The following warning appears when compiling pymol 1.7.4.0 under OS X 10.10.... layer1/Scene.cpp:9159:7: warning: 'gluPerspective' is deprecated: first deprecated in OS X 10.9 - "Use GLKMatrix4MakePerspective" [-Wdeprecated-declarations] gluPerspective(fov, aspRat, I->FrontSafe, I->BackSafe); ^ /System/Library/Frameworks/OpenGL.framework/Headers/glu.h:278:13: note: 'gluPerspective' has been explicitly marked deprecated here extern void gluPerspective (GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar) OPENGL_DEPRECATED_MSG(10_0, 10_9, "Use GLKMatrix4MakePerspective"); ^ from https://www.opengl.org/discussion_boards/showthread.php/184541-gluPerspectiv..., it would appear that we want to use something like... --- layer1/Scene.cpp.orig 2014-12-11 12:48:50.000000000 -0500 +++ layer1/Scene.cpp 2014-12-11 13:03:26.000000000 -0500 @@ -9156,7 +9156,8 @@ } if(!SettingGetGlobal_b(G, cSetting_ortho)) { float fov = SettingGetGlobal_f(G, cSetting_field_of_view); - gluPerspective(fov, aspRat, I->FrontSafe, I->BackSafe); + // gluPerspective(fov, aspRat, I->FrontSafe, I->BackSafe); + glMultMatrix(GLKMatrix4MakePerspective(fov, aspRat, I->FrontSafe, I->BackSafe).m); } else { height = fmax(R_SMALL4, -I->Pos[2]) * GetFovWidth(G) / 2.f; width = height * aspRat; However I am concerned about how using GLKit will interact with the X11 GL wrapper libraries. Have those been enhanced to interoperate with GLKit? Thanks in advance for any information. Jack