1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/rust/target-lexicon/src/host.rs b/third_party/rust/target-lexicon/src/host.rs
new file mode 100644
index 0000000000..4c6ad5ba54
--- /dev/null
+++ b/third_party/rust/target-lexicon/src/host.rs
@@ -0,0 +1,56 @@
+use crate::{Architecture, BinaryFormat, Environment, OperatingSystem, Triple, Vendor};
+
+// Include the implementations of the `HOST` object containing information
+// about the current host.
+include!(concat!(env!("OUT_DIR"), "/host.rs"));
+
+#[cfg(test)]
+mod tests {
+    #[cfg(target_os = "linux")]
+    #[test]
+    fn test_linux() {
+        use super::*;
+        assert_eq!(OperatingSystem::host(), OperatingSystem::Linux);
+    }
+
+    #[cfg(target_os = "macos")]
+    #[test]
+    fn test_macos() {
+        use super::*;
+        assert_eq!(OperatingSystem::host(), OperatingSystem::Darwin);
+    }
+
+    #[cfg(windows)]
+    #[test]
+    fn test_windows() {
+        use super::*;
+        assert_eq!(OperatingSystem::host(), OperatingSystem::Windows);
+    }
+
+    #[cfg(target_pointer_width = "16")]
+    #[test]
+    fn test_ptr16() {
+        use super::*;
+        assert_eq!(Architecture::host().pointer_width().unwrap().bits(), 16);
+    }
+
+    #[cfg(target_pointer_width = "32")]
+    #[test]
+    fn test_ptr32() {
+        use super::*;
+        assert_eq!(Architecture::host().pointer_width().unwrap().bits(), 32);
+    }
+
+    #[cfg(target_pointer_width = "64")]
+    #[test]
+    fn test_ptr64() {
+        use super::*;
+        assert_eq!(Architecture::host().pointer_width().unwrap().bits(), 64);
+    }
+
+    #[test]
+    fn host_object() {
+        use super::*;
+        assert_eq!(HOST, Triple::host());
+    }
+}