--- /dev/null
+From 3aefaf300478cd6fbc4892d5baaf70521ed323af Mon Sep 17 00:00:00 2001
+From: Yves Rutschle <git1@rutschle.net>
+Date: Thu, 9 Jul 2015 15:31:42 +0200
+Subject: [PATCH] Added Makefile option to build without libpcre
+
+---
+--- a/Makefile
++++ b/Makefile
+@@ -2,6 +2,7 @@
+
+ VERSION=$(shell ./genver.sh -r)
+ USELIBCONFIG=1 # Use libconfig? (necessary to use configuration files)
++USELIBPCRE=1 # Use libpcre? (necessary to use regex probe)
+ USELIBWRAP?= # Use libwrap?
+ USELIBCAP= # Use libcap?
+ COV_TEST= # Perform test coverage?
+@@ -27,6 +28,10 @@ ifneq ($(strip $(USELIBWRAP)),)
+ CPPFLAGS+=-DLIBWRAP
+ endif
+
++ifneq ($(strip $(USELIBPCRE)),)
++ CPPFLAGS+=-DLIBPCRE
++endif
++
+ ifneq ($(strip $(USELIBCONFIG)),)
+ LIBS:=$(LIBS) -lconfig
+ CPPFLAGS+=-DLIBCONFIG
+--- a/probe.c
++++ b/probe.c
+@@ -21,7 +21,9 @@
+
+ #define _GNU_SOURCE
+ #include <stdio.h>
++#ifdef LIBPCRE
+ #include <regex.h>
++#endif
+ #include <ctype.h>
+ #include "probe.h"
+
+@@ -226,6 +228,7 @@ static int is_tls_protocol(const char *p
+
+ static int regex_probe(const char *p, int len, struct proto *proto)
+ {
++#ifdef LIBPCRE
+ regex_t **probe = proto->data;
+ regmatch_t pos = { 0, len };
+
+@@ -233,6 +236,11 @@ static int regex_probe(const char *p, in
+ /* try them all */;
+
+ return (*probe != NULL);
++#else
++ /* Should never happen as we check when loading config file */
++ fprintf(stderr, "FATAL: regex probe called but not built in\n");
++ exit(5);
++#endif
+ }
+
+ /*
+--- a/sslh-main.c
++++ b/sslh-main.c
+@@ -25,7 +25,9 @@
+ #ifdef LIBCONFIG
+ #include <libconfig.h>
+ #endif
++#ifdef LIBPCRE
+ #include <regex.h>
++#endif
+
+ #include "common.h"
+ #include "probe.h"
+@@ -174,6 +176,7 @@ static int config_listen(config_t *confi
+ #ifdef LIBCONFIG
+ static void setup_regex_probe(struct proto *p, config_setting_t* probes)
+ {
++#ifdef LIBPCRE
+ int num_probes, errsize, i, res;
+ char *err;
+ const char * expr;
+@@ -201,6 +204,10 @@ static void setup_regex_probe(struct pro
+ exit(1);
+ }
+ }
++#else
++ fprintf(stderr, "line %d: regex probe specified but not compiled in\n", config_setting_source_line(probes));
++ exit(5);
++#endif
+ }
+ #endif
+