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

[Nico Weber]

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?)

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
>