Try to ignore externally installed lxml packages when building, to prevent accidentally picking up their cimport/include files.

1 files changed, 4 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 7fe3aeec..8c0ded82 100644
--- a/setup.py
+++ b/setup.py
@@ -2,6 +2,7 @@ import os
 import re
 import sys
 import fnmatch
+import os.path
 
 # for command line options and supported environment variables, please
 # see the end of 'setupinfo.py'
@@ -15,6 +16,9 @@ try:
 except ImportError:
     from distutils.core import setup
 
+# make sure Cython finds include files in the project directory and not outside
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))
+
 import versioninfo
 import setupinfo