--- socketimpl.cpp.orig	2004-08-07 22:01:02.577569008 -0500
+++ socketimpl.cpp	2004-08-07 22:01:23.868332320 -0500
@@ -15,6 +15,7 @@
  ***************************************************************************/
 
 #include <log4cxx/config.h>
+#include <cerrno>
 
 #ifdef WIN32
 #include <windows.h>