Query related to Hiding symbol in Shared Library

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Hi,

I have a question:

Suppose i have a source code file as

test.c
------------

C Syntax (Toggle Plain Text)
 
#include <stdio.h>
void __attribute__ (( visibility ("hidden") )) sayHello (void)
{
   printf("hello");
}
#include <stdio.h>
void __attribute__ (( visibility ("hidden") )) sayHello (void)
{
   printf("hello");
}

i make shared library using gcc say named as libhello.so

now although the function sayHello is not exported to the libhello.so
but when i run this command:

shell> nm libhello.so

the resultant display shows one of the symbol there as sayHello

Is this possible that I completely hide this symbol so that nm doesnt read this local symbol in the library.

Kind Regards

Last edited by nabilchampion; Dec 31st, 2008 at 9:38 am.

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Jan 2nd, 2009

Re: Query related to Hiding symbol in Shared Library

You can use the strip utility to remove all the symbols from your object file.

Alternatively, declare sayHello() to be a static function.

Last edited by fpmurphy; Jan 2nd, 2009 at 10:50 am.

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