1 # intl.m4 serial 29 (gettext-0.19)
2 dnl Copyright (C) 1995-2014, 2016 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl This file can be used in projects which are not available under
8 dnl the GNU General Public License or the GNU Library General Public
9 dnl License but which still want to provide support for the GNU gettext
11 dnl Please note that the actual code of the GNU gettext library is covered
12 dnl by the GNU Library General Public License, and the rest of the GNU
13 dnl gettext package is covered by the GNU General Public License.
14 dnl They are *not* in the public domain.
17 dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
18 dnl Bruno Haible <haible@clisp.cons.org>, 2000-2009.
22 dnl Checks for all prerequisites of the intl subdirectory,
23 dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
24 dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
25 AC_DEFUN([AM_INTL_SUBDIR],
27 AC_REQUIRE([AC_PROG_INSTALL])dnl
28 AC_REQUIRE([AC_PROG_MKDIR_P])dnl
29 AC_REQUIRE([AC_PROG_CC])dnl
30 AC_REQUIRE([AC_CANONICAL_HOST])dnl
31 AC_REQUIRE([gt_GLIBC2])dnl
32 AC_REQUIRE([AC_PROG_RANLIB])dnl
33 AC_REQUIRE([gl_VISIBILITY])dnl
34 AC_REQUIRE([gt_INTL_SUBDIR_CORE])dnl
35 AC_REQUIRE([AC_TYPE_LONG_LONG_INT])dnl
36 AC_REQUIRE([gt_TYPE_WCHAR_T])dnl
37 AC_REQUIRE([gt_TYPE_WINT_T])dnl
38 AC_REQUIRE([gl_AC_HEADER_INTTYPES_H])
39 AC_REQUIRE([gt_TYPE_INTMAX_T])
40 AC_REQUIRE([gt_PRINTF_POSIX])
41 AC_REQUIRE([gl_GLIBC21])dnl
42 AC_REQUIRE([gl_XSIZE])dnl
43 AC_REQUIRE([gl_FCNTL_O_FLAGS])dnl
44 AC_REQUIRE([gt_INTL_MACOSX])dnl
45 AC_REQUIRE([gl_EXTERN_INLINE])dnl
46 AC_REQUIRE([gt_GL_ATTRIBUTE])dnl
48 dnl Support for automake's --enable-silent-rules.
49 case "$enable_silent_rules" in
50 yes) INTL_DEFAULT_VERBOSITY=0;;
51 no) INTL_DEFAULT_VERBOSITY=1;;
52 *) INTL_DEFAULT_VERBOSITY=1;;
54 AC_SUBST([INTL_DEFAULT_VERBOSITY])
56 AC_CHECK_TYPE([ptrdiff_t], ,
57 [AC_DEFINE([ptrdiff_t], [long],
58 [Define as the type of the result of subtracting two pointers, if the system doesn't define it.])
60 AC_CHECK_HEADERS([features.h stddef.h stdlib.h string.h])
61 AC_CHECK_FUNCS([asprintf fwprintf newlocale putenv setenv setlocale \
62 snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb])
64 dnl Use the _snprintf function only if it is declared (because on NetBSD it
65 dnl is defined as a weak alias of snprintf; we prefer to use the latter).
66 AC_CHECK_DECLS([_snprintf, _snwprintf], , , [#include <stdio.h>])
68 dnl Use the *_unlocked functions only if they are declared.
69 dnl (because some of them were defined without being declared in Solaris
70 dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
71 dnl on Solaris 2.5.1 to run on Solaris 2.6).
72 AC_CHECK_DECLS([getc_unlocked], , , [#include <stdio.h>])
74 case $gt_cv_func_printf_posix in
75 *yes) HAVE_POSIX_PRINTF=1 ;;
76 *) HAVE_POSIX_PRINTF=0 ;;
78 AC_SUBST([HAVE_POSIX_PRINTF])
79 if test "$ac_cv_func_asprintf" = yes; then
84 AC_SUBST([HAVE_ASPRINTF])
85 if test "$ac_cv_func_snprintf" = yes; then
90 AC_SUBST([HAVE_SNPRINTF])
91 if test "$ac_cv_func_newlocale" = yes; then
96 AC_SUBST([HAVE_NEWLOCALE])
97 if test "$ac_cv_func_wprintf" = yes; then
102 AC_SUBST([HAVE_WPRINTF])
107 dnl Compilation on mingw and Cygwin needs special Makefile rules, because
108 dnl 1. when we install a shared library, we must arrange to export
109 dnl auxiliary pointer variables for every exported variable,
110 dnl 2. when we install a shared library and a static library simultaneously,
111 dnl the include file specifies __declspec(dllimport) and therefore we
112 dnl must arrange to define the auxiliary pointer variables for the
113 dnl exported variables _also_ in the static library.
114 if test "$enable_shared" = yes; then
116 mingw* | cygwin*) is_woe32dll=yes ;;
122 WOE32DLL=$is_woe32dll
125 dnl On mingw and Cygwin, we can activate special Makefile rules which add
126 dnl version information to the shared libraries and executables.
128 mingw* | cygwin*) is_woe32=yes ;;
133 if test $WOE32 = yes; then
134 dnl Check for a program that compiles Windows resource files.
135 AC_CHECK_TOOL([WINDRES], [windres])
138 dnl Determine whether when creating a library, "-lc" should be passed to
139 dnl libtool or not. On many platforms, it is required for the libtool option
140 dnl -no-undefined to work. On HP-UX, however, the -lc - stored by libtool
141 dnl in the *.la files - makes it impossible to create multithreaded programs,
142 dnl because libtool also reorders the -lc to come before the -pthread, and
143 dnl this disables pthread_create() <http://docs.hp.com/en/1896/pthreads.html>.
150 dnl Rename some macros and functions used for locking.
152 #define __libc_lock_t gl_lock_t
153 #define __libc_lock_define gl_lock_define
154 #define __libc_lock_define_initialized gl_lock_define_initialized
155 #define __libc_lock_init gl_lock_init
156 #define __libc_lock_lock gl_lock_lock
157 #define __libc_lock_unlock gl_lock_unlock
158 #define __libc_lock_recursive_t gl_recursive_lock_t
159 #define __libc_lock_define_recursive gl_recursive_lock_define
160 #define __libc_lock_define_initialized_recursive gl_recursive_lock_define_initialized
161 #define __libc_lock_init_recursive gl_recursive_lock_init
162 #define __libc_lock_lock_recursive gl_recursive_lock_lock
163 #define __libc_lock_unlock_recursive gl_recursive_lock_unlock
164 #define glthread_in_use libintl_thread_in_use
165 #define glthread_lock_init_func libintl_lock_init_func
166 #define glthread_lock_lock_func libintl_lock_lock_func
167 #define glthread_lock_unlock_func libintl_lock_unlock_func
168 #define glthread_lock_destroy_func libintl_lock_destroy_func
169 #define glthread_rwlock_init_multithreaded libintl_rwlock_init_multithreaded
170 #define glthread_rwlock_init_func libintl_rwlock_init_func
171 #define glthread_rwlock_rdlock_multithreaded libintl_rwlock_rdlock_multithreaded
172 #define glthread_rwlock_rdlock_func libintl_rwlock_rdlock_func
173 #define glthread_rwlock_wrlock_multithreaded libintl_rwlock_wrlock_multithreaded
174 #define glthread_rwlock_wrlock_func libintl_rwlock_wrlock_func
175 #define glthread_rwlock_unlock_multithreaded libintl_rwlock_unlock_multithreaded
176 #define glthread_rwlock_unlock_func libintl_rwlock_unlock_func
177 #define glthread_rwlock_destroy_multithreaded libintl_rwlock_destroy_multithreaded
178 #define glthread_rwlock_destroy_func libintl_rwlock_destroy_func
179 #define glthread_recursive_lock_init_multithreaded libintl_recursive_lock_init_multithreaded
180 #define glthread_recursive_lock_init_func libintl_recursive_lock_init_func
181 #define glthread_recursive_lock_lock_multithreaded libintl_recursive_lock_lock_multithreaded
182 #define glthread_recursive_lock_lock_func libintl_recursive_lock_lock_func
183 #define glthread_recursive_lock_unlock_multithreaded libintl_recursive_lock_unlock_multithreaded
184 #define glthread_recursive_lock_unlock_func libintl_recursive_lock_unlock_func
185 #define glthread_recursive_lock_destroy_multithreaded libintl_recursive_lock_destroy_multithreaded
186 #define glthread_recursive_lock_destroy_func libintl_recursive_lock_destroy_func
187 #define glthread_once_func libintl_once_func
188 #define glthread_once_singlethreaded libintl_once_singlethreaded
189 #define glthread_once_multithreaded libintl_once_multithreaded
194 dnl Checks for the core files of the intl subdirectory:
201 dnl hash-string.h hash-string.c
203 dnl libgnuintl.h.in (except the *printf stuff)
208 dnl plural-exp.h plural-exp.c
210 dnl Used by libglocale.
211 AC_DEFUN([gt_INTL_SUBDIR_CORE],
213 AC_REQUIRE([AC_C_INLINE])dnl
214 AC_REQUIRE([AC_TYPE_SIZE_T])dnl
215 AC_REQUIRE([gl_AC_HEADER_STDINT_H])
216 AC_REQUIRE([AC_FUNC_ALLOCA])dnl
217 AC_REQUIRE([AC_FUNC_MMAP])dnl
218 AC_REQUIRE([gt_INTDIV0])dnl
219 AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])dnl
220 AC_REQUIRE([gt_INTTYPES_PRI])dnl
221 AC_REQUIRE([gl_LOCK])dnl
225 [[int foo (int a) { a = __builtin_expect (a, 10); return a == 10 ? 0 : 1; }]],
227 [AC_DEFINE([HAVE_BUILTIN_EXPECT], [1],
228 [Define to 1 if the compiler understands __builtin_expect.])])
230 AC_CHECK_HEADERS([argz.h inttypes.h limits.h unistd.h sys/param.h])
231 AC_CHECK_FUNCS([getcwd getegid geteuid getgid getuid mempcpy munmap \
232 stpcpy strcasecmp strdup strtoul tsearch uselocale argz_count \
233 argz_stringify argz_next __fsetlocking])
235 dnl Solaris 12 provides getlocalename_l, while Illumos doesn't have
236 dnl it nor the equivalent.
237 if test $ac_cv_func_uselocale = yes; then
238 AC_CHECK_FUNCS([getlocalename_l])
241 dnl Use the *_unlocked functions only if they are declared.
242 dnl (because some of them were defined without being declared in Solaris
243 dnl 2.5.1 but were removed in Solaris 2.6, whereas we want binaries built
244 dnl on Solaris 2.5.1 to run on Solaris 2.6).
245 AC_CHECK_DECLS([feof_unlocked, fgets_unlocked], , , [#include <stdio.h>])
249 dnl intl/plural.c is generated from intl/plural.y. It requires bison,
250 dnl because plural.y uses bison specific features. It requires at least
251 dnl bison-2.7 for %define api.pure.
252 dnl bison is only needed for the maintainer (who touches plural.y). But in
253 dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
254 dnl the rule in general Makefile. Now, some people carelessly touch the
255 dnl files or have a broken "make" program, hence the plural.c rule will
256 dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
257 dnl present or too old.
258 AC_CHECK_PROGS([INTLBISON], [bison])
259 if test -z "$INTLBISON"; then
262 dnl Found it, now check the version.
263 AC_MSG_CHECKING([version of bison])
264 changequote(<<,>>)dnl
265 ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
266 case $ac_prog_version in
267 '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
270 ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
271 *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
273 AC_MSG_RESULT([$ac_prog_version])
275 if test $ac_verc_fail = yes; then
280 dnl Copies _GL_UNUSED and _GL_ATTRIBUTE_PURE definitions from
281 dnl gnulib-common.m4 as a fallback, if the project isn't using Gnulib.
282 AC_DEFUN([gt_GL_ATTRIBUTE], [
283 m4_ifndef([gl_[]COMMON],
284 AH_VERBATIM([gt_gl_attribute],
285 [/* Define as a marker that can be attached to declarations that might not
286 be used. This helps to reduce warnings, such as from
287 GCC -Wunused-parameter. */
289 # if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
290 # define _GL_UNUSED __attribute__ ((__unused__))
296 /* The __pure__ attribute was added in gcc 2.96. */
297 #ifndef _GL_ATTRIBUTE_PURE
298 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
299 # define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
301 # define _GL_ATTRIBUTE_PURE /* empty */