Build with --disable-unicode again. Fixes #1158607.
Will backport to 2.4.
diff --git a/Lib/codecs.py b/Lib/codecs.py
index b283925..b4103fb 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -720,11 +720,19 @@
 
 ### error handlers
 
-strict_errors = lookup_error("strict")
-ignore_errors = lookup_error("ignore")
-replace_errors = lookup_error("replace")
-xmlcharrefreplace_errors = lookup_error("xmlcharrefreplace")
-backslashreplace_errors = lookup_error("backslashreplace")
+try:
+    strict_errors = lookup_error("strict")
+    ignore_errors = lookup_error("ignore")
+    replace_errors = lookup_error("replace")
+    xmlcharrefreplace_errors = lookup_error("xmlcharrefreplace")
+    backslashreplace_errors = lookup_error("backslashreplace")
+except LookupError:
+    # In --disable-unicode builds, these error handler are missing
+    strict_errors = None
+    ignore_errors = None
+    replace_errors = None
+    xmlcharrefreplace_errors = None
+    backslashreplace_errors = None
 
 # Tell modulefinder that using codecs probably needs the encodings
 # package