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Re: [musl] Re: [PATCH resent] uapi libc compat: allow non-glibc to opt out of uapi definitions

From Rich Felker <dalias@aerifal.cx>
Newsgroups linux.kernel
Subject Re: [musl] Re: [PATCH resent] uapi libc compat: allow non-glibc to opt out of uapi definitions
Date 2017-03-08 17:50 +0100
Message-ID <tiMWJ-Kk-1@gated-at.bofh.it> (permalink)
References <sCiYi-4ee-21@gated-at.bofh.it> <tiMk2-uK-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Mar 08, 2017 at 10:53:00AM -0500, Carlos O'Donell wrote:
> On 11/11/2016 07:08 AM, Felix Janda wrote:
> > Currently, libc-compat.h detects inclusion of specific glibc headers,
> > and defines corresponding _UAPI_DEF_* macros, which in turn are used in
> > uapi headers to prevent definition of conflicting structures/constants.
> > There is no such detection for other c libraries, for them the
> > _UAPI_DEF_* macros are always defined as 1, and so none of the possibly
> > conflicting definitions are suppressed.
> > 
> > This patch enables non-glibc c libraries to request the suppression of
> > any specific interface by defining the corresponding _UAPI_DEF_* macro
> > as 0.
> > 
> > This patch together with the recent musl libc commit
> > 
> > http://git.musl-libc.org/cgit/musl/commit/?id=04983f2272382af92eb8f8838964ff944fbb8258
> 
> Would it be possible to amend the musl patch to define the macros to 1.

I don't follow. They're defined to 0 explicitly to tell the kernel
headers not to define their own versions of these structs, etc. since
they would clash. Defining to 1 would have the opposite meaning.

Rich

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Re: [PATCH resent] uapi libc compat: allow non-glibc to opt out of  uapi definitions Carlos O'Donell <carlos@redhat.com> - 2017-03-08 17:10 +0100
  Re: [musl] Re: [PATCH resent] uapi libc compat: allow non-glibc to  opt out of uapi definitions Rich Felker <dalias@aerifal.cx> - 2017-03-08 17:50 +0100
    Re: [musl] Re: [PATCH resent] uapi libc compat: allow non-glibc to  opt out of uapi definitions Carlos O'Donell <carlos@redhat.com> - 2017-03-08 19:40 +0100
  Re: [PATCH resent] uapi libc compat: allow non-glibc to opt out of  uapi definitions Szabolcs Nagy <nsz@port70.net> - 2017-03-09 01:50 +0100
    Re: [PATCH resent] uapi libc compat: allow non-glibc to opt out of  uapi definitions Carlos O'Donell <carlos@redhat.com> - 2017-03-09 02:10 +0100
      Re: [musl] Re: [PATCH resent] uapi libc compat: allow non-glibc to  opt out of uapi definitions Rich Felker <dalias@aerifal.cx> - 2017-03-09 04:10 +0100

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