From 2b21eec8d423d15c97227567834ce978f8cae42c Mon Sep 17 00:00:00 2001 From: Richard Jones Date: Sat, 25 Apr 2009 08:36:52 +0100 Subject: [PATCH] Added configure test for qemu vmchannel support. --- README | 3 ++- configure.ac | 28 ++++++++++++++++++++++++++++ 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/README b/README index c4bc1ea..252e595 100644 --- a/README +++ b/README @@ -28,7 +28,8 @@ For discussion please use the fedora-virt mailing list: Requirements ---------------------------------------------------------------------- -- recent QEMU with vmchannel support +- recent QEMU >= 0.10 with vmchannel support + http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html - febootstrap >= 1.5 diff --git a/configure.ac b/configure.ac index d21c165..41b6646 100644 --- a/configure.ac +++ b/configure.ac @@ -73,6 +73,34 @@ AC_PATH_PROGS([QEMU],[$with_qemu],[no], test "x$QEMU" = "xno" && AC_MSG_ERROR([qemu must be installed]) AC_DEFINE_UNQUOTED([QEMU],["$QEMU"],[Location of qemu binary.]) +dnl Check that the chosen qemu has vmchannel support. +dnl http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html +if test "x$vmchannel_test" != "xno"; then + AC_MSG_CHECKING([for vmchannel 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([no]) + AC_MSG_FAILURE( +[I did not find vmchannel support in $QEMU. + +vmchannel support is vital for libguestfs to operate. You need a version +of qemu >= 0.10, or the following patch backported to earlier versions: + +http://lists.gnu.org/archive/html/qemu-devel/2009-02/msg01042.html + +You can override this test by setting the environment variable +vmchannel_test=no However if you don't have vmchannel 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 + AC_MSG_RESULT([yes]) +fi + dnl Check for febootstrap etc. AC_CHECK_PROG([FEBOOTSTRAP], [febootstrap],[febootstrap],[no]) -- 1.8.3.1