qtrpi

Scripts for building and deploying Qt5 to RaspberryPi devices

Setup:

Clone the repository:

git clone https://github.com/matt-blodgett/qtrpi.git
cd ./qtrpi

Configure shared script variables and change applicable defaults:

Of particular importance is setting the --target-host variable as it is empty by default.

./qtrpi.sh config --local-path "/opt/qtrpi"
./qtrpi.sh config --target-host "pi@192.168.0.15"

Setup passwordless `ssh` with the target device:

This will prevent numerous repeated password prompts when running the build process.
The setup is made simple with the --set-ssh-auth option:
Simply follow the prompts and you should be able to ssh to the device unprompted.

./qtrpi.sh device --set-ssh-auth

Run the build script:

./qtrpi.sh build --install

Troubleshooting:

The build process has a few distinct steps:

Creates a local repository where the RaspberryPi build toolchain and built Qt modules will be located
Installs dependencies on the target device.
Creates a sysroot and uses rsync to keep it up to date with new modules and dependencies.
Builds QtBase using the cross compiling toolchain from https://github.com/raspberrypi/tools.git
Updates and configures the device with the new libs and fixes known issues with the process.

If building QtBase fails try the following steps:

Install any missing dependencies on the device
Make sure rpi-update has been run on the device
Tweak the ./configure variables used
Retry the build with ./qtrpi.sh build --rebuild

Configuring QtCreator:

Source Reference: wiki.qt.io/RasperryPi2EGLFS

Once qtbase is successfully built, use the following steps to configure QtCreator to build and deploy automatically to the device.

Go to Options -> Devices and add:

Generic Linux Device:
Enter IP address, user & password for the device

Go to Options -> Compilers and add:

'GCC', compiler path: 
../raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-g++

Go to Options -> Debuggers and add:

../raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-gdb

Go to Options -> Qt Versions and add:
```
~/raspi/qt5/bin/qmake`
```

Go to Options -> Build & Run -> Kits and add:

Generic Linux Device
Device: the one just created
Sysroot: ../raspi/sysroot
Compiler: the one just created
Debugger: the one just created
Qt version: the one seen under Qt Versions
Qt mkspec: leave empty

matt-blodgett/qtrpi