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# - Try to find LibSystemd, it is expected find_package(PkgConfig) was called before
#
# Once done this will define
#
# LIBSYSTEMD_FOUND - system has LibSystemd
# LIBSYSTEMD_INCLUDE_DIRS - the LibSystemd include directory
# LIBSYSTEMD_LIBRARIES - link these to use LibSystemd
# SYSTEMD_UNIT_DIR - directory with systemd system unit files
#
# Author Michal Vasko <mvasko@cesnet.cz>
# Copyright (c) 2022 CESNET, z.s.p.o.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
include(FindPackageHandleStandardArgs)
if(LIBSYSTEMD_LIBRARIES AND LIBSYSTEMD_INCLUDE_DIRS AND SYSTEMD_UNIT_DIR)
# in cache already
set(LIBSYSTEMD_FOUND TRUE)
else()
find_path(LIBSYSTEMD_INCLUDE_DIR
NAMES
systemd/sd-daemon.h
PATHS
/usr/include
/usr/local/include
/opt/local/include
/sw/include
${CMAKE_INCLUDE_PATH}
${CMAKE_INSTALL_PREFIX}/include
)
find_library(LIBSYSTEMD_LIBRARY
NAMES
systemd
libsystemd
PATHS
/usr/lib
/usr/lib64
/usr/local/lib
/usr/local/lib64
/opt/local/lib
/sw/lib
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
if(NOT SYSTEMD_UNIT_DIR)
execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --define-variable=rootprefix=${CMAKE_INSTALL_PREFIX} --variable=systemdsystemunitdir systemd
OUTPUT_VARIABLE SYSTEMD_UNIT_DIR)
string(REGEX REPLACE "[ \t\n]+" "" SYSTEMD_UNIT_DIR "${SYSTEMD_UNIT_DIR}")
endif()
set(LIBSYSTEMD_INCLUDE_DIRS ${LIBSYSTEMD_INCLUDE_DIR})
set(LIBSYSTEMD_LIBRARIES ${LIBSYSTEMD_LIBRARY})
mark_as_advanced(LIBSYSTEMD_INCLUDE_DIRS LIBSYSTEMD_LIBRARIES)
# handle the QUIETLY and REQUIRED arguments and set LIBSYSTEMD_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args(LibSystemd FOUND_VAR LIBSYSTEMD_FOUND
REQUIRED_VARS LIBSYSTEMD_LIBRARY LIBSYSTEMD_INCLUDE_DIR SYSTEMD_UNIT_DIR)
endif()
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