--- extern/CMakeLists.txt.orig	2018-07-23 04:41:52 UTC
+++ extern/CMakeLists.txt
@@ -1,4 +1,4 @@
 # src/extern/CMakeLists.txt
 
 add_subdirectory(gtest-1.7.0)
-add_subdirectory(cfitsio-3.41)
+#add_subdirectory(cfitsio-3.41)