X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;ds=sidebyside;f=configure.ac;h=38301611fd37adfa1f98d93f1e760bab614582db;hb=d5cc91cf18b2c08b0041345a69fe137d2cb6085d;hp=f7b1c999372e0fe3e4574211acea7a0b34c02c04;hpb=73f89a81749711a2b5a5fa37cd66a7f282404c5a;p=libguestfs.git

diff --git a/configure.ac b/configure.ac
index f7b1c99..3830161 100644
--- a/configure.ac
+++ b/configure.ac
@@ -310,6 +310,19 @@ AC_DEFINE_UNQUOTED([QEMU],["$QEMU"],[Location of qemu binary.])
 
 dnl Check that the chosen qemu has virtio-serial support.
 if test "x$vmchannel_test" != "xno"; then
+    AC_MSG_CHECKING([that $QEMU -help works])
+    if $QEMU -help > /dev/null 2>&1; then
+        AC_MSG_RESULT([yes])
+    else
+        AC_MSG_RESULT([no])
+        AC_MSG_FAILURE(
+[$QEMU -help: command failed.
+
+This could be a very old version of qemu, or qemu might not be
+working.
+])
+    fi
+
     AC_MSG_CHECKING([for virtio-serial support in $QEMU])
     if $QEMU -nographic -device \? 2>&1 | grep -sq virtio-serial; then
         AC_MSG_RESULT([yes])