headers: do not use siginfo_t if not defined

Simply avoid the trouble and use a void* if the define
is missing. We lose type safety, but who cares.
sigaction(2) says that siginfo_t requires _POSIX_C_SOURCE >= 199309L,
but we can be a bit more generous and use the same define
as /usr/include/signal.h.

diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
index 1ea97e47f88fcbea897868ae2b5b05065563c29e..9ded0226248cbde3878379a3c9b4284a4326a14a 100644 (file)
--- a/src/systemd/sd-event.h
+++ b/src/systemd/sd-event.h
@@ -69,7 +69,11 @@ typedef int (*sd_event_handler_t)(sd_event_source *s, void *userdata);
 typedef int (*sd_event_io_handler_t)(sd_event_source *s, int fd, uint32_t revents, void *userdata);
 typedef int (*sd_event_time_handler_t)(sd_event_source *s, uint64_t usec, void *userdata);
 typedef int (*sd_event_signal_handler_t)(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata);
+#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
 typedef int (*sd_event_child_handler_t)(sd_event_source *s, const siginfo_t *si, void *userdata);
+#else
+typedef void* sd_event_child_handler_t;
+#endif
 
 int sd_event_default(sd_event **e);