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

[Julien Grall <julien.grall@xxxxxxx>]

On 24/11/16 15:48, Bhupinder Thakur wrote:
> Hi,
Hello Bhupinder,

> I am facing an issue where the recompilation fails when you build for
> ARM32 architecture on an existing build of ARM64.
>
> Even if I do make clean/make distclean before compiling for different
> architecture it still fails.
>
> Steps to reproduce the issue:
>
> 1. git clone git://xenbits.xen.org/xen.git
> <http://xenbits.xen.org/xen.git> xen.git
> 2. make dist-xen XEN_TARGET_ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu
> 3. make distclean
> 4. make dist-xen XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf-
>
> Compilation fails at step 4.
>
> 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.
This is expected. You have to use make distclean will only clean the 
files of the host architecture (e.g x86). For cross-compilation, you 
will have to do make distclean XEN_TARGET_ARCH=arm64
Regards,

--
Julien Grall

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