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Tons of warnings about using-declaration in utils/Flags.h #3277

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wangkuiyi opened this issue Aug 5, 2017 · 3 comments
Closed

Tons of warnings about using-declaration in utils/Flags.h #3277

wangkuiyi opened this issue Aug 5, 2017 · 3 comments
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@wangkuiyi

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@wangkuiyi
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The building log is full of

[10:40:34]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:34]W:	 [Step 1/1] 
[10:40:34] :	 [Step 1/1] [ 86%] Linking CXX executable test_Evaluator
[10:40:35] :	 [Step 1/1] [ 86%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ConvUnify.dir/LayerGradUtil.cpp.o
[10:40:37] :	 [Step 1/1] [ 86%] Built target test_ExecViaCpu
[10:40:37] :	 [Step 1/1] Scanning dependencies of target test_WarpCTCLayer
[10:40:37] :	 [Step 1/1] [ 86%] Building CXX object paddle/gserver/tests/CMakeFiles/test_WarpCTCLayer.dir/test_WarpCTCLayer.cpp.o
[10:40:37] :	 [Step 1/1] Scanning dependencies of target test_CRFLayerGrad
[10:40:37] :	 [Step 1/1] [ 86%] Building CXX object paddle/gserver/tests/CMakeFiles/test_CRFLayerGrad.dir/test_CRFLayerGrad.cpp.o
[10:40:37] :	 [Step 1/1] [ 87%] Linking CXX executable test_BatchNorm
[10:40:38]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:38]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:38]W:	 [Step 1/1] 
[10:40:39] :	 [Step 1/1] [ 87%] Built target test_perturbation
[10:40:39] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_CRFLayerGrad.dir/LayerGradUtil.cpp.o
[10:40:39] :	 [Step 1/1] [ 87%] Built target test_argument
[10:40:39] :	 [Step 1/1] Scanning dependencies of target test_DetectionOutput
[10:40:39] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_DetectionOutput.dir/test_DetectionOutput.cpp.o
[10:40:40] :	 [Step 1/1] [ 87%] Built target test_GpuProfiler
[10:40:40] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_DetectionOutput.dir/LayerGradUtil.cpp.o
[10:40:40] :	 [Step 1/1] [ 87%] Built target test_SparseMatrix
[10:40:40]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40] :	 [Step 1/1] Scanning dependencies of target test_ProtoDataProvider
[10:40:40] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ProtoDataProvider.dir/test_ProtoDataProvider.cpp.o
[10:40:40] :	 [Step 1/1] [ 87%] Linking CXX executable test_WarpCTCLayer
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:40]W:	 [Step 1/1] 
[10:40:40] :	 [Step 1/1] [ 87%] Linking CXX executable test_ConvUnify
[10:40:41]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:41]W:	 [Step 1/1] 
[10:40:41] :	 [Step 1/1] [ 87%] Built target test_common
[10:40:42] :	 [Step 1/1] Scanning dependencies of target test_PriorBox
[10:40:42] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_PriorBox.dir/test_PriorBox.cpp.o
[10:40:42] :	 [Step 1/1] Scanning dependencies of target test_ConvTrans
[10:40:42] :	 [Step 1/1] [ 87%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ConvTrans.dir/test_ConvTrans.cpp.o
[10:40:42] :	 [Step 1/1] [ 87%] Built target test_Evaluator
[10:40:42] :	 [Step 1/1] [ 88%] Building CXX object paddle/gserver/tests/CMakeFiles/test_PriorBox.dir/LayerGradUtil.cpp.o
[10:40:44] :	 [Step 1/1] [ 88%] Built target test_BatchNorm
[10:40:44] :	 [Step 1/1] Scanning dependencies of target test_RecurrentGradientMachine
[10:40:44] :	 [Step 1/1] [ 88%] Building CXX object paddle/gserver/tests/CMakeFiles/test_RecurrentGradientMachine.dir/test_RecurrentGradientMachine.cpp.o
[10:40:44] :	 [Step 1/1] [ 88%] Linking CXX executable test_ProtoDataProvider
[10:40:44]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:44]W:	 [Step 1/1] 
[10:40:44]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:44]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45] :	 [Step 1/1] Scanning dependencies of target test_ActivationGrad
[10:40:45] :	 [Step 1/1] [ 88%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ActivationGrad.dir/test_ActivationGrad.cpp.o
[10:40:45] :	 [Step 1/1] [ 88%] Linking CXX executable test_CRFLayerGrad
[10:40:45]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:45]W:	 [Step 1/1] 
[10:40:45] :	 [Step 1/1] [ 88%] Linking CXX executable test_DetectionOutput
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:46]W:	 [Step 1/1] 
[10:40:46] :	 [Step 1/1] [ 88%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ConvTrans.dir/LayerGradUtil.cpp.o
[10:40:46] :	 [Step 1/1] [ 89%] Building CXX object paddle/gserver/tests/CMakeFiles/test_ActivationGrad.dir/LayerGradUtil.cpp.o
[10:40:48]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:48]W:	 [Step 1/1] 
[10:40:48] :	 [Step 1/1] [ 89%] Built target test_WarpCTCLayer
[10:40:48] :	 [Step 1/1] Scanning dependencies of target test_LinearChainCRF
[10:40:48] :	 [Step 1/1] [ 89%] Building CXX object paddle/gserver/tests/CMakeFiles/test_LinearChainCRF.dir/test_LinearChainCRF.cpp.o
[10:40:48] :	 [Step 1/1] [ 89%] Built target test_ConvUnify
[10:40:48] :	 [Step 1/1] [ 89%] Linking CXX executable test_PriorBox
[10:40:48] :	 [Step 1/1] Scanning dependencies of target test_MultinomialSampler
[10:40:49] :	 [Step 1/1] [ 89%] Building CXX object paddle/gserver/tests/CMakeFiles/test_MultinomialSampler.dir/test_MultinomialSampler.cpp.o
[10:40:49] :	 [Step 1/1] [ 89%] Linking CXX executable test_RecurrentGradientMachine
[10:40:49] :	 [Step 1/1] Scanning dependencies of target test_PyDataProvider
[10:40:49] :	 [Step 1/1] [ 89%] Building CXX object paddle/gserver/tests/CMakeFiles/test_PyDataProvider.dir/test_PyDataProvider.cpp.o
[10:40:51] :	 [Step 1/1] [ 89%] Linking CXX executable test_MultinomialSampler
[10:40:51]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51] :	 [Step 1/1] [ 89%] Linking CXX executable test_LinearChainCRF
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:51]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:51]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
[10:40:52]W:	 [Step 1/1] 
[10:40:52] :	 [Step 1/1] [ 90%] Linking CXX executable test_ActivationGrad
[10:40:52] :	 [Step 1/1] [ 90%] Linking CXX executable test_ConvTrans
[10:40:52] :	 [Step 1/1] [ 90%] Built target test_ProtoDataProvider
[10:40:52] :	 [Step 1/1] [ 90%] Built target test_CRFLayerGrad
[10:40:53] :	 [Step 1/1] Scanning dependencies of target test_NetworkCompare
[10:40:53] :	 [Step 1/1] [ 91%] Linking CXX executable test_PyDataProvider
[10:40:53] :	 [Step 1/1] [ 91%] Building CXX object paddle/gserver/tests/CMakeFiles/test_NetworkCompare.dir/test_NetworkCompare.cpp.o
[10:40:53] :	 [Step 1/1] Scanning dependencies of target test_RecurrentLayer
[10:40:53] :	 [Step 1/1] [ 92%] Building CXX object paddle/gserver/tests/CMakeFiles/test_RecurrentLayer.dir/test_RecurrentLayer.cpp.o
[10:40:54] :	 [Step 1/1] [ 92%] Built target test_DetectionOutput
[10:40:54] :	 [Step 1/1] Scanning dependencies of target test_PyDataProvider2
[10:40:54] :	 [Step 1/1] [ 92%] Building CXX object paddle/gserver/tests/CMakeFiles/test_PyDataProvider2.dir/test_PyDataProvider2.cpp.o
[10:40:56] :	 [Step 1/1] [ 92%] Built target test_PriorBox
[10:40:57]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(362): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/build/third_party/install/glog/include/glog/logging.h(369): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57] :	 [Step 1/1] Scanning dependencies of target test_LayerGrad
[10:40:57] :	 [Step 1/1] [ 92%] Linking CXX executable test_RecurrentLayer
[10:40:57] :	 [Step 1/1] [ 92%] Building CXX object paddle/gserver/tests/CMakeFiles/test_LayerGrad.dir/test_LayerGrad.cpp.o
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(27): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(28): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(31): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(32): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(40): warning: using-declaration ignored -- it refers to the current namespace
[10:40:57]W:	 [Step 1/1] 
[10:40:57]W:	 [Step 1/1] /paddle/paddle/utils/Flags.h(42): warning: using-declaration ignored -- it refers to the current namespace
@wangkuiyi wangkuiyi self-assigned this Aug 5, 2017
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wangkuiyi commented Aug 5, 2017 •
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Close this as there has been one #1117

@wangkuiyi wangkuiyi mentioned this issue Aug 5, 2017
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wangkuiyi commented Aug 5, 2017 •
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Those warnings about utils/Flags.h are all about DECLARE_string:

DECLARE_string(nics);
DECLARE_string(rdma_tcp);
DECLARE_string(comment);
...

The same case with those warnings about glog/logging.h:

DECLARE_string(log_dir);
DECLARE_string(log_link);

Right above these two lines, there is the definition of DECLARE_string:

// Special case for string, because we have to specify the namespace
// std::string, which doesn't play nicely with our FLAG__namespace hackery.
#define DECLARE_string(name)                                            \
  namespace fLS {                                                       \
    extern GOOGLE_GLOG_DLL_DECL std::string& FLAGS_##name;              \
  }                                                                     \
  using fLS::FLAGS_##name
#endif

But don't be fooled -- above macro definition was surrounded by #ifndef DECLARE_VARIABLE, and this condition doesn't satisfy because glog/logging.h includes gflags/gflags, which in turn includes gflags/gflags_declare.h, which defines macro DECLARE_VARIABLE and DECLARE_string as:

#define DECLARE_string(name) \
  /* We always want to import declared variables, dll or no */ \
  namespace fLS { \
  using ::fLS::clstring; \
  extern GFLAGS_DLL_DECLARE_FLAG ::fLS::clstring& FLAGS_##name; \
  } \
  using fLS::FLAGS_##name

It looks to me that it's using ::fLS::clstring; \ who caused the warning.

Above source code is the most recent version of gflags https://github.com/gflags/gflags/blob/master/src/gflags_declare.h.in#L147 downloaded by our cmake/external/gflags.cmake file.

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This PR provides more contexts than #1117 , so open it and close #1117

@wangkuiyi wangkuiyi reopened this Aug 5, 2017
This was referenced Aug 5, 2017
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@wangkuiyi wangkuiyi mentioned this issue Nov 12, 2017
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@jacquesqiao jacquesqiao mentioned this issue Nov 24, 2017
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