tools: hide debug-gui help when building with -Ddebug-gui=false (!813) · Merge requests · libinput / libinput

Some distributions, like Fedora, compile libinput with the debug-gui option set to false.

Running "libinput debug-gui" indicates that the program is not installed; however, the help message suggests that the command is available.

Hide debug-gui from the help message when it is not included.

tools: hide debug-gui help when building with -Ddebug-gui=false