--- configure.ac.orig	2021-06-27 09:08:51 UTC
+++ configure.ac
@@ -363,6 +363,9 @@ case "${host_os}" in
     linux*)
         build_linux=yes
         ;;
+    freebsd*)
+        build_linux=yes
+        ;;
     cygwin*|mingw*)
         build_windows=yes
         ;;