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Re: Using libtool via autotools causes linking problem on mingw


From: Peter Rosin
Subject: Re: Using libtool via autotools causes linking problem on mingw
Date: Fri, 08 Nov 2013 15:22:42 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.0.1

On 2013-11-08 14:15, Peter Rosin wrote:
> On 2013-11-08 12:18, Panicz Maciej Godek wrote:
>> 2013/11/8 Peter Rosin <address@hidden <mailto:address@hidden>>
>>
>>     The SDL library, for some obscure reason, has its own special take on 
>> that and
>>     prescribes that you should keep using main() even if you are doing a GUI 
>> app.
>>     I think the SDLmain library contains the real address@hidden entry point 
>> and that
>>     entry point in turn calls the application main function. Or I should 
>> perhaps
>>     say SDL_main (see that -Dmain=SDL_main define above). Some part of this
>>     fragile SDL crap fails. I don't know what.
>>
>>     Perhaps the SDL_main library was compiled to expect an ordinary main 
>> entry
>>     point instead of the GUI address@hidden version?
>>
>>     Just to be clear, I'm not an SDL user. This is just my understanding of 
>> this.
>>     The above description might very well be flawed in some way, but SDL
>>     initialization is peculiar.
>>
>>
>> I can later try to add some of the options from the libtool invocation 
>> generated
>> by autoconf to my invocation of gcc to see which particular option causes the
>> failure and then let you know. I think that your description of the way SDL 
>> does
>> things on mingw is sound (and I think that the goal is to ensure 
>> portability, as
>> unix programmers have no idea what the WinMain is)
> 
> Hmmm, I have this hunch that the -nostdlib option that libtool adds to the
> g++ invocation beats -mwindows, just like it beats -pthread. But I don't
> know that for a fact...

No, wait. You're not building a library, so -nostdlib isn't relevant...

Sorry for the wasted bandwidth.

Cheers,
Peter




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