Index: uspace/lib/c/include/bitops.h
===================================================================
--- uspace/lib/c/include/bitops.h	(revision 972c60ce6ab8b890f6d151170b7c14d742eaa9eb)
+++ uspace/lib/c/include/bitops.h	(revision 7c10198d390820dc1fcb46744f0585f3bf1fb8b6)
@@ -107,4 +107,6 @@
 }
 
+extern int __popcountsi2(int);
+
 #endif