Index: uspace/lib/c/include/smc.h
===================================================================
--- uspace/lib/c/include/smc.h	(revision fec7ba0dc652cc9b10575bcf70be9f369491905c)
+++ uspace/lib/c/include/smc.h	(revision 1c3c287faa0cdc5e3cedcbfc47dc2ffd4b4e73bd)
@@ -36,4 +36,5 @@
 #define LIBC_SMC_H_
 
+#include <errno.h>
 #include <stddef.h>