[PPL-devel] User-visible changes to lib-link.m4 and lib-prefix.m4

[Bruno Haible]

Dear Prof. Bagnara,

> We discovered, though, that things stop working for us
> in passing from the versions distributed with with Gettext 0.14.6
> to the versions distributed with Gettext 0.15.

The change between lib-link.m4 of version 0.14.6 and 0.15 is that before,
it assumed the libraries to be installed in $prefix/lib. In 0.15, on
Linux bi-arch systems, i.e. systems which have the system libraries both
in 32-bit mode and in 64-bit mode, when you are compiling in 64-bit mode,
the macros will look for the libraries in $prefix/lib64 rather than in
$prefix/lib.

In 0.18 (or already with the macros in gnulib today) a similar change is
done for Solaris bi-arch systems.

For you, the simple fix is
  cd $prefix
  ln -s lib lib64

The vendor conventions on bi-arch Linux systems are to store 32-bit libraries
in $prefix/lib and 64-bit libraries in $prefix/lib64. Unfortunately this
does not coincide with the GNU default $(libdir), which is $prefix/lib always.
Feel free to follow-up to the discussion started at
  <http://lists.gnu.org/archive/html/autoconf/2008-09/msg00059.html>

Bruno