Qt auf dem Raspberry Pi 4

Aktualisieren Sie die Software und installieren Sie zusätzliche Pakete:

sudo apt update
sudo apt install -y build-essential cmake unzip gfortran
sudo apt install -y gcc git bison python gperf pkg-config gdb-multiarch wget
sudo apt-get -y install sshpass gcc g++ gperf flex texinfo gawk bison openssl pigz libncurses-dev autoconf automake tar figlet

# Build-Umgebung vorbereiten

- Ordner erstellen:

sudo mkdir ~/rpi-qt
sudo mkdir ~/rpi-qt/build
sudo mkdir ~/rpi-qt/tools
sudo mkdir ~/rpi-qt/sysroot
sudo mkdir ~/rpi-qt/sysroot/usr
sudo mkdir ~/rpi-qt/sysroot/opt

sudo chown -R 1000:1000 ~/rpi-qt

- Qt-Quellen herunterladen und extrahieren:

sudo wget -P ~/rpi-qt http://download.qt.io/archive/qt/5.15/5.15.2/single/qt-everywhere-src-5.15.2.tar.xz
sudo tar xf ~/rpi-qt/qt-everywhere-src-5.15.2.tar.xz -C ~/rpi-qt/
sudo chown -R 1000:1000 ~/rpi-qt

- Patchen Sie die QT-Quellen.

cp -R ~/rpi-qt/qt-everywhere-src-5.15.2/qtbase/mkspecs/linux-arm-gnueabi-g++ ~/rpi-qt/qt-everywhere-src-5.15.2/qtbase/mkspecs/linux-arm-gnueabihf-g++
sed -i -e 's/arm-linux-gnueabi-/arm-linux-gnueabihf-/g' ~/rpi-qt/qt-everywhere-src-5.15.2/qtbase/mkspecs/linux-arm-gnueabihf-g++/qmake.conf
sed -i -e 's/\"main\"\: \"vc_dispmanx_display_open(0)\;\"/\"main\"\: \[\"vc_dispmanx_display_open(0)\;\"\, \"EGL_DISPMANX_WINDOW_T \*eglWindow \= new EGL_DISPMANX_WINDOW_T\;\"\]/g' ~/rpi-qt/qt-everywhere-src-5.15.2/qtbase/src/gui/configure.json

- Compiler herunterladen und extrahieren:

sudo wget -P ~/rpi-qt/tools https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Bullseye/GCC%2010.3.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.3.0-pi_3%2B.tar.gz
sudo tar xf ~/rpi-qt/tools/cross-gcc-*.tar.gz -C ~/rpi-qt/tools/
sudo chown -R 1000:1000 ~/rpi-qt

- rsync-Dateien von raspberry: Verwenden Sie Ihre Werte aus Ihrem Raspberry für die Variablen raspberry_ip, raspberry_user und raspberry_pwd.

raspberry_ip=192.168.2.108
raspberry_user=pi
raspberry_pwd=raspberry
touch ~/.ssh/known_hosts
ssh-keyscan $raspberry_ip >> ~/.ssh/known_hosts
sshpass -p "$raspberry_pwd" rsync -avz --rsync-path="sudo rsync" --delete "$raspberry_user"@"$raspberry_ip":/lib ~/rpi-qt/sysroot
sshpass -p "$raspberry_pwd" rsync -avz --rsync-path="sudo rsync" --delete "$raspberry_user"@"$raspberry_ip":/usr/include ~/rpi-qt/sysroot/usr
sshpass -p "$raspberry_pwd" rsync -avz --rsync-path="sudo rsync" --delete "$raspberry_user"@"$raspberry_ip":/usr/lib ~/rpi-qt/sysroot/usr

- Symbolische Links reparieren:

wget -P ~/rpi-qt https://raw.githubusercontent.com/abhiTronix/rpi_rootfs/master/scripts/sysroot-relativelinks.py
sudo chmod +x ~/rpi-qt/sysroot-relativelinks.py
~/rpi-qt/sysroot-relativelinks.py ~/rpi-qt/sysroot

- Qt-Build konfigurieren:

cd ~/rpi-qt/build
CROSS_COMPILER_LOCATION="$HOME"/rpi-qt/tools/cross-pi-gcc-*
../qt-everywhere-src-5.15.2/configure -release -opengl es2 -eglfs -device linux-rasp-pi4-v3d-g++ -device-option CROSS_COMPILE=$(echo $CROSS_COMPILER_LOCATION)/bin/arm-linux-gnueabihf- -sysroot ~/rpi-qt/sysroot/ -prefix /usr/local/qt5.15 -extprefix ~/rpi-qt/qt5.15 -opensource -confirm-license -skip qtscript -skip qtwayland -skip qtwebengine -nomake tests -make libs -pkg-config -no-use-gold-linker -v -recheck -L$HOME/rpi-qt/sysroot/usr/lib/arm-linux-gnueabihf -I$HOME/rpi-qt/sysroot/usr/include/arm-linux-gnueabihf

- Qt erstellen:

make -j$(nproc)
make install

- rsync Sie Qt-Binärdateien mit Raspberry:

sshpass -p "$raspberry_pwd" rsync -avz --rsync-path="sudo rsync" ~/rpi-qt/qt5.15 "$raspberry_user"@"$raspberry_ip":/usr/local

Letzter Schritt auf dem Zielcomputer (Raspberry Pi)

- Linker auf Raspberry Pi aktualisieren

Geben Sie den folgenden Befehl auf dem Raspberry Pi ein, um das Gerät zu aktualisieren, damit das Linker die neuen QT-Binärdateien finden kann:

echo /usr/local/qt5.15/lib | sudo tee /etc/ld.so.conf.d/qt5.15.conf
sudo ldconfig