cmGeneratorExpressionDAGChecker: Make local generator available in constructor

This is the local generator in the evaluation context, not that of
the current target/property pair.

Source/cmCommonTargetGenerator.cxx

@@ -501,7 +501,8 @@ std::string cmCommonTargetGenerator::GetLinkerLauncher(
   cmValue launcherProp = this->GeneratorTarget->GetProperty(propName);
   if (cmNonempty(launcherProp)) {
     cmGeneratorExpressionDAGChecker dagChecker(this->GeneratorTarget, propName,
-                                               nullptr, nullptr);
+                                               nullptr, nullptr,
+                                               this->LocalCommonGenerator);
     std::string evaluatedLinklauncher = cmGeneratorExpression::Evaluate(
       *launcherProp, this->LocalCommonGenerator, config, this->GeneratorTarget,
       &dagChecker, this->GeneratorTarget, lang);

Source/cmComputeLinkDepends.cxx

@@ -451,10 +451,14 @@ cmComputeLinkDepends::cmComputeLinkDepends(const cmGeneratorTarget* target,
         if (cmValue feature = this->Target->GetProperty(key)) {
           if (!feature->empty() && key.length() > lloPrefix.length()) {
             auto item = key.substr(lloPrefix.length());
-            cmGeneratorExpressionDAGChecker dag{ this->Target->GetBacktrace(),
-                                                 this->Target,
-                                                 "LINK_LIBRARY_OVERRIDE",
-                                                 nullptr, nullptr };
+            cmGeneratorExpressionDAGChecker dag{
+              this->Target->GetBacktrace(),
+              this->Target,
+              "LINK_LIBRARY_OVERRIDE",
+              nullptr,
+              nullptr,
+              this->Target->GetLocalGenerator()
+            };
             auto overrideFeature = cmGeneratorExpression::Evaluate(
               *feature, this->Target->GetLocalGenerator(), config,
               this->Target, &dag, this->Target, linkLanguage);
@@ -466,9 +470,12 @@ cmComputeLinkDepends::cmComputeLinkDepends(const cmGeneratorTarget* target,
   // global override property
   if (cmValue linkLibraryOverride =
         this->Target->GetProperty("LINK_LIBRARY_OVERRIDE")) {
-    cmGeneratorExpressionDAGChecker dag{ target->GetBacktrace(), target,
-                                         "LINK_LIBRARY_OVERRIDE", nullptr,
-                                         nullptr };
+    cmGeneratorExpressionDAGChecker dag{ target->GetBacktrace(),
+                                         target,
+                                         "LINK_LIBRARY_OVERRIDE",
+                                         nullptr,
+                                         nullptr,
+                                         target->GetLocalGenerator() };
     auto overrideValue = cmGeneratorExpression::Evaluate(
       *linkLibraryOverride, target->GetLocalGenerator(), config, target, &dag,
       target, linkLanguage);

Source/cmExportTryCompileFileGenerator.cxx

@@ -76,10 +76,10 @@ std::string cmExportTryCompileFileGenerator::FindTargets(
     // To please constraint checks of DAGChecker, this property must have
     // LINK_OPTIONS property as parent
     parentDagChecker = cm::make_unique<cmGeneratorExpressionDAGChecker>(
-      tgt, "LINK_OPTIONS", nullptr, nullptr);
+      tgt, "LINK_OPTIONS", nullptr, nullptr, tgt->GetLocalGenerator());
   }
-  cmGeneratorExpressionDAGChecker dagChecker(tgt, propName, nullptr,
-                                             parentDagChecker.get());
+  cmGeneratorExpressionDAGChecker dagChecker(
+    tgt, propName, nullptr, parentDagChecker.get(), tgt->GetLocalGenerator());
 
   std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(*prop);
 

Source/cmGeneratorExpression.cxx

@@ -425,7 +425,7 @@ const std::string& cmGeneratorExpressionInterpreter::Evaluate(
   cmGeneratorExpressionDAGChecker dagChecker(
     this->HeadTarget,
     property == "COMPILE_FLAGS" ? "COMPILE_OPTIONS" : property, nullptr,
-    nullptr);
+    nullptr, this->LocalGenerator);
 
   return this->CompiledGeneratorExpression->Evaluate(
     this->LocalGenerator, this->Config, this->HeadTarget, &dagChecker, nullptr,

Source/cmGeneratorExpressionDAGChecker.cxx

@@ -20,16 +20,17 @@
 cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
   cmGeneratorTarget const* target, std::string property,
   const GeneratorExpressionContent* content,
-  cmGeneratorExpressionDAGChecker* parent)
+  cmGeneratorExpressionDAGChecker* parent, cmLocalGenerator const* contextLG)
   : cmGeneratorExpressionDAGChecker(cmListFileBacktrace(), target,
-                                    std::move(property), content, parent)
+                                    std::move(property), content, parent,
+                                    contextLG)
 {
 }
 
 cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
   cmListFileBacktrace backtrace, cmGeneratorTarget const* target,
   std::string property, const GeneratorExpressionContent* content,
-  cmGeneratorExpressionDAGChecker* parent)
+  cmGeneratorExpressionDAGChecker* parent, cmLocalGenerator const* contextLG)
   : Parent(parent)
   , Top(parent ? parent->Top : this)
   , Target(target)
@@ -37,6 +38,7 @@ cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
   , Content(content)
   , Backtrace(std::move(backtrace))
 {
+  static_cast<void>(contextLG);
   if (parent) {
     this->TopIsTransitiveProperty = parent->TopIsTransitiveProperty;
   } else {

Source/cmGeneratorExpressionDAGChecker.h

@@ -13,6 +13,7 @@
 struct GeneratorExpressionContent;
 struct cmGeneratorExpressionContext;
 class cmGeneratorTarget;
+class cmLocalGenerator;
 
 #define CM_SELECT_BOTH(F, A1, A2) F(A1, A2)
 #define CM_SELECT_FIRST(F, A1, A2) F(A1)
@@ -47,11 +48,13 @@ struct cmGeneratorExpressionDAGChecker
                                   cmGeneratorTarget const* target,
                                   std::string property,
                                   const GeneratorExpressionContent* content,
-                                  cmGeneratorExpressionDAGChecker* parent);
+                                  cmGeneratorExpressionDAGChecker* parent,
+                                  cmLocalGenerator const* contextLG);
   cmGeneratorExpressionDAGChecker(cmGeneratorTarget const* target,
                                   std::string property,
                                   const GeneratorExpressionContent* content,
-                                  cmGeneratorExpressionDAGChecker* parent);
+                                  cmGeneratorExpressionDAGChecker* parent,
+                                  cmLocalGenerator const* contextLG);
 
   enum Result
   {

Source/cmGeneratorExpressionNode.cxx

@@ -487,7 +487,8 @@ protected:
     if (context->HeadTarget) {
       cmGeneratorExpressionDAGChecker dagChecker(
         context->Backtrace, context->HeadTarget,
-        genexOperator + ":" + expression, content, dagCheckerParent);
+        genexOperator + ":" + expression, content, dagCheckerParent,
+        context->LG);
       switch (dagChecker.Check()) {
         case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:
         case cmGeneratorExpressionDAGChecker::CYCLIC_REFERENCE: {
@@ -2927,8 +2928,9 @@ static const struct TargetPropertyNode : public cmGeneratorExpressionNode
           cmGeneratorTarget::LinkInterfaceFor::Usage));
     }
 
-    cmGeneratorExpressionDAGChecker dagChecker(
-      context->Backtrace, target, propertyName, content, dagCheckerParent);
+    cmGeneratorExpressionDAGChecker dagChecker(context->Backtrace, target,
+                                               propertyName, content,
+                                               dagCheckerParent, context->LG);
 
     switch (dagChecker.Check()) {
       case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:

Source/cmGeneratorTarget.cxx

@@ -877,7 +877,7 @@ std::string cmGeneratorTarget::GetLinkerTypeProperty(
   auto linkerType = this->GetProperty(propName);
   if (!linkerType.IsEmpty()) {
     cmGeneratorExpressionDAGChecker dagChecker(this, propName, nullptr,
-                                               nullptr);
+                                               nullptr, this->LocalGenerator);
     auto ltype =
       cmGeneratorExpression::Evaluate(*linkerType, this->GetLocalGenerator(),
                                       config, this, &dagChecker, this, lang);
@@ -1342,7 +1342,8 @@ bool cmGeneratorTarget::IsSystemIncludeDirectory(
 
   if (iter == this->SystemIncludesCache.end()) {
     cmGeneratorExpressionDAGChecker dagChecker(
-      this, "SYSTEM_INCLUDE_DIRECTORIES", nullptr, nullptr);
+      this, "SYSTEM_INCLUDE_DIRECTORIES", nullptr, nullptr,
+      this->LocalGenerator);
 
     bool excludeImported = this->GetPropertyAsBool("NO_SYSTEM_FROM_IMPORTED");
 
@@ -1450,7 +1451,8 @@ std::string cmGeneratorTarget::EvaluateInterfaceProperty(
   // a subset of TargetPropertyNode::Evaluate without stringify/parse steps
   // but sufficient for transitive interface properties.
   cmGeneratorExpressionDAGChecker dagChecker(context->Backtrace, this, prop,
-                                             nullptr, dagCheckerParent);
+                                             nullptr, dagCheckerParent,
+                                             this->LocalGenerator);
   switch (dagChecker.Check()) {
     case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:
       dagChecker.ReportError(
@@ -1529,8 +1531,10 @@ std::string AddLangSpecificInterfaceIncludeDirectories(
   const std::string& propertyName, IncludeDirectoryFallBack mode,
   cmGeneratorExpressionDAGChecker* context)
 {
-  cmGeneratorExpressionDAGChecker dag{ target->GetBacktrace(), target,
-                                       propertyName, nullptr, context };
+  cmGeneratorExpressionDAGChecker dag{
+    target->GetBacktrace(),     target, propertyName, nullptr, context,
+    target->GetLocalGenerator()
+  };
   switch (dag.Check()) {
     case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:
       dag.ReportError(
@@ -1580,8 +1584,10 @@ void AddLangSpecificImplicitIncludeDirectories(
 {
   if (const auto* libraries = target->GetLinkImplementationLibraries(
         config, LinkInterfaceFor::Usage)) {
-    cmGeneratorExpressionDAGChecker dag{ target->GetBacktrace(), target,
-                                         propertyName, nullptr, nullptr };
+    cmGeneratorExpressionDAGChecker dag{
+      target->GetBacktrace(),     target, propertyName, nullptr, nullptr,
+      target->GetLocalGenerator()
+    };
 
     for (const cmLinkImplItem& library : libraries->Libraries) {
       if (const cmGeneratorTarget* dependency = library.Target) {
@@ -1833,8 +1839,8 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetSourceFilePaths(
     this->DebugSourcesDone = true;
   }
 
-  cmGeneratorExpressionDAGChecker dagChecker(this, "SOURCES", nullptr,
-                                             nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(this, "SOURCES", nullptr, nullptr,
+                                             this->LocalGenerator);
 
   EvaluatedTargetPropertyEntries entries = EvaluateTargetPropertyEntries(
     this, config, std::string(), &dagChecker, this->SourceEntries);
@@ -3048,7 +3054,7 @@ void cmGeneratorTarget::GetAutoUicOptions(std::vector<std::string>& result,
   }
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "AUTOUIC_OPTIONS", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
   cmExpandList(cmGeneratorExpression::Evaluate(prop, this->LocalGenerator,
                                                config, this, &dagChecker),
                result);
@@ -3848,8 +3854,8 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetIncludeDirectories(
   std::vector<BT<std::string>> includes;
   std::unordered_set<std::string> uniqueIncludes;
 
-  cmGeneratorExpressionDAGChecker dagChecker(this, "INCLUDE_DIRECTORIES",
-                                             nullptr, nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(
+    this, "INCLUDE_DIRECTORIES", nullptr, nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4113,7 +4119,7 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileOptions(
   std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "COMPILE_OPTIONS", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4154,7 +4160,7 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileFeatures(
   std::unordered_set<std::string> uniqueFeatures;
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "COMPILE_FEATURES", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4203,8 +4209,8 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileDefinitions(
   std::vector<BT<std::string>> list;
   std::unordered_set<std::string> uniqueOptions;
 
-  cmGeneratorExpressionDAGChecker dagChecker(this, "COMPILE_DEFINITIONS",
-                                             nullptr, nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(
+    this, "COMPILE_DEFINITIONS", nullptr, nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4267,8 +4273,8 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetPrecompileHeaders(
   }
   std::unordered_set<std::string> uniqueOptions;
 
-  cmGeneratorExpressionDAGChecker dagChecker(this, "PRECOMPILE_HEADERS",
-                                             nullptr, nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(
+    this, "PRECOMPILE_HEADERS", nullptr, nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4657,7 +4663,7 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkOptions(
   std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_OPTIONS", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4825,8 +4831,8 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetStaticLibraryLinkOptions(
   std::vector<BT<std::string>> result;
   std::unordered_set<std::string> uniqueOptions;
 
-  cmGeneratorExpressionDAGChecker dagChecker(this, "STATIC_LIBRARY_OPTIONS",
-                                             nullptr, nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(
+    this, "STATIC_LIBRARY_OPTIONS", nullptr, nullptr, this->LocalGenerator);
 
   EvaluatedTargetPropertyEntries entries;
   if (cmValue linkOptions = this->GetProperty("STATIC_LIBRARY_OPTIONS")) {
@@ -4939,7 +4945,7 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkDirectories(
   std::unordered_set<std::string> uniqueDirectories;
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_DIRECTORIES", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
 
   cmList debugProperties{ this->Makefile->GetDefinition(
     "CMAKE_DEBUG_TARGET_PROPERTIES") };
@@ -4983,7 +4989,7 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkDepends(
   std::vector<BT<std::string>> result;
   std::unordered_set<std::string> uniqueOptions;
   cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_DEPENDS", nullptr,
-                                             nullptr);
+                                             nullptr, this->LocalGenerator);
 
   EvaluatedTargetPropertyEntries entries;
   if (cmValue linkDepends = this->GetProperty("LINK_DEPENDS")) {
@@ -6969,7 +6975,8 @@ void cmGeneratorTarget::ExpandLinkItems(
     return;
   }
   // Keep this logic in sync with ComputeLinkImplementationLibraries.
-  cmGeneratorExpressionDAGChecker dagChecker(this, prop, nullptr, nullptr);
+  cmGeneratorExpressionDAGChecker dagChecker(this, prop, nullptr, nullptr,
+                                             this->LocalGenerator);
   // The $<LINK_ONLY> expression may be in a link interface to specify
   // private link dependencies that are otherwise excluded from usage
   // requirements.
@@ -8640,7 +8647,7 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
   for (auto const& entry : entryRange) {
     // Keep this logic in sync with ExpandLinkItems.
     cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_LIBRARIES", nullptr,
-                                               nullptr);
+                                               nullptr, this->LocalGenerator);
     // The $<LINK_ONLY> expression may be used to specify link dependencies
     // that are otherwise excluded from usage requirements.
     if (implFor == LinkInterfaceFor::Usage) {

Source/cmQtAutoGenInitializer.cxx

@@ -1918,8 +1918,9 @@ bool cmQtAutoGenInitializer::SetupWriteAutogenInfo()
     info.SetBool("MOC_RELAXED_MODE", this->Moc.RelaxedMode);
     info.SetBool("MOC_PATH_PREFIX", this->Moc.PathPrefix);
 
-    cmGeneratorExpressionDAGChecker dagChecker(
-      this->GenTarget, "AUTOMOC_MACRO_NAMES", nullptr, nullptr);
+    cmGeneratorExpressionDAGChecker dagChecker(this->GenTarget,
+                                               "AUTOMOC_MACRO_NAMES", nullptr,
+                                               nullptr, this->LocalGen);
     EvaluatedTargetPropertyEntries InterfaceAutoMocMacroNamesEntries;
 
     if (this->MultiConfig) {