On Thu, 4 May 2017, Graeme Geldenhuys wrote:
On 2017-05-04 13:21, Mark Morgan Lloyd wrote:
text-mode console or over something really crude like telnet... and I
hope you're doing that for fpGUI since you keep telling us how good it
is :-)
As I said, I do that often in my own (and commercial) applications that
use fpGUI. The fpGUI framework itself also has some extra checks in to
see if a GUI environment is available, and will exit gracefully with a
error message if such an environment doesn't exist.
All this fails if the needed libraries are not available, and they are
compiled in statically for X.
home: >ldd fpguidemo
linux-vdso.so.1 => (0x00007fffbfbdb000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6
(0x00007ff823a12000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6
(0x00007ff8236d8000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6
(0x00007ff8234c5000)
libXft.so.2 => /usr/lib/x86_64-linux-gnu/libXft.so.2
(0x00007ff8232b0000)
libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1
(0x00007ff82306d000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ff822e68000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ff822a9f000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ff822885000)
libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0
(0x00007ff82265f000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1
(0x00007ff82243d000)
libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1
(0x00007ff822233000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1
(0x00007ff822009000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007ff821dec000)
/lib64/ld-linux-x86-64.so.2 (0x0000562638a98000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ff821ae3000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6
(0x00007ff8218de000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6
(0x00007ff8216d8000)
We have lots of headless server instances where the X libs are simply not
installed. So the binary will not even start, and there will be no fallback
to text either.
The only solution for this situation are 2 binaries.
Michael.
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