Merge pull request #12 from jcarpent/devel

Fix bug in multiple dynamic link of the lib

Author: jcarpent

CMakeLists.txt

@@ -108,7 +108,6 @@ ENDFOREACH(header)
 SET(${PROJECT_NAME}_SOURCES
   src/exception.cpp
   src/eigenpy.cpp
-  src/details.cpp
   src/angle-axis.cpp
   src/quaternion.cpp
 )

src/details.cpp

@@ -35,31 +35,39 @@ namespace eigenpy
   template <> struct NumpyEquivalentType<int>     { enum { type_code = NPY_INT    };};
   template <> struct NumpyEquivalentType<float>   { enum { type_code = NPY_FLOAT  };};
 
+  namespace bp = boost::python;
+
   struct PyMatrixType
   {
-    boost::python::object pyMatrixType;
-    boost::python::object pyModule;
 
-    PyMatrixType() 
+    static PyMatrixType & getInstance()
     {
-      pyModule = boost::python::import("numpy");
-      pyMatrixType = pyModule.attr("matrix");
+      static PyMatrixType instance;
+      return instance;
     }
-    operator boost::python::object () { return pyMatrixType; }
 
-    boost::python::object make(PyArrayObject* pyArray, bool copy = false)
+    operator bp::object () { return pyMatrixType; }
+
+    bp::object make(PyArrayObject* pyArray, bool copy = false)
     { return make((PyObject*)pyArray,copy); }
-    boost::python::object make(PyObject* pyObj, bool copy = false)
+    bp::object make(PyObject* pyObj, bool copy = false)
     {
       boost::python::object m
-	= pyMatrixType( boost::python::object(boost::python::handle<>(pyObj)), 
-			boost::python::object(), copy );
+      = pyMatrixType(bp::object(bp::handle<>(pyObj)), bp::object(), copy);
       Py_INCREF(m.ptr());
       return m;
     }
-  };
 
-  extern PyMatrixType pyMatrixType;
+  protected:
+    PyMatrixType()
+    {
+      pyModule = boost::python::import("numpy");
+      pyMatrixType = pyModule.attr("matrix");
+    }
+
+    bp::object pyMatrixType;
+    bp::object pyModule;
+  };
 
   /* --- TO PYTHON -------------------------------------------------------------- */
   template< typename MatType,typename EquivalentEigenType >
@@ -78,7 +86,7 @@ namespace eigenpy
 
       MapNumpy<EquivalentEigenType>::map(pyArray) = mat;
 
-      return pyMatrixType.make(pyArray).ptr();
+      return PyMatrixType::getInstance().make(pyArray).ptr();
     }
   };