1# locale-zh.m4 serial 14 2dnl Copyright (C) 2003, 2005-2020 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Bruno Haible. 8 9dnl Determine the name of a chinese locale with GB18030 encoding. 10AC_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([ 16changequote(,)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> 25struct tm t; 26char buf[16]; 27int main () 28{ 29 /* On BeOS and Haiku, locales are not implemented in libc. Rather, libintl 30 imitates locale dependent behaviour by looking at the environment 31 variables, and all locales use the UTF-8 encoding. */ 32#if defined __BEOS__ || defined __HAIKU__ 33 return 1; 34#else 35 /* Check whether the given locale name is recognized by the system. */ 36# if defined _WIN32 && !defined __CYGWIN__ 37 /* On native Windows, setlocale(category, "") looks at the system settings, 38 not at the environment variables. Also, when an encoding suffix such 39 as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE 40 category of the locale to "C". */ 41 if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL 42 || strcmp (setlocale (LC_CTYPE, NULL), "C") == 0) 43 return 1; 44# else 45 if (setlocale (LC_ALL, "") == NULL) return 1; 46# endif 47 /* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646". 48 On Mac OS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) 49 is empty, and the behaviour of Tcl 8.4 in this locale is not useful. 50 On OpenBSD 4.0, when an unsupported locale is specified, setlocale() 51 succeeds but then nl_langinfo(CODESET) is "646". In this situation, 52 some unit tests fail. 53 On MirBSD 10, when an unsupported locale is specified, setlocale() 54 succeeds but then nl_langinfo(CODESET) is "UTF-8". */ 55# if HAVE_LANGINFO_CODESET 56 { 57 const char *cs = nl_langinfo (CODESET); 58 if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0 59 || strcmp (cs, "UTF-8") == 0) 60 return 1; 61 } 62# endif 63# ifdef __CYGWIN__ 64 /* On Cygwin, avoid locale names without encoding suffix, because the 65 locale_charset() function relies on the encoding suffix. Note that 66 LC_ALL is set on the command line. */ 67 if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; 68# endif 69 /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. 70 This excludes the UTF-8 encoding (except on MirBSD). */ 71 { 72 const char *p; 73 t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; 74 if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; 75 for (p = buf; *p != '\0'; p++) 76 if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) 77 return 1; 78 } 79 /* Check whether a typical GB18030 multibyte sequence is recognized as a 80 single wide character. This excludes the GB2312 and GBK encodings. */ 81 if (mblen ("\203\062\332\066", 5) != 4) 82 return 1; 83 return 0; 84#endif 85} 86changequote([,])dnl 87 ])]) 88 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then 89 case "$host_os" in 90 # Handle native Windows specially, because there setlocale() interprets 91 # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256", 92 # "fr" or "fra" as "French" or "French_France.1252", 93 # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252", 94 # "ja" as "Japanese" or "Japanese_Japan.932", 95 # and similar. 96 mingw*) 97 # Test for the hypothetical native Windows locale name. 98 if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 99 gt_cv_locale_zh_CN=Chinese_China.54936 100 else 101 # None found. 102 gt_cv_locale_zh_CN=none 103 fi 104 ;; 105 solaris2.8) 106 # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are 107 # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK. 108 # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core. 109 gt_cv_locale_zh_CN=none 110 ;; 111 *) 112 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because 113 # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the 114 # configure script would override the LC_ALL setting. Likewise for 115 # LC_CTYPE, which is also set at the beginning of the configure script. 116 # Test for the locale name without encoding suffix. 117 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 118 gt_cv_locale_zh_CN=zh_CN 119 else 120 # Test for the locale name with explicit encoding suffix. 121 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 122 gt_cv_locale_zh_CN=zh_CN.GB18030 123 else 124 # None found. 125 gt_cv_locale_zh_CN=none 126 fi 127 fi 128 ;; 129 esac 130 else 131 # If there was a link error, due to mblen(), the system is so old that 132 # it certainly doesn't have a chinese locale. 133 gt_cv_locale_zh_CN=none 134 fi 135 rm -fr conftest* 136 ]) 137 LOCALE_ZH_CN=$gt_cv_locale_zh_CN 138 AC_SUBST([LOCALE_ZH_CN]) 139]) 140