freebsd-ports/math/freefem++/files/patch-plugin_seq_load.link.in

--- plugin/seq/load.link.in.orig	2020-04-02 12:11:06 UTC
+++ plugin/seq/load.link.in
@@ -245,7 +245,7 @@ case "$WIN32$uu" in
 	;;
     FreeBSD|NetBSD)
 	SHARED="-shared"
-	FLAGS='-fPIC';;
+	FLAGS="-fPIC $LDFLAGS";;
 	# 64 bit Linux needs -fPIC (ALH)
     SunOS)
         SHARED="-shared"