從網上可以找到一些ARM toolchain，但是由於Android系統使用的不是glibc而是Bionic libc。因此只能使用靜態編譯程序。
其實Android的NDK自帶了toolchain，但是不能直接使用NDK目錄內的toolchain，否則會出現找不到crtbegin_dynamic.o文件。
即使用-L指定目錄或者直接放到gcc命令行也還是提示該文件找不到。（參考最後附上的鏈接）。
其實Android NDK提供了腳本來剝離出單獨的toolchain，腳本的名字叫make-standalone-toolchain.sh
1. 下載Android NDK
http://developer.android.com/sdk/ndk/index.html
我用的是android-ndk-r6b
2. 提取toolchain
可以參考文檔docs/STANDALONE-TOOLCHAIN.html
在linux系統中解壓NDK，假設解壓到/opt;
cd /opt/android-ndk-r6b/
build/tools/make-standalone-toolchain.sh --platform=android-8
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(--[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^--[^=]*=\\(.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
Auto-config: --toolchain=arm-linux-androideabi-4.4.3
Copying prebuilt binaries...
Copying sysroot headers and libraries...
Copying libstdc++ headers and libraries...
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(--[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(--.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(--[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^--[^=]*=\\(.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
Creating package file: /tmp/ndk-hansel/arm-linux-androideabi-4.4.3.tar.bz2
Cleaning up...
Done.
有一些警告沒有關系，最終得到的是一個壓縮包 /tmp/ndk-hansel/arm-linux-androideabi-4.4.3.tar.bz2
注意：這個是我的Linux機器上的目錄。
