Re: [Xen-devel] Xen compilation fails for ARM32 when recompiled on a ARM64 build

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 24.11.16 at 16:58, <julien.grall@xxxxxxx> wrote:
> On 24/11/16 15:53, Andrew Cooper wrote:
>> On 24/11/16 15:48, Bhupinder Thakur wrote:
>>> If I manually remove the following files and recompile then
>>> compilation is successful:
>>>
>>> Remove xen/arch/arm/asm-offsets.s
>>> Remove xen/arch/arm/xen.lds
>>>
>>> The same issue happens if you build for ARM32 first and then try to
>>> build for ARM64. After removing the 2 files manually, the compilation
>>> is successful.
>>>
>>> I am using the following toolchains:
>>> gcc-linaro-4.9-2014.11-x86_64_aarch64-linux-gnu.tar.xz (for ARM64 build)
>>> x86_64-gcc-4.9.0-nolibc_arm-unknown-linux-gnueabi.tar.xz (for ARM32
>>> build -
>>> https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.9.0/)
>>>
>>> I think probably the above-mentioned two files need to be removed
>>> automatically when make distclean is run.
>>
>> They should be deleted on `make clean`.  They are temporary files just
>> like .o's
> 
> It will only happen if you do make clean XEN_TARGET_ARCH=arm64/arm32.
> 
> This is because target clean/distclean is only called for a given 
> architecture (by the default the host one).
> 
> I am not sure whether we should clean for any architecture.

I think it would be nice if "clean" affected the whole tree, but for
now I think those who really can't afford separate build trees
will need to live with having to pass XEN_TARGET_ARCH= on
the clean invocation.

Jan


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