diff --git a/Quasi-Engine.pro b/Quasi-Engine.pro
index bbcd318..5be7130 100644
--- a/Quasi-Engine.pro
+++ b/Quasi-Engine.pro
@@ -5,3 +5,9 @@ SUBDIRS += src
 contains(BUILD_EXAMPLES, 1) {
     SUBDIRS += examples demos
 }
+unix {
+	QMAKE_CXXFLAGS += -I/usr/local/include
+	LIBS += -L/usr/local/lib
+	INCLUDEPATH += -I/usr/local/include
+}
+
diff --git a/src/polygon.cpp b/src/polygon.cpp
index 9cf2c28..36b6823 100644
--- a/src/polygon.cpp
+++ b/src/polygon.cpp
@@ -40,7 +40,14 @@ void Polygon::updateShape(qreal penWidth)
     // it's own boundingRect and we have to fix it somehow.
     Q_UNUSED(penWidth);
 
-    b2Vec2 polygon[m_points.count()];
+/* avoid error:
+Variable length array of non-POD element type 'b2Vec2' 
+TODO: rewrite using vectors
+*/
+
+//    b2Vec2 polygon[m_points.count()];
+    b2Vec2 *polygon = new b2Vec2[m_points.count()];
+
     qreal xOffset = x() - parentItem()->width() / 2.0;
     qreal yOffset = y() - parentItem()->height() / 2.0;
 
@@ -58,4 +65,6 @@ void Polygon::updateShape(qreal penWidth)
 
     b2PolygonShape *polygonShape = static_cast<b2PolygonShape*>(m_shape);
     polygonShape->Set(polygon, m_points.count());
+
+    delete [] polygon;
 }
diff --git a/src/polyline.cpp b/src/polyline.cpp
index 76025ea..cd0e4a6 100644
--- a/src/polyline.cpp
+++ b/src/polyline.cpp
@@ -54,7 +54,14 @@ void Polyline::updateShape(qreal penWidth)
     // it's own boundingRect and we have to fix it somehow.
     Q_UNUSED(penWidth);
 
-    b2Vec2 polyline[m_points.count()];
+/*
+avoid error:
+Variable length array of non-POD element type 'b2Vec2' 
+TODO: rewrite using vector
+*/
+//   b2Vec2 polyline[m_points.count()];
+    b2Vec2 *polyline = new b2Vec2[m_points.count()];
+
     qreal xOffset = x() - parentItem()->width() / 2.0;
     qreal yOffset = y() - parentItem()->height() / 2.0;
 
@@ -80,6 +87,8 @@ void Polyline::updateShape(qreal penWidth)
         chainShape->CreateLoop(polyline, m_points.count());
     else
         chainShape->CreateChain(polyline, m_points.count());
+
+    delete [] polyline;
 }
 
 void Polyline::setLoop(const bool &loop)
diff --git a/src/src.pro b/src/src.pro
index d2833e0..072534b 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -97,3 +97,9 @@ qmlpluginfiles.files += \
     $$OUT_PWD/imports/QuasiGame/*
 
 INSTALLS += target qmlpluginfiles
+
+unix {
+	QMAKE_CXXFLAGS += -I/usr/local/include
+	LIBS += -L/usr/local/lib
+	INCLUDEPATH += -I/usr/local/include
+}