1 # locale-zh.m4 serial 12 2 dnl Copyright (C) 2003, 2005-2012 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 (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__ 32 /* On native Windows, setlocale(category, "") looks at the system settings, 33 not at the environment variables. Also, when an encoding suffix such 34 as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE 35 category of the locale to "C". */ 36 if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL 37 || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) 38 return 1; 39 #else 40 if (setlocale (LC_ALL, "") == NULL) return 1; 41 #endif 42 /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". 43 On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) 44 is empty, and the behaviour of Tcl 8.4 in this locale is not useful. 45 On OpenBSD 4.0, when an unsupported locale is specified, setlocale() 46 succeeds but then nl_langinfo(CODESET) is "646". In this situation, 47 some unit tests fail. 48 On MirBSD 10, when an unsupported locale is specified, setlocale() 49 succeeds but then nl_langinfo(CODESET) is "UTF-8". */ 50 #if HAVE_LANGINFO_CODESET 51 { 52 const char *cs = nl_langinfo (CODESET); 53 if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 54 || strcmp (cs, "UTF-8") == 0) 55 return 1; 56 } 57 #endif 58 #ifdef __CYGWIN__ 59 /* On Cygwin, avoid locale names without encoding suffix, because the 60 locale_charset() function relies on the encoding suffix. Note that 61 LC_ALL is set on the command line. */ 62 if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; 63 #endif 64 /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. 65 This excludes the UTF-8 encoding (except on MirBSD). */ 66 t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; 67 if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; 68 for (p = buf; *p != '\0'; p++) 69 if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) 70 return 1; 71 /* Check whether a typical GB18030 multibyte sequence is recognized as a 72 single wide character. This excludes the GB2312 and GBK encodings. */ 73 if (mblen ("\203\062\332\066", 5) != 4) 74 return 1; 75 return 0; 76 } 77 changequote([,])dnl 78 ])]) 79 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then 80 case "$host_os" in 81 # Handle native Windows specially, because there setlocale() interprets 82 # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", 83 # "fr" or "fra" as "French" or "French_France.1252", 84 # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", 85 # "ja" as "Japanese" or "Japanese_Japan.932", 86 # and similar. 87 mingw*) 88 # Test for the hypothetical native Windows locale name. 89 if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 90 gt_cv_locale_zh_CN=Chinese_China.54936 91 else 92 # None found. 93 gt_cv_locale_zh_CN=none 94 fi 95 ;; 96 solaris2.8) 97 # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are 98 # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. 99 # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. 100 gt_cv_locale_zh_CN=none 101 ;; 102 *) 103 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because 104 # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the 105 # configure script would override the LC_ALL setting. Likewise for 106 # LC_CTYPE, which is also set at the beginning of the configure script. 107 # Test for the locale name without encoding suffix. 108 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 109 gt_cv_locale_zh_CN=zh_CN 110 else 111 # Test for the locale name with explicit encoding suffix. 112 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 113 gt_cv_locale_zh_CN=zh_CN.GB18030 114 else 115 # None found. 116 gt_cv_locale_zh_CN=none 117 fi 118 fi 119 ;; 120 esac 121 else 122 # If there was a link error, due to mblen(), the system is so old that 123 # it certainly doesn't have a chinese locale. 124 gt_cv_locale_zh_CN=none 125 fi 126 rm -fr conftest* 127 ]) 128 LOCALE_ZH_CN=$gt_cv_locale_zh_CN 129 AC_SUBST([LOCALE_ZH_CN]) 130 ]) 131
