GCC 4.1: Buildable on GHz machines only?

Thu May 5 06:48:00 GMT 2005

Per Bothner wrote:
> Mark Mitchell wrote:
>>>Building libjava takes forever on any platform, relative to the rest of 
>>the compiler build.

[...]
> 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.

[...]
> Ideally, there'd be a configure flag to control "chunking".

Note that libgcj already supports an "--enable-libgcj-multifile"
configuration option that coarsely attempts to do the above.
See:
 http://gcc.gnu.org/ml/java-patches/2003-q3/msg00658.html
Ranjit.
-- 
Ranjit Mathew Email: rmathew AT gmail DOT com
Bangalore, INDIA. Web: http://ranjitmathew.hostingzero.com/