# Get the entt header libraries. include(FetchContent) FetchContent_Declare( entt GIT_REPOSITORY https://github.com/skypjack/entt.git GIT_TAG v3.10.3 ) FetchContent_MakeAvailable(entt) message("Downloaded entt library to: ${entt_SOURCE_DIR}") set(ENTT_INCLUDE_DIR ${entt_SOURCE_DIR}/src)