[Buildroot] [PATCH 2/2] pkg-generic: prepend downloaded patches w/ package

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Frank Hunleth,

On Tue, 21 Apr 2015 10:20:46 -0400, Frank Hunleth wrote:

> > There are obviously some implications (organization of files in
> > BR2_PRIMARY_SITE and on sources.buildroot.net), but isn't this the
> > easiest solution, after all? Or am I missing something?
> 
> Yes. This would be another route barring the new issue that I just ran
> into with _PATCH.
> 
> The issue occurs when Intel updates their kernel or u-boot patches
> without updating which kernel or u-boot that they use. The remote file
> name of the patches is still the same (upstream_to_edison.patch). The
> kernel or u-boot package versions are also still the same. So unless I
> append some additional versioning information to the filename stored
> in $(DL_DIR), the new patch won't be downloaded.

Indeed my proposal would not solve this problem.

Alternate options:

 1/ Fix upstream. Talk to the Intel people doing this sort of awful
    mess to fix their workflow and rename patches with appropriate
    versions.

 2/ Have a way of passing the expected hash for custom patches to
    download, so that the Buildroot download infra can notice that the
    hashes are not correct anymore, and will redownload.

    Maybe:

      BR2_TARGET_UBOOT_PATCH="http://intel.com/stupid.patch{md5:2394fc9ba9094f8e6d0a59490a1fa65e}"

    ?

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com