Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/wchar.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/wchar.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/wchar.m4 (revision 0) |
@@ -0,0 +1,69 @@ |
+dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues. |
+ |
+dnl Copyright (C) 2007-2008 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. |
+ |
+dnl Written by Eric Blake. |
+ |
+# wchar.m4 serial 6 |
+ |
+AC_DEFUN([gl_WCHAR_H], |
+[ |
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) |
+ AC_CACHE_CHECK([whether <wchar.h> is standalone], |
+ [gl_cv_header_wchar_h_standalone], |
+ [AC_COMPILE_IFELSE([[#include <wchar.h> |
+wchar_t w;]], |
+ [gl_cv_header_wchar_h_standalone=yes], |
+ [gl_cv_header_wchar_h_standalone=no])]) |
+ |
+ AC_REQUIRE([gt_TYPE_WINT_T]) |
+ if test $gt_cv_c_wint_t = yes; then |
+ HAVE_WINT_T=1 |
+ else |
+ HAVE_WINT_T=0 |
+ fi |
+ AC_SUBST([HAVE_WINT_T]) |
+ |
+ if test $gl_cv_header_wchar_h_standalone != yes || test $gt_cv_c_wint_t != yes; then |
+ WCHAR_H=wchar.h |
+ fi |
+ |
+ dnl Prepare for creating substitute <wchar.h>. |
+ dnl Do it always: WCHAR_H may be empty here but can be set later. |
+ dnl Check for <wchar.h> (missing in Linux uClibc when built without wide |
+ dnl character support). |
+ AC_CHECK_HEADERS_ONCE([wchar.h]) |
+ if test $ac_cv_header_wchar_h = yes; then |
+ HAVE_WCHAR_H=1 |
+ else |
+ HAVE_WCHAR_H=0 |
+ fi |
+ AC_SUBST([HAVE_WCHAR_H]) |
+ gl_CHECK_NEXT_HEADERS([wchar.h]) |
+]) |
+ |
+dnl Unconditionally enables the replacement of <wchar.h>. |
+AC_DEFUN([gl_REPLACE_WCHAR_H], |
+[ |
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) |
+ WCHAR_H=wchar.h |
+]) |
+ |
+AC_DEFUN([gl_WCHAR_MODULE_INDICATOR], |
+[ |
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. |
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) |
+ GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1 |
+]) |
+ |
+AC_DEFUN([gl_WCHAR_H_DEFAULTS], |
+[ |
+ GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH]) |
+ dnl Assume proper GNU behavior unless another module says otherwise. |
+ HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH]) |
+ REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH]) |
+ WCHAR_H=''; AC_SUBST([WCHAR_H]) |
+]) |