ocaml: Fix ocamlmklib wrapper script for ld options.

Tested by wiz for relro.

lang/ocaml/files/wrapper.sh

@@ -1,6 +1,6 @@
 #!@SH@
 #
-# $NetBSD: wrapper.sh,v 1.4 2021/01/10 11:13:33 jperkin Exp $
+# $NetBSD: wrapper.sh,v 1.5 2021/01/12 11:19:17 jperkin Exp $
 
 CFLAGS='@CFLAGS@'
 LDFLAGS='@LDFLAGS@'
@@ -10,13 +10,20 @@ for flag in ${CFLAGS}; do
 	cflags="${cflags} -ccopt ${flag}"
 done
 for flag in ${LDFLAGS}; do
-	ldflags="${ldflags} -ccopt ${flag}"
+	cldflags="${cldflags} -ccopt ${flag}"
+	ldflags="${ldflags} -ldopt ${flag}"
 done
 
-if echo "$@" | grep ' -c ' >/dev/null; then
-	MLFLAGS="${cflags}"
-else
+case "${WRAPPEE} $@" in
+ocamlmklib*)
 	MLFLAGS="${cflags} ${ldflags}"
-fi
+	;;
+*" -c "*)
+	MLFLAGS="${cflags}"
+	;;
+*)
+	MLFLAGS="${cflags} ${cldflags}"
+	;;
+esac
 
 exec "@OCAML_PREFIX@/bin/${WRAPPEE}" ${MLFLAGS} "$@"