[libvirt] [PATCH] configure: improve misleading libnl3-devel missing error message

[Shanzhi Yu]

When build libvirt from source with netcf-devel installed, it
will report error "libnl-devel >=3.0 is required for macvtap
support", actually it requires libnl3-devel

Signed-off-by: Shanzhi Yu <shyu at redhat.com>
---
 configure.ac | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 0062d5d..5b0820a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2613,7 +2613,11 @@ if test "$with_linux" = "yes"; then
              [whether the netlink v1 library is available])
         ], [
             if test "$with_macvtap" = "yes"; then
-                AC_MSG_ERROR([libnl-devel >= $LIBNL_REQUIRED is required for macvtap support])
+                    if test "$LIBNL_REQUIRED" = "3.0";then
+                        AC_MSG_ERROR([libnl3-devel >= $LIBNL_REQUIRED is required for macvtap support])
+                    else
+                        AC_MSG_ERROR([libnl-devel >= $LIBNL_REQUIRED is required for macvtap support])
+                    fi
             fi
         ])
     fi
-- 
1.8.3.1