[PATCH] D156286: [docs] Bump minimum GCC version to 7.5

Mon Jul 31 06:06:06 PDT 2023

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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https://reviews.llvm.org/D156286