Add a "fork" of musl as //fusl.

fusl/include/poll.h

Index: fusl/include/poll.h
diff --git a/fusl/include/poll.h b/fusl/include/poll.h
new file mode 100644
index 0000000000000000000000000000000000000000..7af737222f64386579a35b43327827ae55de8ec4
--- /dev/null
+++ b/fusl/include/poll.h
@@ -0,0 +1,52 @@
+#ifndef	_POLL_H
+#define	_POLL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+
+#include <bits/poll.h>
+
+#define POLLIN     0x001
+#define POLLPRI    0x002
+#define POLLOUT    0x004
+#define POLLERR    0x008
+#define POLLHUP    0x010
+#define POLLNVAL   0x020
+#define POLLRDNORM 0x040
+#define POLLRDBAND 0x080
+#ifndef POLLWRNORM
+#define POLLWRNORM 0x100
+#define POLLWRBAND 0x200
+#endif
+#ifndef POLLMSG
+#define POLLMSG    0x400
+#define POLLRDHUP  0x2000
+#endif
+
+typedef unsigned long nfds_t;
+
+struct pollfd
+{
+	int fd;
+	short events;
+	short revents;
+};
+
+int poll (struct pollfd *, nfds_t, int);
+
+#ifdef _GNU_SOURCE
+#define __NEED_time_t
+#define __NEED_struct_timespec
+#define __NEED_sigset_t
+#include <bits/alltypes.h>
+int ppoll(struct pollfd *, nfds_t, const struct timespec *, const sigset_t *);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif