[Python3.6] Build error in eager_py_layer.cc

[pmajchrzak]

Commit: 157c1a2 causes make error.
The error is located in the file: paddle_paddle/paddle/fluid/pybind/eager_py_layer.cc

Error message:

[ 58%] Building CXX object paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/eager_py_layer.cc.o
/repos/paddle_paddle/paddle/fluid/pybind/eager_py_layer.cc:456:50: error: ISO C++ forbids converting a string constant to 'char*' [-Werror=write-strings]
     {nullptr, nullptr, nullptr, nullptr, nullptr}};
                                                  ^
/repos/paddle_paddle/paddle/fluid/pybind/eager_py_layer.cc:456:50: error: ISO C++ forbids converting a string constant to 'char*' [-Werror=write-strings]
/repos/paddle_paddle/paddle/fluid/pybind/eager_py_layer.cc:456:50: error: ISO C++ forbids converting a string constant to 'char*' [-Werror=write-strings]
/repos/paddle_paddle/paddle/fluid/pybind/eager_py_layer.cc:456:50: error: ISO C++ forbids converting a string constant to 'char*' [-Werror=write-strings]
cc1plus: all warnings being treated as errors
paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/build.make:145: recipe for target 'paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/eager_py_layer.cc.o' failed
make[2]: *** [paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/eager_py_layer.cc.o] Error 1
CMakeFiles/Makefile2:473845: recipe for target 'paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/all' failed
make[1]: *** [paddle/fluid/pybind/CMakeFiles/paddle_eager.dir/all] Error 2 

PaddlePaddle CMAKE parameters:

-DCMAKE_BUILD_TYPE=Release -DWITH_GPU=OFF -DWITH_MKLDNN=ON -DWITH_TESTING=ON -DWITH_PROFILER=OFF -DWITH_STYLE_CHECK=OFF -DON_INFER=ON -DWITH_INFERENCE_API_TEST=ON -DPY_VERSION=3.6

CC: @jczaja @wozna @lidanqing-intel

[paddle-bot-old]

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[baoachun]

Hi @wanghuancoder, Please deal with the compilation error, thank you!

[lidanqing-intel]

@wozna Hi, does your PR actually fixed this issue already.