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Date:      Sun, 22 Jan 2017 12:57:18 -0800
From:      Johannes Lundberg <johalun0@gmail.com>
To:        Dimitry Andric <dim@freebsd.org>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Linker problems with clang /usr/local/lib
Message-ID:  <CAECmPwvGa-Z0cUYgKvSz%2BV_5LoTccWDirAGMLD=_2jXhJKJkFw@mail.gmail.com>
In-Reply-To: <D6AD09B8-A7B6-4498-84F8-9A31B4AAB8A0@FreeBSD.org>
References:  <CAECmPwvq07zQ2H6wUk85=QhcbVE2Hu-vSQF3anhuStomkx7yGA@mail.gmail.com> <D6AD09B8-A7B6-4498-84F8-9A31B4AAB8A0@FreeBSD.org>

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I found a way to pass various linker flags to Rust through the
.cargo/config file which is doable for now.

However, in man pages it says that ld looks in /etc/ld.so.conf for paths..
This seem broken. While a solution, having to write wrappers sounds like a
workaround that shouldn't be needed...


On Sun, Jan 22, 2017 at 12:42 PM, Dimitry Andric <dim@freebsd.org> wrote:

> On 22 Jan 2017, at 21:29, Johannes Lundberg <johalun0@gmail.com> wrote:
> >
> > How can I make 'cc' (/usr/bin/ld) look for libraries in /usr/local/lib
> > without having to specify environment or command line variables?
> >
> > I got "/usr/local/lib" in /etc/ld.so.conf and /var/run/ld-elf.so.hints.
> >
> > /sbin/ldconfig -l xxx can find library xxx in /usr/local/lib
> >
> > /usr/bin/ld can not.
> >
> > This is a problem when building Rust crates with Cargo which does not
> care
> > about env variables like LDFLAGS. I can however override the linker and
> use
> > 'gcc' which solves the problem but I assume it should be possible to get
> > clang (cc) to look in /usr/local/lib as well.
> >
> > Anyone got any ideas?
>
> Create a wrapper script that adds -L/usr/local/lib to the link command
> line, and invokes the 'real' cc or ld.  Then either let Rust call the
> wrappers, or put them in a directory that is in front of your PATH.
>
> -Dimitry
>
>



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