cmake-gui: Need field to set CMAKE_CUDA_HOST_COMPILER

Trying to configure CMakeLists.txt, I got

this CMake output.

The CXX compiler identification is GNU 5.4.0
The CUDA compiler identification is NVIDIA 8.0.61
Check for working CXX compiler: /usr/bin/g++-5
Check for working CXX compiler: /usr/bin/g++-5 -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
Detecting CXX compile features
Detecting CXX compile features - done
Check for working CUDA compiler: /opt/cuda/bin/nvcc
Check for working CUDA compiler: /opt/cuda/bin/nvcc -- broken
CMake Error at /usr/share/cmake-3.9/Modules/CMakeTestCUDACompiler.cmake:45 (message):
  The CUDA compiler "/opt/cuda/bin/nvcc" is not able to compile a simple test
  program.
It fails with the following output:
Change Dir: /tmp/cuda_test-build/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_43008/fast"
/usr/bin/make -f CMakeFiles/cmTC_43008.dir/build.make
CMakeFiles/cmTC_43008.dir/build
make[1]: Verzeichnis „/tmp/cuda_test-build/CMakeFiles/CMakeTmp“ wird
betreten
Building CUDA object CMakeFiles/cmTC_43008.dir/main.cu.o
/opt/cuda/bin/nvcc -x cu -c
/tmp/cuda_test-build/CMakeFiles/CMakeTmp/main.cu -o
CMakeFiles/cmTC_43008.dir/main.cu.o
nvcc warning : The 'compute_20', 'sm_20', and 'sm_21' architectures are
deprecated, and may be removed in a future release (Use
-Wno-deprecated-gpu-targets to suppress warning).
Linking CUDA device code CMakeFiles/cmTC_43008.dir/cmake_device_link.o
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_43008.dir/dlink.txt
--verbose=1
/opt/cuda/bin/nvcc -Xcompiler=-fPIC -Wno-deprecated-gpu-targets -shared
-dlink CMakeFiles/cmTC_43008.dir/main.cu.o -o
CMakeFiles/cmTC_43008.dir/cmake_device_link.o
Linking CUDA executable cmTC_43008
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_43008.dir/link.txt
--verbose=1
g++ CMakeFiles/cmTC_43008.dir/main.cu.o
CMakeFiles/cmTC_43008.dir/cmake_device_link.o -o cmTC_43008
-L"/opt/cuda/lib64/stubs" -L"/opt/cuda/lib64" -lcudadevrt -lcudart_static
-lrt -lpthread -ldl
/usr/bin/ld: CMakeFiles/cmTC_43008.dir/main.cu.o: relocation R_X86_64_32
against `.bss' can not be used when making a shared object; recompile with
-fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: Fehler: ld gab 1 als Ende-Status zurück
make[1]: *** [CMakeFiles/cmTC_43008.dir/build.make:117: cmTC_43008] Fehler
1
make[1]: Verzeichnis „/tmp/cuda_test-build/CMakeFiles/CMakeTmp“ wird
verlassen
make: *** [Makefile:126: cmTC_43008/fast] Fehler 2
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:13 (project)
Configuring incomplete, errors occurred!
See also "/tmp/cuda_test-build/CMakeFiles/CMakeOutput.log".
See also "/tmp/cuda_test-build/CMakeFiles/CMakeError.log".

The important lines seem to be

• Check for working CXX compiler: /usr/bin/g++-5
• g++ CMakeFiles/cmTC_43008.dir/main.cu.o Shouldn't it be g++-5?

My default system compiler is g++ (version 7) (not supported by CUDA), for this project the native compiler was set to g++-5 (supported by CUDA).

I have to set CMAKE_CUDA_HOST_COMPILER to /usr/bin/g++-5 to solve the error.

CMakeOutput.log CMakeError.log