CMake config file: set SameMajorVersion compatibility

src/CMakeLists.txt

@@ -131,6 +131,7 @@ ecm_setup_version(${KDEGAMES_VERSION}
     VARIABLE_PREFIX KDEGAMES
     VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/kdegames_version.h"
     PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KF5KDEGamesConfigVersion.cmake"
+    COMPATIBILITY SameMajorVersion
     SOVERSION ${KDEGAMES_SOVERSION}
 )