diff -rupN Xfoil/bin/Makefile Xfoil-new/bin/Makefile
--- Xfoil/bin/Makefile	2013-11-19 06:23:37.000000000 +0100
+++ Xfoil-new/bin/Makefile	2015-09-05 19:55:01.769626114 +0200
@@ -4,10 +4,11 @@
 # M.Drela
 #*********************************************************
 
-
-SHELL = sh
-BINDIR = /home/codes/bin/
-#BINDIR = .
+FC = gfortran
+PLTOBJ = ../plotlib/libPltDP.a
+override CFLAGS += -DUNDERSCORE
+override FFLAGS += -fbounds-check -finit-real=inf -ffpe-trap=invalid,zero #-fdefault-real-8
+PLTLIB = -lX11
 
 PROGS = xfoil pplot pxplot
 
@@ -32,105 +33,12 @@ OSOBJ = frplot0.o
 # Use this for individual TS-wave frequency plotting
 OSOBJ = frplot.o ntcalc.o osmap.o getosfile.o
 
-##----------------------------------------------------
-PLTOBJ = ../plotlib/libPlt.a 
-
-# Use this if you have a copy of the plotlib as a system library
-#PLTOBJ = -lPlt 
-
-# The extra location arg here is for Linux which places X libs in /usr/X11R6
-PLTLIB = -L/usr/X11R6/lib -lX11
-
-###================================================
-###  Default compilers and flags
-###  FFLOPT used for xsolve.f
-FC = f77
-FFLAGS  = -O 
-FFLOPT  = -O
-INSTALLCMD = install -s
-
-CC = cc
-CFLAGS = -O -DUNDERSCORE
-
-##--------------------------
-
-# Uncomment flags for desired machine...
-
-##--------------------------
-### DEC Alpha with OSF and DEC f77/f90 compiler
-#FC = f77
-#FFLAGS = -fast -O4 -tune host
-#FFLOPT = -fast -O4 -tune host
-#FFLOPT = -fast -O5 -tune host -unroll 3
-# Debug flags
-#FFLAGS = -O0 -g
-#FFLOPT = -fast -O4 -tune host
-##--------------------------
-### SGI setup
-#FC = f77
-#FFLAGS = -O2 -static
-#FFLOPT = -O2 -static
-##--------------------------
-##  Uncomment for RS/6000
-#FFLAGS = -O -qextname
-#FFLOPT = -O -qextname
-##--------------------------
-##  Uncomment for HP-9000
-#FFLAGS = -O +ppu
-#FFLOPT = -O +ppu
-#FTNLIB = -U77
-##--------------------------
-### Absoft Linux f77
-#FC = f77
-#FFLAGS = -O -f -s -W -B108 -N34
-#FFLOPT = -O -f -s -W -B108 -N34
-##--------------------------
-### f2c/gcc compiler driver 
-#FC = fort77
-#FFLAGS = -O2 -fomit-frame-pointer
-#FFLOPT = -O2 -fomit-frame-pointer
-##--------------------------
-### GNU g77
-#FC = g77
-#FFLAGS = -O3 -fomit-frame-pointer
-#FFLOPT = -O3 -fomit-frame-pointer
-# Debug flags (symbols, array bounds)
-#FC = g77
-#FFLAGS = -g -O0 -C
-##--------------------------
-### GNU gfortran
-#FC = gfortran
-#FFLAGS = -O3 -fomit-frame-pointer
-#FFLOPT = -O3 -fomit-frame-pointer
-# Debug flags (symbols, array bounds)
-#FFLAGS = -g -O0 -fbounds-check
-#FFLOPT = -g -O0 -fbounds-check
-#
-### Double precision option
-#FFLAGS = -O3 -fdefault-real-8
-#FFLOPT = -O3 -fdefault-real-8
-#FFLAGS = -O3 -fdefault-real-8 -fbounds-check
-#FFLOPT = -O3 -fdefault-real-8 -fbounds-check
-# Debug flags (symbols, array bounds)
-#FFLAGS = -g -O0 -C
-##--------------------------
-### Gfortran
-FC = gfortran
-CHK = 
-CHK = -fbounds-check -finit-real=inf -ffpe-trap=invalid,zero
-DBL = -fdefault-real-8
-FFLAGS = -O $(CHK) $(DBL)
-FFLOPT = -O $(CHK) $(DBL)
-FTNLIB =
-
-PLTOBJ = ../plotlib/libPlt_gDP.a 
-
-
 
 all:	 $(PROGS)
 
-install: 
-	$(INSTALLCMD) $(PROGS) $(BINDIR)
+install:
+	install -Dd $(DESTDIR)$(BINDIR)
+	install -pm 0755 $(PROGS) $(DESTDIR)$(BINDIR)
 
 clean:
 	-/bin/rm $(PROGS)
@@ -141,19 +49,15 @@ clean:
 
 xfoil: $(XFOILOBJ) $(XUTILOBJ) $(OSOBJ)
 	$(FC) -o xfoil $(XFOILOBJ) $(XUTILOBJ) $(OSOBJ) $(PLTOBJ) $(PLTLIB) $(FTNLIB)
-	$(INSTALLCMD) xfoil $(BINDIR)
 
 pxplot:	$(PXPLOTOBJ) $(XUTILOBJ)
 	$(FC) -o pxplot $(PXPLOTOBJ) $(XUTILOBJ) $(PLTOBJ) $(PLTLIB) $(FTNLIB)
-	$(INSTALLCMD) pxplot $(BINDIR)
 
 pplot:	$(PPLOTOBJ) $(XUTILOBJ)
 	$(FC) -o pplot $(PPLOTOBJ) $(XUTILOBJ)  $(PLTOBJ) $(PLTLIB) $(FTNLIB)
-	$(INSTALLCMD) pplot $(BINDIR)
 
 blu: blu.o profil.o
 	$(FC) -o blu blu.o profil.o
-	$(INSTALLCMD) blu $(BINDIR)
 
 
 blu.o: $(SRC)/blu.f
diff -rupN Xfoil/orrs/bin/Makefile Xfoil-new/orrs/bin/Makefile
--- Xfoil/orrs/bin/Makefile	2011-04-03 18:27:46.000000000 +0200
+++ Xfoil-new/orrs/bin/Makefile	2015-09-05 19:48:08.318494742 +0200
@@ -1,26 +1,10 @@
 
 SRC = ../src
-PLTOBJ = /home/codes/Xplot/libPlt.a
 
-#========================================
-#  Default compiler flags
-FC = f77
-FLG = -O
+FC = gfortran
+override FFLAGS += -fbounds-check -finit-real=inf -ffpe-trap=invalid,zero #-fdefault-real-8
 PLTLIB = -lX11
-FTNLIB =
-
-#========================================
-#  Uncomment for Intel Fortran Compiler
-FC = ifort
-FLG = -O -fpe0 -CB
-PLTLIB = -L/usr/X11R6/lib -lX11
-FTNLIB = 
-
-#  Additional IFC stuff needed on MIT's Athena system
-#FC = ifc
-#FTNLIB = -Vaxlib /usr/lib/C-ctype.o /usr/lib/C_name.o /usr/lib/ctype-info.o
-
-#========================================
+PLTOBJ = libPltDP.a
 
 
 OS: osgen osmap.o
diff -rupN Xfoil/plotlib/Makefile Xfoil-new/plotlib/Makefile
--- Xfoil/plotlib/Makefile	2012-12-17 05:10:15.000000000 +0100
+++ Xfoil-new/plotlib/Makefile	2015-09-05 19:51:18.841147261 +0200
@@ -35,8 +35,16 @@
 INSTALLDIR = .
 
 # Use these to set default library name (overridden in config.make file) 
-PLTLIB = libPlt.a
-#PLTLIB = libPltDP.a
+#PLTLIB = libPlt.a
+PLTLIB = libPltDP.a
+
+FC = gfortran
+PLTLIB = libPltDP.a
+override FFLAGS += -fbounds-check -finit-real=inf -ffpe-trap=invalid,zero #-fdefault-real-8
+# Some fortrans need trailing underscores in C interface symbols (see Xwin.c)
+override CFLAGS += -DUNDERSCORE
+AR = ar -r
+RANLIB = ranlib
 
 
 ###========================================================
@@ -67,13 +75,10 @@ OBJ3D  = plt_3D.o
 
 
 ###-------------------------------------------------------------------------
-### Set compiler, compiler flags, name of output object library
-include ./config.make
-
-
-###-------------------------------------------------------------------------
 ### Basic make targets - build library, test programs
 
+all: $(PLTLIB)
+
 $(PLTLIB):  $(OBJ) $(OBJOLD) $(OBJ3D) $(OBJMISC)
 	$(AR)     $(PLTLIB) $(OBJ) $(OBJOLD) $(OBJ3D) $(OBJMISC)
 	$(RANLIB) $(PLTLIB)