[3.15] gh-126877: Fix the configure check for Tcl/Tk with optimizing compilers (GH-153543)#153553
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serhiy-storchaka merged 1 commit intoJul 11, 2026
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…ompilers (pythonGH-153543) The check assigned the addresses of Tcl_Init() and Tk_Init() to unused variables, which optimizing compilers can eliminate, so it linked even when the libraries were missing. Call the functions instead. (cherry picked from commit ff0a9ae269fa38c21f01bdea1a7ff5d439c4f681) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
This was referenced Jul 11, 2026
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The check assigned the addresses of Tcl_Init() and Tk_Init() to unused
variables, which optimizing compilers can eliminate, so it linked even
when the libraries were missing. Call the functions instead.
(cherry picked from commit ff0a9ae)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com
Co-authored-by: Claude Opus 4.8 noreply@anthropic.com