These modules are only used for tests that don't get installed, and the
automatic detection without explicit dependencies means that a build can find
e.g. xshmfence at configure time but then it's been removed from the sysroot by
the time compile happens.

As the tests don't get installed, just disable the checks.

Upstream-Status: Inappropriate [OE-specific]
Signed-off-by: Ross Burton <ross.burton@intel.com>

diff --git a/configure.ac b/configure.ac
index bd654f3..78a0e0d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -251 +251 @@ fi
-PKG_CHECK_MODULES(X11_DRI3, [xcb-dri3 xcb-sync xcb-present x11-xcb xshmfence x11 xrender xext libdrm], [x11_dri3="yes"], [x11_dri3="no"])
+#PKG_CHECK_MODULES(X11_DRI3, [xcb-dri3 xcb-sync xcb-present x11-xcb xshmfence x11 xrender xext libdrm], [x11_dri3="yes"], [x11_dri3="no"])