From ee77b60e2a3662c365ae49b745e6a07315688558 Mon Sep 17 00:00:00 2001
From: gioelece <51095762+gioelece@users.noreply.github.com>
Date: Mon, 3 Mar 2025 10:12:12 +0100
Subject: [PATCH] Set gcc architecture to armv8.2-a when building for aarch64
 (#81)

armv8-a does not actually support sha3, see https://gcc.gnu.org/onlinedocs/gcc/AArch64-Options.html
---
 pqcrypto-internals/build.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pqcrypto-internals/build.rs b/pqcrypto-internals/build.rs
index 112d096..97bdcb6 100644
--- a/pqcrypto-internals/build.rs
+++ b/pqcrypto-internals/build.rs
@@ -62,7 +62,7 @@ fn main() {
         println!("cargo:rustc-link-lib=keccak4x")
     } else if target_arch == "aarch64" && target_env != "msvc" {
         builder
-            .flag("-march=armv8-a+sha3")
+            .flag("-march=armv8.2-a+sha3")
             .file(cfiledir.join("keccak2x").join("fips202x2.c"))
             .file(cfiledir.join("keccak2x").join("feat.S"))
             .compile("keccak2x");