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
