From: Andrew Cagney <cagney@redhat.com>
To: Mark Wielaard <mark@klomp.org>
Cc: frysk <frysk@sources.redhat.com>
Subject: Re: Add .jar-s instead of source directories to compile path.]
Date: Tue, 04 Dec 2007 15:00:00 -0000 [thread overview]
Message-ID: <47556B8D.80909@redhat.com> (raw)
In-Reply-To: <1196759124.3060.10.camel@dijkstra.wildebeest.org>
Mark Wielaard wrote:
> 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.
>
I forgot to mention, since it always does a full re-compile, the results
are more robust on >=f7 (where gcj's dependency mechanism is broken).
Andrew
>
>
prev parent reply other threads:[~2007-12-04 15:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-03 23:40 Andrew Cagney
2007-12-04 9:05 ` Mark Wielaard
2007-12-04 15:00 ` Andrew Cagney [this message]
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