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[libvirt] [PATCH] Fix macvtap detection by also checking for IFLA_VF_MAX



since this isn't available on older kernels such as Debian Squeeze's
2.6.32. This make --with-macvtap=check work as expected.
---
 configure.ac |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

O.k. to apply?
Cheers,
 -- Guido

diff --git a/configure.ac b/configure.ac
index 3f5b3ff..53c9b34 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2534,7 +2534,8 @@ AC_MSG_CHECKING([whether to compile with macvtap support])
 if test "$with_macvtap" != "no" ; then
     AC_TRY_COMPILE([ #include <sys/socket.h>
                      #include <linux/rtnetlink.h> ],
-                   [ int x = MACVLAN_MODE_BRIDGE; ],
+                   [ int x = MACVLAN_MODE_BRIDGE;
+                     int y = IFLA_VF_MAX; ],
                    [ with_macvtap=yes ],
                    [ if test "$with_macvtap" = "yes" ; then
                          AC_MSG_ERROR([Installed linux headers don't show support for macvtap device.])
-- 
1.7.9.5


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