Working on the Dependency Libraries
If we are working on the dependencies (e.g. TH, THPP, etc.) we can re-build our changes more quickly by simply running the build_deps command directly. This will automatically call into build_all.sh to re-build our libraries, and copy the generated libraries appropriately. If we are using Setuptools develop mode, we will be using the local extension library built in the PyTorch directory. Because we have specified the paths to the shared libraries when compiling our Extension Libraries, the changes will be picked up:
```bash
we are using the local extension
(p3) killeent@devgpu047:~$ python
Python 3.6.1 |Continuum Analytics, Inc.| (default, Mar 22 2017, 19:54:23)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.



import torch
torch._C.file
'/home/killeent/github/pytorch/torch/_C.cpython-36m-x86_64-linux-gnu.so'



it references the local shared object library we just re-built