Building TensorFlow 2 with bazel 0.29.1 on Windows 10 fails - tensorflow

Question

Trying to compile TF 2.0 with Bazel, ends up in a failure.
I am struggling this issue for quite a while, looked it up online, but haven't found any solution to the exact problem. Several running configuration (with or w/o Cuda, with or w/o creating zip file, etc) eventually leading to the same failure.
System information:
OS Platform and Distribution (Windows 10)
TensorFlow installed from (source)
TensorFlow version: 2.0 (master branch on 07 Nov 2019, to be exact)
Python version: 3.7
Installed using virtualenv? pip? conda?: No
Bazel version (if compiling from source): 0.29.1
GCC/Compiler version (if compiling from source): 8.1.0
CUDA/cuDNN version: 10.0/7
GPU model and memory: GeForce GTX 1050 15.88 GB RAM
My actions:
1. git checkout master (in the TF git repo)
2. bazel clean
3. configure (all defaults except for python path and Cuda)
4. bazel build --config=cuda --define=no_tensorflow_py_deps=true tensorflow:tensorflow_cc.dll
Failure message:
ERROR: C:/users/shahar/git/tensorflow/tensorflow/core/BUILD:2537:1:
Executing genrule //tensorflow/core:version_info_gen failed (Exit 5)
LAUNCHER ERROR: Cannot launch process: "C:/Program
Files/WindowsApps/PythonSoftwareFoundation.Python.3.7_3.7.1520.0_x64__qbz5n2kfra8p0/python.exe"
C:\users\shahar_bazel_shahar\duchsbgv\execroot\org_tensorflow\bazel-out\x64_windows-opt\bin\tensorflow\tools\git\gen_git_source.zip
--generate external/local_config_git/gen/spec.json external/local_config_git/gen/head
external/local_config_git/gen/branch_ref
bazel-out/x64_windows-opt/bin/tensorflow/core/util/version_info.cc
--git_tag_override= Reason: (error: 5): Access is denied.
What am i doing wrong?
Edit:
added a junction with #László advice:
mklink /j c:\python "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1520.0_x64__qbz5n2kfra8p0"
and used it when "configure" asked me to, for both python.exe and the libs, yet the error remains. details:
ERROR: C:/users/shahar/git/tensorflow/tensorflow/core/BUILD:2537:1:
Executing genrule //tensorflow/core:version_info_gen failed (Exit 5)
LAUNCHER ERROR: Cannot launch process: "C:/python/python.exe"
C:\users\shahar_bazel_shahar\duchsbgv\execroot\org_tensorflow\bazel-out\x64_windows-opt\bin\tensorflow\tools\git\gen_git_source.zip
--generate external/local_config_git/gen/spec.json external/local_config_git/gen/head
external/local_config_git/gen/branch_ref
bazel-out/x64_windows-opt/bin/tensorflow/core/util/version_info.cc
--git_tag_override= Reason: (error: 5): Access is denied.
Edit_2:
Again with #László help:
I ran:
bazel info execution_root
got a path, cd into it.
From there i ran:
c:\python\python.exe c:\users\shahar\_bazel_shahar\duchsbgv\execroot\org_tensorflow\bazel-out\x64_windows-opt\bin\tensorflow\tools\git\gen_git_source.zip --generate external/local_config_git/gen/spec.json external/local_config_git/gen/head external/local_config_git/gen/branch_ref c:\tmp\foo.cc --git_tag_override=
and got the following error message:
Traceback (most recent call last): File
"\?\C:\Users\Shahar\AppData\Local\Temp\Bazel.runfiles_ltu2ig_a\runfiles\org_tensorflow\tensorflow\tools\git\gen_git_source.py",
line 340, in
generate(args.generate, args.git_tag_override) File "\?\C:\Users\Shahar\AppData\Local\Temp\Bazel.runfiles_ltu2ig_a\runfiles\org_tensorflow\tensorflow\tools\git\gen_git_source.py",
line 273, in generate
write_version_info(dest_file, git_version) File "\?\C:\Users\Shahar\AppData\Local\Temp\Bazel.runfiles_ltu2ig_a\runfiles\org_tensorflow\tensorflow\tools\git\gen_git_source.py",
line 228, in write_version_info
open(filename, "w").write(contents) FileNotFoundError: [Errno 2] No such file or directory: 'c:\tmp\foo.cc'

Answer 1

I suspect the space in the Python path.
Try this:
open cmd.exe
create a junction c:\python pointing to the real Python directory:
mklink /j c:\python "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.7_3.7.1520.0_x64__qbz5n2kfra8p0"
You can use any other path than c:\python, just make sure there's no space or special characters in it.
run ./configure.py again, use c:\python