Change Enable KleidiAI to default in CMake (#12452)

mcr229 · pytorchbot · commit e37359d5daf0 · 2025-07-15T20:07:45.000Z
(cherry picked from commit 54813d9)
diff --git a/backends/xnnpack/cmake/Dependencies.cmake b/backends/xnnpack/cmake/Dependencies.cmake
@@ -68,10 +68,12 @@ install(TARGETS xnnpack-microkernels-prod
 
 
 if(EXECUTORCH_XNNPACK_ENABLE_KLEIDI)
-    install(TARGETS kleidiai
-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+    if(TARGET kleidiai)
+        install(TARGETS kleidiai
+            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+    endif()
 endif()
 
 # Revert PIC Flag to what it originally was
diff --git a/tools/cmake/preset/default.cmake b/tools/cmake/preset/default.cmake
@@ -258,7 +258,7 @@ define_overridable_option(
 define_overridable_option(
   EXECUTORCH_XNNPACK_ENABLE_KLEIDI
   "Enable Arm Kleidi kernels"
-  BOOL OFF
+  BOOL ON
 )
 # Turning this on cache weights between partitions and methods. If weights
 # are shared across methods/partitions then this can reduce load time and

Original file line number	Diff line number	Diff line change
`@@ -258,7 +258,7 @@ define_overridable_option(`
`258`	`258`	`define_overridable_option(`
`259`	`259`	`EXECUTORCH_XNNPACK_ENABLE_KLEIDI`
`260`	`260`	`"Enable Arm Kleidi kernels"`
`261`		`- BOOL OFF`
	`261`	`+ BOOL ON`
`262`	`262`	`)`
`263`	`263`	`# Turning this on cache weights between partitions and methods. If weights`
`264`	`264`	`# are shared across methods/partitions then this can reduce load time and`