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Re: -jN using cl.exe and not gcc

From: J. Grant
Subject: Re: -jN using cl.exe and not gcc
Date: Fri, 25 Jun 2004 23:06:45 +0100
User-agent: Mozilla/5.0 (X11; U; GNU/Linux i686; en; rv:1.0.0; hi)

Hi Sandy,

But, to run multiple instances of cl.exe at the same time (-jN),
one needs to create individual secondary files (in unique places)
to keep multiple cl.exe processes from stepping on themselves.
But doing so appears to be a bad thing since there are now
multiple instances of these files with partial (project) data in
them as opposed to a single instance of the file.

The pch file could be created once at the beginning of your Makefile for
the build.  If you need pdb complete I do not know of a way of using
multiple cl.exe on individual files in a project.

Does anyone on this list have any experience trying to parallel-ize
windows compiles using cl.exe?

If your software is modular it may already consist of libraries, in
which case you could compile more than one library in a sub-directory at
a time which would have a similar time saving if you have mutiple CPU
etc.  You could call also cl.exe with multiple source files at a time,
which is a little quicker in my experience.

Any advice/thoughts/prior art?  Best practice?

Use gcc?  You could just use a gcc port with
native win32 support.



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