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From: Manuel Mommertz <2kmm@gmx.de>
To: Gentoo <gentoo-user@lists.gentoo.org>
Subject: Re: [gentoo-user] Unknown gcc-version needed by nvidia-cuda-toolkit?
Date: Sun, 08 Apr 2018 06:56:14 +0200
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Am Sonntag, 8. April 2018, 05:46:09 CEST schrieb tuxic@posteo.de:
> ...I think, that gcc-7.3.0 matches  <sys-devel/gcc-7[cxx]...

It needs gcc LESS than version 7. But you have all masked.

> But what is the 'c' in '[cxx]' for?

If the cxx useflag is active, gcc will have support to compile c++

Greets
Manuel