Related to Glibc symbols

[Anticipating a Reply]

Hi , 

  In /lib/libc.so.6 on my system , I see
symbols like 
_dl_init@@GLIBC_PRIVATE
_IO_fsetpos@GLIBC_2.0
getgrgid_r@@GLIBC_2.1.2


   What does the suffix GLIBC_* signify and 
how does it get used ? 

   Also how is GLIBC_PRIVATE different from .hidden ?

   How do I write my own Shared library with 
symbols  my_func@GLIBC_version or something similar ?

   The gABI document has left me more confused .
I would appreciate a detailed explanation for a
newbie .

   Thanks .

Cheers !

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