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authorLorry Tar Creator <lorry-tar-importer@lorry>2007-03-22 21:23:21 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2007-03-22 21:23:21 +0000
commitcbf5993c43f49281173f185863577d86bfac6eae (patch)
tree90737c96cf15b97273a2bdc5950b3cf09f1d94ca /m4/wcwidth.m4
downloadcoreutils-tarball-cbf5993c43f49281173f185863577d86bfac6eae.tar.gz
coreutils-6.9coreutils-6.9
Diffstat (limited to 'm4/wcwidth.m4')
-rw-r--r--m4/wcwidth.m430
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/wcwidth.m4 b/m4/wcwidth.m4
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+++ b/m4/wcwidth.m4
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+# wcwidth.m4 serial 8
+dnl Copyright (C) 2006, 2007 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_WCWIDTH],
+[
+ dnl Persuade glibc <wchar.h> to declare wcwidth().
+ AC_REQUIRE([AC_GNU_SOURCE])
+
+ AC_REQUIRE([AC_C_INLINE])
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+ AC_REQUIRE([gt_TYPE_WINT_T])
+
+ AC_CHECK_HEADERS_ONCE([wchar.h])
+ AC_CHECK_FUNCS_ONCE([wcwidth])
+
+ AC_CHECK_DECLS([wcwidth], [], [], [
+/* AIX 3.2.5 declares wcwidth in <string.h>. */
+#include <string.h>
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
+ before <wchar.h>. */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+])])