Make enforce target (#5889)

* make enforce a target and dependent on nccl when gpu is enabled

* add some more dependency

paddle/memory/CMakeLists.txt

 add_subdirectory(detail)
 
-cc_library(memory SRCS memory.cc DEPS place)
+cc_library(memory SRCS memory.cc DEPS place enforce)
 cc_library(memcpy SRCS memcpy.cc)
 
 cc_library(paddle_memory

paddle/platform/CMakeLists.txt

-cc_library(cpu_info SRCS cpu_info.cc DEPS gflags glog)
+if(WITH_GPU)
+  cc_library(enforce SRCS enforce.cc DEPS nccl)
+else()
+  cc_library(enforce SRCS enforce.cc)
+endif()
+cc_test(enforce_test SRCS enforce_test.cc DEPS stringpiece enforce)
+
+cc_library(cpu_info SRCS cpu_info.cc DEPS gflags glog enforce)
 cc_test(cpu_info_test SRCS cpu_info_test.cc DEPS cpu_info)
 
-nv_library(gpu_info SRCS gpu_info.cc DEPS gflags glog)
+nv_library(gpu_info SRCS gpu_info.cc DEPS gflags glog enforce)
 
-cc_library(place SRCS place.cc)
+cc_library(place SRCS place.cc DEPS enforce)
 cc_test(place_test SRCS place_test.cc DEPS place glog gflags)
 
 add_subdirectory(dynload)
 
-cc_test(enforce_test SRCS enforce_test.cc DEPS stringpiece)
-
 IF(WITH_GPU)
     set(GPU_CTX_DEPS dynload_cuda dynamic_loader)
 ELSE()

paddle/platform/dynload/CMakeLists.txt

-cc_library(dynamic_loader SRCS dynamic_loader.cc DEPS glog gflags)
+cc_library(dynamic_loader SRCS dynamic_loader.cc DEPS glog gflags enforce)
 nv_library(dynload_cuda SRCS cublas.cc cudnn.cc curand.cc nccl.cc
         DEPS dynamic_loader nccl)

paddle/platform/enforce.cc

+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License. */
+
+#include "paddle/platform/enforce.h"
+
+namespace paddle {
+namespace platform {}  // namespace platform
+}  // namespace paddle

paddle/platform/enforce.h

@@ -49,7 +49,6 @@ limitations under the License. */
 namespace paddle {
 namespace platform {
 
-namespace {
 #ifdef __GNUC__
 inline std::string demangle(std::string name) {
   int status = -4;  // some arbitrary value to eliminate the compiler warning
@@ -60,7 +59,6 @@ inline std::string demangle(std::string name) {
 #else
 inline std::string demangle(std::string name) { return name; }
 #endif
-}
 
 struct EnforceNotMet : public std::exception {
   std::exception_ptr exp_;