https://bugs.gentoo.org/58287 (math.h/SDLKey for gcc 3.4)
https://bugs.gentoo.org/272374 (cstdio for gcc 4.4)
https://bugs.gentoo.org/607428 (signed int for segfault)
--- a/src/engine/cTextureFont.cpp
+++ b/src/engine/cTextureFont.cpp
@@ -33,2 +33,3 @@
 #include <GL/glu.h>
+#include <math.h>
 #include "cTextureManager.hpp"
--- a/src/engine/dbg.cpp
+++ b/src/engine/dbg.cpp
@@ -26,2 +26,3 @@
 #include <cstdlib>
+#include <cstdio>
 #include <string>
--- a/src/game/cMainMenu.cpp
+++ b/src/game/cMainMenu.cpp
@@ -401,3 +401,3 @@
 	
-	static unsigned int i = 0;
+	static int i = 0;
 	if ( mLastLetter + 100 < now )
--- a/src/game/cOptions.cpp
+++ b/src/game/cOptions.cpp
@@ -203,3 +203,3 @@
 		}
-		int (keys.keys[i]) = key;	// IS THIS SAFE?
+		keys.keys[i] = (SDLKey)key;