How to restrict linking of X server libraries with an application compiled for framebuffer

Kart

I have build a Qt 5.9.1 kit for x86 in my host Ubuntu 16.04. My target system only have frame buffer and i am running it using libqlinuxfb plugin.

ldd myapplication gives

	linux-gate.so.1 =>  (0xb776e000)
	libQt5Widgets.so.5 => /opt/qt/qt5.9.1x86/lib/libQt5Widgets.so.5 (0xb705d000)
	libQt5Gui.so.5 => /opt/qt/qt5.9.1x86/lib/libQt5Gui.so.5 (0xb6a17000)
	libQt5Core.so.5 => /opt/qt/qt5.9.1x86/lib/libQt5Core.so.5 (0xb64b5000)
	libstdc++.so.6 => /usr/lib/i386-linux-gnu/libstdc++.so.6 (0xb6324000)
	libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xb6307000)
	libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xb6151000)
	libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xb6134000)
	libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xb60de000)
	libGL.so.1 => /usr/lib/i386-linux-gnu/mesa/libGL.so.1 (0xb606e000)
	libpng12.so.0 => /lib/i386-linux-gnu/libpng12.so.0 (0xb6043000)
	libz.so.1 => /lib/i386-linux-gnu/libz.so.1 (0xb6028000)
	libicui18n.so.55 => /usr/lib/i386-linux-gnu/libicui18n.so.55 (0xb5db5000)
	libicuuc.so.55 => /usr/lib/i386-linux-gnu/libicuuc.so.55 (0xb5c1e000)
	libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xb5c19000)
	libglib-2.0.so.0 => /lib/i386-linux-gnu/libglib-2.0.so.0 (0xb5af0000)
	/lib/ld-linux.so.2 (0x800f8000)
	libexpat.so.1 => /lib/i386-linux-gnu/libexpat.so.1 (0xb5ac6000)
	libxcb-dri3.so.0 => /usr/lib/i386-linux-gnu/libxcb-dri3.so.0 (0xb5ac2000)
	libxcb-present.so.0 => /usr/lib/i386-linux-gnu/libxcb-present.so.0 (0xb5abd000)
	libxcb-sync.so.1 => /usr/lib/i386-linux-gnu/libxcb-sync.so.1 (0xb5ab5000)
	libxshmfence.so.1 => /usr/lib/i386-linux-gnu/libxshmfence.so.1 (0xb5ab2000)
	libglapi.so.0 => /usr/lib/i386-linux-gnu/libglapi.so.0 (0xb5a96000)
	libXext.so.6 => /usr/lib/i386-linux-gnu/libXext.so.6 (0xb5a81000)
	libXdamage.so.1 => /usr/lib/i386-linux-gnu/libXdamage.so.1 (0xb5a7c000)
	libXfixes.so.3 => /usr/lib/i386-linux-gnu/libXfixes.so.3 (0xb5a75000)
	libX11-xcb.so.1 => /usr/lib/i386-linux-gnu/libX11-xcb.so.1 (0xb5a72000)
	libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xb5927000)
	libxcb-glx.so.0 => /usr/lib/i386-linux-gnu/libxcb-glx.so.0 (0xb590c000)
	libxcb-dri2.so.0 => /usr/lib/i386-linux-gnu/libxcb-dri2.so.0 (0xb5905000)
	libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xb58df000)
	libXxf86vm.so.1 => /usr/lib/i386-linux-gnu/libXxf86vm.so.1 (0xb58d8000)
	libdrm.so.2 => /usr/lib/i386-linux-gnu/libdrm.so.2 (0xb58c5000)
	libicudata.so.55 => /usr/lib/i386-linux-gnu/libicudata.so.55 (0xb400d000)
	libpcre.so.3 => /lib/i386-linux-gnu/libpcre.so.3 (0xb3f97000)
	libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xb3f93000)
	libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xb3f8c000)

I want to avoid X server based library linking with my application. Can anyone help me with a way out ?

Thank you for you time.

SGaist

Hi,

What options did you pass to configure ?

Kart

@SGaist Default configurations by the qtcreator

qmake firstx86/firstx86.pro -spec linux-g++ CONFIG+=debug CONFIG+=qml_debug && /usr/bin/make qmake_all

Edited :
Are you asking about the options passed on to the build of Qt 5.9.1 ?

SGaist

Yes, the one you used to build your custom version of Qt.

Kart

@SGaist This is my configuration

./configure -opensource -confirm-license -skip wayland -no-egl -c++std c++11 -proprietary-codecs -v -I/opt/qt/qt5.9.1x86/include -L/opt/qt/qt5.9.1x86/lib -prefix /opt/qt/qt5.9.1x86

SGaist

From your options I don't see anywhere that you are disabling the xcb backend.

Kart

@SGaist Yes i have not disbaled xcb backend. But is it possible to build an application specifically for framebuffer ? Or the build will happen for all the plugins available ?

SGaist

The application stays generic, it’s just the backend plugin loaded that changes.