Fast rebuild of bootfiles after change in the compiler

[gus-massa]

After making some changes in the compiler, I'm rebuilding Chez Scheme using

cd ChezScheme
make build

It downloads the pb bootfiles and then compile the compiler using them and then compile the compiler again with the new bootfiles. The problem is that the pb are slower and the code is compiled twice.

I remember that a long time ago after the first build it was possible to reuse the bootfiles and build the compiler only once. But I lost the script with the trick and the change to zuo probably broke it anyway.

Is it possible (and easy) to do this (reuse the bootfiles and build the compiler only once)? (At least until I make an horrible mistake and I have to restart from a clean directory again.)

[mflatt]

If you have built before, then ./configure --force will skip the pb part and use the most recent build for the current target machine.