windows: Don't link rust_builtin

This library has no shims which are actually needed on Windows now, so translate
that last easy one into Rust and then don't link it at all on Windows.

2 files changed, 13 insertions, 6 deletions

diff --git a/src/libstd/rt/util.rs b/src/libstd/rt/util.rs
index 04f36d99c8e..031fda089c8 100644
--- a/src/libstd/rt/util.rs
+++ b/src/libstd/rt/util.rs
@@ -13,7 +13,6 @@ use io::prelude::*;
 use env;
 use fmt;
 use intrinsics;
-use libc::uintptr_t;
 use sync::atomic::{self, Ordering};
 use sys::stdio::Stderr;
 
@@ -22,10 +21,18 @@ use sys::stdio::Stderr;
 /// can't run correctly un-altered. Valgrind is there to help
 /// you notice weirdness in normal, un-doctored code paths!
 pub fn running_on_valgrind() -> bool {
-    extern {
-        fn rust_running_on_valgrind() -> uintptr_t;
+    return on_valgrind();
+    #[cfg(windows)]
+    fn on_valgrind() -> bool { false }
+
+    #[cfg(unix)]
+    fn on_valgrind() -> bool {
+        use libc::uintptr_t;
+        extern {
+            fn rust_running_on_valgrind() -> uintptr_t;
+        }
+        unsafe { rust_running_on_valgrind() != 0 }
     }
-    unsafe { rust_running_on_valgrind() != 0 }
 }
 
 /// Valgrind has a fixed-sized array (size around 2000) of segment descriptors
diff --git a/src/libstd/rtdeps.rs b/src/libstd/rtdeps.rs
index be674c83e22..b7839423e52 100644
--- a/src/libstd/rtdeps.rs
+++ b/src/libstd/rtdeps.rs
@@ -12,8 +12,8 @@
 //! the standard library This varies per-platform, but these libraries are
 //! necessary for running libstd.
 
-// All platforms need to link to rustrt
-#[cfg(not(test))]
+// A few small shims in C that haven't been translated to Rust yet
+#[cfg(all(not(test), not(windows)))]
 #[link(name = "rust_builtin", kind = "static")]
 extern {}