1 # locale_h.m4 serial 14
2 dnl Copyright (C) 2007, 2009-2011 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 AC_DEFUN([gl_LOCALE_H],
9 dnl Use AC_REQUIRE here, so that the default behavior below is expanded
10 dnl once only, before all statements that occur in other macros.
11 AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
13 dnl Persuade glibc <locale.h> to define locale_t.
14 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
16 dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
17 AC_REQUIRE([gl_STDDEF_H])
19 AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
20 [gl_cv_header_locale_h_posix2001],
24 int x = LC_MESSAGES;]],
26 [gl_cv_header_locale_h_posix2001=yes],
27 [gl_cv_header_locale_h_posix2001=no])])
29 dnl Check for <xlocale.h>.
30 AC_CHECK_HEADERS_ONCE([xlocale.h])
31 if test $ac_cv_header_xlocale_h = yes; then
33 dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
34 dnl e.g. on MacOS X 10.5. If <locale.h> does not define locale_t by
35 dnl itself, we assume that <xlocale.h> will do so.
36 AC_CACHE_CHECK([whether locale.h defines locale_t],
37 [gl_cv_header_locale_has_locale_t],
43 [gl_cv_header_locale_has_locale_t=yes],
44 [gl_cv_header_locale_has_locale_t=no])
46 if test $gl_cv_header_locale_has_locale_t = yes; then
47 gl_cv_header_locale_h_needs_xlocale_h=no
49 gl_cv_header_locale_h_needs_xlocale_h=yes
53 gl_cv_header_locale_h_needs_xlocale_h=no
55 AC_SUBST([HAVE_XLOCALE_H])
57 dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
58 gl_NEXT_HEADERS([locale.h])
60 dnl Check for declarations of anything we want to poison if the
61 dnl corresponding gnulib module is not in use.
62 gl_WARN_ON_USE_PREPARE([[#include <locale.h>
63 /* Some systems provide declarations in a non-standard header. */
68 [setlocale duplocale])
71 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
73 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
74 AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
75 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
76 dnl Define it also as a C macro, for the benefit of the unit tests.
77 gl_MODULE_INDICATOR_FOR_TESTS([$1])
80 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
82 GNULIB_SETLOCALE=0; AC_SUBST([GNULIB_SETLOCALE])
83 GNULIB_DUPLOCALE=0; AC_SUBST([GNULIB_DUPLOCALE])
84 dnl Assume proper GNU behavior unless another module says otherwise.
85 HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE])
86 REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE])
87 REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])