[cfe-dev] clang + compiler-rt aren't buildable on OS X since r157062; how to proceed?

[Nico Weber]

Hi Daniel,

On Thu, May 31, 2012 at 4:50 PM, Nico Weber <thakis at chromium.org> wrote:
> Cool. Could you work with someone who understands the compiler-rt
> build to make that happen and unbreak the build?
>
> (I gave it a shot myself, but I'm not sure what the best way to go
> about things is. Maybe add a "platform = Darwin and $2 = ios then
> return" to compiler-rt/make/platform/clang_darwin.mk's CheckArches?)

^ does this sound like the right way to go?

Nico

>
> Nico
>
> On Thu, May 31, 2012 at 2:44 PM, Jim Grosbach <grosbach at apple.com> wrote:
>> #3.
>>
>> On May 31, 2012, at 2:43 PM, Nico Weber <thakis at chromium.org> wrote:
>>
>>> Hi,
>>>
>>> r157062 broke bootstrap builds of clang if compiler-rt is built too.
>>> See http://llvm.org/PR12918 for details, in short: r157062 lets clang
>>> output a load command for iOS targets that the ar binary in all
>>> released Xcode versions doesn't understand. compiler-rt is built for
>>> mac and ios when compiling on OS X by default.
>>>
>>> As a result, I haven't been able to push a new clang to the chromium
>>> repo in a while. What's the way forward here?
>>>
>>> 1.) Make a prerelease ar a requirement for doing bootstrap builds for
>>> building clang and compiler-rt
>>>
>>> 2.) Augment r157062 to only use new load commands if target platforms
>>> are new enough
>>>
>>> 3.) Remove ios from the default compiler-rt build
>>>
>>> 4.) Something else
>>>
>>>
>>> I'm not able to push new clang binaries to chromium until this is resolved.
>>>
>>> Thanks,
>>> Nico
>>