1 # setlocale.m4 serial 6
2 dnl Copyright (C) 2011-2019 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.
7 AC_DEFUN([gl_FUNC_SETLOCALE],
9 AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
10 AC_REQUIRE([AC_CANONICAL_HOST])
12 dnl On native Windows systems, setlocale(category,NULL) does not look at
13 dnl the environment variables LC_ALL, category, and LANG.
14 mingw*) REPLACE_SETLOCALE=1 ;;
15 dnl On Cygwin 1.5.x, setlocale always succeeds but setlocale(LC_CTYPE,NULL)
16 dnl is then still "C".
19 1.5.*) REPLACE_SETLOCALE=1 ;;
22 dnl On Android 4.3, setlocale(category,"C") always fails.
24 AC_CACHE_CHECK([whether setlocale supports the C locale],
25 [gl_cv_func_setlocale_works],
31 return setlocale (LC_ALL, "C") == NULL;
33 [gl_cv_func_setlocale_works=yes],
34 [gl_cv_func_setlocale_works=no],
36 # Guess no on Android.
37 linux*-android*) gl_cv_func_setlocale_works="guessing no";;
38 # Guess yes otherwise.
39 *) gl_cv_func_setlocale_works="guessing yes";;
43 case "$gl_cv_func_setlocale_works" in
45 *) REPLACE_SETLOCALE=1 ;;
51 # Prerequisites of lib/setlocale.c.
52 AC_DEFUN([gl_PREREQ_SETLOCALE],
54 dnl No need to check for CFLocaleCopyPreferredLanguages and
55 dnl CFPreferencesCopyAppValue because lib/setlocale.c is not used on Mac OS X.
56 dnl (The Mac OS X specific code is only used in libintl.)