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Date: Wed, 15 Jun 2016 16:16:55 +0800
From: Lei Zhang <zhanglei.april@...il.com>
To: musl@...ts.openwall.com, Khem Raj <raj.khem@...il.com>,
Luca Barbato <lu_zero@...too.org>
Subject: Re: Dynamic linker name
2016-06-15 15:10 GMT+08:00 Felix Janda <felix.janda@...teo.de>:
> Lei Zhang wrote:
>> 2016-06-14 23:56 GMT+08:00 Lei Zhang <zhanglei.april@...il.com>:
>> > 2016-06-14 23:11 GMT+08:00 Rafael Espíndola <rafael.espindola@...il.com>:
>> >> Sorry, but my understanding is that r272662 is correct for x86, no?
>> >>
>> >> We can definitely add support for more arches with musl if someone sends a
>> >> patch to the list.
>> >
>> > If no one intends to do this, I can prepare further patches and
>> > relevant test cases for other archs.
>>
>> Now I'm determining the $ARCH field in musl's dynamic linker name for
>> non-x86 archs. After reading these two patches (thanks to their
>> authors):
>>
>> http://git.alpinelinux.org/cgit/aports/plain/main/clang/clang-0004-Add-musl-targets-and-dynamic-linker.patch
>> https://github.com/kraj/meta-clang/blob/master/recipes-devtools/clang/clang/0001-clang-driver-Add-musl-ldso-support.patch
>
> You should really take a look at musl's configure script.
I should've done that. Sorry for my laziness...
> For mips* and powerpc* there are also "-sf" variants. There are also
> "mipsr6*" and "mipsn32*" which might or might not be supported by llvm.
>From LLVM's code, it seems these variants aren't supported.
>> BTW, I leaved out x32 on purpose, since musl's support for it is
>> experimental (right?), and it requires yet another environment type
>> "muslx32" in LLVM.
>
> x32 support has been in musl for many releases, whereas mips64 has
> not landed in a released version of musl, yet...
So now I have this list:
i386
x86_64
powerpc
powerpc64
mips
mipsel
mips64
mips64el
which should just work out the box with my previous patch. I'll take
care of x32 and ARM (subarchs and ABIs) with further patches.
Lei
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