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

Hi,
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.