[PATCH] enabling gprof for cross builds

[Ben Elliston]

> Does that caveat mean that a configure test (involving the build
> compiler's capability and the pointer size of the target) should be
> used to determine whether to build gprof?  I hear that this might be
> overkill.

You should certainly make sure that users aren't tripped up by any
caveats (either at build time, or runtime, if you prefer).  Don't
allow the cross-gprof to produce erroneous results.

Thanks for doing this!

Ben