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

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

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

Hi,

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 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.

They should be deleted on `make clean`.  They are temporary files just like .o's

~Andrew

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