[Mesa-stable] [PATCH] configure.ac: check for libdrm when using VL with X11

[Emil Velikov]

From: Emil Velikov <emil.velikov at collabora.com>

The X11 specific code uses libdrm, yet we are missing the dependency.
This has gone unnoticed since all drivers which use VL already mandate
the library.

Note: this is applicable only for the stable branches.

Cc: Alyssa Rosenzweig <alyssa at rosenzweig.io>
Cc: <mesa-stable at lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.velikov at collabora.com>
---
Alyssa this should resolve the failure with minimal churn. Please let
me know if it works on your end or not.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 1ef68fe68e6..b288ecbd265 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2357,7 +2357,7 @@ if test "x$enable_xvmc" = xyes -o \
         "x$enable_omx_tizonia" = xyes -o \
         "x$enable_va" = xyes; then
     if echo $platforms | grep -q "x11"; then
-        PKG_CHECK_MODULES([VL], [x11-xcb xcb xcb-dri2 >= $XCBDRI2_REQUIRED])
+        PKG_CHECK_MODULES([VL], [x11-xcb xcb xcb-dri2 >= $XCBDRI2_REQUIRED libdrm >= $LIBDRM_REQUIRED])
     fi
     need_gallium_vl_winsys=yes
 fi
-- 
2.21.0