/*****************************************************************************                 I.MX6 Android busybox 从哪里生成的* 说明：*     一直在Android中找busybox的源代码在哪里，在external文件夹下有一份busybox* 源代码，但是没有Android.mk，以为应该是将Android.mk文件放在了别的地方，结果* 找出来是别的地方放了一份编译好的busybox可执行文件。**                                          2016-8-20 深圳 南山平山村 曾剑锋***************************************************************************/一、参考文档：1. 怎样判断两个bin文件，是不是同一个文件。。两个bin文件，名字不同。不知道内容是不是一样的。http://zhidao.baidu.com/question/486446127.html2. linux md5sum 的用法（转）http://www.cnblogs.com/chenwenbiao/archive/2012/07/10/2585507.html

二、原因：在~/myandroid/external/busybox目录下并没有找到对应Android.mk文件，说明busybox并不是从这份源代码中生成出来的，而是从别的地方生成的，于是得重新找busybox真是的出处。三、cat ~/myandroid/device/fsl-proprietary/test/Android.mkLOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := mxc_ipudev_testLOCAL_MODULE_TAGS := engLOCAL_MODULE_PATH := $(TARGET_OUT)/binLOCAL_MODULE_CLASS := EXECUTABLESLOCAL_SRC_FILES :=  bin/mxc_ipudev_testinclude $(BUILD_PREBUILT)include $(CLEAR_VARS)LOCAL_MODULE := mxc_vpu_testLOCAL_MODULE_TAGS := engLOCAL_MODULE_PATH := $(TARGET_OUT)/binLOCAL_MODULE_CLASS := EXECUTABLESLOCAL_SRC_FILES :=  bin/mxc_vpu_testinclude $(BUILD_PREBUILT)include $(CLEAR_VARS)LOCAL_MODULE := busyboxLOCAL_MODULE_TAGS := optionalLOCAL_MODULE_PATH := $(TARGET_OUT)/binLOCAL_MODULE_CLASS := EXECUTABLESLOCAL_SRC_FILES :=  bin/busyboxinclude $(BUILD_PREBUILT)四、检查两个busybox是否是同一个busybox：myzr@myzr:~/myandroid/device/fsl-proprietary/test/bin$ stat busybox File: `busybox'
      Size: 1634104       Blocks: 3192       IO Block: 4096   regular fileDevice: 801h/2049d    Inode: 1313488     Links: 1Access: (0775/-rwxrwxr-x)  Uid: ( 1000/    myzr)   Gid: ( 1000/    myzr)Access: 2016-08-20 11:09:25.828600234 +0800Modify: 2014-04-11 14:10:13.000000000 +0800Change: 2015-04-02 14:43:27.691788786 +0800Birth: -myzr@myzr:~/myandroid/device/fsl-proprietary/test/bin$ stat /home/myzr/myandroid/out/target/product/sabresd_6dq/obj/EXECUTABLES/busybox_intermediates/busyboxFile: `/home/myzr/myandroid/out/target/product/sabresd_6dq/obj/EXECUTABLES/busybox_intermediates/busybox'
      Size: 1634104       Blocks: 3192       IO Block: 4096   regular fileDevice: 801h/2049d    Inode: 1225352     Links: 1Access: (0775/-rwxrwxr-x)  Uid: ( 1000/    myzr)   Gid: ( 1000/    myzr)Access: 2016-07-18 12:31:09.275109144 +0800Modify: 2016-07-18 12:31:09.255109144 +0800Change: 2016-07-18 12:31:09.255109144 +0800Birth: -myzr@myzr:~/myandroid/device/fsl-proprietary/test/bin$ md5sum /home/myzr/myandroid/out/target/product/sabresd_6dq/obj/EXECUTABLES/busybox_intermediates/busybox7acb4ae8ca9bff56200c3d8ea54926a9  /home/myzr/myandroid/out/target/product/sabresd_6dq/obj/EXECUTABLES/busybox_intermediates/busyboxmyzr@myzr:~/myandroid/device/fsl-proprietary/test/bin$ md5sum busybox 7acb4ae8ca9bff56200c3d8ea54926a9  busyboxmyzr@myzr:~/myandroid/device/fsl-proprietary/test/bin$