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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [dri3] Building mesa fails with dri3 enabled"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80848#c14">Comment # 14</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [dri3] Building mesa fails with dri3 enabled"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=80848">bug 80848</a>
              from <span class="vcard"><a class="email" href="mailto:juhapekka.heikkila@gmail.com" title="Juha-Pekka Heikkilä <juhapekka.heikkila@gmail.com>"> <span class="fn">Juha-Pekka Heikkilä</span></a>
</span></b>
        <pre>I paste the contents here for both xcb.pc files as they're short.
Directories/files where they point are valid, I don't see anything wrong in
these.

/opt/lib/pkgconfig/xcb.pc:
prefix=/opt
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
xcbproto_version=1.10

Name: XCB
Description: X-protocol C Binding
Version: 1.10
Requires.private: pthread-stubs xau >= 0.99.2 xdmcp
Libs: -L${libdir} -lxcb
Libs.private: 
Cflags: -I${includedir}

[EOF]

/usr/local/lib/pkgconfig/xcb.pc:
prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
xcbproto_version=1.9

Name: XCB
Description: X-protocol C Binding
Version: 1.9
Requires.private: pthread-stubs xau >= 0.99.2 xdmcp
Libs: -L${libdir} -lxcb
Libs.private: 
Cflags: -I${includedir}

[EOF]

Here I see changed just prefix, xcbproto_version and Version. New libxcb is at
its given location:

ls /opt/lib/libxcb.*
/opt/lib/libxcb.a  /opt/lib/libxcb.la  /opt/lib/libxcb.so  /opt/lib/libxcb.so.1
 /opt/lib/libxcb.so.1.1.0

ls /opt/include/xcb/
bigreq.h     dpms.h  glx.h      record.h  screensaver.h  sync.h    xc_misc.h 
xfixes.h    xkb.h     xselinux.h  xvmc.h
composite.h  dri2.h  present.h  render.h  shape.h        xcbext.h  xevie.h   
xinerama.h  xprint.h  xtest.h
damage.h     dri3.h  randr.h    res.h     shm.h          xcb.h     xf86dri.h 
xinput.h    xproto.h  xv.h

These were installed here with
make
sudo make install</pre>
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