devtool: fix source extraction to work with recipe specific sysroots
When extracting source for a recipe within devtool (for extract, modify
or upgrade) We need to redirect WORKDIR, STAMPS_DIR etc. under a
temporary directory so that:
(a) we pick up all files that get unpacked to the WORKDIR, and
(b) we don't disturb the existing build
However, with recipe-specific sysroots the sysroots for the recipe will
be prepared under WORKDIR, and if we used the system temporary directory
i.e. usually /tmp) as used by mkdtemp by default, then our attempts to
hardlink files into the recipe-specific sysroots will fail on systems
where /tmp is a different filesystem, and we'd have to fall back to
copying the files which is a waste of time. Put the temp directory under
the WORKDIR to prevent that from being a problem.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
[RP: Add needed mkdirhier call] Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
