# langinfo_h.m4 serial 7

dnl Copyright (C) 2009-2010 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([gl_LANGINFO_H],

[

AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])

dnl Persuade glibc-2.0.6 <langinfo.h> to define CODESET.

AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

dnl <langinfo.h> is always overridden, because of GNULIB_POSIXCHECK.

gl_CHECK_NEXT_HEADERS([langinfo.h])

dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.

HAVE_LANGINFO_CODESET=0

HAVE_LANGINFO_T_FMT_AMPM=0

HAVE_LANGINFO_ERA=0

HAVE_LANGINFO_YESEXPR=0

AC_CHECK_HEADERS_ONCE([langinfo.h])

if test $ac_cv_header_langinfo_h = yes; then

HAVE_LANGINFO_H=1

dnl Determine what <langinfo.h> defines. CODESET and ERA etc. are missing

dnl on OpenBSD 3.8. T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.

AC_CACHE_CHECK([whether langinfo.h defines CODESET],

[gl_cv_header_langinfo_codeset],

[AC_COMPILE_IFELSE(

[AC_LANG_PROGRAM([[#include <langinfo.h>

int a = CODESET;

]])],

[gl_cv_header_langinfo_codeset=yes],

[gl_cv_header_langinfo_codeset=no])

])

if test $gl_cv_header_langinfo_codeset = yes; then

HAVE_LANGINFO_CODESET=1

fi

AC_CACHE_CHECK([whether langinfo.h defines T_FMT_AMPM],

[gl_cv_header_langinfo_t_fmt_ampm],

[AC_COMPILE_IFELSE(

[AC_LANG_PROGRAM([[#include <langinfo.h>

int a = T_FMT_AMPM;

]])],

[gl_cv_header_langinfo_t_fmt_ampm=yes],

[gl_cv_header_langinfo_t_fmt_ampm=no])

])

if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then

HAVE_LANGINFO_T_FMT_AMPM=1

fi

AC_CACHE_CHECK([whether langinfo.h defines ERA],

[gl_cv_header_langinfo_era],

[AC_COMPILE_IFELSE(

[AC_LANG_PROGRAM([[#include <langinfo.h>

int a = ERA;

]])],

[gl_cv_header_langinfo_era=yes],

[gl_cv_header_langinfo_era=no])

])

if test $gl_cv_header_langinfo_era = yes; then

HAVE_LANGINFO_ERA=1

fi

AC_CACHE_CHECK([whether langinfo.h defines YESEXPR],

[gl_cv_header_langinfo_yesexpr],

[AC_COMPILE_IFELSE(

[AC_LANG_PROGRAM([[#include <langinfo.h>

int a = YESEXPR;

]])],

[gl_cv_header_langinfo_yesexpr=yes],

[gl_cv_header_langinfo_yesexpr=no])

])

if test $gl_cv_header_langinfo_yesexpr = yes; then

HAVE_LANGINFO_YESEXPR=1

fi

else

HAVE_LANGINFO_H=0

fi

AC_SUBST([HAVE_LANGINFO_H])

AC_SUBST([HAVE_LANGINFO_CODESET])

AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])

AC_SUBST([HAVE_LANGINFO_ERA])

AC_SUBST([HAVE_LANGINFO_YESEXPR])

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 <langinfo.h>

]], [nl_langinfo])

])

AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],

[

dnl Use AC_REQUIRE here, so that the default settings are expanded once only.

AC_REQUIRE([gl_LANGINFO_H_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])

])

AC_DEFUN([gl_LANGINFO_H_DEFAULTS],

[

GNULIB_NL_LANGINFO=0; AC_SUBST([GNULIB_NL_LANGINFO])

dnl Assume proper GNU behavior unless another module says otherwise.

HAVE_NL_LANGINFO=1; AC_SUBST([HAVE_NL_LANGINFO])

REPLACE_NL_LANGINFO=0; AC_SUBST([REPLACE_NL_LANGINFO])

])