diff -up cdogs-sdl-0.6.3/CMakeLists.txt.cmake cdogs-sdl-0.6.3/CMakeLists.txt
--- cdogs-sdl-0.6.3/CMakeLists.txt.cmake	2016-11-14 14:30:05.000000000 +0100
+++ cdogs-sdl-0.6.3/CMakeLists.txt	2016-12-14 11:49:41.199409251 +0100
@@ -107,7 +107,7 @@ else()
 		endif()
 	endif()
 	if(NOT BEOS AND NOT HAIKU)
-		add_definitions(-Winline -Werror)
+		add_definitions(-Winline)
 		set(EXTRA_LIBRARIES "m")
 	endif()
 endif()