Add tigervnc #661
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Add tigervnc #661
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Update required for tigervnc FLTK release history: http://www.fltk.org/articles.php?L825
There is some logic in CMakeLists.txt to create the list of required
link libraries in FLTK_LIBRARIES. This depends on the output of
FindFLTK.cmake provided by cmake.
The logic seems to fail as several libraries are missing in the end:
[ 89%] Linking CXX executable vncviewer
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../x86_64-pc-linux-gnu/bin/ld:
/usr/lib/gcc/x86_64-pc-linux-gnu/7.3.0/../../../../lib64/libfltk.a(Fl_Window_shape.o):
undefined reference to symbol 'dlsym@@GLIBC_2.2.5'
/lib/libdl.so.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
vncviewer/CMakeFiles/vncviewer.dir/build.make:427: recipe for target
'vncviewer/vncviewer' failed
make[2]: *** [vncviewer/vncviewer] Error 1
Overwrite the computed FLTK_LIBRARIES with the output of
fltk-config --use-images --ldflags
which seems to enumerate the required libraries.
Xvnc is the X.org xserver with a framebuffer display (like Xvfb) but adapted by tigervnc to offer the framebuffer via the vnc protocol. Build instructions : https://github.com/TigerVNC/tigervnc/blob/7cc9f6ad07db1f4f7f141d229d2dc5035bd2f89d/BUILDING.txt#L97 Some configure option suggested by the above instructions are not recognized by the x.org xserver 1.19.6 configure script and removed: --disable-config-dbus --enable-install-libxf86config --with-fontdir --with-dri-driver-path The option --disable-xwayland has been added to avoid the creation of /usr/bin/Xwayland conflicting with the xorg-server package. Installation of a Xserver manpage has been disabled for the same reason.
Default the x-session to xfce4 instead of twm and a xterm.
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This updates FLTK (an X toolkit) and installs tigervnc. tigervnc include a VNC client (
vncviewer) and VNC server to share/export the X-screen via VNC ( `x0vncserver' ) and a complete X-Server to offer independent X-Session via VNC.