From 4dd6796cc55ec427a8b94a062609a70a40ec13f9 Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@yahoo.com>
Date: Thu, 6 Apr 2017 01:04:43 +0200
Subject: Add fallback SSL implementation using OpenSSL

---
 configure.ac | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index e346f6d..c0ca729 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,7 @@ AC_SUBST([THREAD_LIBS])
 have_ssl=0
 ssl_name="no SSL library found"
 ssl_mbedtls=0
+ssl_openssl=0
 SSL_CFLAGS=
 SSL_LIBS=
 
@@ -93,10 +94,25 @@ AS_IF([test x$mbedtls_check = xyes],
                ssl_name=mbedtls
                SSL_LIBS="-lmbedtls -lmbedx509 -lmbedcrypto"])])])])])
 
+# Check for openssl
+PKG_PROG_PKG_CONFIG
+AS_IF([test x$have_ssl != x1],
+  [AC_ARG_ENABLE([openssl],
+    [AC_HELP_STRING([--disable-openssl], [do not use openssl even if found])],
+    [openssl_check=$enableval], [openssl_check=yes])
+   AS_IF([test x$openssl_check = xyes],
+     [openssl_need="openssl >= 1.0.2"
+      PKG_CHECK_EXISTS([$openssl_need],
+        [PKG_CHECK_MODULES([SSL], [$openssl_need])
+         have_ssl=1
+         ssl_openssl=1
+         ssl_name=openssl])])])
+
 AC_SUBST([SSL_CFLAGS])
 AC_SUBST([SSL_LIBS])
 AM_CONDITIONAL([HAVE_SSL],[test "x$have_ssl" = "x1"])
 AM_CONDITIONAL([HAVE_MBEDTLS],[test "x$ssl_mbedtls" = "x1"])
+AM_CONDITIONAL([HAVE_OPENSSL],[test "x$ssl_openssl" = "x1"])
 
 # Finish up
 
-- 
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