# locale-zh.m4 serial 6 dnl Copyright (C) 2003, 2005-2010 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 chinese locale with GB18030 encoding. AC_DEFUN([gt_LOCALE_ZH_CN], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([AM_LANGINFO_CODESET]) AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ AC_LANG_CONFTEST([AC_LANG_SOURCE([ changequote(,)dnl #include <locale.h> #include <stdlib.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 () { const char *p; /* Check whether the given locale name is recognized by the system. */ if (setlocale (LC_ALL, "") == NULL) return 1; /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". On MacOS 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. */ #if HAVE_LANGINFO_CODESET { const char *cs = nl_langinfo (CODESET); if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 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 in a month name, no byte in the range 0x80..0x9F occurs. This excludes the UTF-8 encoding. */ 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; /* Check whether a typical GB18030 multibyte sequence is recognized as a single wide character. This excludes the GB2312 and GBK encodings. */ if (mblen ("\203\062\332\066", 5) != 4) return 1; return 0; } changequote([,])dnl ])]) if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the # configure script would override the LC_ALL setting. Likewise for # LC_CTYPE, which is also set at the beginning of the configure script. # Test for the locale name without encoding suffix. if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_zh_CN=zh_CN else # Test for the locale name with explicit encoding suffix. if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then gt_cv_locale_zh_CN=zh_CN.GB18030 else # None found. gt_cv_locale_zh_CN=none fi fi else # If there was a link error, due to mblen(), the system is so old that # it certainly doesn't have a chinese locale. gt_cv_locale_zh_CN=none fi rm -fr conftest* ]) LOCALE_ZH_CN=$gt_cv_locale_zh_CN AC_SUBST([LOCALE_ZH_CN]) ])