2 dnl Copyright (C) 2006, 2007 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_WCWIDTH],
9 dnl Persuade glibc <wchar.h> to declare wcwidth().
10 AC_REQUIRE([AC_GNU_SOURCE])
12 AC_REQUIRE([gt_TYPE_WCHAR_T])
13 AC_REQUIRE([gt_TYPE_WINT_T])
15 AC_CHECK_HEADERS_ONCE([wchar.h])
16 AC_CHECK_FUNCS_ONCE([wcwidth])
18 AC_CHECK_DECLS([wcwidth], [], [], [
19 /* AIX 3.2.5 declares wcwidth in <string.h>. */
21 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
23 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
31 if test $ac_cv_func_wcwidth = no; then