import sys
import os, os.path
import shutil
from optparse import OptionParserCPP_SAMPLES = ['cpp-empty-test', 'cpp-tests']
LUA_SAMPLES = ['lua-empty-test', 'lua-tests']
ALL_SAMPLES = CPP_SAMPLES + LUA_SAMPLES

CPP_SAMPLES = ['cpp-empty-test', 'cpp-tests']

def get_num_of_cpu():''' The build process can be accelerated by running multiple concurrent job processes using the -j-option.'''try:platform = sys.platformif platform == 'win32':if 'NUMBER_OF_PROCESSORS' in os.environ:return int(os.environ['NUMBER_OF_PROCESSORS'])else:return 1else:from numpy.distutils import cpuinforeturn cpuinfo.cpu._getNCPUs()except Exception:print "Can't know cpuinfo, use default 1 cpu"return 1

 platform = sys.platform

os.environ['NUMBER_OF_PROCESSORS']

def check_environment_variables():

def check_environment_variables_sdk():

def select_toolchain_version():

def do_build(cocos_root, ndk_root, app_android_root, ndk_build_param,sdk_root,android_platform,build_mode):ndk_path = os.path.join(ndk_root, "ndk-build")# windows should use ";" to seperate module pathsplatform = sys.platformif platform == 'win32':ndk_module_path = 'NDK_MODULE_PATH=%s;%s/external;%s/cocos' % (cocos_root, cocos_root, cocos_root)else:ndk_module_path = 'NDK_MODULE_PATH=%s:%s/external:%s/cocos' % (cocos_root, cocos_root, cocos_root)num_of_cpu = get_num_of_cpu()if ndk_build_param == None:command = '%s -j%d -C %s %s' % (ndk_path, num_of_cpu, app_android_root, ndk_module_path)else:command = '%s -j%d -C %s %s %s' % (ndk_path, num_of_cpu, app_android_root, ndk_build_param, ndk_module_path)print commandif os.system(command) != 0:raise Exception("Build dynamic library for project [ " + app_android_root + " ] fails!")elif android_platform is not None:sdk_tool_path = os.path.join(sdk_root, "tools/android")cocoslib_path = os.path.join(cocos_root, "cocos/platform/android/java")command = '%s update lib-project -t %s -p %s' % (sdk_tool_path,android_platform,cocoslib_path)if os.system(command) != 0:raise Exception("update cocos lib-project [ " + cocoslib_path + " ] fails!")command = '%s update project -t %s -p %s -s' % (sdk_tool_path,android_platform,app_android_root)if os.system(command) != 0:raise Exception("update project [ " + app_android_root + " ] fails!")buildfile_path = os.path.join(app_android_root, "build.xml")command = 'ant clean %s -f %s -Dsdk.dir=%s' % (build_mode,buildfile_path,sdk_root)os.system(command)

ndk_path = os.path.join(ndk_root, "ndk-build")

    num_of_cpu = get_num_of_cpu()if ndk_build_param == None:command = '%s -j%d -C %s %s' % (ndk_path, num_of_cpu, app_android_root, ndk_module_path)else:command = '%s -j%d -C %s %s %s' % (ndk_path, num_of_cpu, app_android_root, ndk_build_param, ndk_module_path)

if os.system(command) != 0:raise Exception("Build dynamic library for project [ " + app_android_root + " ] fails!")

ndk_module_path 指示引入外部参考库的文件路径，在android.mk中会用到。
ndk_build_param 这个参数脚本示例用的是 -p，在ndk文档里没找到这个参数，不知道其作用。
sdk_tool_path = os.path.join(sdk_root, "tools/android") 获取sdk目录下android命令的执行路径，用来使用"android",执行update操作.
cocoslib_path = os.path.join(cocos_root, "cocos/platform/android/java") 获取引擎里的java库工程路径
command = '%s update lib-project -t %s -p %s' % (sdk_tool_path,android_platform,cocoslib_path)command = '%s update project -t %s -p %s -s' % (sdk_tool_path,android_platform,app_android_root)

buildfile_path = os.path.join(app_android_root, "build.xml")
command = 'ant clean %s -f %s -Dsdk.dir=%s' % (build_mode,buildfile_path,sdk_root)

def copy_resources(target, app_android_root): 用来拷贝资源的，包括src下的代码，resource,asset下的资源文件。在ant打包时会把拷贝的资源打到apk里，基本上都是python文件操作的内容。还包括shutil高级文件操作模块。感兴趣的童鞋就去学习python吧。:)
def build_samples(target,ndk_build_param,android_platform,build_mode):当前脚本文件编译的samples。我们这个脚本就是运行这个方法来执行拷资源，编译，打包的。

# -------------- main --------------
if __name__ == '__main__':#parse the paramsusage = """This script is mainy used for building tests built-in with cocos2d-x.Usage: %prog [options] [cpp-empty-test|cpp-tests|lua-empty-test|lua-tests|cpp|lua|all]If you are new to cocos2d-x, I recommend you start with cpp-empty-test, lua-empty-test.You can combine these targets like this:python android-build.py -p 10 cpp-empty-test lua-empty-testNote: You should install ant to generate apk while building the andriod tests. But it is optional. You can generate apk with eclipse."""parser = OptionParser(usage=usage)parser.add_option("-n", "--ndk", dest="ndk_build_param",help='Parameter for ndk-build')parser.add_option("-p", "--platform", dest="android_platform",help='Parameter for android-update. Without the parameter,the script just build dynamic library for the projects. Valid android-platform are:[10|11|12|13|14|15|16|17|18|19]')parser.add_option("-b", "--build", dest="build_mode",help='The build mode for java project,debug[default] or release. Get more information,please refer to http://developer.android.com/tools/building/building-cmdline.html')(opts, args) = parser.parse_args()if len(args) == 0:parser.print_help()sys.exit(1)else:try:build_samples(args, opts.ndk_build_param,opts.android_platform,opts.build_mode)except Exception as e:print esys.exit(1)

parser = OptionParser(usage=usage)