Rename xcb-xfree86dri.pc.in to xcb-xf86dri.pc.in to match libXCBxf86dri, change its Libs line to use -lXCBxf86dri, and change configure.ac and Makefile.am accordingly.

Makefile.am

@@ -17,7 +17,7 @@ xcb-shape.pc \
 xcb-shm.pc \
 xcb-sync.pc \
 xcb-xevie.pc \
-xcb-xfree86dri.pc \
+xcb-xf86dri.pc \
 xcb-xfixes.pc \
 xcb-xprint.pc \
 xcb-xtest.pc \
@@ -39,7 +39,7 @@ xcb-shape.pc.in \
 xcb-shm.pc.in \
 xcb-sync.pc.in \
 xcb-xevie.pc.in \
-xcb-xfree86dri.pc.in \
+xcb-xf86dri.pc.in \
 xcb-xfixes.pc.in \
 xcb-xprint.pc.in \
 xcb-xtest.pc.in \

configure.ac

@@ -120,6 +120,6 @@ AC_SUBST(CWARNFLAGS)
 GCC_CHECK_VISIBILITY()
 
 AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
-AC_CONFIG_FILES([xcb.pc xcb-composite.pc xcb-damage.pc xcb-dpms.pc xcb-glx.pc xcb-randr.pc xcb-record.pc xcb-render.pc xcb-res.pc xcb-screensaver.pc xcb-shape.pc xcb-shm.pc xcb-sync.pc xcb-xevie.pc xcb-xfree86dri.pc xcb-xfixes.pc xcb-xprint.pc xcb-xtest.pc xcb-xv.pc xcb-xvmc.pc])
+AC_CONFIG_FILES([xcb.pc xcb-composite.pc xcb-damage.pc xcb-dpms.pc xcb-glx.pc xcb-randr.pc xcb-record.pc xcb-render.pc xcb-res.pc xcb-screensaver.pc xcb-shape.pc xcb-shm.pc xcb-sync.pc xcb-xevie.pc xcb-xf86dri.pc xcb-xfixes.pc xcb-xprint.pc xcb-xtest.pc xcb-xv.pc xcb-xvmc.pc])
 
 AC_OUTPUT

xcb-xf86dri.pc.in

@@ -7,5 +7,5 @@ Name: XCB XFree86-DRI
 Description: XCB XFree86-DRI Extension
 Version: @PACKAGE_VERSION@
 Requires: xcb
-Libs: -L${libdir} -lXCBxfree86dri
+Libs: -L${libdir} -lXCBxf86dri
 Cflags: -I${includedir}