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])]) 31