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systemd.m4
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# systemd.m4 - Macros to check for and enable systemd -*- Autoconf -*-
#
# Copyright (C) 2014 Luis R. Rodriguez <[email protected]>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; If not, see <http://www.gnu.org/licenses/>.
dnl Some optional path options
AC_DEFUN([AX_SYSTEMD_OPTIONS], [
AC_ARG_WITH(systemd,
AS_HELP_STRING([--with-systemd=DIR],
[set directory for systemd service files [PREFIX/lib/systemd/system]]),
[SYSTEMD_DIR="$withval"],[SYSTEMD_DIR=""])
AC_SUBST(SYSTEMD_DIR)
AC_ARG_WITH(systemd-modules-load,
AS_HELP_STRING([--with-systemd-modules-load=DIR],
[set directory for systemd modules load files [PREFIX/lib/modules-load.d/]]),
[SYSTEMD_MODULES_LOAD="$withval"], [SYSTEMD_MODULES_LOAD=""])
AC_SUBST(SYSTEMD_MODULES_LOAD)
])
AC_DEFUN([AX_ENABLE_SYSTEMD_OPTS], [
AX_ARG_DEFAULT_ENABLE([systemd], [Disable systemd support])
AX_SYSTEMD_OPTIONS()
])
AC_DEFUN([AX_ALLOW_SYSTEMD_OPTS], [
AX_ARG_DEFAULT_DISABLE([systemd], [Enable systemd support])
AX_SYSTEMD_OPTIONS()
])
AC_DEFUN([AX_CHECK_SYSTEMD_LIBS], [
PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon],,
[PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 209])]
)
dnl pkg-config older than 0.24 does not set these for
dnl PKG_CHECK_MODULES() worth also noting is that as of version 208
dnl of systemd pkg-config --cflags currently yields no extra flags yet.
AC_SUBST([SYSTEMD_CFLAGS])
AC_SUBST([SYSTEMD_LIBS])
AS_IF([test "x$SYSTEMD_DIR" = x], [
dnl In order to use the line below we need to fix upstream systemd
dnl to properly ${prefix} for child variables in
dnl src/core/systemd.pc.in but this is a bit complex at the
dnl moment as they depend on another rootprefix, which can vary
dnl from prefix in practice. We provide our own definition as we
dnl *know* where systemd will dump this to, but this does limit
dnl us to stick to a non custom systemdsystemunitdir, to work
dnl around this we provide the additional configure option
dnl --with-systemd where you can specify the directory for the unit
dnl files. It would also be best to just extend the upstream
dnl pkg-config pkg.m4 with an AC_DEFUN() to do this neatly.
dnl SYSTEMD_DIR="`$PKG_CONFIG --define-variable=prefix=$PREFIX --variable=systemdsystemunitdir systemd`"
SYSTEMD_DIR="\$(prefix)/lib/systemd/system/"
], [])
AS_IF([test "x$SYSTEMD_DIR" = x], [
AC_MSG_ERROR([SYSTEMD_DIR is unset])
], [])
dnl There is no variable for this yet for some reason
AS_IF([test "x$SYSTEMD_MODULES_LOAD" = x], [
SYSTEMD_MODULES_LOAD="\$(prefix)/lib/modules-load.d/"
], [])
AS_IF([test "x$SYSTEMD_MODULES_LOAD" = x], [
AC_MSG_ERROR([SYSTEMD_MODULES_LOAD is unset])
], [])
])
AC_DEFUN([AX_CHECK_SYSTEMD], [
dnl Respect user override to disable
AS_IF([test "x$enable_systemd" != "xno"], [
AS_IF([test "x$systemd" = "xy" ], [
AC_DEFINE([HAVE_SYSTEMD], [1], [Systemd available and enabled])
systemd=y
AX_CHECK_SYSTEMD_LIBS()
],[
AS_IF([test "x$enable_systemd" = "xyes"],
[AC_MSG_ERROR([Unable to find systemd development library])],
[systemd=n])
])
],[systemd=n])
])
AC_DEFUN([AX_CHECK_SYSTEMD_ENABLE_AVAILABLE], [
PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon], [systemd="y"],[
PKG_CHECK_MODULES([SYSTEMD], [libsystemd >= 209],
[systemd="y"],[systemd="n"])
])
])
dnl Enables systemd by default and requires a --disable-systemd option flag
dnl to configure if you want to disable.
AC_DEFUN([AX_ENABLE_SYSTEMD], [
AX_ENABLE_SYSTEMD_OPTS()
AX_CHECK_SYSTEMD()
])
dnl Systemd will be disabled by default and requires you to run configure with
dnl --enable-systemd to look for and enable systemd.
AC_DEFUN([AX_ALLOW_SYSTEMD], [
AX_ALLOW_SYSTEMD_OPTS()
AX_CHECK_SYSTEMD()
])
dnl Systemd will be disabled by default but if your build system is detected
dnl to have systemd build libraries it will be enabled. You can always force
dnl disable with --disable-systemd
AC_DEFUN([AX_AVAILABLE_SYSTEMD], [
AX_ALLOW_SYSTEMD_OPTS()
AX_CHECK_SYSTEMD_ENABLE_AVAILABLE()
AX_CHECK_SYSTEMD()
])