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-rw-r--r--m4/setlocale.m485
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diff --git a/m4/setlocale.m4 b/m4/setlocale.m4
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+# setlocale.m4 serial 7
+dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SETLOCALE],
+[
+ AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+ AC_REQUIRE([gl_FUNC_SETLOCALE_NULL])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
+ dnl Test whether we need to improve on the general working of setlocale.
+ NEED_SETLOCALE_IMPROVED=0
+ case "$host_os" in
+ dnl On native Windows systems, setlocale(category,NULL) does not look at
+ dnl the environment variables LC_ALL, category, and LANG.
+ mingw*) NEED_SETLOCALE_IMPROVED=1 ;;
+ dnl On Cygwin 1.5.x, setlocale always succeeds but setlocale(LC_CTYPE,NULL)
+ dnl is then still "C".
+ cygwin*)
+ case `uname -r` in
+ 1.5.*) NEED_SETLOCALE_IMPROVED=1 ;;
+ esac
+ ;;
+ dnl On Android 4.3, setlocale(category,"C") always fails.
+ *)
+ AC_CACHE_CHECK([whether setlocale supports the C locale],
+ [gl_cv_func_setlocale_works],
+ [AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
+#include <locale.h>
+int main ()
+{
+ return setlocale (LC_ALL, "C") == NULL;
+}]])],
+ [gl_cv_func_setlocale_works=yes],
+ [gl_cv_func_setlocale_works=no],
+ [case "$host_os" in
+ # Guess no on Android.
+ linux*-android*) gl_cv_func_setlocale_works="guessing no";;
+ # Guess yes otherwise.
+ *) gl_cv_func_setlocale_works="guessing yes";;
+ esac
+ ])
+ ])
+ case "$gl_cv_func_setlocale_works" in
+ *yes) ;;
+ *) NEED_SETLOCALE_IMPROVED=1 ;;
+ esac
+ ;;
+ esac
+ AC_DEFINE_UNQUOTED([NEED_SETLOCALE_IMPROVED], [$NEED_SETLOCALE_IMPROVED],
+ [Define to 1 to enable general improvements of setlocale.])
+
+ dnl Test whether we need a multithread-safe setlocale(category,NULL).
+ NEED_SETLOCALE_MTSAFE=0
+ if test $SETLOCALE_NULL_ALL_MTSAFE = 0 || test $SETLOCALE_NULL_ONE_MTSAFE = 0; then
+ NEED_SETLOCALE_MTSAFE=1
+ fi
+ AC_DEFINE_UNQUOTED([NEED_SETLOCALE_MTSAFE], [$NEED_SETLOCALE_MTSAFE],
+ [Define to 1 to enable a multithread-safety fix of setlocale.])
+
+ if test $NEED_SETLOCALE_IMPROVED = 1 || test $NEED_SETLOCALE_MTSAFE = 1; then
+ REPLACE_SETLOCALE=1
+ fi
+
+ if test $NEED_SETLOCALE_MTSAFE = 1; then
+ LIB_SETLOCALE="$LIB_SETLOCALE_NULL"
+ else
+ LIB_SETLOCALE=
+ fi
+ dnl LIB_SETLOCALE is expected to be '-pthread' or '-lpthread' on AIX with gcc
+ dnl or xlc, and empty otherwise.
+ AC_SUBST([LIB_SETLOCALE])
+])
+
+# Prerequisites of lib/setlocale.c.
+AC_DEFUN([gl_PREREQ_SETLOCALE],
+[
+ dnl No need to check for CFLocaleCopyPreferredLanguages and
+ dnl CFPreferencesCopyAppValue because lib/setlocale.c is not used on Mac OS X.
+ dnl (The Mac OS X specific code is only used in libintl.)
+ :
+])