FreeBSD links wrong library for tests if one is installed in $prefix

[Vincent Lefevre]

On 2017-06-28 13:55:41 +0200, Torbjorn Granlund wrote:
> Emmanuel Thomé <Emmanuel.Thome at inria.fr> writes:
> 
>   freebsd's ld, which is a venerable GNU binutils 2.17.50 dated 2007-07-50
>   (yes, I'm talking about the current freebsd), does not emit new dtags
>   (runpath vs rpath) by default.
>   
> Ouch, I hadn't noticed that.
> 
> Our test environment includes many (virtualised) fbsd systems but they
> might all have a non-archaic binutils installed in /usr/local.

Note also that the problem will be detected only if there is an
ABI-compatible GMP library installed under a non-default directory
(used as $prefix). Is this the case in your test environments?

> The fbsd developers' GNU/Linux envy is projected at GPL hate which in
> turn badly hurts their own system.

This is not fair. The current behavior is the same as various Linux
systems, including Debian until Jessie. AFAIK, this is the default
binutils behavior. The issue with FreeBSD is that there was a bug
in their dynamic loader and libtool regarded this bug as a feature
(instead of assuming that both behaviors could occur). After the fix
of this bug, things got wrong with libtool.

The old dtags are much better for "make check" without wrapper
scripts, as LD_LIBRARY_PATH isn't in the way. If only the new dtags
are supported in the future, then wrapper scripts should be made
mandatory (i.e. no -no-install).

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)