir], | |
357 | [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex]), | |
358 | [case "$enableval" in | |
359 | yes) enable_generated_files_in_srcdir=yes ;; | |
360 | no) enable_generated_files_in_srcdir=no ;; | |
361 | *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; | |
362 | esac], | |
363 | [enable_generated_files_in_srcdir=no]) | |
364 | AC_MSG_RESULT($enable_generated_files_in_srcdir) | |
365 | AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) | |
366 | ||
3c36aa6b JJ |
367 | # Determine what GCC version number to use in filesystem paths. |
368 | GCC_BASE_VER | |
4c993c44 | 369 | |
1ec601bf FXC |
370 | AC_CONFIG_FILES(Makefile) |
371 | AC_OUTPUT |