Re: [Qemu-devel] [Qemu-trivial] [PATCH 2/2] Makefile: use full path for qapi-generated directory

[Stefano Stabellini]

On Wed, 30 Nov 2011, Stefan Weil wrote:
> It's common to use either out-of-tree builds or in-tree builds,
> but not to mix both variants with a common root directory.
> I think QEMU should explicitly forbid that mixed scenario (like
> other projects do).
> 
> Even with your fix there can remain problems with generated
> header files.

Really? Can you provide more specific details?

> The mixed scenario creates unnecessary complexity.
> Without the mixed scenario, your patch is not needed.

I agree that supporting the mixed scenario shouldn't be a priority.
However without this last patch a "make clean" on the main tree is not
enough to allow out of tree builds.

Try the following scenario:

- cd qemu; ./configure; make

- make clean

- cd ../temp; ./configure --source-path=../qemu; make

this has to work, right? It does not without the patch to fix the
generation of config-devices.mak.