From: Jeff Law <law@redhat.com>
To: Tom Tromey <tromey@redhat.com>
Cc: Diego Novillo <dnovillo@google.com>,
Ian Lance Taylor <iant@google.com>,
Andrew Haley <aph@redhat.com>,
gcc@gcc.gnu.org, java@gcc.gnu.org,
gcc-patches@gcc.gnu.org, java-patches@gcc.gnu.org
Subject: Re: PATCH RFA: Do not build java by default
Date: Tue, 02 Nov 2010 16:25:00 -0000 [thread overview]
Message-ID: <4CD03B55.6080508@redhat.com> (raw)
In-Reply-To: <m3lj5b7n7c.fsf@fleche.redhat.com>
On 11/02/10 09:35, Tom Tromey wrote:
>>>>>> "Jeff" == Jeff Law<law@redhat.com> writes:
> Jeff> Building libjava (at least for me) is primarily painful due to 2 files
> Jeff> (the names escape me) and the rather poor coarse level parallelism
> Jeff> (can't build the 32bit and 64bit multilibs in parallel for example).
>
> Jeff> Has anyone looked at fixing the build machinery for libjava to make it
> Jeff> more sensible?
>
> Nope. AFAIK it is already as parallelized as possible, but it has been
> a while since I looked at it.
>
> I thought the really bad file (HTML_401F.java, IIRC) had some functions
> split up so that it wasn't so evil any more.
It's the libgcj_tools_la-tools which gets built twice for each
architecture and its build seems to always fire off last and takes a few
minutes for each compilation.
> The multilib thing sounds like a top-level problem of some kind.
> At least, I don't recall that libjava does anything special here.
Yea, I suspect the way multilibs are handled is far from ideal from a
parallel make standpoint. Fixing the underlying multilib goop may be
ugly, but probably would have a nice benefit across the various runtime
libraries we utilize.
jeff
next prev parent reply other threads:[~2010-11-02 16:25 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-31 19:09 Ian Lance Taylor
2010-11-01 8:59 ` Andrew Haley
2010-11-02 10:14 ` Laurent GUERBY
2010-11-02 15:32 ` Tom Tromey
2010-11-01 10:31 ` Dave Korn
2010-11-01 17:36 ` Ian Lance Taylor
2010-11-01 18:16 ` Diego Novillo
2010-11-01 18:58 ` Andrew Haley
2010-11-01 19:35 ` H.J. Lu
2010-11-02 3:39 ` Jeff Law
2010-11-02 3:58 ` H.J. Lu
2010-11-02 8:22 ` Eric Botcazou
2010-11-02 15:31 ` Tom Tromey
2010-11-02 16:25 ` Jeff Law [this message]
2010-11-02 5:12 ` Matthias Klose
2010-11-11 23:20 ` Ian Lance Taylor
2010-11-18 9:23 ` Mark Mitchell
2010-11-18 10:47 ` Andrew Haley
2010-11-18 13:42 ` H.J. Lu
2010-11-18 15:37 ` Mark Mitchell
2010-11-18 16:02 ` Diego Novillo
2010-11-18 15:23 ` Jeff Law
2010-11-18 17:19 ` Ian Lance Taylor
2010-11-18 17:58 ` Dave Korn
2010-11-18 20:53 ` Mark Wielaard
2010-10-31 19:33 Steven Bosscher
2010-10-31 19:47 ` Gerald Pfeifer
2010-11-01 3:48 ` Andrew Pinski
2010-11-01 10:11 ` Dave Korn
2010-11-01 4:06 ` Geert Bosch
2010-11-01 4:30 ` Joern Rennecke
2010-11-01 10:35 ` Geert Bosch
2010-11-01 10:46 ` Joern Rennecke
2010-11-02 10:48 ` Paolo Bonzini
2010-11-02 16:43 ` David Daney
2010-11-01 17:46 ` Tom Tromey
2010-11-01 17:50 ` Andrew Haley
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