[gmx-users] Problem compiling 4.6.7 with gpu support

[Saverio Lemme]

Hi,
I am trying to compile gromacs 4.6.7 on a notebook with two gt 650m , ubuntu 
15.10 and cuda 7.0 installed.
On my system are installed gcc 4.8 4.9 and 5.2
For the gpu support I use the following:

cmake .. -DGMX_GPU=ON -DGMX_MPI=ON  -DGMX_BUILD_OWN_FFTW=ON   
-DCMAKE_INSTALL_PREFIX=/home/xxxx/gromacs-4.6.7-gpu  
-DCUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda-7.0

Then make gives me the following obvious error:

[  1%] Building NVCC (Device) object src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/cuda_tools_generated_cudautils.cu.o
In file included from /usr/local/cuda-7.0/include/cuda_runtime.h:62:0,
                 from <command-line>:0:
/usr/local/cuda-7.0/include/host_config.h:105:2: error: #error -- unsupported GNU version! gcc 4.10 and up are not supported!
 #error -- unsupported GNU version! gcc 4.10 and up are not supported!
  ^
CMake Error at cuda_tools_generated_cudautils.cu.o.cmake:206 (message):
  Error generating
  /home/xxxx/sources/gromacs-4.6.7/build/src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir//./cuda_tools_generated_cudautils.cu.o


src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/build.make:71: set di istruzioni per l'obiettivo "src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/cuda_tools_generated_cudautils.cu.o" non riuscito
make[2]: *** [src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/cuda_tools_generated_cudautils.cu.o] Errore 1
CMakeFiles/Makefile2:1311: set di istruzioni per l'obiettivo "src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/all" non riuscito
make[1]: *** [src/gmxlib/cuda_tools/CMakeFiles/cuda_tools.dir/all] Errore 2
Makefile:146: set di istruzioni per l'obiettivo "all" non riuscito
make: *** [all] Errore 2

How can I hint cmake to use gcc4.9?

Thanks in advance.

Saverio