Linux heracles.o2switch.net 4.18.0-553.62.1.lve.el8.x86_64 #1 SMP Mon Jul 21 17:50:35 UTC 2025 x86_64

//lib64/pkgconfig/xcb.pc

 prefix=/usr
exec_prefix=/usr
libdir=/usr/lib64
includedir=/usr/include
xcbproto_version=1.13

Name: XCB
Description: X-protocol C Binding
Version: 1.13.1
Requires.private: xau >= 0.99.2
Libs: -L${libdir} -lxcb
Libs.private: 
Cflags: -I${includedir}