[Buildroot] [PATCH v2] <pkg>-rsync: support user custom cmds

Arnout Vandecappelle arnout at mind.be
Wed Aug 21 16:41:06 UTC 2013

On 08/21/13 09:20, Tzu-Jung Lee wrote:
> On Wed, Aug 21, 2013 at 2:09 PM, Arnout Vandecappelle <arnout at mind.be> wrote:
>> On 08/20/13 20:14, Tzu-Jung Lee wrote:
>>> If we're considering efficiency for some cases, especially those have
>>> giant VCS
>>> database such as linux kernel, I think the combination of the two
>>> patches proposed
>>> already simple enough. They don't really add that much of complexity, I
>>> think.
>>>    1. Support customized RSYNC (this patch)
>>   Like Thomas, I really don't see the point of being able to choose cp
>> instead of rsync.
>>>    2. Allow each package add their post-rsync hook if they need.
>>   Adding the VCS stuff in a post-rsync-hook is really hackish.
>>   Instead, I think the rsync command should use $($(PKG)_RSYNC_OPTS), which
>> allows the user to specify additional --include options in the override.mk
>> file. The documentation of the override.mk file should also be updated to
>> explain this possibility.
> $($(PKG)_RSYNC_OPTS) alone only gives the choice to sync / cp them or not.
> In some cases we actually prefer to simply link the VCS stuff instead
> of copying it
> to the build directory, especially if the VCS of the package is very huge.
> Not only the time taken by rsyncing them from a possibly networked mounted
> file system, but also the additional storage space taken by the build.
> If we are building multiple rootfs images that are built with Linux
> kernel from local
> source. It takes a few GB additional space in the build directories.
> So $($(PKG)_RSYNC_OPTS) can be replace the 1) custom RSYNC cmd patch.
> But we still need rsync-post-hook or other less hacky alternatives.

  Yes, that sounds reasonable.


Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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