[llvm-dev] Mac downloads at http://releases.llvm.org/download.html recently requiring latest MacOS

Wed May 2 16:27:20 PDT 2018

How is -mmacosx-version-min=10.9 being set? LLVM_COMPILE_FLAGS? Or CMAKE_CXX_COMPILE?

> On May 2, 2018, at 19:22, Vedant Kumar via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
> I described this off-list to Zac, but for anyone else who is following, simply specifying the target triple is not enough to have the build system set an older macOS deployment target. I.e the 6.0.0-rc1 binaries I've just uploaded have the same deployment target problem.
> 
> Looking at the 5.0.0 and 6.0.0-rc1 binaries, I can confirm that their deployment target was too new:
> 
> Load command 9
>     cmd LC_VERSION_MIN_MACOSX
> cmdsize 16
> version 10.12
>     sdk 10.13
> 
> I'm not sure why this is happening, because the build logs are peppered with instances of -mmacosx-version-min=10.9.
> 
> At any rate, it looks like we currently lack support for inferring an older deployment target based on the triple passed to test-release.sh. It would be great to have a patch for this. For now, I'll try manually specifying extra cflags when I run the script.
> 
> vedant
> 
>> On May 2, 2018, at 12:59 PM, Vedant Kumar via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>> 
>> Hi Zac,
>> 
>> Thanks for the heads-up. I've started targeting a minimum macOS deployment target of 10.9 for the release binaries.
>> 
>> Hope this helps. Let me know if there are any issues.
>> 
>> vedant
>> 
>>> On May 1, 2018, at 4:13 PM, Zac Hansen via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>>> 
>>> The past few packages on http://releases.llvm.org/download.html for mac have required the latest version of mac os.  Previously they were built for 10.5 (I believe).
>>> 
>>> I was just wondering if there is a technical reason for this change in requirements and if not, if it could be revered.  I have systems I actively use which are 10.10 and 10.11 and it would be awesome if I didn't have to build new releases, as it takes quite a while on my older hardware.
>>> 
>>> Thank you.
>>> 
>>> P.S.  If anyone needs to build a release for themselves, I believe the process is:
>>> 
>>> clone LLVM from github - https://github.com/llvm-mirror/llvm
>>> 
>>> get target OS darwin version from here: https://en.wikipedia.org/wiki/Darwin_(operating_system) - in the example below I'm building for 14.5.0
>>> 
>>> llvm/utils/release/test-release.sh -release 6.0.0 -final -triple x86_64-apple-darwin14.5.0
>>> 
>>> results in: llvm/utils/release/final/clang+llvm-6.0.0-x86_64-apple-darwin14.5.0.tar.xz
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>> 
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
> 
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev