138 lines
4.7 KiB
Plaintext
138 lines
4.7 KiB
Plaintext
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# langinfo_h.m4 serial 12
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dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN_ONCE([gl_LANGINFO_H],
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[
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AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
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dnl Persuade glibc-2.0.6 <langinfo.h> to define CODESET.
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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dnl <langinfo.h> is always overridden, because of GNULIB_POSIXCHECK.
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gl_CHECK_NEXT_HEADERS([langinfo.h])
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dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
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HAVE_LANGINFO_CODESET=0
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HAVE_LANGINFO_T_FMT_AMPM=0
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HAVE_LANGINFO_ALTMON=0
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HAVE_LANGINFO_ERA=0
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HAVE_LANGINFO_YESEXPR=0
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AC_CHECK_HEADERS_ONCE([langinfo.h])
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if test $ac_cv_header_langinfo_h = yes; then
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HAVE_LANGINFO_H=1
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dnl Determine what <langinfo.h> defines.
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dnl CODESET is missing on OpenBSD 3.8.
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dnl ERA etc. are missing on OpenBSD 6.7.
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dnl T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.
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dnl ALTMON_* are missing on glibc 2.26 and many other systems.
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AC_CACHE_CHECK([whether langinfo.h defines CODESET],
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[gl_cv_header_langinfo_codeset],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[#include <langinfo.h>
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int a = CODESET;
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]])],
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[gl_cv_header_langinfo_codeset=yes],
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[gl_cv_header_langinfo_codeset=no])
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])
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if test $gl_cv_header_langinfo_codeset = yes; then
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HAVE_LANGINFO_CODESET=1
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fi
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AC_CACHE_CHECK([whether langinfo.h defines T_FMT_AMPM],
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[gl_cv_header_langinfo_t_fmt_ampm],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[#include <langinfo.h>
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int a = T_FMT_AMPM;
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]])],
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[gl_cv_header_langinfo_t_fmt_ampm=yes],
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[gl_cv_header_langinfo_t_fmt_ampm=no])
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])
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if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
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HAVE_LANGINFO_T_FMT_AMPM=1
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fi
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AC_CACHE_CHECK([whether langinfo.h defines ALTMON_1],
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[gl_cv_header_langinfo_altmon],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[#include <langinfo.h>
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int a = ALTMON_1;
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]])],
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[gl_cv_header_langinfo_altmon=yes],
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[gl_cv_header_langinfo_altmon=no])
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])
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if test $gl_cv_header_langinfo_altmon = yes; then
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HAVE_LANGINFO_ALTMON=1
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fi
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AC_CACHE_CHECK([whether langinfo.h defines ERA],
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[gl_cv_header_langinfo_era],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[#include <langinfo.h>
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int a = ERA;
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]])],
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[gl_cv_header_langinfo_era=yes],
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[gl_cv_header_langinfo_era=no])
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])
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if test $gl_cv_header_langinfo_era = yes; then
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HAVE_LANGINFO_ERA=1
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fi
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AC_CACHE_CHECK([whether langinfo.h defines YESEXPR],
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[gl_cv_header_langinfo_yesexpr],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM([[#include <langinfo.h>
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int a = YESEXPR;
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]])],
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[gl_cv_header_langinfo_yesexpr=yes],
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[gl_cv_header_langinfo_yesexpr=no])
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])
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if test $gl_cv_header_langinfo_yesexpr = yes; then
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HAVE_LANGINFO_YESEXPR=1
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fi
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else
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HAVE_LANGINFO_H=0
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fi
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AC_SUBST([HAVE_LANGINFO_H])
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AC_SUBST([HAVE_LANGINFO_CODESET])
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AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])
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AC_SUBST([HAVE_LANGINFO_ALTMON])
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AC_SUBST([HAVE_LANGINFO_ERA])
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AC_SUBST([HAVE_LANGINFO_YESEXPR])
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use.
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gl_WARN_ON_USE_PREPARE([[#include <langinfo.h>
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]], [nl_langinfo])
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])
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# gl_LANGINFO_MODULE_INDICATOR([modulename])
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# sets the shell variable that indicates the presence of the given module
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# to a C preprocessor expression that will evaluate to 1.
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# This macro invocation must not occur in macros that are AC_REQUIREd.
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AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
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[
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dnl Ensure to expand the default settings once only.
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gl_LANGINFO_H_REQUIRE_DEFAULTS
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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dnl Define it also as a C macro, for the benefit of the unit tests.
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gl_MODULE_INDICATOR_FOR_TESTS([$1])
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])
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# Initializes the default values for AC_SUBSTed shell variables.
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# This macro must not be AC_REQUIREd. It must only be invoked, and only
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# outside of macros or in macros that are not AC_REQUIREd.
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AC_DEFUN([gl_LANGINFO_H_REQUIRE_DEFAULTS],
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[
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m4_defun(GL_MODULE_INDICATOR_PREFIX[_LANGINFO_H_MODULE_INDICATOR_DEFAULTS], [
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NL_LANGINFO])
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])
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m4_require(GL_MODULE_INDICATOR_PREFIX[_LANGINFO_H_MODULE_INDICATOR_DEFAULTS])
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AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
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])
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AC_DEFUN([gl_LANGINFO_H_DEFAULTS],
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[
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dnl Assume proper GNU behavior unless another module says otherwise.
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HAVE_NL_LANGINFO=1; AC_SUBST([HAVE_NL_LANGINFO])
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REPLACE_NL_LANGINFO=0; AC_SUBST([REPLACE_NL_LANGINFO])
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])
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