1 # locale-zh.m4 serial 14
2 dnl Copyright (C) 2003, 2005-2019 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.
9 dnl Determine the name of a chinese locale with GB18030 encoding.
10 AC_DEFUN([gt_LOCALE_ZH_CN],
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([
20 #if HAVE_LANGINFO_CODESET
21 # include <langinfo.h>
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__
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)
45 if (setlocale (LC_ALL, "") == NULL) return 1;
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,
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
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)
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;
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). */
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)
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)
88 if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
90 # Handle native Windows specially, because there setlocale() interprets
91 # "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
92 # "fr" or "fra" as "French" or "French_France.1252",
93 # "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
94 # "ja" as "Japanese" or "Japanese_Japan.932",
97 # Test for the hypothetical native Windows locale name.
98 if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
99 gt_cv_locale_zh_CN=Chinese_China.54936
102 gt_cv_locale_zh_CN=none
106 # On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
107 # broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
108 # Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
109 gt_cv_locale_zh_CN=none
112 # Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
113 # otherwise on Mac OS X 10.3.5 the LC_TIME=C from the beginning of the
114 # configure script would override the LC_ALL setting. Likewise for
115 # LC_CTYPE, which is also set at the beginning of the configure script.
116 # Test for the locale name without encoding suffix.
117 if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
118 gt_cv_locale_zh_CN=zh_CN
120 # Test for the locale name with explicit encoding suffix.
121 if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
122 gt_cv_locale_zh_CN=zh_CN.GB18030
125 gt_cv_locale_zh_CN=none
131 # If there was a link error, due to mblen(), the system is so old that
132 # it certainly doesn't have a chinese locale.
133 gt_cv_locale_zh_CN=none
137 LOCALE_ZH_CN=$gt_cv_locale_zh_CN
138 AC_SUBST([LOCALE_ZH_CN])