I want to use LIBSVM on windows 7 with MATLAB R2015b. I am using Libsvm 3.21 .I have downloaded and installed Microsoft Visual C++ 2010 Professional SP1 and windows SDK 7.1 , which is one of the supported compilers for R2015b. However when i execute make.m file ,i get message ' If make.m fails, please check README about detailed instructions'. When i type mex -setup, i get the message ' No supported compiler or SDK was found. You can install the freely available MinGW-w64 C/C++ compiler; see Install MinGW-w64 Compiler. For more options, see http://www.mathworks.com/support/compilers/R2015b/win64.html'. Earlier on 32 bit windows it was working fine with Microsoft Visual C++ 2010 Express compiler and Wndows SDK 7.1. Please help asap.