Re: how serious are these compiler warnings?

[Rick Jones <rick jones2 hp com>]

> > Am I correct in assuming that also means main?
>
>
> I've never encountered that case, where libfoo.so referenced a function quux()
> and the body was supplied by the main program.  Usually, it's done in some
> way where libfoo calls through a function pointer, and the address of quux() is
> passed as a parameter when registering the callback....

I'm rapidly arriving at the conclusion I may have to restructure my code 
to register these callbacks with my own libraries.  Windows was strike 
one, OpenVMS strike two, and now AIX is strike three.

> > I think I need to take option a - in my case libfoo is being dynamically 
> > loaded vi g_module_open.
> >
> > I would have thought that libtool would have included that option for 
> > AIX when it was told to -export-dynamic?
>
>
> Check what version of libtool - many older ones (and possibly new ones) will
> get weirded out by the bizarre semantics of the AIX linker.....
>
> Also, read the documentation on -brtl as well - there's some gotchas. One biggie
> is that just adding -brtl to the final link of the main program doesn't actually
> do much good - you need to rebuild the glib and gtk shared library objects
> with -brtl as well, because if the .so doesn't have some stuff tagged in the
> header, the main program's runtime linking won't look at it.  And then once you
> do that, trying to link a main program to it and omitting -brtl will cause
> odd failures....

Joy.  When I tried to recompile glib (I'm not - at least not yet - 
trying to use gtk) the IBM 7.0 compiler went belly-up with an internal 
error.  And, I probably cannot require folks recompile glib and the 
other dependencies of netperf4 (eg libxml2) - that sounds like it would 
rapidly devolve to "since glib was recompiled, now all the other stuff 
on the box using glib must be recompiled..." hell.

> You may find that recoding things to pass a function pointer is the more sane
> way to work around it. ;)

Yep :(

rick jones