A few fixes (#3250)

src/ngraph/op/fused_op_tbl.hpp

@@ -17,6 +17,11 @@
 // This collection contains one entry for each fused op.
 //
 
+#ifndef NGRAPH_OP
+#warning "NGRAPH_OP not defined"
+#define NGRAPH_OP(x, y)
+#endif
+
 NGRAPH_OP(Clamp, ngraph::op)
 NGRAPH_OP(ConvolutionBias, ngraph::op)
 NGRAPH_OP(ConvolutionBiasAdd, ngraph::op)

src/ngraph/op/op_tbl.hpp

@@ -46,7 +46,7 @@
 // It's that easy. You can use this for fun and profit.
 
 #ifndef NGRAPH_OP
-#error "NGRAPH_OP not defined"
+#warning "NGRAPH_OP not defined"
 #define NGRAPH_OP(x, y)
 #endif
 

src/ngraph/runtime/cpu/kernel/concat.hpp

@@ -49,7 +49,7 @@ namespace ngraph
                         static_cast<ElementType*>(output), out_dims);
 
                     Eigen::array<Eigen::Index, Rank> in_dims, concat_pos;
-                    concat_pos.fill(0);
+                    concat_pos.fill(static_cast<Eigen::Index>(0));
 
                     for (int i = 0; i < input_shapes.size(); i++)
                     {

src/ngraph/type/bfloat16.hpp

@@ -18,6 +18,7 @@
 
 #include <cmath>
 #include <iostream>
+#include <limits>
 #include <memory>
 #include <string>
 #include <vector>