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Diffstat (limited to 'gl/m4/wcwidth.m4')
| -rw-r--r-- | gl/m4/wcwidth.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gl/m4/wcwidth.m4 b/gl/m4/wcwidth.m4 new file mode 100644 index 00000000..b4834991 --- /dev/null +++ b/gl/m4/wcwidth.m4 @@ -0,0 +1,30 @@ +# 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> +])]) |