m4/nl_langinfo.m4

   1 # nl_langinfo.m4 serial 5
   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_FUNC_NL_LANGINFO],
   8 [
   9   AC_REQUIRE([gl_LANGINFO_H_DEFAULTS])
  10   AC_REQUIRE([gl_LANGINFO_H])
  11   AC_CHECK_FUNCS_ONCE([nl_langinfo])
  12   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  13   if test $ac_cv_func_nl_langinfo = yes; then
  14     # On Irix 6.5, YESEXPR is defined, but nl_langinfo(YESEXPR) is broken.
  15     AC_CACHE_CHECK([whether YESEXPR works],
  16       [gl_cv_func_nl_langinfo_yesexpr_works],
  17       [AC_RUN_IFELSE(
  18          [AC_LANG_PROGRAM([[#include <langinfo.h>
  19 ]], [[return !*nl_langinfo(YESEXPR);
  20 ]])],
  21          [gl_cv_func_nl_langinfo_yesexpr_works=yes],
  22          [gl_cv_func_nl_langinfo_yesexpr_works=no],
  23          [
  24          case "$host_os" in
  25                    # Guess no on irix systems.
  26            irix*)  gl_cv_func_nl_langinfo_yesexpr_works="guessing no";;
  27                    # Guess yes elsewhere.
  28            *)      gl_cv_func_nl_langinfo_yesexpr_works="guessing yes";;
  29          esac
  30          ])
  31       ])
  32     case $gl_cv_func_nl_langinfo_yesexpr_works in
  33       *yes) FUNC_NL_LANGINFO_YESEXPR_WORKS=1 ;;
  34       *)    FUNC_NL_LANGINFO_YESEXPR_WORKS=0 ;;
  35     esac
  36     AC_DEFINE_UNQUOTED([FUNC_NL_LANGINFO_YESEXPR_WORKS],
  37       [$FUNC_NL_LANGINFO_YESEXPR_WORKS],
  38       [Define to 1 if nl_langinfo (YESEXPR) returns a non-empty string.])
  39     if test $HAVE_LANGINFO_CODESET = 1 && test $HAVE_LANGINFO_ERA = 1 \
  40         && test $FUNC_NL_LANGINFO_YESEXPR_WORKS = 1; then
  41       :
  42     else
  43       REPLACE_NL_LANGINFO=1
  44       AC_DEFINE([REPLACE_NL_LANGINFO], [1],
  45         [Define if nl_langinfo exists but is overridden by gnulib.])
  46     fi
  47   else
  48     HAVE_NL_LANGINFO=0
  49   fi
  50 ])