emerge -pqv '=sys-devel/gcc-6.4.0-r1::gentoo'

emerge-pqv-gcc.txt (text/plain), 280 bytes, created by Mauro Maroni on 2018-01-14 18:19:20 UTC

[ebuild     U ] sys-devel/gcc-6.4.0-r1 [6.4.0] USE="cxx fortran (multilib) nls nptl openmp pch (pie) sanitize ssp vtv (-altivec) (-awt) -cilk -debug -doc (-fixed-point) (-gcj) -go -graphite (-hardened) (-jit) (-libssp) -mpx -objc -objc++ -objc-gc -pgo -regression-test -vanilla"