error: constexpr function return is non-constant

[ooFormalinoo]

I use tf1.13,cuda10.0 and g++-4.8,and my os is ubuntu16.04.However,when I run python run.py --help,some errors occur：

/usr/local/lib/python3.5/dist-packages/tensorflow/include/absl/strings/string_view.h(496):
error: constexpr function return is non-constant

/usr/local/lib/python3.5/dist-packages/tensorflow/include/google/protobuf/arena_impl.h(55):
warning: integer conversion resulted in a change of sign

/usr/local/lib/python3.5/dist-packages/tensorflow/include/google/protobuf/arena_impl.h(309):
warning: integer conversion resulted in a change of sign

/usr/local/lib/python3.5/dist-packages/tensorflow/include/google/protobuf/arena_impl.h(310):
warning: integer conversion resulted in a change of sign

1 error detected in the compilation of "/tmp/tmpxft_00003790_00000000-6_backward_warp_op.cu.cpp1.ii".

Traceback (most recent call last):
File "/home/kjq/UnFlow/src/e2eflow/ops.py", line 59, in
op_lib = tf.load_op_library(lib_path)
File "/usr/local/lib/python3.5/dist-packages/tensorflow/python/framework/load_library.py", line 61, in load_op_library
lib_handle = py_tf.TF_LoadLibrary(library_filename)
tensorflow.python.framework.errors_impl.NotFoundError: ./backward_warp_op.so: cannot open shared object file: No such file or directory

During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "run.py", line 7, in
from e2eflow.core.train import Trainer
File "/home/kjq/UnFlow/src/e2eflow/core/train.py", line 11, in
from . import util
File "/home/kjq/UnFlow/src/e2eflow/core/util.py", line 2, in
from ..ops import downsample as downsample_ops
File "/home/kjq/UnFlow/src/e2eflow/ops.py", line 61, in
compile(n)
File "/home/kjq/UnFlow/src/e2eflow/ops.py", line 43, in compile
subprocess.check_output(nvcc_cmd, shell=True)
File "/usr/lib/python3.5/subprocess.py", line 626, in check_output
**kwargs).stdout
File "/usr/lib/python3.5/subprocess.py", line 708, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command 'nvcc -std=c++11 -c -o backward_warp_op.cu.o backward_warp_op.cu.cc -I/usr/local/lib/python3.5/dist-packages/tensorflow/include -D_GLIBCXX_USE_CXX11_ABI=0 -L/usr/local/lib/python3.5/dist-packages/tensorflow -ltensorflow_framework -D GOOGLE_CUDA=1 -x cu -Xcompiler -fPIC -I /usr/local --expt-relaxed-constexpr' returned non-zero exit status 1

could you give some advices ？

[chulie9710]

hello, I have the same issue,
Did you solve the problem?