quickly build a single program ?

[Luigi Rizzo]

On Sat, Jan 24, 2009 at 05:26:33AM +0200, Giorgos Keramidas wrote:
> On Sat, 24 Jan 2009 00:36:11 +0100, Luigi Rizzo <rizzo at iet.unipi.it> wrote:
> > how hard would it be to modify the build scripts so that they only try
> > to rebuild a single program from a tree where you already made a buildworld ?
> >
> > i usually do modifications to a single program at a time and it is
> > slightly annoying to wait for the build process to scan through all
> > the already-built programs to find there is nothing to do for them.
> 
> Most of the time, when there are small changes I just change into the
> program's directory and `make'.   But this doesn't work when there are
> dependencies with other parts of buildworld.

... or when you work on a different tree than the one installed,
unless there is an easy way to set the environment variables
to point to the correct toolchain and headers/libraries ?
Maybe that's all i need in the end.

cheers
luigi