Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/errno_h.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/errno_h.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/errno_h.m4 (revision 0) |
@@ -0,0 +1,113 @@ |
+# errno_h.m4 serial 1 |
+dnl Copyright (C) 2004, 2006, 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. |
+ |
+AC_DEFUN([gl_HEADER_ERRNO_H], |
+[ |
+ dnl Use AC_REQUIRE here, so that the default behavior below is expanded |
+ dnl once only, before all statements that occur in other macros. |
+ AC_REQUIRE([gl_HEADER_ERRNO_H_BODY]) |
+]) |
+ |
+AC_DEFUN([gl_HEADER_ERRNO_H_BODY], |
+[ |
+ AC_REQUIRE([AC_PROG_CC]) |
+ AC_CACHE_CHECK([for complete errno.h], gl_cv_header_errno_h_complete, [ |
+ AC_EGREP_CPP(booboo,[ |
+#include <errno.h> |
+#if !defined ENOMSG |
+booboo |
+#endif |
+#if !defined EIDRM |
+booboo |
+#endif |
+#if !defined ENOLINK |
+booboo |
+#endif |
+#if !defined EPROTO |
+booboo |
+#endif |
+#if !defined EMULTIHOP |
+booboo |
+#endif |
+#if !defined EBADMSG |
+booboo |
+#endif |
+#if !defined EOVERFLOW |
+booboo |
+#endif |
+#if !defined ENOTSUP |
+booboo |
+#endif |
+#if !defined ECANCELED |
+booboo |
+#endif |
+ ], |
+ [gl_cv_header_errno_h_complete=no], |
+ [gl_cv_header_errno_h_complete=yes]) |
+ ]) |
+ if test $gl_cv_header_errno_h_complete = yes; then |
+ ERRNO_H='' |
+ else |
+ gl_CHECK_NEXT_HEADERS([errno.h]) |
+ ERRNO_H='errno.h' |
+ fi |
+ AC_SUBST([ERRNO_H]) |
+ gl_REPLACE_ERRNO_VALUE([EMULTIHOP]) |
+ gl_REPLACE_ERRNO_VALUE([ENOLINK]) |
+ gl_REPLACE_ERRNO_VALUE([EOVERFLOW]) |
+]) |
+ |
+# Assuming $1 = EOVERFLOW. |
+# The EOVERFLOW errno value ought to be defined in <errno.h>, according to |
+# POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and |
+# some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined. |
+# Check for the value of EOVERFLOW. |
+# Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE. |
+AC_DEFUN([gl_REPLACE_ERRNO_VALUE], |
+[ |
+ if test -n "$ERRNO_H"; then |
+ AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [ |
+ AC_EGREP_CPP(yes,[ |
+#include <errno.h> |
+#ifdef ]$1[ |
+yes |
+#endif |
+ ], |
+ [gl_cv_header_errno_h_]$1[=yes], |
+ [gl_cv_header_errno_h_]$1[=no]) |
+ if test $gl_cv_header_errno_h_]$1[ = no; then |
+ AC_EGREP_CPP(yes,[ |
+#define _XOPEN_SOURCE_EXTENDED 1 |
+#include <errno.h> |
+#ifdef ]$1[ |
+yes |
+#endif |
+ ], [gl_cv_header_errno_h_]$1[=hidden]) |
+ if test $gl_cv_header_errno_h_]$1[ = hidden; then |
+ dnl The macro exists but is hidden. |
+ dnl Define it to the same value. |
+ AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [ |
+#define _XOPEN_SOURCE_EXTENDED 1 |
+#include <errno.h> |
+/* The following two lines are a workaround against an autoconf-2.52 bug. */ |
+#include <stdio.h> |
+#include <stdlib.h> |
+]) |
+ fi |
+ fi |
+ ]) |
+ case $gl_cv_header_errno_h_]$1[ in |
+ yes | no) |
+ ]$1[_HIDDEN=0; ]$1[_VALUE= |
+ ;; |
+ *) |
+ ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1[" |
+ ;; |
+ esac |
+ AC_SUBST($1[_HIDDEN]) |
+ AC_SUBST($1[_VALUE]) |
+ fi |
+]) |