1# locale_h.m4 serial 19
2dnl Copyright (C) 2007, 2009-2014 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  dnl Solaris 11 2011-11 defines the int_p_*, int_n_* members of 'struct lconv'
21  dnl only if _LCONV_C99 is defined.
22  AC_REQUIRE([AC_CANONICAL_HOST])
23  case "$host_os" in
24    solaris*)
25      AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
26      ;;
27  esac
28
29  AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
30    [gl_cv_header_locale_h_posix2001],
31    [AC_COMPILE_IFELSE(
32       [AC_LANG_PROGRAM(
33          [[#include <locale.h>
34            int x = LC_MESSAGES;
35            int y = sizeof (((struct lconv *) 0)->decimal_point);]],
36          [[]])],
37       [gl_cv_header_locale_h_posix2001=yes],
38       [gl_cv_header_locale_h_posix2001=no])])
39
40  dnl Check for <xlocale.h>.
41  AC_CHECK_HEADERS_ONCE([xlocale.h])
42  if test $ac_cv_header_xlocale_h = yes; then
43    HAVE_XLOCALE_H=1
44    dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
45    dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
46    dnl itself, we assume that <xlocale.h> will do so.
47    AC_CACHE_CHECK([whether locale.h defines locale_t],
48      [gl_cv_header_locale_has_locale_t],
49      [AC_COMPILE_IFELSE(
50         [AC_LANG_PROGRAM(
51            [[#include <locale.h>
52              locale_t x;]],
53            [[]])],
54         [gl_cv_header_locale_has_locale_t=yes],
55         [gl_cv_header_locale_has_locale_t=no])
56      ])
57    if test $gl_cv_header_locale_has_locale_t = yes; then
58      gl_cv_header_locale_h_needs_xlocale_h=no
59    else
60      gl_cv_header_locale_h_needs_xlocale_h=yes
61    fi
62  else
63    HAVE_XLOCALE_H=0
64    gl_cv_header_locale_h_needs_xlocale_h=no
65  fi
66  AC_SUBST([HAVE_XLOCALE_H])
67
68  dnl Check whether 'struct lconv' is complete.
69  dnl Bionic libc's 'struct lconv' is just a dummy.
70  dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
71  dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
72  AC_CACHE_CHECK([whether struct lconv is properly defined],
73    [gl_cv_sys_struct_lconv_ok],
74    [AC_COMPILE_IFELSE(
75       [AC_LANG_PROGRAM(
76          [[#include <locale.h>
77            struct lconv l;
78            int x = sizeof (l.decimal_point);
79            int y = sizeof (l.int_p_cs_precedes);]],
80          [[]])],
81       [gl_cv_sys_struct_lconv_ok=yes],
82       [gl_cv_sys_struct_lconv_ok=no])
83    ])
84  if test $gl_cv_sys_struct_lconv_ok = no; then
85    REPLACE_STRUCT_LCONV=1
86  fi
87
88  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
89  gl_NEXT_HEADERS([locale.h])
90
91  dnl Check for declarations of anything we want to poison if the
92  dnl corresponding gnulib module is not in use.
93  gl_WARN_ON_USE_PREPARE([[#include <locale.h>
94/* Some systems provide declarations in a non-standard header.  */
95#if HAVE_XLOCALE_H
96# include <xlocale.h>
97#endif
98    ]],
99    [setlocale duplocale])
100])
101
102AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
103[
104  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
105  AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
106  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
107  dnl Define it also as a C macro, for the benefit of the unit tests.
108  gl_MODULE_INDICATOR_FOR_TESTS([$1])
109])
110
111AC_DEFUN([gl_LOCALE_H_DEFAULTS],
112[
113  GNULIB_LOCALECONV=0; AC_SUBST([GNULIB_LOCALECONV])
114  GNULIB_SETLOCALE=0;  AC_SUBST([GNULIB_SETLOCALE])
115  GNULIB_DUPLOCALE=0;  AC_SUBST([GNULIB_DUPLOCALE])
116  dnl Assume proper GNU behavior unless another module says otherwise.
117  HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
118  REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
119  REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
120  REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
121  REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
122])
123