(From now on, official GP2X SDK is available and you can download them from the link below)
. (For WINDOWS version, some inconvenient things such as library link and the shortage of template source were corrected)
(In the case of the SDK for Linux OS, it does not contain editor however script program for generating compiler and library files are included in the SDK for Linux OS)
Regarding opening source code,
Dev-C++ source file is contained in a compressed file for Windows.
Once you install this program, it will automatically download the compiler source for Linux from the internet.
And the compiler source for Windows is obtainable from script for Linux.
And If you need more library source, please contact to firstname.lastname@example.org and GPH will gladly provide it or open it on dev forum, http://dev.gp2x.com/forum/
However you can easily get most of the library from the internet, as Dev-C++ for GP2X was coded with the source code which is already opened on the internet