<solved> freebsd equiv of libdl.a (load shared libs)
mdh
mdh_lists at yahoo.com
Wed Mar 26 15:31:16 PDT 2008
--- Steve Franks <stevefranks at ieee.org> wrote:
> On Wed, Mar 26, 2008 at 2:39 PM, Steve Franks
> <stevefranks at ieee.org> wrote:
> > I am porting a linux app which is looking for
> libdl.a (which I
> > understand from googling is related to loading of
> shared libs). The
> > app makes a libusb-based shared lib. FreeBSD
> uses shared libs, so I
> > assume there is equivalent functionality
> somewhere. I also see
> > libdl.a in /compat/linux/lib, but I assume if I
> link a native FreeBSD
> > app against this, fireworks will be the only
> result. I further assume
> > since I got no error from gcc, that some freebsd
> header actally points
> > to the exact functions expected in libdl.a, so
> they are in there
> > somewhere....
> >
> > Steve
> >
> > --
> > Steve Franks, KE7BTE
> > Staff Engineer
> > La Palma Devices, LLC
> > http://www.lapalmadevices.com
> > (520) 312-0089
> >
>
> Looks like changing -ldl to -lc (libc.a) to the link
> step in my
> makefile did it. No idea why they weren't picking
> that up...
>
> Steve
You don't need -lc. C compilers link in libc
regardless. You may also want to consider letting it
load dynamically at runtime rather than linking the
static .a file at compile-time.
Chances are what it was looking for was dlopen() and
friends, which are in libc on FreeBSD. They are a
part of libc on my Linux systems as well though, so
not sure why it'd be trying to link against another
library, though admittedly I know a lot more about
development for FreeBSD than for Linux.
- mdh
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