[swift-dev] [RFC] Requiring CMake 3.4.3 by Prerequisite.

[Michael Gottesman]

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> On Jul 2, 2016, at 10:01 PM, Michael Gottesman <mgottesman at apple.com> wrote:
> 
> I am now flipping the switch to require the upgraded cmake.
> 
> Michael
> 
>> On Jun 30, 2016, at 3:24 PM, Michael Gottesman via swift-dev <swift-dev at swift.org <mailto:swift-dev at swift.org>> wrote:
>> 
>> Yes.
>> 
>>> On Jun 30, 2016, at 2:47 PM, Joseph Bell <joe at iachieved.it <mailto:joe at iachieved.it>> wrote:
>>> 
>>> Michael, as I mentioned earlier I upgraded my systems to 3.4.3 and resumed building Swift.  Regarding flipping the switch, I'm assuming you mean replacing
>>> 
>>> cmake_minimum_required(VERSION 2.8.12)
>>> 
>>> with 3.4.3 in all of the various CMakeLists.txt files?
>>> 
>>> Joe
>>> 
>>> 
>>> On Wed, Jun 29, 2016 at 12:13 PM, Michael Gottesman via swift-dev <swift-dev at swift.org <mailto:swift-dev at swift.org>> wrote:
>>> For a long time, we have been using CMake 2.8.*. This is an RFC to make it a pre-requisite to have cmake 3.4.3 matching LLVM.
>>> 
>>> The reason to do this is:
>>> 
>>> 1. It will make it easier to cherry-pick upstream llvm changes that may require CMake 3.4.3 features into Swift's cmake system.
>>> 2. It allows us to use LLVMConfig.cmake and ClangConfig.cmake to import the proper dependencies.
>>> 
>>> We especially want number 2 since it nips linker dependency issues on Linux that come up every couple of months in various forms.
>>> 
>>> If you have any questions/concerns/etc, please feel free to respond publicly on this thread or privately by sending me an offlist email.
>>> 
>>> Assuming that there is no further discussion, I would like to give a notice about the update sometime this weekend (flipping the switch next week). So please give me your feedback in a reasonable amount of time. = ).
>>> 
>>> Thanks,
>>> Michael
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>>> 
>>> 
>>> 
>>> -- 
>>> Joseph Bell
>>> http://dev.iachieved.it/iachievedit/ <http://dev.iachieved.it/iachievedit/>
>>> @iachievedit
>> 
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