1 # locale-zh.m4 serial 15 2 dnl Copyright (C) 2003, 2005-2022 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 #include <locale.h> 17 #include <stdlib.h> 18 #include <time.h> 19 #if HAVE_LANGINFO_CODESET 20 # include <langinfo.h> 21 #endif 22 #include <stdlib.h> 23 #include <string.h> 24 struct tm t; 25 char buf[16]; 26 int main () 27 { 28 /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl 29 imitates locale dependent behaviour by looking at the environment 30 variables, and all locales use the UTF-8 encoding. */ 31 #if defined __BEOS__ || defined __HAIKU__ 32 return 1; 33 #else 34 /* Check whether the given locale name is recognized by the system. */ 35 # if defined _WIN32 && !defined __CYGWIN__ 36 /* On native Windows, setlocale(category, "") looks at the system settings, 37 not at the environment variables. Also, when an encoding suffix such 38 as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE 39 category of the locale to "C". */ 40 if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL 41 || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) 42 return 1; 43 # else 44 if (setlocale (LC_ALL, "") == NULL) return 1; 45 # endif 46 /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". 47 On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) 48 is empty, and the behaviour of Tcl 8.4 in this locale is not useful. 49 On OpenBSD 4.0, when an unsupported locale is specified, setlocale() 50 succeeds but then nl_langinfo(CODESET) is "646". In this situation, 51 some unit tests fail. 52 On MirBSD 10, when an unsupported locale is specified, setlocale() 53 succeeds but then nl_langinfo(CODESET) is "UTF-8". */ 54 # if HAVE_LANGINFO_CODESET 55 { 56 const char *cs = nl_langinfo (CODESET); 57 if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 58 || strcmp (cs, "UTF-8") == 0) 59 return 1; 60 } 61 # endif 62 # ifdef __CYGWIN__ 63 /* On Cygwin, avoid locale names without encoding suffix, because the 64 locale_charset() function relies on the encoding suffix. Note that 65 LC_ALL is set on the command line. */ 66 if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; 67 # endif 68 /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. 69 This excludes the UTF-8 encoding (except on MirBSD). */ 70 { 71 const char *p; 72 t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; 73 if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; 74 for (p = buf; *p != '\0'; p++) 75 if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) 76 return 1; 77 } 78 /* Check whether a typical GB18030 multibyte sequence is recognized as a 79 single wide character. This excludes the GB2312 and GBK encodings. */ 80 if (mblen ("\203\062\332\066", 5) != 4) 81 return 1; 82 return 0; 83 #endif 84 } 85 ]])]) 86 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then 87 case "$host_os" in 88 # Handle native Windows specially, because there setlocale() interprets 89 # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", 90 # "fr" or "fra" as "French" or "French_France.1252", 91 # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", 92 # "ja" as "Japanese" or "Japanese_Japan.932", 93 # and similar. 94 mingw*) 95 # Test for the hypothetical native Windows locale name. 96 if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 97 gt_cv_locale_zh_CN=Chinese_China.54936 98 else 99 # None found. 100 gt_cv_locale_zh_CN=none 101 fi 102 ;; 103 solaris2.8) 104 # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are 105 # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. 106 # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. 107 gt_cv_locale_zh_CN=none 108 ;; 109 *) 110 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because 111 # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the 112 # configure script would override the LC_ALL setting. Likewise for 113 # LC_CTYPE, which is also set at the beginning of the configure script. 114 # Test for the locale name without encoding suffix. 115 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 116 gt_cv_locale_zh_CN=zh_CN 117 else 118 # Test for the locale name with explicit encoding suffix. 119 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 120 gt_cv_locale_zh_CN=zh_CN.GB18030 121 else 122 # None found. 123 gt_cv_locale_zh_CN=none 124 fi 125 fi 126 ;; 127 esac 128 else 129 # If there was a link error, due to mblen(), the system is so old that 130 # it certainly doesn't have a chinese locale. 131 gt_cv_locale_zh_CN=none 132 fi 133 rm -fr conftest* 134 ]) 135 LOCALE_ZH_CN=$gt_cv_locale_zh_CN 136 AC_SUBST([LOCALE_ZH_CN]) 137 ]) 138
Indexes created Sun Apr 26 00:22:38 UTC 2026