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-rw-r--r--gl/m4/wcwidth.m430
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diff --git a/gl/m4/wcwidth.m4 b/gl/m4/wcwidth.m4
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1# wcwidth.m4 serial 8
2dnl Copyright (C) 2006, 2007 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_WCWIDTH],
8[
9 dnl Persuade glibc <wchar.h> to declare wcwidth().
10 AC_REQUIRE([AC_GNU_SOURCE])
11
12 AC_REQUIRE([AC_C_INLINE])
13 AC_REQUIRE([gt_TYPE_WCHAR_T])
14 AC_REQUIRE([gt_TYPE_WINT_T])
15
16 AC_CHECK_HEADERS_ONCE([wchar.h])
17 AC_CHECK_FUNCS_ONCE([wcwidth])
18
19 AC_CHECK_DECLS([wcwidth], [], [], [
20/* AIX 3.2.5 declares wcwidth in <string.h>. */
21#include <string.h>
22/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
23 <wchar.h>.
24 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
25 before <wchar.h>. */
26#include <stddef.h>
27#include <stdio.h>
28#include <time.h>
29#include <wchar.h>
30])])