[Interest] building Qt 4.8.7 with gcc 5 and link-time optimisation on Linux

Thiago Macieira thiago.macieira at intel.com
Thu Jul 23 22:11:03 CEST 2015

On Thursday 23 July 2015 20:35:48 René J. V. Bertin wrote:
> Thiago Macieira wrote:
> > So this is a compiler bug.
> > 
> > Sorry, please try GCC.
> On OS X?!

If you want the feature, either switch compilers or fix the bug in this 
compiler. The only other option is to stop using the feature.

You'll need to test with upstream Clang 3.7 and 3.8 to verify whether the 
issue is fixed. Apple's "random point in the release cycle plus random set of 
patches" Clang is not a good testbed for reporting compiler failures.

I will not take a patch that disables CRC32 due to a compiler bug in an 
unsupported configuration (LTO), especially if it's already fixed in the latest 

And I will be adding more of those.
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center

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