cmGeneratorTarget: Refactor usage requirement genex evaluation

Evaluate usage requirement generator expressions fully before entering
the processing loops.  This allows us to evaluate and collect all
entries up front and then have only one call to the loop over them.
This also allows `AddInterfaceEntries` to immediately evaluate the
generator expressions it synthesizes, which will enable later
optimization.

Source/cmGeneratorTarget.cxx

@@ -206,6 +206,63 @@ void CreatePropertyGeneratorExpressions(
   }
 }
 
+namespace {
+// Represent a target property entry after evaluating generator expressions
+// and splitting up lists.
+struct EvaluatedTargetPropertyEntry
+{
+  EvaluatedTargetPropertyEntry(cmLinkImplItem const& item,
+                               cmListFileBacktrace bt)
+    : LinkImplItem(item)
+    , Backtrace(std::move(bt))
+  {
+  }
+
+  // Move-only.
+  EvaluatedTargetPropertyEntry(EvaluatedTargetPropertyEntry&&) = default;
+  EvaluatedTargetPropertyEntry(EvaluatedTargetPropertyEntry const&) = delete;
+  EvaluatedTargetPropertyEntry& operator=(EvaluatedTargetPropertyEntry&&) =
+    delete;
+  EvaluatedTargetPropertyEntry& operator=(
+    EvaluatedTargetPropertyEntry const&) = delete;
+
+  cmLinkImplItem const& LinkImplItem;
+  cmListFileBacktrace Backtrace;
+  std::vector<std::string> Values;
+  bool ContextDependent = false;
+};
+
+EvaluatedTargetPropertyEntry EvaluateTargetPropertyEntry(
+  cmGeneratorTarget const* thisTarget, std::string const& config,
+  std::string const& lang, cmGeneratorExpressionDAGChecker* dagChecker,
+  cmGeneratorTarget::TargetPropertyEntry* entry)
+{
+  EvaluatedTargetPropertyEntry ee(entry->LinkImplItem, entry->GetBacktrace());
+  cmSystemTools::ExpandListArgument(
+    entry->Evaluate(thisTarget->GetLocalGenerator(), config, false, thisTarget,
+                    dagChecker, lang),
+    ee.Values);
+  if (entry->GetHadContextSensitiveCondition()) {
+    ee.ContextDependent = true;
+  }
+  return ee;
+}
+
+std::vector<EvaluatedTargetPropertyEntry> EvaluateTargetPropertyEntries(
+  cmGeneratorTarget const* thisTarget, std::string const& config,
+  std::string const& lang, cmGeneratorExpressionDAGChecker* dagChecker,
+  std::vector<cmGeneratorTarget::TargetPropertyEntry*> const& in)
+{
+  std::vector<EvaluatedTargetPropertyEntry> out;
+  out.reserve(in.size());
+  for (cmGeneratorTarget::TargetPropertyEntry* entry : in) {
+    out.emplace_back(EvaluateTargetPropertyEntry(thisTarget, config, lang,
+                                                 dagChecker, entry));
+  }
+  return out;
+}
+}
+
 cmGeneratorTarget::cmGeneratorTarget(cmTarget* t, cmLocalGenerator* lg)
   : Target(t)
   , FortranModuleDirectoryCreated(false)
@@ -1085,78 +1142,90 @@ bool cmGeneratorTarget::GetPropertyAsBool(const std::string& prop) const
 }
 
 namespace {
-void AddInterfaceEntries(
-  cmGeneratorTarget const* thisTarget, std::string const& config,
-  std::string const& prop,
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries)
+void AddInterfaceEntries(cmGeneratorTarget const* headTarget,
+                         std::string const& config, std::string const& prop,
+                         std::string const& lang,
+                         cmGeneratorExpressionDAGChecker* dagChecker,
+                         std::vector<EvaluatedTargetPropertyEntry>& entries)
 {
   if (cmLinkImplementationLibraries const* impl =
-        thisTarget->GetLinkImplementationLibraries(config)) {
+        headTarget->GetLinkImplementationLibraries(config)) {
     for (cmLinkImplItem const& lib : impl->Libraries) {
       if (lib.Target) {
         std::string uniqueName =
-          thisTarget->GetGlobalGenerator()->IndexGeneratorTargetUniquely(
+          headTarget->GetGlobalGenerator()->IndexGeneratorTargetUniquely(
             lib.Target);
         std::string genex =
           "$<TARGET_PROPERTY:" + std::move(uniqueName) + "," + prop + ">";
         cmGeneratorExpression ge(lib.Backtrace);
         std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
         cge->SetEvaluateForBuildsystem(true);
-        entries.push_back(new TargetPropertyEntryGenex(std::move(cge), lib));
+
+        EvaluatedTargetPropertyEntry ee(lib, lib.Backtrace);
+        cmSystemTools::ExpandListArgument(
+          cge->Evaluate(headTarget->GetLocalGenerator(), config, false,
+                        headTarget, dagChecker, lang),
+          ee.Values);
+        if (cge->GetHadContextSensitiveCondition()) {
+          ee.ContextDependent = true;
+        }
+        entries.emplace_back(std::move(ee));
       }
     }
   }
 }
 
-void AddObjectEntries(
-  cmGeneratorTarget const* thisTarget, std::string const& config,
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries)
+void AddObjectEntries(cmGeneratorTarget const* headTarget,
+                      std::string const& config,
+                      cmGeneratorExpressionDAGChecker* dagChecker,
+                      std::vector<EvaluatedTargetPropertyEntry>& entries)
 {
   if (cmLinkImplementationLibraries const* impl =
-        thisTarget->GetLinkImplementationLibraries(config)) {
+        headTarget->GetLinkImplementationLibraries(config)) {
     for (cmLinkImplItem const& lib : impl->Libraries) {
       if (lib.Target &&
           lib.Target->GetType() == cmStateEnums::OBJECT_LIBRARY) {
         std::string uniqueName =
-          thisTarget->GetGlobalGenerator()->IndexGeneratorTargetUniquely(
+          headTarget->GetGlobalGenerator()->IndexGeneratorTargetUniquely(
             lib.Target);
         std::string genex = "$<TARGET_OBJECTS:" + std::move(uniqueName) + ">";
         cmGeneratorExpression ge(lib.Backtrace);
         std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
         cge->SetEvaluateForBuildsystem(true);
-        entries.push_back(new TargetPropertyEntryGenex(std::move(cge), lib));
+
+        EvaluatedTargetPropertyEntry ee(lib, lib.Backtrace);
+        cmSystemTools::ExpandListArgument(
+          cge->Evaluate(headTarget->GetLocalGenerator(), config, false,
+                        headTarget, dagChecker),
+          ee.Values);
+        if (cge->GetHadContextSensitiveCondition()) {
+          ee.ContextDependent = true;
+        }
+        entries.emplace_back(std::move(ee));
       }
     }
   }
 }
 
-bool processSources(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& srcs,
-  std::unordered_set<std::string>& uniqueSrcs,
-  cmGeneratorExpressionDAGChecker* dagChecker, std::string const& config,
-  bool debugSources)
+bool processSources(cmGeneratorTarget const* tgt,
+                    std::vector<EvaluatedTargetPropertyEntry>& entries,
+                    std::vector<BT<std::string>>& srcs,
+                    std::unordered_set<std::string>& uniqueSrcs,
+                    bool debugSources)
 {
   cmMakefile* mf = tgt->Target->GetMakefile();
 
   bool contextDependent = false;
 
-  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
-    std::vector<std::string> entrySources;
-    cmSystemTools::ExpandListArgument(entry->Evaluate(tgt->GetLocalGenerator(),
-                                                      config, false, tgt,
-                                                      dagChecker),
-                                      entrySources);
-
-    if (entry->GetHadContextSensitiveCondition()) {
+  for (EvaluatedTargetPropertyEntry& entry : entries) {
+    if (entry.ContextDependent) {
       contextDependent = true;
     }
 
-    cmLinkImplItem const& item = entry->LinkImplItem;
+    cmLinkImplItem const& item = entry.LinkImplItem;
     std::string const& targetName = item.AsStr();
 
-    for (std::string& src : entrySources) {
+    for (std::string& src : entry.Values) {
       cmSourceFile* sf = mf->GetOrCreateSource(src);
       std::string e;
       std::string fullPath = sf->GetFullPath(&e);
@@ -1185,9 +1254,9 @@ bool processSources(
       src = fullPath;
     }
     std::string usedSources;
-    for (std::string const& src : entrySources) {
+    for (std::string const& src : entry.Values) {
       if (uniqueSrcs.insert(src).second) {
-        srcs.emplace_back(src, entry->GetBacktrace());
+        srcs.emplace_back(src, entry.Backtrace);
         if (debugSources) {
           usedSources += " * " + src + "\n";
         }
@@ -1198,7 +1267,7 @@ bool processSources(
         MessageType::LOG,
         std::string("Used sources for target ") + tgt->GetName() + ":\n" +
           usedSources,
-        entry->GetBacktrace());
+        entry.Backtrace);
     }
   }
   return contextDependent;
@@ -1251,28 +1320,28 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetSourceFilePaths(
   cmGeneratorExpressionDAGChecker dagChecker(this, "SOURCES", nullptr,
                                              nullptr);
 
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, std::string(), &dagChecker,
+                                  this->SourceEntries);
+
   std::unordered_set<std::string> uniqueSrcs;
   bool contextDependentDirectSources =
-    processSources(this, this->SourceEntries, files, uniqueSrcs, &dagChecker,
-                   config, debugSources);
+    processSources(this, entries, files, uniqueSrcs, debugSources);
 
   // Collect INTERFACE_SOURCES of all direct link-dependencies.
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceSourcesEntries;
-  AddInterfaceEntries(this, config, "INTERFACE_SOURCES",
-                      linkInterfaceSourcesEntries);
+  std::vector<EvaluatedTargetPropertyEntry> linkInterfaceSourcesEntries;
+  AddInterfaceEntries(this, config, "INTERFACE_SOURCES", std::string(),
+                      &dagChecker, linkInterfaceSourcesEntries);
   std::vector<std::string>::size_type numFilesBefore = files.size();
-  bool contextDependentInterfaceSources =
-    processSources(this, linkInterfaceSourcesEntries, files, uniqueSrcs,
-                   &dagChecker, config, debugSources);
+  bool contextDependentInterfaceSources = processSources(
+    this, linkInterfaceSourcesEntries, files, uniqueSrcs, debugSources);
 
   // Collect TARGET_OBJECTS of direct object link-dependencies.
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*> linkObjectsEntries;
-  AddObjectEntries(this, config, linkObjectsEntries);
+  std::vector<EvaluatedTargetPropertyEntry> linkObjectsEntries;
+  AddObjectEntries(this, config, &dagChecker, linkObjectsEntries);
   std::vector<std::string>::size_type numFilesBefore2 = files.size();
   bool contextDependentObjects =
-    processSources(this, linkObjectsEntries, files, uniqueSrcs, &dagChecker,
-                   config, debugSources);
+    processSources(this, linkObjectsEntries, files, uniqueSrcs, debugSources);
 
   if (!contextDependentDirectSources &&
       !(contextDependentInterfaceSources && numFilesBefore < files.size()) &&
@@ -1280,8 +1349,6 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetSourceFilePaths(
     this->LinkImplementationLanguageIsContextDependent = false;
   }
 
-  cmDeleteAll(linkInterfaceSourcesEntries);
-  cmDeleteAll(linkObjectsEntries);
   return files;
 }
 
@@ -2775,25 +2842,18 @@ std::string cmGeneratorTarget::GetCreateRuleVariable(
 namespace {
 void processIncludeDirectories(
   cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
+  std::vector<EvaluatedTargetPropertyEntry>& entries,
   std::vector<BT<std::string>>& includes,
-  std::unordered_set<std::string>& uniqueIncludes,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugIncludes, const std::string& language)
-{
-  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
-    std::vector<std::string> entryIncludes;
-    cmSystemTools::ExpandListArgument(entry->Evaluate(tgt->GetLocalGenerator(),
-                                                      config, false, tgt,
-                                                      dagChecker, language),
-                                      entryIncludes);
-    cmLinkImplItem const& item = entry->LinkImplItem;
+  std::unordered_set<std::string>& uniqueIncludes, bool debugIncludes)
+{
+  for (EvaluatedTargetPropertyEntry& entry : entries) {
+    cmLinkImplItem const& item = entry.LinkImplItem;
     std::string const& targetName = item.AsStr();
     bool const fromImported = item.Target && item.Target->IsImported();
     bool const checkCMP0027 = item.FromGenex;
 
     std::string usedIncludes;
-    for (std::string& entryInclude : entryIncludes) {
+    for (std::string& entryInclude : entry.Values) {
       if (fromImported && !cmSystemTools::FileExists(entryInclude)) {
         std::ostringstream e;
         MessageType messageType = MessageType::FATAL_ERROR;
@@ -2867,7 +2927,7 @@ void processIncludeDirectories(
       }
 
       if (uniqueIncludes.insert(entryInclude).second) {
-        includes.emplace_back(entryInclude, entry->GetBacktrace());
+        includes.emplace_back(entryInclude, entry.Backtrace);
         if (debugIncludes) {
           usedIncludes += " * " + entryInclude + "\n";
         }
@@ -2878,7 +2938,7 @@ void processIncludeDirectories(
         MessageType::LOG,
         std::string("Used includes for target ") + tgt->GetName() + ":\n" +
           usedIncludes,
-        entry->GetBacktrace());
+        entry.Backtrace);
     }
   }
 }
@@ -2908,14 +2968,12 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetIncludeDirectories(
     this->DebugIncludesDone = true;
   }
 
-  processIncludeDirectories(this, this->IncludeDirectoriesEntries, includes,
-                            uniqueIncludes, &dagChecker, config, debugIncludes,
-                            lang);
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, lang, &dagChecker,
+                                  this->IncludeDirectoriesEntries);
 
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceIncludeDirectoriesEntries;
-  AddInterfaceEntries(this, config, "INTERFACE_INCLUDE_DIRECTORIES",
-                      linkInterfaceIncludeDirectoriesEntries);
+  AddInterfaceEntries(this, config, "INTERFACE_INCLUDE_DIRECTORIES", lang,
+                      &dagChecker, entries);
 
   if (this->Makefile->IsOn("APPLE")) {
     cmLinkImplementationLibraries const* impl =
@@ -2931,16 +2989,14 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetIncludeDirectories(
 
       libDir = frameworkCheck.match(1);
 
-      linkInterfaceIncludeDirectoriesEntries.push_back(
-        CreateTargetPropertyEntry(libDir));
+      EvaluatedTargetPropertyEntry ee(lib, cmListFileBacktrace());
+      ee.Values.emplace_back(std::move(libDir));
+      entries.emplace_back(std::move(ee));
     }
   }
 
-  processIncludeDirectories(this, linkInterfaceIncludeDirectoriesEntries,
-                            includes, uniqueIncludes, &dagChecker, config,
-                            debugIncludes, lang);
-
-  cmDeleteAll(linkInterfaceIncludeDirectoriesEntries);
+  processIncludeDirectories(this, entries, includes, uniqueIncludes,
+                            debugIncludes);
 
   return includes;
 }
@@ -2952,33 +3008,25 @@ enum class OptionsParse
 };
 
 namespace {
-void processOptionsInternal(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugOptions, const char* logName, std::string const& language,
-  OptionsParse parse)
-{
-  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
-    std::vector<std::string> entryOptions;
-    cmSystemTools::ExpandListArgument(entry->Evaluate(tgt->GetLocalGenerator(),
-                                                      config, false, tgt,
-                                                      dagChecker, language),
-                                      entryOptions);
+void processOptions(cmGeneratorTarget const* tgt,
+                    std::vector<EvaluatedTargetPropertyEntry> const& entries,
+                    std::vector<BT<std::string>>& options,
+                    std::unordered_set<std::string>& uniqueOptions,
+                    bool debugOptions, const char* logName, OptionsParse parse)
+{
+  for (EvaluatedTargetPropertyEntry const& entry : entries) {
     std::string usedOptions;
-    for (std::string const& opt : entryOptions) {
+    for (std::string const& opt : entry.Values) {
       if (uniqueOptions.insert(opt).second) {
         if (parse == OptionsParse::Shell &&
             cmHasLiteralPrefix(opt, "SHELL:")) {
           std::vector<std::string> tmp;
           cmSystemTools::ParseUnixCommandLine(opt.c_str() + 6, tmp);
           for (std::string& o : tmp) {
-            options.emplace_back(std::move(o), entry->GetBacktrace());
+            options.emplace_back(std::move(o), entry.Backtrace);
           }
         } else {
-          options.emplace_back(opt, entry->GetBacktrace());
+          options.emplace_back(opt, entry.Backtrace);
         }
         if (debugOptions) {
           usedOptions += " * " + opt + "\n";
@@ -2990,23 +3038,10 @@ void processOptionsInternal(
         MessageType::LOG,
         std::string("Used ") + logName + std::string(" for target ") +
           tgt->GetName() + ":\n" + usedOptions,
-        entry->GetBacktrace());
+        entry.Backtrace);
     }
   }
 }
-
-void processCompileOptions(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugOptions, std::string const& language)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, debugOptions, "compile options", language,
-                         OptionsParse::Shell);
-}
 }
 
 void cmGeneratorTarget::GetCompileOptions(std::vector<std::string>& result,
@@ -3044,39 +3079,19 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileOptions(
     this->DebugCompileOptionsDone = true;
   }
 
-  processCompileOptions(this, this->CompileOptionsEntries, result,
-                        uniqueOptions, &dagChecker, config, debugOptions,
-                        language);
-
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceCompileOptionsEntries;
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, language, &dagChecker,
+                                  this->CompileOptionsEntries);
 
-  AddInterfaceEntries(this, config, "INTERFACE_COMPILE_OPTIONS",
-                      linkInterfaceCompileOptionsEntries);
+  AddInterfaceEntries(this, config, "INTERFACE_COMPILE_OPTIONS", language,
+                      &dagChecker, entries);
 
-  processCompileOptions(this, linkInterfaceCompileOptionsEntries, result,
-                        uniqueOptions, &dagChecker, config, debugOptions,
-                        language);
+  processOptions(this, entries, result, uniqueOptions, debugOptions,
+                 "compile options", OptionsParse::Shell);
 
-  cmDeleteAll(linkInterfaceCompileOptionsEntries);
   return result;
 }
 
-namespace {
-void processCompileFeatures(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugOptions)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, debugOptions, "compile features",
-                         std::string(), OptionsParse::None);
-}
-}
-
 void cmGeneratorTarget::GetCompileFeatures(std::vector<std::string>& result,
                                            const std::string& config) const
 {
@@ -3111,36 +3126,19 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileFeatures(
     this->DebugCompileFeaturesDone = true;
   }
 
-  processCompileFeatures(this, this->CompileFeaturesEntries, result,
-                         uniqueFeatures, &dagChecker, config, debugFeatures);
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, std::string(), &dagChecker,
+                                  this->CompileFeaturesEntries);
 
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceCompileFeaturesEntries;
   AddInterfaceEntries(this, config, "INTERFACE_COMPILE_FEATURES",
-                      linkInterfaceCompileFeaturesEntries);
+                      std::string(), &dagChecker, entries);
 
-  processCompileFeatures(this, linkInterfaceCompileFeaturesEntries, result,
-                         uniqueFeatures, &dagChecker, config, debugFeatures);
+  processOptions(this, entries, result, uniqueFeatures, debugFeatures,
+                 "compile features", OptionsParse::None);
 
-  cmDeleteAll(linkInterfaceCompileFeaturesEntries);
   return result;
 }
 
-namespace {
-void processCompileDefinitions(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugOptions, std::string const& language)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, debugOptions, "compile definitions", language,
-                         OptionsParse::None);
-}
-}
-
 void cmGeneratorTarget::GetCompileDefinitions(
   std::vector<std::string>& result, const std::string& config,
   const std::string& language) const
@@ -3177,14 +3175,13 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileDefinitions(
     this->DebugCompileDefinitionsDone = true;
   }
 
-  processCompileDefinitions(this, this->CompileDefinitionsEntries, list,
-                            uniqueOptions, &dagChecker, config, debugDefines,
-                            language);
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, language, &dagChecker,
+                                  this->CompileDefinitionsEntries);
+
+  AddInterfaceEntries(this, config, "INTERFACE_COMPILE_DEFINITIONS", language,
+                      &dagChecker, entries);
 
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceCompileDefinitionsEntries;
-  AddInterfaceEntries(this, config, "INTERFACE_COMPILE_DEFINITIONS",
-                      linkInterfaceCompileDefinitionsEntries);
   if (!config.empty()) {
     std::string configPropName =
       "COMPILE_DEFINITIONS_" + cmSystemTools::UpperCase(config);
@@ -3199,8 +3196,10 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileDefinitions(
           CM_FALLTHROUGH;
         }
         case cmPolicies::OLD: {
-          linkInterfaceCompileDefinitionsEntries.push_back(
+          std::unique_ptr<TargetPropertyEntry> entry(
             CreateTargetPropertyEntry(configProp));
+          entries.emplace_back(EvaluateTargetPropertyEntry(
+            this, config, language, &dagChecker, entry.get()));
         } break;
         case cmPolicies::NEW:
         case cmPolicies::REQUIRED_ALWAYS:
@@ -3210,29 +3209,12 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetCompileDefinitions(
     }
   }
 
-  processCompileDefinitions(this, linkInterfaceCompileDefinitionsEntries, list,
-                            uniqueOptions, &dagChecker, config, debugDefines,
-                            language);
+  processOptions(this, entries, list, uniqueOptions, debugDefines,
+                 "compile definitions", OptionsParse::None);
 
-  cmDeleteAll(linkInterfaceCompileDefinitionsEntries);
   return list;
 }
 
-namespace {
-void processLinkOptions(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugOptions, std::string const& language)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, debugOptions, "link options", language,
-                         OptionsParse::Shell);
-}
-}
-
 void cmGeneratorTarget::GetLinkOptions(std::vector<std::string>& result,
                                        const std::string& config,
                                        const std::string& language) const
@@ -3268,20 +3250,15 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkOptions(
     this->DebugLinkOptionsDone = true;
   }
 
-  processLinkOptions(this, this->LinkOptionsEntries, result, uniqueOptions,
-                     &dagChecker, config, debugOptions, language);
-
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceLinkOptionsEntries;
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, language, &dagChecker,
+                                  this->LinkOptionsEntries);
 
-  AddInterfaceEntries(this, config, "INTERFACE_LINK_OPTIONS",
-                      linkInterfaceLinkOptionsEntries);
+  AddInterfaceEntries(this, config, "INTERFACE_LINK_OPTIONS", language,
+                      &dagChecker, entries);
 
-  processLinkOptions(this, linkInterfaceLinkOptionsEntries, result,
-                     uniqueOptions, &dagChecker, config, debugOptions,
-                     language);
-
-  cmDeleteAll(linkInterfaceLinkOptionsEntries);
+  processOptions(this, entries, result, uniqueOptions, debugOptions,
+                 "link options", OptionsParse::Shell);
 
   // Last step: replace "LINKER:" prefixed elements by
   // actual linker wrapper
@@ -3387,21 +3364,6 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkOptions(
   return result;
 }
 
-namespace {
-void processStaticLibraryLinkOptions(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  std::string const& language)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, false, "static library link options",
-                         language, OptionsParse::Shell);
-}
-}
-
 void cmGeneratorTarget::GetStaticLibraryLinkOptions(
   std::vector<std::string>& result, const std::string& config,
   const std::string& language) const
@@ -3418,47 +3380,41 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetStaticLibraryLinkOptions(
   std::string const& config, std::string const& language) const
 {
   std::vector<BT<std::string>> result;
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*> entries;
   std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(this, "STATIC_LIBRARY_OPTIONS",
                                              nullptr, nullptr);
 
+  std::vector<EvaluatedTargetPropertyEntry> entries;
   if (const char* linkOptions = this->GetProperty("STATIC_LIBRARY_OPTIONS")) {
     std::vector<std::string> options;
     cmSystemTools::ExpandListArgument(linkOptions, options);
     for (const auto& option : options) {
-      entries.push_back(CreateTargetPropertyEntry(option));
+      std::unique_ptr<TargetPropertyEntry> entry(
+        CreateTargetPropertyEntry(option));
+      entries.emplace_back(EvaluateTargetPropertyEntry(
+        this, config, language, &dagChecker, entry.get()));
     }
   }
-  processStaticLibraryLinkOptions(this, entries, result, uniqueOptions,
-                                  &dagChecker, config, language);
+  processOptions(this, entries, result, uniqueOptions, false,
+                 "static library link options", OptionsParse::Shell);
 
-  cmDeleteAll(entries);
   return result;
 }
 
 namespace {
-void processLinkDirectories(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& directories,
-  std::unordered_set<std::string>& uniqueDirectories,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  bool debugDirectories, std::string const& language)
-{
-  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
-    std::vector<std::string> entryDirectories;
-    cmSystemTools::ExpandListArgument(entry->Evaluate(tgt->GetLocalGenerator(),
-                                                      config, false, tgt,
-                                                      dagChecker, language),
-                                      entryDirectories);
-
-    cmLinkImplItem const& item = entry->LinkImplItem;
+void processLinkDirectories(cmGeneratorTarget const* tgt,
+                            std::vector<EvaluatedTargetPropertyEntry>& entries,
+                            std::vector<BT<std::string>>& directories,
+                            std::unordered_set<std::string>& uniqueDirectories,
+                            bool debugDirectories)
+{
+  for (EvaluatedTargetPropertyEntry& entry : entries) {
+    cmLinkImplItem const& item = entry.LinkImplItem;
     std::string const& targetName = item.AsStr();
 
     std::string usedDirectories;
-    for (std::string& entryDirectory : entryDirectories) {
+    for (std::string& entryDirectory : entry.Values) {
       if (!cmSystemTools::FileIsFullPath(entryDirectory)) {
         std::ostringstream e;
         bool noMessage = false;
@@ -3511,7 +3467,7 @@ void processLinkDirectories(
         MessageType::LOG,
         std::string("Used link directories for target ") + tgt->GetName() +
           ":\n" + usedDirectories,
-        entry->GetBacktrace());
+        entry.Backtrace);
     }
   }
 }
@@ -3553,39 +3509,19 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkDirectories(
     this->DebugLinkDirectoriesDone = true;
   }
 
-  processLinkDirectories(this, this->LinkDirectoriesEntries, result,
-                         uniqueDirectories, &dagChecker, config,
-                         debugDirectories, language);
-
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*>
-    linkInterfaceLinkDirectoriesEntries;
+  std::vector<EvaluatedTargetPropertyEntry> entries =
+    EvaluateTargetPropertyEntries(this, config, language, &dagChecker,
+                                  this->LinkDirectoriesEntries);
 
-  AddInterfaceEntries(this, config, "INTERFACE_LINK_DIRECTORIES",
-                      linkInterfaceLinkDirectoriesEntries);
+  AddInterfaceEntries(this, config, "INTERFACE_LINK_DIRECTORIES", language,
+                      &dagChecker, entries);
 
-  processLinkDirectories(this, linkInterfaceLinkDirectoriesEntries, result,
-                         uniqueDirectories, &dagChecker, config,
-                         debugDirectories, language);
+  processLinkDirectories(this, entries, result, uniqueDirectories,
+                         debugDirectories);
 
-  cmDeleteAll(linkInterfaceLinkDirectoriesEntries);
   return result;
 }
 
-namespace {
-void processLinkDepends(
-  cmGeneratorTarget const* tgt,
-  const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<BT<std::string>>& options,
-  std::unordered_set<std::string>& uniqueOptions,
-  cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
-  std::string const& language)
-{
-  processOptionsInternal(tgt, entries, options, uniqueOptions, dagChecker,
-                         config, false, "link depends", language,
-                         OptionsParse::None);
-}
-}
-
 void cmGeneratorTarget::GetLinkDepends(std::vector<std::string>& result,
                                        const std::string& config,
                                        const std::string& language) const
@@ -3601,24 +3537,27 @@ std::vector<BT<std::string>> cmGeneratorTarget::GetLinkDepends(
   std::string const& config, std::string const& language) const
 {
   std::vector<BT<std::string>> result;
-  std::vector<cmGeneratorTarget::TargetPropertyEntry*> linkDependsEntries;
   std::unordered_set<std::string> uniqueOptions;
   cmGeneratorExpressionDAGChecker dagChecker(this, "LINK_DEPENDS", nullptr,
                                              nullptr);
 
+  std::vector<EvaluatedTargetPropertyEntry> entries;
   if (const char* linkDepends = this->GetProperty("LINK_DEPENDS")) {
     std::vector<std::string> depends;
     cmSystemTools::ExpandListArgument(linkDepends, depends);
     for (const auto& depend : depends) {
-      linkDependsEntries.push_back(CreateTargetPropertyEntry(depend));
+      std::unique_ptr<TargetPropertyEntry> entry(
+        CreateTargetPropertyEntry(depend));
+      entries.emplace_back(EvaluateTargetPropertyEntry(
+        this, config, language, &dagChecker, entry.get()));
     }
   }
-  AddInterfaceEntries(this, config, "INTERFACE_LINK_DEPENDS",
-                      linkDependsEntries);
-  processLinkDepends(this, linkDependsEntries, result, uniqueOptions,
-                     &dagChecker, config, language);
+  AddInterfaceEntries(this, config, "INTERFACE_LINK_DEPENDS", language,
+                      &dagChecker, entries);
+
+  processOptions(this, entries, result, uniqueOptions, false, "link depends",
+                 OptionsParse::None);
 
-  cmDeleteAll(linkDependsEntries);
   return result;
 }