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gh-132257: Remove -flto-partition=none for Linux LTO builds #132258

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Merged
merged 10 commits into from
Apr 11, 2025
Merged

gh-132257: Remove -flto-partition=none for Linux LTO builds #132258

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8891cd2
Remove -flto-partition=none for Linux LTO builds
Fidget-Spinner Apr 7, 2025
23568cd
📜🤖 Added by blurb_it.
blurb-it[bot] Apr 8, 2025
09205a0
Support older compilers
Fidget-Spinner Apr 8, 2025
eedba32
Address review
Fidget-Spinner Apr 9, 2025
c7f4cc4
Pass jobserver env to all commands
Fidget-Spinner Apr 10, 2025
9e013cf
autoconf regen
Fidget-Spinner Apr 10, 2025
6257b0e
Revert "Pass jobserver env to all commands"
Fidget-Spinner Apr 10, 2025
e438b4c
Revert most of the + to the bare minimum
Fidget-Spinner Apr 10, 2025
61c8e33
Remove the +
Fidget-Spinner Apr 10, 2025
3628388
Update 2025-04-08-09-11-32.gh-issue-132257.oZWBV-.rst
Fidget-Spinner Apr 10, 2025
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Build/2025-04-08-09-11-32.gh-issue-132257.oZWBV-.rst
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@@ -0,0 +1 @@
Change the default LTO flags on GCC to not pass ``-flto-partition=none``, and allow parallelization of LTO. For newer GNU makes and GCC, this has a multiple factor speedup for LTO build times, with no noticeable loss in performance.
2 changes: 1 addition & 1 deletion configure
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2 changes: 1 addition & 1 deletion configure.ac
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Expand Up @@ -2031,7 +2031,7 @@ if test "$Py_LTO" = 'true' ; then
LTOCFLAGS="-flto"
;;
*)
LTOFLAGS="-flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none"
LTOFLAGS="-flto -fuse-linker-plugin -ffat-lto-objects"
;;
esac
;;
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