src/sdk/scriptingmanager.h currently includes <angelscript.h>, but all it uses is a pointer to asIScriptEngine, so a forward declaration would suffice:
-#include <angelscript.h>
#include "settings.h"
#include <wx/intl.h>
+class asIScriptEngine;
I found this one out 'cause I don't have <angelscript.h> -- shouldn't there be a --disable-angelscript or something for ./configure to turn off the parts that need it?