[gentoo-musl] Re: Add support for musl-libc on Linux

[Rafael Espíndola via llvm-commits]

Do you need someone to commit it for you?
On Jun 13, 2016 9:50 AM, "Lei Zhang via cfe-commits" <
cfe-commits at lists.llvm.org> wrote:

> 2016-06-13 21:21 GMT+08:00 Felix Janda <felix.janda at posteo.de>:
> > [Added CC to the musl list]
> >
> > Lei Zhang wrote:
> >> 2016-06-13 3:07 GMT+08:00 Joerg Sonnenberger <joerg at bec.de>:
> >> > On Sun, Jun 12, 2016 at 10:51:11AM +0800, Lei Zhang via llvm-commits
> wrote:
> >> >> Hi,
> >> >>
> >> >> I'm replying to this thread; sorry I wasn't subscribed to the list,
> >> >> thus cannot reply to it directly.
> >> >>
> >> >>
> http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20160606/161733.html
> >> >>
> >> >> Joerg, thanks for your reply. Could you please tell me what kind of
> >> >> test cases I should prepare?
> >> >
> >> > The target/triple parser has a unit test in
> >> > unittests/ADT/TripleTest.cpp. The rest should get output validation in
> >> > clang's test/Driver directory. Not sure which one is the primary
> >> > GNU/Linux test.
> >>
> >> Thanks for the pointer :)
> >>
> >> The patches are re-attached with test cases included. Do they look sane
> enough?
> >
> >> --- lib/Driver/ToolChains.cpp   (revision 272546)
> >> +++ lib/Driver/ToolChains.cpp   (working copy)
> >> @@ -4152,6 +4152,8 @@
> >>
> >>    if (Triple.isAndroid())
> >>      return Triple.isArch64Bit() ? "/system/bin/linker64" :
> "/system/bin/linker";
> >> +  else if (Triple.getEnvironment() == llvm::Triple::Musl)
> >> +    return "/lib/ld-musl-" + Triple.getArchName().str() + ".so.1";
> >
> > It does not seem to me that the dynamic linker name detection will work
> > on most archs not in the test cases. For example, the arm gentoo musl
> > stage3's have the target triple
>
> You're right. Frankly I've only had x86 platforms on my mind so far;
> but I agree with Rafael that we could extend this to other archs in
> the future.
>
> > It seems difficult to get all cases right and some of them might not be
> > very interesting, but it would be nice to have a more intelligent patch.
> > See for example
> >
> >
> http://git.alpinelinux.org/cgit/aports/plain/main/clang/clang-0004-Add-musl-targets-and-dynamic-linker.patch
>
> This looks neat :)
>
>
> Lei
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