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# Revision history [back]

### lsd_lines_extraction.cpp (opencv_contrib)

Hi, i compiled OpenCV and Contrib with examples. ( Windows -Visual Studio 2015 )

when i try to run lsd_lines_extraction.cpp i get "OpenCV was built without features2d module"

i modified line 44 #ifdef HAVE_OPENCV_FEATURES2D -> #if 1 and solved the problem.

the question is why i needed to modify the source ? probably i am doing something wrong in cmake or Visual Studio but maybe someone lead me to find my way.

i modified line 44 #ifdef HAVE_OPENCV_FEATURES2D -> #if 1 and solved the problem.