diff -urN Avl_orig/bin/Makefile Avl/bin/Makefile
--- Avl_orig/bin/Makefile	2009-07-17 09:36:17.000000000 -0400
+++ Avl/bin/Makefile	2009-07-17 09:41:37.000000000 -0400
@@ -2,7 +2,7 @@
 # Makefile for AVL
 #
 
-BINDIR = .
+BINDIR = @PREFIX@/bin
 
 SRC = ../src
 
@@ -23,9 +23,9 @@
 
 ###================================================
 ###  Default compilers and flags
-FC = f77
+FC = gfortran
 FFLAGS = -O
-PLTLIB = -lX11
+PLTLIB = -L/usr/X11R6/lib -lX11
 FTNLIB =
 
 #Subroutine SECOND source file
@@ -64,14 +64,14 @@
 #FFLAGS = -O3
 ##--------------------------
 ### Intel Fortran Compiler 8.x
-FC = ifort
-FFLAGS = -O 
-PLTLIB = -L/usr/X11R6/lib -lX11
-SECOND = second_ifc.f
+#FC = ifort
+#FFLAGS = -O 
+#PLTLIB = -L/usr/X11R6/lib -lX11
+#SECOND = second_ifc.f
 #FTNLIB = -Vaxlib
 ##--------------------------
 ### double-precision option (also need double precision Eispack and libPlt)
-FFLAGS = -O -r8
+FFLAGS = -O3 -fdefault-real-8
 PLTOBJ = ../plotlib/libPltDP.a 
 
 
diff -urN Avl_orig/eispack/Makefile Avl/eispack/Makefile
--- Avl_orig/eispack/Makefile	2009-07-17 09:36:17.000000000 -0400
+++ Avl/eispack/Makefile	2009-07-17 09:42:31.000000000 -0400
@@ -1,7 +1,7 @@
 
 #FC = f77
-FC = ifort
-FLG = -O
+FC = gfortran
+FLG = -O3 -fdefault-real-8
 EISLIB = eispack.a
 AR = ar r
 RAN = ranlib
diff -urN Avl_orig/plotlib/Makefile Avl/plotlib/Makefile
--- Avl_orig/plotlib/Makefile	2009-07-17 09:36:17.000000000 -0400
+++ Avl/plotlib/Makefile	2009-07-17 09:45:25.000000000 -0400
@@ -32,11 +32,11 @@
 # Point to your install directory
 #INSTALLDIR= $(HOME)/lib
 #INSTALLDIR= /usr/local/lib
-#INSTALLDIR= .
+INSTALLDIR= @PREFIX@/lib
 
 # Use these to set default library name (overridden in config.make file) 
-PLTLIB = libPlt.a
-#PLTLIB = libPltDP.a
+#PLTLIB = libPlt.a
+PLTLIB = libPltDP.a
 
 
 ###========================================================
@@ -50,7 +50,7 @@
 ###
 ###--------------------------------------------------------
 ###  Uncomment to add the old plot compatibility routines
-OBJOLD  = plt_old.o
+#OBJOLD  = plt_old.o
 ###
 ###--------------------------------------------------------
 ###  Uncomment to add the primitive 3D-view routines
@@ -69,14 +69,14 @@
 
 ###================================================
 ###  Default compilers and flags, install commands
-FC = f77
-CC  = cc
+FC = gfortran
+CC  = gcc
 # Some fortrans need trailing underscores in C interface symbols (see Xwin.c)
 DEFINE = -DUNDERSCORE
 # Uncomment DP to make double-precision version
-#DP = -r8
-FFLAGS  = -O $(DP)
-CFLAGS  = -O $(DEFINE)
+DP = -fdefault-real-8
+FFLAGS  = -O3 $(DP)
+CFLAGS  = -O2 -I/usr/X11R6/include/ $(DEFINE)
 AR = ar r 
 RANLIB = ranlib
 LINKLIB =  -lX11 
diff -urN Avl_orig/plotlib/config.make.DP Avl/plotlib/config.make.DP
--- Avl_orig/plotlib/config.make.DP	2009-07-17 09:36:17.000000000 -0400
+++ Avl/plotlib/config.make.DP	2009-07-17 11:10:46.000000000 -0400
@@ -127,3 +127,16 @@
 #RANLIB = ar qs
 #LINKLIB =  -lX11
 
+###-------------------------------------------------------------------------
+###  Uncomment for OS X using Fink packaging system
+#
+FC = gfortran
+CC  = gcc
+# Uncomment DP to make double-precision version
+DP = -fdefault-real-8
+FFLAGS  = -O3 $(DP)
+CFLAGS  = -O2 -I/usr/X11R6/include/ $(DEFINE)
+AR = ar r
+RANLIB = ranlib 
+LINKLIB = -L/usr/X11R6/lib -lX11 
+