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Message-ID: <4A05EDD8.6030208@codemonkey.ws>
Date: Sat, 09 May 2009 15:55:52 -0500
From: Anthony Liguori <anthony@codemonkey.ws>
MIME-Version: 1.0
Subject: Re: [Qemu-devel] [RFC] New device API
References: <200905051231.09759.paul@codesourcery.com>	<4A0083F5.7050606@codemonkey.ws>	<200905060152.02351.paul@codesourcery.com>
	<200905060204.32068.paul@codesourcery.com>
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To: Paul Brook <paul@codesourcery.com>
Cc: qemu-devel@nongnu.org

Paul Brook wrote:
> On Wednesday 06 May 2009, Paul Brook wrote:
>   
>>>> The attached patch is my attempt at a new internal API for device
>>>> creation in qemu.
>>>>         
>>> Instead of recreating constructors, I think we should just use GCC's
>>> constructor attribute.  This gives us ordering which will be important
>>> when dealing with buses.
>>>       
>> The reason I'm not using constructors is because you have to workaround
>> ordering issues. All constructors are run before main(), so there's a very
>> limited amount they can actually do, and constructor priorities are not
>> available on all hosts.
>>     
>
> Oh, the other thing is that constructors don't work when you put objects in a 
> static library.  You need am explicit dependency to pull in objects.
>   

Not if you enable -Wl,--whole-archive.  It ends up looking like:

gcc -o test-stub -g -Wall -O test-stub.c -Wl,--whole-archive libtest.a 
-Wl,--no-whole-archive -L.

And I've confirmed this works.

Regards,

Anthony Liguori

> Paul
>
>
>