From 02db8326778072c638b84293b30b55999f5ba585 Mon Sep 17 00:00:00 2001
From: "Simon 'Sze' L. Schlee" <schlee.simon@gmail.com>
Date: Sun, 24 Aug 2025 03:08:17 +0200
Subject: [PATCH] pass -freference-trace to executed compile command

Currently users executing `zig build` to run the exercises,
may encounter compiler output that tells them to use
`-freference-trace=[num]` to see more of the hidden
reference traces, so we should pass this parameter to
the zigling exercise being compiled, so that the learner
can provide this parameter like they would normally, when
using `zig build` directly in normal Zig programs.
---
 build.zig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build.zig b/build.zig
index e72dd4d..7e8bf7a 100644
--- a/build.zig
+++ b/build.zig
@@ -508,6 +508,10 @@ const ZiglingStep = struct {
             zig_args.append("-lc") catch @panic("OOM");
         }
 
+        if (b.reference_trace) |rt| {
+            zig_args.append(b.fmt("-freference-trace={}", .{rt})) catch @panic("OOM");
+        }
+
         zig_args.append(b.pathFromRoot(path)) catch @panic("OOM");
 
         zig_args.append("--cache-dir") catch @panic("OOM");