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To: Arindam <arindam.mukerjee@gmail.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Restricting symbol binding within shared object
References: <d85a51ff0808190837n3a30ab98ld21257f1471f499d@mail.gmail.com> 	<m33al17xd7.fsf@google.com> 	<d85a51ff0808201230w78c1bb0axf19a1b443088a79b@mail.gmail.com>
From: Ian Lance Taylor <iant@google.com>
Date: Thu, 21 Aug 2008 04:43:00 -0000
In-Reply-To: <d85a51ff0808201230w78c1bb0axf19a1b443088a79b@mail.gmail.com> (Arindam's message of "Thu\, 21 Aug 2008 01\:00\:34 +0530")
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Arindam <arindam.mukerjee@gmail.com> writes:

>> With a newer version of gcc you can use visibility attributes.  That
>> is probably your best approach here.
>>
>> http://gcc.gnu.org/onlinedocs/gcc-4.3.0/gcc/Function-Attributes.html#Function-Attributes
>>
>> search for
>>    visibility ("visibility_type")
>>
>
> Cool ... so this mimics the Windows __declspec(dllexport) kind of
> declarations. I know that newer versions of Sun Studio have
> essentially the same functionality (albeit with a less obnoxious
> syntax). I need to figure out if aCC on HP-UX has something similar
> too. Is this a new thing on ELF format?

It works for Mach-O (used on Mac OS) as well.

Ian