Error compiling OpenCV Ubuntu 16.04 with CUDA

[eokeeffe]

Please state the information for your system

• OpenCV version: 3.1
• Host OS: Ubuntu 16.04 LTS
• Nvidia-367 with CUDA 7.5
  -Compiler & CMake: GCC 5.3 & CMake 3.5

In which part of the OpenCV library you got the issue?

Examples:

• core, cuda

Error generated using gcc & cmake in 16.04 LTS
Error generated:
/usr/include/string.h: In function ‘void* mempcpy_inline(void, const void, size_t)’:
/usr/include/string.h:652:42: error: ‘memcpy’ was not declared in this scope
return (char *) memcpy (__dest, __src, __n) + __n;

Using the methods in [https://github.com/BVLC/caffe/issues/4046] by adding

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_FORCE_INLINES")

to the top of the CMakeLists.txt, everything compiled and worked fine

[alalek]

Duplicate: #6500