$NetBSD$

Honor LDFLAGS when building ocamlyacc.

--- yacc/Makefile.orig	2020-01-10 16:10:46.000000000 +0000
+++ yacc/Makefile
@@ -39,7 +39,7 @@ generated_files := ocamlyacc$(EXE) $(oca
 all: ocamlyacc$(EXE)
 
 ocamlyacc$(EXE): $(ocamlyacc_OBJECTS)
-	$(MKEXE) -o $@ $^ $(EXTRALIBS)
+	$(MKEXE) $(BYTECCLIBS) $(LDFLAGS) -o $@ $^ $(EXTRALIBS)
 
 version.h : $(ROOTDIR)/VERSION
 	echo "#define OCAML_VERSION \"`sed -e 1q $< | tr -d '\r'`\"" > $@
