>>> Emerging : portage://sci-mathematics/gmp-ecm-7.0.6-r1:run?{[]}

These are the packages that would be merged, in order:

Calculating dependencies... done!

 └─step  1─┤ download  portage://sci-mathematics/gmp-ecm-7.0.6-r1
             │           └─ file ─┤ 948.88 Kb  	 ecm-7.0.6.tar.gz

 └─step  2─┤ install   portage://sci-mathematics/gmp-ecm-7.0.6-r1
             │           └─ conf ─┤ USE = "openmp custom-tune"
             │                    │ CPU_FLAGS_X86 = "sse2*"

 └─step  3─┤ run     portage://sci-mathematics/gmp-ecm-7.0.6-r1

Total: 3 actions (1 download, 1 install, 1 run), grouped into 3 steps.
       948.88 Kb to be downloaded.