How to get support for developing native apps using C/C++

I am doing an initial evaluation of the effort to port a multi-platform native app to webOS for LG TVs.
The application is mainly written using C/C++ and uses HTML/javascript for the UI.
I want to get information on how to obtain documentation and native development tools (e.g. SDK and toolchain) related to this topic.
Thanks in advance for any guidance.

Currently, NDK is only available for contracted partners of LG. For questions about LG partnership, please contact your local LG office. If you don’t have the contact information, you can contact LG customer service center first. Thank you.