1 files changed, 42 insertions, 0 deletions
diff --git a/packaging/cmake/Modules/NetdataDetectSystemd.cmake b/packaging/cmake/Modules/NetdataDetectSystemd.cmake
new file mode 100644
index 000000000..5c0e6e09e
--- /dev/null
+++ b/packaging/cmake/Modules/NetdataDetectSystemd.cmake
@@ -0,0 +1,42 @@
+# CMake Module to handle all the systemd-related checks for Netdata.
+#
+# Copyright (c) 2024 Netdata Inc.
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+macro(detect_systemd)
+    find_library(SYSTEMD_LIBRARY NAMES systemd)
+
+    set(ENABLE_DSYSTEMD_DBUS NO)
+    pkg_check_modules(SYSTEMD libsystemd)
+
+    if(SYSTEMD_FOUND)
+        set(CMAKE_REQUIRED_LIBRARIES_BEFORE_SYSTEMD "${CMAKE_REQUIRED_LIBRARIES}")
+        set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES};${SYSTEMD_LIBRARIES}")
+
+        check_c_source_compiles("
+        #include <systemd/sd-journal.h>
+
+        int main() {
+            int x = SD_JOURNAL_OS_ROOT;
+            return 0;
+        }" HAVE_SD_JOURNAL_OS_ROOT)
+
+        check_symbol_exists(SD_JOURNAL_OS_ROOT "systemd/sd-journal.h" HAVE_SD_JOURNAL_OS_ROOT)
+        check_symbol_exists(sd_journal_open_files_fd "systemd/sd-journal.h" HAVE_SD_JOURNAL_OPEN_FILES_FD)
+        check_symbol_exists(sd_journal_restart_fields "systemd/sd-journal.h" HAVE_SD_JOURNAL_RESTART_FIELDS)
+        check_symbol_exists(sd_journal_get_seqnum "systemd/sd-journal.h" HAVE_SD_JOURNAL_GET_SEQNUM)
+
+        check_symbol_exists(sd_bus_default_system "systemd/sd-bus.h" HAVE_SD_BUS_DEFAULT_SYSTEM)
+        check_symbol_exists(sd_bus_call_method "systemd/sd-bus.h" HAVE_SD_BUS_CALL_METHOD)
+        check_symbol_exists(sd_bus_message_enter_container "systemd/sd-bus.h" HAVE_SD_BUS_MESSAGE_ENTER_CONTAINER)
+        check_symbol_exists(sd_bus_message_read "systemd/sd-bus.h" HAVE_SD_BUS_MESSAGE_READ)
+        check_symbol_exists(sd_bus_message_exit_container "systemd/sd-bus.h" HAVE_SD_BUS_MESSAGE_EXIT_CONTAINER)
+
+        set(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES_BEFORE_SYSTEMD}")
+
+        set(HAVE_SYSTEMD True)
+        if(HAVE_SD_BUS_DEFAULT_SYSTEM AND HAVE_SD_BUS_CALL_METHOD AND HAVE_SD_BUS_MESSAGE_ENTER_CONTAINER AND HAVE_SD_BUS_MESSAGE_READ AND HAVE_SD_BUS_MESSAGE_EXIT_CONTAINER)
+            set(ENABLE_SYSTEMD_DBUS YES)
+        endif()
+    endif()
+endmacro()