Description

tiran

opened on Jun 4, 2022

Issue body actions

Feature or enhancement

PEP 11 now defines support tiers based on CPU arch, platform, libc, and compiler. I propose to check the support level in configure and report it to the user. It is trivial to check the platform with a case block. The compiler name can be detect by builtin macro names like __clang__.

A message at build time makes support tier more obvious to the user. It might even nudge some vendors to contribute fixes and build bots.

Example:

checking for PEP 11 support tier... x86_64-pc-linux-gnu/gcc has tier 1 (supported)

checking for PEP 11 support tier... wasm32-unknown-emscripten/clang is not supported
...
configure: creating Modules/Setup.local
configure: creating Makefile
configure:

If you want a release build with all stable optimizations active (PGO, etc),
please run ./configure --enable-optimizations

configure:

Platform "wasm32-unknown-emscripten" with compiler "clang" is not supported by
CPython core team, see https://peps.python.org/pep-0011/ for more information.

Activity

1. tiran

   added

   type-featureA feature request or enhancementA feature request or enhancement

   buildThe build process and cross-buildThe build process and cross-build

   3.11only security fixesonly security fixes

   3.12only security fixesonly security fixes

   on Jun 4, 2022
2. tiran

   assigned

   brettcannon

   on Jun 4, 2022
3. erlend-aasland

   linked a pull request that will close this issuegh-93491: Add support tier detection to configure (GH-93492) #93492on Jun 10, 2022
4. tiran

   closed this as completedin #93492on Jun 10, 2022
5. miss-islington

   added a commit that references this issue on Jun 10, 2022

   pythongh-93491: Add support tier detection to configure (pythonGH-93492)

   a739db0
6. tiran

   added a commit that references this issue on Jun 10, 2022

   gh-93491: Add support tier detection to configure (GH-93492)

   3124d9a
7. miss-islington

   added a commit that references this issue on Jun 10, 2022

   gh-93491: Add support tier detection to configure (GH-93492)

   516d90e
8. serhiy-storchaka

   added a commit that references this issue on Jun 26, 2022

   Revert 30935 defer bpo45162 to 312 (#94285)

   1ffde3e
9. tiran

   added 2 commits that reference this issue on Jun 30, 2022

   pythongh-93491: Fix PEP 11 tier detection for FreeBSD

   f9e9505

   gh-93491: Fix PEP 11 tier detection for FreeBSD (GH-94441)

   67d208f
10. miss-islington

    added 2 commits that reference this issue on Jun 30, 2022

    pythongh-93491: Fix PEP 11 tier detection for FreeBSD (pythonGH-94441)

    2698fee

    gh-93491: Fix PEP 11 tier detection for FreeBSD (GH-94441)

    8ee4e12
11. gvanrossum

    added a commit that references this issue on Jun 30, 2022

    pythongh-93491: Fix PEP 11 tier detection for FreeBSD (pythonGH-94441)

    9eb94f3

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