The fact that it would be related to swap is interesting because the
programs that dump core during a build are mostly sh's, and I suspect
they are the shells that get swapped out at some point in the build.
Similarly, a full build of xsrc builds and installs everything fine,
but the top-level "make" dies, and it most certainly got swapped out
during the build.

I will try without swap, thanks.

 Aymeric

"Simon Evans" <simon@codian.com> writes:

> [...] Disabling swap space
> stabilised things ... doing the same on the Mac also
> seemed to help.