libvirt/m4/virt-driver-libxl.m4
Daniel P. Berrange ed45361044 libxl: add explicit linkage to xenstore library
Since

  commit eee7bd4ecb
  Author: Joao Martins <joao.m.martins@oracle.com>
  Date:   Tue Jul 26 00:45:14 2016 +0100

    libxl: implement virDomainBlockStats

    Introduce initial support for domainBlockStats API

the libxl driver calls a couple of xenstore APIs, so it must explicitly
link to this library rather than rely on indirect linkage via libxl or
other xen libraries.

Reviewed-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2018-01-25 09:30:54 +00:00

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dnl The libxl driver
dnl
dnl Copyright (C) 2016 Red Hat, Inc.
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library. If not, see
dnl <http://www.gnu.org/licenses/>.
dnl
AC_DEFUN([LIBVIRT_DRIVER_ARG_LIBXL], [
LIBVIRT_ARG_WITH_FEATURE([LIBXL], [libxenlight], [check])
])
AC_DEFUN([LIBVIRT_DRIVER_CHECK_LIBXL], [
LIBXL_LIBS=""
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
old_with_libxl="$with_libxl"
LIBVIRT_CHECK_PKG([LIBXL], [xenlight], [4.4.0], [true])
if test "x$with_libxl" = "xyes" ; then
LIBXL_FIRMWARE_DIR=$($PKG_CONFIG --variable xenfirmwaredir xenlight)
LIBXL_EXECBIN_DIR=$($PKG_CONFIG --variable libexec_bin xenlight)
fi
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
old_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $LIBXL_API_VERSION"
LIBVIRT_CHECK_LIB([LIBXL], [xenlight], [libxl_ctx_alloc], [libxl.h], [fail="1"])
CFLAGS="$old_CFLAGS"
if test $fail = 1; then
AC_MSG_ERROR([You must install the libxl Library from Xen >= 4.4 to compile libxenlight driver with -lxl])
fi
fi
if test "$with_libxl" = "yes"; then
old_LIBS="$LIBS"
old_CFLAGS="$CFLAGS"
LIBXL_CFLAGS="$LIBXL_CFLAGS $LIBXL_API_VERSION"
dnl If building with libxl, use the libxl utility header and lib too
AC_CHECK_HEADERS([libxlutil.h])
LIBXL_LIBS="$LIBXL_LIBS -lxlutil"
if test "x$LIBXL_FIRMWARE_DIR" != "x"; then
AC_DEFINE_UNQUOTED([LIBXL_FIRMWARE_DIR], ["$LIBXL_FIRMWARE_DIR"], [directory containing Xen firmware blobs])
fi
if test "x$LIBXL_EXECBIN_DIR" != "x"; then
AC_DEFINE_UNQUOTED([LIBXL_EXECBIN_DIR], ["$LIBXL_EXECBIN_DIR"], [directory containing Xen libexec binaries])
fi
dnl Check if the xtl_* infrastructure is in libxentoollog
dnl (since Xen 4.7) if not then assume it is in libxenctrl
dnl (as it was for 4.6 and earler)
AC_CHECK_LIB([xentoollog], [xtl_createlogger_stdiostream], [
LIBXL_LIBS="$LIBXL_LIBS -lxenstore -lxentoollog"
],[
LIBXL_LIBS="$LIBXL_LIBS -lxenstore -lxenctrl"
])
dnl Check if libxl_domain_config_from_json is available for domXML to
dnl libxl_domain_config tests
LIBS="$LIBS -lxenlight -lxenctrl"
AC_CHECK_FUNCS([libxl_domain_config_from_json])
CFLAGS="$old_CFLAGS"
LIBS="$old_LIBS"
fi
AC_SUBST([LIBXL_CFLAGS])
AC_SUBST([LIBXL_LIBS])
])
AC_DEFUN([LIBVIRT_RESULT_LIBXL], [
LIBVIRT_RESULT_LIB([LIBXL])
])
AC_DEFUN([LIBVIRT_DRIVER_RESULT_LIBXL], [
LIBVIRT_RESULT([libxl], [$with_libxl])
])