clang-tidy: modernize-use-auto

Set the MinTypeNameLength option to an impossibly high value in order
to limit the diagnostics to iterators.  Leave new expressions and cast
expressions for later.

.clang-tidy

@@ -12,7 +12,6 @@ misc-*,\
 modernize-*,\
 -modernize-avoid-c-arrays,\
 -modernize-deprecated-headers,\
--modernize-use-auto,\
 -modernize-use-nodiscard,\
 -modernize-use-noexcept,\
 -modernize-use-transparent-functors,\
@@ -33,4 +32,6 @@ CheckOptions:
     value: '1'
   - key:   modernize-use-equals-default.IgnoreMacros
     value: '0'
+  - key:   modernize-use-auto.MinTypeNameLength
+    value: '80'
 ...

Source/CPack/IFW/cmCPackIFWGenerator.cxx

@@ -77,8 +77,7 @@ int cmCPackIFWGenerator::PackageFiles()
 
     if (!this->OnlineOnly && !this->DownloadedPackages.empty()) {
       ifwCmd.emplace_back("-i");
-      std::set<cmCPackIFWPackage*>::iterator it =
-        this->DownloadedPackages.begin();
+      auto it = this->DownloadedPackages.begin();
       ifwArg = (*it)->Name;
       ++it;
       while (it != this->DownloadedPackages.end()) {
@@ -137,8 +136,7 @@ int cmCPackIFWGenerator::PackageFiles()
 
     if (!this->Installer.Resources.empty()) {
       ifwCmd.emplace_back("-r");
-      std::vector<std::string>::iterator it =
-        this->Installer.Resources.begin();
+      auto it = this->Installer.Resources.begin();
       std::string path = this->toplevel + "/resources/";
       ifwArg = path + *it;
       ++it;
@@ -180,8 +178,7 @@ int cmCPackIFWGenerator::PackageFiles()
     } else if (!this->DownloadedPackages.empty() &&
                !this->Installer.RemoteRepositories.empty()) {
       ifwCmd.emplace_back("-e");
-      std::set<cmCPackIFWPackage*>::iterator it =
-        this->DownloadedPackages.begin();
+      auto it = this->DownloadedPackages.begin();
       ifwArg = (*it)->Name;
       ++it;
       while (it != this->DownloadedPackages.end()) {
@@ -193,14 +190,13 @@ int cmCPackIFWGenerator::PackageFiles()
       ifwCmd.emplace_back("-i");
       ifwArg.clear();
       // Binary
-      std::set<cmCPackIFWPackage*>::iterator bit =
-        this->BinaryPackages.begin();
+      auto bit = this->BinaryPackages.begin();
       while (bit != this->BinaryPackages.end()) {
         ifwArg += (*bit)->Name + ",";
         ++bit;
       }
       // Depend
-      DependenceMap::iterator it = this->DependentPackages.begin();
+      auto it = this->DependentPackages.begin();
       ifwArg += it->second.Name;
       ++it;
       while (it != this->DependentPackages.end()) {
@@ -410,7 +406,7 @@ std::string cmCPackIFWGenerator::GetComponentInstallDirNameSuffix(
 cmCPackComponent* cmCPackIFWGenerator::GetComponent(
   const std::string& projectName, const std::string& componentName)
 {
-  ComponentsMap::iterator cit = this->Components.find(componentName);
+  auto cit = this->Components.find(componentName);
   if (cit != this->Components.end()) {
     return &(cit->second);
   }
@@ -422,7 +418,7 @@ cmCPackComponent* cmCPackIFWGenerator::GetComponent(
   }
 
   std::string name = this->GetComponentPackageName(component);
-  PackagesMap::iterator pit = this->Packages.find(name);
+  auto pit = this->Packages.find(name);
   if (pit != this->Packages.end()) {
     return component;
   }
@@ -462,7 +458,7 @@ cmCPackComponentGroup* cmCPackIFWGenerator::GetComponentGroup(
   }
 
   std::string name = this->GetGroupPackageName(group);
-  PackagesMap::iterator pit = this->Packages.find(name);
+  auto pit = this->Packages.find(name);
   if (pit != this->Packages.end()) {
     return group;
   }
@@ -593,23 +589,21 @@ std::string cmCPackIFWGenerator::GetComponentPackageName(
 cmCPackIFWPackage* cmCPackIFWGenerator::GetGroupPackage(
   cmCPackComponentGroup* group) const
 {
-  std::map<cmCPackComponentGroup*, cmCPackIFWPackage*>::const_iterator pit =
-    this->GroupPackages.find(group);
+  auto pit = this->GroupPackages.find(group);
   return pit != this->GroupPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWPackage* cmCPackIFWGenerator::GetComponentPackage(
   cmCPackComponent* component) const
 {
-  std::map<cmCPackComponent*, cmCPackIFWPackage*>::const_iterator pit =
-    this->ComponentPackages.find(component);
+  auto pit = this->ComponentPackages.find(component);
   return pit != this->ComponentPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWRepository* cmCPackIFWGenerator::GetRepository(
   const std::string& repositoryName)
 {
-  RepositoriesMap::iterator rit = this->Repositories.find(repositoryName);
+  auto rit = this->Repositories.find(repositoryName);
   if (rit != this->Repositories.end()) {
     return &(rit->second);
   }

Source/CPack/IFW/cmCPackIFWPackage.cxx

@@ -620,7 +620,7 @@ void cmCPackIFWPackage::GeneratePackageFile()
   // Write dependencies
   if (!compDepSet.empty()) {
     std::ostringstream dependencies;
-    std::set<DependenceStruct>::iterator it = compDepSet.begin();
+    auto it = compDepSet.begin();
     dependencies << it->NameWithCompare();
     ++it;
     while (it != compDepSet.end()) {
@@ -638,7 +638,7 @@ void cmCPackIFWPackage::GeneratePackageFile()
   // Write automatic dependency on
   if (!compAutoDepSet.empty()) {
     std::ostringstream dependencies;
-    std::set<DependenceStruct>::iterator it = compAutoDepSet.begin();
+    auto it = compAutoDepSet.begin();
     dependencies << it->NameWithCompare();
     ++it;
     while (it != compAutoDepSet.end()) {
@@ -674,7 +674,7 @@ void cmCPackIFWPackage::GeneratePackageFile()
   // Replaces
   if (!this->Replaces.empty()) {
     std::ostringstream replaces;
-    std::vector<std::string>::iterator it = this->Replaces.begin();
+    auto it = this->Replaces.begin();
     replaces << *it;
     ++it;
     while (it != this->Replaces.end()) {

Source/CPack/cmCPackGeneratorFactory.cxx

@@ -158,8 +158,7 @@ cmCPackGenerator* cmCPackGeneratorFactory::NewGenerator(
 cmCPackGenerator* cmCPackGeneratorFactory::NewGeneratorInternal(
   const std::string& name)
 {
-  cmCPackGeneratorFactory::t_GeneratorCreatorsMap::iterator it =
-    this->GeneratorCreators.find(name);
+  auto it = this->GeneratorCreators.find(name);
   if (it == this->GeneratorCreators.end()) {
     return nullptr;
   }

Source/CPack/cmCPackRPMGenerator.cxx

@@ -184,8 +184,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
     // The default behavior is to have one package by component group
     // unless CPACK_COMPONENTS_IGNORE_GROUP is specified.
     if (!ignoreGroup) {
-      std::map<std::string, cmCPackComponentGroup>::iterator mainCompGIt =
-        this->ComponentGroups.end();
+      auto mainCompGIt = this->ComponentGroups.end();
 
       std::map<std::string, cmCPackComponentGroup>::iterator compGIt;
       for (compGIt = this->ComponentGroups.begin();
@@ -206,8 +205,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
         retval &= PackageOnePack(initialTopLevel, compGIt->first);
       }
       // Handle Orphan components (components not belonging to any groups)
-      std::map<std::string, cmCPackComponent>::iterator mainCompIt =
-        this->Components.end();
+      auto mainCompIt = this->Components.end();
       std::map<std::string, cmCPackComponent>::iterator compIt;
       for (compIt = this->Components.begin(); compIt != this->Components.end();
            ++compIt) {
@@ -251,8 +249,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
     // CPACK_COMPONENTS_IGNORE_GROUPS is set
     // We build 1 package per component
     else {
-      std::map<std::string, cmCPackComponent>::iterator mainCompIt =
-        this->Components.end();
+      auto mainCompIt = this->Components.end();
 
       std::map<std::string, cmCPackComponent>::iterator compIt;
       for (compIt = this->Components.begin(); compIt != this->Components.end();

Source/CTest/cmCTestCoverageHandler.cxx

@@ -1830,9 +1830,8 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
     return 0;
   }
   std::map<std::string, std::string> fileMap;
-  std::vector<std::string>::iterator fp = filesFullPath.begin();
-  for (std::vector<std::string>::iterator f = files.begin(); f != files.end();
-       ++f, ++fp) {
+  auto fp = filesFullPath.begin();
+  for (auto f = files.begin(); f != files.end(); ++f, ++fp) {
     fileMap[*f] = *fp;
   }
 
@@ -1870,7 +1869,7 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
         this->StartCoverageLogXML(covLogXML);
         count++; // move on one
       }
-      std::map<std::string, std::string>::iterator i = fileMap.find(file);
+      auto i = fileMap.find(file);
       // if the file should be covered write out the header for that file
       if (i != fileMap.end()) {
         // we have a new file so count it in the output
@@ -2202,7 +2201,7 @@ bool cmCTestCoverageHandler::ParseBullsEyeCovsrcLine(
 
 int cmCTestCoverageHandler::GetLabelId(std::string const& label)
 {
-  LabelIdMapType::iterator i = this->LabelIdMap.find(label);
+  auto i = this->LabelIdMap.find(label);
   if (i == this->LabelIdMap.end()) {
     int n = int(this->Labels.size());
     this->Labels.push_back(label);
@@ -2273,7 +2272,7 @@ void cmCTestCoverageHandler::LoadLabels(const char* dir)
 void cmCTestCoverageHandler::WriteXMLLabels(cmXMLWriter& xml,
                                             std::string const& source)
 {
-  LabelMapType::const_iterator li = this->SourceLabels.find(source);
+  auto li = this->SourceLabels.find(source);
   if (li != this->SourceLabels.end() && !li->second.empty()) {
     xml.StartElement("Labels");
     for (auto const& ls : li->second) {
@@ -2316,7 +2315,7 @@ bool cmCTestCoverageHandler::IsFilteredOut(std::string const& source)
   // The source is filtered out if it does not have any labels in
   // common with the filter set.
   std::string shortSrc = this->CTest->GetShortPathToFile(source.c_str());
-  LabelMapType::const_iterator li = this->SourceLabels.find(shortSrc);
+  auto li = this->SourceLabels.find(shortSrc);
   if (li != this->SourceLabels.end()) {
     return !this->IntersectsFilter(li->second);
   }

Source/CTest/cmCTestGenericHandler.cxx

@@ -23,8 +23,7 @@ cmCTestGenericHandler::~cmCTestGenericHandler() = default;
 void cmCTestGenericHandler::SetOption(const std::string& op, const char* value)
 {
   if (!value) {
-    cmCTestGenericHandler::t_StringToString::iterator remit =
-      this->Options.find(op);
+    auto remit = this->Options.find(op);
     if (remit != this->Options.end()) {
       this->Options.erase(remit);
     }
@@ -39,8 +38,7 @@ void cmCTestGenericHandler::SetPersistentOption(const std::string& op,
 {
   this->SetOption(op, value);
   if (!value) {
-    cmCTestGenericHandler::t_StringToString::iterator remit =
-      this->PersistentOptions.find(op);
+    auto remit = this->PersistentOptions.find(op);
     if (remit != this->PersistentOptions.end()) {
       this->PersistentOptions.erase(remit);
     }
@@ -62,8 +60,7 @@ void cmCTestGenericHandler::Initialize()
 
 const char* cmCTestGenericHandler::GetOption(const std::string& op)
 {
-  cmCTestGenericHandler::t_StringToString::iterator remit =
-    this->Options.find(op);
+  auto remit = this->Options.find(op);
   if (remit == this->Options.end()) {
     return nullptr;
   }

Source/CTest/cmCTestP4.cxx

@@ -146,8 +146,7 @@ private:
 
 cmCTestP4::User cmCTestP4::GetUserData(const std::string& username)
 {
-  std::map<std::string, cmCTestP4::User>::const_iterator it =
-    Users.find(username);
+  auto it = Users.find(username);
 
   if (it == Users.end()) {
     std::vector<char const*> p4_users;

Source/CTest/cmCTestRunTest.cxx

@@ -571,8 +571,7 @@ bool cmCTestRunTest::StartTest(size_t completed, size_t total)
 void cmCTestRunTest::ComputeArguments()
 {
   this->Arguments.clear(); // reset because this might be a rerun
-  std::vector<std::string>::const_iterator j =
-    this->TestProperties->Args.begin();
+  auto j = this->TestProperties->Args.begin();
   ++j; // skip test name
   // find the test executable
   if (this->TestHandler->MemCheck) {

Source/CTest/cmCTestSVN.cxx

@@ -169,7 +169,7 @@ void cmCTestSVN::GuessBase(SVNInfo& svninfo,
        slash = svninfo.URL.find('/', slash + 1)) {
     // If the URL suffix is a prefix of at least one path then it is the base.
     std::string base = cmCTest::DecodeURL(svninfo.URL.substr(slash));
-    for (std::vector<Change>::const_iterator ci = changes.begin();
+    for (auto ci = changes.begin();
          svninfo.Base.empty() && ci != changes.end(); ++ci) {
       if (cmCTestSVNPathStarts(ci->Path, base)) {
         svninfo.Base = base;

Source/CTest/cmCTestTestHandler.cxx

@@ -690,8 +690,7 @@ void cmCTestTestHandler::PrintLabelOrSubprojectSummary(bool doSubProject)
     for (std::string const& l : p.Labels) {
       // first check to see if the current label is a subproject label
       bool isSubprojectLabel = false;
-      std::vector<std::string>::iterator subproject =
-        std::find(subprojects.begin(), subprojects.end(), l);
+      auto subproject = std::find(subprojects.begin(), subprojects.end(), l);
       if (subproject != subprojects.end()) {
         isSubprojectLabel = true;
       }
@@ -945,8 +944,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
   FixtureDependencies fixtureSetups;
   FixtureDependencies fixtureCleanups;
 
-  for (ListOfTests::const_iterator it = this->TestList.begin();
-       it != this->TestList.end(); ++it) {
+  for (auto it = this->TestList.begin(); it != this->TestList.end(); ++it) {
     const cmCTestTestProperties& p = *it;
 
     for (std::string const& deps : p.FixturesSetup) {
@@ -1007,8 +1005,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
       // cleanup tests depend on this test case later.
       std::pair<FixtureDepsIterator, FixtureDepsIterator> setupRange =
         fixtureSetups.equal_range(requiredFixtureName);
-      for (FixtureDepsIterator sIt = setupRange.first;
-           sIt != setupRange.second; ++sIt) {
+      for (auto sIt = setupRange.first; sIt != setupRange.second; ++sIt) {
         const std::string& setupTestName = sIt->second->Name;
         tests[i].RequireSuccessDepends.insert(setupTestName);
         if (!cmContains(tests[i].Depends, setupTestName)) {
@@ -1031,8 +1028,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
           !excludeSetupRegex.find(requiredFixtureName)) {
         std::pair<FixtureDepsIterator, FixtureDepsIterator> fixtureRange =
           fixtureSetups.equal_range(requiredFixtureName);
-        for (FixtureDepsIterator it = fixtureRange.first;
-             it != fixtureRange.second; ++it) {
+        for (auto it = fixtureRange.first; it != fixtureRange.second; ++it) {
           ListOfTests::const_iterator lotIt = it->second;
           const cmCTestTestProperties& p = *lotIt;
 
@@ -1063,8 +1059,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
           !excludeCleanupRegex.find(requiredFixtureName)) {
         std::pair<FixtureDepsIterator, FixtureDepsIterator> fixtureRange =
           fixtureCleanups.equal_range(requiredFixtureName);
-        for (FixtureDepsIterator it = fixtureRange.first;
-             it != fixtureRange.second; ++it) {
+        for (auto it = fixtureRange.first; it != fixtureRange.second; ++it) {
           ListOfTests::const_iterator lotIt = it->second;
           const cmCTestTestProperties& p = *lotIt;
 
@@ -1112,8 +1107,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
       // This cleanup test could be part of the original test list that was
       // passed in. It is then possible that no other test requires the
       // fIt fixture, so we have to check for this.
-      std::map<std::string, std::vector<size_t>>::const_iterator cIt =
-        fixtureRequirements.find(fixture);
+      auto cIt = fixtureRequirements.find(fixture);
       if (cIt != fixtureRequirements.end()) {
         const std::vector<size_t>& indices = cIt->second;
         for (size_t index : indices) {
@@ -1819,8 +1813,7 @@ void cmCTestTestHandler::ExpandTestsToRunInformation(size_t numTests)
   std::sort(this->TestsToRun.begin(), this->TestsToRun.end(),
             std::less<int>());
   // remove duplicates
-  std::vector<int>::iterator new_end =
-    std::unique(this->TestsToRun.begin(), this->TestsToRun.end());
+  auto new_end = std::unique(this->TestsToRun.begin(), this->TestsToRun.end());
   this->TestsToRun.erase(new_end, this->TestsToRun.end());
 }
 
@@ -2257,8 +2250,7 @@ bool cmCTestTestHandler::SetTestsProperties(
             // sort the array
             std::sort(rt.Labels.begin(), rt.Labels.end());
             // remove duplicates
-            std::vector<std::string>::iterator new_end =
-              std::unique(rt.Labels.begin(), rt.Labels.end());
+            auto new_end = std::unique(rt.Labels.begin(), rt.Labels.end());
             rt.Labels.erase(new_end, rt.Labels.end());
           }
           if (key == "MEASUREMENT") {
@@ -2337,8 +2329,7 @@ bool cmCTestTestHandler::SetDirectoryProperties(
           // sort the array
           std::sort(rt.Labels.begin(), rt.Labels.end());
           // remove duplicates
-          std::vector<std::string>::iterator new_end =
-            std::unique(rt.Labels.begin(), rt.Labels.end());
+          auto new_end = std::unique(rt.Labels.begin(), rt.Labels.end());
           rt.Labels.erase(new_end, rt.Labels.end());
         }
       }

Source/CTest/cmParseCacheCoverage.cxx

@@ -47,8 +47,7 @@ void cmParseCacheCoverage::RemoveUnCoveredFiles()
 {
   // loop over the coverage data computed and remove all files
   // that only have -1 or 0 for the lines.
-  cmCTestCoverageHandlerContainer::TotalCoverageMap::iterator ci =
-    this->Coverage.TotalCoverage.begin();
+  auto ci = this->Coverage.TotalCoverage.begin();
   while (ci != this->Coverage.TotalCoverage.end()) {
     cmCTestCoverageHandlerContainer::SingleFileCoverageVector& v = ci->second;
     bool nothing = true;

Source/CTest/cmParseMumpsCoverage.cxx

@@ -123,8 +123,7 @@ bool cmParseMumpsCoverage::LoadPackages(const char* d)
 bool cmParseMumpsCoverage::FindMumpsFile(std::string const& routine,
                                          std::string& filepath)
 {
-  std::map<std::string, std::string>::iterator i =
-    this->RoutineToDirectory.find(routine);
+  auto i = this->RoutineToDirectory.find(routine);
   if (i != this->RoutineToDirectory.end()) {
     filepath = i->second;
     return true;

Source/QtDialog/FirstConfigure.cxx

@@ -107,8 +107,7 @@ void StartCompilerSetup::setGenerators(
         ->GeneratorDefaultPlatform[QString::fromLocal8Bit(gen.name.c_str())] =
         QString::fromLocal8Bit(gen.defaultPlatform.c_str());
 
-      std::vector<std::string>::const_iterator platformIt =
-        gen.supportedPlatforms.cbegin();
+      auto platformIt = gen.supportedPlatforms.cbegin();
       while (platformIt != gen.supportedPlatforms.cend()) {
 
         this->GeneratorSupportedPlatforms.insert(

Source/cmAddExecutableCommand.cxx

@@ -20,7 +20,7 @@ bool cmAddExecutableCommand(std::vector<std::string> const& args,
   }
 
   cmMakefile& mf = status.GetMakefile();
-  std::vector<std::string>::const_iterator s = args.begin();
+  auto s = args.begin();
 
   std::string const& exename = *s;
 

Source/cmAddLibraryCommand.cxx

@@ -34,7 +34,7 @@ bool cmAddLibraryCommand(std::vector<std::string> const& args,
   bool importTarget = false;
   bool importGlobal = false;
 
-  std::vector<std::string>::const_iterator s = args.begin();
+  auto s = args.begin();
 
   std::string const& libName = *s;
 

Source/cmAlgorithms.h

@@ -165,14 +165,14 @@ typename Range::const_iterator cmRemoveIndices(Range& r, InputRange const& rem)
 {
   typename InputRange::const_iterator remIt = rem.begin();
   typename InputRange::const_iterator remEnd = rem.end();
-  const typename Range::iterator rangeEnd = r.end();
+  const auto rangeEnd = r.end();
   if (remIt == remEnd) {
     return rangeEnd;
   }
 
-  typename Range::iterator writer = r.begin();
+  auto writer = r.begin();
   std::advance(writer, *remIt);
-  typename Range::iterator pivot = writer;
+  auto pivot = writer;
   typename InputRange::value_type prevRem = *remIt;
   ++remIt;
   size_t count = 1;

Source/cmCPluginAPI.cxx

@@ -531,7 +531,7 @@ void CCONV* cmGetSource(void* arg, const char* name)
   cmMakefile* mf = static_cast<cmMakefile*>(arg);
   if (cmSourceFile* rsf = mf->GetSource(name)) {
     // Lookup the proxy source file object for this source.
-    cmCPluginAPISourceFileMap::iterator i = cmCPluginAPISourceFiles.find(rsf);
+    auto i = cmCPluginAPISourceFiles.find(rsf);
     if (i == cmCPluginAPISourceFiles.end()) {
       // Create a proxy source file object for this source.
       cmCPluginAPISourceFile* sf = new cmCPluginAPISourceFile;

Source/cmCTest.cxx

@@ -1483,8 +1483,7 @@ std::vector<std::string> cmCTest::GetLabelsForSubprojects()
   // sort the array
   std::sort(subprojects.begin(), subprojects.end());
   // remove duplicates
-  std::vector<std::string>::iterator new_end =
-    std::unique(subprojects.begin(), subprojects.end());
+  auto new_end = std::unique(subprojects.begin(), subprojects.end());
   subprojects.erase(new_end, subprojects.end());
 
   return subprojects;

Source/cmCacheManager.cxx

@@ -480,7 +480,7 @@ void cmCacheManager::OutputNewlineTruncationWarning(std::ostream& fout,
 
 void cmCacheManager::RemoveCacheEntry(const std::string& key)
 {
-  CacheEntryMap::iterator i = this->Cache.find(key);
+  auto i = this->Cache.find(key);
   if (i != this->Cache.end()) {
     this->Cache.erase(i);
   }
@@ -489,7 +489,7 @@ void cmCacheManager::RemoveCacheEntry(const std::string& key)
 cmCacheManager::CacheEntry* cmCacheManager::GetCacheEntry(
   const std::string& key)
 {
-  CacheEntryMap::iterator i = this->Cache.find(key);
+  auto i = this->Cache.find(key);
   if (i != this->Cache.end()) {
     return &i->second;
   }
@@ -504,7 +504,7 @@ cmCacheManager::CacheIterator cmCacheManager::GetCacheIterator(const char* key)
 const std::string* cmCacheManager::GetInitializedCacheValue(
   const std::string& key) const
 {
-  CacheEntryMap::const_iterator i = this->Cache.find(key);
+  auto i = this->Cache.find(key);
   if (i != this->Cache.end() && i->second.Initialized) {
     return &i->second.Value;
   }

Source/cmCommonTargetGenerator.cxx

@@ -96,7 +96,7 @@ void cmCommonTargetGenerator::AppendFortranFormatFlags(
 
 std::string cmCommonTargetGenerator::GetFlags(const std::string& l)
 {
-  ByLanguageMap::iterator i = this->FlagsByLanguage.find(l);
+  auto i = this->FlagsByLanguage.find(l);
   if (i == this->FlagsByLanguage.end()) {
     std::string flags;
 
@@ -111,7 +111,7 @@ std::string cmCommonTargetGenerator::GetFlags(const std::string& l)
 
 std::string cmCommonTargetGenerator::GetDefines(const std::string& l)
 {
-  ByLanguageMap::iterator i = this->DefinesByLanguage.find(l);
+  auto i = this->DefinesByLanguage.find(l);
   if (i == this->DefinesByLanguage.end()) {
     std::set<std::string> defines;
     this->LocalCommonGenerator->GetTargetDefines(this->GeneratorTarget,
@@ -128,7 +128,7 @@ std::string cmCommonTargetGenerator::GetDefines(const std::string& l)
 
 std::string cmCommonTargetGenerator::GetIncludes(std::string const& l)
 {
-  ByLanguageMap::iterator i = this->IncludesByLanguage.find(l);
+  auto i = this->IncludesByLanguage.find(l);
   if (i == this->IncludesByLanguage.end()) {
     std::string includes;
     this->AddIncludeFlags(includes, l);

Source/cmComputeLinkDepends.cxx

@@ -283,8 +283,7 @@ std::map<cmLinkItem, int>::iterator cmComputeLinkDepends::AllocateLinkEntry(
 {
   std::map<cmLinkItem, int>::value_type index_entry(
     item, static_cast<int>(this->EntryList.size()));
-  std::map<cmLinkItem, int>::iterator lei =
-    this->LinkEntryIndex.insert(index_entry).first;
+  auto lei = this->LinkEntryIndex.insert(index_entry).first;
   this->EntryList.emplace_back();
   this->InferredDependSets.push_back(nullptr);
   this->EntryConstraintGraph.emplace_back();
@@ -294,7 +293,7 @@ std::map<cmLinkItem, int>::iterator cmComputeLinkDepends::AllocateLinkEntry(
 int cmComputeLinkDepends::AddLinkEntry(cmLinkItem const& item)
 {
   // Check if the item entry has already been added.
-  std::map<cmLinkItem, int>::iterator lei = this->LinkEntryIndex.find(item);
+  auto lei = this->LinkEntryIndex.find(item);
   if (lei != this->LinkEntryIndex.end()) {
     // Yes.  We do not need to follow the item's dependencies again.
     return lei->second;
@@ -394,8 +393,7 @@ void cmComputeLinkDepends::QueueSharedDependencies(
 void cmComputeLinkDepends::HandleSharedDependency(SharedDepEntry const& dep)
 {
   // Check if the target already has an entry.
-  std::map<cmLinkItem, int>::iterator lei =
-    this->LinkEntryIndex.find(dep.Item);
+  auto lei = this->LinkEntryIndex.find(dep.Item);
   if (lei == this->LinkEntryIndex.end()) {
     // Allocate a spot for the item entry.
     lei = this->AllocateLinkEntry(dep.Item);
@@ -719,8 +717,7 @@ void cmComputeLinkDepends::VisitEntry(int index)
   // This entry has now been seen.  Update its component.
   bool completed = false;
   int component = this->CCG->GetComponentMap()[index];
-  std::map<int, PendingComponent>::iterator mi =
-    this->PendingComponents.find(this->ComponentOrder[component]);
+  auto mi = this->PendingComponents.find(this->ComponentOrder[component]);
   if (mi != this->PendingComponents.end()) {
     // The entry is in an already pending component.
     PendingComponent& pc = mi->second;

Source/cmComputeLinkInformation.cxx

@@ -1332,8 +1332,7 @@ void cmComputeLinkInformation::HandleBadFullItem(std::string const& item,
                                                  std::string const& file)
 {
   // Do not depend on things that do not exist.
-  std::vector<std::string>::iterator i =
-    std::find(this->Depends.begin(), this->Depends.end(), item);
+  auto i = std::find(this->Depends.begin(), this->Depends.end(), item);
   if (i != this->Depends.end()) {
     this->Depends.erase(i);
   }

Source/cmComputeTargetDepends.cxx

@@ -140,8 +140,7 @@ void cmComputeTargetDepends::GetTargetDirectDepends(cmGeneratorTarget const* t,
 {
   // Lookup the index for this target.  All targets should be known by
   // this point.
-  std::map<cmGeneratorTarget const*, int>::const_iterator tii =
-    this->TargetIndex.find(t);
+  auto tii = this->TargetIndex.find(t);
   assert(tii != this->TargetIndex.end());
   int i = tii->second;
 
@@ -149,7 +148,7 @@ void cmComputeTargetDepends::GetTargetDirectDepends(cmGeneratorTarget const* t,
   EdgeList const& nl = this->FinalGraph[i];
   for (cmGraphEdge const& ni : nl) {
     cmGeneratorTarget const* dep = this->Targets[ni];
-    cmTargetDependSet::iterator di = deps.insert(dep).first;
+    auto di = deps.insert(dep).first;
     di->SetType(ni.IsStrong());
     di->SetBacktrace(ni.GetBacktrace());
   }
@@ -368,8 +367,7 @@ void cmComputeTargetDepends::AddTargetDepend(
   } else {
     // Lookup the index for this target.  All targets should be known by
     // this point.
-    std::map<cmGeneratorTarget const*, int>::const_iterator tii =
-      this->TargetIndex.find(dependee);
+    auto tii = this->TargetIndex.find(dependee);
     assert(tii != this->TargetIndex.end());
     int dependee_index = tii->second;
 

Source/cmConditionEvaluator.cxx

@@ -367,7 +367,7 @@ bool cmConditionEvaluator::HandleLevel0(cmArgumentList& newArgs,
   int reducible;
   do {
     reducible = 0;
-    cmArgumentList::iterator arg = newArgs.begin();
+    auto arg = newArgs.begin();
     while (arg != newArgs.end()) {
       if (IsKeyword(keyParenL, *arg)) {
         // search for the closing paren for this opening one
@@ -393,7 +393,7 @@ bool cmConditionEvaluator::HandleLevel0(cmArgumentList& newArgs,
         std::vector<cmExpandedCommandArgument> newArgs2;
 
         // copy to the list structure
-        cmArgumentList::iterator argP1 = arg;
+        auto argP1 = arg;
         argP1++;
         cmAppend(newArgs2, argP1, argClose);
         newArgs2.pop_back();
@@ -424,7 +424,7 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
   int reducible;
   do {
     reducible = 0;
-    cmArgumentList::iterator arg = newArgs.begin();
+    auto arg = newArgs.begin();
     cmArgumentList::iterator argP1;
     cmArgumentList::iterator argP2;
     while (arg != newArgs.end()) {
@@ -524,7 +524,7 @@ bool cmConditionEvaluator::HandleLevel2(cmArgumentList& newArgs,
   const char* def2;
   do {
     reducible = 0;
-    cmArgumentList::iterator arg = newArgs.begin();
+    auto arg = newArgs.begin();
     cmArgumentList::iterator argP1;
     cmArgumentList::iterator argP2;
     while (arg != newArgs.end()) {
@@ -700,7 +700,7 @@ bool cmConditionEvaluator::HandleLevel3(cmArgumentList& newArgs,
   int reducible;
   do {
     reducible = 0;
-    cmArgumentList::iterator arg = newArgs.begin();
+    auto arg = newArgs.begin();
     cmArgumentList::iterator argP1;
     cmArgumentList::iterator argP2;
     while (arg != newArgs.end()) {
@@ -728,7 +728,7 @@ bool cmConditionEvaluator::HandleLevel4(cmArgumentList& newArgs,
   bool rhs;
   do {
     reducible = 0;
-    cmArgumentList::iterator arg = newArgs.begin();
+    auto arg = newArgs.begin();
     cmArgumentList::iterator argP1;
     cmArgumentList::iterator argP2;
     while (arg != newArgs.end()) {

Source/cmCreateTestSourceList.cxx

@@ -20,7 +20,7 @@ bool cmCreateTestSourceList::InitialPass(std::vector<std::string> const& args,
     return false;
   }
 
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
   std::string extraInclude;
   std::string function;
   std::vector<std::string> tests;
@@ -67,7 +67,7 @@ bool cmCreateTestSourceList::InitialPass(std::vector<std::string> const& args,
   configFile += "/Templates/TestDriver.cxx.in";
   // Create the test driver file
 
-  std::vector<std::string>::const_iterator testsBegin = i;
+  auto testsBegin = i;
   std::vector<std::string> tests_func_name;
 
   // The rest of the arguments consist of a list of test source files.

Source/cmDepends.cxx

@@ -33,8 +33,7 @@ bool cmDepends::Write(std::ostream& makeDepends, std::ostream& internalDepends)
       cmMakefile* mf = this->LocalGenerator->GetMakefile();
       cmExpandList(mf->GetSafeDefinition(srcLang), pairs);
     }
-    for (std::vector<std::string>::iterator si = pairs.begin();
-         si != pairs.end();) {
+    for (auto si = pairs.begin(); si != pairs.end();) {
       // Get the source and object file.
       std::string const& src = *si++;
       if (si == pairs.end()) {

Source/cmDependsC.cxx

@@ -438,8 +438,7 @@ void cmDependsC::TransformLine(std::string& line)
   if (!this->IncludeRegexTransform.find(line)) {
     return;
   }
-  TransformRulesType::const_iterator tri =
-    this->TransformRules.find(this->IncludeRegexTransform.match(3));
+  auto tri = this->TransformRules.find(this->IncludeRegexTransform.match(3));
   if (tri == this->TransformRules.end()) {
     return;
   }

Source/cmDependsFortran.cxx

@@ -56,8 +56,7 @@ public:
   cmFortranSourceInfo& CreateObjectInfo(const std::string& obj,
                                         const std::string& src)
   {
-    std::map<std::string, cmFortranSourceInfo>::iterator i =
-      this->ObjectInfo.find(obj);
+    auto i = this->ObjectInfo.find(obj);
     if (i == this->ObjectInfo.end()) {
       std::map<std::string, cmFortranSourceInfo>::value_type entry(
         obj, cmFortranSourceInfo());
@@ -303,9 +302,7 @@ void cmDependsFortran::ConsiderModule(const std::string& name,
                                       const std::string& stampDir)
 {
   // Locate each required module.
-  using TargetRequiresMap = cmDependsFortranInternals::TargetRequiresMap;
-  TargetRequiresMap::iterator required =
-    this->Internal->TargetRequires.find(name);
+  auto required = this->Internal->TargetRequires.find(name);
   if (required != this->Internal->TargetRequires.end() &&
       required->second.empty()) {
     // The module is provided by a CMake target.  It will have a stamp file.
@@ -321,8 +318,6 @@ bool cmDependsFortran::WriteDependenciesReal(std::string const& obj,
                                              std::ostream& makeDepends,
                                              std::ostream& internalDepends)
 {
-  using TargetRequiresMap = cmDependsFortranInternals::TargetRequiresMap;
-
   // Get the source file for this object.
   std::string const& src = info.Source;
 
@@ -350,8 +345,7 @@ bool cmDependsFortran::WriteDependenciesReal(std::string const& obj,
 
     // The object file should depend on timestamped files for the
     // modules it uses.
-    TargetRequiresMap::const_iterator required =
-      this->Internal->TargetRequires.find(i);
+    auto required = this->Internal->TargetRequires.find(i);
     if (required == this->Internal->TargetRequires.end()) {
       abort();
     }

Source/cmDynamicLoader.cxx

@@ -39,8 +39,7 @@ void cmDynamicLoaderCache::CacheFile(const char* path,
 bool cmDynamicLoaderCache::GetCacheFile(const char* path,
                                         cmsys::DynamicLoader::LibraryHandle& p)
 {
-  std::map<std::string, cmsys::DynamicLoader::LibraryHandle>::iterator it =
-    this->CacheMap.find(path);
+  auto it = this->CacheMap.find(path);
   if (it != this->CacheMap.end()) {
     p = it->second;
     return true;
@@ -50,8 +49,7 @@ bool cmDynamicLoaderCache::GetCacheFile(const char* path,
 
 bool cmDynamicLoaderCache::FlushCache(const char* path)
 {
-  std::map<std::string, cmsys::DynamicLoader::LibraryHandle>::iterator it =
-    this->CacheMap.find(path);
+  auto it = this->CacheMap.find(path);
   bool ret = false;
   if (it != this->CacheMap.end()) {
     cmsys::DynamicLoader::CloseLibrary(it->second);

Source/cmELF.cxx

@@ -585,8 +585,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
   unsigned int tag)
 {
   // Short-circuit if already checked.
-  std::map<unsigned int, StringEntry>::iterator dssi =
-    this->DynamicSectionStrings.find(tag);
+  auto dssi = this->DynamicSectionStrings.find(tag);
   if (dssi != this->DynamicSectionStrings.end()) {
     if (dssi->second.Position > 0) {
       return &dssi->second;
@@ -614,8 +613,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
   ELF_Shdr const& strtab = this->SectionHeaders[sec.sh_link];
 
   // Look for the requested entry.
-  for (typename std::vector<ELF_Dyn>::iterator di =
-         this->DynamicSectionEntries.begin();
+  for (auto di = this->DynamicSectionEntries.begin();
        di != this->DynamicSectionEntries.end(); ++di) {
     ELF_Dyn& dyn = *di;
     if (static_cast<tagtype>(dyn.d_tag) == static_cast<tagtype>(tag)) {

Source/cmExportFileGenerator.cxx

@@ -1185,7 +1185,7 @@ void cmExportFileGenerator::GenerateImportedFileChecksCode(
      << targetName << " ";
 
   for (std::string const& li : importedLocations) {
-    ImportPropertyMap::const_iterator pi = properties.find(li);
+    auto pi = properties.find(li);
     if (pi != properties.end()) {
       os << cmExportFileGeneratorEscape(pi->second) << " ";
     }

Source/cmExportSetMap.cxx

@@ -9,7 +9,7 @@
 
 cmExportSet* cmExportSetMap::operator[](const std::string& name)
 {
-  std::map<std::string, cmExportSet*>::iterator it = this->find(name);
+  auto it = this->find(name);
   if (it == this->end()) // Export set not found
   {
     it = this->insert(std::make_pair(name, new cmExportSet(name))).first;

Source/cmExtraCodeBlocksGenerator.cxx

@@ -573,8 +573,7 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
       cmAppend(allIncludeDirs, cmExpandedList(systemIncludeDirs));
     }
 
-    std::vector<std::string>::const_iterator end =
-      cmRemoveDuplicates(allIncludeDirs);
+    auto end = cmRemoveDuplicates(allIncludeDirs);
 
     for (std::string const& str : cmMakeRange(allIncludeDirs.cbegin(), end)) {
       xml.StartElement("Add");

Source/cmExtraCodeLiteGenerator.cxx

@@ -307,7 +307,7 @@ void cmExtraCodeLiteGenerator::FindMatchingHeaderfiles(
     for (std::string const& ext : headerExts) {
       std::string hname = cmStrCat(headerBasename, '.', ext);
       // if it's already in the set, don't check if it exists on disk
-      std::set<std::string>::const_iterator headerIt = otherFiles.find(hname);
+      auto headerIt = otherFiles.find(hname);
       if (headerIt != otherFiles.end()) {
         break;
       }

Source/cmExtraEclipseCDT4Generator.cxx

@@ -800,7 +800,7 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
 
     // the list must contain only definition-value pairs:
     if ((defs.size() % 2) == 0) {
-      std::vector<std::string>::const_iterator di = defs.begin();
+      auto di = defs.begin();
       while (di != defs.end()) {
         std::string def = *di;
         ++di;
@@ -832,7 +832,7 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
 
     // the list must contain only definition-value pairs:
     if ((defs.size() % 2) == 0) {
-      std::vector<std::string>::const_iterator di = defs.begin();
+      auto di = defs.begin();
       while (di != defs.end()) {
         std::string def = *di;
         ++di;

Source/cmExtraSublimeTextGenerator.cxx

@@ -242,7 +242,7 @@ void cmExtraSublimeTextGenerator::AppendTarget(
     target->GetSourceFiles(sourceFiles,
                            makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
     for (cmSourceFile* sourceFile : sourceFiles) {
-      MapSourceFileFlags::iterator sourceFileFlagsIter =
+      auto sourceFileFlagsIter =
         sourceFileFlags.find(sourceFile->ResolveFullPath());
       if (sourceFileFlagsIter == sourceFileFlags.end()) {
         sourceFileFlagsIter =

Source/cmFileAPICodemodel.cxx

@@ -823,8 +823,7 @@ void Target::ProcessLanguage(std::string const& lang)
 
 Json::ArrayIndex Target::AddSourceGroup(cmSourceGroup* sg, Json::ArrayIndex si)
 {
-  std::unordered_map<cmSourceGroup const*, Json::ArrayIndex>::iterator i =
-    this->SourceGroupsMap.find(sg);
+  auto i = this->SourceGroupsMap.find(sg);
   if (i == this->SourceGroupsMap.end()) {
     auto sgIndex = static_cast<Json::ArrayIndex>(this->SourceGroups.size());
     i = this->SourceGroupsMap.emplace(sg, sgIndex).first;

Source/cmFileCommand.cxx

@@ -91,7 +91,7 @@ std::string fix_file_url_windows(const std::string& url)
 bool HandleWriteImpl(std::vector<std::string> const& args, bool append,
                      cmExecutionStatus& status)
 {
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
 
   i++; // Get rid of subcommand
 
@@ -663,7 +663,7 @@ bool HandleGlobImpl(std::vector<std::string> const& args, bool recurse,
   // File commands has at least one argument
   assert(args.size() > 1);
 
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
 
   i++; // Get rid of subcommand
 
@@ -1585,7 +1585,7 @@ bool HandleDownloadCommand(std::vector<std::string> const& args,
                            cmExecutionStatus& status)
 {
 #if !defined(CMAKE_BOOTSTRAP)
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
   if (args.size() < 3) {
     status.SetError("DOWNLOAD must be called with at least three arguments.");
     return false;
@@ -1955,7 +1955,7 @@ bool HandleUploadCommand(std::vector<std::string> const& args,
     status.SetError("UPLOAD must be called with at least three arguments.");
     return false;
   }
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
   ++i;
   std::string filename = *i;
   ++i;

Source/cmFindPackageCommand.cxx

@@ -847,8 +847,7 @@ bool cmFindPackageCommand::HandlePackageMode(
       // If there are files in ConsideredConfigs, it means that FooConfig.cmake
       // have been found, but they didn't have appropriate versions.
       else if (!this->ConsideredConfigs.empty()) {
-        std::vector<ConfigFileInfo>::const_iterator duplicate_end =
-          cmRemoveDuplicates(this->ConsideredConfigs);
+        auto duplicate_end = cmRemoveDuplicates(this->ConsideredConfigs);
         e << "Could not find a configuration file for package \"" << this->Name
           << "\" that "
           << (this->VersionExact ? "exactly matches" : "is compatible with")
@@ -1080,7 +1079,7 @@ void cmFindPackageCommand::AppendToFoundProperty(bool found)
     std::string tmp = foundProp;
 
     cmExpandList(tmp, foundContents, false);
-    std::vector<std::string>::iterator nameIt =
+    auto nameIt =
       std::find(foundContents.begin(), foundContents.end(), this->Name);
     if (nameIt != foundContents.end()) {
       foundContents.erase(nameIt);
@@ -1094,7 +1093,7 @@ void cmFindPackageCommand::AppendToFoundProperty(bool found)
     std::string tmp = notFoundProp;
 
     cmExpandList(tmp, notFoundContents, false);
-    std::vector<std::string>::iterator nameIt =
+    auto nameIt =
       std::find(notFoundContents.begin(), notFoundContents.end(), this->Name);
     if (nameIt != notFoundContents.end()) {
       notFoundContents.erase(nameIt);
@@ -1199,8 +1198,7 @@ void cmFindPackageCommand::FillPrefixesPackageRoot()
   cmSearchPath& paths = this->LabeledPaths[PathLabel::PackageRoot];
 
   // Add the PACKAGE_ROOT_PATH from each enclosing find_package call.
-  for (std::deque<std::vector<std::string>>::const_reverse_iterator pkgPaths =
-         this->Makefile->FindPackageRootPathStack.rbegin();
+  for (auto pkgPaths = this->Makefile->FindPackageRootPathStack.rbegin();
        pkgPaths != this->Makefile->FindPackageRootPathStack.rend();
        ++pkgPaths) {
     for (std::string const& path : *pkgPaths) {

Source/cmFunctionCommand.cxx

@@ -80,8 +80,7 @@ bool cmFunctionHelperCommand::operator()(
 
   // define ARGV and ARGN
   std::string argvDef = cmJoin(expandedArgs, ";");
-  std::vector<std::string>::const_iterator eit =
-    expandedArgs.begin() + (this->Args.size() - 1);
+  auto eit = expandedArgs.begin() + (this->Args.size() - 1);
   std::string argnDef = cmJoin(cmMakeRange(eit, expandedArgs.end()), ";");
   makefile.AddDefinition("ARGV", argvDef);
   makefile.MarkVariableAsUsed("ARGV");

Source/cmGeneratorExpression.cxx

@@ -370,9 +370,7 @@ bool cmGeneratorExpression::IsValidTargetName(const std::string& input)
 void cmCompiledGeneratorExpression::GetMaxLanguageStandard(
   const cmGeneratorTarget* tgt, std::map<std::string, std::string>& mapping)
 {
-  using MapType =
-    std::map<cmGeneratorTarget const*, std::map<std::string, std::string>>;
-  MapType::const_iterator it = this->MaxLanguageStandard.find(tgt);
+  auto it = this->MaxLanguageStandard.find(tgt);
   if (it != this->MaxLanguageStandard.end()) {
     mapping = it->second;
   }

Source/cmGeneratorExpressionDAGChecker.cxx

@@ -59,8 +59,7 @@ void cmGeneratorExpressionDAGChecker::Initialize()
         TEST_TRANSITIVE_PROPERTY_METHOD) false)) // NOLINT(*)
 #undef TEST_TRANSITIVE_PROPERTY_METHOD
   {
-    std::map<cmGeneratorTarget const*, std::set<std::string>>::const_iterator
-      it = top->Seen.find(this->Target);
+    auto it = top->Seen.find(this->Target);
     if (it != top->Seen.end()) {
       const std::set<std::string>& propSet = it->second;
       if (propSet.find(this->Property) != propSet.end()) {

Source/cmGeneratorExpressionEvaluationFile.cxx

@@ -64,8 +64,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(
     outputFileName = this->FixRelativePath(outputFileName, PathForOutput, lg);
   }
 
-  std::map<std::string, std::string>::iterator it =
-    outputFiles.find(outputFileName);
+  auto it = outputFiles.find(outputFileName);
 
   if (it != outputFiles.end()) {
     if (it->second == outputContent) {

Source/cmGeneratorExpressionEvaluator.cxx

@@ -30,9 +30,7 @@ std::string GeneratorExpressionContent::ProcessArbitraryContent(
 {
   std::string result;
 
-  const std::vector<
-    std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator pend =
-    this->ParamChildren.end();
+  const auto pend = this->ParamChildren.end();
   for (; pit != pend; ++pit) {
     for (cmGeneratorExpressionEvaluator* pExprEval : *pit) {
       if (node->RequiresLiteralInput()) {
@@ -116,11 +114,8 @@ std::string GeneratorExpressionContent::EvaluateParameters(
 {
   const int numExpected = node->NumExpectedParameters();
   {
-    std::vector<std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator
-      pit = this->ParamChildren.begin();
-    const std::vector<
-      std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator pend =
-      this->ParamChildren.end();
+    auto pit = this->ParamChildren.begin();
+    const auto pend = this->ParamChildren.end();
     const bool acceptsArbitraryContent =
       node->AcceptsArbitraryContentParameter();
     int counter = 1;

Source/cmGeneratorExpressionParser.cxx

@@ -66,8 +66,7 @@ void cmGeneratorExpressionParser::ParseGeneratorExpression(
   unsigned int nestedLevel = this->NestingLevel;
   ++this->NestingLevel;
 
-  std::vector<cmGeneratorExpressionToken>::const_iterator startToken =
-    this->it - 1;
+  auto startToken = this->it - 1;
 
   std::vector<cmGeneratorExpressionEvaluator*> identifier;
   while (this->it->TokenType != cmGeneratorExpressionToken::EndExpression &&
@@ -174,13 +173,9 @@ void cmGeneratorExpressionParser::ParseGeneratorExpression(
     if (!parameters.empty()) {
       extendText(result, colonToken);
 
-      using EvaluatorVector = std::vector<cmGeneratorExpressionEvaluator*>;
-      using TokenVector = std::vector<cmGeneratorExpressionToken>;
-      std::vector<EvaluatorVector>::const_iterator pit = parameters.begin();
-      const std::vector<EvaluatorVector>::const_iterator pend =
-        parameters.end();
-      std::vector<TokenVector::const_iterator>::const_iterator commaIt =
-        commaTokens.begin();
+      auto pit = parameters.begin();
+      const auto pend = parameters.end();
+      auto commaIt = commaTokens.begin();
       assert(parameters.size() > commaTokens.size());
       for (; pit != pend; ++pit, ++commaIt) {
         if (!pit->empty() && !emptyParamTermination) {

Source/cmGeneratorTarget.cxx

@@ -204,9 +204,8 @@ void CreatePropertyGeneratorExpressions(
   std::vector<cmGeneratorTarget::TargetPropertyEntry*>& items,
   bool evaluateForBuildsystem = false)
 {
-  std::vector<cmListFileBacktrace>::const_iterator btIt = backtraces.begin();
-  for (std::vector<std::string>::const_iterator it = entries.begin();
-       it != entries.end(); ++it, ++btIt) {
+  auto btIt = backtraces.begin();
+  for (auto it = entries.begin(); it != entries.end(); ++it, ++btIt) {
     items.push_back(
       CreateTargetPropertyEntry(*it, *btIt, evaluateForBuildsystem));
   }
@@ -471,8 +470,7 @@ std::string cmGeneratorTarget::GetOutputName(
 {
   // Lookup/compute/cache the output name for this configuration.
   OutputNameKey key(config, artifact);
-  cmGeneratorTarget::OutputNameMapType::iterator i =
-    this->OutputNameMap.find(key);
+  auto i = this->OutputNameMap.find(key);
   if (i == this->OutputNameMap.end()) {
     // Add empty name in map to detect potential recursion.
     OutputNameMapType::value_type entry(key, "");
@@ -716,7 +714,7 @@ void cmGeneratorTarget::AddIncludeDirectory(const std::string& src,
 std::vector<cmSourceFile*> const* cmGeneratorTarget::GetSourceDepends(
   cmSourceFile const* sf) const
 {
-  SourceEntriesType::const_iterator i = this->SourceDepends.find(sf);
+  auto i = this->SourceDepends.find(sf);
   if (i != this->SourceDepends.end()) {
     return &i->second.Depends;
   }
@@ -925,8 +923,7 @@ void cmGeneratorTarget::AddExplicitObjectName(cmSourceFile const* sf)
 bool cmGeneratorTarget::HasExplicitObjectName(cmSourceFile const* file) const
 {
   const_cast<cmGeneratorTarget*>(this)->ComputeObjectMapping();
-  std::set<cmSourceFile const*>::const_iterator it =
-    this->ExplicitObjectName.find(file);
+  auto it = this->ExplicitObjectName.find(file);
   return it != this->ExplicitObjectName.end();
 }
 
@@ -1108,8 +1105,7 @@ bool cmGeneratorTarget::IsSystemIncludeDirectory(
   }
 
   using IncludeCacheType = std::map<std::string, std::vector<std::string>>;
-  IncludeCacheType::const_iterator iter =
-    this->SystemIncludesCache.find(config_upper);
+  auto iter = this->SystemIncludesCache.find(config_upper);
 
   if (iter == this->SystemIncludesCache.end()) {
     cmGeneratorExpressionDAGChecker dagChecker(
@@ -1548,7 +1544,7 @@ cmGeneratorTarget::KindedSources const& cmGeneratorTarget::GetKindedSources(
 
   // Lookup any existing link implementation for this configuration.
   std::string const key = cmSystemTools::UpperCase(config);
-  KindedSourcesMapType::iterator it = this->KindedSourcesMap.find(key);
+  auto it = this->KindedSourcesMap.find(key);
   if (it != this->KindedSourcesMap.end()) {
     if (!it->second.Initialized) {
       std::ostringstream e;
@@ -1680,8 +1676,7 @@ void cmGeneratorTarget::ComputeAllConfigSources() const
   for (size_t ci = 0; ci < configs.size(); ++ci) {
     KindedSources const& sources = this->GetKindedSources(configs[ci]);
     for (SourceAndKind const& src : sources.Sources) {
-      std::map<cmSourceFile const*, size_t>::iterator mi =
-        index.find(src.Source.Value);
+      auto mi = index.find(src.Source.Value);
       if (mi == index.end()) {
         AllConfigSource acs;
         acs.Source = src.Source.Value;
@@ -2292,7 +2287,7 @@ cmGeneratorTarget::LinkClosure const* cmGeneratorTarget::GetLinkClosure(
   const std::string& config) const
 {
   std::string key(cmSystemTools::UpperCase(config));
-  LinkClosureMapType::iterator i = this->LinkClosureMap.find(key);
+  auto i = this->LinkClosureMap.find(key);
   if (i == this->LinkClosureMap.end()) {
     LinkClosure lc;
     this->ComputeLinkClosure(config, lc);
@@ -2474,8 +2469,7 @@ cmGeneratorTarget::CompileInfo const* cmGeneratorTarget::GetCompileInfo(
   if (!config.empty()) {
     config_upper = cmSystemTools::UpperCase(config);
   }
-  CompileInfoMapType::const_iterator i =
-    this->CompileInfoMap.find(config_upper);
+  auto i = this->CompileInfoMap.find(config_upper);
   if (i == this->CompileInfoMap.end()) {
     CompileInfo info;
     this->ComputePDBOutputDir("COMPILE_PDB", config, info.CompilePdbDir);
@@ -2500,8 +2494,7 @@ cmGeneratorTarget::GetModuleDefinitionInfo(std::string const& config) const
   if (!config.empty()) {
     config_upper = cmSystemTools::UpperCase(config);
   }
-  ModuleDefinitionInfoMapType::const_iterator i =
-    this->ModuleDefinitionInfoMap.find(config_upper);
+  auto i = this->ModuleDefinitionInfoMap.find(config_upper);
   if (i == this->ModuleDefinitionInfoMap.end()) {
     ModuleDefinitionInfo info;
     this->ComputeModuleDefinitionInfo(config, info);
@@ -2712,7 +2705,7 @@ void cmTargetTraceDependencies::QueueSource(cmSourceFile* sf)
 
 void cmTargetTraceDependencies::FollowName(std::string const& name)
 {
-  NameMapType::iterator i = this->NameMap.find(name);
+  auto i = this->NameMap.find(name);
   if (i == this->NameMap.end()) {
     // Check if we know how to generate this file.
     cmSourceFile* sf = this->Makefile->GetSourceFileWithOutput(name);
@@ -4260,8 +4253,7 @@ void cmGeneratorTarget::GetTargetObjectNames(
 
   for (cmSourceFile const* src : objectSources) {
     // Find the object file name corresponding to this source file.
-    std::map<cmSourceFile const*, std::string>::const_iterator map_it =
-      mapping.find(src);
+    auto map_it = mapping.find(src);
     // It must exist because we populated the mapping just above.
     assert(!map_it->second.empty());
     objects.push_back(map_it->second);
@@ -4285,8 +4277,7 @@ cmGeneratorTarget::GetTargetSourceFileFlags(const cmSourceFile* sf) const
 {
   struct SourceFileFlags flags;
   this->ConstructSourceFileFlags();
-  std::map<cmSourceFile const*, SourceFileFlags>::iterator si =
-    this->SourceFlagsMap.find(sf);
+  auto si = this->SourceFlagsMap.find(sf);
   if (si != this->SourceFlagsMap.end()) {
     flags = si->second;
   } else {
@@ -4620,7 +4611,7 @@ void cmGeneratorTarget::CheckPropertyCompatibility(
   if (!prop.empty()) {
     // Use a sorted std::vector to keep the error message sorted.
     std::vector<std::string> props;
-    std::set<std::string>::const_iterator i = emittedBools.find(prop);
+    auto i = emittedBools.find(prop);
     if (i != emittedBools.end()) {
       props.push_back(strBool);
     }
@@ -5065,7 +5056,7 @@ cmComputeLinkInformation* cmGeneratorTarget::GetLinkInformation(
 {
   // Lookup any existing information for this configuration.
   std::string key(cmSystemTools::UpperCase(config));
-  cmTargetLinkInformationMap::iterator i = this->LinkInformation.find(key);
+  auto i = this->LinkInformation.find(key);
   if (i == this->LinkInformation.end()) {
     // Compute information for this configuration.
     cmComputeLinkInformation* info =
@@ -5466,7 +5457,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
   if (!config.empty()) {
     config_upper = cmSystemTools::UpperCase(config);
   }
-  OutputInfoMapType::iterator i = this->OutputInfoMap.find(config_upper);
+  auto i = this->OutputInfoMap.find(config_upper);
   if (i == this->OutputInfoMap.end()) {
     // Add empty info in map to detect potential recursion.
     OutputInfo info;
@@ -5865,7 +5856,7 @@ cmGeneratorTarget::ImportInfo const* cmGeneratorTarget::GetImportInfo(
     config_upper = "NOCONFIG";
   }
 
-  ImportInfoMapType::const_iterator i = this->ImportInfoMap.find(config_upper);
+  auto i = this->ImportInfoMap.find(config_upper);
   if (i == this->ImportInfoMap.end()) {
     ImportInfo info;
     this->ComputeImportInfo(config_upper, info);
@@ -6069,7 +6060,7 @@ bool cmGeneratorTarget::GetConfigCommonSourceFiles(
   std::vector<std::string> const& configs =
     this->Makefile->GetGeneratorConfigs();
 
-  std::vector<std::string>::const_iterator it = configs.begin();
+  auto it = configs.begin();
   const std::string& firstConfig = *it;
   this->GetSourceFilesWithoutObjectLibraries(files, firstConfig);
 

Source/cmGetDirectoryPropertyCommand.cxx

@@ -24,7 +24,7 @@ bool cmGetDirectoryPropertyCommand(std::vector<std::string> const& args,
     return false;
   }
 
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
   std::string const& variable = *i;
   ++i;
 

Source/cmGhsMultiTargetGenerator.cxx

@@ -177,8 +177,7 @@ void cmGhsMultiTargetGenerator::WriteTargetSpecifics(std::ostream& fout,
 void cmGhsMultiTargetGenerator::SetCompilerFlags(std::string const& config,
                                                  const std::string& language)
 {
-  std::map<std::string, std::string>::iterator i =
-    this->FlagsByLanguage.find(language);
+  auto i = this->FlagsByLanguage.find(language);
   if (i == this->FlagsByLanguage.end()) {
     std::string flags;
     const char* lang = language.c_str();
@@ -209,8 +208,7 @@ void cmGhsMultiTargetGenerator::SetCompilerFlags(std::string const& config,
 std::string cmGhsMultiTargetGenerator::GetDefines(const std::string& language,
                                                   std::string const& config)
 {
-  std::map<std::string, std::string>::iterator i =
-    this->DefinesByLanguage.find(language);
+  auto i = this->DefinesByLanguage.find(language);
   if (i == this->DefinesByLanguage.end()) {
     std::set<std::string> defines;
     const char* lang = language.c_str();
@@ -232,8 +230,7 @@ void cmGhsMultiTargetGenerator::WriteCompilerFlags(std::ostream& fout,
                                                    std::string const&,
                                                    const std::string& language)
 {
-  std::map<std::string, std::string>::iterator flagsByLangI =
-    this->FlagsByLanguage.find(language);
+  auto flagsByLangI = this->FlagsByLanguage.find(language);
   if (flagsByLangI != this->FlagsByLanguage.end()) {
     if (!flagsByLangI->second.empty()) {
       std::vector<std::string> ghsCompFlags =

Source/cmGlobalUnixMakefileGenerator3.cxx

@@ -291,8 +291,7 @@ void cmGlobalUnixMakefileGenerator3::WriteMainCMakefile()
   // Sort the list and remove duplicates.
   std::sort(lfiles.begin(), lfiles.end(), std::less<std::string>());
 #if !defined(__VMS) // The Compaq STL on VMS crashes, so accept duplicates.
-  std::vector<std::string>::iterator new_end =
-    std::unique(lfiles.begin(), lfiles.end());
+  auto new_end = std::unique(lfiles.begin(), lfiles.end());
   lfiles.erase(new_end, lfiles.end());
 #endif
 

Source/cmGlobalXCodeGenerator.cxx

@@ -582,10 +582,8 @@ void cmGlobalXCodeGenerator::CreateReRunCMakeFile(
   }
 
   // sort the array
-  std::sort(lfiles.begin(), lfiles.end(), std::less<std::string>());
-  std::vector<std::string>::iterator new_end =
-    std::unique(lfiles.begin(), lfiles.end());
-  lfiles.erase(new_end, lfiles.end());
+  std::sort(lfiles.begin(), lfiles.end());
+  lfiles.erase(std::unique(lfiles.begin(), lfiles.end()), lfiles.end());
 
   cmake* cm = this->GetCMakeInstance();
   if (cm->DoWriteGlobVerifyTarget()) {
@@ -2629,8 +2627,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::FindXCodeTarget(
     return nullptr;
   }
 
-  std::map<cmGeneratorTarget const*, cmXCodeObject*>::const_iterator const i =
-    this->XCodeObjectMap.find(t);
+  auto const i = this->XCodeObjectMap.find(t);
   if (i == this->XCodeObjectMap.end()) {
     return nullptr;
   }
@@ -2910,8 +2907,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateOrGetPBXGroup(
   }
   target += gtgt->GetName();
   s = cmStrCat(target, '/', sg->GetFullName());
-  std::map<std::string, cmXCodeObject*>::iterator it =
-    this->GroupNameMap.find(s);
+  auto it = this->GroupNameMap.find(s);
   if (it != this->GroupNameMap.end()) {
     return it->second;
   }
@@ -2956,8 +2952,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateOrGetPBXGroup(
     std::string curr_folder = cmStrCat(target, '/');
     for (auto const& folder : cmTokenize(sg->GetFullName(), "\\")) {
       curr_folder += folder;
-      std::map<std::string, cmXCodeObject*>::iterator i_folder =
-        this->GroupNameMap.find(curr_folder);
+      auto const i_folder = this->GroupNameMap.find(curr_folder);
       // Create new folder
       if (i_folder == this->GroupNameMap.end()) {
         cmXCodeObject* group = this->CreatePBXGroup(tgroup, folder);
@@ -3269,8 +3264,7 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
         std::string trel = this->ConvertToRelativeForMake(tfull);
 
         // Add this target to the post-build phases of its dependencies.
-        std::map<std::string, cmXCodeObject::StringVec>::const_iterator y =
-          target->GetDependTargets().find(configName);
+        auto const y = target->GetDependTargets().find(configName);
         if (y != target->GetDependTargets().end()) {
           for (auto const& deptgt : y->second) {
             makefileStream << this->PostBuildMakeTarget(deptgt, configName)
@@ -3290,8 +3284,7 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
         makefileStream << trel << ":";
 
         // List dependencies if any exist.
-        std::map<std::string, cmXCodeObject::StringVec>::const_iterator x =
-          target->GetDependLibraries().find(configName);
+        auto const x = target->GetDependLibraries().find(configName);
         if (x != target->GetDependLibraries().end()) {
           for (auto const& deplib : x->second) {
             std::string file = this->ConvertToRelativeForMake(deplib);

Source/cmGraphVizWriter.cxx

@@ -368,8 +368,7 @@ void cmGraphVizWriter::WriteConnections(
   const std::string& targetName, std::set<std::string>& insertedNodes,
   std::set<std::string>& insertedConnections, cmGeneratedFileStream& str) const
 {
-  std::map<std::string, const cmGeneratorTarget*>::const_iterator targetPtrIt =
-    this->TargetPtrs.find(targetName);
+  auto targetPtrIt = this->TargetPtrs.find(targetName);
 
   if (targetPtrIt == this->TargetPtrs.end()) // not found at all
   {
@@ -390,8 +389,7 @@ void cmGraphVizWriter::WriteConnections(
 
   for (auto const& llit : ll) {
     const std::string& libName = llit.first;
-    std::map<std::string, std::string>::const_iterator libNameIt =
-      this->TargetNamesNodes.find(libName);
+    auto libNameIt = this->TargetNamesNodes.find(libName);
 
     // can happen e.g. if GRAPHVIZ_TARGET_IGNORE_REGEX is used
     if (libNameIt == this->TargetNamesNodes.end()) {
@@ -419,8 +417,7 @@ void cmGraphVizWriter::WriteDependerConnections(
   const std::string& targetName, std::set<std::string>& insertedNodes,
   std::set<std::string>& insertedConnections, cmGeneratedFileStream& str) const
 {
-  std::map<std::string, const cmGeneratorTarget*>::const_iterator targetPtrIt =
-    this->TargetPtrs.find(targetName);
+  auto targetPtrIt = this->TargetPtrs.find(targetName);
 
   if (targetPtrIt == this->TargetPtrs.end()) // not found at all
   {
@@ -454,8 +451,7 @@ void cmGraphVizWriter::WriteDependerConnections(
     for (auto const& llit : ll) {
       if (llit.first == targetName) {
         // So this target links against targetName.
-        std::map<std::string, std::string>::const_iterator dependerNodeNameIt =
-          this->TargetNamesNodes.find(tptr.first);
+        auto dependerNodeNameIt = this->TargetNamesNodes.find(tptr.first);
 
         if (dependerNodeNameIt != this->TargetNamesNodes.end()) {
           std::string connectionName =
@@ -487,8 +483,7 @@ void cmGraphVizWriter::WriteNode(const std::string& targetName,
 {
   if (insertedNodes.find(targetName) == insertedNodes.end()) {
     insertedNodes.insert(targetName);
-    std::map<std::string, std::string>::const_iterator nameIt =
-      this->TargetNamesNodes.find(targetName);
+    auto nameIt = this->TargetNamesNodes.find(targetName);
 
     str << "    \"" << nameIt->second << "\" [ label=\"" << targetName
         << "\" shape=\"" << getShapeForTarget(target) << "\"];" << std::endl;
@@ -556,8 +551,7 @@ int cmGraphVizWriter::CollectAllExternalLibs(int cnt)
           }
         }
 
-        std::map<std::string, const cmGeneratorTarget*>::const_iterator tarIt =
-          this->TargetPtrs.find(libName);
+        auto tarIt = this->TargetPtrs.find(libName);
         if (tarIt == this->TargetPtrs.end()) {
           std::ostringstream ostr;
           ostr << this->GraphNodePrefix << cnt++;

Source/cmIncludeDirectoryCommand.cxx

@@ -22,7 +22,7 @@ bool cmIncludeDirectoryCommand::InitialPass(
     return true;
   }
 
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
 
   bool before = this->Makefile->IsOn("CMAKE_INCLUDE_DIRECTORIES_BEFORE");
   bool system = false;

Source/cmInstallFilesCommand.cxx

@@ -63,7 +63,7 @@ static void FinalAction(cmMakefile& makefile, std::string const& dest,
   // two different options
   if (args.size() > 1) {
     // now put the files into the list
-    std::vector<std::string>::const_iterator s = args.begin();
+    auto s = args.begin();
     ++s;
     // for each argument, get the files
     for (; s != args.end(); ++s) {
@@ -85,7 +85,7 @@ static void FinalAction(cmMakefile& makefile, std::string const& dest,
     std::string const& regex = args[0];
     cmSystemTools::Glob(makefile.GetCurrentSourceDirectory(), regex, files);
 
-    std::vector<std::string>::iterator s = files.begin();
+    auto s = files.begin();
     // for each argument, get the files
     for (; s != files.end(); ++s) {
       installFiles.push_back(FindInstallSource(makefile, s->c_str()));

Source/cmInstallProgramsCommand.cxx

@@ -52,7 +52,7 @@ static void FinalAction(cmMakefile& makefile, std::string const& dest,
   // two different options
   if (args.size() > 1 || files_mode) {
     // for each argument, get the programs
-    std::vector<std::string>::const_iterator s = args.begin();
+    auto s = args.begin();
     if (files_mode) {
       // Skip the FILES argument in files mode.
       ++s;
@@ -67,7 +67,7 @@ static void FinalAction(cmMakefile& makefile, std::string const& dest,
     cmSystemTools::Glob(makefile.GetCurrentSourceDirectory(), args[0],
                         programs);
 
-    std::vector<std::string>::iterator s = programs.begin();
+    auto s = programs.begin();
     // for each argument, get the programs
     for (; s != programs.end(); ++s) {
       files.push_back(FindInstallSource(makefile, s->c_str()));

Source/cmInstallTargetsCommand.cxx

@@ -24,7 +24,7 @@ bool cmInstallTargetsCommand::InitialPass(std::vector<std::string> const& args,
   this->Makefile->GetGlobalGenerator()->EnableInstallTarget();
 
   cmMakefile::cmTargetMap& tgts = this->Makefile->GetTargets();
-  std::vector<std::string>::const_iterator s = args.begin();
+  auto s = args.begin();
   ++s;
   std::string runtime_dir = "/bin";
   for (; s != args.end(); ++s) {
@@ -38,7 +38,7 @@ bool cmInstallTargetsCommand::InitialPass(std::vector<std::string> const& args,
 
       runtime_dir = *s;
     } else {
-      cmMakefile::cmTargetMap::iterator ti = tgts.find(*s);
+      auto ti = tgts.find(*s);
       if (ti != tgts.end()) {
         ti->second.SetInstallPath(args[0]);
         ti->second.SetRuntimeInstallPath(runtime_dir);

Source/cmInstalledFile.cxx

@@ -74,7 +74,7 @@ bool cmInstalledFile::HasProperty(const std::string& prop) const
 bool cmInstalledFile::GetProperty(const std::string& prop,
                                   std::string& value) const
 {
-  PropertyMapType::const_iterator i = this->Properties.find(prop);
+  auto i = this->Properties.find(prop);
   if (i == this->Properties.end()) {
     return false;
   }

Source/cmLinkLibrariesCommand.cxx

@@ -15,8 +15,7 @@ bool cmLinkLibrariesCommand::InitialPass(std::vector<std::string> const& args,
   }
   // add libraries, note that there is an optional prefix
   // of debug and optimized than can be used
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
+  for (auto i = args.begin(); i != args.end(); ++i) {
     if (*i == "debug") {
       ++i;
       if (i == args.end()) {

Source/cmListCommand.cxx

@@ -338,8 +338,7 @@ bool HandleFindCommand(std::vector<std::string> const& args,
     return true;
   }
 
-  std::vector<std::string>::iterator it =
-    std::find(varArgsExpanded.begin(), varArgsExpanded.end(), args[2]);
+  auto it = std::find(varArgsExpanded.begin(), varArgsExpanded.end(), args[2]);
   if (it != varArgsExpanded.end()) {
     status.GetMakefile().AddDefinition(
       variableName,
@@ -441,13 +440,12 @@ bool HandleRemoveItemCommand(std::vector<std::string> const& args,
 
   std::vector<std::string> remove(args.begin() + 2, args.end());
   std::sort(remove.begin(), remove.end());
-  std::vector<std::string>::const_iterator remEnd =
-    std::unique(remove.begin(), remove.end());
-  std::vector<std::string>::const_iterator remBegin = remove.begin();
+  auto remEnd = std::unique(remove.begin(), remove.end());
+  auto remBegin = remove.begin();
 
-  std::vector<std::string>::const_iterator argsEnd =
+  auto argsEnd =
     cmRemoveMatching(varArgsExpanded, cmMakeRange(remBegin, remEnd));
-  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
+  auto argsBegin = varArgsExpanded.cbegin();
   std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
   status.GetMakefile().AddDefinition(listName, value);
   return true;
@@ -491,9 +489,8 @@ bool HandleRemoveDuplicatesCommand(std::vector<std::string> const& args,
     return true;
   }
 
-  std::vector<std::string>::const_iterator argsEnd =
-    cmRemoveDuplicates(varArgsExpanded);
-  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
+  auto argsEnd = cmRemoveDuplicates(varArgsExpanded);
+  auto argsBegin = varArgsExpanded.cbegin();
   std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
 
   status.GetMakefile().AddDefinition(listName, value);
@@ -1357,13 +1354,12 @@ bool HandleRemoveAtCommand(std::vector<std::string> const& args,
   }
 
   std::sort(removed.begin(), removed.end());
-  std::vector<size_t>::const_iterator remEnd =
-    std::unique(removed.begin(), removed.end());
-  std::vector<size_t>::const_iterator remBegin = removed.begin();
+  auto remEnd = std::unique(removed.begin(), removed.end());
+  auto remBegin = removed.begin();
 
-  std::vector<std::string>::const_iterator argsEnd =
+  auto argsEnd =
     cmRemoveIndices(varArgsExpanded, cmMakeRange(remBegin, remEnd));
-  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
+  auto argsBegin = varArgsExpanded.cbegin();
   std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
 
   status.GetMakefile().AddDefinition(listName, value);
@@ -1456,9 +1452,9 @@ bool FilterRegex(std::vector<std::string> const& args, bool includeMatches,
     return false;
   }
 
-  std::vector<std::string>::iterator argsBegin = varArgsExpanded.begin();
-  std::vector<std::string>::iterator argsEnd = varArgsExpanded.end();
-  std::vector<std::string>::iterator newArgsEnd =
+  auto argsBegin = varArgsExpanded.begin();
+  auto argsEnd = varArgsExpanded.end();
+  auto newArgsEnd =
     std::remove_if(argsBegin, argsEnd, MatchesRegex(regex, includeMatches));
 
   std::string value = cmJoin(cmMakeRange(argsBegin, newArgsEnd), ";");

Source/cmLocalGenerator.cxx

@@ -649,8 +649,7 @@ void cmLocalGenerator::AddOwnedImportedGeneratorTarget(cmGeneratorTarget* gt)
 cmGeneratorTarget* cmLocalGenerator::FindLocalNonAliasGeneratorTarget(
   const std::string& name) const
 {
-  GeneratorTargetMap::const_iterator ti =
-    this->GeneratorTargetSearchIndex.find(name);
+  auto ti = this->GeneratorTargetSearchIndex.find(name);
   if (ti != this->GeneratorTargetSearchIndex.end()) {
     return ti->second;
   }
@@ -1641,8 +1640,7 @@ void cmLocalGenerator::AddLanguageFlagsForLinking(
 cmGeneratorTarget* cmLocalGenerator::FindGeneratorTargetToUse(
   const std::string& name) const
 {
-  GeneratorTargetMap::const_iterator imported =
-    this->ImportedGeneratorTargets.find(name);
+  auto imported = this->ImportedGeneratorTargets.find(name);
   if (imported != this->ImportedGeneratorTargets.end()) {
     return imported->second;
   }
@@ -1843,8 +1841,7 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
 
   std::vector<std::string>& stds = langStdMap[lang];
 
-  std::vector<std::string>::const_iterator stdIt =
-    std::find(stds.begin(), stds.end(), standard);
+  auto stdIt = std::find(stds.begin(), stds.end(), standard);
   if (stdIt == stds.end()) {
     std::string e =
       lang + "_STANDARD is set to invalid value '" + standard + "'";
@@ -1853,8 +1850,7 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
     return;
   }
 
-  std::vector<std::string>::const_iterator defaultStdIt =
-    std::find(stds.begin(), stds.end(), defaultStd);
+  auto defaultStdIt = std::find(stds.begin(), stds.end(), defaultStd);
   if (defaultStdIt == stds.end()) {
     std::string e = "CMAKE_" + lang +
       "_STANDARD_DEFAULT is set to invalid value '" + std::string(defaultStd) +
@@ -2720,8 +2716,7 @@ std::string& cmLocalGenerator::CreateSafeUniqueObjectFileName(
   const std::string& sin, std::string const& dir_max)
 {
   // Look for an existing mapped name for this object file.
-  std::map<std::string, std::string>::iterator it =
-    this->UniqueObjectNamesMap.find(sin);
+  auto it = this->UniqueObjectNamesMap.find(sin);
 
   // If no entry exists create one.
   if (it == this->UniqueObjectNamesMap.end()) {

Source/cmLocalNinjaGenerator.cxx

@@ -386,8 +386,7 @@ std::string cmLocalNinjaGenerator::BuildCommandLine(
   }
 
   std::ostringstream cmd;
-  for (std::vector<std::string>::const_iterator li = cmdLines.begin();
-       li != cmdLines.end(); ++li)
+  for (auto li = cmdLines.begin(); li != cmdLines.end(); ++li)
 #ifdef _WIN32
   {
     if (li != cmdLines.begin()) {
@@ -531,8 +530,7 @@ void cmLocalNinjaGenerator::AddCustomCommandTarget(cmCustomCommand const* cc,
 void cmLocalNinjaGenerator::WriteCustomCommandBuildStatements()
 {
   for (cmCustomCommand const* customCommand : this->CustomCommands) {
-    CustomCommandTargetMap::iterator i =
-      this->CustomCommandTargets.find(customCommand);
+    auto i = this->CustomCommandTargets.find(customCommand);
     assert(i != this->CustomCommandTargets.end());
 
     // A custom command may appear on multiple targets.  However, some build
@@ -544,7 +542,7 @@ void cmLocalNinjaGenerator::WriteCustomCommandBuildStatements()
     //
     // FIXME: This won't work in certain obscure scenarios involving indirect
     // dependencies.
-    std::set<cmGeneratorTarget*>::iterator j = i->second.begin();
+    auto j = i->second.begin();
     assert(j != i->second.end());
     std::vector<std::string> ccTargetDeps;
     this->GetGlobalNinjaGenerator()->AppendTargetDependsClosure(*j,

Source/cmLocalUnixMakefileGenerator3.cxx

@@ -1225,8 +1225,7 @@ std::string cmLocalUnixMakefileGenerator3::CreateMakeVariable(
 
   // see if the variable has been defined before and return
   // the modified version of the variable
-  std::map<std::string, std::string>::iterator i =
-    this->MakeVariableMap.find(unmodified);
+  auto i = this->MakeVariableMap.find(unmodified);
   if (i != this->MakeVariableMap.end()) {
     return i->second;
   }
@@ -1495,8 +1494,7 @@ void cmLocalUnixMakefileGenerator3::CheckMultipleOutputs(bool verbose)
 
   // Convert the string to a list and preserve empty entries.
   std::vector<std::string> pairs = cmExpandedList(pairs_string, true);
-  for (std::vector<std::string>::const_iterator i = pairs.begin();
-       i != pairs.end() && (i + 1) != pairs.end();) {
+  for (auto i = pairs.begin(); i != pairs.end() && (i + 1) != pairs.end();) {
     const std::string& depender = *i++;
     const std::string& dependee = *i++;
 
@@ -2019,10 +2017,9 @@ std::string cmLocalUnixMakefileGenerator3::ConvertToQuotedOutputPath(
     if (components.size() > 1) {
       // Now add the rest of the components separated by the proper slash
       // direction for this platform.
-      std::vector<std::string>::const_iterator compEnd = std::remove(
-        components.begin() + 1, components.end() - 1, std::string());
-      std::vector<std::string>::const_iterator compStart =
-        components.begin() + 1;
+      auto compEnd = std::remove(components.begin() + 1, components.end() - 1,
+                                 std::string());
+      auto compStart = components.begin() + 1;
       result += cmJoin(cmMakeRange(compStart, compEnd), slash);
       // Only the last component can be empty to avoid double slashes.
       result += slash;

Source/cmMacroCommand.cxx

@@ -65,8 +65,7 @@ bool cmMacroHelperCommand::operator()(
   // set the value of argc
   std::string argcDef = std::to_string(expandedArgs.size());
 
-  std::vector<std::string>::const_iterator eit =
-    expandedArgs.begin() + (this->Args.size() - 1);
+  auto eit = expandedArgs.begin() + (this->Args.size() - 1);
   std::string expandedArgn = cmJoin(cmMakeRange(eit, expandedArgs.end()), ";");
   std::string expandedArgv = cmJoin(expandedArgs, ";");
   std::vector<std::string> variables;

Source/cmMakefile.cxx

@@ -751,9 +751,8 @@ cmMakefile::GetExportBuildFileGenerators() const
 void cmMakefile::RemoveExportBuildFileGeneratorCMP0024(
   cmExportBuildFileGenerator* gen)
 {
-  std::vector<cmExportBuildFileGenerator*>::iterator it =
-    std::find(this->ExportBuildFileGenerators.begin(),
-              this->ExportBuildFileGenerators.end(), gen);
+  auto it = std::find(this->ExportBuildFileGenerators.begin(),
+                      this->ExportBuildFileGenerators.end(), gen);
   if (it != this->ExportBuildFileGenerators.end()) {
     this->ExportBuildFileGenerators.erase(it);
   }
@@ -829,7 +828,7 @@ void cmMakefile::AddCustomCommandToTarget(
   bool command_expand_lists, ObjectLibraryCommands objLibraryCommands)
 {
   // Find the target to which to add the custom command.
-  cmTargetMap::iterator ti = this->Targets.find(target);
+  auto ti = this->Targets.find(target);
 
   if (ti == this->Targets.end()) {
     MessageType messageType = MessageType::AUTHOR_WARNING;
@@ -1034,7 +1033,7 @@ void cmMakefile::UpdateOutputToSourceMap(
 void cmMakefile::UpdateOutputToSourceMap(std::string const& output,
                                          cmSourceFile* source)
 {
-  OutputToSourceMap::iterator i = this->OutputToSource.find(output);
+  auto i = this->OutputToSource.find(output);
   if (i != this->OutputToSource.end()) {
     // Multiple custom commands produce the same output but may
     // be attached to a different source file (MAIN_DEPENDENCY).
@@ -1110,7 +1109,7 @@ void cmMakefile::AddCustomCommandOldStyle(
     // then add the source to the target to make sure the rule is
     // included.
     if (sf && !sf->GetPropertyAsBool("__CMAKE_RULE")) {
-      cmTargetMap::iterator ti = this->Targets.find(target);
+      auto ti = this->Targets.find(target);
       if (ti != this->Targets.end()) {
         ti->second.AddSource(sf->ResolveFullPath());
       } else {
@@ -1355,9 +1354,8 @@ bool cmMakefile::ParseDefineFlag(std::string const& def, bool remove)
       std::vector<std::string> defs = cmExpandedList(cdefs);
 
       // Recompose the list without the definition.
-      std::vector<std::string>::const_iterator defEnd =
-        std::remove(defs.begin(), defs.end(), define);
-      std::vector<std::string>::const_iterator defBegin = defs.begin();
+      auto defEnd = std::remove(defs.begin(), defs.end(), define);
+      auto defBegin = defs.begin();
       std::string ndefs = cmJoin(cmMakeRange(defBegin, defEnd), ";");
 
       // Store the new list.
@@ -1640,7 +1638,7 @@ void cmMakefile::Configure()
   std::vector<cmMakefile*> subdirs = this->UnConfiguredDirectories;
 
   // for each subdir recurse
-  std::vector<cmMakefile*>::iterator sdi = subdirs.begin();
+  auto sdi = subdirs.begin();
   for (; sdi != subdirs.end(); ++sdi) {
     (*sdi)->StateSnapshot.InitializeFromParent_ForSubdirsCommand();
     this->ConfigureSubDirectory(*sdi);
@@ -1954,8 +1952,7 @@ void cmMakefile::AddGlobalLinkInformation(cmTarget& target)
   if (const char* linkLibsProp = this->GetProperty("LINK_LIBRARIES")) {
     std::vector<std::string> linkLibs = cmExpandedList(linkLibsProp);
 
-    for (std::vector<std::string>::iterator j = linkLibs.begin();
-         j != linkLibs.end(); ++j) {
+    for (auto j = linkLibs.begin(); j != linkLibs.end(); ++j) {
       std::string libraryName = *j;
       cmTargetLinkLibraryType libType = GENERAL_LibraryType;
       if (libraryName == "optimized") {
@@ -2024,7 +2021,7 @@ cmTarget* cmMakefile::AddExecutable(const std::string& exeName,
 cmTarget* cmMakefile::AddNewTarget(cmStateEnums::TargetType type,
                                    const std::string& name)
 {
-  cmTargetMap::iterator it =
+  auto it =
     this->Targets
       .emplace(name, cmTarget(name, type, cmTarget::VisibilityNormal, this))
       .first;
@@ -2071,7 +2068,7 @@ cmSourceFile* cmMakefile::GetSourceFileWithOutput(
     return this->LinearGetSourceFileWithOutput(name);
   }
   // Otherwise we use an efficient lookup map.
-  OutputToSourceMap::const_iterator o = this->OutputToSource.find(name);
+  auto o = this->OutputToSource.find(name);
   if (o != this->OutputToSource.end()) {
     return (*o).second;
   }
@@ -2188,8 +2185,7 @@ cmSourceGroup* cmMakefile::FindSourceGroup(
   const std::string& source, std::vector<cmSourceGroup>& groups) const
 {
   // First search for a group that lists the file explicitly.
-  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
-       sg != groups.rend(); ++sg) {
+  for (auto sg = groups.rbegin(); sg != groups.rend(); ++sg) {
     cmSourceGroup* result = sg->MatchChildrenFiles(source);
     if (result) {
       return result;
@@ -2197,8 +2193,7 @@ cmSourceGroup* cmMakefile::FindSourceGroup(
   }
 
   // Now search for a group whose regex matches the file.
-  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
-       sg != groups.rend(); ++sg) {
+  for (auto sg = groups.rbegin(); sg != groups.rend(); ++sg) {
     cmSourceGroup* result = sg->MatchChildrenRegex(source);
     if (result) {
       return result;
@@ -2281,8 +2276,7 @@ void cmMakefile::ExpandVariablesCMP0019()
   if (const char* linkLibsProp = this->GetProperty("LINK_LIBRARIES")) {
     std::vector<std::string> linkLibs = cmExpandedList(linkLibsProp);
 
-    for (std::vector<std::string>::iterator l = linkLibs.begin();
-         l != linkLibs.end(); ++l) {
+    for (auto l = linkLibs.begin(); l != linkLibs.end(); ++l) {
       std::string libName = *l;
       if (libName == "optimized") {
         ++l;
@@ -3841,7 +3835,7 @@ std::vector<std::string> cmMakefile::GetPropertyKeys() const
 
 cmTarget* cmMakefile::FindLocalNonAliasTarget(const std::string& name) const
 {
-  cmTargetMap::iterator i = this->Targets.find(name);
+  auto i = this->Targets.find(name);
   if (i != this->Targets.end()) {
     return &i->second;
   }
@@ -3862,8 +3856,7 @@ cmTest* cmMakefile::CreateTest(const std::string& testName)
 
 cmTest* cmMakefile::GetTest(const std::string& testName) const
 {
-  std::map<std::string, cmTest*>::const_iterator mi =
-    this->Tests.find(testName);
+  auto mi = this->Tests.find(testName);
   if (mi != this->Tests.end()) {
     return mi->second;
   }
@@ -3908,7 +3901,7 @@ std::string cmMakefile::FormatListFileStack() const
   std::ostringstream tmp;
   size_t depth = listFiles.size();
   if (depth > 0) {
-    std::vector<std::string>::const_iterator it = listFiles.end();
+    auto it = listFiles.end();
     do {
       if (depth != listFiles.size()) {
         tmp << "\n                ";
@@ -3995,7 +3988,7 @@ cmTarget* cmMakefile::FindTargetToUse(const std::string& name,
 {
   // Look for an imported target.  These take priority because they
   // are more local in scope and do not have to be globally unique.
-  TargetMap::const_iterator imported = this->ImportedTargets.find(name);
+  auto imported = this->ImportedTargets.find(name);
   if (imported != this->ImportedTargets.end()) {
     return imported->second;
   }

Source/cmMakefileLibraryTargetGenerator.cxx

@@ -837,7 +837,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       }
 
       // Create the archive with the first set of objects.
-      std::vector<std::string>::iterator osi = object_strings.begin();
+      auto osi = object_strings.begin();
       {
         vars.Objects = osi->c_str();
         for (std::string const& acc : archiveCreateCommands) {

Source/cmOrderDirectories.cxx

@@ -128,7 +128,7 @@ bool cmOrderDirectoriesConstraint::FileMayConflict(std::string const& dir,
   // Check if the file will be built by cmake.
   std::set<std::string> const& files =
     (this->GlobalGenerator->GetDirectoryContent(dir, false));
-  std::set<std::string>::const_iterator fi = files.find(name);
+  auto fi = files.find(name);
   return fi != files.end();
 }
 
@@ -186,9 +186,9 @@ bool cmOrderDirectoriesConstraintSOName::FindConflict(std::string const& dir)
     // know the soname just look at all files that start with the
     // file name.  Usually the soname starts with the library name.
     std::string base = this->FileName;
-    std::set<std::string>::const_iterator first = files.lower_bound(base);
+    auto first = files.lower_bound(base);
     ++base.back();
-    std::set<std::string>::const_iterator last = files.upper_bound(base);
+    auto last = files.upper_bound(base);
     if (first != last) {
       return true;
     }
@@ -380,7 +380,7 @@ void cmOrderDirectories::CollectOriginalDirectories()
 int cmOrderDirectories::AddOriginalDirectory(std::string const& dir)
 {
   // Add the runtime directory with a unique index.
-  std::map<std::string, int>::iterator i = this->DirectoryIndex.find(dir);
+  auto i = this->DirectoryIndex.find(dir);
   if (i == this->DirectoryIndex.end()) {
     std::map<std::string, int>::value_type entry(
       dir, static_cast<int>(this->OriginalDirectories.size()));
@@ -441,8 +441,7 @@ void cmOrderDirectories::FindConflicts()
     std::sort(cl.begin(), cl.end());
 
     // Make the edge list unique so cycle detection will be reliable.
-    ConflictList::iterator last =
-      std::unique(cl.begin(), cl.end(), cmOrderDirectoriesCompare());
+    auto last = std::unique(cl.begin(), cl.end(), cmOrderDirectoriesCompare());
     cl.erase(last, cl.end());
   }
 
@@ -553,8 +552,7 @@ bool cmOrderDirectories::IsSameDirectory(std::string const& l,
 
 std::string const& cmOrderDirectories::GetRealPath(std::string const& dir)
 {
-  std::map<std::string, std::string>::iterator i =
-    this->RealPaths.lower_bound(dir);
+  auto i = this->RealPaths.lower_bound(dir);
   if (i == this->RealPaths.end() ||
       this->RealPaths.key_comp()(dir, i->first)) {
     using value_type = std::map<std::string, std::string>::value_type;

Source/cmOutputRequiredFilesCommand.cxx

@@ -367,8 +367,7 @@ protected:
     std::string fullPath = this->FullPath(file, extraPath);
 
     // Try to find the file's instance of cmDependInformation.
-    DependInformationMapType::const_iterator result =
-      this->DependInformationMap.find(fullPath);
+    auto result = this->DependInformationMap.find(fullPath);
     if (result != this->DependInformationMap.end()) {
       // Found an instance, return it.
       return result->second;
@@ -398,7 +397,7 @@ protected:
 
     if (m != this->DirectoryToFileToPathMap.end()) {
       FileToPathMapType& map = m->second;
-      FileToPathMapType::iterator p = map.find(fname);
+      auto p = map.find(fname);
       if (p != map.end()) {
         return p->second;
       }

Source/cmParseArgumentsCommand.cxx

@@ -116,8 +116,8 @@ bool cmParseArgumentsCommand(std::vector<std::string> const& args,
     return false;
   }
 
-  std::vector<std::string>::const_iterator argIter = args.begin();
-  std::vector<std::string>::const_iterator argEnd = args.end();
+  auto argIter = args.begin();
+  auto argEnd = args.end();
   bool parseFromArgV = false;
   unsigned long argvStart = 0;
   if (*argIter == "PARSE_ARGV") {

Source/cmPropertyDefinitionMap.cxx

@@ -10,7 +10,7 @@ void cmPropertyDefinitionMap::DefineProperty(const std::string& name,
                                              const char* FullDescription,
                                              bool chain)
 {
-  cmPropertyDefinitionMap::iterator it = this->find(name);
+  auto it = this->find(name);
   cmPropertyDefinition* prop;
   if (it == this->end()) {
     prop = &(*this)[name];
@@ -26,7 +26,7 @@ bool cmPropertyDefinitionMap::IsPropertyDefined(const std::string& name) const
 
 bool cmPropertyDefinitionMap::IsPropertyChained(const std::string& name) const
 {
-  cmPropertyDefinitionMap::const_iterator it = this->find(name);
+  auto it = this->find(name);
   if (it == this->end()) {
     return false;
   }

Source/cmQtAutoGen.cxx

@@ -24,8 +24,6 @@ void MergeOptions(std::vector<std::string>& baseOpts,
                   std::vector<std::string> const& newOpts,
                   std::initializer_list<cm::string_view> valueOpts, bool isQt5)
 {
-  using Iter = std::vector<std::string>::iterator;
-  using CIter = std::vector<std::string>::const_iterator;
   if (newOpts.empty()) {
     return;
   }
@@ -35,10 +33,10 @@ void MergeOptions(std::vector<std::string>& baseOpts,
   }
 
   std::vector<std::string> extraOpts;
-  for (CIter fit = newOpts.begin(), fitEnd = newOpts.end(); fit != fitEnd;
+  for (auto fit = newOpts.begin(), fitEnd = newOpts.end(); fit != fitEnd;
        ++fit) {
     std::string const& newOpt = *fit;
-    Iter existIt = std::find(baseOpts.begin(), baseOpts.end(), newOpt);
+    auto existIt = std::find(baseOpts.begin(), baseOpts.end(), newOpt);
     if (existIt != baseOpts.end()) {
       if (newOpt.size() >= 2) {
         // Acquire the option name
@@ -55,8 +53,8 @@ void MergeOptions(std::vector<std::string>& baseOpts,
         }
         // Test if this is a value option and change the existing value
         if (!optName.empty() && cmContains(valueOpts, optName)) {
-          const Iter existItNext(existIt + 1);
-          const CIter fitNext(fit + 1);
+          const auto existItNext(existIt + 1);
+          const auto fitNext(fit + 1);
           if ((existItNext != baseOpts.end()) && (fitNext != fitEnd)) {
             *existItNext = *fitNext;
             ++fit;

Source/cmQtAutoMocUic.cxx

@@ -1797,7 +1797,7 @@ bool cmQtAutoMocUic::Init(cmMakefile* makefile)
           BaseConst().ProjectBinaryDir, BaseConst().ProjectSourceDir
         };
         for (cm::string_view const& ppath : movePaths) {
-          std::list<std::string>::iterator it = includes.begin();
+          auto it = includes.begin();
           while (it != includes.end()) {
             std::string const& path = *it;
             if (cmHasPrefix(path, ppath)) {

Source/cmRST.cxx

@@ -320,8 +320,7 @@ std::string cmRST::ReplaceSubstitutions(std::string const& line)
     std::string::size_type start = this->Substitution.start(2);
     std::string::size_type end = this->Substitution.end(2);
     std::string substitute = this->Substitution.match(3);
-    std::map<std::string, std::string>::iterator replace =
-      this->Replace.find(substitute);
+    auto replace = this->Replace.find(substitute);
     if (replace != this->Replace.end()) {
       std::pair<std::set<std::string>::iterator, bool> replaced =
         this->Replaced.insert(substitute);
@@ -451,10 +450,10 @@ void cmRST::UnindentLines(std::vector<std::string>& lines)
     }
   }
 
-  std::vector<std::string>::const_iterator it = lines.begin();
+  auto it = lines.cbegin();
   size_t leadingEmpty = std::distance(it, cmFindNot(lines, std::string()));
 
-  std::vector<std::string>::const_reverse_iterator rit = lines.rbegin();
+  auto rit = lines.crbegin();
   size_t trailingEmpty =
     std::distance(rit, cmFindNot(cmReverseRange(lines), std::string()));
 
@@ -464,7 +463,7 @@ void cmRST::UnindentLines(std::vector<std::string>& lines)
     return;
   }
 
-  std::vector<std::string>::iterator contentEnd = cmRotate(
-    lines.begin(), lines.begin() + leadingEmpty, lines.end() - trailingEmpty);
+  auto contentEnd = cmRotate(lines.begin(), lines.begin() + leadingEmpty,
+                             lines.end() - trailingEmpty);
   lines.erase(contentEnd, lines.end());
 }

Source/cmRulePlaceholderExpander.cxx

@@ -235,8 +235,7 @@ std::string cmRulePlaceholderExpander::ExpandRuleVariable(
       cmOutputConverter::SHELL);
   }
 
-  std::map<std::string, std::string>::iterator compIt =
-    this->Compilers.find(variable);
+  auto compIt = this->Compilers.find(variable);
 
   if (compIt != this->Compilers.end()) {
     std::string ret = outputConverter->ConvertToOutputForExisting(
@@ -292,8 +291,7 @@ std::string cmRulePlaceholderExpander::ExpandRuleVariable(
     return ret;
   }
 
-  std::map<std::string, std::string>::iterator mapIt =
-    this->VariableMappings.find(variable);
+  auto mapIt = this->VariableMappings.find(variable);
   if (mapIt != this->VariableMappings.end()) {
     if (variable.find("_FLAG") == std::string::npos) {
       return outputConverter->ConvertToOutputForExisting(mapIt->second);

Source/cmSetPropertyCommand.cxx

@@ -375,8 +375,7 @@ bool HandleTestMode(cmExecutionStatus& status, std::set<std::string>& names,
 {
   // Look for tests with all names given.
   std::set<std::string>::iterator next;
-  for (std::set<std::string>::iterator ni = names.begin(); ni != names.end();
-       ni = next) {
+  for (auto ni = names.begin(); ni != names.end(); ni = next) {
     next = ni;
     ++next;
     if (cmTest* test = status.GetMakefile().GetTest(*ni)) {

Source/cmSourceGroupCommand.cxx

@@ -284,8 +284,7 @@ bool cmSourceGroupCommand::checkSingleParameterArgumentPreconditions(
   const std::string& argument, const ParsedArguments& parsedArguments,
   std::string& errorMsg) const
 {
-  ParsedArguments::const_iterator foundArgument =
-    parsedArguments.find(argument);
+  auto foundArgument = parsedArguments.find(argument);
   if (foundArgument != parsedArguments.end()) {
     const std::vector<std::string>& optionArguments = foundArgument->second;
 

Source/cmState.cxx

@@ -350,8 +350,7 @@ cmPropertyDefinition const* cmState::GetPropertyDefinition(
 bool cmState::IsPropertyDefined(const std::string& name,
                                 cmProperty::ScopeType scope) const
 {
-  std::map<cmProperty::ScopeType, cmPropertyDefinitionMap>::const_iterator it =
-    this->PropertyDefinitions.find(scope);
+  auto it = this->PropertyDefinitions.find(scope);
   if (it == this->PropertyDefinitions.end()) {
     return false;
   }
@@ -361,8 +360,7 @@ bool cmState::IsPropertyDefined(const std::string& name,
 bool cmState::IsPropertyChained(const std::string& name,
                                 cmProperty::ScopeType scope) const
 {
-  std::map<cmProperty::ScopeType, cmPropertyDefinitionMap>::const_iterator it =
-    this->PropertyDefinitions.find(scope);
+  auto it = this->PropertyDefinitions.find(scope);
   if (it == this->PropertyDefinitions.end()) {
     return false;
   }
@@ -371,8 +369,8 @@ bool cmState::IsPropertyChained(const std::string& name,
 
 void cmState::SetLanguageEnabled(std::string const& l)
 {
-  std::vector<std::string>::iterator it = std::lower_bound(
-    this->EnabledLanguages.begin(), this->EnabledLanguages.end(), l);
+  auto it = std::lower_bound(this->EnabledLanguages.begin(),
+                             this->EnabledLanguages.end(), l);
   if (it == this->EnabledLanguages.end() || *it != l) {
     this->EnabledLanguages.insert(it, l);
   }

Source/cmStateDirectory.cxx

@@ -175,11 +175,9 @@ cmStateDirectory::cmStateDirectory(
 template <typename T, typename U>
 cmStringRange GetPropertyContent(T const& content, U contentEndPosition)
 {
-  std::vector<std::string>::const_iterator end =
-    content.begin() + contentEndPosition;
+  auto end = content.begin() + contentEndPosition;
 
-  std::vector<std::string>::const_reverse_iterator rbegin =
-    cmMakeReverseIterator(end);
+  auto rbegin = cmMakeReverseIterator(end);
   rbegin = std::find(rbegin, content.rend(), cmPropertySentinal);
 
   return cmMakeRange(rbegin.base(), end);
@@ -189,17 +187,14 @@ template <typename T, typename U, typename V>
 cmBacktraceRange GetPropertyBacktraces(T const& content, U const& backtraces,
                                        V contentEndPosition)
 {
-  std::vector<std::string>::const_iterator entryEnd =
-    content.begin() + contentEndPosition;
+  auto entryEnd = content.begin() + contentEndPosition;
 
-  std::vector<std::string>::const_reverse_iterator rbegin =
-    cmMakeReverseIterator(entryEnd);
+  auto rbegin = cmMakeReverseIterator(entryEnd);
   rbegin = std::find(rbegin, content.rend(), cmPropertySentinal);
 
-  std::vector<cmListFileBacktrace>::const_iterator it =
-    backtraces.begin() + std::distance(content.begin(), rbegin.base());
+  auto it = backtraces.begin() + std::distance(content.begin(), rbegin.base());
 
-  std::vector<cmListFileBacktrace>::const_iterator end = backtraces.end();
+  auto end = backtraces.end();
   return cmMakeRange(it, end);
 }
 
@@ -271,22 +266,17 @@ void cmStateDirectory::AppendIncludeDirectoriesEntry(
 void cmStateDirectory::PrependIncludeDirectoriesEntry(
   const std::string& vec, const cmListFileBacktrace& lfbt)
 {
-  std::vector<std::string>::iterator entryEnd =
-    this->DirectoryState->IncludeDirectories.begin() +
+  auto entryEnd = this->DirectoryState->IncludeDirectories.begin() +
     this->Snapshot_.Position->IncludeDirectoryPosition;
 
-  std::vector<std::string>::reverse_iterator rend =
-    this->DirectoryState->IncludeDirectories.rend();
-  std::vector<std::string>::reverse_iterator rbegin =
-    cmMakeReverseIterator(entryEnd);
+  auto rend = this->DirectoryState->IncludeDirectories.rend();
+  auto rbegin = cmMakeReverseIterator(entryEnd);
   rbegin = std::find(rbegin, rend, cmPropertySentinal);
 
-  std::vector<std::string>::iterator entryIt = rbegin.base();
-  std::vector<std::string>::iterator entryBegin =
-    this->DirectoryState->IncludeDirectories.begin();
+  auto entryIt = rbegin.base();
+  auto entryBegin = this->DirectoryState->IncludeDirectories.begin();
 
-  std::vector<cmListFileBacktrace>::iterator btIt =
-    this->DirectoryState->IncludeDirectoryBacktraces.begin() +
+  auto btIt = this->DirectoryState->IncludeDirectoryBacktraces.begin() +
     std::distance(entryBegin, entryIt);
 
   this->DirectoryState->IncludeDirectories.insert(entryIt, vec);
@@ -446,22 +436,17 @@ void cmStateDirectory::AppendLinkDirectoriesEntry(
 void cmStateDirectory::PrependLinkDirectoriesEntry(
   const std::string& vec, const cmListFileBacktrace& lfbt)
 {
-  std::vector<std::string>::iterator entryEnd =
-    this->DirectoryState->LinkDirectories.begin() +
+  auto entryEnd = this->DirectoryState->LinkDirectories.begin() +
     this->Snapshot_.Position->LinkDirectoriesPosition;
 
-  std::vector<std::string>::reverse_iterator rend =
-    this->DirectoryState->LinkDirectories.rend();
-  std::vector<std::string>::reverse_iterator rbegin =
-    cmMakeReverseIterator(entryEnd);
+  auto rend = this->DirectoryState->LinkDirectories.rend();
+  auto rbegin = cmMakeReverseIterator(entryEnd);
   rbegin = std::find(rbegin, rend, cmPropertySentinal);
 
-  std::vector<std::string>::iterator entryIt = rbegin.base();
-  std::vector<std::string>::iterator entryBegin =
-    this->DirectoryState->LinkDirectories.begin();
+  auto entryIt = rbegin.base();
+  auto entryBegin = this->DirectoryState->LinkDirectories.begin();
 
-  std::vector<cmListFileBacktrace>::iterator btIt =
-    this->DirectoryState->LinkDirectoriesBacktraces.begin() +
+  auto btIt = this->DirectoryState->LinkDirectoriesBacktraces.begin() +
     std::distance(entryBegin, entryIt);
 
   this->DirectoryState->LinkDirectories.insert(entryIt, vec);

Source/cmStateSnapshot.cxx

@@ -276,22 +276,18 @@ void InitializeContentFromParent(T& parentContent, T& thisContent,
                                  U& parentBacktraces, U& thisBacktraces,
                                  V& contentEndPosition)
 {
-  std::vector<std::string>::const_iterator parentBegin = parentContent.begin();
-  std::vector<std::string>::const_iterator parentEnd = parentContent.end();
+  auto parentBegin = parentContent.begin();
+  auto parentEnd = parentContent.end();
 
-  std::vector<std::string>::const_reverse_iterator parentRbegin =
-    cmMakeReverseIterator(parentEnd);
-  std::vector<std::string>::const_reverse_iterator parentRend =
-    parentContent.rend();
+  auto parentRbegin = cmMakeReverseIterator(parentEnd);
+  auto parentRend = parentContent.rend();
   parentRbegin = std::find(parentRbegin, parentRend, cmPropertySentinal);
-  std::vector<std::string>::const_iterator parentIt = parentRbegin.base();
+  auto parentIt = parentRbegin.base();
 
   thisContent = std::vector<std::string>(parentIt, parentEnd);
 
-  std::vector<cmListFileBacktrace>::const_iterator btIt =
-    parentBacktraces.begin() + std::distance(parentBegin, parentIt);
-  std::vector<cmListFileBacktrace>::const_iterator btEnd =
-    parentBacktraces.end();
+  auto btIt = parentBacktraces.begin() + std::distance(parentBegin, parentIt);
+  auto btEnd = parentBacktraces.end();
 
   thisBacktraces = std::vector<cmListFileBacktrace>(btIt, btEnd);
 

Source/cmSystemTools.cxx

@@ -1633,8 +1633,8 @@ int cmSystemTools::WaitForLine(cmsysProcess* process, std::string& line,
                                std::vector<char>& err)
 {
   line.clear();
-  std::vector<char>::iterator outiter = out.begin();
-  std::vector<char>::iterator erriter = err.begin();
+  auto outiter = out.begin();
+  auto erriter = err.begin();
   cmProcessOutput processOutput;
   std::string strdata;
   while (true) {
@@ -2540,8 +2540,7 @@ bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
 
     // Adjust the entry list as necessary to remove the run path
     unsigned long entriesErased = 0;
-    for (cmELF::DynamicEntryList::iterator it = dentries.begin();
-         it != dentries.end();) {
+    for (auto it = dentries.begin(); it != dentries.end();) {
       if (it->first == cmELF::TagRPath || it->first == cmELF::TagRunPath) {
         it = dentries.erase(it);
         entriesErased++;

Source/cmTarget.cxx

@@ -1361,13 +1361,11 @@ void cmTarget::AppendBuildInterfaceIncludes()
 void cmTarget::InsertInclude(std::string const& entry,
                              cmListFileBacktrace const& bt, bool before)
 {
-  std::vector<std::string>::iterator position = before
-    ? impl->IncludeDirectoriesEntries.begin()
-    : impl->IncludeDirectoriesEntries.end();
+  auto position = before ? impl->IncludeDirectoriesEntries.begin()
+                         : impl->IncludeDirectoriesEntries.end();
 
-  std::vector<cmListFileBacktrace>::iterator btPosition = before
-    ? impl->IncludeDirectoriesBacktraces.begin()
-    : impl->IncludeDirectoriesBacktraces.end();
+  auto btPosition = before ? impl->IncludeDirectoriesBacktraces.begin()
+                           : impl->IncludeDirectoriesBacktraces.end();
 
   impl->IncludeDirectoriesEntries.insert(position, entry);
   impl->IncludeDirectoriesBacktraces.insert(btPosition, bt);
@@ -1376,13 +1374,11 @@ void cmTarget::InsertInclude(std::string const& entry,
 void cmTarget::InsertCompileOption(std::string const& entry,
                                    cmListFileBacktrace const& bt, bool before)
 {
-  std::vector<std::string>::iterator position = before
-    ? impl->CompileOptionsEntries.begin()
-    : impl->CompileOptionsEntries.end();
+  auto position = before ? impl->CompileOptionsEntries.begin()
+                         : impl->CompileOptionsEntries.end();
 
-  std::vector<cmListFileBacktrace>::iterator btPosition = before
-    ? impl->CompileOptionsBacktraces.begin()
-    : impl->CompileOptionsBacktraces.end();
+  auto btPosition = before ? impl->CompileOptionsBacktraces.begin()
+                           : impl->CompileOptionsBacktraces.end();
 
   impl->CompileOptionsEntries.insert(position, entry);
   impl->CompileOptionsBacktraces.insert(btPosition, bt);
@@ -1398,12 +1394,11 @@ void cmTarget::InsertCompileDefinition(std::string const& entry,
 void cmTarget::InsertLinkOption(std::string const& entry,
                                 cmListFileBacktrace const& bt, bool before)
 {
-  std::vector<std::string>::iterator position =
+  auto position =
     before ? impl->LinkOptionsEntries.begin() : impl->LinkOptionsEntries.end();
 
-  std::vector<cmListFileBacktrace>::iterator btPosition = before
-    ? impl->LinkOptionsBacktraces.begin()
-    : impl->LinkOptionsBacktraces.end();
+  auto btPosition = before ? impl->LinkOptionsBacktraces.begin()
+                           : impl->LinkOptionsBacktraces.end();
 
   impl->LinkOptionsEntries.insert(position, entry);
   impl->LinkOptionsBacktraces.insert(btPosition, bt);
@@ -1412,13 +1407,11 @@ void cmTarget::InsertLinkOption(std::string const& entry,
 void cmTarget::InsertLinkDirectory(std::string const& entry,
                                    cmListFileBacktrace const& bt, bool before)
 {
-  std::vector<std::string>::iterator position = before
-    ? impl->LinkDirectoriesEntries.begin()
-    : impl->LinkDirectoriesEntries.end();
+  auto position = before ? impl->LinkDirectoriesEntries.begin()
+                         : impl->LinkDirectoriesEntries.end();
 
-  std::vector<cmListFileBacktrace>::iterator btPosition = before
-    ? impl->LinkDirectoriesBacktraces.begin()
-    : impl->LinkDirectoriesBacktraces.end();
+  auto btPosition = before ? impl->LinkDirectoriesBacktraces.begin()
+                           : impl->LinkDirectoriesBacktraces.end();
 
   impl->LinkDirectoriesEntries.insert(position, entry);
   impl->LinkDirectoriesBacktraces.insert(btPosition, bt);
@@ -1496,8 +1489,7 @@ static void cmTargetCheckIMPORTED_GLOBAL(const cmTarget* target,
                                          cmMakefile* context)
 {
   std::vector<cmTarget*> targets = context->GetOwnedImportedTargets();
-  std::vector<cmTarget*>::const_iterator it =
-    std::find(targets.begin(), targets.end(), target);
+  auto it = std::find(targets.begin(), targets.end(), target);
   if (it == targets.end()) {
     std::ostringstream e;
     e << "Attempt to promote imported target \"" << target->GetName()
@@ -1947,7 +1939,7 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
     (this->IsAIX() && this->IsExecutableWithExports());
 
   // If a mapping was found, check its configurations.
-  for (std::vector<std::string>::const_iterator mci = mappedConfigs.begin();
+  for (auto mci = mappedConfigs.begin();
        !*loc && !*imp && mci != mappedConfigs.end(); ++mci) {
     // Look for this configuration.
     if (mci->empty()) {
@@ -2018,8 +2010,7 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
     if (const char* iconfigs = this->GetProperty("IMPORTED_CONFIGURATIONS")) {
       cmExpandList(iconfigs, availableConfigs);
     }
-    for (std::vector<std::string>::const_iterator aci =
-           availableConfigs.begin();
+    for (auto aci = availableConfigs.begin();
          !*loc && !*imp && aci != availableConfigs.end(); ++aci) {
       suffix = cmStrCat('_', cmSystemTools::UpperCase(*aci));
       std::string locProp = cmStrCat(locPropBase, suffix);

Source/cmUtilitySourceCommand.cxx

@@ -20,7 +20,7 @@ bool cmUtilitySourceCommand(std::vector<std::string> const& args,
     return false;
   }
 
-  std::vector<std::string>::const_iterator arg = args.begin();
+  auto arg = args.begin();
 
   // The first argument is the cache entry name.
   std::string const& cacheEntry = *arg++;

Source/cmVariableWatch.cxx

@@ -66,8 +66,7 @@ bool cmVariableWatch::VariableAccessed(const std::string& variable,
                                        int access_type, const char* newValue,
                                        const cmMakefile* mf) const
 {
-  cmVariableWatch::StringToVectorOfPairs::const_iterator mit =
-    this->WatchMap.find(variable);
+  auto mit = this->WatchMap.find(variable);
   if (mit != this->WatchMap.end()) {
     // The strategy here is to copy the list of callbacks, and ignore
     // new callbacks that existing ones may add.

Source/cmWriteFileCommand.cxx

@@ -19,7 +19,7 @@ bool cmWriteFileCommand(std::vector<std::string> const& args,
     return false;
   }
   std::string message;
-  std::vector<std::string>::const_iterator i = args.begin();
+  auto i = args.begin();
 
   std::string const& fileName = *i;
   bool overwrite = true;

Source/cmXCodeObject.h

@@ -106,8 +106,7 @@ public:
   bool HasComment() const { return (!this->Comment.empty()); }
   cmXCodeObject* GetObject(const char* name) const
   {
-    std::map<std::string, cmXCodeObject*>::const_iterator i =
-      this->ObjectAttributes.find(name);
+    auto const i = this->ObjectAttributes.find(name);
     if (i != this->ObjectAttributes.end()) {
       return i->second;
     }

Source/cmake.cxx

@@ -1271,8 +1271,7 @@ int cmake::HandleDeleteCacheVariables(const std::string& var)
     << "Configure will be re-run and you may have to reset some variables.\n"
     << "The following variables have changed:\n";
   /* clang-format on */
-  for (std::vector<std::string>::iterator i = argsSplit.begin();
-       i != argsSplit.end(); ++i) {
+  for (auto i = argsSplit.begin(); i != argsSplit.end(); ++i) {
     SaveCacheEntry save;
     save.key = *i;
     warning << *i << "= ";
@@ -2188,7 +2187,7 @@ int cmake::CheckBuildSystem()
   }
 
   // Find the newest dependency.
-  std::vector<std::string>::iterator dep = depends.begin();
+  auto dep = depends.begin();
   std::string dep_newest = *dep++;
   for (; dep != depends.end(); ++dep) {
     int result = 0;
@@ -2206,7 +2205,7 @@ int cmake::CheckBuildSystem()
   }
 
   // Find the oldest output.
-  std::vector<std::string>::iterator out = outputs.begin();
+  auto out = outputs.begin();
   std::string out_oldest = *out++;
   for (; out != outputs.end(); ++out) {
     int result = 0;
@@ -2308,8 +2307,7 @@ bool cmake::GetPropertyAsBool(const std::string& prop)
 cmInstalledFile* cmake::GetOrCreateInstalledFile(cmMakefile* mf,
                                                  const std::string& name)
 {
-  std::map<std::string, cmInstalledFile>::iterator i =
-    this->InstalledFiles.find(name);
+  auto i = this->InstalledFiles.find(name);
 
   if (i != this->InstalledFiles.end()) {
     cmInstalledFile& file = i->second;
@@ -2322,8 +2320,7 @@ cmInstalledFile* cmake::GetOrCreateInstalledFile(cmMakefile* mf,
 
 cmInstalledFile const* cmake::GetInstalledFile(const std::string& name) const
 {
-  std::map<std::string, cmInstalledFile>::const_iterator i =
-    this->InstalledFiles.find(name);
+  auto i = this->InstalledFiles.find(name);
 
   if (i != this->InstalledFiles.end()) {
     cmInstalledFile const& file = i->second;

Source/cmcmd.cxx

@@ -1730,7 +1730,7 @@ bool cmVSLink::Parse(std::vector<std::string>::const_iterator argBeg,
 {
   // Parse our own arguments.
   std::string intDir;
-  std::vector<std::string>::const_iterator arg = argBeg;
+  auto arg = argBeg;
   while (arg != argEnd && cmHasLiteralPrefix(*arg, "-")) {
     if (*arg == "--") {
       ++arg;

Tests/CMakeLib/run_compile_commands.cxx

@@ -18,7 +18,7 @@ public:
   public:
     std::string const& at(std::string const& k) const
     {
-      const_iterator i = this->find(k);
+      auto i = this->find(k);
       if (i != this->end()) {
         return i->second;
       }