Makefile generated on x86 Android is lack of something compared with arm Android

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Download webrtc source code: gclient config 
http://webrtc.googlecode.com/svn/trunk && gclient sync --nohooks
2. Generate makefiles on x86 Android: source build/android/envsetup.sh 
--target-arch=x86 && gclient runhooks
3. Generate makefiles on arm Android: source build/android/envsetup.sh 
--target-arch=arm && gclient runhooks
4. Compare the generated makefiles like 
/trunk/webrtc/video_engine/video_engine_core.target.mk

What is the expected output? What do you see instead?
The generated makefiles on arm Android will add a copy behavior like:
# Copy this to the static library output path
.........
But the generated makefiles on x86 Android do NOT have these.

What version of the product are you using? On what operating system?
Product: Latest webrtc trunk version
Operating System: Ubuntu 10.04

Please provide any additional information below.

Original issue reported on code.google.com by yujie.mao@intel.com on 3 Apr 2013 at 1:54

[GoogleCodeExporter]

please assign to me, so I can change status.

Original comment by leozw...@webrtc.org on 3 Apr 2013 at 3:16

[GoogleCodeExporter]

Sorry, I don't know how add assign this bug to you, since I don't have the 
access right.

Original comment by yujie.mao@intel.com on 4 Apr 2013 at 3:38