My build script for cocos2d-x. It should work on any posix system. posix lua module is required, ansicolors is required for colorful output.

cocos-build-android

#!/usr/bin/lua

local AVD_BINARY = '/home/v/compile/android-sdk-linux/tools/qemu/linux-x86_64/qemu-system-x86_64'
local ADB_BINARY = '/home/v/compile/android-sdk-linux/platform-tools/adb'
-- I know, hardcoding is bad, but any other way is too expensive :-(

local colors

do
	local ok
	ok, colors = pcall(require, 'ansicolors')
	if not ok then -- Replace with no-op
		colors = function(str)
			return (str:gsub('%%{.-}', ''))
		end
	end
end

local posix = require 'posix'

local function execute(file, ...)
	local pid = assert(posix.fork())
	local t = {...}
	if pid == 0 then
		-- Child
		t[0] = file
		assert(posix.exec(file, t))
		error('Something is TERRIBLE wrong! Run away and contact you admin!')
	else
		-- Parent
		local pid1,death,code = posix.wait(pid)
		assert(pid1,death,code)
		if death == 'killed' or death == 'stopped' then
			print(colors("%{bright red}Command %s %s killed or stopped with signal #%d"):format(file, table.concat(t, ' '), code))
			return false
		elseif code ~= 0 then
			print(colors("%{bright red}Command %s %s exited with code #%d"):format(file, table.concat(t, ' '), code))
			return false
		else
			return true
		end
	end
end

local function execute_daemon(file, ...)
	local pid = assert(posix.fork())
	local t = {...}
	if pid == 0 then
		-- Child
		t[0] = file
		posix.signal(posix.SIGHUP, posix.SIG_IGN)
		local null = assert(io.open('/dev/null', 'r'))
		posix.dup2(posix.fileno(null), posix.STDIN_FILENO)
		assert(posix.exec(file, t))
		error('Something is TERRIBLE wrong! Run away and contact you admin!')
	else
		-- Parent
		posix.sleep(5) -- Check state after 5 seconds
		local pid1,death,code = posix.wait(pid, posix.WNOHANG)
		assert(pid1,death,code)
		if death == 'running' then
			return true
		elseif death == 'killed' or death == 'stopped' then
			print(colors("%{bright red}Command %s %s killed or stopped with signal #%d"):format(file, table.concat(t, ' '), code))
			return false
		else
			print(colors("%{bright red}Command %s %s exited with code #%d"):format(file, table.concat(t, ' '), code))
			return false
		end
	end
end

local conf = {
	dir = '.'; -- d
	avd = nil; -- e
	spec = nil; -- s
	debug = true; -- m
	install = false; -- i
	cmake_log = false; -- c
}

for r, optarg, optind in posix.getopt(arg, 'hd:e:s:m:ic') do
	if r == '?' then
		error(('unrecognized option %s, try -h to show help'):format(arg[optind -1]))
	elseif r == ':' then
		error(('missing argument to %s, try -h to show help'):format(arg[optind -1]))
	end
	if r == 'h' then
		print 'Script for cocos2d-x android build by Valeri Ochinski'
		print ''
		print 'Usage:'
		print '-h                  print this help text'
		print '-d DIR              cocos2d-x project root'
		print '-e AVD              name of started avd'
		print '-s SPEC             if using split apk, set which one will de deployed (e.g. `x86`, `armeabi-v7a`)'
		print '-m (debug|release)  build type (default is debug)'
		print '-i                  install to device'
		print '-c                  in case of failure, print CMake log'
		return
	elseif r == 'd' then
		conf.dir = optarg
	elseif r == 'e' then
		conf.avd = optarg
	elseif r == 's' then
		conf.spec = optarg
	elseif r == 'm' then
		if optarg:lower() == 'debug' then
			conf.debug = true
		elseif optarg:lower() == 'release' then
			conf.debug = flase
		else
			error('Wrong build mode')
		end
	elseif r == 'i' then
		conf.install = true
	elseif r == 'c' then
		conf.cmake_log = true
	end
end

assert(posix.chdir(conf.dir..'/proj.android'))

print (colors('%{green}Running %s build. Best of luck! :-)'):format(conf.debug and 'debug' or 'release'))

if not execute('./gradlew', '--parallel', '--info', conf.debug and 'assembleDebug' or 'assembleRelease') then
	print(colors('%{bright red}Build failed (—_—)'))
	if conf.cmake_log then
		print 'There is CMake server log:'
		for k,v in pairs(posix.glob('app/.externalNativeBuild/cmake/*/*/cmake_server_log.txt')) do
			print(colors("%{bright magenta}---------- %s ----------"):format(v))
			local f = io.open(v, 'r')
			print(f:read('*a'))
			f:close()
		end
	end
	print(colors('%{green}Have a good time fixing bugs! Be positive! :-)'))
	return 1
end

print(colors('%{bright green}Build is successful! Congratulations!'))

if conf.install then
	local apk = ('./app/build/outputs/apk/%s/%s'):format(conf.debug and 'debug' or 'release', '%s')
	if conf.spec then
		apk = apk:format(('*-%s-%s.apk'):format(conf.spec, conf.debug and 'debug' or 'release'))
	else
		apk = apk:format(('*-%s.apk'):format(conf.debug and 'debug' or 'release'))
	end
	apk = (posix.glob(apk) or {})[1]
	if not apk or not posix.access(apk, 'r') then
		print(colors('%{bright red}APK not found… are you using separate apk build? Are you sure?'))
		return 1
	end
	print(colors('%{green}APK to be installed: %s'):format(apk))
	
	if conf.avd then
		print(colors('%{green}Starting AVD %s…'):format(conf.avd))
		if not execute_daemon(AVD_BINARY, '-avd', conf.avd) then
			print(colors('%{bright red}Starting AVD %s failed. Check log for details.'):format(conf.avd))
			return 1
		end
		print(colors('%{green}AVD %s is started successfully :-)'):format(conf.avd))
		print(colors('%{green}Wait some time before it will boot…'):format(conf.avd))
		posix.sleep(20)
	end
	
	print(colors('%{green}Deploying apk'))
	if not execute(ADB_BINARY, 'install', '-r', apk) then
		print(colors('%{bright red}Installing on device failed :-('):format(conf.avd))
		return 1
	end
	print(colors('%{green}APK is successfully installed'))
end

print(colors('%{bright green}Everything is done!'))