> On 6/7/06, Roy Wright <[EMAIL PROTECTED]> wrote: > > You might want to read: > > > > http://forums.gentoo.org/viewtopic.php?t=282474&highlight= > > > > which basically recommends: > > > > emerge -s > > emerge -s > > emerge -e > > emerge -e > > > Ugh, this is completely pointless. A single "emerge -e world" is > sufficient. >
Depends on what you consider sufficient. Although what the page recommends was misquoted, it actually suggests: emerge -e system emerge -e system emerge -e world emerge -e world That's probably is a little bit excessive, but the reason for doing the two emerge -e systems is so that the new tool chain is built with the new tool chain. At the end of the first emerge -e system you may have a new compiler, but that new compiler was built with the old compiler. What you actually want is a gcc-4.1.1 that was built with gcc-4.1.1. You could emerge the compiler twice before doing the emerge -e system, but the the emerges that happen before glibc is rebuilt are linked against a glibc that was built with the old compiler. Same with the rest of the tool chain and libraries. That being said "emerge -e system" is probably overkill just for a new toolchain. Updating a subset of all possible toolchain related things and then following that by a single emerge -e world would probably be sufficient for most people. This page: http://forums.gentoo.org/viewtopic-t-345229.html is about doing an install, but it shows how to update a subset of the entire tool chain. Note that the article does in the end, do a double emerge -e system, so the the value of updating a toolchain subset is questionable for the article's purposes. In short: emerge gcc-config glibc binutils libstdc++-v3 gcc emerge gcc-config glibc binutils libstdc++-v3 gcc emerge -e world To be clear, in order to make sure absolutely everything is updated and the libraries that are linked against are also updated prior to use, the two emerge -e system commands, are the definitive solution. For those who don't want to spend many extra hours of compile time, in order to gain a 0.5% increase in performance, the above is offered for consideration. Regards, Bob Young -- gentoo-user@gentoo.org mailing list
