i.MX8MP enable qt5 for LDP and Yocto 6.1.22

[#1]

SoC: i.MX8MP

LDP: Ubuntu22.04 and Ubuntu 20.04

Yocto: 6.1.22 mickledore

This doc includes two parts:

1)How to enable qt5 in LDP

2)How to enable qt5 in Yocto Linux 6.1.22

How to use qt5 in LDP(Linux Distribution Poc):

The gcc and glibc is diffrent from Yocto Linux and Linux Distribution Poc. To cross compile the file between Linux and Ubuntu, we need to care about that.

To full enable the GPU usage of QT lib, please use "-gles" libs by apt-get command. Qt source code is not suggested, for it has not been tested.

Building Qt5, for example:

sudo apt-get update
sudo apt-get -y install libqt5gui5-gles
sudo apt-get -y install libqt5quick5-gles
sudo apt-get -y install qtbase5-gles-dev

opengles test case glmark:

sudo apt-get -y install glmark2-es2-wayland

How to find the missing lib for apt-get:

sudo apt-get install apt-file
apt-file search xx

open wifi if needed NXP internal internet has limitation:

sudo modprobe moal mod_para=nxp/wifi_mod_para.conf

and add "nameserver 8.8.8.8" in vi /etc/resolv.conf.

You can also try: 

echo "nameserver 8.8.8.8" | sudo tee /etc/resolv.conf > /dev/null

some times system time is not automatically update, and that cause apt-get update fail

User and choose manually configure it by:

sudo date -s "2023-08-31 14:00:00"

For Chinese support for ubuntu, please use:

sudo apt-get install ttf-wqy-microhei ttf-wqy-zenhei xfonts-wqy

possible env path you need to export:

XDG_RUNTIME_DIR="/run/user/1000"
export QT_QPA_PLATFORM=wayland

User can choose root login by command like:

user@imx8mpevk:~$ sudo passwd
New password:
Retype new password:

please use qmake to build qt project:

1)qmake -o Makefile HelloWorld.pro
2)make

some other qt libs:

sudo apt-get install -y qtwayland5
sudo apt-get install -y qml-module-qtquick-controls
sudo apt-get install -y qml-module-qtquick-controls2
sudo apt-get install -y qml-module-qtcharts
sudo apt-get install -y libqt5multimedia5 
sudo apt-get install -y libqt5serialport5 
sudo apt-get install -y libqt5script5
sudo apt-get install -y qml-module-qt-labs-settings
sudo apt-get install -y qml-module-qt-labs-platform
sudo apt-get install -y qml-module-qtmultimedia
sudo apt-get install -y libqt5webengine5
sudo apt-get install -y qml-module-qtwebengine
sudo apt-get install -y qml-module-qtquick-dialogs

How to enable qt5 in Yocto 6.1.22:

1.download meta-qt5

git clone https://github.com/meta-qt5/meta-qt5.git
git checkout origin/mickledore

copy Yocto version 5.10.72_2.2.0 sources\meta-imx\meta-sdk\dynamic-layers\qt5-layer to the same path of Yocto 6.1.22

2.apply two patches

qt5-1.patch: modify the path from qt6 to qt5

qt5-2.patch: modify the qt5 related in meta-imx, including:

1)Yocto grammer update，from "_" to ":"; 

2)NXP grammer，from mx8 to mx8-nxp-sdk; 

3)remove gstreamer1.0-plugins-good-qt, for qt5 has been natively added into gst-plugin-good-1.22(which is not in 1.18)

3.after input command like "DISTRO=fsl-imx-xwayland MACHINE=imx8mp-lpddr4-evk source imx-setup-release.sh -b build-xwayland", comment the "meta-nxp-demo-experience"

# i.MX Yocto Project Release layers
BBLAYERS += "${BSPDIR}/sources/meta-imx/meta-bsp"
BBLAYERS += "${BSPDIR}/sources/meta-imx/meta-sdk"
BBLAYERS += "${BSPDIR}/sources/meta-imx/meta-ml"
BBLAYERS += "${BSPDIR}/sources/meta-imx/meta-v2x"
#BBLAYERS += "${BSPDIR}/sources/meta-nxp-demo-experience"