From a473cfd71b3106343f6f367f5040fcf8c3551ca9 Mon Sep 17 00:00:00 2001
From: Timon Kruiper <timonkruiper@gmail.com>
Date: Tue, 20 Dec 2022 19:49:35 +0100
Subject: [PATCH] Kernel/aarch64: Add -mstrict-align flag to Kernel build

The ARM CPU is set up to trap on unaligned accesses, however the
compiler will still generate them if this flag is not set. We also need
the -Wno-cast-align as there are some files in AK that don't build
without the flag.
---
 Kernel/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 2f5400b3da..5b2f447e65 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -671,6 +671,10 @@ endif()
 
 if ("${SERENITY_ARCH}" STREQUAL "aarch64")
     add_compile_options(-fno-threadsafe-statics)
+
+    # Unaligned memory access will cause a trap, so to make sure the compiler doesn't generate
+    # those unaligned accesses, this flag is added.
+    add_compile_options(-mstrict-align -Wno-cast-align)
 endif()
 
 add_compile_definitions(KERNEL)