Index: SFML-2.5.0/src/SFML/Window/CMakeLists.txt =================================================================== --- SFML-2.5.0/src/SFML/Window/CMakeLists.txt +++ SFML-2.5.0/src/SFML/Window/CMakeLists.txt 2018-05-15 16:01:29.137815145 +0200 @@ -260,6 +260,9 @@ target_link_libraries(sfml-window PRIVATE EGL GLES) endif() +if(SFML_OS_LINUX OR SFML_OS_FREEBSD OR SFML_OS_MACOSX) + target_link_libraries(sfml-window PRIVATE pthread) +endif() if(SFML_OS_LINUX) sfml_find_package(UDev INCLUDE "UDEV_INCLUDE_DIR" LINK "UDEV_LIBRARIES") target_link_libraries(sfml-window PRIVATE UDev)