Added check for `random()` function availability

configure.ac

@@ -285,6 +285,7 @@ AC_CHECK_FUNCS(strtoimax strtoll)
 AC_CHECK_FUNCS(mergesort)
 AC_CHECK_FUNCS(mkstemps)
 AC_CHECK_FUNCS(timegm)
+AC_CHECK_FUNCS(random)
 AC_CHECK_DECLS(strcasecmp)
 AC_CHECK_DECLS(vasprintf)
 AC_TRY_LINK_FUNC([symlink],[AC_DEFINE([HAVE_SYMLINK], 1, [Define to 1 if you have the symlink function.])])

skeletons/asn_random_fill.c

@@ -49,7 +49,11 @@ asn_random_between(intmax_t lb, intmax_t rb) {
 
         for(; got_entropy < range;) {
             got_entropy = (got_entropy << 24) | 0xffffff;
+#ifdef HAVE_RANDOM
             value = (value << 24) | (random() % 0xffffff);
+#else
+            value = (value << 24) | (rand() % 0xffffff);
+#endif
         }
 
         return lb + (intmax_t)(value % (range + 1));