FreeBSD-similar build-from-source Linux?

[O. Hartmann]

Hello out there,

well, my question may sound heretic, but since we use mostly Linux based 
systems in our scientific environment and FreeBSD seems to lack in 
severe support in GPGPU/CUDA capable graphics boards I need to setup a 
kind of Linux facility to ensure having the software and tools I need 
for my work. I'm looking for a Linux distribution that is similar 
handled like FreeBSD, where I'm able to rebuild the whole system from 
sources, not even the the Linux kernel, also the GNU tools and the 
packages. Maybe there are some people out here having already taken this 
step.
Any suggestion is appreciated,

thanks in advance,

Oliver