Android6.0编译时out目录下文件无法自动生成问题解决方案

Android6.0编译时需要使用openjdk7编译，然后服务器上还有别的项目需要使用openjdk6进行编译，于是在编译时就出现了一些问题

Installing recovery patch to system partition
Warning: could not find SYSTEM/build.prop in 
using prebuilt recovery.img from BOOTABLE_IMAGES...
using prebuilt boot.img from BOOTABLE_IMAGES...
Traceback (most recent call last):
  File "./build/tools/releasetools/make_recovery_patch", line 53, in 
    main(sys.argv[1:])
  File "./build/tools/releasetools/make_recovery_patch", line 49, in main
    common.MakeRecoveryPatch(input_dir, output_sink, recovery_img, boot_img)
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 1398, in MakeRecoveryPatch
    _, _, patch = d.ComputePatch()
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 1089, in ComputePatch
    p = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 83, in Run
    return subprocess.Popen(args, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
make: *** [out/target/product/msm8909/system/bin/install-recovery.sh] 错误 1

#### make failed to build some targets (06:30 (mm:ss)) ####

首先遇到的第一个问题就是out目录下build.prop文件找不到，该文件是在编译时由make系统解析build/core/Makefile文件自动生成的

当时根本没往jdk版本问题那个方向考虑，因为在别的终端该项目可以编译成功，所以就将编译成功后的build.prop拷了过来，拷过来之后就会发现问题了，out目录下又会有一个文件找不到

Installing recovery patch to system partition
Warning: could not find SYSTEM/build.prop in 
using prebuilt recovery.img from BOOTABLE_IMAGES...
using prebuilt boot.img from BOOTABLE_IMAGES...
Traceback (most recent call last):
  File "./build/tools/releasetools/make_recovery_patch", line 53, in 
    main(sys.argv[1:])
  File "./build/tools/releasetools/make_recovery_patch", line 49, in main
    common.MakeRecoveryPatch(input_dir, output_sink, recovery_img, boot_img)
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 1398, in MakeRecoveryPatch
    _, _, patch = d.ComputePatch()
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 1089, in ComputePatch
    p = Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  File "/Public/zhangruifang/R3/android/build/tools/releasetools/common.py", line 83, in Run
    return subprocess.Popen(args, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
make: *** [out/target/product/msm8909/system/bin/install-recovery.sh] 错误 1

#### make failed to build some targets (06:30 (mm:ss)) #### 

又是out目录下该生成的文件没有生成，然后就想直接把out目录删掉，从编译成功的项目中拷过来，但最终是治标不治本，终于在昨天解决了这个问题

先在项目的Android目录下执行版本切换命令. jdk7.sh  ，这个是切换版本的脚本文件

然后到根目录下去执行source .profile命令，然后再到项目Android目录下去编译，ok问题解决