--- a/CMakeLists.txt	Wed Oct 20 15:45:18 2021 +0200
+++ b/CMakeLists.txt	Wed Oct 20 15:54:07 2021 +0200
@@ -58,6 +58,9 @@
 option(IRCCD_WITH_SSL "Enable SSL (requires OpenSSL)" On)
 option(IRCCD_WITH_TESTS "Enable unit tests" On)
 
+set(IRCCD_WITH_UID "irccd" CACHE STRING "Default uid to run irccd as")
+set(IRCCD_WITH_GID "irccd" CACHE STRING "Default gid to run irccd as")
+
 # Check presence of POSIX m library
 find_library(M_LIBRARY m libm)
 
@@ -81,6 +84,7 @@
 add_subdirectory(irccd)
 add_subdirectory(irccdctl)
 add_subdirectory(plugins)
+add_subdirectory(systemd)
 
 if (IRCCD_WITH_EXAMPLES)
 	add_subdirectory(examples)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/systemd/CMakeLists.txt	Wed Oct 20 15:54:07 2021 +0200
@@ -0,0 +1,43 @@
+#
+# CMakeLists.txt -- CMake build system for irccd
+#
+# Copyright (c) 2013-2021 David Demelier <markand@malikania.fr>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+project(systemd)
+
+find_program(systemd SYSTEMD_EXECUTABLE)
+
+if (SYSTEMD_EXECUTABLE)
+	set(default On)
+else ()
+	set(default Off)
+endif ()
+
+option(IRCCD_WITH_SYSTEMD "Install irccd.service" ${default})
+
+if (IRCCD_WITH_SYSTEMD)
+	set(PATH ${CMAKE_INSTALL_FULL_BINDIR}/irccd)
+
+	configure_file(
+		${systemd_SOURCE_DIR}/irccd.service.in
+		${systemd_BINARY_DIR}/irccd.service
+	)
+
+	install(
+		FILES ${systemd_BINARY_DIR}/irccd.service
+		DESTINATION ${CMAKE_INSTALL_LIBDIR}/systemd/system
+	)
+endif ()

--- a/systemd/irccd.service	Wed Oct 20 15:45:18 2021 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,11 +0,0 @@
-[Unit]
-Description=IRC Client Daemon
-After=network.target
-
-[Service]
-ExecStart=@PATH@
-User=@USER@
-Group=@GROUP@
-
-[Install]
-WantedBy=multi-user.target

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/systemd/irccd.service.in	Wed Oct 20 15:54:07 2021 +0200
@@ -0,0 +1,11 @@
+[Unit]
+Description=IRC Client Daemon
+After=network.target
+
+[Service]
+ExecStart=@PATH@
+User=@IRCCD_WITH_UID@
+Group=@IRCCD_WITH_GID@
+
+[Install]
+WantedBy=multi-user.target