diff --git a/Makefile b/Makefile
index a58462c..616f51a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
-CC = g++
-EXT=$(shell ./cpuflags.pl --opt )
-FLAGS = -Wall $(EXT)
-#FLAGS = -O3 -Wall -ffast-math
+CXX ?= g++
+#EXT=$(shell ./cpuCXXFLAGS.pl --opt )
+#CXXFLAGS = -Wall $(EXT)
+#CXXFLAGS = -O3 -Wall -ffast-math
 OBJS = utils-main.o utils-output.o utils-mrc.o
 
 all:	cav chan fsv sol tun vdw vol
@@ -17,54 +17,65 @@ volume:	vol
 objects:	utils-main.o utils-output.o utils-mrc.o
 
 cav:	objects cavities.cpp
-	$(CC) $(FLAGS) -o Cavities.exe $(OBJS) cavities.cpp
-	chmod 777 Cavities.exe
-	mv Cavities.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o cavities.o cavities.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o Cavities $(OBJS) cavities.o
+	chmod 755 Cavities
+	mv Cavities ../bin
 
 chan:	objects channel.cpp
-	$(CC) $(FLAGS) -o Channel.exe $(OBJS) channel.cpp
-	chmod 777 Channel.exe
-	mv Channel.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o channel.o channel.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o Channel $(OBJS) channel.o
+	chmod 755 Channel
+	mv Channel ../bin
 
 fsv:	objects fsv_calc.cpp
-	$(CC) $(FLAGS) -o FsvCalc.exe $(OBJS) fsv_calc.cpp
-	chmod 777 FsvCalc.exe
-	mv FsvCalc.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o fsv_calc.o fsv_calc.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o FsvCalc $(OBJS) fsv_calc.o
+	chmod 755 FsvCalc
+	mv FsvCalc ../bin
 
 sol:	objects solvent.cpp
-	$(CC) $(FLAGS) -o Solvent.exe $(OBJS) solvent.cpp
-	chmod 777 Solvent.exe
-	mv Solvent.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o solvent.o solvent.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o Solvent $(OBJS) solvent.o
+	chmod 755 Solvent
+	mv Solvent ../bin
 
 tun:	objects tunnel.cpp
-	$(CC) $(FLAGS) -o Tunnel.exe $(OBJS) tunnel.cpp
-	chmod 777 Tunnel.exe
-	mv Tunnel.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o tunnel.o tunnel.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o Tunnel $(OBJS) tunnel.o
+	chmod 755 Tunnel
+	mv Tunnel ../bin
 
 vdw:	objects vdw.cpp
-	$(CC) $(FLAGS) -o VDW.exe $(OBJS) vdw.cpp
-	chmod 777 VDW.exe
-	mv VDW.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o vdw.o vdw.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o VDW $(OBJS) vdw.o
+	chmod 755 VDW
+	mv VDW ../bin
 
 vol:	objects volume.cpp
-	$(CC) $(FLAGS) -o Volume.exe $(OBJS) volume.cpp
-	chmod 777 Volume.exe
-	mv Volume.exe ../bin
+	$(CXX) $(CXXFLAGS) -c -o volume.o volume.cpp
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o Volume $(OBJS) volume.o
+	chmod 755 Volume
+	mv Volume ../bin
 
 utils-main.o:	utils-main.cpp
-	$(CC) $(FLAGS) -c -o utils-main.o utils-main.cpp
+	$(CXX) $(CXXFLAGS) -c -o utils-main.o utils-main.cpp
 
 utils-output.o:	utils-main.o utils-output.cpp
-	$(CC) $(FLAGS) -c -o utils-output.o utils-output.cpp
+	$(CXX) $(CXXFLAGS) -c -o utils-output.o utils-output.cpp
 
 utils-mrc.o:	utils-mrc.cpp
-	$(CC) $(FLAGS) -c -o utils-mrc.o utils-mrc.cpp
+	$(CXX) $(CXXFLAGS) -c -o utils-mrc.o utils-mrc.cpp
+
+install:
+	install -d $(DESTDIR)/usr/bin
+	install ../bin/* $(DESTDIR)/usr/bin/
 
 clean:
 	rm -fv *.o  *~
 
 distclean:
-	rm -fv *.o ../bin/*.exe *~
+	rm -fv *.o ../bin/* *~
 
 none:	
 	echo "Please type make xxx, where xxx = cav, cha, fsv, sol, tun, vdw, or vol"