CMake: skip sam tools if SWIG is not found

Clement Champetier · Clement Champetier · commit 1f03b333db88 · 2017-02-17T14:46:05.000+01:00
diff --git a/applications/sam/CMakeLists.txt b/applications/sam/CMakeLists.txt
@@ -1,4 +1,8 @@
 ## sam
+find_package(SWIG)
+if(NOT SWIG_FOUND)
+    return()
+endif()
 
 set(TUTTLE_INSTALL_SAM_PYTHON "bin/python/sam")
 
