diff --git a/setup.py b/setup.py
index 46b1196..81c2873 100644
--- a/setup.py
+++ b/setup.py
@@ -107,6 +107,7 @@ def run(self):
 class build_ext(_build_ext):
     def run(self):
         if self.distribution.has_c_libraries():
+            self.run_command("build_clib")
             build_clib = self.get_finalized_command("build_clib")
             self.include_dirs.append(
                 os.path.join(build_clib.build_clib, "include"),
@@ -182,4 +183,3 @@ def run(self):
       zip_safe=False)
 
 
-