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      1 # locale-ja.m4 serial 7
      2 dnl Copyright (C) 2003, 2005-2009 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 dnl From Bruno Haible.
      8 
      9 dnl Determine the name of a japanese locale with EUC-JP encoding.
     10 AC_DEFUN([gt_LOCALE_JA],
     11 [
     12   AC_REQUIRE([AC_CANONICAL_HOST])
     13   AC_REQUIRE([AM_LANGINFO_CODESET])
     14   AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [
     15     AC_LANG_CONFTEST([AC_LANG_SOURCE([
     16 changequote(,)dnl
     17 #include <locale.h>
     18 #include <time.h>
     19 #if HAVE_LANGINFO_CODESET
     20 # include <langinfo.h>
     21 #endif
     22 #include <stdlib.h>
     23 #include <string.h>
     24 struct tm t;
     25 char buf[16];
     26 int main ()
     27 {
     28   const char *p;
     29   /* Check whether the given locale name is recognized by the system.  */
     30   if (setlocale (LC_ALL, "") == NULL) return 1;
     31   /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
     32      On MacOS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
     33      is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
     34      On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
     35      succeeds but then nl_langinfo(CODESET) is "646". In this situation,
     36      some unit tests fail.  */
     37 #if HAVE_LANGINFO_CODESET
     38   {
     39     const char *cs = nl_langinfo (CODESET);
     40     if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
     41       return 1;
     42   }
     43 #endif
     44 #ifdef __CYGWIN__
     45   /* On Cygwin, avoid locale names without encoding suffix, because the
     46      locale_charset() function relies on the encoding suffix.  Note that
     47      LC_ALL is set on the command line.  */
     48   if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
     49 #endif
     50   /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
     51      on Cygwin 1.5.x.  */
     52   if (MB_CUR_MAX == 1)
     53     return 1;
     54   /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
     55      This excludes the UTF-8 encoding.  */
     56   t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
     57   if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
     58   for (p = buf; *p != '\0'; p++)
     59     if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
     60       return 1;
     61   return 0;
     62 }
     63 changequote([,])dnl
     64       ])])
     65     if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
     66       # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
     67       # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
     68       # configure script would override the LC_ALL setting. Likewise for
     69       # LC_CTYPE, which is also set at the beginning of the configure script.
     70       # Test for the AIX locale name.
     71       if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
     72         gt_cv_locale_ja=ja_JP
     73       else
     74         # Test for the locale name with explicit encoding suffix.
     75         if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
     76           gt_cv_locale_ja=ja_JP.EUC-JP
     77         else
     78           # Test for the HP-UX, OSF/1, NetBSD locale name.
     79           if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
     80             gt_cv_locale_ja=ja_JP.eucJP
     81           else
     82             # Test for the IRIX, FreeBSD locale name.
     83             if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
     84               gt_cv_locale_ja=ja_JP.EUC
     85             else
     86               # Test for the Solaris 7 locale name.
     87               if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
     88                 gt_cv_locale_ja=ja
     89               else
     90                 # Special test for NetBSD 1.6.
     91                 if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
     92                   gt_cv_locale_ja=ja_JP.eucJP
     93                 else
     94                   # None found.
     95                   gt_cv_locale_ja=none
     96                 fi
     97               fi
     98             fi
     99           fi
    100         fi
    101       fi
    102     fi
    103     rm -fr conftest*
    104   ])
    105   LOCALE_JA=$gt_cv_locale_ja
    106   AC_SUBST([LOCALE_JA])
    107 ])
    108