--- source/OMakefile.orig	2019-12-03 03:41:53 UTC
+++ source/OMakefile
@@ -208,6 +208,10 @@ if $(mem $(SYSNAME), OpenBSD)
     INC_C[] += $(INC)/search
     export
 
+if $(mem $(SYSNAME), FreeBSD)
+    INC_C[] += $(INC)/search
+    export
+
 
 ############################################################
 # Generated Files