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Re: Using -MMD instead of -MD for depndency generation

From: Holger Freyther
Subject: Re: Using -MMD instead of -MD for depndency generation
Date: Wed, 27 Oct 2010 23:33:32 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100921 Fedora/3.1.4-1.fc14 Lightning/1.0b2 Thunderbird/3.1.4

On 10/27/2010 10:25 PM, Paul Smith wrote:
> On Wed, 2010-10-27 at 20:51 +0200, Ralf Wildenhues wrote:

> But I do have libgstreamer dev packages installed:
>         webkit-1.3.5$ locate gst.h
>         /usr/include/gstreamer-0.10/gst/gst.h

hmm. Could you check the config.log if video was enabled? Maybe the configure
decided that video was disabled but we still build that file...

> Do I need to do something else?

Well, the problem is more with the .Po and .Plo files. If half the files
contain '#dummy' it will probably still be a lot faster, if all of them
contain the dependencies it will be a lot slower (at least for me).

> FWIW, I have a Intel Core2 6600 at 2.4GHz with 2G RAM, running 64bit
> 2.6.35+ kernel on an ext4 partition.

My desktop is still in a container on some boat and I am stuck with my lower
end laptop.

Is there anything I can help with? bisect GNU make 3.81 -> 3.82 to see when it
got slower? Or anything on our GNU make/automake usage? E.g. we use a non
recursive makefile

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