At Tue, 21 Nov 2006 14:47:15 +0100,
Benoit Fouet wrote:
>
> Takashi Iwai wrote:
> > At Tue, 21 Nov 2006 07:34:07 -0600,
> > r10 kindsofpeople wrote:
> >
> >> First, let me apologize a second time...I thought I had found this thread on
> >> Alsa-user, but in fact it was posted to alsa-cvslog. I imagine it was more
> >> than a bit confusing without the context of the rest of the thread.
> >>
> >> The bulk of that message was:
> >> -----------------------------------------
> >> -lm -ldl -lpthread are _not_ needed in Libs (since the alsa interface
> >> doesn't depend on libm, libdl or libpthread interface) and just bring
> >> unneeded dependencies. These should rather be put in Libs.private:
> >>
> >> Libs: -L${libdir} -lasound
> >> Libs.private: -lm -ldl -lpthread
> >>
> >> See ALSA bug#2212 .
> >> -----------------------------------------
> >> and what follows after that was a difference file for making these changes
> >> to alsa.pc.in
> >>
> >> I'm trying to build the library to run on a uClinux target that apparently
> >> does not support libdl. But when I build the alsa library with
> >> --disable-shared --enable-static it still terminates when it can't find
> >> libdl.
> >>
> >
> > Do you mean the build of alsa-lib itself? Then alsa.pc is
> > irrelevant. It must be in src/Makefile.am. Try to remove -ldl
> > there.
> >
> Will that change anything to his problem, though ?
Not sure. I just gave the solution for the missing libdl because he
never mentioned about the missing _functions_ during compilation.
> I mean, won't he need to remove _the code_ that uses dl* functions or,
> at least, write something to remap dl* functions on functions ? Those
> would just passes back a fake handle on dlopen, does nothing on dlclose,
> and gives back good functions on dlsyms calls.
> (and if he doesn't use plugins, this should be ok)
>
> please tell me if i'm completely lost :)
If the system really provides no wrapper for dl*(), then yes, all
dl*() should be removed. It would be easy because basically all dl*
calls are wrapped already by snd_dl*() functions inside alsa-lib.
Takashi
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