--- CMakeLists.txt.orig	2021-12-29 06:46:09 UTC
+++ CMakeLists.txt
@@ -23,9 +23,10 @@ endif()
 set(SDL2_BUILDING_LIBRARY ON)
 
 find_package(SDL2 REQUIRED)
+find_package(X11 REQUIRED)
 FIND_PACKAGE(SDL2_mixer REQUIRED)
 
-include_directories(${SDL2_INCLUDE_DIR} ${SDL2_MIXER_INCLUDE_DIR})
+include_directories(${SDL2_INCLUDE_DIR} ${SDL2_MIXER_INCLUDE_DIR} ${X11_INCLUDE_DIR})
 get_property(dirs DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
 foreach(dir ${dirs})
   message(STATUS "Include dir='${dir}'")
@@ -199,7 +200,7 @@ if(${CMAKE_VERSION} VERSION_GREATER "3.16.0" OR ${CMAK
             )
 endif()
 
-target_link_libraries(SpaceCadetPinball ${SDL2_LIBRARY} ${SDL2_MIXER_LIBRARY})
+target_link_libraries(SpaceCadetPinball ${SDL2_LIBRARY} ${SDL2_MIXER_LIBRARY} ${X11_LIBRARIES})
 
 # On Windows, copy DLL to output
 if(WIN32)
@@ -221,8 +222,8 @@ endif()
 if(UNIX AND NOT APPLE)
 	include(GNUInstallDirs)
 	install(TARGETS "${PROJECT_NAME}" RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
-	install(FILES "/Platform/Linux/${PROJECT_NAME}.desktop" DESTINATION "share/applications")
-	install(FILES "/Platform/Linux/${PROJECT_NAME}.metainfo.xml" DESTINATION "share/metainfo")
+	install(FILES "Platform/Linux/${PROJECT_NAME}.desktop" DESTINATION "share/applications")
+	install(FILES "Platform/Linux/${PROJECT_NAME}.metainfo.xml" DESTINATION "share/metainfo")
 	foreach(S 16 32 48 128 192)
 		install(FILES "${PROJECT_NAME}/Icon_${S}x${S}.png" DESTINATION
 			"share/icons/hicolor/${S}x${S}/apps" RENAME "${PROJECT_NAME}.png")
