Small fixes for gcc

src/ifcconvert/validate_wall_connectivity.cpp

@@ -135,7 +135,7 @@ void fix_wallconnectivity(IfcParse::IfcFile& f, bool no_progress, bool quiet, bo
 
 					std::vector<Kernel_::FT> parameters;
 
-					std::transform(vertices(x_poly).begin(), vertices(x_poly).end(), std::back_inserter(parameters), [&P0, D](auto& v) {
+					std::transform(vertices(x_poly).begin(), vertices(x_poly).end(), std::back_inserter(parameters), [&P0, D](cgal_vertex_descriptor_t& v) {
 						return (v->point() - P0) * D;
 					});
 

src/ifcconvert/validation_utils.h

@@ -15,8 +15,8 @@
 
 template <typename T>
 T enlarge(const T& t, double d = 1.e-5) {
-	T::NT min[3];
-	T::NT max[3];
+	typename T::NT min[3];
+	typename T::NT max[3];
 	for (int i = 0; i < t.dimension(); ++i) {
 		min[i] = t.min_coord(i) - d;
 		max[i] = t.max_coord(i) + d;