aaron.ballman added a comment.

In D156286#4544631 <https://reviews.llvm.org/D156286#4544631>, @MaskRay wrote:

> In D156286#4534968 <https://reviews.llvm.org/D156286#4534968>, @aaron.ballman 
> wrote:
>
>> There's a mention on the RFC thread that Ubuntu 18.04 still ships with GCC 
>> 7.3. That's an LTS release but it EOLed just last month, so it's not clear 
>> how disruptive this would be. (To be clear, I'm not saying I'm opposed to 
>> the changes.)
>
> The entire 16.x releases `LLVMAnalysis` cannot be built with GCC 7.3, so this 
> CMake change shouldn't be a larger disruption to any GCC <= 7.3 user.
> And we should get the GCC bump patch into 17.x so that users will not get 
> confused by the supportness.
>
> The question is whether we bump to 7.4 or 7.5. I'd prefer 7.5, as there 
> appears to be more users on 7.5 and can verify that 7.5 works reliably.
>
> There is a user who prefers 7.4 but 7.5 works for them.
> https://discourse.llvm.org/t/require-gcc-7-5-as-gcc-7-3-cannot-build-llvm-16-x-or-main/72310/29
>  says that Ubuntu 18.04 (End of Standard Support in June 2023) gets GCC 7.5 
> updates.

Okay, it sounds like the changes won't be particularly disruptive then, so this 
is reasonable to me. Thank you!



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Comment at: llvm/docs/GettingStarted.rst:284-298
 `python <http://www.python.org/>`_                          >=3.6        
Automated test suite\ :sup:`2`
 `zlib <http://zlib.net>`_                                   >=1.2.3.4    
Compression library\ :sup:`3`
 `GNU Make <http://savannah.gnu.org/projects/make>`_         3.79, 3.79.1 
Makefile/build processor\ :sup:`4`
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 .. note::
 
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Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156286/new/

https://reviews.llvm.org/D156286

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