diff options
| -rw-r--r-- | configure.ac | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/configure.ac b/configure.ac index 719ece7c..beef03f4 100644 --- a/configure.ac +++ b/configure.ac @@ -157,38 +157,59 @@ AC_PATH_PROGS([QEMU],[$with_qemu],[no], test "x$QEMU" = "xno" && AC_MSG_ERROR([qemu must be installed]) AC_DEFINE_UNQUOTED([QEMU],["$QEMU"],[Location of qemu binary.]) -dnl Check that the chosen qemu has vmchannel support. -dnl http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html +dnl Check that the chosen qemu has vmchannel support or we can +dnl fallback to null vmchannel (still using SLIRP). See the +dnl discussion in the README file. if test "x$vmchannel_test" != "xno"; then - AC_MSG_CHECKING([for "guestfwd" support in $QEMU]) + AC_MSG_CHECKING([for guestfwd support in $QEMU]) if $QEMU --help | grep -sq guestfwd; then AC_MSG_RESULT([yes]) + vmchannel_guestfwd=guestfwd else AC_MSG_RESULT([no]) - AC_MSG_CHECKING([for "-net channel" support in $QEMU]) + # Note that this test must be conditional on the previous + # test failing. This is because recent qemu will throw + # up an SDL window and hang if we try to run this test. + AC_MSG_CHECKING([for "-net channel" (old guestfwd) support in $QEMU]) vmchannelout=`$QEMU -net channel /dev/zero 2>&1 ||:` echo "vmchannel test command output: $vmchannelout" >&AS_MESSAGE_LOG_FD if echo "$vmchannelout" | grep -sq "vmchannel wrong port number" ; then AC_MSG_RESULT([yes]) + vmchannel_guestfwd=net_channel else AC_MSG_RESULT([no]) - AC_MSG_FAILURE( -[I did not find vmchannel support in $QEMU. + vmchannel_guestfwd=no + fi + fi + + AC_MSG_CHECKING([for "-net user" (user mode network) support in $QEMU]) + if $QEMU --help | grep -sq -- "-net user"; then + AC_MSG_RESULT([yes]) + vmchannel_net_user=yes + else + AC_MSG_RESULT([no]) + vmchannel_net_user=no + fi -vmchannel support is vital for libguestfs to operate. You need a version -of qemu >= 0.10, or the following patch backported to earlier versions: + if test "x$vmchannel_net_user" = "xno" -a "x$vmchannel_guestfwd" = "xno"; then + AC_MSG_FAILURE( +[I did not find user mode network or vmchannel support in +$QEMU. -http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html +Either user mode networking or vmchannel support is vital for +libguestfs to operate. + +Please read the relevant section in the README file for more +information about this. You can override this test by setting the environment variable -vmchannel_test=no However if you don't have vmchannel support +vmchannel_test=no However if you don't have the right support in your qemu, then this just delays the pain. If I am using the wrong qemu or you want to compile qemu from source and install it in another location, then you should configure with the --with-qemu option. ]) - fi fi fi |