mono ignores dllmaps in the app.config file

Question

It seem Mono ignores dllmaps in the local configuration file.

I want to port my .NET application on Linux (ubuntu) which calls native libraries so I have dllmaps to make my code work. The mono docs says you have to make a something.exe.config for something.exe and put application specific configs in it. it parses the file (because it complains if I make some spelling mistakes in it) and the filename is correct but it seems it ignores the dllmaps.

The config file is simple:

<configuration>
<dllmap dll="i:openal32.dll" target="libopenal.so" />
</configuration>

Mono does not find the openal32.dll and throws DllNotFoundException. But if I copy that dllmap entry in the main /etc/mono/config file then everything is fine. If do a $MONO_LOG_LEVEL=debug mono... trick to see what it does and I see there is no attempt to load libopenal.so at all. But many tries to load libopenal32.dll, ./libopenal32.dll libopenal32.so, openal32.so, etc. files.

Probably I ran into a Mono bug again?

I want to pack this config file in the archive and I don't want to ask my users to mess with the /etc/mono/config file.

Any ideas?

Answer 1

Are all of your DllImport attributes in the code using "openal32.dll" or are some using "openal32" instead? In any case the config file refers to the assembly that contains the P/Invoke methods: the most likely issue is that you created the config for the main assembly while the P/Invoke methods are in a separate library assembly. Just rename the file to OpenAlUsingAssembly.dll.config.