Building the Tensorflow binding on MacOS.

[charlie5]

The following problems/adjustments were reported by Roger Mc on c.l.a ...

1. I removed "-lpthread" from Builder sections of the project (gpr) files due to builder complaint.

2. In tensorflow_wrap.c I needed to change
   #include <tensorflow/tensorflow/c/c_api.h>
   to
   #include <tensorflow/c/c_api.h>

3. In tensorflow.gpr I needed to change
   with "swig";
   to
   with "../../../tier-0/swig/library/swig.gpr";

4. In tensorflow.gpr I added my path to tensorflow/c/c_api.h to the Source_Dirs
   In my case: "/usr/local/Cellar/libtensorflow/2.11.0/include"

5. Not sure whether or not I caused this diff statement for the gpr files:
   -end hello_TF;
   \ No newline at end of file
   +end Hello_TF;

6. In hello_tf.gpr:

Change ...

with
"tensorflow",
"swig";

to ...

with "../../../library/tensorflow.gpr";

Presumably 'with' of "swig" is redundant, as it's imported by tensorflow.gpr

[charlie5]

Problems 1, 2 and 5 have been fixed.

Problem 3:

I don't understand why a relative path to 'swig.gpr' is needed, since the swig library folder should have been added to GPR_PROJECT_PATH when "source $CBOUND/cbound-gpr_paths.sh" is done in '.bashrc' (or equivalent) as per the 'Install' notes in the 'README.md'.

Problem 4:

I can probably fix this with as OS scenario variable. Will try it tomorrow.

Problem 6:

For the relative path to 'tensorflow.gpr', the same applies as in Problem 3.

The 'with' of "swig" is indeed redundant and has been removed.

Thanks for reporting these Roger.

[rogermc2]

Of course!
Please ignore Problems 3 and 6.

[charlie5]

@rogermc2

How was tensorflow installed on your system ? Via a package manager ?

I need to know if the 'c_api.h' will be installed in "/usr/local/Cellar/libtensorflow/2.11.0/include" as a 'standard' location on other peoples MacOS systems.

[rogermc2]

I think this is quite problematic.
On my Ventura computer, tensorflow was installed using the Homebrew package manager.
As this installation works I suspect that this is the most likely and, possibly, the best method.
On High Sierra I could only install tensorflow with pip as brew installation failed.
However, tensorflow installation with pip doesn't include the tensorflow library, so linking fails with undefined symbols.
Also note that Mac OSX High Sierra is "no longer supported" by Apple and Homebrew.

[rogermc2]

I'm wondering if a cBound solution is possible for Python3?
I had this idea because I'm currently using the Python C API extensively.

[rogermc2]

I don't really understand why Problem 4 occurs as /usr/local/include has a tensorflow link to /Cellar/libtensorflow/2.11.0/include/tensorflow

[charlie5]

Didn't get much of a chance to look at this today, sorry.

I have d/l'ed and am installing macOS onto a qemu box, so should be able to experiment a bit tomorrow.