为Android,交叉编译busybox

 本文介绍的是用Android NDK方式去编译busybox, 编译环境: Mac OS X EI 10.11 使用环境：三星N910p、Android 6.0.1、已ROOT。

准备

NDK下载

https://developer.android.com/ndk/downloads/index.html

Busybox的源代码下载

http://busybox.net/downloads/

下载最新版 busybox-1.24.2.tar.bz2

编译busybox

解压后进入源码目录

$ cp configs/android_ndk_defconfig .config

修改.config文件内容，修改CONFIG_SYSROOT及CONFIG_PIE

CONFIG_SYSROOT="/Users/kule/android-ndk-r10e/platforms/android-15/arch-arm"
CONFIG_PIE=y

开始编译

# 清空环境变量
$ export CFLAGS=
$ export LDFLAGS=
$ make

其间如果提示找不到相关头文件，则禁用相关功能则可 编译成功后，在根目录下会出现busybox文件

安装busybox

将手机开启debug模式，然后连上电脑

 #将busybox push进SD卡
$ adb push busybox /sdcard/
 #进入终端
$ adb shell
 #取得root权限
$ su 
 #重新mount使/system可写
$ mount -o remount,rw /dev/block/mtdblock6 /system 
 #移动busybox
$ mv /sdcard/busybox /system/bin/ 
 #设为可执行
$ chmod 755 /system/bin/busybox 
 #恢复/system为只读
$ mount -o remount,ro /dev/block/mtdblock6 /system 

测试

 #进入终端
$ adb shell
 #执行busybox
$ busybox 
BusyBox v1.24.2 (2016-05-20 03:21:26 CST) multi-call binary.
BusyBox is copyrighted by many authors between 1998-2015.
Licensed under GPLv2. See source distribution for detailed
copyright notices.

Usage: busybox [function [arguments]...]
   or: busybox --list[-full]
   or: busybox --install [-s] [DIR]
   or: function [arguments]...

	BusyBox is a multi-call binary that combines many common Unix
	utilities into a single executable.  Most people will create a
	link to busybox for each function they wish to use and BusyBox
	will act like whatever it was invoked as.

Currently defined functions:
	[, [[, ar, arp, awk, base64, basename, bbconfig, beep, blkid, blockdev,
	bootchartd, bunzip2, bzcat, bzip2, cal, cat, catv, chat, chattr, chgrp,
	chmod, chown, chpst, chroot, chrt, chvt, cksum, clear, cmp, comm, cp,
	cpio, crond, crontab, cttyhack, cut, dc, dd, deallocvt, depmod, devmem,
	diff, dirname, dmesg, dnsd, dos2unix, dpkg, dpkg-deb, du, dumpkmap,
	echo, ed, egrep, env, envdir, envuidgid, expand, expr, fakeidentd,
	false, fatattr, fbset, fbsplash, fdflush, fdformat, fdisk, fgconsole,
	fgrep, find, findfs, flash_lock, flash_unlock, flashcp, flock, fold,
	free, freeramdisk, fstrim, fsync, ftpd, ftpget, ftpput, fuser, getopt,
	grep, gunzip, gzip, halt, hd, hdparm, head, hexdump, httpd, hwclock,
	ifconfig, ifdown, ifup, init, inotifyd, insmod, install, iostat, ip,
	ipaddr, ipcalc, iplink, iproute, iprule, iptunnel, klogd, less,
	linuxrc, ln, loadkmap, losetup, lpd, lpq, lpr, ls, lsattr, lsmod, lsof,
	lspci, lsusb, lzcat, lzma, lzop, lzopcat, makedevs, makemime, man,
	md5sum, mesg, mkdir, mkfifo, mknod, mkswap, mktemp, modinfo, modprobe,
	more, mpstat, mv, nanddump, nbd-client, nc, netstat, nice, nmeter,
	nohup, od, openvt, patch, pidof, ping, pipe_progress, pmap, popmaildir,
	poweroff, powertop, printenv, printf, ps, pscan, pstree, pwd, pwdx,
	raidautorun, rdev, readlink, readprofile, realpath, reboot, reformime,
	renice, reset, resize, rev, rm, rmdir, rmmod, route, rpm, rpm2cpio,
	rtcwake, run-parts, runsv, runsvdir, rx, script, scriptreplay, sed,
	sendmail, seq, setconsole, setkeycodes, setlogcons, setserial, setsid,
	setuidgid, sha1sum, sha256sum, sha3sum, sha512sum, showkey, shuf,
	sleep, smemcap, softlimit, sort, split, start-stop-daemon, strings,
	stty, sum, sv, svlogd, switch_root, sync, sysctl, tac, tail, tar,
	tcpsvd, tee, telnet, telnetd, test, tftp, tftpd, time, timeout, top,
	touch, tr, traceroute, true, truncate, ttysize, tunctl, tune2fs,
	udhcpc, udpsvd, uevent, uname, uncompress, unexpand, uniq, unix2dos,
	unlink, unlzma, unlzop, unxz, unzip, uptime, usleep, uudecode,
	uuencode, vconfig, vi, volname, watch, wc, wget, which, whoami, whois,
	xargs, xz, xzcat, yes, zcat

有类似以上内容输出,表示安装成功.