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Date: Tue, 13 Feb 2018 16:33:54 +0200
From: Dmitry Golovin <dima@...ovin.in>
To: "musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: Re: shmctl not found when compiling compiler-rt

Thank you for the patch, but I don't think it is relevant to this problem.

If you take a look at my build script, you'll see that I don't need it: https://github.com/tpimh/ngtc/blob/alpine/build.sh#L73

Regards,
Dmitry

13.02.2018, 16:31, "Matúš Olekšák" <oleksak.matus@...il.com>:
> Try this patch to correctly link compiler-rt.
>
> 2018-02-13 15:15 GMT+01:00 Szabolcs Nagy <nsz@...t70.net>:
>> * Dmitry Golovin <dima@...ovin.in> [2018-02-13 15:34:34 +0200]:
>>> I'm trying to compile compiler-rt with musl and it used to be fine, but I can't succeed with recent versions of compiler-rt.
>>>
>>> The compilation fails because of the lack of real_shmctl while musl clearly has shmctl: http://git.musl-libc.org/cgit/musl/tree/src/ipc/shmctl.c
>>>
>>> Here is the complete output:
>>>
>>>     llvm/projects/compiler-rt/lib/msan/msan_interceptors.cc:1446:15: error: no member named 'real_shmctl' in namespace '__interception'; did you mean 'real_ioctl'?
>>>         int res = REAL(shmctl)(shmid, shmctl_ipc_stat, &ds);
>>>                   ^~~~~~~~~~~~
>>
>> there should be a
>>
>> DECLARE_REAL(int, shmctl, int shmid, int cmd, void *buf)
>>
>> in that file which defines __interception::real_shmctl.
>>
>>> To compile without glibc on linux using this patch:
>>> https://github.com/tpimh/ngtc/blob/alpine/patch/compiler-rt-01-sanitizer-nongnu.patch
>>>
>>> Regards,
>>> Dmitry

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