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inux下查看动态链接库依赖关系的命令
x86:
ldd *.so
arm:
arm-linux-readelf -d *.so
实际例子:
以项目中用到的库librtsp.so分析：
lijun@ubuntu:~/workspace$arm-hisiv100nptl-linux-ld -d librtsp.so
arm-hisiv100nptl-linux-ld: warning: liblog.so,needed by librtsp.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libcutils.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libutils.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libbinder.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libssl.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libcrypto.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libgui.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libmedia.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libstagefright_foundation.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libc.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: libstdc++.so,not found (try using -rpath or -rpath-link)
arm-hisiv100nptl-linux-ld: warning: cannot find entry symbol _start; defaulting to 00008204
librtsp.so: undefined reference to `__aeabi_unwind_cpp_pr0'
librtsp.so: undefined reference to `operator new[](unsigned int)'
librtsp.so: undefined reference to `__sF'
librtsp.so: undefined reference to `operator delete[](void*)'
librtsp.so: undefined reference to `_Unwind_Resume_or_Rethrow'
librtsp.so: undefined reference to `_Unwind_VRS_Get'
librtsp.so: undefined reference to `_toupper_tab_'
librtsp.so: undefined reference to `__gnu_unwind_frame'
librtsp.so: undefined reference to `__memset_chk'
librtsp.so: undefined reference to `pthread_key_create'
librtsp.so: undefined reference to `_Unwind_RaiseException'
librtsp.so: undefined reference to `__strcat_chk'
librtsp.so: undefined reference to `operator delete(void*)'
librtsp.so: undefined reference to `__aeabi_unwind_cpp_pr1'
librtsp.so: undefined reference to `_tolower_tab_'
librtsp.so: undefined reference to `__cxa_pure_virtual'
librtsp.so: undefined reference to `_Unwind_VRS_Set'
librtsp.so: undefined reference to `_Unwind_GetLanguageSpecificData'
librtsp.so: undefined reference to `__android_log_print'
librtsp.so: undefined reference to `pthread_getspecific'
librtsp.so: undefined reference to `_Unwind_Resume'
librtsp.so: undefined reference to `__strlen_chk'
librtsp.so: undefined reference to `_ctype_'
librtsp.so: undefined reference to `__isthreaded'
librtsp.so: undefined reference to `_Unwind_Complete'
librtsp.so: undefined reference to `_Unwind_DeleteException'
librtsp.so: undefined reference to `_Unwind_GetTextRelBase'
librtsp.so: undefined reference to `__aeabi_uldivmod'
librtsp.so: undefined reference to `__swbuf'
librtsp.so: undefined reference to `_Unwind_GetDataRelBase'
librtsp.so: undefined reference to `pthread_key_delete'
librtsp.so: undefined reference to `__sprintf_chk'
librtsp.so: undefined reference to `_Unwind_GetRegionStart'
librtsp.so: undefined reference to `__errno'
librtsp.so: undefined reference to `operator new(unsigned int)'
librtsp.so: undefined reference to `pthread_setspecific
arm-hisiv100nptl-linux-readelf -d librtsp.so
Dynamic section at offset 0x93c14 contains 34 entries:
Tag Type Name/Value
0x00000003 (PLTGOT) 0x94e34
0x00000002 (PLTRELSZ) 896 (bytes)
0x00000017 (JMPREL) 0x40a08
0x00000014 (PLTREL) REL
0x00000011 (REL) 0x37eb8
0x00000012 (RELSZ) 35664 (bytes)
0x00000013 (RELENT) 8 (bytes)
0x6ffffffa (RELCOUNT) 4380
0x00000006 (SYMTAB) 0x114
0x0000000b (SYMENT) 16 (bytes)
0x00000005 (STRTAB) 0xe264
0x0000000a (STRSZ) 148452 (bytes)
0x00000004 (HASH) 0x32648
0x00000001 (NEEDED) Shared library: [liblog.so]
0x00000001 (NEEDED) Shared library: [libcutils.so]
0x00000001 (NEEDED) Shared library: [libutils.so]
0x00000001 (NEEDED) Shared library: [libbinder.so]
0x00000001 (NEEDED) Shared library: [libssl.so]
0x00000001 (NEEDED) Shared library: [libcrypto.so]
0x00000001 (NEEDED) Shared library: [libgui.so]
0x00000001 (NEEDED) Shared library: [libmedia.so]
0x00000001 (NEEDED) Shared library: [libstagefright_foundation.so]
0x00000001 (NEEDED) Shared library: [libc.so]
0x00000001 (NEEDED) Shared library: [libstdc++.so]
0x00000001 (NEEDED) Shared library: [libm.so]
0x0000000e (SONAME) Library soname: [librtsp.so]
0x0000001a (FINI_ARRAY) 0x90084
0x0000001c (FINI_ARRAYSZ) 4 (bytes)
0x00000019 (INIT_ARRAY) 0x90088
0x0000001b (INIT_ARRAYSZ) 36 (bytes)
0x00000010 (SYMBOLIC) 0x0
0x0000001e (FLAGS) SYMBOLIC BIND_NOW
0x6ffffffb (FLAGS_1) Flags: NOW
0x00000000 (NULL) 0x0
参考:
apk相关和loadLibrary详解
http://www.cnblogs.com/lijunamneg/archive/2012/11/30/2795577.html
Linux的nm查看动态和静态库中的符号
http://www.cnblogs.com/itech/archive/2012/09/16/2687423.html
Linux命令学习手册-readelf命令
http://blog.chinaunix.net/uid-9525959-id-2001833.html
eCos编译Synthethic Target程序时无法解析__sprintf_chk的解决办法
http://www.52php.cn/article/p-xlhjcxtt-bak.html （编辑：李大同）
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