[Libreoffice] rpath / ... for extensions (and the case of PostgreSQL-SDBC)

Hi,

With respect to fdo#45090, that is the GNU/Linux dlopen() does not
find libldap50.so when loading PostgreSQL-SDBC's
postgresql-sdbc-impl.uno.so.

"Naturally", libldap50.so is in $INSTALL_DIR/program/.

Have we already solved this problem, and if yes, how do I apply the
solution to PostgreSQL-SDBC?


If not:

As I understand the problem, in DT_R(UN)PATH, when loading
postgresql-sdbc-impl.uno.so, $ORIGIN is the directory contained that
.so file, not the directory containing soffice.bin. So in some sense,
postgresql-sdbc-impl.uno.so has the "wrong' DT_RUNPATH:

(RPATH)              Library rpath: [$ORIGIN:$ORIGIN/../ure-link/lib]
(RUNPATH)            Library runpath: [$ORIGIN:$ORIGIN/../ure-link/lib]

Thinking of PostgreSQL-SDBC as a bundled extension, it should be:
 $ORIGIN/../../../program:$ORIGIN/../../../ure-link/lib
because it sits in $INSTALL_DIR/share/extensions/postgresql-sdbc

But if it is installed as a shared extension, then it needs to be:
 $ORIGIN/../../../../../../../../program:$ORIGIN/../../../../../../../../ure-link/lib
because it is in 
$INSTALL_DIR/share/uno_packages/cache/uno_packages/FOO.tmp_/postgresql-sdbc-0.8.2.oxt/postgresql-sdbc-0.8.2/linux_x64.plt

So far, so good, we could just merge these four entries. But if it is
installed as a user extension? Then no amount of fiddling with $ORIGIN
will help, since it is in the user's home directory (and where depends
on the LibreOffice version... could be .config/libreoffice/3/... or in
.libreoffice/3/...), and there is no relationship between the
$INSTALL_DIR and that.


So, what can we do?

Either we change the soffice script to set LD_LIBRARY_PATH also on
GNU/Linux, or PostgreSQL-SDBC ships a second copy of libldap50.so.

Now that I think of it, only the copy solution will make it work with
a LibreOffice compiled with --with-openldap, since that LibreOffice
won't ship libldap50.so. But distros will hate that, so they need a
way to disable that... I'd say do it only if LibreOffice is not
configured to use its internal mozldap.

Any opinions, vetos, agreements?

-- 
Lionel