From d2cfa7b72b0064e0f4d24df8bf81a5a2ca900857 Mon Sep 17 00:00:00 2001
From: Julien Portalier <julien@portalier.com>
Date: Thu, 4 Apr 2024 10:27:38 +0200
Subject: [PATCH] AVR: declare CPU as compiler flag

This allows to know actual support for some features, for example which
pins are available.
---
 src/compiler/crystal/semantic/flags.cr | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/compiler/crystal/semantic/flags.cr b/src/compiler/crystal/semantic/flags.cr
index 0b53b779fb51..d455f1fdb0c7 100644
--- a/src/compiler/crystal/semantic/flags.cr
+++ b/src/compiler/crystal/semantic/flags.cr
@@ -56,6 +56,10 @@ class Crystal::Program
 
     flags.add "bsd" if target.bsd?
 
+    if target.avr? && (cpu = target_machine.cpu.presence)
+      flags.add cpu
+    end
+
     flags
   end
 end