--- Makefile.orig	2009-04-19 18:51:18.000000000 +0200
+++ Makefile	2016-11-25 23:36:59.627644580 +0100
@@ -26,14 +26,14 @@
 
 CXXDEBUG = -g
 CXXOPT = -O
-CXXFLAGS = -Wall -Werror -Wextra -pedantic $(CXXOPT)   $(CXXDEBUG)
+CXXFLAGS ?= -Wall -Werror -Wextra -pedantic $(CXXOPT)   $(CXXDEBUG)
 
 all:	$(PROGRAMS)
 
 # ======================================================================
 
 apetag: $(OBJECTS)
-	$(CXX) $(CXXDEBUG) -o apetag $(OBJECTS)
+	$(CXX) $(LDFLAGS) -o apetag $(OBJECTS)
 
 apetag.static: $(OBJECTS)
 	$(CXX) $(CXXDEBUG) -static -o apetag.static  $(OBJECTS)