I can see that you are generating for shader model 2.1 ( from the line [82%]kernel_sm_21… )
the defaults in blender are too high for my machine, so i always have to edit the build settings for mine and make it say sm_12. i use cmake instead of scons so i don’t know how you’d go about changing that variable, but i just thought to suggest double-checking to make certain that you have the shader model that your hardware supports. this is just a shot in the dark I hope it helps.
Thank you for your answer and sorry for answering so late,
My 560 Ti supports Shader Model 2.1, and that’s the only one I compile. This problem didn’t occur in the past and it appeared suddently…