Hi, while doing the update of my system I got this:
Calculating dependencies... done! * Dependencies could not be completely resolved due to * the following required packages not being installed: * * <sys-devel/gcc-7[cxx] pulled in by: * dev-util/nvidia-cuda-toolkit-9.1.85 Installed is this: [I] sys-devel/gcc Available versions: (2.95.3) [M]~*2.95.3-r10^s (3.3.6) [M](~)3.3.6-r1^s (3.4.6) [M]3.4.6-r2^s (4.0.4) [M]**4.0.4^s (4.1.2) [M]4.1.2^s (4.2.4) [M](~)4.2.4-r1^s (4.3.6) [M]4.3.6-r1^s (4.4.7) [M]4.4.7^s (4.5.4) [M]4.5.4^s (4.6.4) [M]4.6.4^s (4.7.4) [M]4.7.4-r1^s (4.8.5) [M]4.8.5-r1^s (4.9.4) [M]4.9.4^s (5.4.0) [M]5.4.0-r4^s (6.4.0) [m]6.4.0^s [m]6.4.0-r1^s (7.2.0) (~)7.2.0^s (~)7.2.0-r1^s (7.3.0) (~)7.3.0^s **7.3.0-r1^s {altivec awt boundschecking cilk +cxx d debug doc fixed-point +fortran gcj go graphite hardened jit libssp mpx mudflap multilib +nls nopie nossp +nptl objc objc++ objc-gc +openmp +pch pgo +pie regression-test +sanitize +ssp vanilla +vtv} Installed versions: 7.3.0(7.3.0)^s(11:19:06 PM 02/02/2018)(cxx fortran nls nptl openmp pch pie sanitize ssp vtv -altivec -awt -cilk -debug -doc -fixed-point -gcj -go -graphite -hardened -jit -libssp -mpx -multilib -objc -objc++ -objc-gc -pgo -regression-test -vanilla) Homepage: https://gcc.gnu.org/ Description: The GNU Compiler Collection [I] sys-devel/gcc-config Available versions: 1.8-r1 (~)1.9.0-r1 (~)1.9.1 **9999 Installed versions: 1.9.1(02:25:19 AM 12/17/2017) Homepage: https://gitweb.gentoo.org/proj/gcc-config.git/ Description: Utility to manage compilers Found 2 matches ...I think, that gcc-7.3.0 matches <sys-devel/gcc-7[cxx]... But what is the 'c' in '[cxx]' for? And why is the installation of the gcc not recognized as espected? Cheers Meino