[PATCH, AARCH64] MULTIARCH_DIRNAME breaks multiarch build

Zhenqiang Chen zhenqiang.chen@linaro.org
Fri Jan 10 09:49:00 GMT 2014


On 10 January 2014 17:23, Matthias Klose <doko@ubuntu.com> wrote:
> Am 10.01.2014 09:23, schrieb Zhenqiang Chen:
>> Hi,
>>
>> MULTIARCH_DIRNAME was removed @r196649 since the dir info had been
>> combined in MULTILIB_OSDIRNAMES.
>>
>> But MULTIARCH_DIRNAME was re-added @r201164. With this change, the
>> final multiarch_dir is combined as
>> "aarch64-linux-gnu:aarch64-linux-gnu", which is incorrect and leads to
>> multiarch build fail if the sysroot is in correct multiarch layout.
>>
>> Any reason to add MULTIARCH_DIRNAME? If it is not necessary, can we
>> remove it as the patch?
>
> see the thread "[patch] set MULTIARCH_DIRNAME for multilib architectures" from
> June 2013.  I think it is necessary to have the default defined.  Yesterday's
> build looks ok for me, looking at default and include paths, so maybe I don't
> yet understand the issue.

In our build, we configure eglbc with
rtlddir=/lib
libdir=/usr/lib/aarch64-linux-gnu
slibdir=/lib/aarch64-linux-gnu

And we configure gcc with "--disable-multilib --enable-multiarch",
But when building gcc libraries, configure FAIL since it can not find
the C libraries. And I try
./xgcc --print-multiarch
the output is "aarch64-linux-gnu:aarch64-linux-gnu"

Any comments?

Thanks!
-Zhenqiang



> I think aarch64 is the only architecture which introduces MULTILIB_* macros
> without actually building any multilib, just to set the default library name to
> lib64. So maybe this has some side effects.
>
>   Matthias
>



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