Re: [Bug-gnucap] gnucap fails at start due to " ^ ? : cannot open shared object file: No such file or directory"

On Mon, 1 Aug 2016 19:13:52 +0200
Felix Salfelder <[email protected]> wrote:

> PS: yes, it's a bug... YMMV
> 

If I change the name back to libgnucap-default-plugins.so everywhere it
works.

I have always found the library search path somewhat confusing.  It is
explained in man dlopen.

One line is of note ....

      o   The cache file /etc/ld.so.cache (maintained by ldconfig(8))
      is checked to see whether it contains an entry for filename.


ok ...  I thought the path was the same as for libraries, so why didn't
gnucap-default-plugins.so load?  ......  It is in that search
path.  ....  Reason:  it doesn't start with "lib" so it wasn't cached,
so without $LD_LIBRARY_PATH what is left is:

      o   The directories /lib and /usr/lib are searched (in that order).

There, it can be found without the "lib" prefix.

The fix coming turns out to be needed by multiload anyway ...  Gnucap
needs an explicit search path for plugins.