cmMakefile: Add configurations getter with empty configuration default

Source/cmComputeTargetDepends.cxx

@@ -197,11 +197,8 @@ void cmComputeTargetDepends::CollectTargetDepends(int depender_index)
   {
     std::set<cmLinkItem> emitted;
 
-    std::vector<std::string> configs;
-    depender->Makefile->GetConfigurations(configs);
-    if (configs.empty()) {
-      configs.emplace_back();
-    }
+    std::vector<std::string> const& configs =
+      depender->Makefile->GetGeneratorConfigs();
     for (std::string const& it : configs) {
       std::vector<cmSourceFile const*> objectFiles;
       depender->GetExternalObjects(objectFiles, it);

Source/cmFileAPICodemodel.cxx

@@ -423,20 +423,17 @@ Json::Value Codemodel::DumpPaths()
 
 Json::Value Codemodel::DumpConfigurations()
 {
-  std::vector<std::string> configs;
+  Json::Value configurations = Json::arrayValue;
   cmGlobalGenerator* gg =
     this->FileAPI.GetCMakeInstance()->GetGlobalGenerator();
   auto makefiles = gg->GetMakefiles();
   if (!makefiles.empty()) {
-    makefiles[0]->GetConfigurations(configs);
-    if (configs.empty()) {
-      configs.emplace_back();
+    std::vector<std::string> const& configs =
+      makefiles[0]->GetGeneratorConfigs();
+    for (std::string const& config : configs) {
+      configurations.append(this->DumpConfiguration(config));
     }
   }
-  Json::Value configurations = Json::arrayValue;
-  for (std::string const& config : configs) {
-    configurations.append(this->DumpConfiguration(config));
-  }
   return configurations;
 }
 

Source/cmGeneratorTarget.cxx

@@ -786,11 +786,8 @@ void cmGeneratorTarget::ComputeObjectMapping()
     return;
   }
 
-  std::vector<std::string> configs;
-  this->Makefile->GetConfigurations(configs);
-  if (configs.empty()) {
-    configs.emplace_back();
-  }
+  std::vector<std::string> const& configs =
+    this->Makefile->GetGeneratorConfigs();
   for (std::string const& c : configs) {
     std::vector<cmSourceFile const*> sourceFiles;
     this->GetObjectSources(sourceFiles, c);
@@ -2634,12 +2631,9 @@ cmTargetTraceDependencies::cmTargetTraceDependencies(cmGeneratorTarget* target)
 
   // Queue all the source files already specified for the target.
   if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
-    std::vector<std::string> configs;
-    this->Makefile->GetConfigurations(configs);
-    if (configs.empty()) {
-      configs.emplace_back();
-    }
     std::set<cmSourceFile*> emitted;
+    std::vector<std::string> const& configs =
+      this->Makefile->GetGeneratorConfigs();
     for (std::string const& c : configs) {
       std::vector<cmSourceFile*> sources;
       this->GeneratorTarget->GetSourceFiles(sources, c);
@@ -2825,12 +2819,9 @@ void cmTargetTraceDependencies::CheckCustomCommand(cmCustomCommand const& cc)
   }
 
   // Queue the custom command dependencies.
-  std::vector<std::string> configs;
   std::set<std::string> emitted;
-  this->Makefile->GetConfigurations(configs);
-  if (configs.empty()) {
-    configs.emplace_back();
-  }
+  std::vector<std::string> const& configs =
+    this->Makefile->GetGeneratorConfigs();
   for (std::string const& conf : configs) {
     this->FollowCommandDepends(cc, conf, emitted);
   }
@@ -6077,11 +6068,8 @@ const cmLinkImplementation* cmGeneratorTarget::GetLinkImplementation(
 bool cmGeneratorTarget::GetConfigCommonSourceFiles(
   std::vector<cmSourceFile*>& files) const
 {
-  std::vector<std::string> configs;
-  this->Makefile->GetConfigurations(configs);
-  if (configs.empty()) {
-    configs.emplace_back();
-  }
+  std::vector<std::string> const& configs =
+    this->Makefile->GetGeneratorConfigs();
 
   std::vector<std::string>::const_iterator it = configs.begin();
   const std::string& firstConfig = *it;

Source/cmGlobalGenerator.cxx

@@ -337,12 +337,8 @@ bool cmGlobalGenerator::CheckTargetsForType() const
     for (cmGeneratorTarget* target : generator->GetGeneratorTargets()) {
       if (target->GetType() == cmStateEnums::EXECUTABLE &&
           target->GetPropertyAsBool("WIN32_EXECUTABLE")) {
-        std::vector<std::string> configs;
-        target->Makefile->GetConfigurations(configs);
-        if (configs.empty()) {
-          configs.emplace_back();
-        }
-
+        std::vector<std::string> const& configs =
+          target->Makefile->GetGeneratorConfigs();
         for (std::string const& config : configs) {
           if (target->GetLinkerLanguage(config) == "Swift") {
             this->GetCMakeInstance()->IssueMessage(
@@ -2963,11 +2959,8 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
     // List the source files with any per-source labels.
     fout << "# Source files and their labels\n";
     std::vector<cmSourceFile*> sources;
-    std::vector<std::string> configs;
-    target->Target->GetMakefile()->GetConfigurations(configs);
-    if (configs.empty()) {
-      configs.emplace_back();
-    }
+    std::vector<std::string> const& configs =
+      target->Target->GetMakefile()->GetGeneratorConfigs();
     for (std::string const& c : configs) {
       target->GetSourceFiles(sources, c);
     }

Source/cmLocalGenerator.cxx

@@ -257,11 +257,8 @@ static void MoveSystemIncludesToEnd(std::vector<BT<std::string>>& includeDirs,
 
 void cmLocalGenerator::TraceDependencies()
 {
-  std::vector<std::string> configs;
-  this->Makefile->GetConfigurations(configs);
-  if (configs.empty()) {
-    configs.emplace_back();
-  }
+  std::vector<std::string> const& configs =
+    this->Makefile->GetGeneratorConfigs();
   for (std::string const& c : configs) {
     this->GlobalGenerator->CreateEvaluationSourceFiles(c);
   }

Source/cmMakefile.cxx

@@ -3057,6 +3057,16 @@ std::string cmMakefile::GetConfigurations(std::vector<std::string>& configs,
   return buildType;
 }
 
+std::vector<std::string> cmMakefile::GetGeneratorConfigs() const
+{
+  std::vector<std::string> configs;
+  GetConfigurations(configs);
+  if (configs.empty()) {
+    configs.emplace_back();
+  }
+  return configs;
+}
+
 bool cmMakefile::IsFunctionBlocked(const cmListFileFunction& lff,
                                    cmExecutionStatus& status)
 {

Source/cmMakefile.h

@@ -292,6 +292,9 @@ public:
   std::string GetConfigurations(std::vector<std::string>& configs,
                                 bool single = true) const;
 
+  /** Get the configurations for dependency checking.  */
+  std::vector<std::string> GetGeneratorConfigs() const;
+
   /**
    * Set the name of the library.
    */