241653a01b
Unfortunately whilst rerunning configure and make against a project will mostly
work there are situations where it does not correctly do the right thing.
In particular, eglibc and gcc will fail out with errors where settings
do not match a previously built configuration. It could be argued they are
broken but the situation is what it is. There is the possibility of more subtle
errors too.
This patch adds removal of the build directory (${B}) when configure is
rerunning, the sstate checksum for do_configure has changed and ${S} != ${B}.
We could simply use a stamp but saving out the previous configuration checksum
adds some data at no real overhead.
If we find there are things where we want to disable this behaviour with
CONFIGURESTAMPFILE = "" in the recipe, or users could disable it globally.
[YOCTO #2774]
[YOCTO #2848]
This is particularly helpful for eglibc and gcc which use split builds by default and
are a particular source of reconfigure type problems.
(From OE-Core rev: f15f61af77cc4e52a037f509f8e49e1ea530cf35)
(From OE-Core rev: 14fc04e480aaf1cb5cd9d3a04a5b38d2fda115b1)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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/community/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 = "") and contains only emulated machine support.
For information about OpenEmbedded, see the OpenEmbedded website: http://www.openembedded.org/