Specify compiler when using CUDA

I try to build a project which uses CUDA. The CUDA on my machine is the newest 9.1. The following error is reported:

In file included from /opt/cuda/include/host_config.h:50:0,
                 from /opt/cuda/include/cuda_runtime.h:78,
                 from <command-line>:0:
/opt/cuda/include/crt/host_config.h:121:2: error: #error -- unsupported GNU version! gcc versions later than 6 are not supported!
 #error -- unsupported GNU version! gcc versions later than 6 are not supported!
  ^~~~~

Check /opt/cuda/include/crt/host_config.h:

#if __GNUC__ > 6

#error -- unsupported GNU version! gcc versions later than 6 are not supported!

#endif /* __GNUC__ > 6 */

The solution is to specify the gcc-6 compiler during running cmake command:

# cmake -DCMAKE_C_COMPILER=gcc-6 -DCMAKE_CXX_COMPILER=g++-6 ..

The reference is here.