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()
@@ -190,11 +190,10 @@ INSTALL(DIRECTORY
 	${CMAKE_SOURCE_DIR}/graphics
 	${CMAKE_SOURCE_DIR}/music
 	${CMAKE_SOURCE_DIR}/sounds
-	DESTINATION ${INSTALL_PREFIX})
+	DESTINATION ${CDOGS_DATA_DIR})
 INSTALL(FILES
 	${CMAKE_SOURCE_DIR}/cdogs_icon.bmp
-	${CMAKE_SOURCE_DIR}/README.md
-	DESTINATION ${INSTALL_PREFIX})
+	DESTINATION ${CDOGS_DATA_DIR})
 IF(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
 	INSTALL(FILES ${CMAKE_SOURCE_DIR}/build/linux/cdogs-sdl.desktop DESTINATION ${INSTALL_PREFIX}/share/applications)
 	INSTALL(FILES ${CMAKE_SOURCE_DIR}/build/linux/cdogs-sdl.appdata.xml DESTINATION ${INSTALL_PREFIX}/share/appdata)