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

fusl/src/legacy/futimes.c

Index: fusl/src/legacy/futimes.c
diff --git a/fusl/src/legacy/futimes.c b/fusl/src/legacy/futimes.c
new file mode 100644
index 0000000000000000000000000000000000000000..1c19eb1fa1da143049229b32d474ce2680876f5f
--- /dev/null
+++ b/fusl/src/legacy/futimes.c
@@ -0,0 +1,14 @@
+#define _GNU_SOURCE
+#include <sys/stat.h>
+#include <sys/time.h>
+
+int futimes(int fd, const struct timeval tv[2])
+{
+	struct timespec times[2];
+	if (!tv) return futimens(fd, 0);
+	times[0].tv_sec  = tv[0].tv_sec;
+	times[0].tv_nsec = tv[0].tv_usec * 1000;
+	times[1].tv_sec  = tv[1].tv_sec;
+	times[1].tv_nsec = tv[1].tv_usec * 1000;
+	return futimens(fd, times);
+}