2010/10/21 Michael Hampicke <gentoo-u...@hadt.biz>: > >> May I just unmerge my old gcc ? >> Is it save ? > > Yes it's save to unmerge your old gcc. > You could also - using quickpkg - create a binary package of your old > gcc before unmerging (for backup puropses). >
>From the strictly Gentoo side of things, it's safe (following instructions already posted). However, for myself, I use tons of third party physics software, among other things. A lot of it is not very recent, and sometimes they are picky about which gcc compiles is (and sometimes I need a shell script to switch the gcc for execution of those programs and switch back afterward...joy!) So if you do a lot of compiling of external programs that are not as well maintained and updated, there's not a lot of reason to *unmerge* an old gcc. There are two reasons to actually remove gcc's in my opinion: revdep-rebuild wants to reinstall all of them, you need the disk space. I have 10 options under gcc-config. I'm not at all recommending this to everyone, but just making the point that, depending on what other things you have going on, it's a good idea to check any third party stuff, at the very least, before just removing it, since there's not much harm in keeping a few extra gccs around for rainy days. ~daid
