On 02/19/2012 08:20 PM, meino.cra...@gmx.de wrote: > Hi, > > I want to downgrade gcc from 4.5.3-r1 to 4.4.5. > > The Gentoo gcc UPgrade guide tells me, that ABI are only upward > compatible which implies problems when downgrading and not upgrading. > > Nonetheless a downgrade is needed here and I want to go > to gcc-4.4.5. >
As the others have already said, gcc-config is the way to switch between gcc versions. In theory, every time you switch between different gcc's you *should* run 'fix_libtool_files.sh <old-gcc-version-number>' *and* recompile every package that links to libstdc++ (because libstdc++ is part of the gcc package and gcc-config switches versions of libstdc++). I suspect most people don't actually do those things, however :) Just keep it in mind if any c++ applications start acting weird.
