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

fusl/src/network/res_mkquery.c

+#include <resolv.h>
+#include <string.h>
+#include <time.h>
+#include "libc.h"
+
+int __res_mkquery(int op, const char *dname, int class, int type,
+        const unsigned char *data, int datalen,
+        const unsigned char *newrr, unsigned char *buf, int buflen)
+{
+        int id, i, j;
+        unsigned char q[280];
+        struct timespec ts;
+        size_t l = strnlen(dname, 255);
+        int n;
+
+        if (l && dname[l-1]=='.') l--;
+        n = 17+l+!!l;
+        if (l>253 || buflen<n || op>15u || class>255u || type>255u)
+                return -1;
+
+        /* Construct query template - ID will be filled later */
+        memset(q, 0, n);
+        q[2] = op*8 + 1;
+        q[5] = 1;
+        memcpy((char *)q+13, dname, l);
+        for (i=13; q[i]; i=j+1) {
+                for (j=i; q[j] && q[j] != '.'; j++);
+                if (j-i-1u > 62u) return -1;
+                q[i-1] = j-i;
+        }
+        q[i+1] = type;
+        q[i+3] = class;
+
+        /* Make a reasonably unpredictable id */
+        clock_gettime(CLOCK_REALTIME, &ts);
+        id = ts.tv_nsec + ts.tv_nsec/65536UL & 0xffff;
+        q[0] = id/256;
+        q[1] = id;
+
+        memcpy(buf, q, n);
+        return n;
+}
+
+weak_alias(__res_mkquery, res_mkquery);