Appearantly, the fdopen implementation (and several other things) changed
between glibc 2.0 and 2.1. The @@GLIBC_X.X indicates which behavior you get.
I think there may be some global variable that lives in the application that
says which version it was linked against, but I'm not sure of the details (but
need to learn & document it).
The mangle section of the specification is for this type of thing. The source
signature
FILE * fdopen(int fildes, const char *mode)
is mangled to
FOO * fdopen@@GLIBC_2.0(..????..)
Again, I haven't figured out all of the details, but need to before our
next meeting.
On Mon, 8 Nov 1999 [EMAIL PROTECTED] wrote:
>
>
> While trying to inventory the APIs and libraries used by applications such
> as StarOffice51 and WordPerfect8 I have stumbled across some redundant APIs
> with @GLIBC_2.0 and @@GLIBC_2.1 suffixes on RedHat 6.0. So, for example,
> if I look at Netscape Communicator 4.7 I see that "fdopen" is undefined and
> needs to be resolved.
>
> [EMAIL PROTECTED] gk4]$ nm -D -g /usr/local/netscape/netscape | grep fdopen
> U fdopen
>
> Looking at what libraries are dynamically linked, I see libc.so.6 is linked
> to netscape to resolve "fdopen".
>
> [EMAIL PROTECTED] gk4]$ ldd /usr/local/netscape/netscape
> libBrokenLocale.so.1 => /lib/libBrokenLocale.so.1 (0x40018000)
> libXt.so.6 => /usr/X11R6/lib/libXt.so.6 (0x4001a000)
> libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x40064000)
> libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x4006e000)
> libXmu.so.6 => /usr/X11R6/lib/libXmu.so.6 (0x40083000)
> libXpm.so.4 => /usr/X11R6/lib/libXpm.so.4 (0x40095000)
> libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x400a2000)
> libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x400ad000)
> libdl.so.2 => /lib/libdl.so.2 (0x4014a000)
> libstdc++-libc6.1-1.so.2 => /usr/lib/libstdc++-libc6.1-1.so.2
> (0x4014d000)
> libm.so.6 => /lib/libm.so.6 (0x40190000)
> libc.so.6 => /lib/libc.so.6 (0x401ac000)
> /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
>
> However, when I look in libc.so.6 I see two "fdopen" definitions with
> either a @GLIBC_2.0 or @@GLIBC_2.1 suffix!
>
> [EMAIL PROTECTED] gk4]$ nm -g /lib/libc.so.6 | grep fdopen
> 00050ae0 T _IO_fdopen@@GLIBC_2.1
> 00053410 T [EMAIL PROTECTED]
> 00050ae0 T fdopen@@GLIBC_2.1
> 00053410 T [EMAIL PROTECTED]
>
> How is "fdopen" being resolved? What is the purpose of the @GLIBC_2.0 or
> @@GLIBC_2.1 suffixes?
>
> George Kraft IV
> [EMAIL PROTECTED]
> 512-838-2688; t/l 678-2688
> Linux Technology Center
> IBM, Austin Texas
>
>
>
> --
> To UNSUBSCRIBE, email to [EMAIL PROTECTED]
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>
Stuart
Stuart R. Anderson [EMAIL PROTECTED]
Metro Link Incorporated South Carolina Office
4711 North Powerline Road 129 Secret Cove Drive
Fort Lauderdale, Florida 33309 Lexington, SC 29072
voice: 954.938.0283 voice: 803.951.3630
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