m4/langinfo_h.m4

   1 # langinfo_h.m4 serial 7
   2 dnl Copyright (C) 2009-2014 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_LANGINFO_H],
   8 [
   9   AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
  10
  11   dnl Persuade glibc-2.0.6 <langinfo.h> to define CODESET.
  12   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
  13
  14   dnl <langinfo.h> is always overridden, because of GNULIB_POSIXCHECK.
  15   gl_CHECK_NEXT_HEADERS([langinfo.h])
  16
  17   dnl Determine whether <langinfo.h> exists. It is missing on mingw and BeOS.
  18   HAVE_LANGINFO_CODESET=0
  19   HAVE_LANGINFO_T_FMT_AMPM=0
  20   HAVE_LANGINFO_ERA=0
  21   HAVE_LANGINFO_YESEXPR=0
  22   AC_CHECK_HEADERS_ONCE([langinfo.h])
  23   if test $ac_cv_header_langinfo_h = yes; then
  24     HAVE_LANGINFO_H=1
  25     dnl Determine what <langinfo.h> defines. CODESET and ERA etc. are missing
  26     dnl on OpenBSD 3.8. T_FMT_AMPM and YESEXPR, NOEXPR are missing on IRIX 5.3.
  27     AC_CACHE_CHECK([whether langinfo.h defines CODESET],
  28       [gl_cv_header_langinfo_codeset],
  29       [AC_COMPILE_IFELSE(
  30          [AC_LANG_PROGRAM([[#include <langinfo.h>
  31 int a = CODESET;
  32 ]])],
  33          [gl_cv_header_langinfo_codeset=yes],
  34          [gl_cv_header_langinfo_codeset=no])
  35       ])
  36     if test $gl_cv_header_langinfo_codeset = yes; then
  37       HAVE_LANGINFO_CODESET=1
  38     fi
  39     AC_CACHE_CHECK([whether langinfo.h defines T_FMT_AMPM],
  40       [gl_cv_header_langinfo_t_fmt_ampm],
  41       [AC_COMPILE_IFELSE(
  42          [AC_LANG_PROGRAM([[#include <langinfo.h>
  43 int a = T_FMT_AMPM;
  44 ]])],
  45          [gl_cv_header_langinfo_t_fmt_ampm=yes],
  46          [gl_cv_header_langinfo_t_fmt_ampm=no])
  47       ])
  48     if test $gl_cv_header_langinfo_t_fmt_ampm = yes; then
  49       HAVE_LANGINFO_T_FMT_AMPM=1
  50     fi
  51     AC_CACHE_CHECK([whether langinfo.h defines ERA],
  52       [gl_cv_header_langinfo_era],
  53       [AC_COMPILE_IFELSE(
  54          [AC_LANG_PROGRAM([[#include <langinfo.h>
  55 int a = ERA;
  56 ]])],
  57          [gl_cv_header_langinfo_era=yes],
  58          [gl_cv_header_langinfo_era=no])
  59       ])
  60     if test $gl_cv_header_langinfo_era = yes; then
  61       HAVE_LANGINFO_ERA=1
  62     fi
  63     AC_CACHE_CHECK([whether langinfo.h defines YESEXPR],
  64       [gl_cv_header_langinfo_yesexpr],
  65       [AC_COMPILE_IFELSE(
  66          [AC_LANG_PROGRAM([[#include <langinfo.h>
  67 int a = YESEXPR;
  68 ]])],
  69          [gl_cv_header_langinfo_yesexpr=yes],
  70          [gl_cv_header_langinfo_yesexpr=no])
  71       ])
  72     if test $gl_cv_header_langinfo_yesexpr = yes; then
  73       HAVE_LANGINFO_YESEXPR=1
  74     fi
  75   else
  76     HAVE_LANGINFO_H=0
  77   fi
  78   AC_SUBST([HAVE_LANGINFO_H])
  79   AC_SUBST([HAVE_LANGINFO_CODESET])
  80   AC_SUBST([HAVE_LANGINFO_T_FMT_AMPM])
  81   AC_SUBST([HAVE_LANGINFO_ERA])
  82   AC_SUBST([HAVE_LANGINFO_YESEXPR])
  83
  84   dnl Check for declarations of anything we want to poison if the
  85   dnl corresponding gnulib module is not in use.
  86   gl_WARN_ON_USE_PREPARE([[#include <langinfo.h>
  87     ]], [nl_langinfo])
  88 ])
  89
  90 AC_DEFUN([gl_LANGINFO_MODULE_INDICATOR],
  91 [
  92   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  93   AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
  94   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  95   dnl Define it also as a C macro, for the benefit of the unit tests.
  96   gl_MODULE_INDICATOR_FOR_TESTS([$1])
  97 ])
  98
  99 AC_DEFUN([gl_LANGINFO_H_DEFAULTS],
 100 [
 101   GNULIB_NL_LANGINFO=0;  AC_SUBST([GNULIB_NL_LANGINFO])
 102   dnl Assume proper GNU behavior unless another module says otherwise.
 103   HAVE_NL_LANGINFO=1;    AC_SUBST([HAVE_NL_LANGINFO])
 104   REPLACE_NL_LANGINFO=0; AC_SUBST([REPLACE_NL_LANGINFO])
 105 ])