link lib64 to lib so libantrl4-runtime lib can be found (#8700)

- get el8 and fedora to work

OMParser/Makefile

@@ -26,7 +26,6 @@ libOMParser.a: $(OBJS)
 	$(AR) -s -r $@ $(OBJS)
 	mkdir -p $(OMBUILDDIR)/lib/$(host_short)/omc/ $(OMBUILDDIR)/include/omc/
 	cp -pR $@ $(OMBUILDDIR)/lib/$(host_short)/omc/
-# 	cp -pR install/include/antlr4-runtime $(OMBUILDDIR)/include/omc/
 
 $(OBJS): $(CPP_FILES) install/lib/libantlr4-runtime.a
 
@@ -37,6 +36,7 @@ install/lib/libantlr4-runtime.a: 3rdParty/antlr4/runtime/Cpp/CMakeLists.txt
 	mkdir -p 3rdParty/antlr4/runtime/Cpp/build
 	$(MAKE) 3rdParty/antlr4/runtime/Cpp/build/Makefile
 	$(MAKE) -C 3rdParty/antlr4/runtime/Cpp/build/ install
+	if test -d "./install/lib64"; then ln -sf ./install/lib64 ./install/lib; fi
 
 $(CPP_FILES): runtool