[CMake] Simultaneous makes?

[Chris Johnson]

Perhaps I need to clarify.

It's a very large project with many directories and interdependent
libraries.  So he is starting a make in one library, and then working on a
program in another subtree of the same project, and running a make there.

Since the entire project shares just one large build tree out-of-source,
both compiles share the same CMakeCache.txt and CMakeFiles/*.

This is not a case of "parallel" makes (-j N) started from one directory.

Thanks,
..chris

On Wed, Dec 24, 2014 at 10:22 AM, Rolf Eike Beer <eike at sf-mail.de> wrote:

> Am Mittwoch, 24. Dezember 2014, 10:17:07 schrieb Chris Johnson:
> > One of my co-workers likes to start multiple makes in various parts of
> his
> > project source tree.  Under our old Makefile-based, build-in-source
> system,
> > this worked fine. Under our new CMake-based, out-of-source build system,
> > this causes problems, since any make might cause CMake to rebuild its
> > internal files.
> >
> > Is this a "don't do that" problem, or can CMake be used in a manner where
> > it is smart enough not to step on its own toes?
>
> He should just use "make -j something".
>
> Eike
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