From: Joshua Root <jmr@macports.org>
Date: Wed, 11 Feb 2026 04:27:16 +0000 (+1100)
Subject: gh-140421: Disable perf trampoline on older macOS (#144647)
X-Git-Tag: v3.15.0a6~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d5f96c86653de4dc8c5074ab0bf3027d0a3c1878;p=thirdparty%2FPython%2Fcpython.git

gh-140421: Disable perf trampoline on older macOS (#144647)

Trampoline requires clock_gettime() which was added in macOS 10.12.
---

diff --git a/Misc/NEWS.d/next/Build/2026-02-10-06-31-29.gh-issue-140421.vxosUx.rst b/Misc/NEWS.d/next/Build/2026-02-10-06-31-29.gh-issue-140421.vxosUx.rst
new file mode 100644
index 000000000000..cab48f105cc5
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2026-02-10-06-31-29.gh-issue-140421.vxosUx.rst
@@ -0,0 +1 @@
+Disable the perf trampoline on older macOS versions where it cannot be built.
diff --git a/configure b/configure
index cd8983683333..73a758384553 100755
--- a/configure
+++ b/configure
@@ -13873,7 +13873,13 @@ case $PLATFORM_TRIPLET in #(
   aarch64-linux-gnu) :
     perf_trampoline=yes ;; #(
   darwin) :
-    perf_trampoline=yes ;; #(
+    case $MACOSX_DEPLOYMENT_TARGET in #(
+  10.[0-9]|10.1[0-1]) :
+    perf_trampoline=no ;; #(
+  *) :
+    perf_trampoline=yes
+             ;;
+esac ;; #(
   *) :
     perf_trampoline=no
  ;;
diff --git a/configure.ac b/configure.ac
index e9b45d459fee..2ba63b2a8a05 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3717,7 +3717,10 @@ AC_MSG_CHECKING([perf trampoline])
 AS_CASE([$PLATFORM_TRIPLET],
   [x86_64-linux-gnu], [perf_trampoline=yes],
   [aarch64-linux-gnu], [perf_trampoline=yes],
-  [darwin], [perf_trampoline=yes],
+  [darwin], [AS_CASE([$MACOSX_DEPLOYMENT_TARGET],
+                [[10.[0-9]|10.1[0-1]]], [perf_trampoline=no],
+                [perf_trampoline=yes]
+            )],
   [perf_trampoline=no]
 )
 AC_MSG_RESULT([$perf_trampoline])