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Subject: Re: Add .jar-s instead of source directories to compile path.]
From: Mark Wielaard <mark@klomp.org>
To: Andrew Cagney <cagney@redhat.com>
Cc: frysk <frysk@sources.redhat.com>
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Date: Tue, 04 Dec 2007 09:05:00 -0000
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Hi Andrew,

On Mon, 2007-12-03 at 18:40 -0500, Andrew Cagney wrote:
> This tweaks the way the compiler is run so that it is forced to look in 
> .jars for pre-compiled .class files (and not accidently re-compile a 
> .java file).  (tks to tromey for figuring out the problem).
> 
> With this in place, I'm able to built frysk on f8 with the 
> --enable-jar-compile option.  That option enables the "faster" sequence 
> .java->.class->.jar->.o vs the slower .java->.o path.  Going forward 
> this option is likely to be made the default.

Seems nice. time (../frysk/autogen.sh --enable-jar-compile && make -j4)
(x86_64, fedora 8, dual core 3.2Ghz) now takes:

real    7m57.600s
user    8m16.352s
sys     2m8.085s

That is almost half the time it takes without --enable-jar-compile.

Cheers,

Mark