2 files changed, 20 insertions, 0 deletions
diff --git a/mumctl/build.rs b/mumctl/build.rs
new file mode 100644
index 0000000..0a4f506
--- /dev/null
+++ b/mumctl/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())
+}
diff --git a/mumctl/src/main.rs b/mumctl/src/main.rs
index d43ff4f..d07a482 100644
--- a/mumctl/src/main.rs
+++ b/mumctl/src/main.rs
@@ -53,6 +53,7 @@ fn main() {
 
     let mut app = App::new("mumctl")
         .setting(AppSettings::ArgRequiredElseHelp)
+        .version(env!("VERSION"))
         .subcommand(
             SubCommand::with_name("connect")
                 .about("Connect to a server")