How to specify the build output directory?

[Volker Simonis]

Hi,

I've just started to play around with Graal but I couldn't find a way
to specify a build output directory to the mx  tool.

While I personally don't like to clobber my source directory with
unknown build artifacts (and I think it is good practice not to do
so), not having the possibility to specify an arbitrary output
directory also implies practical problems. The most important is that
it seems to me that it is not possible to build Graal for two
platforms from the same repository because the output will be mixed
(and the settings in mx/env will be shared).

For me, building the same repository on different platforms seems an
essential feature. Otherwise I'll always have to mess with
transplanting changesets back and forth to ensure the changes for one
platform don't break another one.

So to cut a long story short - is there a possibility with the current
Graal build tools to redirect all the build output to a configurable
directory? And if not, are there any plans to provide such a feature?
Or am I missing something here?

Thank you and best regards,
Volker