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[Manta] Re: Re: Re: sincos


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  • From: Thiago Ize < >
  • To:
  • Subject: [Manta] Re: Re: Re: sincos
  • Date: Mon, 06 Apr 2009 10:58:46 -0600
_GNU_SOURCE should not be defined on macs, which is why I did not include the __APPLE__ guard. However, after greping the code, I see a
   Core/Thread/Thread_pthreads.cc:#  define _GNU_SOURCE
I guess if that file gets compiled before the the Trig.h file we get the problem. When I compile manta on my mac, when Trig.h gets compiled _GNU_SOURCE is not yet defined which is why it worked for me.

So either we need to undefine _GNU_SOURCE after using it in Thread_pthreads.cc or we need to place extra guards in Trig.h. Extra guards in Trig.h though is a bit of a hack and won't work on all systems (non-apple systems that shouldn't have _GNU_SOURCE defined or future apple systems that can use it)

Anyone have any preferences for which fix to use?

Thiago

Solomon Boulos wrote:
" type="cite">
I updated and built recently (whenever I sent out mail about Apple's broken update to libfreetype).

What compiler are you using? If gcc, what does gcc --version spit out? If icc, they play weird games with pretending to be GCC-like, and perhaps this is a pitfall?

Solomon 

On Apr 6, 2009, at 8:37 AM, James Bigler < "> > wrote:

Has this recently changed.  I've compiled Manta a few months ago on my Mac (10.5).  Could this be a 10.4 issue?

James

On Mon, Apr 6, 2009 at 2:11 AM, Carson Brownlee < "> > wrote:
I've noticed that sincos in Core/Math/Trig.h breaks under my Mac laptop.  As I understand it _GNU_SOURCE should make math.h include sincos which seems to work fine on various linux machines I have used.  Is this a problem across all macs and a simple !(__APPLE__) will fix this or is this specific to my laptop?
Carson



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