--- configure.ac.orig	2021-11-03 13:00:16 UTC
+++ configure.ac
@@ -221,6 +221,7 @@ fi
 AM_CONDITIONAL(IS_WINDOWS, [test "$OS_TYPE" = "windows"])
 AM_CONDITIONAL(IS_OSX, [test "$OSYSTEM" = "osx"])
 AM_CONDITIONAL(IS_LINUX, [test "$OSYSTEM" = "linux"])
+AM_CONDITIONAL(IS_FREEBSD, [test "$OSYSTEM" = "freebsd"])
 
 AC_SUBST(cyberjack_sys_is_windows)
 AC_SUBST(cyberjack_config_file)
