GCC 4.1: Buildable on GHz machines only?

[David Daney]

Per Bothner wrote:
> 
> One way to speed up libcgj compilation by quite a bit would be to
> compile more than one .java file at a time.  For example:
>   gcj -c java/util/*.java -o java-util.o
> This reduces libtool overhead, reduces the duplication in reading
> dependencies, and probably reduces link overheads.  It can also
> produce better code, since intermodule references get trurned into
> intramodule references.  This just requires Makefile-hacking.

I was going to recommend the same thing.

We have taken this approach with a fairly large program (about 1000 
classes) and it does speed things up considerably.  We see a 75% 
reduction in total build times (12 minutes vs 48).

David Daney