From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: libgcrypt
Date: Thu, 07 Feb 2013 12:08:15 +0100
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References: <201302062335.21194.andreas@enge.fr> <87y5f1awvz.fsf@gnu.org>
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To: Andreas Enge <andreas@enge.fr>
Cc: bug-guix@gnu.org

Andreas Enge <andreas@enge.fr> skribis:

> Am Mittwoch, 6. Februar 2013 schrieb Ludovic Court=C3=A8s:

[...]

>> Passing --with-libgcrypt-prefix allows it to work with non-standard
>> prefixes.
>
> ... under guix, $HOME/.guix-profile/{lib,...} is the standard prefix ;-)

Yes, but it remains =E2=80=9Cnon-standard=E2=80=9D to ld.so, ld, etc.

> So would it be possible to modify the test so that it takes LIBRARY_PATH=
=20
> into account? (If it were C, the AC macros would do that automatically.) =
Or=20
> could one simply use AC_CHECK_LIB?

No, because we precisely want to check that Guile=E2=80=99s =E2=80=98dynami=
c-link=E2=80=99 finds
it, because that=E2=80=99s what is used in guix/utils.scm (in turn,
=E2=80=98dynamic-link=E2=80=99 uses lt_dlopenext, which uses dlopen.)

Thus the influential environment variables are LTDL_LIBRARY_PATH and
LD_LIBRARY_PATH.

When we have a full-blown distro, all those *PATH variables will be
initialized by /etc/profile, so that everything is transparent.  In the
meantime, one has to set them in their own ~/.bashrc.

> If not, a possible work-around would be to check explicitly with the=20
> $HOME/.guix-profile/lib prefix.

I=E2=80=99d rather let users do one of the above than add something specifi=
c.

Ludo=E2=80=99.