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Date: Tue, 28 May 2013 15:56:14 +0200
From: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
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Subject: Re: [PATCH] gcc 4.8: use /lib/ for AArch64
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W dniu 28.05.2013 01:23, Khem Raj pisze:
> On May 27, 2013, at 7:40 AM, Marcin Juszkiewicz
> <marcin.juszkiewicz@linaro.org> wrote:

>> +++ b/meta/recipes-devtools/gcc/gcc-4.8/use-lib-for-aarch64.patch
>> @@ -0,0 +1,23 @@
>> +From: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
>> +
>> +AArch64 is built with /lib/ as prefix but GCC 4.8 tries to use /lib64/
>> +path so build fails.
>> +
>> +It may affect builds when /lib64/ will be used but so far it is not
>> +default.
>> +
> 
> Marcin,
> 
> what is the multilib strategy for aarch64? i think using lib64 for
> 64bit and keep /lib for 32bit apps would be ideal so you can keep the
> existing apps running. In OE we have convoluted x86_64 where when not
> using mutlilib it uses /lib for 64bit apps and when doing multilib it
> does /lib64 for default 64bit apps and /lib for 32bit apps its quite
> confusing. For arm lets not follow those footsteps and use /lib64 for
> 64bit from the onset and then multilib can come later and will fit in
> nicely.

I will leave that decision to Riku as new meta-linaro maintainer.

My view is that so far AArch64 is still in kind of "testing phase" rather
then fully used system. Switch to /lib64/ would require far more patches
(gcc-4.7, eglibc etc) than switching to /lib/ which is used since we
started with this architecture.