SGDK 1.34 (december 2017)
Copyright Stephane Dallongeville
https://stephane-d.github.io/SGDK/

SGDK is an open and free development kit for the Sega Megadrive.
It contains a development library (sources included) to make software on Sega Megadrive / Genesis system, a GCC compiler (binaries provided for Windows OS only) and some tools used to build the ROM.
SGDK and affiliated tools are distribued under the MIT license (see license.txt file).

You can find the library doxygen documentation in the 'doc' directory: doc/html/files.html

SGDK GitHub page: https://github.com/Stephane-D/SGDK
SGDK Wiki page: https://github.com/Stephane-D/SGDK/wiki

You can find basics tutorials about how install and use SGDK on this page:
https://github.com/Stephane-D/SGDK/wiki/Tuto-Intro

Unix/Linux users should give a try to the Gendev project from Kubilus:
https://github.com/kubilus1/gendev
It allows to quickly setup SGDK on a Unix environment.

MacOSX users also have access to SGDK with Gendev for MacOS from Sonic3D:
https://github.com/SONIC3D/gendev-macos

There is also the new and nice solution proposed by Daniel Valdivieso tu use SGDK under any OS using Wine: 
https://github.com/v4ld3r5/sgdk_vscode_template

If you enjoy SGDK you can support it using the donation link:
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=2SCWVXYDEEBUU

Thanks =) I wish you a happy coding time !