This is my sdk for usage with slackware on A20 devices like bananapi, cubietruck and olimex-som. For more info see https://github.com/tjohann/a20_sdk .
An educational software system of a tiny self-compiling C compiler
...The common theme is to identify and resolve self-reference in systems code which is seen as the key challenge when teaching systems engineering, hence the name. Selfie is implemented in a single (!) file and kept minimal for simplicity. There is also a simple in-memory linker, a RISC-U disassembler, a garbage collector, L1 instruction and data caches, a profiler, and a debugger with replay.
A socket daemon to multiplex connections from and to iOS devices
...When usbmuxd is running it provides a socket interface at /var/run/usbmuxd that is designed to be compatible with the socket interface that is provided on macOS. You should also create an usbmux user that has access to USB devices on your system. Alternatively, just pass a different username using the -U argument. usbmuxd is not used for tethering data transfers which uses a dedicated USB interface to act as a virtual network device. The higher-level layers, especially if you want to write an application to interact with the device, are handled by libimobiledevice.
It has always been difficult 2 rite and compile C programs while working on the terminal .We have come with a solution which integrates the GCC and editor.It provides an intial framework so u can start work right away. so wat r u wait 4 go get it.