platforms/Mac OS/plugins/B3DAcceleratorPlugin/sqMacOpenGL.h:11:20: error: AGL/gl.h: No such file or directory looks like there should be something like #ifdef LION #include <OpenGl/gl.h> #else #include <AGL/gl.h> #endif so the question, what is the proper way to test for LION? any ideas? -- Best regards, Igor Stasenko.