Add a dependency on lazy_static

Cargo.toml

@@ -15,3 +15,7 @@ bitflags = "0.7.0"
 x86_64 = "0.1.2"
 once = "0.3.3"
 linked_list_allocator = "0.4.2"
+
+[dependencies.lazy_static]
+version = "0.2.4"
+features = ["spin_no_std"]

src/lib.rs

@@ -23,6 +23,8 @@ extern crate x86_64;
 extern crate once;
 extern crate linked_list_allocator;
 #[macro_use]
+extern crate lazy_static;
+#[macro_use]
 mod vga_buffer;
 mod memory;
 mod interrupts;