a.out file refers to libfoo.a for a.o and b.o, which is what we want to accomplish for
this test case.

[16:17:44] johnny:/Volumes/data/lldb/svn/latest/test/functionalities/archives $ dsymutil -s a.out 
----------------------------------------------------------------------
Symbol table for: 'a.out' (x86_64)
----------------------------------------------------------------------
Index    n_strx   n_type             n_sect n_desc n_value
======== -------- ------------------ ------ ------ ----------------
[     0] 00000002 64 (N_SO         ) 00     0000   0000000000000000 '/Volumes/data/lldb/svn/latest/test/functionalities/archives/'
[     1] 0000003f 64 (N_SO         ) 00     0000   0000000000000000 'main.c'
[     2] 00000046 66 (N_OSO        ) 03     0001   000000004f0f780c '/Volumes/data/lldb/svn/latest/test/functionalities/archives/main.o'
[     3] 00000001 2e (N_BNSYM      ) 01     0000   0000000100000d70
[     4] 00000089 24 (N_FUN        ) 01     0000   0000000100000d70 '_main'
[     5] 00000001 24 (N_FUN        ) 00     0000   000000000000005d
[     6] 00000001 4e (N_ENSYM      ) 01     0000   000000000000005d
[     7] 00000001 64 (N_SO         ) 01     0000   0000000000000000
[     8] 00000002 64 (N_SO         ) 00     0000   0000000000000000 '/Volumes/data/lldb/svn/latest/test/functionalities/archives/'
[     9] 0000008f 64 (N_SO         ) 00     0000   0000000000000000 'a.c'
[    10] 00000093 66 (N_OSO        ) 03     0001   000000004f0f780c '/Volumes/data/lldb/svn/latest/test/functionalities/archives/libfoo.a(a.o)'
[    11] 00000001 2e (N_BNSYM      ) 01     0000   0000000100000dd0
[    12] 000000dd 24 (N_FUN        ) 01     0000   0000000100000dd0 '_a'
[    13] 00000001 24 (N_FUN        ) 00     0000   0000000000000020
[    14] 00000001 4e (N_ENSYM      ) 01     0000   0000000000000020
[    15] 00000001 2e (N_BNSYM      ) 01     0000   0000000100000df0
[    16] 000000e0 24 (N_FUN        ) 01     0000   0000000100000df0 '_aa'
[    17] 00000001 24 (N_FUN        ) 00     0000   0000000000000018
[    18] 00000001 4e (N_ENSYM      ) 01     0000   0000000000000018
[    19] 000000e4 20 (N_GSYM       ) 00     0000   0000000000000000 '___a_global'
[    20] 00000001 64 (N_SO         ) 01     0000   0000000000000000
[    21] 00000002 64 (N_SO         ) 00     0000   0000000000000000 '/Volumes/data/lldb/svn/latest/test/functionalities/archives/'
[    22] 000000f0 64 (N_SO         ) 00     0000   0000000000000000 'b.c'
[    23] 000000f4 66 (N_OSO        ) 03     0001   000000004f0f780c '/Volumes/data/lldb/svn/latest/test/functionalities/archives/libfoo.a(b.o)'
[    24] 00000001 2e (N_BNSYM      ) 01     0000   0000000100000e10
[    25] 0000013e 24 (N_FUN        ) 01     0000   0000000100000e10 '_b'
[    26] 00000001 24 (N_FUN        ) 00     0000   0000000000000020
[    27] 00000001 4e (N_ENSYM      ) 01     0000   0000000000000020
[    28] 00000001 2e (N_BNSYM      ) 01     0000   0000000100000e30
[    29] 00000141 24 (N_FUN        ) 01     0000   0000000100000e30 '_bb'
[    30] 00000001 24 (N_FUN        ) 00     0000   0000000000000018
[    31] 00000001 4e (N_ENSYM      ) 01     0000   0000000000000018
[    32] 00000145 26 (N_STSYM      ) 0a     0000   000000010000104c '___b_global'
[    33] 00000001 64 (N_SO         ) 01     0000   0000000000000000
[    34] 00000151 0e (     SECT    ) 07     0000   0000000100001000 '_pvars'
[    35] 00000158 0e (     SECT    ) 0a     0000   000000010000104c '___b_global'
[    36] 00000164 0f (     SECT EXT) 0b     0000   0000000100001050 '_NXArgc'
[    37] 0000016c 0f (     SECT EXT) 0b     0000   0000000100001058 '_NXArgv'
[    38] 00000174 0f (     SECT EXT) 0a     0000   0000000100001048 '___a_global'
[    39] 00000180 0f (     SECT EXT) 0b     0000   0000000100001068 '___progname'
[    40] 0000018c 03 (     ABS  EXT) 01     0010   0000000100000000 '__mh_execute_header'
[    41] 000001a0 0f (     SECT EXT) 01     0000   0000000100000dd0 '_a'
[    42] 000001a3 0f (     SECT EXT) 01     0000   0000000100000df0 '_aa'
[    43] 000001a7 0f (     SECT EXT) 01     0000   0000000100000e10 '_b'
[    44] 000001aa 0f (     SECT EXT) 01     0000   0000000100000e30 '_bb'
[    45] 000001ae 0f (     SECT EXT) 0b     0000   0000000100001060 '_environ'
[    46] 000001b7 0f (     SECT EXT) 01     0000   0000000100000d70 '_main'
[    47] 000001bd 0f (     SECT EXT) 01     0000   0000000100000d30 'start'
[    48] 000001c3 01 (     UNDF EXT) 00     0100   0000000000000000 '_exit'
[    49] 000001c9 01 (     UNDF EXT) 00     0100   0000000000000000 '_printf'
[    50] 000001d1 01 (     UNDF EXT) 00     0100   0000000000000000 'dyld_stub_binder'