1# systemd.m4 - Macros to check for and enable systemd          -*- Autoconf -*-
2#
3# Copyright (C) 2014 Luis R. Rodriguez <mcgrof@suse.com>
4#
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 2 of the License, or
8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful, but
11# WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13# General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program; If not, see <http://www.gnu.org/licenses/>.
17
18dnl Some optional path options
19AC_DEFUN([AX_SYSTEMD_OPTIONS], [
20	AC_ARG_WITH(systemd,
21		AS_HELP_STRING([--with-systemd=DIR],
22		[set directory for systemd service files [PREFIX/lib/systemd/system]]),
23		[SYSTEMD_DIR="$withval"],[SYSTEMD_DIR=""])
24	AC_SUBST(SYSTEMD_DIR)
25
26	AC_ARG_WITH(systemd-modules-load,
27		AS_HELP_STRING([--with-systemd-modules-load=DIR],
28		[set directory for systemd modules load files [PREFIX/lib/modules-load.d/]]),
29		[SYSTEMD_MODULES_LOAD="$withval"], [SYSTEMD_MODULES_LOAD=""])
30	AC_SUBST(SYSTEMD_MODULES_LOAD)
31])
32
33AC_DEFUN([AX_ENABLE_SYSTEMD_OPTS], [
34	AX_ARG_DEFAULT_ENABLE([systemd], [Disable systemd support])
35	AX_SYSTEMD_OPTIONS()
36])
37
38AC_DEFUN([AX_ALLOW_SYSTEMD_OPTS], [
39	AX_ARG_DEFAULT_DISABLE([systemd], [Enable systemd support])
40	AX_SYSTEMD_OPTIONS()
41])
42
43AC_DEFUN([AX_CHECK_SYSTEMD_LIBS], [
44	AS_IF([test "x$SYSTEMD_DIR" = x], [
45	    dnl In order to use the line below we need to fix upstream systemd
46	    dnl to properly ${prefix} for child variables in
47	    dnl src/core/systemd.pc.in but this is a bit complex at the
48	    dnl moment as they depend on another rootprefix, which can vary
49	    dnl from prefix in practice. We provide our own definition as we
50	    dnl *know* where systemd will dump this to, but this does limit
51	    dnl us to stick to a non custom systemdsystemunitdir, to work
52	    dnl around this we provide the additional configure option
53	    dnl --with-systemd where you can specify the directory for the unit
54	    dnl files. It would also be best to just extend the upstream
55	    dnl pkg-config  pkg.m4 with an AC_DEFUN() to do this neatly.
56	    dnl SYSTEMD_DIR="`$PKG_CONFIG --define-variable=prefix=$PREFIX --variable=systemdsystemunitdir systemd`"
57	    SYSTEMD_DIR="\$(prefix)/lib/systemd/system/"
58	], [])
59
60	AS_IF([test "x$SYSTEMD_DIR" = x], [
61	    AC_MSG_ERROR([SYSTEMD_DIR is unset])
62	], [])
63
64	dnl There is no variable for this yet for some reason
65	AS_IF([test "x$SYSTEMD_MODULES_LOAD" = x], [
66	    SYSTEMD_MODULES_LOAD="\$(prefix)/lib/modules-load.d/"
67	], [])
68
69	AS_IF([test "x$SYSTEMD_MODULES_LOAD" = x], [
70	    AC_MSG_ERROR([SYSTEMD_MODULES_LOAD is unset])
71	], [])
72])
73
74AC_DEFUN([AX_CHECK_SYSTEMD], [
75	dnl Respect user override to disable
76	AS_IF([test "x$enable_systemd" != "xno"], [
77	     AS_IF([test "x$systemd" = "xy" ], [
78		AC_DEFINE([HAVE_SYSTEMD], [1], [Systemd available and enabled])
79			systemd=y
80			AX_CHECK_SYSTEMD_LIBS()
81	    ],[
82		AS_IF([test "x$enable_systemd" = "xyes"],
83			[AC_MSG_ERROR([Unable to find systemd development library])],
84			[systemd=n])
85	    ])
86	],[systemd=n])
87])
88
89dnl Enables systemd by default and requires a --disable-systemd option flag
90dnl to configure if you want to disable.
91AC_DEFUN([AX_ENABLE_SYSTEMD], [
92	AX_ENABLE_SYSTEMD_OPTS()
93	AX_CHECK_SYSTEMD()
94])
95
96dnl Systemd will be disabled by default and requires you to run configure with
97dnl --enable-systemd to look for and enable systemd.
98AC_DEFUN([AX_ALLOW_SYSTEMD], [
99	AX_ALLOW_SYSTEMD_OPTS()
100	AX_CHECK_SYSTEMD()
101])
102
103dnl Systemd will be disabled by default but if your build system is detected
104dnl to have systemd build libraries it will be enabled. You can always force
105dnl disable with --disable-systemd
106AC_DEFUN([AX_AVAILABLE_SYSTEMD], [
107	AX_ALLOW_SYSTEMD_OPTS()
108	AX_CHECK_SYSTEMD()
109])
110