I have libX11-devel. I also have the file /usr/lib64/libX11.so.6.


bull•Downloads/qjoypad-4.1.0/src» ./config [7:30:12]

Configuring QJoyPad installation...
------------------------------------------------------------

Device directory: /dev/input
-- Devices will be looked for in:
/dev/input/js0
/dev/input/js1
etc.

Prefix directory: /usr/local
-- Files to be installed in:
/usr/local/bin
/usr/local/doc
/usr/local/share/pixmaps

---------------------------------------------------------
If these settings are okay, go ahead and run 'make' and
then 'make install'.

To make changes, run ./config --help for details.

bull•Downloads/qjoypad-4.1.0/src» make [7:30:16]
g++ -Wl,-O1 -o qjoypad axis.o axis_edit.o axisw.o button.o button_edit.o buttonw.o event.o flash.o icon.o joypad.o joypadw.o joyslider.o keycode.o layout.o layout_edit.o main.o quickset.o getkey.o moc_axis.o moc_axis_edit.o moc_button.o moc_button_edit.o moc_flash.o moc_icon.o moc_joypad.o moc_joypadw.o moc_keycode.o moc_layout.o moc_getkey.o moc_layout_edit.o -L/usr/lib64 -lXtst -lQtGui -lQtCore -lpthread
/usr/bin/ld: keycode.o: undefined reference to symbol 'XKeycodeToKeysym'
/usr/bin/ld: note: 'XKeycodeToKeysym' is defined in DSO /usr/lib64/libX11.so.6 so try adding it to the linker command line
/usr/lib64/libX11.so.6: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make: *** [qjoypad] Error 1
bull•Downloads/qjoypad-4.1.0/src»

Did you take the time to Google the error....

https://fedoraproject.org/wiki/Featu...icitDSOLinking
https://fedoraproject.org/wiki/Under...gDSOLinkChange

I did Google the errors. I didn't see any of the links you posted.

The information in those sites looks greek to me. Does it mean there is a solution or isn't one?

Those were the first two links in Google. Yes, the solution should be in the second link. You're going to need to modify the Makefile for qjoypad and add -lX11. There is probably some variable in the Makefile that contains linker flags.

1 members found this post helpful.

Ref. your duplicate thread from today ..
http://www.linuxquestions.org/questi...linker-930323/
.. and post #4 by @weibullguy :
""modify the Makefile for qjoypad and add -lX11""

That's line 19 in qjoypad-4.1.0/src/Makefile :
.