From 42743db558fb6e5bc849e2e9604893328fe20ef3 Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Sun, 27 Nov 2022 22:42:04 +0100
Subject: [PATCH] build.zig: require at least SSE4.1 when targeting x86_64

---
 build.zig | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/build.zig b/build.zig
index 8f797398..639121ee 100644
--- a/build.zig
+++ b/build.zig
@@ -5,6 +5,7 @@ const fs = std.fs;
 const heap = std.heap;
 const mem = std.mem;
 const LibExeObjStep = std.build.LibExeObjStep;
+const Target = std.Target;
 
 pub fn build(b: *std.build.Builder) !void {
     const src_path = "src/libsodium";
@@ -132,12 +133,13 @@ pub fn build(b: *std.build.Builder) !void {
                 lib.defineCMacro("HAVE_EMMINTRIN_H", "1");
                 lib.defineCMacro("HAVE_PMMINTRIN_H", "1");
                 lib.defineCMacro("HAVE_SMMINTRIN_H", "1");
+                lib.defineCMacro("HAVE_TMMINTRIN_H", "1");
                 lib.defineCMacro("HAVE_WMMINTRIN_H", "1");
             },
             .aarch64, .aarch64_be => {
                 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));
+                const has_neon = cpu_features.isEnabled(@enumToInt(Target.aarch64.Feature.neon));
+                const has_crypto = cpu_features.isEnabled(@enumToInt(Target.aarch64.Feature.crypto));
                 if (has_neon and has_crypto) {
                     lib.defineCMacro("HAVE_ARMCRYPTO", "1");
                 }
@@ -155,6 +157,15 @@ pub fn build(b: *std.build.Builder) !void {
             else => {},
         }
 
+        switch (target.getCpuArch()) {
+            .x86_64 => {
+                lib.target.cpu_features_add.addFeature(@enumToInt(Target.x86.Feature.sse4_1));
+                lib.target.cpu_features_add.addFeature(@enumToInt(Target.x86.Feature.aes));
+                lib.target.cpu_features_add.addFeature(@enumToInt(Target.x86.Feature.pclmul));
+            },
+            else => {},
+        }
+
         var allocator = heap.page_allocator;
         var walker = try src_dir.walk(allocator);
         while (try walker.next()) |entry| {