1# locale-zh.m4 serial 3 2dnl Copyright (C) 2003, 2005-2007 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 macosx= 16changequote(,)dnl 17 case "$host_os" in 18 darwin[56]*) ;; 19 darwin*) macosx=yes;; 20 esac 21changequote([,])dnl 22 if test -n "$macosx"; then 23 # On Darwin 7 (MacOS X), the libc supports some locales in non-UTF-8 24 # encodings, but the kernel does not support them. The documentation 25 # says: 26 # "... all code that calls BSD system routines should ensure 27 # that the const *char parameters of these routines are in UTF-8 28 # encoding. All BSD system functions expect their string 29 # parameters to be in UTF-8 encoding and nothing else." 30 # See the comments in config.charset. Therefore we bypass the test. 31 gt_cv_locale_zh_CN=none 32 else 33 AC_LANG_CONFTEST([AC_LANG_SOURCE([ 34changequote(,)dnl 35#include <locale.h> 36#include <stdlib.h> 37#include <time.h> 38#if HAVE_LANGINFO_CODESET 39# include <langinfo.h> 40#endif 41#include <stdlib.h> 42#include <string.h> 43struct tm t; 44char buf[16]; 45int main () 46{ 47 const char *p; 48 /* Check whether the given locale name is recognized by the system. */ 49 if (setlocale (LC_ALL, "") == NULL) return 1; 50 /* Check whether nl_langinfo(CODESET) is nonempty. 51 On MacOS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET) 52 is empty, and the behaviour of Tcl 8.4 in this locale is not useful. */ 53#if HAVE_LANGINFO_CODESET 54 if (nl_langinfo (CODESET) [0] == '\0') return 1; 55#endif 56#ifdef __CYGWIN__ 57 /* On Cygwin, avoid locale names without encoding suffix, because the 58 locale_charset() function relies on the encoding suffix. Note that 59 LC_ALL is set on the command line. */ 60 if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1; 61#endif 62 /* Check whether in a month name, no byte in the range 0x80..0x9F occurs. 63 This excludes the UTF-8 encoding. */ 64 t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4; 65 if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1; 66 for (p = buf; *p != '\0'; p++) 67 if ((unsigned char) *p >= 0x80 && (unsigned char) *p < 0xa0) 68 return 1; 69 /* Check whether a typical GB18030 multibyte sequence is recognized as a 70 single wide character. This excludes the GB2312 and GBK encodings. */ 71 if (mblen ("\203\062\332\066", 5) != 4) 72 return 1; 73 return 0; 74} 75changequote([,])dnl 76 ])]) 77 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then 78 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because 79 # otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the 80 # configure script would override the LC_ALL setting. Likewise for 81 # LC_CTYPE, which is also set at the beginning of the configure script. 82 # Test for the locale name without encoding suffix. 83 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 84 gt_cv_locale_zh_CN=zh_CN 85 else 86 # Test for the locale name with explicit encoding suffix. 87 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then 88 gt_cv_locale_zh_CN=zh_CN.GB18030 89 else 90 # None found. 91 gt_cv_locale_zh_CN=none 92 fi 93 fi 94 else 95 # If there was a link error, due to mblen(), the system is so old that 96 # it certainly doesn't have a chinese locale. 97 gt_cv_locale_zh_CN=none 98 fi 99 rm -fr conftest* 100 fi 101 ]) 102 LOCALE_ZH_CN=$gt_cv_locale_zh_CN 103 AC_SUBST([LOCALE_ZH_CN]) 104]) 105