1 files changed, 3 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 572f2ac..e30674f 100644
--- a/setup.py
+++ b/setup.py
@@ -665,7 +665,9 @@ class PyBuildExt(build_ext):
                 print("Custom linker flags may require --with-openssl-rpath=auto")
             print()
 
-        if os.environ.get("PYTHONSTRICTEXTENSIONBUILD") and (self.failed or self.failed_on_import):
+        if os.environ.get("PYTHONSTRICTEXTENSIONBUILD") and (
+            self.failed or self.failed_on_import or self.missing
+        ):
             raise RuntimeError("Failed to build some stdlib modules")
 
     def build_extension(self, ext):