Compiling g2core on Linux and OS X (command line) - synthetos/g2 GitHub Wiki

What's Needed

Linux (Ubuntu-based)
```
sudo apt-get install git-core make
```
If you're running a 64-bit version of Ubuntu, you'll also need to install some 32-bit pieces:
```
sudo apt-get install libstdc++6:i386
```
OS X - If you don't already have Xcode command line tools installed (it doesn't hurt to run it again):
```
xcode-select --install
```

Cloning the repo

See Getting Started with G2core → Cloning the Repo if you haven't already.

Build the sources:

For Arduino Due:

cd g2/g2core
make PLATFORM=DUE BOARD=gShield

For TinyG V9 board:

cd g2/g2core
make CONFIG=TestV9

See Adding and Revising Boards for explanation of the available make options.

Flashing

See Flashing g2core with Linux.

JTag Debugging

We recommend using the Segger J-Link for debugging. It can also be used for flashing (which may be faster than other flashing methods).

In addition to the debugger, you may also need a SWD Cable and JTag to SWD Adapter to connect to the Arduino Due. Some versions of the J-Link already have a SWD port and come with a cable.

When connecting everything, ensure that all cables are plugged in with the correct polarity. The SWD cable is not keyed, so markings on the boards should be used to align it. Typically, there is a dot or 1 near one corner of the SWD pin header (look for a 5x2 pin header with 0.5mm pitch) that should be aligned with the striped side of the cable.

Linux/Ubuntu Setup and Usage

Download and install the J-Link Software and Documentation Pack. If using Ubuntu, you probably want the 64-bit .deb.
Ensure your user account has access to usb/serial devices: sudo usermod -a -G dialout USERNAME
Install the multi-architecture version of gdb: sudo apt-get install gdb-multiarch
Start the JLink GDB server. This command works for Arduino Due; it may need to be modified for other boards: JLinkGDBServer -if SWD -device AT91SAM3X8E
Start gdb: gdb-multiarch ./bin/gShield/g2core.elf
Inside gdb, connect to the JLink GDB server: target extended-remote :2331
Type load to flash the current binary to the device.
Type monitor reset to reset the device.
Type continue to run, and use gdb as normal.

You may need to re-plug the device's USB after flashing/resetting if the host is not properly detecting it immediately.