From 1905ab5f7d9e224e8ff3d810fd6f4e27e9ce4370 Mon Sep 17 00:00:00 2001
From: Ed Kellett <e@kellett.im>
Date: Mon, 6 Aug 2018 12:57:52 +0100
Subject: [PATCH] Depend on hyperscan

---
 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/configure.ac b/configure.ac
index d62e5c42..d8c9e82d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -320,6 +320,18 @@ dnl End OpenSSL detection
 dnl Specialized functions and libraries
 dnl ===================================
 
+AC_ARG_ENABLE(hyperscan,
+AC_HELP_STRING([--disable-hyperscan],[Disable hyperscan support]),
+[hyperscan=$enableval],[hyperscan=yes])
+
+if test "$hyperscan" = yes; then
+
+CPPFLAGS="$CPPFLAGS $(pkg-config --cflags libhs)"
+LIBS="$LIBS $(pkg-config --libs libhs)"
+AC_CHECK_HEADER(hs_common.h)
+
+fi
+
 AC_ARG_WITH(zlib-path,
 AC_HELP_STRING([--with-zlib-path=DIR],[Path to libz.so for ziplinks support.]),
 [LIBS="$LIBS -L$withval"],)