[Development] Clarification on Mac 10.6 support for Qt 5.2

Thiago Macieira thiago.macieira at intel.com
Wed Jun 5 19:45:43 CEST 2013

On quarta-feira, 5 de junho de 2013 15.49.53, Tor Arne Vestbø wrote:
> On 6/5/13 12:49 , Gustavsen Richard wrote:
> >> From reading this thread, it seems that 10.6 support is pretty
> >> important. But right now you need to build Qt from sources yourself
> >> to get it.
> > 
> > Is this good enough? It sounds like it would be better if the binary
> > package continued with 10.6 support when so many users still has that
> > version. Those that need C++11 and don't need to target 10.6 could
> > still build Qt themselves (rather than the opposite)...
> I agree that the SDK should perhaps span to include 10.6 deployment support.
> Technically that's up to the people building the binary SDK packages, if
> they configure with -no-c++11 or not. Qt's configure will by default
> detect if it's supported, and adjusts the deployment target accordingly.

Since changing to libc++ could be a binary incompatible change[*], we should 
probably stick to libstdc++ for now and disable C++11 in Qt's build for OS X. 
Since we're right now building with GCC 4.2, no C++11 is in use in those 
builds anyway, so there's no loss. And there will probably be a gain, by 
upgrading the compiler.

[*] it does not affect Qt's ABI, but it might affect other libraries that the 
user is compiling against.

Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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