嵌入式平台下的ldd

x86平台有ldd可以很方便的查看对库的依赖关系，但在嵌入式linux环境中没有这个命令，替而代之是

CC=$(CROSS_COMPILE)gcc

LDD=$(CROSS_COMPILE)readelf

范例

$(CROSS_COMPILE)readelf -d SDKDemo_video 
Dynamic section at offset 0x1a88 contains 22 entries:
  Tag        Type                         Name/Value
 0x00000001 (NEEDED)                     Shared library: [libtxdevicesdk.so]
 0x00000001 (NEEDED)                     Shared library: [libpthread.so.0]
 0x00000001 (NEEDED)                     Shared library: [libdl.so.0]
 0x00000001 (NEEDED)                     Shared library: [libstdc++.so.6]
 0x00000001 (NEEDED)                     Shared library: [libc.so.0]
 0x0000000c (INIT)                       0x87cc
 0x0000000d (FINI)                       0x96d0
 0x00000019 (INIT_ARRAY)                 0x11a7c
 0x0000001b (INIT_ARRAYSZ)               4 (bytes)
 0x0000001a (FINI_ARRAY)                 0x11a80
 0x0000001c (FINI_ARRAYSZ)               4 (bytes)
 0x00000004 (HASH)                       0x8108
 0x00000005 (STRTAB)                     0x84ec
 0x00000006 (SYMTAB)                     0x824c
 0x0000000a (STRSZ)                      512 (bytes)
 0x0000000b (SYMENT)                     16 (bytes)
 0x00000015 (DEBUG)                      0x0
 0x00000003 (PLTGOT)                     0x11b60
 0x00000002 (PLTRELSZ)                   224 (bytes)
 0x00000014 (PLTREL)                     REL
 0x00000017 (JMPREL)                     0x86ec
 0x00000000 (NULL)                       0x0