xa65: Provide the target flag

This is meant for compatibility with ca65.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/crates/xa65/src/main.rs b/crates/xa65/src/main.rs
index a937d24..5c06f5e 100644
--- a/crates/xa65/src/main.rs
+++ b/crates/xa65/src/main.rs
@@ -17,6 +17,10 @@ struct Args {
     #[arg(short = 'c', long)]
     config: Option<String>,
 
+    /// Used for compatibility with 'ca65'.
+    #[arg(long)]
+    target: Option<String>,
+
     /// Place the output into the given <OUT> file.
     #[arg(short = 'o', long)]
     out: String,
@@ -70,6 +74,17 @@ fn main() {
     };
     let args = Args::parse();
 
+    // Sanity check on the target flag from 'ca65'.
+    if let Some(target) = args.target {
+        if target != "nes" {
+            die(format!(
+                "the target has to be 'nes', but '{}' was provided instead",
+                target
+            ));
+            return;
+        }
+    }
+
     // Generate a temporary directory in which both binary files will be placed
     // as an intermediate step.
     let random_string = &Alphanumeric.sample_string(&mut rand::thread_rng(), 16);