Build QT static libraries, with LinuxFB and minimum dependencies.

[Reffum]

Hi! I need to create application for embedded Linux systems. On this Linux system I have only Linux kernel, modules and Busybox.
I want create QT windows application and install it to my embedded systems. Now I need only qt base and widgets. How to make do it right and easily?
My platforms: PC Virtual Box and Raspberry PI for debug. And my ARM Custom Board.
I try create this application for PC. I download QT sources, build it with configure -static option and install. I also add to PATH variable. But when I build simple application it depend from several libraries. I have this errors when run qmake && make:

[oleg@reffum qt_static]$ make
g++ -static -o main main.o main_plugin_import.o   -L/opt/Qt5.8/lib -L/opt/Qt5.8/plugins/platforms -lqwayland-egl -lwayland-egl -lqwayland-generic -lqwayland-xcomposite-egl -lqwayland-xcomposite-glx -lQt5WaylandClient -lXcomposite -lwayland-client -lwayland-cursor -lqxcb -L/opt/Qt5.8/plugins/xcbglintegrations -lqxcb-egl-integration -lqxcb-glx-integration -lQt5XcbQpa -lxcb-xinerama -lQt5LinuxAccessibilitySupport -lQt5AccessibilitySupport -lQt5GlxSupport -lXrender -lxcb-xkb -lxcb-sync -lxcb-xfixes -lxcb-randr -lxcb-image -lxcb-shm -lxcb-keysyms -lxcb-icccm -lxcb-shape -lxcb-glx -lXi -lSM -lICE -lxcb-render-util -lxcb-render -lxkbcommon-x11 -L/opt/Qt5.8/plugins/imageformats -lqgif -lqicns -lqico -lqjp2 -ljasper -lqjpeg -ljpeg -lqmng -lmng -lqtga -lqtiff -ltiff -lqwbmp -lqwebp -lwebp -lwebpdemux -L/opt/Qt5.8/plugins/egldeviceintegrations -lqeglfs-kms-egldevice-integration -lqeglfs-kms-integration -lQt5EglFsKmsSupport -lgbm -ldrm -lqeglfs-x11-integration -lQt5EglFSDeviceIntegration -lQt5EventDispatcherSupport -lQt5ServiceSupport -lQt5ThemeSupport -lQt5DBus -ldbus-1 -lQt5FontDatabaseSupport -lQt5FbSupport -lQt5EglSupport -lXext -lQt5PlatformCompositorSupport -lQt5InputSupport -lmtdev -linput -lxkbcommon -lQt5Gui -lpng16 -lharfbuzz -lQt5DeviceDiscoverySupport -ludev -lQt5Core -licui18n -licuuc -licudata -lm -ldl -lrt -lz -lpcre16 -lgthread-2.0 -lglib-2.0 -lxcb -lX11 -lX11-xcb -lfontconfig -lfreetype -lts -lEGL -lGL -lpthread 
/usr/bin/ld: cannot find -lwayland-egl
/usr/bin/ld: cannot find -lXcomposite
/usr/bin/ld: cannot find -lwayland-client
/usr/bin/ld: cannot find -lwayland-cursor
/usr/bin/ld: cannot find -lxcb-xinerama
/usr/bin/ld: cannot find -lXrender
/usr/bin/ld: cannot find -lxcb-xkb
/usr/bin/ld: cannot find -lxcb-sync
/usr/bin/ld: cannot find -lxcb-xfixes
/usr/bin/ld: cannot find -lxcb-randr
/usr/bin/ld: cannot find -lxcb-image
/usr/bin/ld: cannot find -lxcb-shm
/usr/bin/ld: cannot find -lxcb-keysyms
/usr/bin/ld: cannot find -lxcb-icccm
/usr/bin/ld: cannot find -lxcb-shape
/usr/bin/ld: cannot find -lxcb-glx
/usr/bin/ld: cannot find -lXi
/usr/bin/ld: cannot find -lSM
/usr/bin/ld: cannot find -lICE
/usr/bin/ld: cannot find -lxcb-render-util
/usr/bin/ld: cannot find -lxcb-render

[SGaist]

Hi and welcome to devnet,

If you want a full static build then you also need to build Qt with its dependencies as static libraries.

On a side note, don't forget the licensing implication when doing static builds.