<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Jan 7, 2014 at 5:09 PM, Nico Weber <span dir="ltr"><<a href="mailto:thakis@chromium.org" target="_blank">thakis@chromium.org</a>></span> wrote:<br>
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<div class="im">On Tue, Jan 7, 2014 at 1:44 AM, Chandler Carruth <span dir="ltr"><<a href="mailto:chandlerc@gmail.com" target="_blank">chandlerc@gmail.com</a>></span> wrote:<br>
</div><div class="im"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Greetings, I'm trying CC-ing all the folks I could think of that are likely running bots for Clang. If I've missed any, sorry, please add them.<div>
<br></div><div>As you may have heard on various lists, it's time to switch Clang (and LLVM) to use C++11. The first step is establishing a new baseline of compiler versions that are supported[1]:</div>
<div><br></div><div>MSVC 2012</div><div>GCC 4.7</div></div></blockquote><div><br></div></div><div>Does this mean clang with require libstdc++4.7 too? Or can gcc 4.7 target libstdc++ 4.6 somehow?</div></div></div></div></blockquote>
<div><br></div><div>^ ping<br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">
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<div dir="ltr"><div>Clang 3.1</div></div></blockquote><div><br></div><div>Is libc++ going to be a requirement on OS X (i.e. clang 3.5+ won't run on OS X versions older than 10.7), or will using the newest libstdc++ available on OS X (4.2) be ok too?</div>
</div></div></div></blockquote><div><br></div><div>^ ping</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div class="im"><div dir="ltr"><div><br></div>
<div>If you are helping to keep our build bot infrastructure running and up-to-date, please check the host compiler versions and reply here if you're going to have trouble upgrading. My rough plan based on chatting with some folks is to submit checks to cmake and configure on Monday to produce an error on older toolchains without some flag to force old toolchain support.</div>
<div><br></div><div>So reply to this thread if you need more time, or if all your bots are ready-to-go! Thanks a bunch!</div><div>-Chandler</div><div><br></div><div><br></div><div>[1]: Most of these compilers were available in the middle (June) of 2012, and based on the planned 3.5 release time frame of the middle of 2014, that will mean a roughly two year spread of compiler releases. MSVC 2012 was later, but the community seems comfortable with requiring the upgrade. Also, these versions include very significant improvements that make adopting C++11 features much more viable. This was discussed at some length on the mailing list previously, and I'm not really trying to re-open debate here, just reminding folks. =]</div>
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