Recompile all packages and trigger on updates

Question

I am using Ubuntu on a bespoke router and after seeing the latency drops capable with custom compiling on Gentoo, I would like to recompile all packages with CFLAGS="-march=atom". The guide for this and a helpful forum thread demonstrate the recompilation steps:

export CFLAGS="-march=nocona"
export CXXFLAGS="-march=nocona"
apt-get build-dep packagename
apt-get -b source packagename
dpkg -i *.deb

Is it possible to automate a complete system recompilation instead of specifying one package at a time and to automatically recompile new package updates before they are installed?

Answer 1

Have a look at apt-build (not installed by default)