allowing ctest with ENABLE_THREADS=OFF
allowing ctest with ENABLE_THREADS=OFF

yangf4/core,YetAnotherMinion/core,YetAnotherMinion/core,yangf4/core,yangf4/core,yangf4/core,YetAnotherMinion/core,YetAnotherMinion/core,YetAnotherMinion/core,yangf4/core