Modify PyCharm-CE to run with native fsnotifier on aarch64 (nVidia Jetson Nano)

fsnotifier-linux-aarch64.gist

This is my how-to on getting PyCharm-CE or IDEA to run on a Jetson Nano. Tested with PyCharm-CE 2019.1 Build 191.7479

The linux install package runs on a jetson nano, but with some performance impact:

1. There is no native fsnotifier for linux-aarch64 in the package, and it won't be selected by the application if it would 
be there.
2. inotify configuration is missing/not sufficient for PyCharm. Install https://gist.github.com/bittner/c7d1d49fe0c9af907f24 

To get a native fsnotifier, you need to compile it from source, and you need to convince the application to select and start it.
This is currently implemented in https://github.com/JetBrains/intellij-community/pull/1140. As long as it is not yet integrated
into the build, you need to do a few things to do it yourself.

3. Have a build machine (linux or windows - as of IDEA 2019.2, only linux works), with IntelliJ IDEA installed, and capable of a 
successful build: https://github.com/JetBrains/intellij-community#building-intellij-community-edition

3.1 Add the build file in python/build.xml to python.

3.2 change the allowed heap (-Xmx2G) and permanent (-XX:MaxPermSize=256m) values in build.xml and python/build.xml for the 
call_gant macro. This can be done on a machine with 8G of RAM, seems to speed things up, too.

4. Clone the Repository https://github.com/JetBrains/intellij-community, and apply the pull request 
https://github.com/JetBrains/intellij-community/pull/1140 there.

5. Run the ant build file. The resulting package is in ./out/pycharm-ce/artifacts

If you need to compile fsnotifier anew, do it on the Jetson nano with ./native/fsNotifier/linux/Jetson_make.sh, name it
apropriately (fsnotifier-linux-aarch64) and copy it into the ./bin directory of the installation.

IDEA CE 191.7479 witch aarch64 fsnotifier: https://drive.google.com/open?id=15Xv8_6NlfdUTY9jkNPvqb0PkY4S_Y5h1

PyCharm CE 191.7479 with aarch64 fsnotifier: https://drive.google.com/open?id=1yUAYNw57ENvoWSI8UUICE6NefRRf-Vp0

Thank you. Downloaded and extracted for my Raspberry Pi 4. Using on PhpStorm.