[ARM] 查看所需的 shared library @ Ubuntu 12.04

以前常用 ldd 來看一支程式到底吃了哪些 shared libraries ，然而在板子上卻不知該如何下手 :P 後來終於找到關鍵字 readelf 啦！所以就先找一下 cross compiler tools：

$ find /path -name "*readelf*"
/path/bin/armv6z-*-linux-gnueabi-readelf

接著用這工具就行：

$ /path/bin/armv6z-*-linux-gnueabi-readelf -a my_arm_tool | grep "Shared"
0x00000001 (NEEDED) Shared library: [libjsqlite.so]
0x00000001 (NEEDED) Shared library: [libjson.so]
0x00000001 (NEEDED) Shared library: [libc.so.6]
...