From: Diego Russo <diego.russo@arm.com>
Date: Tue, 5 May 2026 15:20:12 +0000 (+0100)
Subject: gh-149353: Preserve JIT shim object during PGO clean (#149387)
X-Git-Tag: v3.15.0b1~35
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4fa5c0428213f9b80a2b3e25e49b52e8596d8528;p=thirdparty%2FPython%2Fcpython.git

gh-149353: Preserve JIT shim object during PGO clean (#149387)
---

diff --git a/Makefile.pre.in b/Makefile.pre.in
index fe16c73204dc..dce0139d8d6e 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 000000000000..3a3bad2906f7
--- /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.