cmTarget: Don't allow setting read-only properties

Ensure that all documented read-only target properties now produce
errors when trying to set.

Help/manual/cmake-policies.7.rst

@@ -57,6 +57,7 @@ Policies Introduced by CMake 3.29
 .. toctree::
    :maxdepth: 1
 
+   CMP0160: More read-only target properties now error when trying to set them. </policy/CMP0160>
    CMP0159: file(STRINGS) with REGEX updates CMAKE_MATCH_<n>. </policy/CMP0159>
    CMP0158: add_test() honors CMAKE_CROSSCOMPILING_EMULATOR only when cross-compiling. </policy/CMP0158>
    CMP0157: Swift compilation mode is selected by an abstraction. </policy/CMP0157>

Help/policy/CMP0160.rst

@@ -0,0 +1,39 @@
+CMP0160
+-------
+
+.. versionadded:: 3.29
+
+More read-only target properties now error when trying to set them.
+
+The :command:`set_target_properties` and :command:`set_property` commands
+are intended to error out on all read-only properties. However, CMake 3.28 and
+below only did this for the following properties:
+
+* :prop_tgt:`HEADER_SETS`
+* :prop_tgt:`INTERFACE_HEADER_SETS`
+* :prop_tgt:`IMPORTED_GLOBAL`
+* :prop_tgt:`MANUALLY_ADDED_DEPENDENCIES`
+* :prop_tgt:`NAME`
+* :prop_tgt:`TYPE`
+
+This policy enforces the read-only nature of the following target properties:
+
+* :prop_tgt:`ALIAS_GLOBAL`
+* :prop_tgt:`BINARY_DIR`
+* :prop_tgt:`CXX_MODULE_SETS`
+* :prop_tgt:`IMPORTED`
+* :prop_tgt:`INTERFACE_CXX_MODULE_SETS`
+* :prop_tgt:`LOCATION`
+* :prop_tgt:`LOCATION_<CONFIG>`
+* :prop_tgt:`SOURCE_DIR`
+
+The ``OLD`` behavior for this policy is to only error out for the properties
+:prop_tgt:`MANUALLY_ADDED_DEPENDENCIES`, :prop_tgt:`NAME`, and :prop_tgt:`TYPE`.
+The ``NEW`` behavior for this policy is to error out on all target properties
+that are documented as read-only.
+
+.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.29
+.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
+.. include:: STANDARD_ADVICE.txt
+
+.. include:: DEPRECATED.txt

Source/cmPolicies.h

@@ -487,7 +487,11 @@ class cmMakefile;
          3, 29, 0, cmPolicies::WARN)                                          \
   SELECT(POLICY, CMP0159,                                                     \
          "file(STRINGS) with REGEX updates CMAKE_MATCH_<n>.", 3, 29, 0,       \
-         cmPolicies::WARN)
+         cmPolicies::WARN)                                                    \
+  SELECT(                                                                     \
+    POLICY, CMP0160,                                                          \
+    "More read-only target properties now error when trying to set them.", 3, \
+    29, 0, cmPolicies::WARN)
 
 #define CM_SELECT_ID(F, A1, A2, A3, A4, A5, A6) F(A1)
 #define CM_FOR_EACH_POLICY_ID(POLICY)                                         \
@@ -529,7 +533,8 @@ class cmMakefile;
   F(CMP0154)                                                                  \
   F(CMP0155)                                                                  \
   F(CMP0156)                                                                  \
-  F(CMP0157)
+  F(CMP0157)                                                                  \
+  F(CMP0160)
 
 #define CM_FOR_EACH_CUSTOM_COMMAND_POLICY(F)                                  \
   F(CMP0116)                                                                  \

Source/cmTarget.cxx

@@ -8,6 +8,7 @@
 #include <map>
 #include <set>
 #include <sstream>
+#include <unordered_map>
 #include <unordered_set>
 
 #include <cm/memory>
@@ -801,18 +802,6 @@ bool FileSetType::WriteProperties(cmTarget* tgt, cmTargetInternals* impl,
     }
     return true;
   }
-  if (prop == this->SelfEntries.PropertyName) {
-    impl->Makefile->IssueMessage(
-      MessageType::FATAL_ERROR,
-      cmStrCat(this->SelfEntries.PropertyName, " property is read-only\n"));
-    return true;
-  }
-  if (prop == this->InterfaceEntries.PropertyName) {
-    impl->Makefile->IssueMessage(MessageType::FATAL_ERROR,
-                                 cmStrCat(this->InterfaceEntries.PropertyName,
-                                          " property is read-only\n"));
-    return true;
-  }
   return false;
 }
 
@@ -1980,7 +1969,6 @@ MAKE_PROP(CUDA_CUBIN_COMPILATION);
 MAKE_PROP(CUDA_FATBIN_COMPILATION);
 MAKE_PROP(CUDA_OPTIX_COMPILATION);
 MAKE_PROP(CUDA_PTX_COMPILATION);
-MAKE_PROP(EXPORT_NAME);
 MAKE_PROP(IMPORTED);
 MAKE_PROP(IMPORTED_GLOBAL);
 MAKE_PROP(INCLUDE_DIRECTORIES);
@@ -2006,43 +1994,118 @@ MAKE_PROP(INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE);
 #undef MAKE_PROP
 }
 
+namespace {
+
+enum class ReadOnlyCondition
+{
+  All,
+  Imported,
+  NonImported,
+};
+
+struct ReadOnlyProperty
+{
+  ReadOnlyProperty(ReadOnlyCondition cond)
+    : Condition{ cond }
+    , Policy{} {};
+  ReadOnlyProperty(ReadOnlyCondition cond, cmPolicies::PolicyID id)
+    : Condition{ cond }
+    , Policy{ id } {};
+
+  ReadOnlyCondition Condition;
+  cm::optional<cmPolicies::PolicyID> Policy;
+
+  std::string message(const std::string& prop, cmTarget* target) const
+  {
+    std::string msg;
+    if (this->Condition == ReadOnlyCondition::All) {
+      msg = " property is read-only for target(\"";
+    } else if (this->Condition == ReadOnlyCondition::Imported) {
+      msg = " property can't be set on imported targets(\"";
+    } else if (this->Condition == ReadOnlyCondition::NonImported) {
+      msg = " property can't be set on non-imported targets(\"";
+    }
+    return cmStrCat(prop, msg, target->GetName(), "\")\n");
+  }
+
+  bool isReadOnly(const std::string& prop, cmMakefile* context,
+                  cmTarget* target) const
+  {
+    auto importedTarget = target->IsImported();
+    bool matchingCondition = true;
+    if ((!importedTarget && this->Condition == ReadOnlyCondition::Imported) ||
+        (importedTarget &&
+         this->Condition == ReadOnlyCondition::NonImported)) {
+      matchingCondition = false;
+    }
+    if (!matchingCondition) {
+      // Not read-only in this scenario
+      return false;
+    }
+
+    bool readOnly = true;
+    if (!this->Policy) {
+      // No policy associated, so is always read-only
+      context->IssueMessage(MessageType::FATAL_ERROR,
+                            this->message(prop, target));
+    } else {
+      switch (target->GetPolicyStatus(*this->Policy)) {
+        case cmPolicies::WARN:
+          context->IssueMessage(
+            MessageType::AUTHOR_WARNING,
+            cmPolicies::GetPolicyWarning(cmPolicies::CMP0160) + "\n" +
+              this->message(prop, target));
+          CM_FALLTHROUGH;
+        case cmPolicies::OLD:
+          readOnly = false;
+          break;
+        case cmPolicies::REQUIRED_ALWAYS:
+        case cmPolicies::REQUIRED_IF_USED:
+        case cmPolicies::NEW:
+          context->IssueMessage(MessageType::FATAL_ERROR,
+                                this->message(prop, target));
+          break;
+      }
+    }
+    return readOnly;
+  }
+};
+
+bool IsSetableProperty(cmMakefile* context, cmTarget* target,
+                       const std::string& prop)
+{
+  using ROC = ReadOnlyCondition;
+  static std::unordered_map<std::string, ReadOnlyProperty> const readOnlyProps{
+    { "EXPORT_NAME", { ROC::Imported } },
+    { "HEADER_SETS", { ROC::All } },
+    { "IMPORTED_GLOBAL", { ROC::NonImported } },
+    { "INTERFACE_HEADER_SETS", { ROC::All } },
+    { "MANUALLY_ADDED_DEPENDENCIES", { ROC::All } },
+    { "NAME", { ROC::All } },
+    { "SOURCES", { ROC::Imported } },
+    { "TYPE", { ROC::All } },
+    { "ALIAS_GLOBAL", { ROC::All, cmPolicies::CMP0160 } },
+    { "BINARY_DIR", { ROC::All, cmPolicies::CMP0160 } },
+    { "CXX_MODULE_SETS", { ROC::All, cmPolicies::CMP0160 } },
+    { "IMPORTED", { ROC::All, cmPolicies::CMP0160 } },
+    { "INTERFACE_CXX_MODULE_SETS", { ROC::All, cmPolicies::CMP0160 } },
+    { "LOCATION", { ROC::All, cmPolicies::CMP0160 } },
+    { "LOCATION_CONFIG", { ROC::All, cmPolicies::CMP0160 } },
+    { "SOURCE_DIR", { ROC::All, cmPolicies::CMP0160 } }
+  };
+
+  auto it = readOnlyProps.find(prop);
+
+  if (it != readOnlyProps.end()) {
+    return !(it->second.isReadOnly(prop, context, target));
+  }
+  return true;
+}
+}
+
 void cmTarget::SetProperty(const std::string& prop, cmValue value)
 {
-  if (prop == propMANUALLY_ADDED_DEPENDENCIES) {
-    this->impl->Makefile->IssueMessage(
-      MessageType::FATAL_ERROR,
-      "MANUALLY_ADDED_DEPENDENCIES property is read-only\n");
-    return;
-  }
-  if (prop == propNAME) {
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR,
-                                       "NAME property is read-only\n");
-    return;
-  }
-  if (prop == propTYPE) {
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR,
-                                       "TYPE property is read-only\n");
-    return;
-  }
-  if (prop == propEXPORT_NAME && this->IsImported()) {
-    std::ostringstream e;
-    e << "EXPORT_NAME property can't be set on imported targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
-    return;
-  }
-  if (prop == propSOURCES && this->IsImported()) {
-    std::ostringstream e;
-    e << "SOURCES property can't be set on imported targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
-    return;
-  }
-  if (prop == propIMPORTED_GLOBAL && !this->IsImported()) {
-    std::ostringstream e;
-    e << "IMPORTED_GLOBAL property can't be set on non-imported targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
+  if (!IsSetableProperty(this->impl->Makefile, this, prop)) {
     return;
   }
 
@@ -2187,40 +2250,23 @@ void cmTarget::AppendProperty(const std::string& prop,
                               cm::optional<cmListFileBacktrace> const& bt,
                               bool asString)
 {
-  if (prop == "NAME") {
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR,
-                                       "NAME property is read-only\n");
-    return;
-  }
-  if (prop == "EXPORT_NAME" && this->IsImported()) {
-    std::ostringstream e;
-    e << "EXPORT_NAME property can't be set on imported targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
-    return;
-  }
-  if (prop == "SOURCES" && this->IsImported()) {
-    std::ostringstream e;
-    e << "SOURCES property can't be set on imported targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
+  if (!IsSetableProperty(this->impl->Makefile, this, prop)) {
     return;
   }
   if (prop == "IMPORTED_GLOBAL") {
-    std::ostringstream e;
-    e << "IMPORTED_GLOBAL property can't be appended, only set on imported "
-         "targets (\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
-    return;
+    this->impl->Makefile->IssueMessage(
+      MessageType::FATAL_ERROR,
+      cmStrCat("IMPORTED_GLOBAL property can't be appended, only set on "
+               "imported targets (\"",
+               this->impl->Name, "\")\n"));
   }
   if (prop == propPRECOMPILE_HEADERS &&
       this->GetProperty("PRECOMPILE_HEADERS_REUSE_FROM")) {
-    std::ostringstream e;
-    e << "PRECOMPILE_HEADERS_REUSE_FROM property is already set on target "
-         "(\""
-      << this->impl->Name << "\")\n";
-    this->impl->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
+    this->impl->Makefile->IssueMessage(
+      MessageType::FATAL_ERROR,
+      cmStrCat(
+        "PRECOMPILE_HEADERS_REUSE_FROM property is already set on target (\"",
+        this->impl->Name, "\")\n"));
     return;
   }
 

Tests/RunCMake/CMP0160/CMP0160-NEW-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/CMP0160/CMP0160-NEW-stderr.txt

@@ -0,0 +1,233 @@
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  ALIAS_GLOBAL property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  BINARY_DIR property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  CXX_MODULE_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  IMPORTED property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_CXX_MODULE_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  LOCATION property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  LOCATION_CONFIG property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  SOURCE_DIR property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  IMPORTED_GLOBAL property can't be set on non-imported
+  targets\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for
+  target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  ALIAS_GLOBAL property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  BINARY_DIR property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  CXX_MODULE_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  IMPORTED property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_CXX_MODULE_SETS property is read-only for
+  target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  LOCATION property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  LOCATION_CONFIG property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  SOURCE_DIR property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  EXPORT_NAME property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  SOURCES property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-NEW.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/CMP0160/CMP0160-NEW.cmake

@@ -0,0 +1,4 @@
+
+project(ReadOnly LANGUAGES NONE)
+cmake_policy(SET CMP0160 NEW)
+include(${CMAKE_CURRENT_LIST_DIR}/READONLY_PROPERTIES.cmake)

Tests/RunCMake/CMP0160/CMP0160-OLD-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/CMP0160/CMP0160-OLD-stderr.txt

@@ -0,0 +1,104 @@
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  IMPORTED_GLOBAL property can't be set on non-imported
+  targets\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for
+  target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  EXPORT_NAME property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  SOURCES property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-OLD.cmake:4 \(include\)
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/CMP0160/CMP0160-OLD.cmake

@@ -0,0 +1,4 @@
+
+project(ReadOnly LANGUAGES NONE)
+cmake_policy(SET CMP0160 OLD)
+include(${CMAKE_CURRENT_LIST_DIR}/READONLY_PROPERTIES.cmake)

Tests/RunCMake/CMP0160/CMP0160-WARN-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/CMP0160/CMP0160-WARN-stderr.txt

@@ -0,0 +1,297 @@
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  ALIAS_GLOBAL property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  BINARY_DIR property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  CXX_MODULE_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  IMPORTED property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  INTERFACE_CXX_MODULE_SETS property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  LOCATION property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  LOCATION_CONFIG property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  SOURCE_DIR property is read-only for target\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  IMPORTED_GLOBAL property can't be set on non-imported
+  targets\("ReadOnlyLib"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  INTERFACE_HEADER_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  MANUALLY_ADDED_DEPENDENCIES property is read-only for
+  target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  NAME property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  TYPE property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  ALIAS_GLOBAL property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  BINARY_DIR property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  CXX_MODULE_SETS property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  IMPORTED property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  INTERFACE_CXX_MODULE_SETS property is read-only for
+  target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  LOCATION property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  LOCATION_CONFIG property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  Policy CMP0160 is not set: More read-only target properties now error when
+  trying to set them.  Run "cmake --help-policy CMP0160" for policy details.
+  Use the cmake_policy command to set the policy and suppress this warning.
+
+  SOURCE_DIR property is read-only for target\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  EXPORT_NAME property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)
+
+
+CMake Error at READONLY_PROPERTIES.cmake:44 \(set_target_properties\):
+  SOURCES property can't be set on imported targets\("ReadOnlyImport"\)
+
+Call Stack \(most recent call first\):
+  CMP0160-WARN.cmake:3 \(include\)
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/CMP0160/CMP0160-WARN.cmake

@@ -0,0 +1,3 @@
+
+project(ReadOnly LANGUAGES NONE)
+include(${CMAKE_CURRENT_LIST_DIR}/READONLY_PROPERTIES.cmake)

Tests/RunCMake/CMP0160/CMakeLists.txt

@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.28)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)

Tests/RunCMake/CMP0160/READONLY_PROPERTIES.cmake

@@ -0,0 +1,52 @@
+
+set(read_only_properties
+  "HEADER_SETS"
+  "INTERFACE_HEADER_SETS"
+  "MANUALLY_ADDED_DEPENDENCIES"
+  "NAME"
+  "TYPE"
+  )
+set(read_only_properties_imported
+  "EXPORT_NAME"
+  "SOURCES"
+  )
+set(read_only_properties_nonimported
+  "IMPORTED_GLOBAL"
+  )
+set(read_only_properties_160
+    "ALIAS_GLOBAL"
+    "BINARY_DIR"
+    "CXX_MODULE_SETS"
+    "IMPORTED"
+    "INTERFACE_CXX_MODULE_SETS"
+    "LOCATION"
+    "LOCATION_CONFIG"
+    "SOURCE_DIR"
+    )
+
+cmake_policy(GET CMP0160 policy160)
+add_library(ReadOnlyLib )
+add_library(ReadOnlyImport IMPORTED UNKNOWN)
+
+foreach(target ReadOnlyLib ReadOnlyImport)
+  get_target_property(is_imported ${target} IMPORTED)
+  set(are_read_only ${read_only_properties})
+  if(NOT policy160 STREQUAL "OLD")
+    list(APPEND are_read_only ${read_only_properties_160})
+  endif()
+  if(is_imported)
+    list(APPEND are_read_only ${read_only_properties_imported})
+  else()
+    list(APPEND are_read_only ${read_only_properties_nonimported})
+  endif()
+
+  foreach(prop IN LISTS are_read_only)
+    set_target_properties(${target} PROPERTIES ${prop} "a_value")
+  endforeach()
+
+  if(policy160 STREQUAL "OLD")
+    foreach(prop IN LISTS read_only_properties_160)
+      set_target_properties(${target} PROPERTIES ${prop} "a_value")
+    endforeach()
+  endif()
+endforeach()

Tests/RunCMake/CMP0160/RunCMakeTest.cmake

@@ -0,0 +1,5 @@
+include(RunCMake)
+
+run_cmake(CMP0160-WARN)
+run_cmake(CMP0160-OLD)
+run_cmake(CMP0160-NEW)

Tests/RunCMake/CMakeLists.txt

@@ -168,6 +168,7 @@ endif()
 add_RunCMake_test(CMP0153)
 add_RunCMake_test(CMP0156 -DCMAKE_C_COMPILER_ID=${CMAKE_C_COMPILER_ID}
                           -DCMAKE_C_COMPILER_VERSION=${CMAKE_C_COMPILER_VERSION})
+add_RunCMake_test(CMP0160)
 
 # The test for Policy 65 requires the use of the
 # CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS variable, which both the VS and Xcode

Tests/RunCMake/TargetPolicies/PolicyList-stderr.txt

@@ -41,6 +41,7 @@
    \* CMP0155
    \* CMP0156
    \* CMP0157
+   \* CMP0160
 
 Call Stack \(most recent call first\):
   CMakeLists.txt:3 \(include\)

Tests/RunCMake/set_property/IMPORTED_GLOBAL-stderr.txt

@@ -23,8 +23,8 @@ Call Stack \(most recent call first\):
 
 
 CMake Error at IMPORTED_GLOBAL.cmake:32 \(set_property\):
-  IMPORTED_GLOBAL property can't be set on non-imported targets
-  \(\"NonImportedTarget\"\)
+  IMPORTED_GLOBAL property can't be set on non-imported
+  targets\(\"NonImportedTarget\"\)
 
 Call Stack \(most recent call first\):
   CMakeLists\.txt:[0-9]+ \(include\)

Tests/RunCMake/target_sources/FileSetReadOnlyInterface-stderr.txt

@@ -1,5 +1,5 @@
 ^CMake Error at FileSetReadOnlyInterface\.cmake:[0-9]+ \(set_property\):
-  INTERFACE_HEADER_SETS property is read-only
+  INTERFACE_HEADER_SETS property is read-only for target\("lib1"\)
 
 Call Stack \(most recent call first\):
   CMakeLists\.txt:[0-9]+ \(include\)$

Tests/RunCMake/target_sources/FileSetReadOnlyPrivate-stderr.txt

@@ -1,5 +1,5 @@
 ^CMake Error at FileSetReadOnlyPrivate\.cmake:[0-9]+ \(set_property\):
-  HEADER_SETS property is read-only
+  HEADER_SETS property is read-only for target\("lib1"\)
 
 Call Stack \(most recent call first\):
   CMakeLists\.txt:[0-9]+ \(include\)$