fix mac build

paddle/fluid/framework/details/multi_devices_graph_builder.cc

@@ -333,7 +333,7 @@ std::unique_ptr<Graph> MultiDevSSAGraphBuilder::Apply(
    * Only variables should be the leaves of graph.
    */
   AddOutputToLeafOps(&result);
-  return std::move(graph);
+  return graph;
 }
 
 bool MultiDevSSAGraphBuilder::IsSparseGradient(const std::string &og) const {

paddle/fluid/framework/details/ssa_graph_checker.h

@@ -31,7 +31,7 @@ class SSAGraghBuilderWithChecker : public SSAGraphBuilder {
   std::unique_ptr<Graph> Apply(std::unique_ptr<Graph> graph) const override {
     auto new_graph = builder_->Apply(std::move(graph));
     PADDLE_ENFORCE(IsValidGraph(new_graph.get()));
-    return std::move(new_graph);
+    return new_graph;
   }
 
   int GetVarDeviceID(const std::string& var_name) const override {

paddle/fluid/framework/details/ssa_graph_printer.h

@@ -53,7 +53,7 @@ class SSAGraghBuilderWithPrinter : public SSAGraphBuilder {
   std::unique_ptr<Graph> Apply(std::unique_ptr<Graph> graph) const override {
     auto new_graph = builder_->Apply(std::move(graph));
     printer_->Print(*new_graph, stream_ref_);
-    return std::move(new_graph);
+    return new_graph;
   }
 
   int GetVarDeviceID(const std::string& var_name) const override {

paddle/fluid/framework/ir/graph.cc

@@ -21,6 +21,7 @@ namespace framework {
 
 // NOTE(paddle-dev): This graph contains circle.
 Graph::Graph(const ProgramDesc &program) : program_(program) {
+  VLOG(3) << "block in program:" << program_.Size();
   std::unordered_map<std::string, VarDesc *> all_vars;
   for (auto *var : program.Block(0).AllVars()) {
     all_vars.emplace(var->Name(), var);

paddle/fluid/inference/CMakeLists.txt

@@ -38,4 +38,6 @@ if(WITH_TESTING)
   # both tests/book and analysis depends the models that generated by python/paddle/fluid/tests/book
   add_subdirectory(tests/book)
 endif()
-add_subdirectory(api)
+if(NOT APPLE)
+  add_subdirectory(api)
+endif()