CMake Generate step failed. Build files cannot be regenerated correctly.

[xianghongai]

$ sudo ./build/build.sh 
-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE) 
-- Configuring done
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
X11_Xfixes_INCLUDE_PATH (ADVANCED)
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
X11_Xfixes_LIB (ADVANCED)
    linked by target "easy-gestured" in directory /home/xiang/Documents/easy-gesture++/service
X11_Xi_INCLUDE_PATH (ADVANCED)
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
X11_Xi_LIB (ADVANCED)
    linked by target "easy-gestured" in directory /home/xiang/Documents/easy-gesture++/service
X11_Xtst_INCLUDE_PATH (ADVANCED)
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
   used as include directory in directory /home/xiang/Documents/easy-gesture++/service
X11_Xtst_LIB (ADVANCED)
    linked by target "easy-gestured" in directory /home/xiang/Documents/easy-gesture++/service

CMake Error in CMakeLists.txt:
  Found relative path while evaluating include directories of
  "easy-gestured":

    "X11_Xtst_INCLUDE_PATH-NOTFOUND"



-- Generating done
CMake Generate step failed.  Build files cannot be regenerated correctly.

The original author has not been active for many years, Release an easy-gestured++?

[xianghongai]

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.1 LTS
Release:        22.04
Codename:       jammy

[ProgrammingLife]

I've successfully compiled it but then:

$ ./easy-gestured 

[1]    81560 segmentation fault (core dumped)  ./easy-gestured

Arch Linux.