1 files changed, 8 insertions, 2 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 0c06be5..79a60c3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,17 +5,22 @@
 #![crate_name = "x86"]
 #![crate_type = "lib"]
 
+#[cfg(test)]
+#[macro_use]
+extern crate std;
+
 #[macro_use]
 extern crate bitflags;
 
 #[macro_use]
 extern crate raw_cpuid;
 
-#[cfg(test)]
-extern crate std;
+#[macro_use]
+extern crate phf;
 
 #[cfg(not(test))]
 mod std {
+    pub use core::fmt;
     pub use core::ops;
     pub use core::option;
 }
@@ -31,6 +36,7 @@ pub mod segmentation;
 pub mod task;
 pub mod dtables;
 pub mod syscall;
+pub mod perfcnt;
 pub mod cpuid {
     pub use raw_cpuid::*;
 }
\ No newline at end of file