$OpenBSD$

Index: libopenage/util/os.cpp
--- libopenage/util/os.cpp.orig
+++ libopenage/util/os.cpp
@@ -90,6 +90,9 @@ std::string self_exec_filename() {
 		return std::string{buf.get()};
 	}
 
+#elif __OpenBSD__
+	// TODO not yet implemented
+	return std::string("openage"); // FIXME: wild guess though
 #elif _WIN32
 	// TODO not yet implemented
 	return std::string("openage.exe"); // FIXME: wild guess though
