diff --git a/sc2/src/port.h b/sc2/src/port.h
index ad6100d17..3cdf4cea7 100644
--- a/sc2/src/port.h
+++ b/sc2/src/port.h
@@ -12,7 +12,9 @@
 #define stricmp strcasecmp
 #endif
 
+#ifndef HAVE_STRUPR
 char *strupr (char *str);
+#endif
 
 #endif  /* _PORT_H */
 
diff --git a/sc2/src/sc2code/comm.h b/sc2/src/sc2code/comm.h
new file mode 100644
index 000000000..00ffe011b
--- /dev/null
+++ b/sc2/src/sc2code/comm.h
@@ -0,0 +1,23 @@
+/*
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _COMM_H
+#define _COMM_H
+
+void init_xform_control (void);
+
+#endif  /* _COMM_H */
+