Running NuPIC on Windows

Download software

• Microsoft Visual Studio 2012
• [CMake](2.8 http://www.cmake.org/files/v2.8/cmake-2.8.11.2-win32-x86.exe)
• Python 2.7.5 32bit ("install just for me" option)*:

Set environment variables

PYTHONPATH = path where python is: C:\Python27\Lib
PYTHONHOME = path where python is: C:\Python27
NTA_ROOTDIR = path the project is installed: %USERPROFILE%\nta\eng

• Numpy 1.7.1 32bit (install in same folder that Python)

• Swig for Windows*

• Tip: copy to root and not ProgramFiles (found error probally due to spaces) and include in PATH env variable on Windows.

Porting Code to Win32

Remove in NTA_CXXFLAGS_BASE variable (CMakeLists.txt top file): -Wreturn-type -Wunused-variable -Wno-deprecated

-Include a new folder for Win32 based on: /nupic-master/external/Darwin64 => /nupic-master/external/win32

(If you want I have the Win32 folder with need libraries (apr, zlib, etc) ported to Windows)

include in /nupic-master/nta/engine/network.cpp /nupic-master/nta/utils/Ramdom.hpp /nupic-master/nta/algorithms/unittests/NearestNeighborUnitTest.cpp:

#ifdef _MSC_VER #undef min #undef max #endif

('max' and 'min' are macros already defined by MSVC which create conflits with Nupic code)

in /nupic-master/nta/engine/UniformLinkPolicy.cpp

replace:

return std::make_pair<Fraction, Fraction>(lowerIndex, upperIndex);

to:

return std::make_pair(lowerIndex, upperIndex);

(c++11 deduces the data type, thus it emit error when find explicit declaration)

in /nupic-master/nta/types/Fraction.cpp

replace:

std::swap<int>(numerator_, denominator_);

to:

std::swap(numerator_, denominator_);

(c++11 deduces the data type, thus it emit error when find explicit declaration)

in /nupic-master/nta/ntypes/Buffer.hpp

replace:

size = r->memStream_.readsome(bytes, size);

to:

#ifdef _MSC_VER
  size = r->memStream_._Readsome_s(bytes, size, (std::streamsize)size);
#else
  size = r->memStream_.readsome(bytes, size);
#endif

in /nupic-master/nta/os/env.cpp

replace:

#if defined(NTA_PLATFORM_darwin64) || defined(NTA_PLATFORM_darwin86)
  #include <crt_externs.h>
#else
  extern char **_environ;
#endif

to:

#if !defined(_MSC_VER)
  #if defined(NTA_PLATFORM_darwin64) || defined(NTA_PLATFORM_darwin86)
    #include <crt_externs.h>
  #else
    extern char **_environ;
  #endif
#endif

in /nupic-master/nta/algorithms/bit_history.cpp

replace:

if (denom  < 0.00001 or dcNew > DUTY_CYCLE_UPDATE_INTERVAL)

to:

if (denom  < 0.00001 || dcNew > DUTY_CYCLE_UPDATE_INTERVAL)

(i.e. change "or" to "||")

in /nupic-master/nta/os/Directory.cpp

replace stuff like this:

wcwd
wpath.c_str()

to:

LPSTR(wcwd)
LPCSTR(wpath.c_str())

(Error messages will be help to find more of this problem)

In /nupic-master/external/common/include/boost/throw_exception.hpp:

replace:

#ifdef BOOST_NO_EXCEPTIONS
  void throw_exception( std::exception const & e ); // user defined
#else

to:

#undef BOOST_NO_EXCEPTIONS
#ifdef BOOST_NO_EXCEPTIONS
  void throw_exception( std::exception const & e ); // user defined
#else

in /nupic-master/nta/os/OS.cpp

replace:

#elif NTA_PLATFORM_win32
//We only run on XP/2003 and above

  #undef _WIN32_WINNT

  #define _WIN32_WINNT 0x0501

  #include <psapi.h>

#endif

to:

#elif NTA_PLATFORM_win32
//We only run on XP/2003 and above
  #undef _WIN32_WINNT
  #define _WIN32_WINNT 0x0501

  #include <psapi.h>

  #pragma comment(lib, "psapi.lib")
#endif

(i.e. add #pragma to "psapi.lib")

in /nupic-master/nta/engine/RegionImplFactory.cpp

#elif defined(NTA_PLATFORM_win32)
  const char * filename = "cpp_region.dll";

#endif

to:

#elif defined(NTA_PLATFORM_win32)
  const char * filename = "libcpp_region.dll";

#endif

(CMake generates same prefix to both Unix and Win32 libraries)

in any file where you found:

#include <unistd.h>

replace to:

#ifdef WIN32
  #include <windows.h>
#else
  #include <unistd.h>
#endif

in any file where you found env::get to get environment paths replace the path separator like this:

found = Env::get("HOMEPATH", homePath);

std::replace(homePath.begin(), homePath.end(), '\\', '/');

in C:/Python2.7/include/pyconfig.h

replace:

pragma comment(lib,"python27_d.lib")

to:

pragma comment(lib,"python27.lib")

("python27_d.lib" is a library used for debug in Python)

and delete or hide PY_DEBUG directive: #ifdef _DEBUG //# define Py_DEBUG #endif

Building with CMake

When generate choose Visual Studio 11 (i.e. 2012)