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

fusl/include/iconv.h

Index: fusl/include/iconv.h
diff --git a/fusl/include/iconv.h b/fusl/include/iconv.h
new file mode 100644
index 0000000000000000000000000000000000000000..ebe9bfda3926a6a532b4aefc1db8e06a16ec0cdf
--- /dev/null
+++ b/fusl/include/iconv.h
@@ -0,0 +1,24 @@
+#ifndef _ICONV_H
+#define _ICONV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+
+#define __NEED_size_t
+
+#include <bits/alltypes.h>
+
+typedef void *iconv_t;
+
+iconv_t iconv_open(const char *, const char *);
+size_t iconv(iconv_t, char **__restrict, size_t *__restrict, char **__restrict, size_t *__restrict);
+int iconv_close(iconv_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif