#apt-get install pentium-builder
/usr/bin/builder-cc
/usr/bin/builder-c++
~/.bashrc
export DEBIAN_BUILDARCH=k8
export DEBIAN_BUILDGCCVER=3.4
DEBIAN_BUILDARCH
i586, i686, athlon, athlon-xp, prntium3, pentium4, k8 ...
DEBIAN_BUILDGCCVER
3.3, 3.4, 4.0 ...
gcc-3.4以降では
"/usr/bin/bulder-cc", "/usr/bin/builder-c++"
の"-mcpu"を"-mtune"に