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# locale-zh.m4 serial 6
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dnl Copyright (C) 2003, 2005-2010 Free Software Foundation, Inc.
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# locale-zh.m4 serial 11
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dnl Copyright (C) 2003, 2005-2012 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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/* Check whether the given locale name is recognized by the system. */
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#if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
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/* On native Windows, setlocale(category, "") looks at the system settings,
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not at the environment variables. Also, when an encoding suffix such
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as ".65001" or ".54936" is specified, it succeeds but sets the LC_CTYPE
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category of the locale to "C". */
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if (setlocale (LC_ALL, getenv ("LC_ALL")) == NULL
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|| strcmp (setlocale (LC_CTYPE, NULL), "C") == 0)
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if (setlocale (LC_ALL, "") == NULL) return 1;
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/* Check whether nl_langinfo(CODESET) is nonempty and not "ASCII" or "646".
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On MacOS X 10.3.5 (Darwin 7.5) in the fr_FR locale, nl_langinfo(CODESET)
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is empty, and the behaviour of Tcl 8.4 in this locale is not useful.
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On OpenBSD 4.0, when an unsupported locale is specified, setlocale()
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succeeds but then nl_langinfo(CODESET) is "646". In this situation,
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some unit tests fail. */
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On MirBSD 10, when an unsupported locale is specified, setlocale()
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succeeds but then nl_langinfo(CODESET) is "UTF-8". */
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#if HAVE_LANGINFO_CODESET
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const char *cs = nl_langinfo (CODESET);
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if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0)
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if (cs[0] == '\0' || strcmp (cs, "ASCII") == 0 || strcmp (cs, "646") == 0
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|| strcmp (cs, "UTF-8") == 0)
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if (strchr (getenv ("LC_ALL"), '.') == NULL) return 1;
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/* Check whether in a month name, no byte in the range 0x80..0x9F occurs.
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This excludes the UTF-8 encoding. */
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This excludes the UTF-8 encoding (except on MirBSD). */
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t.tm_year = 1975 - 1900; t.tm_mon = 2 - 1; t.tm_mday = 4;
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if (strftime (buf, sizeof (buf), "%B", &t) < 2) return 1;
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for (p = buf; *p != '\0'; p++)
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changequote([,])dnl
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if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
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# Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
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# otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
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# configure script would override the LC_ALL setting. Likewise for
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# LC_CTYPE, which is also set at the beginning of the configure script.
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# Test for the locale name without encoding suffix.
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if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN
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# Test for the locale name with explicit encoding suffix.
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if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN.GB18030
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# Handle native Windows specially, because there setlocale() interprets
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# "ar" as "Arabic" or "Arabic_Saudi Arabia.1256",
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# "fr" or "fra" as "French" or "French_France.1252",
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# "ge"(!) or "deu"(!) as "German" or "German_Germany.1252",
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# "ja" as "Japanese" or "Japanese_Japan.932",
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# Test for the hypothetical native Windows locale name.
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if (LC_ALL=Chinese_China.54936 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=Chinese_China.54936
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gt_cv_locale_zh_CN=none
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# On Solaris 8, the locales zh_CN.GB18030, zh_CN.GBK, zh.GBK are
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# broken. One witness is the test case in gl_MBRTOWC_SANITYCHECK.
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# Another witness is that "LC_ALL=zh_CN.GB18030 bash -c true" dumps core.
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gt_cv_locale_zh_CN=none
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# Setting LC_ALL is not enough. Need to set LC_TIME to empty, because
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# otherwise on MacOS X 10.3.5 the LC_TIME=C from the beginning of the
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# configure script would override the LC_ALL setting. Likewise for
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# LC_CTYPE, which is also set at the beginning of the configure script.
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# Test for the locale name without encoding suffix.
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if (LC_ALL=zh_CN LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN
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# Test for the locale name with explicit encoding suffix.
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if (LC_ALL=zh_CN.GB18030 LC_TIME= LC_CTYPE= ./conftest; exit) 2>/dev/null; then
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gt_cv_locale_zh_CN=zh_CN.GB18030
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gt_cv_locale_zh_CN=none
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# If there was a link error, due to mblen(), the system is so old that
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# it certainly doesn't have a chinese locale.