Fix nested MAKEOBJDIRPREFIX breaking various release/buildworld/toolchain targets.

This problem was caused by r325329 and r325350.

For the release(7) targets, some will run mm-mtree.sh which itself runs make
with a MAKEOBJDIRPREFIX.  The execution of that script leaks OBJROOT,
MAKEOBJDIR, and MAKELEVEL=1 in the environment.  This causes the mm-mtree makes
to not do some basic setup of OBJROOT and only use this special
MAKEOBJDIRPREFIX case which fails to empty out MAKEOBJDIRPREFIX for further
nested makes, such as a tree walk.  If that tree walk sets OBJROOT/OBJTOP such
as r325329 is doing, then the wrong OBJDIRs end up being used due to the
unemptied MAKEOBJDIRPREFIX being preferred over the proper MAKEOBJDIR.

Pointyhat to:	bdrewery
Sponsored by:	Dell EMC Isilon

0 files changed, 0 insertions, 0 deletions