1# locale-ja.m4 serial 15
2dnl Copyright (C) 2003, 2005-2020 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7dnl From Bruno Haible.
8
9dnl Determine the name of a japanese locale with EUC-JP encoding.
10AC_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#include <locale.h>
17#include <time.h>
18#if HAVE_LANGINFO_CODESET
19# include <langinfo.h>
20#endif
21#include <stdlib.h>
22#include <string.h>
23struct tm t;
24char buf[16];
25int main ()
26{
27  /* On BeOS and Haiku, locales are not implemented in libc.  Rather, libintl
28     imitates locale dependent behaviour by looking at the environment
29     variables, and all locales use the UTF-8 encoding.  */
30#if defined __BEOS__ || defined __HAIKU__
31  return 1;
32#else
33  /* Check whether the given locale name is recognized by the system.  */
34# if defined _WIN32 && !defined __CYGWIN__
35  /* On native Windows, setlocale(category, "") looks at the system settings,
36     not at the environment variables.  Also, when an encoding suffix such
37     as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
38     category of the locale to "C".  */
39  if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
40      || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
41    return 1;
42# else
43  if (setlocale (LC_ALL, "") == NULL) return 1;
44# endif
45  /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
46     On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
47     is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
48     On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
49     succeeds but then nl_langinfo(CODESET) is "646". In this situation,
50     some unit tests fail.
51     On MirBSD 10, when an unsupported locale is specified, setlocale()
52     succeeds but then nl_langinfo(CODESET) is "UTF-8".  */
53# if HAVE_LANGINFO_CODESET
54  {
55    const char *cs = nl_langinfo (CODESET);
56    if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
57        || strcmp (cs, "UTF-8") == 0)
58      return 1;
59  }
60# endif
61# ifdef __CYGWIN__
62  /* On Cygwin, avoid locale names without encoding suffix, because the
63     locale_charset() function relies on the encoding suffix.  Note that
64     LC_ALL is set on the command line.  */
65  if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
66# endif
67  /* Check whether MB_CUR_MAX is > 1.  This excludes the dysfunctional locales
68     on Cygwin 1.5.x.  */
69  if (MB_CUR_MAX == 1)
70    return 1;
71  /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
72     This excludes the UTF-8 encoding (except on MirBSD).  */
73  {
74    const char *p;
75    t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
76    if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
77    for (p = buf; *p != '\0'; p++)
78      if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
79        return 1;
80  }
81  return 0;
82#endif
83}
84      ]])])
85    if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
86      case "$host_os" in
87        # Handle native Windows specially, because there setlocale() interprets
88        # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
89        # "fr" or "fra" as "French" or "French_France.1252",
90        # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
91        # "ja" as "Japanese" or "Japanese_Japan.932",
92        # and similar.
93        mingw*)
94          # Note that on native Windows, the Japanese locale is
95          # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
96          # cannot use it here.
97          gt_cv_locale_ja=none
98          ;;
99        *)
100          # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
101          # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
102          # configure script would override the LC_ALL setting. Likewise for
103          # LC_CTYPE, which is also set at the beginning of the configure script.
104          # Test for the AIX locale name.
105          if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
106            gt_cv_locale_ja=ja_JP
107          else
108            # Test for the locale name with explicit encoding suffix.
109            if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
110              gt_cv_locale_ja=ja_JP.EUC-JP
111            else
112              # Test for the HP-UX, OSF/1, NetBSD locale name.
113              if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
114                gt_cv_locale_ja=ja_JP.eucJP
115              else
116                # Test for the IRIX, FreeBSD locale name.
117                if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
118                  gt_cv_locale_ja=ja_JP.EUC
119                else
120                  # Test for the Solaris 7 locale name.
121                  if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
122                    gt_cv_locale_ja=ja
123                  else
124                    # Special test for NetBSD 1.6.
125                    if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
126                      gt_cv_locale_ja=ja_JP.eucJP
127                    else
128                      # None found.
129                      gt_cv_locale_ja=none
130                    fi
131                  fi
132                fi
133              fi
134            fi
135          fi
136          ;;
137      esac
138    fi
139    rm -fr conftest*
140  ])
141  LOCALE_JA=$gt_cv_locale_ja
142  AC_SUBST([LOCALE_JA])
143])
144