Hi Ralf, On 2011-04-02 10:42 +0200, Ralf Wildenhues wrote: > * Nick Bowler wrote on Fri, Apr 01, 2011 at 04:04:21PM CEST: > > I'm working on a project which uses libltdl to load modules, and I've > > set it up in a manner pretty similar to what's described in the libtool > > manual (10.3 Linking with dlopened modules, http://xrl.us/bjk9e5). > > In that section, the manual recommends to use a weak library interface. > > > > However, the example given in the manual does not work because > > the generated makefile lacks dependencies from libloader.la to > > libinterface.la's objects. > > Indeed. The reference to the internal *_OBJECTS variable is surprising. > It would be cleaner to have a libfoo_conv.la convenience > (noinst_LTLIBRARIES) archive that had the same sources as libfoo.la and > add that to libbar_la_LIBADD. > > A patch to fix libtool.texi to this end would be appreciated.
Indeed, a convenience library does at least seem like an improvement over what's currently in the manual, irrespective of whether the approach is ideal. I can probably cook up the patch for this when I have some time. > One thing that I wonder about is why you actually need the foo code to > be both in libfoo and libbar. If possible, then code should only ever > exist in one shared library. (I may be missing details from the > dlpreopen machinery here now, it's been a while ... feedback as to what > worked for you appreciated.) I don't know the answer to this question, either. I haven't actually gotten everything working, yet: I was just trying out what the manual suggested and ran into this issue. When/if I get things working I'll let you know, but for now I've put this issue on the back burner so it might be a while. -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
