portage-ng --merge
>>> Emerging : portage://dev-cpp/glog-0.5.0:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-cpp/glog-0.5.0
│ └─ file ─┤ 179.05 Kb glog-0.5.0.tar.gz
└─step 2─┤ install portage://dev-cpp/glog-0.5.0
│ └─ conf ─┤ USE = "libunwind -gflags -llvm-libunwind -test"
└─step 3─┤ run portage://dev-cpp/glog-0.5.0
Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
179.05 Kb to be downloaded.