Add 'linux rasp pi4 X11 EGLFS'

linux-rasp-pi4-X11-EGLFS.md

@@ -0,0 +1,28 @@
+### Install packages on RPI
+
+// RPI4 OpenGL Support
+```
+apt-get install libgles2-mesa-dev
+apt-get install xorg-dev
+```
+
+// Packages recommended by tal.org
+```
+apt install build-essential libfontconfig1-dev libdbus-1-dev libfreetype6-dev libicu-dev libinput-dev libxkbcommon-dev libsqlite3-dev libssl-dev libpng-dev libjpeg-dev libglib2.0-dev libraspberrypi-dev
+```
+
+// Packages recommended by wiki.qt.io
+```
+sudo apt-get build-dep qt4-x11
+sudo apt-get build-dep libqt5gui5
+sudo apt-get install libudev-dev libinput-dev libts-dev libxcb-xinerama0-dev libxcb-xinerama0
+```
+
+// Note that we have to use gcc8 for this build otherwise we will face error in configuration step
+// GCC8 will be attached to the repository for further usage
+
+// Configuration
+```
+../configure -release -opengl es2 -make libs -nomake tests -nomake examples -skip wayland -skip qtscript -skip qtwebengine -skip location -device linux-rasp-pi3-vc4-g++ -device-option CROSS_COMPILE=/media/mehran/extra4/Qt5Pi4/raspi/rpi-gcc-8.3.0/bin/arm-linux-gnueabihf- -sysroot /media/mehran/extra4/Qt5Pi4/raspi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix /media/mehran/extra4/Qt5Pi4/raspi/qt5pi -hostprefix /media/mehran/extra4/Qt5Pi4/raspi/qt5 -v -no-use-gold-linker
+
+```