opencv clapack and visual studio

[anony1]

hi
Hi I am trying to run the code of a visual object tracker that is written in c/c++ and is advised to configure using opencv 2.1 and lapack .however I am trying to run the code using visual studio 2015 ,open cv 3.0 or 3.1 inside visual studio with clapack. Below are the errors i am getting.

  Error LNK2019 unresolved external symbol _dpotrf_ referenced in function _main tracker

Error LNK2019 unresolved external symbol _dgeqrf_ referenced in function _main tracker

Error LNK2019 unresolved external symbol _dorgqr_ referenced in function _main tracker 

Now i think it is due to name mangling as the _ underscore before the function is shown ,but the thing is clapack.h file has the function declared using extern c . i have used all the necessary libraries and include folder to best of my knowledge.Any help would be greatly appreciated