[Buildroot] [Bug 2707] New: Can't compile linux kernel using buildroot + crosstool-ng

[Buildroot] [Bug 2707] New: Can't compile linux kernel using buildroot + crosstool-ng

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=2707

           Summary: Can't compile linux kernel using buildroot +
                    crosstool-ng
           Product: buildroot
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: phil at philpep.org
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0


Created attachment 2605
  --> https://bugs.busybox.net/attachment.cgi?id=2605
fix missing include of kernel-headers when using crosstool-ng toolchain

linux/linux.mk need KERNEL_ARCH defined in
toolchain/kernel-headers/kernel-headers.mk included usually by toolchain
makefiles, crosstool-ng don't causing an error when we compile the linux
kernel.

Fix attached.

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[Buildroot] [Bug 2707] Can't compile linux kernel using buildroot + crosstool-ng

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=2707

Yann E. MORIN <yann.morin.1998@anciens.enib.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yann.morin.1998 at anciens.eni
                   |                            |b.fr

--- Comment #1 from Yann E. MORIN <yann.morin.1998@anciens.enib.fr>  ---
Philippe, All,

I believe the correct way would be to declare KERNEL_ARCH somewhere else.

First, the crosstool-NG backend does not need stuff from kernel-headers.mk, so
there is no reason to include it.

Second, KERNEL_ARCH is not specific to the kernel-headers used to build the
toolchain, even the internal toolchain backend. Indeed, it is used by a few
other components: the kernel itself, but also U-Boot, barebox, linux-fusion,
ltrace, lm-sensors, pciutils, and bizarely enough, busybox.

That's why I believe KERNEL_ARCH should be moved out of kernel-headers, and to
a common place.

Regards,
Yann E. MORIN.

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[Buildroot] [Bug 2707] Can't compile linux kernel using buildroot + crosstool-ng

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=2707

Peter Korsgaard <jacmet@uclibc.org> changed:

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

--- Comment #2 from Peter Korsgaard <jacmet@uclibc.org>  ---
Fixed by moving KERNEL_ARCH to the toplevel Makefile, thanks.

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