change
include_directories(C:\Program Files (x86)\GnuWin32\include\)
to
include_directories(C://Program Files (x86)//GnuWin32//include//dlib)
change
include_directories(C:\Program Files (x86)\GnuWin32\include\)
to
include_directories(C://Program Files (x86)//GnuWin32//include//dlib)