diff --git a/sc2/src/sc2code/libs/input/input_common.h b/sc2/src/sc2code/libs/input/input_common.h
new file mode 100644
index 000000000..134e177ad
--- /dev/null
+++ b/sc2/src/sc2code/libs/input/input_common.h
@@ -0,0 +1,33 @@
+//Copyright Paul Reiche, Fred Ford. 1992-2002
+
+/*
+ *  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 INPUT_COMMON_H
+#define INPUT_COMMON_H
+
+// driver for TFB_InitInput
+enum
+{
+	TFB_INPUTDRIVER_SDL
+};
+
+// flags for TFB_InitInput
+//#define TFB_INPUTFLAGS_ETC (1<<0)
+
+int TFB_InitInput (int driver, int flags);
+
+#endif
diff --git a/sc2/src/sc2code/libs/sound/sound_common.h b/sc2/src/sc2code/libs/sound/sound_common.h
new file mode 100644
index 000000000..16f24e4ed
--- /dev/null
+++ b/sc2/src/sc2code/libs/sound/sound_common.h
@@ -0,0 +1,33 @@
+//Copyright Paul Reiche, Fred Ford. 1992-2002
+
+/*
+ *  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 SOUND_COMMON_H
+#define SOUND_COMMON_H
+
+// driver for TFB_InitSound
+enum
+{
+	TFB_SOUNDDRIVER_SDL
+};
+
+// flags for TFB_InitSound
+//#define TFB_SOUNDFLAGS_ETC (1<<0)
+
+int TFB_InitSound (int driver, int flags, int frequency);
+
+#endif