LibrePilot/CONTRIBUTING.md

# How to build from source?

Both development environment and GCS are supported on Windows, Linux and Mac OS X

## Install prerequisites

The first step is to Install all OS specific prerequisites.

### Mac OS X

Install XCode and its relatated command line tools (follow Apple documentation).
Install git, curl and p7zip. You can use brew `brew install git curl p7zip` or macport: `sudo port install git curl p7zip`


### Ubuntu

  sudo apt-get install git build-essential curl gdb wget debhelper p7zip-full unzip flex bison libsdl1.2-dev  libudev-dev  libusb-1.0-0-dev libc6-i386 mesa-common-dev


### Windows

Install [Msys2](https://msys2.github.io/) following the instructions on the web site.  You can either install the i686 (32 bit) or x86_64 (64 bit) version.

Start a "MinGW-w64 Win32 Shell" or "MinGW-w64 Win32 Win64 Shell" (NOT "MSYS2 Shell")

Install the dependent packages (32 bit):

  pacman -S --needed git unzip tar mingw-w64-i686-toolchain mingw-w64-i686-qt5 mingw-w64-i686-SDL mingw-w64-i686-mesa mingw-w64-i686-openssl

Or for a 64 bit build:

  pacman -S --needed git unzip tar mingw-w64-x86_64-toolchain mingw-w64-x86_64-qt5 mingw-w64-x86_64-SDL mingw-w64-x86_64-mesa mingw-w64-x86_64-openssl

*NOTE* On Windows you need to run the mingw version of make, which is 'mingw32-make'


## Setup the build environment and build

The `all_sdk_install` target will automatically retrieve and install all needed tools (qt, arm gcc etc.) in a local folder `/path/to/LibrePilot_root/tools`

### Ubuntu / Mac OS X

  make all_sdk_install
  make package

### Windows

  mingw32-make all_sdk_install
  mingw32-make package

The `package` target will build the complete installable package for the current platform.  You can build the 'all' target to just build the software.

Run make with no arguments to show the complete list of supported targets.