some Motif compilation fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5930 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/sckipc.h

@@ -20,7 +20,9 @@
 #endif
 
 #include "wx/defs.h"
-#include "wx/setup.h"
+
+#if wxUSE_SOCKETS
+
 #include "wx/ipcbase.h"
 #include "wx/socket.h"
 #include "wx/sckstrm.h"
@@ -136,4 +138,6 @@ public:
   virtual wxConnectionBase *OnMakeConnection();
 };
 
+#endif // wxUSE_SOCKETS
+
 #endif // ipcsock.h

src/motif/gsockmot.c

@@ -117,4 +117,9 @@ void _GSocket_Disable_Events(GSocket *socket)
   _GSocket_Uninstall_Callback(socket, GSOCK_OUTPUT);
 }
 
-#endif /* wxUSE_SOCKETS */
+#else /* !wxUSE_SOCKETS */
+
+/* some compilers don't like having empty source files */
+static int wxDummyGsockVar = 0;
+
+#endif /* wxUSE_SOCKETS/!wxUSE_SOCKETS */