diff -Naur pcre-8.44/pcretest.c pcre-8.44.serenity/pcretest.c
--- pcre-8.44/pcretest.c	2020-02-11 18:28:46.000000000 +0100
+++ pcre-8.44.serenity/pcretest.c	2021-04-12 01:23:25.182873375 +0200
@@ -3168,7 +3168,7 @@
       ((stack_size = get_value((pcre_uint8 *)argv[op+1], &endptr)),
         *endptr == 0))
     {
-#if defined(_WIN32) || defined(WIN32) || defined(__minix) || defined(NATIVE_ZOS) || defined(__VMS)
+#if defined(_WIN32) || defined(WIN32) || defined(__minix) || defined(NATIVE_ZOS) || defined(__VMS) || defined(__serenity__)
     printf("PCRE: -S not supported on this OS\n");
     exit(1);
 #else