further search for generated headers

setup.py

@@ -4,7 +4,7 @@ from setuptools import setup, Extension
 
 setup(
     name='setuptools_dso',
-    version="0.1a3",
+    version="0.1a4",
     description="setuptools extension to build non-python shared libraries",
     long_description="""setuptools extension for building non-python shared libraries
 and packaging them for distribution.  eg. for use by python extensions.

src/setuptools_dso/dsocmd.py

@@ -253,6 +253,7 @@ class build_dso(dso2libmixin, Command):
         extra_args = dso.extra_compile_args or []
 
         include_dirs = massage_dir_list(self.build_temp, dso.include_dirs or [])
+        include_dirs = massage_dir_list(self.build_lib, include_dirs)
 
         SRC = defaultdict(list)