Re: libgcrypt

[Ludovic Courtès]

Andreas Enge <address@hidden> skribis:

> Am Mittwoch, 6. Februar 2013 schrieb Ludovic Courtès:

[...]

>> 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 “non-standard” to ld.so, ld, etc.

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

No, because we precisely want to check that Guile’s ‘dynamic-link’ finds
it, because that’s what is used in guix/utils.scm (in turn,
‘dynamic-link’ 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 
> $HOME/.guix-profile/lib prefix.

I’d rather let users do one of the above than add something specific.

Ludo’.