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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. (From OE-Core rev: e10a973cd9390eacb13bdb99693a0622bd3695f5) Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> [RP: Add needed mkdirhier call] Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>