Because of program compatibility issues I need to downgrade GCC to at least 4.9
How do I do this? Thanks.
EDIT: The program is Blender and am trying to do GPU rendering. The specific error the console is kicking out is
CUDA version 7.5 detected, build may succeed but only CUDA 6.5 is officially supported. Compiling CUDA kernel ... "/usr/local/cuda/bin/nvcc" -arch=sm_52 -m64 --cubin "/usr/share/blender/2.76/scripts/addons/cycles/kernel/kernels/cuda/kernel.cu" -o "/home/matthew/.config/blender/2.76/cache/cycles_kernel_sm52_3A157B804910758CA7C526B5EF063D78.cubin" --ptxas-options="-v" --use_fast_math -I"/usr/share/blender/2.76/scripts/addons/cycles/kernel" -DNVCC -D__KERNEL_CUDA_VERSION__=75 In file included from /usr/local/cuda/bin/../targets/x86_64-linux/include/cuda_runtime.h:76:0, from <command-line>:0: /usr/local/cuda/bin/../targets/x86_64-linux/include/host_config.h:115:2: error: #error -- unsupported GNU version! gcc versions later than 4.9 are not supported! #error -- unsupported GNU version! gcc versions later than 4.9 are not supporte ^ CUDA kernel compilation failed, see console for details. Refer to the Cycles GPU rendering documentation for possible solutions: http://www.blender.org/manual/render/cycles/gpu_rendering.html Error: CUDA kernel compilation failed, see console for details.`