[Mesa-dev] Mesa (master): configs: Add -lstdc++ to default.

[Chia-I Wu]

On Thu, Sep 16, 2010 at 11:11 AM, Gregory Prisament
<greg at lycheesoftware.com> wrote:
> Hi,
> I just ran into a situation where GLES2 context creation was failing.
> Upon digging into it, I found that dlopen of st_GLESv2.so was failing
> with "undefined symbol: __cxa_pure_virtual".
>
> I found this thread, and realized that if I use g++ to compile my app,
> it works.  However, if I use gcc it does not (for the reason above).
>
> It'd be nice if C programs could work with Mesa's GLES2 without being
> compiled as C++.  I'm not sure how to fix it so that both gcc and g++
> work.  Maybe someone with a better understanding of what's going on
> could chime in?
>
> For now using g++ is a fine work-around.
Does the attached patch help?  It changes targets/egl to use C++
compiler to link the state trackers.
> -Greg Prisament, Lychee Software
>
> ps: I tried reverting the patch above to see if it would help, but
> dlopen still fails, this time with: "undefined symbol:
> _ZTVN10__cxxabiv120__si_class_type_info"
>
> On Tue, Aug 24, 2010 at 11:45 AM, Brian Paul <brianp at vmware.com> wrote:
>> On 08/24/2010 12:17 PM, Vinson Lee wrote:
>>>>
>>>> -----Original Message-----
>>>>
>>>> I missed this message/commit while I was away.
>>>>
>>>> The attached patch is how I would fix this problem.
>>>>
>>>> Vinson, can you try reverting your patch and trying this change?
>>>>
>>>> There may be other Makefiles where this change might be needed.
>>>>
>>>
>>> I'm tried reverting and applying the attached patch locally. glxinfo and
>>> glxgears work on both swrast and softpipe.
>>> .
>>
>> OK, go ahead and commit those changes then.
>>
>> -Brian
>>
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-- 
olv at LunarG.com
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