set(EXTERNAL_NAME oglplus) string(TOUPPER ${EXTERNAL_NAME} EXTERNAL_NAME_UPPER) include(ExternalProject) ExternalProject_Add( ${EXTERNAL_NAME} GIT_REPOSITORY https://github.com/matus-chochlik/oglplus.git GIT_TAG a2681383928b1166f176512cbe0f95e96fe68d08 CONFIGURE_COMMAND "" BUILD_COMMAND "" INSTALL_COMMAND "" LOG_DOWNLOAD 1 ) ExternalProject_Get_Property(${EXTERNAL_NAME} SOURCE_DIR) set(${EXTERNAL_NAME_UPPER}_INCLUDE_DIRS ${SOURCE_DIR}/include ${SOURCE_DIR}/implement CACHE TYPE INTERNAL)