1 # locale_h.m4 serial 15
2 dnl Copyright (C) 2007, 2009-2012 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 and the int_p_*, int_n_*
14 dnl members of 'struct lconv'.
15 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
17 dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
18 AC_REQUIRE([gl_STDDEF_H])
20 AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
21 [gl_cv_header_locale_h_posix2001],
26 int y = sizeof (((struct lconv *) 0)->decimal_point);]],
28 [gl_cv_header_locale_h_posix2001=yes],
29 [gl_cv_header_locale_h_posix2001=no])])
31 dnl Check for <xlocale.h>.
32 AC_CHECK_HEADERS_ONCE([xlocale.h])
33 if test $ac_cv_header_xlocale_h = yes; then
35 dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
36 dnl e.g. on MacOS X 10.5. If <locale.h> does not define locale_t by
37 dnl itself, we assume that <xlocale.h> will do so.
38 AC_CACHE_CHECK([whether locale.h defines locale_t],
39 [gl_cv_header_locale_has_locale_t],
45 [gl_cv_header_locale_has_locale_t=yes],
46 [gl_cv_header_locale_has_locale_t=no])
48 if test $gl_cv_header_locale_has_locale_t = yes; then
49 gl_cv_header_locale_h_needs_xlocale_h=no
51 gl_cv_header_locale_h_needs_xlocale_h=yes
55 gl_cv_header_locale_h_needs_xlocale_h=no
57 AC_SUBST([HAVE_XLOCALE_H])
59 dnl Check whether 'struct lconv' is well-defined.
60 dnl Bionic libc's 'struct lconv' is just a dummy.
61 AC_CACHE_CHECK([whether struct lconv is properly defined],
62 [gl_cv_sys_struct_lconv_ok],
67 int x = sizeof (l.decimal_point);]],
69 [gl_cv_sys_struct_lconv_ok=yes],
70 [gl_cv_sys_struct_lconv_ok=no])
72 if test $gl_cv_sys_struct_lconv_ok = no; then
73 REPLACE_STRUCT_LCONV=1
76 dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
77 gl_NEXT_HEADERS([locale.h])
79 dnl Check for declarations of anything we want to poison if the
80 dnl corresponding gnulib module is not in use.
81 gl_WARN_ON_USE_PREPARE([[#include <locale.h>
82 /* Some systems provide declarations in a non-standard header. */
87 [setlocale duplocale])
90 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
92 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
93 AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
94 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
95 dnl Define it also as a C macro, for the benefit of the unit tests.
96 gl_MODULE_INDICATOR_FOR_TESTS([$1])
99 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
101 GNULIB_SETLOCALE=0; AC_SUBST([GNULIB_SETLOCALE])
102 GNULIB_DUPLOCALE=0; AC_SUBST([GNULIB_DUPLOCALE])
103 dnl Assume proper GNU behavior unless another module says otherwise.
104 HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE])
105 REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE])
106 REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])
107 REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])