Re: [libvirt] [PATCH 61/89] m4/virt-libxl: properly check for required libxl version

On Fri, Dec 16, 2016 at 10:11:29 +0100, Pavel Hrdina wrote: > Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; > --- > m4/virt-driver-libxl.m4 | 18 ++++++++++++------ > 1 file changed, 12 insertions(+), 6 deletions(-) > > diff --git a/m4/virt-driver-libxl.m4 b/m4/virt-driver-libxl.m4 > index 2fdeaa506e..498cad3240 100644 > --- a/m4/virt-driver-libxl.m4 > +++ b/m4/virt-driver-libxl.m4 > @@ -28,6 +28,7 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [ > LIBXL_CFLAGS="" > LIBXL_FIRMWARE_DIR="" > LIBXL_EXECBIN_DIR="" > + LIBXL_API_VERSION="-DLIBXL_API_VERSION=0x040400" > > dnl search for libxl, aka libxenlight > dnl Xen > 4.5 introduced a pkgconfig file, check for it first > @@ -41,17 +42,22 @@ AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [ > dnl pkgconfig file not found, fallback to lib probe > if test "x$with_libxl" = "xno" ; then > with_libxl="$old_with_libxl" > + > + dnl LIBXL_API_VERSION 4.4.0 introduced a new parameter to > + dnl libxl_domain_create_restore for specifying restore parameters. > + dnl The libxl driver will make use of this new parameter for specifying > + dnl the Xen migration stream version. Specify LIBXL_API_VERSION to trigger > + dnl an error if there is too old xenlight > + CFLAGS="$CFLAGS $LIBXL_API_VERSION" > LIBVIRT_CHECK_LIB([LIBXL], [xenlight], [libxl_ctx_alloc], [libxl.h], [fail="1"]) > + CFLAGS="$old_CFLAGS" > + > if test $fail = 1; then > - AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.2 to compile libxenlight driver with -lxl]) > + AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.4 to compile libxenlight driver with -lxl]) I see. We actually do not support libxenlight 4.2. I guess the 4.4.0 requirement in the previous patch should be changed to 4.2.0 and fixed to 4.4.0 in this patch.