[3.13] gh-130834: Fix free-threaded build with JIT for aarch64 linux (#132368)

corona10 · web-flow · commit 793293dcb944 · 2025-04-11T06:52:46.000-07:00
* [3.13] gh-130834: Fix free-threaded build with JIT for arm * lint
diff --git a/Tools/jit/_targets.py b/Tools/jit/_targets.py
@@ -525,7 +525,12 @@ def get_target(host: str) -> _COFF | _ELF | _MachO:
         args = ["-fms-runtime-lib=dll"]
         target = _COFF(host, alignment=8, args=args)
     elif re.fullmatch(r"aarch64-.*-linux-gnu", host):
-        args = ["-fpic"]
+        args = [
+            "-fpic",
+            # On aarch64 Linux, intrinsics were being emitted and this flag
+            # was required to disable them.
+            "-mno-outline-atomics",
+        ]
         target = _ELF(host, alignment=8, args=args)
     elif re.fullmatch(r"i686-pc-windows-msvc", host):
         args = ["-DPy_NO_ENABLE_SHARED"]
