1 files changed, 19 insertions, 0 deletions
diff --git a/mumd/build.rs b/mumd/build.rs
new file mode 100644
index 0000000..0a4f506
--- /dev/null
+++ b/mumd/build.rs
@@ -0,0 +1,19 @@
+use std::process::Command;
+
+fn main() {
+    let version = match commit_hash().as_deref() {
+        None | Some("") => format!("v{}", env!("CARGO_PKG_VERSION")),
+        Some(version) => version.to_string(),
+    };
+
+    println!("cargo:rustc-env=VERSION={}", version);
+}
+
+fn commit_hash() -> Option<String> {
+    let output = Command::new("git")
+                         .arg("describe")
+                         .arg("--tags")
+                         .current_dir(env!("CARGO_MANIFEST_DIR"))
+                         .output();
+    output.ok().map(|o| String::from_utf8_lossy(&o.stdout).to_string())
+}