From 6a2e7056d989fe2cd5c6d3f55e510141812d10b0 Mon Sep 17 00:00:00 2001
From: Brendan Shanks <brendan.shanks@teradek.com>
Date: Wed, 9 May 2018 17:50:13 -0700
Subject: stun: Add support to detect OpenSSL

---
 README       |  2 +-
 configure.ac | 21 +++++++++++++++++----
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 3bececd..1ccfc7c 100644
--- a/README
+++ b/README
@@ -18,7 +18,7 @@ Requirements
 
  glib >= 2.44
  pkg-config
- gnutls >= 2.12.0
+ gnutls >= 2.12.0 or OpenSSL
  gupnp-igd >= 0.1.2 (optional)
  gstreamer-0.10 >= 0.10.0 (optional)
  gstreamer-1.0 (optional)
diff --git a/configure.ac b/configure.ac
index 36bd622..dcd0e5d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -185,15 +185,28 @@ AC_SUBST(LIBRT)
 
 # Dependencies
 
-GNUTLS_PACKAGES_PRIVATE="gnutls >= 2.12.0"
-PKG_CHECK_MODULES(GNUTLS, [$GNUTLS_PACKAGES_PRIVATE])
-
 NICE_PACKAGES_PUBLIC="glib-2.0 >= $GLIB_REQ gio-2.0 >= $GLIB_REQ gobject-2.0 >= $GLIB_REQ"
 NICE_PACKAGES_PRIVATE="gthread-2.0"
 
 PKG_CHECK_MODULES(GLIB, [$NICE_PACKAGES_PUBLIC $NICE_PACKAGES_PRIVATE])
 
-NICE_PACKAGES_PRIVATE="$NICE_PACKAGES_PRIVATE $GNUTLS_PACKAGES_PRIVATE"
+GNUTLS_PACKAGES_PRIVATE="gnutls >= 2.12.0"
+PKG_CHECK_MODULES(GNUTLS, [$GNUTLS_PACKAGES_PRIVATE],
+	[
+	AC_DEFINE([HAVE_GNUTLS], [1], [Use GnuTLS])
+	NICE_PACKAGES_PRIVATE="$NICE_PACKAGES_PRIVATE $GNUTLS_PACKAGES_PRIVATE"
+	],
+	[
+	AX_CHECK_OPENSSL(
+		[
+		AC_DEFINE([HAVE_OPENSSL], [1], [Use OpenSSL])
+		NICE_PACKAGES_PRIVATE="$NICE_PACKAGES_PRIVATE libcrypto"
+		],
+		[
+		AC_MSG_ERROR([Neither GnuTLS or OpenSSL is available])
+		]
+	)]
+)
 
 AC_SUBST([NICE_PACKAGES_PUBLIC])
 AC_SUBST([NICE_PACKAGES_PRIVATE])
-- 
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