[Buildroot] [Bug 3391] New: Add support for specifying an external kernel tree

[Buildroot] [Bug 3391] New: Add support for specifying an external kernel tree

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3391

           Summary: Add support for specifying an external kernel tree
           Product: buildroot
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: mort at bork.org
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0


Created attachment 3079
  --> https://bugs.busybox.net/attachment.cgi?id=3079
external kernel tree patch

I didn't get any comments from the list, so I'm posting this here so I doesn't
get lost.  One thing that I changed from my original post is to conditionally
create
the .stamp_{downloaded,extracted,patched} files.  Doing do unconditionally
causes unnecessary invocation of make in the kernel directory during each
rebuild.

From my RFC e-mail to the buildroot list:

I wanted to compile a kernel from an external git tree, so adding
support for using this tree as the kernel source for buildroot
seemed logical.

The thing I'm seeking comments on is my short-circuiting of
the .stamp_{downloaded,extraced,patched} bits.  Can someone
suggest a more elegant way of doing this?

..I removed patching support, since you should probably be using
some other tool to manage patches in the external tree anyways.

Comments appreciated

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[Buildroot] [Bug 3391] Add support for specifying an external kernel tree

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3391

--- Comment #1 from Will Wagner <will_wagner@carallon.com>  ---
Martin,

I have used this a bit and it seems fine. One addition I have hacked in is an
option to allow the output files to reside in the buildroot output folder using
the O= option to kernel make.

This allows me to have a directory containing the kernel source which does not
get modified by a build and then the build files go into
$(O)/build/linux-custom. If you are interested I could probably clean up my
patch and submit.

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[Buildroot] [Bug 3391] Add support for specifying an external kernel tree

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3391

--- Comment #2 from Martin Hicks <mort@bork.org>  ---

> 
> I have used this a bit and it seems fine. One addition I have hacked in is an
> option to allow the output files to reside in the buildroot output folder using
> the O= option to kernel make.

Yeah, good idea.  If you send me a patch I'll wrap it up as one patch for Peter
and repost to bugzilla.

Thanks,
mh

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[Buildroot] [Bug 3391] Add support for specifying an external kernel tree

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3391

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at buildroot.uclibc |thomas.petazzoni at free-elect
                   |.org                        |rons.com

--- Comment #3 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com>  ---
This bug will be fixed by the for-2011.11/pkg-infra branch which I have posted
to the list.

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[Buildroot] [Bug 3391] Add support for specifying an external kernel tree

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=3391

Peter Korsgaard <jacmet@uclibc.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #4 from Peter Korsgaard <jacmet@uclibc.org>  ---
Fixed in git by Thomas/David (2690e76aa2)

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