Re: [hpoj-devel] Make install - undefined reference to `usb_init'

[Joe P. <joe...@sn...>]

On Wednesday 14 April 2004 11:36, Phil Clay wrote:
> > From the output you posted, it looks like ExMgr.cpp compiled
> > without errors,
> > but can not be linked. In case 'ldconfig' was not rerun after
> > installing
> > libusb, try running it again. If you installed libusb into
> > /usr/local/lib or
> > some directory tree other than /usr, try adding the library location
> > to /etc/ld.so.conf, then run ldconfig afterward.
> >
> >
> > --
> > Joe
>
> Thanks for helping me on this.  Unfortunately, after running ldconfig, it
> still does not link.  I even rebooted just for fun.  I installed libusb
> into /usr/local/lib, and that is definitely in /etc/ld.so.conf, so I'm not
> sure what's going on.
>
> What files specifically is it looking for when it links?  I should verify
> that they are available.

I'm not sure, but I think ld will be looking for libusb.so, which should be a 
symlink to the actual shared library file you have.

On my system (FC1):

ls -l /usr/lib/libusb* 
<...>
/usr/lib/libusb.so -> libusb-0.1.so.4.3.0



> Any other ideas?

In the hpoj-0.91 directory, try running the ./configure script again after 
running "make distclean". Rerun ./configure with the option 
"--with-libusb=/usr/local" (without the quotes).  Adding that configure 
option should result in a g++ linking command that looks something like this:

g++ -L/usr/local/lib -lusb -o ptal-mlcd ExMgr.o ParPort.o 
transport/ExTransport.o transport/ExMlcTransport.o 
transport/ExMlcCommandChannel.o

As a last resort, you could try adding symlinks in /usr/lib and /usr/include 
that point to your libusb and usb.h respectively.

-- 
Joe