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+# locale-ja.m4 serial 15
+dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Determine the name of a japanese locale with EUC-JP encoding.
+AC_DEFUN([gt_LOCALE_JA],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_REQUIRE([AM_LANGINFO_CODESET])
+ AC_CACHE_CHECK([for a traditional japanese locale], [gt_cv_locale_ja], [
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([[
+#include <locale.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+struct tm t;
+char buf[16];
+int main ()
+{
+ /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl
+ imitates locale dependent behaviour by looking at the environment
+ variables, and all locales use the UTF-8 encoding. */
+#if defined __BEOS__ || defined __HAIKU__
+ return 1;
+#else
+ /* Check whether the given locale name is recognized by the system. */
+# if defined _WIN32 && !defined __CYGWIN__
+ /* On native Windows, setlocale(category, "") looks at the system settings,
+ not at the environment variables. Also, when an encoding suffix such
+ as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
+ category of the locale to "C". */
+ if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
+ || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
+ return 1;
+# else
+ if (setlocale (LC_ALL, "") == NULL) return 1;
+# endif
+ /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
+ On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
+ is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
+ On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
+ succeeds but then nl_langinfo(CODESET) is "646". In this situation,
+ some unit tests fail.
+ On MirBSD 10, when an unsupported locale is specified, setlocale()
+ succeeds but then nl_langinfo(CODESET) is "UTF-8". */
+# if HAVE_LANGINFO_CODESET
+ {
+ const char *cs = nl_langinfo (CODESET);
+ if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
+ || strcmp (cs, "UTF-8") == 0)
+ return 1;
+ }
+# endif
+# ifdef __CYGWIN__
+ /* On Cygwin, avoid locale names without encoding suffix, because the
+ locale_charset() function relies on the encoding suffix. Note that
+ LC_ALL is set on the command line. */
+ if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
+# endif
+ /* Check whether MB_CUR_MAX is > 1. This excludes the dysfunctional locales
+ on Cygwin 1.5.x. */
+ if (MB_CUR_MAX == 1)
+ return 1;
+ /* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
+ This excludes the UTF-8 encoding (except on MirBSD). */
+ {
+ const char *p;
+ t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
+ if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
+ for (p = buf; *p != '\0'; p++)
+ if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0)
+ return 1;
+ }
+ return 0;
+#endif
+}
+ ]])])
+ if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+ case "$host_os" in
+ # Handle native Windows specially, because there setlocale() interprets
+ # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
+ # "fr" or "fra" as "French" or "French_France.1252",
+ # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
+ # "ja" as "Japanese" or "Japanese_Japan.932",
+ # and similar.
+ mingw*)
+ # Note that on native Windows, the Japanese locale is
+ # Japanese_Japan.932, and CP932 is very different from EUC-JP, so we
+ # cannot use it here.
+ gt_cv_locale_ja=none
+ ;;
+ *)
+ # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
+ # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
+ # configure script would override the LC_ALL setting. Likewise for
+ # LC_CTYPE, which is also set at the beginning of the configure script.
+ # Test for the AIX locale name.
+ if (LC_ALL=ja_JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+ gt_cv_locale_ja=ja_JP
+ else
+ # Test for the locale name with explicit encoding suffix.
+ if (LC_ALL=ja_JP.EUC-JP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+ gt_cv_locale_ja=ja_JP.EUC-JP
+ else
+ # Test for the HP-UX, OSF/1, NetBSD locale name.
+ if (LC_ALL=ja_JP.eucJP LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+ gt_cv_locale_ja=ja_JP.eucJP
+ else
+ # Test for the IRIX, FreeBSD locale name.
+ if (LC_ALL=ja_JP.EUC LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+ gt_cv_locale_ja=ja_JP.EUC
+ else
+ # Test for the Solaris 7 locale name.
+ if (LC_ALL=ja LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
+ gt_cv_locale_ja=ja
+ else
+ # Special test for NetBSD 1.6.
+ if test -f /usr/share/locale/ja_JP.eucJP/LC_CTYPE; then
+ gt_cv_locale_ja=ja_JP.eucJP
+ else
+ # None found.
+ gt_cv_locale_ja=none
+ fi
+ fi
+ fi
+ fi
+ fi
+ fi
+ ;;
+ esac
+ fi
+ rm -fr conftest*
+ ])
+ LOCALE_JA=$gt_cv_locale_ja
+ AC_SUBST([LOCALE_JA])
+])