In this video you can see sanos building itself. First it boots in the QEMU emulator.
more /proc/info command shows that the sanos kernel has been built using
the Microsoft C compiler (MSVC). The source code for Sanos is located in
/usr/src and this directory contains the master makefile for sanos.
make install command builds all the sanos components:
After the all the components have been built, sanos is rebooted, and you can now see that the new kernel has been built using the Sanos C compiler (TCC).