ADD: added other eigen lib

libs/eigen/cmake/FindAccelerate.cmake

@@ -0,0 +1,28 @@
+if (Accelerate_INCLUDES AND Accelerate_LIBRARIES)
+  set(Accelerate_FIND_QUIETLY TRUE)
+endif ()
+
+find_path(Accelerate_INCLUDES
+  NAMES
+  Accelerate.h
+  PATHS $ENV{ACCELERATEDIR}
+)
+
+find_library(Accelerate_LIBRARIES Accelerate PATHS $ENV{ACCELERATEDIR})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Accelerate DEFAULT_MSG
+                                  Accelerate_INCLUDES Accelerate_LIBRARIES)
+
+if (Accelerate_FOUND)
+  get_filename_component(Accelerate_PARENTDIR ${Accelerate_INCLUDES} DIRECTORY)
+
+  file(GLOB_RECURSE SparseHeader ${Accelerate_PARENTDIR}/Sparse.h)
+
+  if ("${SparseHeader}" STREQUAL "")
+    message(STATUS "Accelerate sparse matrix support was not found. Accelerate has been disabled.")
+    set(Accelerate_FOUND FALSE)
+  endif ()
+endif ()
+
+mark_as_advanced(Accelerate_INCLUDES Accelerate_LIBRARIES)