--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,7 @@ CXXFLAGS += `pkg-config --cflags sdl2 SD
 CXXFLAGS += -DPAKNAME=\"$(PAKNAME)\" -DPAKLOCATION=\"$(DATADIR)\" -DUNIX -DGAMEPLAYMANUAL=\"$(DOCDIR)index.html\" -Wall
 CXXFLAGS += -DLOCALEDIR=\"$(LOCALEDIR)\" -DMEDAL_SERVER_HOST=\"$(MEDAL_SERVER_HOST)\" -DMEDAL_SERVER_PORT=$(MEDAL_SERVER_PORT)
 CXXFLAGS += $(CPPFLAGS)
+CXXFLAGS += -flto
 LIBS = `pkg-config --libs sdl2 SDL2_mixer SDL2_image SDL2_ttf SDL2_net` -lz
 PAKLIBS = -lz
 
@@ -83,7 +84,7 @@ all: $(ALL)
 
 # linking the program.
 $(PROG): $(GAMEOBJS)
-	$(CXX) $(LDFLAGS) $(GAMEOBJS) -o $(PROG) $(LIBS)
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(GAMEOBJS) -o $(PROG) $(LIBS)
 	
 pak: $(PAKOBJS)
 	$(CXX) $(LDFLAGS) $(PAKOBJS) -o pak $(PAKLIBS)
