CROSS_TO_WASM build fixes

sys/libnh/libnhmain.c

@@ -51,7 +51,7 @@ extern void init_linux_cons(void);
 
 static void wd_message(void);
 static struct passwd *get_unix_pw(void);
-ATTRNORETURN static void opt_terminate(void) NORETURN;
+/* ATTRNORETURN static void opt_terminate(void) NORETURN; */
 
 #ifdef __EMSCRIPTEN__
 /* if WebAssembly, export this API and don't optimize it out */
@@ -769,6 +769,8 @@ sys_random_seed(void)
     return seed;
 }
 
+#if 0
+/* now found in earlyarg.c */
 /* for command-line options that perform some immediate action and then
    terminate the program without starting play, like 'nethack --version'
    or 'nethack -s Zelda'; do some cleanup before that termination */
@@ -780,7 +782,6 @@ opt_terminate(void)
     nh_terminate(EXIT_SUCCESS);
     /*NOTREACHED*/
 }
-
 /* show the sysconf file name, playground directory, run-time configuration
    file name, dumplog file name if applicable, and some other things */
 ATTRNORETURN void
@@ -794,6 +795,31 @@ after_opt_showpaths(const char *dir)
     opt_terminate();
     /*NOTREACHED*/
 }
+#endif
+
+void
+get_nhuuid(void)
+{
+    unsigned char stmp[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
+    if (svn.nhuuid[0])
+        return;
+
+    /* FIXME: fill in a useful valid UUID somehow */
+    Snprintf(svn.nhuuid, sizeof svn.nhuuid, "%s", (char *) stmp);
+}
+
+void
+free_nhuuid(void)
+{
+    int i;
+
+    for (i = 0; i < SIZE(svn.nhuuid); i++) {
+        svn.nhuuid[i] = 0;
+    }
+}
 
 #ifdef __EMSCRIPTEN__
 /***