Question

I am running a C# executable which was built with a reference to a .Net library. The .NetLibrary is a wrapper around a C++ library, which resides in another folder (separate folder from the .NetLibrary).

The C++ library is in /usr/local bin
The .Net library is in /projects/csharp/NetWrapperProj/bin/Debug
The executable is in /projects/csharp/testharness/bin/Debug

As you may have guessed from the paths, I am running .Net using mono on Linux (Ubuntu 10.0.4).
mono version 2.10.

How may I specify the required binaries to the executable – to avoid Unhandled Exception: System.IO.FileNotFoundException type exceptions being thrown?

Answer 1

Normally, the DLLs/Libraries need to be in the same directory as the executable. From the Mono website:

If a library location has not been explicitly specified in a DllMap
entry in an application or assembly .config file, Mono will search for
a library in a few places:

• The directory where the referencing image was loaded from.
• In any place the system’s dynamic loader is configured to look
  for shared libraries. For example on Linux this is specified in the
  $LD_LIBRARY_PATH environment variable and the /etc/ld.so.conf file. On
  windows the $PATH environment variable is used, instead.

You can read more at the Mono website on how to remedy this problem.