gcc upgrade

[AdiosKid]

hi folks, 

 

I'm in new installation and I'm follow that guide about upgrade gcc : https://wiki.gentoo.org/wiki/Upgrading_GCC 

 

the commands  : 

 

 

Install new version of compiler

emerge -u sys-devel/gcc

show the versions

gcc-config -l

choose the new version

gcc-config 2

reinstall libtool 

emerge --ask --oneshot sys-devel/libtool

remove the old version

emerge --ask --depclean =sys-devel/gcc-4.9.3

until here all fine and perfect, but my doubt is about recompile the toolchain, I need just recompile the depedencies with 

revdep-rebuild --library 'libstdc++.so.6' -- --exclude gcc

or I need recompile the whole system three ? 

[Oleg Vinichenko]

yes, you need revdep-rebuild command.

[AdiosKid]

then I don't need recompile all system again just the package that use g++ ?

[hencb]

No, you need both emerge -e @system --exclude gcc and revdep-rebuild. You can see the full instructions in the News announcement that Oleg Vinichenko wrote: http://www.funtoo.org/News:GCC_Update