QtPi4

Build steps for building qt 5.15 for raspberry pi 4B

Archive: http://download.qt.io/archive/qt/5.15/5.15.0/single/qt-everywhere-src-5.15.0.tar.xz

global preparation on host

sudo apt install autoconf automake libtool flex bison gperf pkg-config gdb-multiarch
sudo apt install gcc-9-aarch64-linux-gnu
sudo apt install g++-9-aarch64-linux-gnu

symlinks for compiler

ln -s /usr/bin/aarch64-linux-gnu-g++-9 /usr/bin/aarch64-linux-gnu-g++
ln -s /usr/bin/aarch64-linux-gnu-gcc-9 /usr/bin/aarch64-linux-gnu-gcc

#Cross-compile with Ubuntu-server

Installed image: https://ubuntu.com/download/raspberry-pi/thank-you?version=20.04&architecture=arm64+raspi

Linux ubuntu 5.4.0-1012-raspi #12-Ubuntu SMP Wed May 27 04:08:35 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

##prepare device

###update system and install gnome

sudo apt-get update
sudo apt-get dist-upgrade
sudo reboot

sudo apt install ubuntu-desktop

(incase of display issues, e.g. resolution, black-border) vi /boot/firmware/usercfg.txt Add the following lines:

dtoverlay=vc4-fkms-v3d
disable_overscan=1

-> reboot

###update system and install gnome uncomment deb-src in /etc/apt/sources.list

sudo apt update
sudo apt-get build-dep qtbase-opensource-src

(optional) for gstreamer support

sudo apt-get install gstreamer1.0-plugins* libgstreamer-plugins-base1.0-dev libopenal-dev

sudo mkdir -p /opt/qt/5.15.0 sudo chown -R 1000:1000 /opt/qt

prepare host for compilation

mkdir -p rootfs/usr/include & mkdir -p rootfs/usr/lib & mkdir -p rootfs/opt/qt/5.15.0

rsync -avz ubuntu@yourpi:/lib rootfs/
rsync -avz ubuntu@yourpi:/usr/include rootfs/usr/
rsync -avz ubuntu@yourpi:/usr/lib rootfs/usr/

python symlink script

./sysroot-relativelinks.py rootfs

configure and build

mkdir build & cd build

../../../qt-everywhere-src-5.15.0/configure -release -opengl es2 -eglfs -device linux-rasp-pi4b-v3d-g++ -device-option CROSS_COMPILE=/usr/bin/aarch64-linux-gnu- -sysroot /path/to/rootfs -prefix /opt/qt/5.15.0 -opensource -confirm-license -skip qtscript -skip qtwebengine -nomake tests -nomake examples -make libs -pkg-config -no-use-gold-linker -v -recheck

(optional) -optimize-size

##build

make -j4
make install

sync qt folder to device

rsync -avz rootfs/opt/qt/5.15.0 ubuntu@yourpi:/opt/qt/

#Cross-compile with Raspberry Pi OS 64-bit

Installed image:
https://downloads.raspberrypi.org/raspios_arm64/images/raspios_arm64-2020-05-28/2020-05-27-raspios-buster-arm64.zip

Linux raspberrypi 5.4.42-v8+ #1319 SMP PREEMPT Wed May 20 14:18:56 BST 2020 aarch64 GNU/Linux

prepare device

• uncomment deb-src in /etc/apt/sources.list

sudo apt-get update
sudo apt-get dist-upgrade
sudo rpi-update
sudo reboot

sudo apt-get build-dep qtbase-opensource-src
sudo apt-get install libts-dev libbluetooth-dev bluez-tools gstreamer1.0-plugins* libgstreamer-plugins-base1.0-dev libopenal-dev pulseaudio

apt-get install libxcb-xinerama0-dev flex bison gperf libicu-dev libxslt-dev ruby libssl-dev libxcursor-dev libxcomposite-dev libxdamage-dev libxrandr-dev libdbus-1-dev libfontconfig1-dev libcap-dev libxtst-dev libpulse-dev libudev-dev libpci-dev libnss3-dev libasound2-dev libxss-dev libegl1-mesa-dev gperf bison libasound2-dev libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev

apt-get install '^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev

prepare host

mkdir -p rootfs/usr/include & mkdir -p rootfs/usr/lib & mkdir -p rootfs/opt/qt/5.15.0

rsync -avz pi@yourpi:/lib rootfs/
rsync -avz pi@yourpi:/usr/include rootfs/usr/
rsync -avz pi@yourpi:/usr/lib rootfs/usr/
rsync -avz pi@yourpi:/opt/vc rootfs/opt/

python symlink script

configure and build

../../../qt-everywhere-src-5.15.0/configure -release -opengl es2 -eglfs -device linux-rasp-pi4b-v3d-g++ -device-option CROSS_COMPILE=/usr/bin/aarch64-linux-gnu- -sysroot /opt/raspberry/pi/pi-os86-202005/rootfs -prefix /opt/qt/5.15.0 -opensource -confirm-license -skip qtscript -skip qtwebengine -nomake tests -nomake examples -make libs -pkg-config -no-use-gold-linker -v -recheck