Check for the presence of stdatomic.h before using it.

[meshlink] / src / event.c

diff --git a/src/event.c b/src/event.c
index 8ceab36240224ab8192a80071469ff8160f0cba0..a7c1f25a3f3b9b05edd94a6ee579b818dd5b3412 100644 (file)
--- a/src/event.c
+++ b/src/event.c
@@ -199,7 +199,9 @@ static void signalio_handler(event_loop_t *loop, void *data, int flags) {
        });
 
        if(sig) {
+#ifdef HAVE_STDATOMIC_H
                atomic_flag_clear(&sig->set);
+#endif
                sig->cb(loop, sig->data);
        }
 }
@@ -224,10 +226,14 @@ static void pipe_exit(event_loop_t *loop) {
 }
 
 void signal_trigger(event_loop_t *loop, signal_t *sig) {
+#ifdef HAVE_STDATOMIC_H
+
        if(atomic_flag_test_and_set(&sig->set)) {
                return;
        }
 
+#endif
+
        uint8_t signum = sig->signum;
        write(loop->pipefd[1], &signum, 1);
        return;
@@ -241,7 +247,9 @@ void signal_add(event_loop_t *loop, signal_t *sig, signal_cb_t cb, void *data, u
        sig->signum = signum;
        sig->node.data = sig;
 
+#ifdef HAVE_STDATOMIC_H
        atomic_flag_clear(&sig->set);
+#endif
 
        if(loop->pipefd[0] == -1) {
                pipe_init(loop);