CMP0011: Remove support for OLD behavior

Help/policy/CMP0011.rst

@@ -1,6 +1,9 @@
 CMP0011
 -------
 
+.. |REMOVED_IN_CMAKE_VERSION| replace:: 4.0
+.. include:: REMOVED_PROLOGUE.txt
+
 Included scripts do automatic :command:`cmake_policy` PUSH and POP.
 
 In CMake 2.6.2 and below, CMake Policy settings in scripts loaded by
@@ -19,7 +22,5 @@ The ``NEW`` behavior for this policy is to allow the commands to do
 their default cmake_policy ``PUSH`` and ``POP``.
 
 .. |INTRODUCED_IN_CMAKE_VERSION| replace:: 2.6.3
-.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
-.. include:: STANDARD_ADVICE.txt
-
-.. include:: DEPRECATED.txt
+.. |WARNED_OR_DID_NOT_WARN| replace:: warned
+.. include:: REMOVED_EPILOGUE.txt

Source/cmFindPackageCommand.cxx

@@ -2789,8 +2789,8 @@ bool cmFindPackageCommand::CheckVersionFile(std::string const& version_file,
                                   this->VersionRangeMax);
   }
 
-  // Load the version check file.  Pass NoPolicyScope because we do
-  // our own policy push/pop independent of CMP0011.
+  // Load the version check file.
+  // Pass NoPolicyScope because we do our own policy push/pop.
   bool suitable = false;
   if (this->ReadListFile(version_file, NoPolicyScope)) {
     // Check the output variables.

Source/cmMakefile.cxx

@@ -601,9 +601,7 @@ public:
 private:
   cmMakefile* Makefile;
   bool NoPolicyScope;
-  bool CheckCMP0011 = false;
   bool ReportError = true;
-  void EnforceCMP0011();
 };
 
 cmMakefile::IncludeScope::IncludeScope(cmMakefile* mf,
@@ -621,48 +619,15 @@ cmMakefile::IncludeScope::IncludeScope(cmMakefile* mf,
     this->Makefile->GetState()->CreateIncludeFileSnapshot(
       this->Makefile->StateSnapshot, filenametoread);
   if (!this->NoPolicyScope) {
-    // Check CMP0011 to determine the policy scope type.
-    switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0011)) {
-      case cmPolicies::WARN:
-        // We need to push a scope to detect whether the script sets
-        // any policies that would affect the includer and therefore
-        // requires a warning.  We use a weak scope to simulate OLD
-        // behavior by allowing policy changes to affect the includer.
-        this->Makefile->PushPolicy(true);
-        this->CheckCMP0011 = true;
-        break;
-      case cmPolicies::OLD:
-        // OLD behavior is to not push a scope at all.
-        this->NoPolicyScope = true;
-        break;
-      case cmPolicies::NEW:
-        // NEW behavior is to push a (strong) scope.
-        this->Makefile->PushPolicy();
-        break;
-    }
+    this->Makefile->PushPolicy();
   }
 }
 
 cmMakefile::IncludeScope::~IncludeScope()
 {
   if (!this->NoPolicyScope) {
-    // If we need to enforce policy CMP0011 then the top entry is the
-    // one we pushed above.  If the entry is empty, then the included
-    // script did not set any policies that might affect the includer so
-    // we do not need to enforce the policy.
-    if (this->CheckCMP0011 &&
-        !this->Makefile->StateSnapshot.HasDefinedPolicyCMP0011()) {
-      this->CheckCMP0011 = false;
-    }
-
     // Pop the scope we pushed for the script.
     this->Makefile->PopPolicy();
-
-    // We enforce the policy after the script's policy stack entry has
-    // been removed.
-    if (this->CheckCMP0011) {
-      this->EnforceCMP0011();
-    }
   }
   this->Makefile->PopSnapshot(this->ReportError);
 
@@ -671,36 +636,6 @@ cmMakefile::IncludeScope::~IncludeScope()
   this->Makefile->Backtrace = this->Makefile->Backtrace.Pop();
 }
 
-void cmMakefile::IncludeScope::EnforceCMP0011()
-{
-  // We check the setting of this policy again because the included
-  // script might actually set this policy for its includer.
-  switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0011)) {
-    case cmPolicies::WARN:
-      // Warn because the user did not set this policy.
-      {
-        auto e = cmStrCat(
-          cmPolicies::GetPolicyWarning(cmPolicies::CMP0011),
-          "\n"
-          "The included script\n"
-          "  ",
-          this->Makefile->GetBacktrace().Top().FilePath,
-          "\n"
-          "affects policy settings.  "
-          "CMake is implying the NO_POLICY_SCOPE option for compatibility, "
-          "so the effects are applied to the including context.");
-        this->Makefile->IssueMessage(MessageType::AUTHOR_WARNING, e);
-      }
-      break;
-    case cmPolicies::OLD:
-    case cmPolicies::NEW:
-      // The script set this policy.  We assume the purpose of the
-      // script is to initialize policies for its includer, and since
-      // the policy is now set for later scripts, we do not warn.
-      break;
-  }
-}
-
 bool cmMakefile::ReadDependentFile(const std::string& filename,
                                    bool noPolicyScope)
 {

Source/cmPolicies.h

@@ -47,7 +47,7 @@ class cmMakefile;
          3, NEW)                                                              \
   SELECT(POLICY, CMP0011,                                                     \
          "Included scripts do automatic cmake_policy PUSH and POP.", 2, 6, 3, \
-         WARN)                                                                \
+         NEW)                                                                 \
   SELECT(POLICY, CMP0012, "if() recognizes numbers and boolean constants.",   \
          2, 8, 0, WARN)                                                       \
   SELECT(POLICY, CMP0013, "Duplicate binary directories are not allowed.", 2, \

Source/cmStateSnapshot.cxx

@@ -200,11 +200,6 @@ cmPolicies::PolicyStatus cmStateSnapshot::GetPolicy(cmPolicies::PolicyID id,
   return status;
 }
 
-bool cmStateSnapshot::HasDefinedPolicyCMP0011()
-{
-  return !this->Position->Policies->IsEmpty();
-}
-
 cmValue cmStateSnapshot::GetDefinition(std::string const& name) const
 {
   assert(this->Position->Vars.IsValid());

Source/cmStateSnapshot.h

@@ -46,7 +46,6 @@ public:
   void SetPolicy(cmPolicies::PolicyID id, cmPolicies::PolicyStatus status);
   cmPolicies::PolicyStatus GetPolicy(cmPolicies::PolicyID id,
                                      bool parent_scope = false) const;
-  bool HasDefinedPolicyCMP0011();
   void PushPolicy(cmPolicies::PolicyMap const& entry, bool weak);
   bool PopPolicy();
   bool CanPopPolicyScope();

Tests/PolicyScope/CMakeLists.txt

@@ -10,28 +10,13 @@ function(check msg lhs rhs)
 endfunction()
 
 #-----------------------------------------------------------------------------
-# Test using a development framework that sets policies for us.
-
-cmake_policy(SET CMP0011 OLD)
-
 # Put the test modules in the search path.
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
 
-# The included file should set policies for us.
-find_package(Foo)
-
-# Check policies set by the package.
-cmake_policy(GET CMP0180 cmp)
-check(CMP0180 "OLD" "${cmp}")
-cmake_policy(GET CMP0179 cmp)
-check(CMP0179 "NEW" "${cmp}")
-cmake_policy(GET CMP0011 cmp)
-check(CMP0011 "NEW" "${cmp}")
-
 # Make sure an included file cannot change policies.
 include(Bar)
 cmake_policy(GET CMP0180 cmp)
-check(CMP0180 "OLD" "${cmp}")
+check(CMP0180 "" "${cmp}")
 
 # Allow the included file to change policies.
 include(Bar NO_POLICY_SCOPE)

Tests/PolicyScope/FindFoo.cmake

@@ -1,2 +0,0 @@
-cmake_minimum_required(VERSION 3.31)
-cmake_policy(SET CMP0180 OLD)

Tests/RunCMake/AppleTextStubs/LibraryWithVersions.cmake

@@ -25,7 +25,6 @@ set (GENERATE_CONTENT "if (\"${CMAKE_TAPI}\")
 endif()\n\n")
 
 string (APPEND GENERATE_CONTENT [[
-cmake_policy (SET CMP0011 NEW)
 cmake_policy (SET CMP0057 NEW)
 
 macro (CHECK_FILE test_msg path)

Tests/RunCMake/VS10Project/SourceGroupFileSet-check.cmake

@@ -1,5 +1,3 @@
-cmake_policy(SET CMP0011 NEW)
-
 set(vcFiltersFile "${RunCMake_TEST_BINARY_DIR}/SourceGroupFileSet.vcxproj.filters")
 if(NOT EXISTS "${vcFiltersFile}")
   set(RunCMake_TEST_FAILED "Filters file ${vcFiltersFile} does not exist.")

Tests/RunCMake/VS10Project/SourceGroupTreeCMakeLists-check.cmake

@@ -1,5 +1,3 @@
-cmake_policy(SET CMP0011 NEW)
-
 set(vcFiltersFile "${RunCMake_TEST_BINARY_DIR}/SourceGroupTree.vcxproj.filters")
 if(NOT EXISTS "${vcFiltersFile}")
   set(RunCMake_TEST_FAILED "Filters file ${vcFiltersFile} does not exist.")