From af443edca17649a6f2e66707746f482caefe3d1a Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Sun, 1 Mar 2026 17:54:07 +0000
Subject: Enable arch on windows

---
 build.bat | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

(limited to 'build.bat')

diff --git a/build.bat b/build.bat
index 91cc4db..b082e03 100644
--- a/build.bat
+++ b/build.bat
@@ -9,15 +9,25 @@ if [%1]==[/d] (
 
 SET CC=clang
 SET CXX=clang++
-SET ARCH=PORTABLE
 SET THREADS=16
 SET SANITIZE=
 
-:: TODO depends on ARCH variable
-SET ARCHOPTS=
-:: TODO depends on SANITIZE variable
-SET DFLAGS=-g3 -DDEBUG
+SET ARCH=PORTABLE
+clang -march=native -dM -E - < NUL | findstr /C:"__AVX2__" >NUL 2>&1
+if %ERRORLEVEL% EQU 0 (
+    SET ARCH=AVX2
+    SET ARCHOPTS=-mavx2
+    goto :ArchDone
+)
+clang -march=native -dM -E - < NUL | findstr /C:"__ARM_NEON" >NUL 2>&1
+if %ERRORLEVEL% EQU 0 (
+    SET ARCH=NEON
+    goto :ArchDone
+)
+:ArchDone
+
 
+SET DFLAGS=-g3 -DDEBUG
 SET WARNINGS=-Wno-deprecated-declarations
 SET VARIABLES=-DTHREADS=%THREADS% -D%ARCH%
 SET OFLAGS=-O3
-- 
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