prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
xthreadlib=-lpthread
Name: X11
Description: X Library
Version: 1.3.3
Requires: xproto kbproto
Requires.private: xcb >= 1.1.92
Cflags: -I${includedir} 
Libs: -L${libdir} -lX11
Libs.private: -lpthread