xtask: Fix bugs

- Fix manpage name
- Clean manpage dir to remove old artifacts

Signed-off-by: Ayush Singh <ayush@beagleboard.org>

cli/Makefile

@@ -42,9 +42,10 @@ package-cli-windows-zip-%: build-cli-% shell-completion-powershell
 
 manpage:
 	$(info "Generate CLI Manpages")
+	rm -rf target/man
 	mkdir -p target/man
 	cargo xtask cli-man target/man
-	gzip target/man/* -f
+	gzip target/man/*
 
 shell-completion-%:
 	$(info "Generate CLI Shell Completion")

xtask/src/main.rs

@@ -34,7 +34,13 @@ fn main() {
 
     match opts.command {
         Commands::CliMan { out_dir } => {
-            let cmd = bb_imager_cli::Opt::command();
+            let cli_manifest_path = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+                .parent()
+                .unwrap()
+                .join("cli/Cargo.toml");
+            let manifest = cargo_toml::Manifest::from_path(cli_manifest_path).unwrap();
+            let cmd = bb_imager_cli::Opt::command().display_name(manifest.package().name());
+
             clap_mangen::generate_to(cmd, out_dir).unwrap();
         }
         Commands::CliShellComplete { shell, out_dir } => {