diff --git a/BUILD.bazel b/BUILD.bazel
index a033be0e7..e8ce1c262 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -36,7 +36,7 @@ SUPPORTS_SVE_COPTS = [
 ]
 
 ENABLE_SVE_COPTS = [
-    "-march=armv9-a+i8mm+sve2",
+    "-march=armv8.5-a+i8mm+sve2",
 ]
 
 SVE_COPTS = select({
diff --git a/BUILD.gn b/BUILD.gn
index 9dc188345..e6913efdc 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -248,8 +248,8 @@ if (libyuv_use_sve) {
     # The -march arguments below are incompatible with libc++ modules.
     use_libcxx_modules = false
 
-    # SVE2 is an Armv9-A feature.
-    cflags = [ "-march=armv9-a+i8mm+sve2" ]
+    # SVE2 is an Armv9-A feature, but use Armv8.5-A for compatibility.
+    cflags = [ "-march=armv8.5-a+i8mm+sve2" ]
   }
 }
 
@@ -268,8 +268,9 @@ if (libyuv_use_sme) {
     # The -march arguments below are incompatible with libc++ modules.
     use_libcxx_modules = false
 
-    # SME is an Armv9-A feature.
-    cflags = [ "-march=armv9-a+i8mm+sme" ]
+    # SME is an Armv9-A feature, but use Armv8.5-A for compatibility with
+    # processors like Apple M4/M5 that support SME without SVE.
+    cflags = [ "-march=armv8.5-a+i8mm+sme" ]
   }
 }
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 17f6cbda9..1622b5c05 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,12 +114,12 @@ if(NOT MSVC)
     target_compile_options(${ly_lib_name}_sve PRIVATE -march=armv8.5-a+i8mm+sve2)
     list(APPEND ly_lib_parts $<TARGET_OBJECTS:${ly_lib_name}_sve>)
 
-    set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
-    set(OLD_CMAKE_TRY_COMPILE_TARGET_TYPE ${CMAKE_TRY_COMPILE_TARGET_TYPE})
-    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -march=armv9-a+i8mm+sme")
-    set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
     # Check whether the compiler can compile SME functions; this fails
     # with Clang for Windows.
+    set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
+    set(OLD_CMAKE_TRY_COMPILE_TARGET_TYPE ${CMAKE_TRY_COMPILE_TARGET_TYPE})
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -march=armv8.5-a+i8mm+sme")
+    set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
     check_c_source_compiles("
 __arm_locally_streaming void func(void) { }
 int main(void) { return 0; }
@@ -133,7 +133,7 @@ int main(void) { return 0; }
         ${ly_src_dir}/rotate_sme.cc
         ${ly_src_dir}/row_sme.cc
         ${ly_src_dir}/scale_sme.cc)
-      target_compile_options(${ly_lib_name}_sme PRIVATE -march=armv9-a+i8mm+sme)
+      target_compile_options(${ly_lib_name}_sme PRIVATE -march=armv8.5-a+i8mm+sme)
       list(APPEND ly_lib_parts $<TARGET_OBJECTS:${ly_lib_name}_sme>)
     else()
       add_definitions(-DLIBYUV_DISABLE_SME)