[oe] The coreutils-native race...

[Tom Rini]

Hey all.  I thought I would try and explain what Chris has been up to
with at least some of the base.bbclass changes (the ones related to
md5sum and cp).

Right now, with a big enough BB_NUM_THREADS we can get into a race where
coreutils-native is installing programs and elsewhere we are in a
do_fetch and either trying to use 'cp' or 'md5sum', and blam, we try and
invoke the program while it's being installed (and see things like
sh: /path/to/staging/i686-linux/usr/bin/cp: Textfile is busy).

There's a few ways out of this:
1) Don't rely on 'cp' and 'md5sum' anymore but use python for it.
2) Make an oe_cp and oe_md5sum to go with oe_sha256sum
3) IIRC, the big part of coreutils-native was a fully functional,
always, 'install'.  We could just copy the install we build or provide
an install wrapper (oe_install) or so
4) ???

Thoughts? Comments?

-- 
Tom Rini <tom_rini at mentor.com>
Mentor Graphics Corporation