Enable VDE by default if library is present.

VDE isn't used unless the user explicitly asks for it so if the library is
present on the system, we should include support for it.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4931 c046a42c-6fe2-441c-8c8c-71466251a162

configure

@@ -89,7 +89,7 @@ mingw32="no"
 EXESUF=""
 gdbstub="yes"
 slirp="yes"
-vde="no"
+vde="yes"
 fmod_lib=""
 fmod_inc=""
 vnc_tls="yes"
@@ -281,7 +281,7 @@ for opt do
   ;;
   --disable-slirp) slirp="no"
   ;;
-  --enable-vde) vde="yes"
+  --disable-vde) vde="no"
   ;;
   --disable-kqemu) kqemu="no"
   ;;
@@ -435,7 +435,7 @@ echo "  --fmod-lib               path to FMOD library"
 echo "  --fmod-inc               path to FMOD includes"
 echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"
 echo "  --sparc_cpu=V            Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"
-echo "  --enable-vde             enable support for vde network [$vde]"
+echo "  --disable-vde            disable support for vde network"
 echo ""
 echo "NOTE: The object files are built at the place where configure is launched"
 exit 1
@@ -735,11 +735,7 @@ EOF
     if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
         :
     else
-        echo
-        echo "Error: VDE check failed"
-        echo "Make sure to have the VDE libs and headers installed."
-        echo
-        exit 1
+        vde="no"
     fi
 fi