diff --git a/src/ailego/CMakeLists.txt b/src/ailego/CMakeLists.txt
index c9867c3..bdabe41 100644
--- a/src/ailego/CMakeLists.txt
+++ b/src/ailego/CMakeLists.txt
@@ -18,7 +18,7 @@ if(UNIX AND NOT APPLE)
     list(APPEND EXTRA_LIBS ${LIB_RT})
 endif()
 
-if(NOT ANDROID)
+if(NOT ANDROID AND AUTO_DETECT_ARCH)
     if(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|i686|i386|x64")
         setup_compiler_march_for_x86(MATH_MARCH_FLAG_SSE MATH_MARCH_FLAG_AVX2 MATH_MARCH_FLAG_AVX512)
         message(STATUS "best compiler march, sse: " ${MATH_MARCH_FLAG_SSE} ", avx2: " ${MATH_MARCH_FLAG_AVX2} ", avx512: " ${MATH_MARCH_FLAG_AVX512})