[3.12] gh-113565: Improve and harden detection of curses dependencies (#119816) #121222
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…encies (python#119816) (cherry picked from commit f80376b) 1. Use pkg-config to check for ncursesw/panelw. If that fails, use pkg-config to check for ncurses/panel. 2. Regardless of pkg-config output, search for curses/panel headers, so we're sure we have all defines in pyconfig.h. 3. Regardless of pkg-config output, check if libncurses or libncursesw contains the 'initscr' symbol; if it does _and_ pkg-config failed earlier, add the resulting -llib linker option to CURSES_LIBS. Ditto for 'update_panels' and PANEL_LIBS. 4. Wrap the rest of the checks with WITH_SAVE_ENV and make sure we're using updated LIBS and CPPFLAGS for those. Add the PY_CHECK_CURSES convenience macro.
This was referenced Jul 1, 2024
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Marked as DO-NOT-MERGE and left to @Yhg1s to decide. See #119816 (comment). |
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See also the 3.12 bug report: |
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It's difficult, but I think this is too invasive for 3.12. It's too easy for this to break other systems doing automated/scripted builds, both because of the autoconf changes and the differences in which defines are used. We don't want to play use-case-whackamole where we keep breaking one system in our attempts to fix another. |
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(cherry picked from commit f80376b)
pkg-config to check for ncurses/panel.
we're sure we have all defines in pyconfig.h.
contains the 'initscr' symbol; if it does and pkg-config failed
earlier, add the resulting -llib linker option to CURSES_LIBS.
Ditto for 'update_panels' and PANEL_LIBS.
using updated LIBS and CPPFLAGS for those.
Add the PY_CHECK_CURSES convenience macro.