diff --git a/Makefile b/Makefile
index 5ac6182..e574683 100644
--- a/Makefile
+++ b/Makefile
@@ -30,10 +30,12 @@ include make.config
 default: make.config
 	cd src && $(MAKE)
 
+
 clean:
 	- bash -c "[[ -f lib/libezfio.a ]] && rm $$PWD/lib/*"
 	- bash -c "[[ -f Python/ezfio.py ]] && rm $$PWD/Python/*"
 	- bash -c "[[ -f Ocaml/ezfio.ml ]] && rm $$PWD/Ocaml/*"
+	- bash -c "[[ -f Bash/ezfio.sh ]] && rm $$PWD/Bash/*"
 	- $(MAKE) -C $$PWD/src veryclean
 
 archive: distclean
@@ -44,7 +46,7 @@ archive: distclean
 	rm -rf EZFIO
 
 make.config: 
-	python configure.py
+	./configure.py
 
 veryclean:
 	$(MAKE) -C src veryclean
diff --git a/README.rst b/README.rst
index 459f1c8..32ff6e5 100644
--- a/README.rst
+++ b/README.rst
@@ -186,7 +186,7 @@ Create a file named ``create_input.py`` with:
 
 .. code-block:: python
 
-  #!/usr/bin/python
+  #!/usr/bin/python2
   
   import sys
   EZFIO = "./EZFIO"  # Put here the absolute path to the EZFIO directory
@@ -229,7 +229,7 @@ Execute the script:
 
 .. code-block:: bash
 
-  $ python create_input.py
+  $ python2 create_input.py
   18.0
 
 The printed mass is correct, and a new directory (``Water``) was created with our data:
diff --git a/bin/archive_ezfio.py b/bin/archive_ezfio.py
index 82a5140..5b8f1e3 100755
--- a/bin/archive_ezfio.py
+++ b/bin/archive_ezfio.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 import sys
 import os
diff --git a/bin/unarchive_ezfio.py b/bin/unarchive_ezfio.py
index 8a1f7ef..96b9077 100755
--- a/bin/unarchive_ezfio.py
+++ b/bin/unarchive_ezfio.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 import sys
 import os
diff --git a/build.ninja b/build.ninja
index bafb5d1..feeb8fa 100644
--- a/build.ninja
+++ b/build.ninja
@@ -1,7 +1,7 @@
 include version
 
 rule build_generated_ninja
-   command = python configure.py
+   command = python2 configure.py
    description = Creating generated.ninja
 
 rule run_ninja
diff --git a/configure.py b/configure.py
index 86e8773..d89c155 100755
--- a/configure.py
+++ b/configure.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 import os,sys
 
@@ -26,6 +26,7 @@ d_default = {
   "FCFLAGS" : '-O2',
   "RANLIB" : 'ranlib',
   "AR" : 'ar',
+  "BUILD_SYSTEM" : 'make',
   "NINJA" : 'ninja',
 }
 
@@ -116,11 +117,11 @@ rule build_libezfio_irp_a
    description = Building libezfio_irp.a
 
 rule build_python
-   command = cd src ; python create_python.py
+   command = cd src ; python2 create_python.py
    description = Building Python module
 
 rule build_ocaml
-   command = cd src ; python create_ocaml.py
+   command = cd src ; python2 create_ocaml.py
    description = Building Ocaml module
 
 build {irpf90_files}: compile_irpf90 | {irpf90_sources} {CONFIG_FILES}
diff --git a/src/Makefile b/src/Makefile
index 91f9ae6..40507f6 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -51,10 +51,11 @@ static: ../lib/libezfio.a ../lib/libezfio_irp.a
 	$(AR) dv ../lib/libezfio_irp.a irp_stack.irp.o
 	$(RANLIB) ../lib/libezfio_irp.a
 
-../Python/ezfio.py:
-	python create_python.py
 
-../Ocaml/ezfio.ml:
-	python create_ocaml.py
+../Python/ezfio.py: ../lib/libezfio.a
+	python2 create_python.py
+
+../Ocaml/ezfio.ml: ../lib/libezfio.a
+	python2 create_ocaml.py
 
 
diff --git a/src/create_ocaml.py b/src/create_ocaml.py
index db2cc06..0445d1a 100755
--- a/src/create_ocaml.py
+++ b/src/create_ocaml.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/create_python.py b/src/create_python.py
index 1b5e0b4..5954d8d 100755
--- a/src/create_python.py
+++ b/src/create_python.py
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/ezfio-head.py b/src/ezfio-head.py
index d38091d..71e85c1 100644
--- a/src/ezfio-head.py
+++ b/src/ezfio-head.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/groups.py b/src/groups.py
index 83dd175..89a326d 100644
--- a/src/groups.py
+++ b/src/groups.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/groups_templates.py b/src/groups_templates.py
index 4e14c24..ea4b049 100644
--- a/src/groups_templates.py
+++ b/src/groups_templates.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/libezfio_file.irp.f b/src/libezfio_file.irp.f
index 860eb8e..41f0bed 100644
--- a/src/libezfio_file.irp.f
+++ b/src/libezfio_file.irp.f
@@ -159,7 +159,7 @@ subroutine ezfio_set_file(filename_in)
     call ezfio_mkdir(trim(libezfio_filename)//'/ezfio')
     call system('LANG= date > '//trim(libezfio_filename)//'/ezfio/creation')
     call system('echo $USER > '//trim(libezfio_filename)//'/ezfio/user')
-    BEGIN_SHELL [ /usr/bin/python ]
+    BEGIN_SHELL [ /usr/bin/env python2 ]
 import os
 command = "'echo %s > '//trim(libezfio_filename)//'/ezfio/library'"
 cwd = os.getcwd()
@@ -178,7 +178,7 @@ subroutine ezfio_finish()
 ! Close all open buffers
  END_DOC
  close(libezfio_iunit)
- BEGIN_SHELL [ /usr/bin/python ]
+ BEGIN_SHELL [ /usr/bin/env python2 ]
 import os
 from zlib import crc32
 print '  call irp_finalize_%s'%(str(abs(crc32(os.getcwd()))))
diff --git a/src/libezfio_groups.irp.f b/src/libezfio_groups.irp.f
index 8b1d991..9bcc9ab 100644
--- a/src/libezfio_groups.irp.f
+++ b/src/libezfio_groups.irp.f
@@ -22,7 +22,7 @@
 !   31062 Toulouse Cedex 4      
 !   scemama@irsamc.ups-tlse.fr
 
-BEGIN_SHELL [ /usr/bin/python ]
+BEGIN_SHELL [ /usr/bin/env python2 ]
 import groups
 END_SHELL
 
diff --git a/src/libezfio_util.irp.f b/src/libezfio_util.irp.f
index 3a3a573..ae354f2 100644
--- a/src/libezfio_util.irp.f
+++ b/src/libezfio_util.irp.f
@@ -111,7 +111,7 @@ subroutine libezfio_closez(filename,mode)
 end
 
 
-BEGIN_SHELL [ /usr/bin/python ]
+BEGIN_SHELL [ /usr/bin/env python2 ]
 from f_types import format, t_short
 
 
diff --git a/src/read_config.py b/src/read_config.py
index 743377a..3508c9c 100644
--- a/src/read_config.py
+++ b/src/read_config.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/src/test.py b/src/test.py
index e6540d1..d781fb7 100755
--- a/src/test.py
+++ b/src/test.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python2
 #   EZFIO is an automatic generator of I/O libraries
 #   Copyright (C) 2009 Anthony SCEMAMA, CNRS
 #
diff --git a/version b/version
index f406e04..0c794cf 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-VERSION=1.3.1
+VERSION=1.3.2