diff --git a/src/Makefile b/src/Makefile
index 3bedafe..315e2ae 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,21 +1,4 @@
-PYTHON=python2
-PYVERSION=$(shell $(PYTHON) -c "import sys; print(sys.version[:3])")
-HAS_CYTHON=$(shell bash -c "which cython &> /dev/null && echo 1 || echo 0")
-ifneq ($(HAS_CYTHON),0)
-
-../bin/irpf90: irpf90.so
-	rm ../bin/irpf90 ; cd ../bin ; ln -s ../src/irpf90_python.exe irpf90
-
-irpf90.so : $(wildcard *.py) irpf90.c
-	./cython_setup.py build_ext --inplace
-
-irpf90.c: irpf90.py
-	cython --embed irpf90.py
-
-else
 ../bin/irpf90: irpf90_python.exe
 	rm ../bin/irpf90 ; cd ../bin ; ln -s ../src/irpf90_python.exe irpf90
-endif
-
 clean:
 	rm -f *.c *.so *.pyc *.pyo 2>/dev/null
diff --git a/src/cython_setup.py b/src/cython_setup.py
deleted file mode 100755
index f784fd8..0000000
--- a/src/cython_setup.py
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env python2
-#   IRPF90 is a Fortran90 preprocessor written in Python for programming using
-#   the Implicit Reference to Parameters (IRP) method.
-#   Copyright (C) 2009 Anthony SCEMAMA 
-#
-#   This program is free software; you can redistribute it and/or modify
-#   it under the terms of the GNU General Public License as published by
-#   the Free Software Foundation; either version 2 of the License, or
-#   (at your option) any later version.
-#
-#   This program is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#   GNU General Public License for more details.
-#
-#   You should have received a copy of the GNU General Public License along
-#   with this program; if not, write to the Free Software Foundation, Inc.,
-#   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-#   Anthony Scemama
-#   LCPQ - IRSAMC - CNRS
-#   Universite Paul Sabatier
-#   118, route de Narbonne      
-#   31062 Toulouse Cedex 4      
-#   scemama@irsamc.ups-tlse.fr
-
-from distutils.core import setup
-from distutils.extension import Extension
-from Cython.Distutils import build_ext
-import os
-
-to_remove = """__init__.py cython_setup.py version.py command_line.py""".split()
-ext_modules = []
-
-files = os.listdir('.')
-for file in to_remove:
-  files.remove(file)
-
-for file in files:
-  if file.endswith(".py"):
-   module = file.split('.')[0]
-   ext_modules += [ Extension(module,[file]) ]
-
-setup(
-  name = 'IRPF90 extensions',
-  cmdclass = {'build_ext': build_ext},
-  ext_modules = ext_modules
-)
-
-
-
-