13. View dynamic library dependency

• for Windows, use dependency-walker

• for linux, use ldd command

  ldd libjpeg.so
  ldd: warning: you do not have execution permission for `./libjpeg.so'
  linux-vdso.so.1 =>  (0x00007ffea15a2000)
  libc.so.6 => /lib64/libc.so.6 (0x00007f8949b12000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f894a138000)

• for android , use readelf in ndk,

  PS D:\android\program\adt\ndk_r16b\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64\arm-linux-androideabi\bin> 
  .\readelf.exe -d D:\android\samples\app\libs\armeabi-v7a\libQt5Core.so
  
  Dynamic section at offset 0x72f0a4 contains 33 entries:
  Tag        Type                         Name/Value
  0x00000003 (PLTGOT)                     0x730784
  0x00000002 (PLTRELSZ)                   28896 (bytes)
  0x00000017 (JMPREL)                     0x73c8c
  0x00000014 (PLTREL)                     REL
  0x00000011 (REL)                        0x6aba4
  0x00000012 (RELSZ)                      37096 (bytes)
  0x00000013 (RELENT)                     8 (bytes)
  0x6ffffffa (RELCOUNT)                   1956
  0x00000006 (SYMTAB)                     0x1f0
  0x0000000b (SYMENT)                     16 (bytes)
  0x00000005 (STRTAB)                     0x18b50
  0x0000000a (STRSZ)                      236876 (bytes)
  0x6ffffef5 (GNU_HASH)                   0x5289c
  0x00000004 (HASH)                       0x5d790
  0x00000001 (NEEDED)                     Shared library: [libz.so]
  0x00000001 (NEEDED)                     Shared library: [libc++_shared.so]
  0x00000001 (NEEDED)                     Shared library: [liblog.so]
  0x00000001 (NEEDED)                     Shared library: [libm.so]
  0x00000001 (NEEDED)                     Shared library: [libdl.so]
  0x00000001 (NEEDED)                     Shared library: [libc.so]
  0x0000000e (SONAME)                     Library soname: [libQt5Core.so]
  0x0000001a (FINI_ARRAY)                 0x730088
  0x0000001c (FINI_ARRAYSZ)               16 (bytes)
  0x00000019 (INIT_ARRAY)                 0x730098
  0x0000001b (INIT_ARRAYSZ)               12 (bytes)
  0x0000001e (FLAGS)                      BIND_NOW
  0x6ffffffb (FLAGS_1)                    Flags: NOW
  0x6ffffff0 (VERSYM)                     0x679fc
  0x6ffffffc (VERDEF)                     0x6ab28
  0x6ffffffd (VERDEFNUM)                  1
  0x6ffffffe (VERNEED)                    0x6ab44
  0x6fffffff (VERNEEDNUM)                 3
  0x00000000 (NULL)                       0x0