[llvm] r202486 - [docs] Add a big section with details about how to go about acquiring

[Hal Finkel]

----- Original Message -----
> From: "Chandler Carruth" <chandlerc at gmail.com>
> To: "Hal Finkel" <hfinkel at anl.gov>
> Cc: "Chandler Carruth" <chandlerc at gmail.com>, "Commit Messages and Patches for LLVM" <llvm-commits at cs.uiuc.edu>
> Sent: Tuesday, March 4, 2014 2:54:10 PM
> Subject: Re: [llvm] r202486 - [docs] Add a big section with details about how to go about acquiring
> 
> 
> 
> 
> 
> On Tue, Mar 4, 2014 at 12:43 PM, Hal Finkel < hfinkel at anl.gov >
> wrote:
> 
> 
> 
> ----- Original Message -----
> > From: "Chandler Carruth" < chandlerc at gmail.com >
> > To: llvm-commits at cs.uiuc.edu
> > Sent: Friday , February 28, 2014 4:56:58 AM
> > Subject: [llvm] r202486 - [docs] Add a big section with details
> > about how to go about acquiring
> > 
> > Author: chandlerc
> > Date: Fri Feb 28 04:56:57 2014
> > New Revision: 202486
> > 
> > URL: http://llvm.org/viewvc/llvm-project?rev=202486&view=rev
> > Log:
> > [docs] Add a big section with details about how to go about
> > acquiring
> > a more modern host C++ toolchain for Linux distros where folks
> > sometimes
> > don't have a good option to get one as part of their system.
> > 
> > This is a first cut, so feedback, testing, and suggestions are
> > very,
> > very welcom. This is one of the last real documentation changes
> > that
> > was
> > specifically requested prior to switching LLVM and Clang to build
> > in
> > C++11 mode by default.
> 
> Why are we advocating downloading gcc 4.8.2 to build Clang/LLVM?
> Should we not first suggest downloading Clang/LLVM 3.4?
> 
> Because Clang/LLVM 3.4 don't provide an installed-out-of-the-box well
> tested standard library implementation for Linux, and as mentioned
> at the start of the comment section, this is largely a Linux
> section.

So the issue is just that libc++'s build system is wacky? I've never built libc++ with cmake -- preferring instead my patched version of the 'buildit' script ;) -- , but is the cmake setup from 3.4 usable? Or is testing on Linux the major issue?

 -Hal

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory