@pkouame I've tried to compile this:
https://github.com/calumr/flurry, adding to Xcode 10.1 the MacOSX10.5 SDK taken from here:
https://github.com/phracker/MacOSX-SDKs/releases
then I have removed the ppc, leaving only i386 and adding x86_64 architecture to the build deployment settings, then needed to set
#include <Texture.h> #include <PTypes.h> as "Texture.h" and "PTypes.h"
also trying to target to macOSX 10.6 , but I still get one error about "-fobjc-weak" or "clang: error" can't figure it out.
I wanted to remove the linked OpenGL.framework from the project cause Flurry screensaver also work with only CoreImage rendering.
Tried also to edit the .4 Flurry binary and NOP many GL init and GL functions, but still get the grey screensaver.
I've tried also the edit its Info.plist adding something like this setting bool FALSE:
https://developer.apple.com/documentation/spritekit/skview/requesting_the_opengl_renderer
I found an old already compiled flurry from this original source but of course doesn't supported on these modern macOSs.
As funny workaround (but it is a great work), here is flurry for those who were missing it from 10.14.4 :
http://roycurtis.github.io/Flurry-WebGL/