Index: boot/CMakeLists.txt
===================================================================
--- boot/CMakeLists.txt	(revision 69140)
+++ boot/CMakeLists.txt	(working copy)
@@ -15,10 +15,15 @@
     message(FATAL_ERROR "Unknown ARCH, can't generate a valid UEFI boot filename.")
 endif()
 
-add_custom_target(efisys
-    COMMAND native-fatten ${CMAKE_CURRENT_BINARY_DIR}/efisys.bin -format 2880 EFIBOOT -boot ${CMAKE_CURRENT_BINARY_DIR}/freeldr/bootsect/fat.bin -mkdir EFI -mkdir EFI/BOOT -add $<TARGET_FILE:bootmgfw> EFI/BOOT/boot${EFI_PLATFORM_ID}.efi
-    DEPENDS native-fatten bootmgfw fat
-    VERBATIM)
+if(NOT ARCH STREQUAL "arm")
+    add_custom_target(efisys
+        COMMAND native-fatten ${CMAKE_CURRENT_BINARY_DIR}/efisys.bin -format 2880 EFIBOOT -boot ${CMAKE_CURRENT_BINARY_DIR}/freeldr/bootsect/fat.bin -mkdir EFI -mkdir EFI/BOOT -add $<TARGET_FILE:bootmgfw> EFI/BOOT/boot${EFI_PLATFORM_ID}.efi
+        DEPENDS native-fatten bootmgfw fat
+        VERBATIM)
+else()
+    #stub
+    add_custom_target(efisys)
+endif()
 
 ##bootcd
 #clear it out
@@ -68,4 +73,6 @@
 
 add_subdirectory(freeldr)
 add_subdirectory(bootdata)
-add_subdirectory(environ)
+if(NOT ARCH STREQUAL "arm")
+    add_subdirectory(environ)
+endif()