include(ExternalProject RESULT_VARIABLE GOO) set_property(DIRECTORY PROPERTY EP_INDEPENDENT_STEP_TARGETS download patch update configure build) ExternalProject_Add(FOO URL https://example.org/foo.tar.gz) ExternalProject_Add(BAR URL https://example.org/bar.tar.gz TEST_COMMAND echo test INDEPENDENT_STEP_TARGETS install) # This one should not give a warning ExternalProject_Add_Step(BAR bar COMMAND echo bar) ExternalProject_Add_StepTargets(BAR NO_DEPENDS test bar)