Edit File: x11.pc
prefix=/usr exec_prefix=/usr libdir=/usr/lib64 includedir=/usr/include xthreadlib=-lpthread Name: X11 Description: X Library Version: 1.6.7 Requires: xproto kbproto Requires.private: xcb >= 1.11.1 Cflags: -I${includedir} Libs: -L${libdir} -lX11 Libs.private: -lpthread