From fc0b1fb79f12c302aa7a3ffa7b2d18008f79b256 Mon Sep 17 00:00:00 2001
From: Bastian Bloessl <mail@bastibl.net>
Date: Fri, 17 Mar 2017 14:43:14 +0100
Subject: [PATCH] cmake: require swig

---
 CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ddc709c..4658338 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,6 +107,9 @@ find_package(Doxygen)
 find_package(PythonLibs 2)
 
 find_package(SWIG)
+if(NOT SWIG_FOUND)
+    message(FATAL_ERROR "SWIG required to compile gr-rds")
+endif()
 
 ########################################################################
 # On Apple only, set install name and use rpath correctly, if not already set