how to build single library file and some issues about tensorflow-windows-wheel HOT 12 OPEN

follow https://www.tensorflow.org/install/install_sources_windows to prepare the environment.

git clone https://github.com/tensorflow/tensorflow.git -b v1.11.0-rc1
cd tensorflow
python ./configure.py
...
bazel build --config=opt --config=cuda //tensorflow:libtensorflow_cc.so

You will get the libtensorflow_cc.so in tensorflow\bazel-out\x64_windows-opt\bin\tensorflow.

libtensorflow_cc.so is a dll, gen the .lib from it and link it and look if it works or not.

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Thank you for your quick response. Note that I have already built the library that way. My problem is that the .lib file it produces is much smaller than your produced by cmake. And I can not properly link a simple program with this smaller lib while I have no problems with yours. The dll (so) files are about the same size though. Did you do something in your cmake build to have a single tensorflow.lib (not tensorflow.dll) that you would need to link against any program

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I think in your cmake you have CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS which is probably why it is much larger than mine and also good for linking. If I do a
dumpbin /exports libtensorflow_cc.so
on the bazel created so, I get much less exported symbols than
dumpbin /exports tensorflow.dll
on your dll.

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Maybe use --config=monolithic and https://github.com/tensorflow/tensorflow/blob/v1.10.0/tensorflow/contrib/cmake/tools/create_def_file.py to gen shared lib from static lib is a way to work.

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@fo40225 With this process can you assign a specific GPU on windows using tensorflow_cc.dll?

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@ttdd11
tensorflow/tensorflow@0c8deb2
The instruction in commit message may work, I haven't try it.

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@fo40225 These look they they are for tensorflow.dll not tensorflow_cc.dll. The issue I'm having is that I can't assign a graph to a specific gpu. Have you been able to achieve this?

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@fo40225 But generally to make the tensorflow_cc.dll and .lib you are using the bazel build instructions. How are you exporting the correct symbols?

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@ttdd11 Using the bazel build instructions above only generate the .dll with no .lib file and .dll contains only C symbol not C++.

The commit not only fix the libtensorflow.so (C lib) but also fix the libtensorflow_cc.so (C++ lib).

Just try to checkout the commit and bazel build --config=opt //tensorflow:tensorflow_cc.

good luck

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@fo40225 Have you been able to set device in the c_api? I think this have been broken for about a year.

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@ttdd11 try to use the file in https://github.com/fo40225/tensorflow-windows-wheel/tree/master/1.10.0/cpp to see if it helps or not

or just wait google totally fix building cpp lib of tensorflow on windows tensorflow/tensorflow#26152

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@fo40225 I need to build with CUDA 10 for rtx support. How do I test the branch in the second link? doesn't look like its in yet.

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