---+ Gentoo Tips And Tricks ---++ Updating world Use: =emerge -a -u --deep --newuse world 2>&1 | tee emerge-world.txt= Check the messages at the end of emerge-world.txt, to see if you need to reconfigure your system after packages have been upgraded. To make sure you did not break any library dependencies. Run =revdep-rebuild= after a world upgrade. ---++ Cleaning old packages after updating world After updating world, remove old or unneeded packages using: =emerge -a --depclean=. After this, you need to check the dependencies of all installed packages using: =revdep-rebuild=. ---++ Overriding environment settings For some packages, you may need to override environment settings from make.conf. Do this by creating a file called: * /etc/portage/env/[category]/[package] or * /etc/portage/env/[category]/[package]-[version] For example: /etc/portage/env/sys-devel/gcc-4.2.4 <verbatim> export CFLAGS="-O2 -march=athlon64 -pipe" export CXXFLAGS="${CFLAGS}" </verbatim> -- %USERSIG{IvoVanGeel - 27 Feb 2011}%
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