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//lib64/pkgconfig/xcb-screensaver.pc

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

Name: XCB Screensaver
Description: XCB Screensaver Extension
Version: 1.13.1
Requires.private: xcb
Libs: -L${libdir} -lxcb-screensaver
Cflags: -I${includedir}