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# locale_h.m4 serial 31
dnl Copyright (C) 2007, 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN_ONCE([gl_LOCALE_H],
[
dnl Ensure to expand the default settings once only, before all statements
dnl that occur in other macros.
AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
dnl Persuade glibc <locale.h> to define locale_t and the int_p_*, int_n_*
dnl members of 'struct lconv'.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
AC_REQUIRE([gl_STDDEF_H])
AC_REQUIRE([gl_LOCALE_T])
dnl Solaris 11.0 defines the int_p_*, int_n_* members of 'struct lconv'
dnl only if _LCONV_C99 is defined.
AC_REQUIRE([AC_CANONICAL_HOST])
case "$host_os" in
solaris*)
AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
;;
esac
AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
[gl_cv_header_locale_h_posix2001],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <locale.h>
int x = LC_MESSAGES;
int y = sizeof (((struct lconv *) 0)->decimal_point);]],
[[]])],
[gl_cv_header_locale_h_posix2001=yes],
[gl_cv_header_locale_h_posix2001=no])])
dnl Check whether 'struct lconv' is complete.
dnl Bionic libc's 'struct lconv' is just a dummy.
dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
AC_CACHE_CHECK([whether struct lconv is properly defined],
[gl_cv_sys_struct_lconv_ok],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <locale.h>
struct lconv l;
int x = sizeof (l.decimal_point);
int y = sizeof (l.int_p_cs_precedes);]],
[[]])],
[gl_cv_sys_struct_lconv_ok=yes],
[gl_cv_sys_struct_lconv_ok=no])
])
if test $gl_cv_sys_struct_lconv_ok = no; then
dnl On native Windows with MSVC, merely define these member names as macros.
dnl This avoids trouble in C++ mode.
case "$host_os" in
windows*-msvc*)
;;
mingw* | windows*)
AC_EGREP_CPP([Special], [
#ifdef _MSC_VER
Special
#endif
],
[],
[REPLACE_STRUCT_LCONV=1])
;;
*) REPLACE_STRUCT_LCONV=1 ;;
esac
fi
dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_NEXT_HEADERS([locale.h])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <locale.h>
/* Some systems provide declarations in a non-standard header. */
#if HAVE_XLOCALE_H
# include <xlocale.h>
#endif
]],
[setlocale newlocale duplocale freelocale])
])
dnl Checks to determine whether the system has the locale_t type,
dnl and how to obtain it.
AC_DEFUN([gl_LOCALE_T],
[
dnl Persuade glibc and Solaris <locale.h> to define locale_t.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
dnl itself, we assume that <xlocale.h> will do so.
AC_CACHE_CHECK([whether locale.h defines locale_t],
[gl_cv_header_locale_has_locale_t],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <locale.h>
locale_t x;]],
[[]])],
[gl_cv_header_locale_has_locale_t=yes],
[gl_cv_header_locale_has_locale_t=no])
])
dnl Check for <xlocale.h>.
AC_CHECK_HEADERS_ONCE([xlocale.h])
if test $ac_cv_header_xlocale_h = yes; then
HAVE_XLOCALE_H=1
if test $gl_cv_header_locale_has_locale_t = yes; then
gl_cv_header_locale_h_needs_xlocale_h=no
else
gl_cv_header_locale_h_needs_xlocale_h=yes
fi
HAVE_LOCALE_T=1
else
HAVE_XLOCALE_H=0
gl_cv_header_locale_h_needs_xlocale_h=no
if test $gl_cv_header_locale_has_locale_t = yes; then
HAVE_LOCALE_T=1
else
HAVE_LOCALE_T=0
fi
fi
AC_SUBST([HAVE_XLOCALE_H])
])
# gl_LOCALE_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_LOCALE_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_LOCALE_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALECONV])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETLOCALE_NULL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUPLOCALE])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALENAME_UNSAFE])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_LOCALE_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
])
AC_DEFUN([gl_LOCALE_H_DEFAULTS],
[
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_NEWLOCALE=1; AC_SUBST([HAVE_NEWLOCALE])
HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE])
HAVE_FREELOCALE=1; AC_SUBST([HAVE_FREELOCALE])
REPLACE_LOCALECONV=0; AC_SUBST([REPLACE_LOCALECONV])
REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE])
REPLACE_NEWLOCALE=0; AC_SUBST([REPLACE_NEWLOCALE])
REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])
REPLACE_FREELOCALE=0; AC_SUBST([REPLACE_FREELOCALE])
REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
LOCALENAME_ENHANCE_LOCALE_FUNCS=0; AC_SUBST([LOCALENAME_ENHANCE_LOCALE_FUNCS])
])
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