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Date: Wed, 17 Jun 2020 15:51:38 -0400
From: Jeffrey Walton <noloader@...il.com>
To: musl@...ts.openwall.com
Subject: Re: Is Musl responsible for runpath parsing in an elf file?

On Wed, Jun 17, 2020 at 3:40 PM Szabolcs Nagy <nsz@...t70.net> wrote:
>
> * Jeffrey Walton <noloader@...il.com> [2020-06-15 21:25:15 -0400]:
> > On Mon, Jun 15, 2020 at 9:16 PM Rich Felker <dalias@...c.org> wrote:
> > > On Mon, Jun 15, 2020 at 08:45:18PM -0400, Jeffrey Walton wrote:
> > > > Hi Everyone,
> > > >
> > > > Please forgive my ignorance... Is Musl responsible for runpath parsing
> > > > during elf loading? If it matters, I'm working on Alpine Linux.
> > >
> > > Yes, loading of all libraries except the dynamic linker itself (which
> > > includes libc on musl) is the responsibility of the dynamic linker and
> > > is performed in userspace.
> > >
> > > When searching for a given library as a dependency (DT_NEEDED), musl's
> > > processing of rpath/runpath uses the runpath of the shared object
> > > that's depending on it and causing it to be pulled in, and continues
> > > this resolution recursively backwards, potentially up to the main
> > > program's runpath, if not found.
> >
> > Thanks Rich.
> >
> > I may have mis-filed this against Alpine:
> > https://gitlab.alpinelinux.org/alpine/aports/-/issues/11655.
> >
> > Is it expected behavior? Should I move it to Musl bug tracker?
>
> yeah i remember this discussion
>
> https://sourceware.org/legacy-ml/binutils/2019-06/msg00014.html
>
> i think there is no good solution, you have to figure
> out the right level of escape magic for your build
> system when passing runpath flags.

Man, I'm getting old. I forgot about that discussion.

My memory is not worth a shit anymore...

Jeff

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