Index: include/CMakeLists.txt
===================================================================
--- include/CMakeLists.txt
+++ include/CMakeLists.txt
@@ -2,6 +2,7 @@
   __bit_reference
   __bsd_locale_defaults.h
   __bsd_locale_fallbacks.h
+  __errc
   __debug
   __functional_03
   __functional_base