vcvarsall.bat x86
CL /I C:\OpenSSL-Win32\include /INCREMENTAL bmpow.c /MT /link /DLL /OUT:bmpow32.dll /LIBPATH:"C:\OpenSSL-Win32\lib" libeay32.lib ws2_32.lib

C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat x86
CL /I C:\OpenSSL-Win32\include /INCREMENTAL bmpow.c /MT /link /DLL /OUT:bmpow32.dll /LIBPATH:"C:\OpenSSL-Win32\lib" libeay32.lib ws2_32.lib

Use full path to vcvarsall
Use full path to vcvarsall
