diff -Nurd ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h
--- ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h	2008-08-27 12:14:17.000000000 +0300
+++ ports/sysdeps/unix/sysv/linux/arm/nptl/lowlevellock.h	2008-08-27 12:17:16.000000000 +0300
@@ -25,6 +25,7 @@
 #include <atomic.h>
 #include <sysdep.h>
 #include <kernel-features.h>
+#include <tls.h>
 
 #define FUTEX_WAIT		0
 #define FUTEX_WAKE		1