Bug: https://bugs.gentoo.org/894352
--- a/onak.c
+++ b/onak.c
@@ -337,7 +337,11 @@ int main(int argc, char *argv[])
 			}
 			isfp = true;
 		} else if (search != NULL) {
+#if defined(__GLIBC__)
 			keyid = strtouq(search, &end, 16);
+#else
+			keyid = strtoull(search, &end, 16);
+#endif
 			if (*search != 0 &&
 					end != NULL &&
 					*end == 0) {