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Date: Wed, 15 Jun 2016 09:10:04 +0200
From: Felix Janda <felix.janda@...teo.de>
To: musl@...ts.openwall.com
Cc: Khem Raj <raj.khem@...il.com>, Luca Barbato <lu_zero@...too.org>
Subject: Re: Dynamic linker name

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 EspĂ­ndola <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 got the following list:
> 
> i386
> x86_64
> arm
> armhf
> armeb
> armebhf
> aarch64
> aarch64_be
> mips
> mipsel
> mips64
> mipsel64el // this one looks weird
> powerpc
> powerpc64
> 
> Is this list comprehensive? Is there anything wrong? I have no access
> to non-x86 machines at the moment, thus no way to verify them.

As mentioned by Szabolcs Nagy, the patches are not correct for mips:
It should be "mips64el".

For mips* and powerpc* there are also "-sf" variants. There are also
"mipsr6*" and "mipsn32*" which might or might not be supported by llvm.

> 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...

> 
> Thanks,
> Lei

Thanks for moving forward and getting actually something merged.

Felix

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