[OE-core] [PATCH] strace: clear native sysroot references from CFLAGS_FOR_BUILD etc

[Andre McCurdy]

On Sat, Jan 16, 2016 at 1:01 AM, Richard Purdie
<richard.purdie at linuxfoundation.org> wrote:
> On Tue, 2016-01-12 at 17:47 -0800, Andre McCurdy wrote:
>> strace uses CC_FOR_BUILD to compile temporary utility apps to run as
>> part of the build process. There's no need to build those utils
>> against the native sysroot though (and things sometimes go wrong if
>> we
>> do), so clear CFLAGS_FOR_BUILD etc.
>>
>> Signed-off-by: Andre McCurdy <armccurdy at gmail.com>
>
> I ran this along with the other strace patches under master-next on the
> autobuilder. We saw:

OK, I think I see real issue. Previous patch was OK, but it wasn't the
host gcc calls seen in the log which were failing. The failure is
actually coming from gcc commands being run from within the "mpers.sh"
script, which don't show up directly in the do_compile log. For
example, commands such as:

  x86_64-poky-linux-gcc -m64 -march=core2 -mtune=core2 -msse3
-mfpmath=sse --sysroot=/.../build/tmp/sysroots/qemux86-64
-DHAVE_CONFIG_H -I./linux/x86_64 -I../strace-4.11/linux/x86_64
-I./linux -I../strace-4.11/linux -I. -I../strace-4.11 -gdwarf-2 -c
-m32 mpers-m32/kernel_dirent.c -o mpers-m32/kernel_dirent.o

ie the 64bit cross compiler is being used to try to generate 32bit
binaries, which it doesn't support.

Adding multiarch to DISTRO_FEATURES might be a workaround.

I'll dig around a little more to see if there are better solutions.


> https://autobuilder.yoctoproject.org/main/builders/ptest-x86-64/builds/
> 251/steps/BuildImages/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64-lsb/b
> uilds/616/steps/BuildImages/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64-lsb/b
> uilds/616/steps/BuildImages_1/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64/build
> s/615/steps/BuildImages/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/nightly-x86-64/build
> s/615/steps/BuildImages_1/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/nightly-multilib/bui
> lds/611/steps/BuildImages_4/logs/stdio
>
> https://autobuilder.yoctoproject.org/main/builders/build-appliance/buil
> ds/589/steps/BuildImages_1/logs/stdio
>
> So there is still something not right here. I've not looked into the
> details of the issue.
>
> Cheers,
>
> Richard