[llvm-dev] metabug tracking blockers for the cmake transition

[Chris Bieneman via llvm-dev]

Jeremy,

At this point the belief is that there are no issues left blocking removing autoconf. The plan is to remove it after the 3.8 branch. In case you missed the thread where that was decided it is here (http://lists.llvm.org/pipermail/llvm-dev/2015-November/092150.html <http://lists.llvm.org/pipermail/llvm-dev/2015-November/092150.html>). This discussion has been going on for over a year, so it shouldn’t be a surprise.

I see the issues you reported, I don’t consider any of them to be blocking because they can all be worked around. That doesn’t mean I don’t think we should fix them (because we should), it just means I don’t think they warrant any changes in our plans to remove autoconf support.

The two main issues you’re being impacted by are 25664 and 25665.

I suspect that you are hitting 25664 because you’re setting LLVM_ENABLE_SHARED=On, which probably doesn’t do what you think it does. There was no equivalent of that flag in autoconf. The autoconf —enable-shared option maps to LLVM_BUILD_LLVM_DYLIB=On in CMake.

For 25665, we will need to add an option to skip generating targets for libcxx’s library. I can work that up today or tomorrow.

Also, make sure you are setting LLVM_BUILD_EXTERNAL_COMPILER_RT=On. If you don’t set that you’re not building libclang_rt with the just-built compiler.

If you have other questions please let me know. I can also share our internal packaging scripts with you off-list if you'd like. I don’t think there is anything really secret in them, they’re just not useful to the wider LLVM community so they aren’t in-tree.

-Chris

> On Nov 29, 2015, at 12:56 AM, Anton Korobeynikov via llvm-dev <llvm-dev at lists.llvm.org> wrote:
> 
>> I don't think this information has all been entered in to bugzilla,
>> but a tracking bug could make sense if it doesn't already exist.
> See PR15732
> 
> -- 
> With best regards, Anton Korobeynikov
> Faculty of Mathematics and Mechanics, Saint Petersburg State University
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