1 # locale-zh.m4 serial 6 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 chinese locale with GB18030 encoding. 10 AC_DEFUN([gt_LOCALE_ZH_CN], 11 [ 12 AC_REQUIRE([AC_CANONICAL_HOST]) 13 AC_REQUIRE([AM_LANGINFO_CODESET]) 14 AC_CACHE_CHECK([for a transitional chinese locale], [gt_cv_locale_zh_CN], [ 15 AC_LANG_CONFTEST([AC_LANG_SOURCE([ 16 changequote(,)dnl 17 #include <locale.h> 18 #include <stdlib.h> 19 #include <time.h> 20 #if HAVE_LANGINFO_CODESET 21 # include <langinfo.h> 22 #endif 23 #include <stdlib.h> 24 #include <string.h> 25 struct tm t; 26 char buf[16]; 27 int main () 28 { 29 const char *p; 30 /* Check whether the given locale name is recognized by the system. */ 31 if (setlocale (LC_ALL, "") == NULL) return 1; 32 /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". 33 On MacOS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) 34 is empty, and the behaviour of Tcl 8.4 in this locale is not useful. 35 On OpenBSD 4.0, when an unsupported locale is specified, setlocale() 36 succeeds but then nl_langinfo(CODESET) is "646". In this situation, 37 some unit tests fail. */ 38 #if HAVE_LANGINFO_CODESET 39 { 40 const char *cs = nl_langinfo (CODESET); 41 if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0) 42 return 1; 43 } 44 #endif 45 #ifdef __CYGWIN__ 46 /* On Cygwin, avoid locale names without encoding suffix, because the 47 locale_charset() function relies on the encoding suffix. Note that 48 LC_ALL is set on the command line. */ 49 if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; 50 #endif 51 /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. 52 This excludes the UTF-8 encoding. */ 53 t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; 54 if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; 55 for (p = buf; *p != '\0'; p++) 56 if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) 57 return 1; 58 /* Check whether a typical GB18030 multibyte sequence is recognized as a 59 single wide character. This excludes the GB2312 and GBK encodings. */ 60 if (mblen ("\203\062\332\066", 5) != 4) 61 return 1; 62 return 0; 63 } 64 changequote([,])dnl 65 ])]) 66 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then 67 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because 68 # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the 69 # configure script would override the LC_ALL setting. Likewise for 70 # LC_CTYPE, which is also set at the beginning of the configure script. 71 # Test for the locale name without encoding suffix. 72 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 73 gt_cv_locale_zh_CN=zh_CN 74 else 75 # Test for the locale name with explicit encoding suffix. 76 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 77 gt_cv_locale_zh_CN=zh_CN.GB18030 78 else 79 # None found. 80 gt_cv_locale_zh_CN=none 81 fi 82 fi 83 else 84 # If there was a link error, due to mblen(), the system is so old that 85 # it certainly doesn't have a chinese locale. 86 gt_cv_locale_zh_CN=none 87 fi 88 rm -fr conftest* 89 ]) 90 LOCALE_ZH_CN=$gt_cv_locale_zh_CN 91 AC_SUBST([LOCALE_ZH_CN]) 92 ]) 93
