diff --git a/pyprophet/main.py b/pyprophet/main.py
index cd8cbf0..36c2239 100644
--- a/pyprophet/main.py
+++ b/pyprophet/main.py
@@ -252,3 +252,7 @@ def __init__(self, prefix=prefix, dirname=dirname, **kw):
 
     print "%d seconds and %d msecs wall time" % (seconds, msecs)
     print
+
+if __name__ == "__main__":
+    main()
+
diff --git a/tools/README b/tools/README
new file mode 100644
index 0000000..2ff95d3
--- /dev/null
+++ b/tools/README
@@ -0,0 +1,5 @@
+
+Build as 
+
+$ python pyinstaller.py -F main.spec
+
diff --git a/tools/main.spec b/tools/main.spec
new file mode 100644
index 0000000..76bd461
--- /dev/null
+++ b/tools/main.spec
@@ -0,0 +1,42 @@
+# -*- mode: python -*-
+
+import pandas
+import numpy
+import sklearn.lda
+import sklearn.utils
+import sklearn.utils.sparsetools
+import sklearn.utils.sparsetools._graph_validation
+
+block_cipher = None
+
+import inspect
+# the build folder should be the first path on the stack
+dirname = os.path.dirname(os.path.abspath( inspect.stack()[0][1] ))
+pyprophet_exe = os.path.join(os.path.join(os.path.join(dirname, ".."), "pyprophet"), "main.py")
+
+a = Analysis([pyprophet_exe],
+             hiddenimports=[],
+             hookspath=None,
+             runtime_hooks=None,
+             cipher=block_cipher)
+
+a.datas.append(("sklearn/utils/sparsetools/_graph_validation.py", os.path.join(os.path.dirname(sklearn.__file__), 'utils/sparsetools/_graph_validation.py'),"BINARY"))
+a.datas.append(("sklearn/utils/sparsetools/_graph_tools.so", os.path.join(os.path.dirname(sklearn.__file__), 'utils/sparsetools/_graph_tools.so'),"BINARY"))
+
+pyz = PYZ(a.pure,
+             cipher=block_cipher)
+exe = EXE(pyz,
+          a.scripts,
+          a.binaries,
+          a.zipfiles,
+          a.datas,
+          name='pyprophet',
+          debug=False,
+          strip=None,
+          upx=True,
+          console=True )
+app = BUNDLE(exe,
+             name='pyprophet.app',
+             bundle_identifier='ch.ethz.imsb.pyprophet',
+             version='1.0',)
+