How to build libtorch to get the output of the offical libtorch release?

brainoom · January 29, 2020, 11:13am

I am trying to build libtorch, to make it usable from a cmake project, to get a result like the offical build in here: download pytorch org/libtorch/nightly/cpu/libtorch-shared-with-deps-latest.zip
is what I want to get, but I was unable to get it by following this exactly:

github.com

pytorch/pytorch/blob/master/docs/libtorch.rst

libtorch (C++-only)
===================

The core of pytorch does not depend on Python. A
CMake-based build system compiles the C++ source code into a shared
object, libtorch.so.

Building libtorch
-----------------

You can use a python script/module located in tools package to build libtorch
::
   cd <pytorch_root>

   # Make a new folder to build in to avoid polluting the source directories
   mkdir build_libtorch && cd build_libtorch

   # You might need to export some required environment variables here.
   Normally setup.py sets good default env variables, but you'll have to do
   that manually.

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I used pytorch 1.4.0 tag on ubuntu16.04, and followed the above instructions exactly. What I got in pytorch_build folder is another folder named build, and in it a mess of cmake build “residuals” like the “CMakeFiles” folder, together with the lib, bin and include folders, but without the “share” folder.

Did anyone has success following these instructions?

The discussion I’ve found, here:
discuss pytorch org/t/building-libtorch-c-distribution-from-source/27519/2
triggers this issue:

which was closed with updated instructions, But I follow them and still do not get anything like the official build.

A similar question have been unanswered here: on question discuss pytorch org/t/how-to-build-libtorch-with-cmake/42723

Sorry for not including the full links, I’m a new user and discuss won’t let me include more than two links

Any ideas?
Should this be an issue to be opened on github?

Thanks

Hartbook · January 29, 2020, 4:49pm

Once everything has been compiled you can find include/ lib/ and share/ directories inside pytorch/torch/

brainoom · February 2, 2020, 8:48am

Thank for the answer! But how did It get there?! it’s a pretty messy build, when the build sprays files all over your source dir…

I imagine/hope this is not the way the official release is created.