1# locale_h.m4 serial 24
2dnl Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_LOCALE_H],
8[
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])
12
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])
16
17  dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
18  AC_REQUIRE([gl_STDDEF_H])
19
20  AC_REQUIRE([gl_LOCALE_T])
21
22  dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv'
23  dnl only if _LCONV_C99 is defined.
24  AC_REQUIRE([AC_CANONICAL_HOST])
25  case "$host_os" in
26    solaris*)
27      AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
28      ;;
29  esac
30
31  AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
32    [gl_cv_header_locale_h_posix2001],
33    [AC_COMPILE_IFELSE(
34       [AC_LANG_PROGRAM(
35          [[#include <locale.h>
36            int x = LC_MESSAGES;
37            int y = sizeof (((struct lconv *) 0)->decimal_point);]],
38          [[]])],
39       [gl_cv_header_locale_h_posix2001=yes],
40       [gl_cv_header_locale_h_posix2001=no])])
41
42  dnl Check whether 'struct lconv' is complete.
43  dnl Bionic libc's 'struct lconv' is just a dummy.
44  dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
45  dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
46  AC_CACHE_CHECK([whether struct lconv is properly defined],
47    [gl_cv_sys_struct_lconv_ok],
48    [AC_COMPILE_IFELSE(
49       [AC_LANG_PROGRAM(
50          [[#include <locale.h>
51            struct lconv l;
52            int x = sizeof (l.decimal_point);
53            int y = sizeof (l.int_p_cs_precedes);]],
54          [[]])],
55       [gl_cv_sys_struct_lconv_ok=yes],
56       [gl_cv_sys_struct_lconv_ok=no])
57    ])
58  if test $gl_cv_sys_struct_lconv_ok = no; then
59    dnl On native Windows with MSVC, merely define these member names as macros.
60    dnl This avoids trouble in C++ mode.
61    case "$host_os" in
62      mingw*)
63        AC_EGREP_CPP([Special], [
64#ifdef _MSC_VER
65 Special
66#endif
67          ],
68          [],
69          [REPLACE_STRUCT_LCONV=1])
70        ;;
71      *) REPLACE_STRUCT_LCONV=1 ;;
72    esac
73  fi
74
75  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
76  gl_NEXT_HEADERS([locale.h])
77
78  dnl Check for declarations of anything we want to poison if the
79  dnl corresponding gnulib module is not in use.
80  gl_WARN_ON_USE_PREPARE([[#include <locale.h>
81/* Some systems provide declarations in a non-standard header.  */
82#if HAVE_XLOCALE_H
83# include <xlocale.h>
84#endif
85    ]],
86    [setlocale newlocale duplocale freelocale])
87])
88
89dnl Checks to determine whether the system has the locale_t type,
90dnl and how to obtain it.
91AC_DEFUN([gl_LOCALE_T],
92[
93  dnl Persuade glibc and Solaris <locale.h> to define locale_t.
94  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
95
96  dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
97  dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
98  dnl itself, we assume that <xlocale.h> will do so.
99  AC_CACHE_CHECK([whether locale.h defines locale_t],
100    [gl_cv_header_locale_has_locale_t],
101    [AC_COMPILE_IFELSE(
102       [AC_LANG_PROGRAM(
103          [[#include <locale.h>
104            locale_t x;]],
105          [[]])],
106       [gl_cv_header_locale_has_locale_t=yes],
107       [gl_cv_header_locale_has_locale_t=no])
108    ])
109
110  dnl Check for <xlocale.h>.
111  AC_CHECK_HEADERS_ONCE([xlocale.h])
112  if test $ac_cv_header_xlocale_h = yes; then
113    HAVE_XLOCALE_H=1
114    if test $gl_cv_header_locale_has_locale_t = yes; then
115      gl_cv_header_locale_h_needs_xlocale_h=no
116    else
117      gl_cv_header_locale_h_needs_xlocale_h=yes
118    fi
119    HAVE_LOCALE_T=1
120  else
121    HAVE_XLOCALE_H=0
122    gl_cv_header_locale_h_needs_xlocale_h=no
123    if test $gl_cv_header_locale_has_locale_t = yes; then
124      HAVE_LOCALE_T=1
125    else
126      HAVE_LOCALE_T=0
127    fi
128  fi
129  AC_SUBST([HAVE_XLOCALE_H])
130])
131
132AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
133[
134  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
135  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
136  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
137  dnl Define it also as a C macro, for the benefit of the unit tests.
138  gl_MODULE_INDICATOR_FOR_TESTS([$1])
139])
140
141AC_DEFUN([gl_LOCALE_H_DEFAULTS],
142[
143  GNULIB_LOCALECONV=0;     AC_SUBST([GNULIB_LOCALECONV])
144  GNULIB_SETLOCALE=0;      AC_SUBST([GNULIB_SETLOCALE])
145  GNULIB_SETLOCALE_NULL=0; AC_SUBST([GNULIB_SETLOCALE_NULL])
146  GNULIB_DUPLOCALE=0;      AC_SUBST([GNULIB_DUPLOCALE])
147  GNULIB_LOCALENAME=0;     AC_SUBST([GNULIB_LOCALENAME])
148  dnl Assume proper GNU behavior unless another module says otherwise.
149  HAVE_NEWLOCALE=1;       AC_SUBST([HAVE_NEWLOCALE])
150  HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
151  HAVE_FREELOCALE=1;      AC_SUBST([HAVE_FREELOCALE])
152  REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
153  REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
154  REPLACE_NEWLOCALE=0;    AC_SUBST([REPLACE_NEWLOCALE])
155  REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
156  REPLACE_FREELOCALE=0;   AC_SUBST([REPLACE_FREELOCALE])
157  REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
158])
159