1 files changed, 4 insertions, 0 deletions
diff --git a/build.zig b/build.zig
index e02b2d6..3053d13 100644
--- a/build.zig
+++ b/build.zig
@@ -104,6 +104,10 @@ pub fn build(b: *std.Build) void {
     const options = b.addOptions();
     options.addOption(u8, "led_pin", led_pin);
     options.addOption(u32, "stack_size", stack_size);
+    // On-board attribution: time `pardes_p4_input` and `pardes_p4_render` separately and print the
+    // cycle counts. Off by default because it puts a line on the wire per frame, which is the very
+    // resource being measured - it answers "where did the 34 ms go", not "how fast is it".
+    options.addOption(bool, "prof", b.option(bool, "prof", "print per-phase cycle counts (pardes)") orelse false);
     options.addOption([]const u8, "wifi_ssid", wifi_ssid);
     options.addOption([]const u8, "wifi_psk", if (psk_file) |path| blk: {
         const raw = std.Io.Dir.cwd().readFileAlloc(b.graph.io, path, b.allocator, .limited(256)) catch