diff -Naur libe-0.2.7/benchmarks/lockfree_hash_map.cc libe-0.2.7-new/benchmarks/lockfree_hash_map.cc
--- libe-0.2.7/benchmarks/lockfree_hash_map.cc  2011-10-12 04:02:24.000000000 +0200
+++ libe-0.2.7-new/benchmarks/lockfree_hash_map.cc      2012-08-20 14:59:39.135789923 +0200
@@ -30,6 +30,7 @@
 // C includes
 #include <cstdlib>
 #include <stdint.h>
+#include <unistd.h>
 
 // C++
 #include <iostream>
diff -Naur libe-0.2.7/benchmarks/lockfree_hash_set.cc libe-0.2.7-new/benchmarks/lockfree_hash_set.cc
--- libe-0.2.7/benchmarks/lockfree_hash_set.cc  2011-08-26 16:24:54.000000000 +0200
+++ libe-0.2.7-new/benchmarks/lockfree_hash_set.cc      2012-08-20 15:00:37.877793998 +0200
@@ -30,6 +30,7 @@
 // C includes
 #include <cstdlib>
 #include <stdint.h>
+#include <unistd.h>
 
 // C++
 #include <iostream>