From 6dbb70cd9b1aa3cbce47f984407a7a4360fb94e4 Mon Sep 17 00:00:00 2001
From: nihui <nihuini@tencent.com>
Date: Tue, 24 Dec 2024 15:58:28 +0800
Subject: [PATCH] Update CMakeLists.txt

---
 src/CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index cd5f9b6728d..c97235d97a0 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -348,6 +348,11 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC" OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang
         target_compile_options(ncnn PRIVATE /fp:fast)
     endif()
 
+    if(NCNN_TARGET_ARCH STREQUAL "arm")
+        # disable msvc svml optimization on arm target as it produces wrong result
+        target_compile_options(ncnn PRIVATE /d2Qvec-mathlib-)
+    endif()
+
     if(NCNN_SHARED_LIB)
         # msvc argues about stl string and vector uses in exported functions
         target_compile_options(ncnn PRIVATE /wd4251)