https://github.com/python/cpython/commit/4fa5c0428213f9b80a2b3e25e49b52e8596d8528
commit: 4fa5c0428213f9b80a2b3e25e49b52e8596d8528
branch: main
author: Diego Russo <[email protected]>
committer: diegorusso <[email protected]>
date: 2026-05-05T16:20:12+01:00
summary:
gh-149353: Preserve JIT shim object during PGO clean (#149387)
files:
A Misc/NEWS.d/next/Build/2026-05-04-23-07-45.gh-issue-149353.XfM8aQ.rst
M Makefile.pre.in
diff --git a/Makefile.pre.in b/Makefile.pre.in
index fe16c73204dcf8..dce0139d8d6e35 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -3330,7 +3330,9 @@ docclean:
# data. The PGO data is only valid if source code remains unchanged.
.PHONY: clean-retain-profile
clean-retain-profile: pycremoval
- find . -name '*.[oa]' -exec rm -f {} ';'
+ # Keep the generated JIT shim objects with the rest of the JIT generated
+ # files: they are regenerated as a group and tracked by .jit-stamp.
+ find . -name '*.[oa]' ! -name 'jit_shim*.o' -exec rm -f {} ';'
find . -name '*.s[ol]' -exec rm -f {} ';'
find . -name '*.so.[0-9]*.[0-9]*' -exec rm -f {} ';'
find . -name '*.lto' -exec rm -f {} ';'
diff --git
a/Misc/NEWS.d/next/Build/2026-05-04-23-07-45.gh-issue-149353.XfM8aQ.rst
b/Misc/NEWS.d/next/Build/2026-05-04-23-07-45.gh-issue-149353.XfM8aQ.rst
new file mode 100644
index 00000000000000..3a3bad2906f783
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2026-05-04-23-07-45.gh-issue-149353.XfM8aQ.rst
@@ -0,0 +1,2 @@
+Avoid unnecessary JIT-related rebuilds during ``make install`` after
+``--enable-optimizations`` builds.
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