COMP: try to detect cblas when needed by shark

CMake/FindShark.cmake

@@ -118,12 +118,22 @@ else()
   set(SHARK_USE_DYNLIB 0)
 endif()
 
+if(SHARK_USE_CBLAS AND SHARK_USE_DYNLIB)
+  set(REQUIRED_CBLAS_LIB CBLAS_LIBRARY)
+  find_library(CBLAS_LIBRARY NAMES cblas)
+else()
+  set(REQUIRED_CBLAS_LIB)
+endif()
+
 INCLUDE(${CMAKE_ROOT}/Modules/FindPackageHandleStandardArgs.cmake)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(Shark
-  REQUIRED_VARS SHARK_LIBRARY SHARK_INCLUDE_DIR
+  REQUIRED_VARS SHARK_LIBRARY SHARK_INCLUDE_DIR ${REQUIRED_CBLAS_LIB}
   VERSION_VAR SHARK_VERSION_STRING)
 
 if(SHARK_FOUND)
   set(SHARK_INCLUDE_DIRS ${SHARK_INCLUDE_DIR} ${Boost_INCLUDE_DIR} )
   set(SHARK_LIBRARIES ${SHARK_LIBRARY} ${Boost_LIBRARIES} )
+  if(REQUIRED_CBLAS_LIB)
+    set(SHARK_LIBRARIES ${SHARK_LIBRARIES} ${CBLAS_LIBRARY})
+  endif()
 endif()