diff --git a/bin/irpf90 b/bin/irpf90
index 09358c1..e537e26 120000
--- a/bin/irpf90
+++ b/bin/irpf90
@@ -1 +1 @@
-/home/scemama/irpf90/src/irpf90.exe
\ No newline at end of file
+../src/irpf90.exe
\ No newline at end of file
diff --git a/example/irp_example1.irp.f b/example/irp_example1.irp.f
index 02f5493..9569645 100644
--- a/example/irp_example1.irp.f
+++ b/example/irp_example1.irp.f
@@ -1,10 +1,12 @@
 program irp_example1
-  integer :: x(W)
+! integer :: x(W)
   BEGIN_SHELL [ /bin/bash ]
     echo print *, \'Compiled by `whoami` on `date`\'
     echo print *, \'$FC $FCFLAGS\'
     echo print *, \'$IRPF90\'
   END_SHELL
-! print *, 't = ', t
-  print *,  u2
+  print *, 't = ', t
+
+  print *,  'v=', v
+! print *,  u2
 end
diff --git a/example/uvwt.irp.f b/example/uvwt.irp.f
index 63655a1..a2198a2 100644
--- a/example/uvwt.irp.f
+++ b/example/uvwt.irp.f
@@ -22,7 +22,7 @@ BEGIN_PROVIDER [ integer, u1 ]
   do i=1,m
     print *,  i
   enddo
-  PROVIDE u2
+! PROVIDE u2
 END_PROVIDER
 
 BEGIN_PROVIDER [ integer, u2 ]
diff --git a/src/Makefile b/src/Makefile
index a6bf542..74430d5 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,5 +1,10 @@
 PYTHON=python
 PYVERSION=$(shell $(PYTHON) -c "import sys; print(sys.version[:3])")
+HAS_CYTHON=$(shell which cython &> /dev/null && echo 1 || echo 0)
+ifneq ($(HAS_CYTHON),0)
+
+../bin/irpf90: irpf90.exe
+	rm ../bin/irpf90 ; cd ../bin ; ln -s ../src/irpf90.exe irpf90
 
 irpf90.exe: irpf90.so
 	gcc build/*/irpf90.o -L/usr/lib64 -lpython$(PYVERSION) -o irpf90.exe
@@ -10,5 +15,10 @@ irpf90.so : $(wildcard *.py) irpf90.c
 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 *.c *.so *.pyc 2>/dev/null
+	rm -f *.c *.so *.pyc *.pyo 2>/dev/null
diff --git a/src/irpf90_python.exe b/src/irpf90_python.exe
new file mode 100755
index 0000000..85de59e
--- /dev/null
+++ b/src/irpf90_python.exe
@@ -0,0 +1,40 @@
+#!/usr/bin/python
+#   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
+
+
+import os
+import sys
+
+wd = os.path.abspath(os.path.dirname(__file__))
+sys.path.insert(0,(wd+"/../src/"))
+sys.path.insert(0,(wd+"/../share/irpf90/src/"))
+
+def main():
+  import irpf90
+  irpf90.main()
+
+main()
+
diff --git a/src/version.py b/src/version.py
index f888239..a7c3fc0 100644
--- a/src/version.py
+++ b/src/version.py
@@ -1 +1 @@
-version = "1.2.12"
+version = "1.2.18"