Hi,

Whilst working on the Reproducible Builds effort [0], we noticed that
cctools could not be built reproducibly.

This is because the config.mk file included the current build time (as
well as the current build path).

Patch attached that modifies this file after its generation. However,
you may wish to consider the utility of shipping this file: said
paths, after all, did not resolve at all on user's systems prior to
this point.

 [0] https://reproducible-builds.org/


Regards,