Mono.Cairo in Unity 3.5 on OS X

Questions & Answers
1

I can’t figure out how to use Cairo in an editor script on OS X Lion. I’ve tried adding the assembly in MonoDevelop but Unity overwrites that immediately. I can copy the assembly to the Unity assets, but then it fails to find “libcairo-2.dll”. I’ve tried adding mappings to various config files to point it at libcairo.2.dylib, but nothing seems to work. I set MONO_LOG_LEVEL to debug and watch it try to load the library and it fails while looking for various libcairo-2.dll/so/dll.so/dylib/dll.dylib, etc.

I am using .Net 2.0 in the player settings. Any pointers?

I’m trying to generate textures. If not Cairo, is there another graphics API that does work?

2

My, somewhat hacky implementation, was to re-compile Mono.Cairo with a reference to /Library/Frameworks/Mono.framework/Libraries/libcairo.2.dylib and then reference this managed assembly by adding it to Assets/Plugins.

For use in editor you also need to replace any instances of the Mono.Cairo.dll assembly located in the Unity Editor app bundle.

This worked for me at least.