[llvm-dev] Building SVN head with CMake - shared libraries?

[Yury Gribov via llvm-dev]

On 01/15/2016 12:01 AM, Joerg Sonnenberger via llvm-dev wrote:
> On Thu, Jan 14, 2016 at 11:31:55AM -0800, Chris Bieneman via llvm-dev wrote:
>>
>>> On Jan 14, 2016, at 11:22 AM, Mehdi Amini <mehdi.amini at apple.com> wrote:
>>>
>>>>
>>>> On Jan 14, 2016, at 9:38 AM, Chris Bieneman via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>>>>
>>>>
>>>>> On Jan 14, 2016, at 5:18 AM, Dan Liew <dan at su-root.co.uk> wrote:
>>>>>
>>>>> On 14 January 2016 at 11:24, David Jones via llvm-dev
>>>>> <llvm-dev at lists.llvm.org> wrote:
>>>>>> Thanks - I'll try this tonight.
>>>>>>
>>>>>> Assuming it works, should these variables be added to the docs at
>>>>>> http://llvm.org/docs/CMake.html ?
>>>>>
>>>>> Yes.
>>>>
>>>> It probably makes sense to add LLVM_BUILD_LLVM_DYLIB, but I would discourage adding BUILD_SHARED_LIBS to that document. BUILD_SHARED_LIBS is rarely what people actually want, and a lot of people gravitate to it because the wording is similar to the autoconf —enable-shared flag.
>>>
>>> Considering that BUILD_SHARED_LIBS is rarely what people want, wouldn’t it make sense to document it to explicitly discourage people from using it and avoid them surprising behavior?
>>
>> Honestly, I’m not sure *anyone* actually wants that behavior, and I’d kinda like to remove the option entirely.
>
> It is exactly what I want to have for debug builds. It means linking
> moderately chunked blocks of code together and can even parallelize that
> easily. I agree that it is not an end user option, but for developers it
> is helpful exactly as it is.

+100, this speeds up incremental link tremendously.

>
> Joerg
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