From 35e1fdf5dad8e14d1df44d7d206dbf0d1d94d07b Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Sun, 13 Nov 2022 20:50:27 +0100
Subject: [PATCH] Zig build: enable ARM Crypto

---
 build.zig | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/build.zig b/build.zig
index 20a31d37..faa019d8 100644
--- a/build.zig
+++ b/build.zig
@@ -54,7 +54,12 @@ pub fn build(b: *std.build.Builder) !void {
                 lib.defineCMacro("HAVE_PMMINTRIN_H", "1");
             },
             .aarch64, .aarch64_be => {
-                lib.defineCMacro("HAVE_ARMCRYTO", "1");
+                const cpu_features = target.getCpuFeatures();
+                const has_neon = cpu_features.isEnabled(@enumToInt(std.Target.aarch64.Feature.neon));
+                const has_crypto = cpu_features.isEnabled(@enumToInt(std.Target.aarch64.Feature.crypto));
+                if (has_neon and has_crypto) {
+                    lib.defineCMacro("HAVE_ARMCRYPTO", "1");
+                }
             },
             .wasm32, .wasm64 => {
                 lib.defineCMacro("__wasm__", "1");