[3.15] gh-154070: Build the curses module wide by capability, not by name (GH-154071) - #154765
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serhiy-storchaka merged 2 commits intoJul 28, 2026
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…ot by name (pythonGH-154071) configure built the module wide (HAVE_NCURSESW) only for a library found under the name ncursesw. Probe for the wide API too, so a widec-built ncurses keeping the plain name (pkgsrc, macOS) is built wide. 3.15 has no --with-curses, so the probe is guarded on curses being found rather than on the selected backend. (cherry picked from commit 2db8ca7) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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July 27, 2026 11:25
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The wide-character probe ran inside a nested WITH_SAVE_ENV, whose single CPPFLAGS save slot is not reentrant, so the outer restore leaked $CURSES_CFLAGS and $PANEL_CFLAGS (-D_XOPEN_SOURCE=600) into CONFIGURE_CPPFLAGS and thus into every translation unit, producing a '_XOPEN_SOURCE' redefined warning against pyconfig.h on every file. Save and restore CPPFLAGS with a dedicated variable around the probe, as on the main branch.
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🤖 New build scheduled with the buildbot fleet by @serhiy-storchaka for commit 603c80f 🤖 Results will be shown at: https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F154765%2Fmerge If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again. |
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Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14. |
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Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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GH-154799 is a backport of this pull request to the 3.14 branch. |
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GH-154800 is a backport of this pull request to the 3.13 branch. |
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…name (GH-154071) (GH-154765) (GH-154799) configure built the module wide (HAVE_NCURSESW) only for a library found under the name ncursesw. Probe for the wide API too, so a widec-built ncurses keeping the plain name (pkgsrc, macOS) is built wide. (cherry picked from commit 2db8ca7) (cherry picked from commit 383c7bd) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Backport of GH-154071 to 3.15.
configurebuilt the module wide (HAVE_NCURSESW) only for a library found under the namencursesw. Probe for the wide API too, so a widec-built ncurses keeping the plain name (pkgsrc, macOS) is built wide.Not a clean cherry-pick: 3.15 has no
--with-curses(GH-153992 is main-only), so the probe is guarded onhave_cursesrather than on the selected backend, and it usesWITH_SAVE_ENVinstead of savingCPPFLAGSby hand -- on 3.15 the outerWITH_SAVE_ENVhas already closed at that point.