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Paul Eggleton 9b3e808624 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.

(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>

2017-01-20 11:53:49 +00:00

bitbake

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documentation

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README

Poky
====

Poky is an integration of various components to form a complete prepackaged
build system and development environment. It features support for building
customised embedded device style images. There are reference demo images
featuring a X11/Matchbox/GTK themed UI called Sato. The system supports
cross-architecture application development using QEMU emulation and a
standalone toolchain and SDK with IDE integration.

Additional information on the specifics of hardware that Poky supports
is available in README.hardware. Further hardware support can easily be added
in the form of layers which extend the systems capabilities in a modular way.

As an integration layer Poky consists of several upstream projects such as 
BitBake, OpenEmbedded-Core, Yocto documentation and various sources of information 
e.g. for the hardware support. Poky is in turn a component of the Yocto Project.

The Yocto Project has extensive documentation about the system including a 
reference manual which can be found at:
    http://yoctoproject.org/documentation

OpenEmbedded-Core is a layer containing the core metadata for current versions
of OpenEmbedded. It is distro-less (can build a functional image with
DISTRO = "nodistro") and contains only emulated machine support.

For information about OpenEmbedded, see the OpenEmbedded website:
    http://www.openembedded.org/

Where to Send Patches
=====================

As Poky is an integration repository (built using a tool called combo-layer),
patches against the various components should be sent to their respective
upstreams:

bitbake:
    Git repository: http://git.openembedded.org/bitbake/
    Mailing list: bitbake-devel@lists.openembedded.org

documentation:
    Git repository: http://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
    Mailing list: yocto@yoctoproject.org

meta-poky, meta-yocto-bsp:
    Git repository: http://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto(-bsp)
    Mailing list: poky@yoctoproject.org

Everything else should be sent to the OpenEmbedded Core mailing list.  If in
doubt, check the oe-core git repository for the content you intend to modify.
Before sending, be sure the patches apply cleanly to the current oe-core git
repository.

    Git repository: http://git.openembedded.org/openembedded-core/
    Mailing list: openembedded-core@lists.openembedded.org

Note: The scripts directory should be treated with extra care as it is a mix of
oe-core and poky-specific files.