On 06/02/2011 08:11 PM, wenzong fan wrote:
Hi Folks,
Please help me to review the design document for ccache-native, and
I also have two questions about it, any answers or suggestions are
appreciated.
* Feature name: ccache-native
Priority: P3; M2
Owner: Wenzong Fan
Summary: Integrate ccache-native to yocto
* Description:
Bitbake supports the 'CCACHE Mechanism', but 'ccache' hasn't been
included by poky/yocto, just add it as a native tool.
* Usage:
Build ccache as a native tool by default and enable it for speeding
target packages build.
* Implementation:
1) Copy bb file from OE upstream to:
meta/recipes-devtools/ccache/
2) Update bb file to get the latest ccache_3.1.5 and split the single
bb file to:
'ccache_3.1.5.bb', 'ccache.inc'
3) Enable ccache in the native tools building.
You will need to have it be a dependency pretty early on in the build.
Additionally, this is a bit a new part to this task, we want to have the
default CCACHE_DIR for the build default to a directory in TMPDIR
instead of the user's home directory. This will mean setting an
environment variable somewhere early also.
* Questions:
1) Do we want to add it as a target package? And which images should
include it?
Yes, it should be included as part of any SDK image, to do this you
would add it to the task-core-sdk list.
2) How to add it into native tools build list and build it by default?
You use BBCLASSEXTEND = "native" in the recipe, that will give you the
native for free.
Thanks
Wenzong
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