From f6b3ba5f55d62941b4aaf5a252b9caa3e643bf4d Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 4 Nov 2025 19:12:30 -0500
Subject: [PATCH] CMP0198: Maintain CMAKE_PARENT_LIST_FILE only when
 configuring projects

Revise commit 41aea12941 (Do not define CMAKE_PARENT_LIST_FILE in
CMakeLists.txt, 2025-07-05, v4.2.0-rc1~505^2).
---
 Source/cmMakefile.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 0a5dd19d71..c3410bf752 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -4120,7 +4120,9 @@ bool cmMakefile::SetPolicy(cmPolicies::PolicyID id,
   this->StateSnapshot.SetPolicy(id, status);
 
   // Handle CMAKE_PARENT_LIST_FILE for CMP0198 policy changes
-  if (id == cmPolicies::CMP0198) {
+  if (id == cmPolicies::CMP0198 &&
+      this->GetCMakeInstance()->GetState()->GetRole() ==
+        cmState::Role::Project) {
     this->UpdateParentListFileVariable();
   }