--- CMakeLists.txt.orig	2018-07-23 04:35:44 UTC
+++ CMakeLists.txt
@@ -54,6 +54,7 @@ include_directories(
     ${PROJECT_SOURCE_DIR}/extern/cfitsio-3.41
     ${PROJECT_SOURCE_DIR}/extern/Random123
     ${PROJECT_SOURCE_DIR}/extern/Random123/features
+    ${FREEBSD_FILESDIR}
 )
 set(GTEST_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/extern/gtest-1.7.0/include/gtest)
 
