Compile glog with WITH_GFLAGS=ON

Also initialize glog after gflags in Util.cpp initMain()

Change-Id: I09ff062b462aa76d9f7b5f97e883b92939e6dcb2

cmake/external/glog.cmake

@@ -29,12 +29,13 @@ INCLUDE_DIRECTORIES(${GLOG_INCLUDE_DIR})
 ExternalProject_Add(
     glog
     ${EXTERNAL_PROJECT_LOG_ARGS}
+    DEPENDS gflags
     GIT_REPOSITORY  "https://github.com/google/glog.git"
     PREFIX          ${GLOG_SOURCES_DIR}
     UPDATE_COMMAND  ""
     CMAKE_ARGS      -DCMAKE_INSTALL_PREFIX=${GLOG_INSTALL_DIR}
     CMAKE_ARGS      -DCMAKE_POSITION_INDEPENDENT_CODE=ON
-    CMAKE_ARGS      -DWITH_GFLAGS=OFF
+    CMAKE_ARGS      -DWITH_GFLAGS=ON
     CMAKE_ARGS      -DBUILD_TESTING=OFF
 )
 

paddle/utils/Util.cpp

@@ -144,20 +144,20 @@ void runInitFunctions() {
 }
 
 void initMain(int argc, char** argv) {
-  initializeLogging(argc, argv);
   installLayerStackTracer();
   std::string line;
   for (int i = 0; i < argc; ++i) {
     line += argv[i];
     line += ' ';
   }
-  LOG(INFO) << "commandline: " << line;
 
 #ifndef GFLAGS_GFLAGS_H_
   namespace gflags = google;
 #endif
 
   gflags::ParseCommandLineFlags(&argc, &argv, true);
+  initializeLogging(argc, argv);
+  LOG(INFO) << "commandline: " << line;
   CHECK_EQ(argc, 1) << "Unknown commandline argument: " << argv[1];
 
   installProfilerSwitch();