[llvm-dev] Any details I should know before trying to build on OS X Snow Leopard (Darwin 10) ?

[Bruce Hoult via llvm-dev]

I'm not aware of any difficulty with an older OS such as 10.6.8 as such,
but there is a pretty fundamental thing that recent Clang/LLVM source code
uses features from C++11, which the existing compiler on a 10.6.8 machine
won't support.

Clang 3.4 supports C++11, but does not require it.
Clang 3.5 and later requires a C++11 compiler.

A quick internet search suggests that you can build Clang 3.4 with the
system compiler on 10.6.8.

Once you have a working Clang 3.4 you can build later Clang versions. I'm
not 100% sure whether 3.4 implements C++11 sufficiently bug free to compile
Clang 3.8.

You could also of course look at installing/building a more recent gcc to
build recent Clang with. Gcc 4.9 is the first version that does not label
C++11 support as experimental.

On Mon, Apr 4, 2016 at 1:11 AM, ardi via llvm-dev <llvm-dev at lists.llvm.org>
wrote:

> Hi,
>
> One of my Macs is kept at 10.6.8 (with Xcode 3.2.6) because it's a
> system I still wish to support. However, I'd like to move to clang on
> it, if possible. I prefer to either install a precompiled binary
> distribution (if it exists) or compile it on my own, but for the
> moment I'd prefer to avoid installing it through macports.
>
> Looking at the LLVM releases downloads page, I see several downloads
> tagged "Darwin", but it doesn't specify what Darwin version is
> required for it to run (some of them say "Darwin 10.9", but is it
> Darwin 10.9 or OS X 10.9? On very older releases (the gcc front-end
> ones) I see Darwin10 binaries.
>
> I suppose there won't be any relatively recent binary distribution
> that I can use on Snow Leopard, so I guess I've to build it myself. In
> that case, should the 3.8.0 build out of the box? If not, is there any
> not too old release that would build out of the box? (when I say "out
> of the box", I mean that it passes all tests, and no custom patches
> are necessary).
>
> Thanks a lot in advance,
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