# Tries to find the RTS include directory find_path( RTS_INCLUDE_DIR rts_glShaderProgram.h HINTS $ENV{RTS_PATH}) set (RTS_INCLUDE_DIRS ${RTS_INCLUDE_DIR}) file (GLOB RTS_SOURCE ${RTS_INCLUDE_DIR}/rts/source/*.cpp) FIND_PACKAGE_HANDLE_STANDARD_ARGS(RTS REQUIRED_VARS TRUE RTS_INCLUDE_DIR)