Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/strerror.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/strerror.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/strerror.m4 (revision 0) |
@@ -0,0 +1,68 @@ |
+# strerror.m4 serial 9 |
+dnl Copyright (C) 2002, 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. |
+ |
+AC_DEFUN([gl_FUNC_STRERROR], |
+[ |
+ AC_REQUIRE([gl_FUNC_STRERROR_SEPARATE]) |
+ if test $REPLACE_STRERROR = 1; then |
+ AC_LIBOBJ([strerror]) |
+ AC_DEFINE_UNQUOTED([REPLACE_STRERROR], [$REPLACE_STRERROR], |
+ [Define this to 1 if strerror is broken.]) |
+ fi |
+]) |
+ |
+# Like gl_FUNC_STRERROR, except prepare for separate compilation (no AC_LIBOBJ). |
+AC_DEFUN([gl_FUNC_STRERROR_SEPARATE], |
+[ |
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) |
+ AC_REQUIRE([gl_HEADER_ERRNO_H]) |
+ if test -z "$ERRNO_H"; then |
+ AC_CACHE_CHECK([for working strerror function], |
+ [gl_cv_func_working_strerror], |
+ [AC_RUN_IFELSE( |
+ [AC_LANG_PROGRAM( |
+ [[#include <string.h> |
+ ]], |
+ [[return !*strerror (-2);]])], |
+ [gl_cv_func_working_strerror=yes], |
+ [gl_cv_func_working_strerror=no], |
+ [dnl Assume crossbuild works if it compiles. |
+ AC_COMPILE_IFELSE( |
+ [AC_LANG_PROGRAM( |
+ [[#include <string.h> |
+ ]], |
+ [[return !*strerror (-2);]])], |
+ [gl_cv_func_working_strerror=yes], |
+ [gl_cv_func_working_strerror=no]) |
+ ]) |
+ ]) |
+ if test $gl_cv_func_working_strerror = no; then |
+ dnl The system's strerror() fails to return a string for out-of-range |
+ dnl integers. Replace it. |
+ REPLACE_STRERROR=1 |
+ fi |
+ else |
+ dnl The system's strerror() cannot know about the new errno values we add |
+ dnl to <errno.h>. Replace it. |
+ REPLACE_STRERROR=1 |
+ fi |
+ if test $REPLACE_STRERROR = 1; then |
+ gl_PREREQ_STRERROR |
+ fi |
+]) |
+ |
+# Prerequisites of lib/strerror.c. |
+AC_DEFUN([gl_PREREQ_STRERROR], [ |
+ AC_CHECK_DECLS([strerror]) |
+ AC_CHECK_HEADERS_ONCE([sys/socket.h]) |
+ if test $ac_cv_header_sys_socket_h != yes; then |
+ dnl We cannot use AC_CHECK_HEADERS_ONCE here, because that would make |
+ dnl the check for those headers unconditional; yet cygwin reports |
+ dnl that the headers are present but cannot be compiled (since on |
+ dnl cygwin, all socket information should come from sys/socket.h). |
+ AC_CHECK_HEADERS([winsock2.h]) |
+ fi |
+]) |