# wcwidth.m4 serial 5 dnl Copyright (C) 2006 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_CHECK_HEADERS_ONCE([wchar.h wctype.h]) AC_CHECK_FUNCS_ONCE([iswprint wcwidth]) AC_CHECK_DECLS([wcwidth], [], [], [ /* AIX 3.2.5 declares wcwidth in <string.h>. */ #include <string.h> #if HAVE_WCHAR_H /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before <wchar.h>. BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before <wchar.h>. */ # include <stdio.h> # include <time.h> # include <wchar.h> #endif ])])