diff --git a/.gitlab/rules.yml b/.gitlab/rules.yml
index 96b95c8..88756eb 100644
--- a/.gitlab/rules.yml
+++ b/.gitlab/rules.yml
@@ -12,7 +12,7 @@
 .run_automatically:
     rules:
         - if: '$CI_PROJECT_PATH == "cmake/cmake"'
-          when: always
+          when: on_success
         - if: '$CI_MERGE_REQUEST_ID'
-          when: always
+          when: on_success
         - when: never
diff --git a/Help/command/add_test.rst b/Help/command/add_test.rst
index c0677d2..a77ba37 100644
--- a/Help/command/add_test.rst
+++ b/Help/command/add_test.rst
@@ -10,9 +10,8 @@
            [WORKING_DIRECTORY <dir>]
            [COMMAND_EXPAND_LISTS])
 
-Adds a test called ``<name>``.  The test name may contain arbitrary
-characters except for double-quotes.  However, if it contains spaces
-or semicolons it must be enclosed in double-quotes.  The options are:
+Adds a test called ``<name>``.  The test name may not contain spaces,
+quotes, or other characters special in CMake syntax.  The options are:
 
 ``COMMAND``
   Specify the test command-line.  If ``<command>`` specifies an
diff --git a/Help/release/3.18.rst b/Help/release/3.18.rst
index 427840e..ba80d2b 100644
--- a/Help/release/3.18.rst
+++ b/Help/release/3.18.rst
@@ -332,3 +332,10 @@
   architecture (the Xcode ``ARCHS`` setting).  This is needed for Xcode 12
   to select the host's architecture, which older versions of Xcode did
   by default.
+
+* In CMake 3.18.0 the :command:`add_test` command learned to support
+  special characters in test names.  This was accidentally left out of
+  its release notes.  Unfortunately the fix breaks existing projects
+  that were using manual quoting or escaping to work around the prior
+  limitation.  This fix has been reverted in 3.18.1, but may be
+  re-introduced in future versions of CMake with a policy for compatibility.
diff --git a/Help/release/dev/EXCLUDE_FROM_ALL-genex.rst b/Help/release/dev/EXCLUDE_FROM_ALL-genex.rst
new file mode 100644
index 0000000..4d5a83c
--- /dev/null
+++ b/Help/release/dev/EXCLUDE_FROM_ALL-genex.rst
@@ -0,0 +1,5 @@
+EXCLUDE_FROM_ALL-genex
+----------------------
+
+* The :prop_tgt:`EXCLUDE_FROM_ALL` target property gained support for
+  :manual:`generator expressions <cmake-generator-expressions(7)>`.
diff --git a/Modules/CMakeDetermineCompiler.cmake b/Modules/CMakeDetermineCompiler.cmake
index 7cd7c47..cb1ab1d 100644
--- a/Modules/CMakeDetermineCompiler.cmake
+++ b/Modules/CMakeDetermineCompiler.cmake
@@ -140,7 +140,9 @@
       OUTPUT_VARIABLE _cmake_sysroot_run_out
       ERROR_VARIABLE _cmake_sysroot_run_err)
 
-    if(_cmake_sysroot_run_out AND NOT _cmake_sysroot_run_err AND IS_DIRECTORY "${_cmake_sysroot_run_out}/usr")
+    if(_cmake_sysroot_run_out AND NOT _cmake_sysroot_run_err
+        AND NOT _cmake_sysroot_run_out STREQUAL "/"
+        AND IS_DIRECTORY "${_cmake_sysroot_run_out}/usr")
       file(TO_CMAKE_PATH "${_cmake_sysroot_run_out}/usr" _cmake_sysroot_run_out_usr)
       set(CMAKE_${lang}_COMPILER_SYSROOT "${_cmake_sysroot_run_out_usr}" PARENT_SCOPE)
     else()
diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index 3a47090..aecc00b 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -1124,7 +1124,11 @@
     message(FATAL_ERROR "Tag for git checkout should not be empty.")
   endif()
 
-  set(git_clone_options "--no-checkout")
+  if(GIT_VERSION_STRING VERSION_LESS 2.20 OR 2.21 VERSION_LESS_EQUAL GIT_VERSION_STRING)
+    set(git_clone_options "--no-checkout")
+  else()
+    set(git_clone_options)
+  endif()
   if(git_shallow)
     if(NOT GIT_VERSION_STRING VERSION_LESS 1.7.10)
       list(APPEND git_clone_options "--depth 1 --no-single-branch")
diff --git a/Modules/FindXalanC.cmake b/Modules/FindXalanC.cmake
index ca9195c..a7fb766 100644
--- a/Modules/FindXalanC.cmake
+++ b/Modules/FindXalanC.cmake
@@ -49,9 +49,9 @@
 function(_XalanC_GET_VERSION  version_hdr)
     file(STRINGS ${version_hdr} _contents REGEX "^[ \t]*#define XALAN_VERSION_.*")
     if(_contents)
-        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" XalanC_MAJOR "${_contents}")
-        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" XalanC_MINOR "${_contents}")
-        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_REVISION[ \t]+([0-9]+).*" "\\1" XalanC_PATCH "${_contents}")
+        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_MAJOR[ \t(]+([0-9]+).*" "\\1" XalanC_MAJOR "${_contents}")
+        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_MINOR[ \t(]+([0-9]+).*" "\\1" XalanC_MINOR "${_contents}")
+        string(REGEX REPLACE "[^*]*#define XALAN_VERSION_REVISION[ \t(]+([0-9]+).*" "\\1" XalanC_PATCH "${_contents}")
 
         if(NOT XalanC_MAJOR MATCHES "^[0-9]+$")
             message(FATAL_ERROR "Version parsing failed for XALAN_VERSION_MAJOR!")
diff --git a/Source/CMakeVersion.cmake b/Source/CMakeVersion.cmake
index 0fea915..1dced9a 100644
--- a/Source/CMakeVersion.cmake
+++ b/Source/CMakeVersion.cmake
@@ -1,7 +1,7 @@
 # CMake version number components.
 set(CMake_VERSION_MAJOR 3)
 set(CMake_VERSION_MINOR 18)
-set(CMake_VERSION_PATCH 20200724)
+set(CMake_VERSION_PATCH 20200728)
 #set(CMake_VERSION_RC 0)
 set(CMake_VERSION_IS_DIRTY 0)
 
diff --git a/Source/CTest/cmCTestBuildAndTestHandler.cxx b/Source/CTest/cmCTestBuildAndTestHandler.cxx
index db426b2..a18cbb4 100644
--- a/Source/CTest/cmCTestBuildAndTestHandler.cxx
+++ b/Source/CTest/cmCTestBuildAndTestHandler.cxx
@@ -182,10 +182,9 @@
     std::vector<std::string> extraPaths;
     std::vector<std::string> failed;
     fullPath = cmCTestTestHandler::FindExecutable(
-      this->CTest, this->ConfigSample.c_str(), resultingConfig, extraPaths,
-      failed);
+      this->CTest, this->ConfigSample, resultingConfig, extraPaths, failed);
     if (!fullPath.empty() && !resultingConfig.empty()) {
-      this->CTest->SetConfigType(resultingConfig.c_str());
+      this->CTest->SetConfigType(resultingConfig);
     }
     out << "Using config sample with results: " << fullPath << " and "
         << resultingConfig << std::endl;
@@ -296,9 +295,8 @@
     extraPaths.push_back(tempPath);
   }
   std::vector<std::string> failed;
-  fullPath =
-    cmCTestTestHandler::FindExecutable(this->CTest, this->TestCommand.c_str(),
-                                       resultingConfig, extraPaths, failed);
+  fullPath = cmCTestTestHandler::FindExecutable(
+    this->CTest, this->TestCommand, resultingConfig, extraPaths, failed);
 
   if (!cmSystemTools::FileExists(fullPath)) {
     out << "Could not find path to executable, perhaps it was not built: "
diff --git a/Source/CTest/cmCTestBuildCommand.cxx b/Source/CTest/cmCTestBuildCommand.cxx
index 44fdc29..f33bdc4 100644
--- a/Source/CTest/cmCTestBuildCommand.cxx
+++ b/Source/CTest/cmCTestBuildCommand.cxx
@@ -12,6 +12,7 @@
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
 #include "cmMessageType.h"
+#include "cmProperty.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmake.h"
@@ -38,10 +39,9 @@
 
   this->Handler = handler;
 
-  const char* ctestBuildCommand =
-    this->Makefile->GetDefinition("CTEST_BUILD_COMMAND");
-  if (ctestBuildCommand && *ctestBuildCommand) {
-    this->CTest->SetCTestConfiguration("MakeCommand", ctestBuildCommand,
+  cmProp ctestBuildCommand = this->Makefile->GetDef("CTEST_BUILD_COMMAND");
+  if (cmNonempty(ctestBuildCommand)) {
+    this->CTest->SetCTestConfiguration("MakeCommand", *ctestBuildCommand,
                                        this->Quiet);
   } else {
     const char* cmakeGeneratorName =
@@ -108,7 +108,7 @@
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                          "SetMakeCommand:" << buildCommand << "\n",
                          this->Quiet);
-      this->CTest->SetCTestConfiguration("MakeCommand", buildCommand.c_str(),
+      this->CTest->SetCTestConfiguration("MakeCommand", buildCommand,
                                          this->Quiet);
     } else {
       std::ostringstream ostr;
@@ -123,16 +123,15 @@
     }
   }
 
-  if (const char* useLaunchers =
-        this->Makefile->GetDefinition("CTEST_USE_LAUNCHERS")) {
-    this->CTest->SetCTestConfiguration("UseLaunchers", useLaunchers,
+  if (cmProp useLaunchers = this->Makefile->GetDef("CTEST_USE_LAUNCHERS")) {
+    this->CTest->SetCTestConfiguration("UseLaunchers", *useLaunchers,
                                        this->Quiet);
   }
 
-  if (const char* labelsForSubprojects =
-        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+  if (cmProp labelsForSubprojects =
+        this->Makefile->GetDef("CTEST_LABELS_FOR_SUBPROJECTS")) {
     this->CTest->SetCTestConfiguration("LabelsForSubprojects",
-                                       labelsForSubprojects, this->Quiet);
+                                       *labelsForSubprojects, this->Quiet);
   }
 
   handler->SetQuiet(this->Quiet);
diff --git a/Source/CTest/cmCTestConfigureCommand.cxx b/Source/CTest/cmCTestConfigureCommand.cxx
index f42c3f1..8716b31 100644
--- a/Source/CTest/cmCTestConfigureCommand.cxx
+++ b/Source/CTest/cmCTestConfigureCommand.cxx
@@ -12,6 +12,7 @@
 #include "cmCTestConfigureHandler.h"
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
+#include "cmProperty.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmake.h"
@@ -38,12 +39,12 @@
     return nullptr;
   }
 
-  const char* ctestConfigureCommand =
-    this->Makefile->GetDefinition("CTEST_CONFIGURE_COMMAND");
+  cmProp ctestConfigureCommand =
+    this->Makefile->GetDef("CTEST_CONFIGURE_COMMAND");
 
-  if (ctestConfigureCommand && *ctestConfigureCommand) {
+  if (cmNonempty(ctestConfigureCommand)) {
     this->CTest->SetCTestConfiguration("ConfigureCommand",
-                                       ctestConfigureCommand, this->Quiet);
+                                       *ctestConfigureCommand, this->Quiet);
   } else {
     const char* cmakeGeneratorName =
       this->Makefile->GetDefinition("CTEST_CMAKE_GENERATOR");
@@ -125,8 +126,8 @@
       cmakeConfigureCommand += source_dir;
       cmakeConfigureCommand += "\"";
 
-      this->CTest->SetCTestConfiguration(
-        "ConfigureCommand", cmakeConfigureCommand.c_str(), this->Quiet);
+      this->CTest->SetCTestConfiguration("ConfigureCommand",
+                                         cmakeConfigureCommand, this->Quiet);
     } else {
       this->SetError(
         "Configure command is not specified. If this is a "
@@ -136,10 +137,10 @@
     }
   }
 
-  if (const char* labelsForSubprojects =
-        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+  if (cmProp labelsForSubprojects =
+        this->Makefile->GetDef("CTEST_LABELS_FOR_SUBPROJECTS")) {
     this->CTest->SetCTestConfiguration("LabelsForSubprojects",
-                                       labelsForSubprojects, this->Quiet);
+                                       *labelsForSubprojects, this->Quiet);
   }
 
   cmCTestConfigureHandler* handler = this->CTest->GetConfigureHandler();
diff --git a/Source/CTest/cmCTestCoverageHandler.cxx b/Source/CTest/cmCTestCoverageHandler.cxx
index b839c10..093b2d1 100644
--- a/Source/CTest/cmCTestCoverageHandler.cxx
+++ b/Source/CTest/cmCTestCoverageHandler.cxx
@@ -469,8 +469,8 @@
     }
 
     const std::string fileName = cmSystemTools::GetFilenameName(fullFileName);
-    std::string shortFileName =
-      this->CTest->GetShortPathToFile(fullFileName.c_str());
+    const std::string shortFileName =
+      this->CTest->GetShortPathToFile(fullFileName);
     const cmCTestCoverageHandlerContainer::SingleFileCoverageVector& fcov =
       file.second;
     covLogXML.StartElement("File");
@@ -538,7 +538,7 @@
     covSumXML.StartElement("File");
     covSumXML.Attribute("Name", fileName);
     covSumXML.Attribute("FullPath",
-                        this->CTest->GetShortPathToFile(fullFileName.c_str()));
+                        this->CTest->GetShortPathToFile(fullFileName));
     covSumXML.Attribute("Covered", tested + untested > 0 ? "true" : "false");
     covSumXML.Element("LOCTested", tested);
     covSumXML.Element("LOCUnTested", untested);
@@ -1887,8 +1887,8 @@
         // start the file output
         covLogXML.StartElement("File");
         covLogXML.Attribute("Name", i->first);
-        covLogXML.Attribute(
-          "FullPath", this->CTest->GetShortPathToFile(i->second.c_str()));
+        covLogXML.Attribute("FullPath",
+                            this->CTest->GetShortPathToFile(i->second));
         covLogXML.StartElement("Report");
         // write the bullseye header
         line = 0;
@@ -2064,8 +2064,7 @@
       total_untested += (totalFunctions - functionsCalled);
 
       std::string fileName = cmSystemTools::GetFilenameName(file);
-      std::string shortFileName =
-        this->CTest->GetShortPathToFile(file.c_str());
+      std::string shortFileName = this->CTest->GetShortPathToFile(file);
 
       float cper = static_cast<float>(percentBranch + percentFunction);
       if (totalBranches > 0) {
@@ -2266,7 +2265,7 @@
       // is the end of the target-wide labels.
       inTarget = false;
 
-      source = this->CTest->GetShortPathToFile(line.c_str());
+      source = this->CTest->GetShortPathToFile(line);
 
       // Label the source with the target labels.
       LabelSet& labelSet = this->SourceLabels[source];
@@ -2320,7 +2319,7 @@
 
   // 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());
+  std::string shortSrc = this->CTest->GetShortPathToFile(source);
   auto li = this->SourceLabels.find(shortSrc);
   if (li != this->SourceLabels.end()) {
     return !this->IntersectsFilter(li->second);
@@ -2342,14 +2341,14 @@
     std::vector<std::string> files = gl.GetFiles();
     for (std::string const& f : files) {
       if (this->ShouldIDoCoverage(f, cont->SourceDir, cont->BinaryDir)) {
-        extraMatches.insert(this->CTest->GetShortPathToFile(f.c_str()));
+        extraMatches.insert(this->CTest->GetShortPathToFile(f));
       }
     }
   }
 
   if (!extraMatches.empty()) {
     for (auto const& i : cont->TotalCoverage) {
-      std::string shortPath = this->CTest->GetShortPathToFile(i.first.c_str());
+      std::string shortPath = this->CTest->GetShortPathToFile(i.first);
       extraMatches.erase(shortPath);
     }
   }
diff --git a/Source/CTest/cmCTestGenericHandler.cxx b/Source/CTest/cmCTestGenericHandler.cxx
index cc0b4ed..a71f550 100644
--- a/Source/CTest/cmCTestGenericHandler.cxx
+++ b/Source/CTest/cmCTestGenericHandler.cxx
@@ -100,7 +100,7 @@
                                                     << std::endl);
     return false;
   }
-  this->CTest->AddSubmitFile(part, ostr.str().c_str());
+  this->CTest->AddSubmitFile(part, ostr.str());
   return true;
 }
 
diff --git a/Source/CTest/cmCTestHandlerCommand.cxx b/Source/CTest/cmCTestHandlerCommand.cxx
index a755632..03b7173 100644
--- a/Source/CTest/cmCTestHandlerCommand.cxx
+++ b/Source/CTest/cmCTestHandlerCommand.cxx
@@ -14,6 +14,7 @@
 #include "cmExecutionStatus.h"
 #include "cmMakefile.h"
 #include "cmMessageType.h"
+#include "cmProperty.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 #include "cmWorkingDirectory.h"
@@ -125,23 +126,21 @@
   // CTEST_CONFIGURATION_TYPE script variable if it is defined.
   // The current script value trumps the -C argument on the command
   // line.
-  const char* ctestConfigType =
-    this->Makefile->GetDefinition("CTEST_CONFIGURATION_TYPE");
+  cmProp ctestConfigType = this->Makefile->GetDef("CTEST_CONFIGURATION_TYPE");
   if (ctestConfigType) {
-    this->CTest->SetConfigType(ctestConfigType);
+    this->CTest->SetConfigType(*ctestConfigType);
   }
 
   if (!this->Build.empty()) {
     this->CTest->SetCTestConfiguration(
-      "BuildDirectory", cmSystemTools::CollapseFullPath(this->Build).c_str(),
+      "BuildDirectory", cmSystemTools::CollapseFullPath(this->Build),
       this->Quiet);
   } else {
     std::string const& bdir =
       this->Makefile->GetSafeDefinition("CTEST_BINARY_DIRECTORY");
     if (!bdir.empty()) {
       this->CTest->SetCTestConfiguration(
-        "BuildDirectory", cmSystemTools::CollapseFullPath(bdir).c_str(),
-        this->Quiet);
+        "BuildDirectory", cmSystemTools::CollapseFullPath(bdir), this->Quiet);
     } else {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "CTEST_BINARY_DIRECTORY not set" << std::endl;);
@@ -151,20 +150,18 @@
     cmCTestLog(this->CTest, DEBUG,
                "Set source directory to: " << this->Source << std::endl);
     this->CTest->SetCTestConfiguration(
-      "SourceDirectory", cmSystemTools::CollapseFullPath(this->Source).c_str(),
+      "SourceDirectory", cmSystemTools::CollapseFullPath(this->Source),
       this->Quiet);
   } else {
     this->CTest->SetCTestConfiguration(
       "SourceDirectory",
       cmSystemTools::CollapseFullPath(
-        this->Makefile->GetSafeDefinition("CTEST_SOURCE_DIRECTORY"))
-        .c_str(),
+        this->Makefile->GetSafeDefinition("CTEST_SOURCE_DIRECTORY")),
       this->Quiet);
   }
 
-  if (const char* changeId =
-        this->Makefile->GetDefinition("CTEST_CHANGE_ID")) {
-    this->CTest->SetCTestConfiguration("ChangeId", changeId, this->Quiet);
+  if (cmProp changeId = this->Makefile->GetDef("CTEST_CHANGE_ID")) {
+    this->CTest->SetCTestConfiguration("ChangeId", *changeId, this->Quiet);
   }
 
   cmCTestLog(this->CTest, DEBUG, "Initialize handler" << std::endl;);
diff --git a/Source/CTest/cmCTestMemCheckHandler.cxx b/Source/CTest/cmCTestMemCheckHandler.cxx
index d2772a7..822049e 100644
--- a/Source/CTest/cmCTestMemCheckHandler.cxx
+++ b/Source/CTest/cmCTestMemCheckHandler.cxx
@@ -354,7 +354,7 @@
   cmCTestMemCheckHandler::TestResultsVector::size_type cc;
   for (cmCTestTestResult const& result : this->TestResults) {
     std::string testPath = result.Path + "/" + result.Name;
-    xml.Element("Test", this->CTest->GetShortPathToFile(testPath.c_str()));
+    xml.Element("Test", this->CTest->GetShortPathToFile(testPath));
   }
   xml.EndElement(); // TestList
   cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
diff --git a/Source/CTest/cmCTestReadCustomFilesCommand.cxx b/Source/CTest/cmCTestReadCustomFilesCommand.cxx
index ed14d06..a25cca4 100644
--- a/Source/CTest/cmCTestReadCustomFilesCommand.cxx
+++ b/Source/CTest/cmCTestReadCustomFilesCommand.cxx
@@ -15,7 +15,7 @@
   }
 
   for (std::string const& arg : args) {
-    this->CTest->ReadCustomConfigurationFileTree(arg.c_str(), this->Makefile);
+    this->CTest->ReadCustomConfigurationFileTree(arg, this->Makefile);
   }
 
   return true;
diff --git a/Source/CTest/cmCTestRunTest.cxx b/Source/CTest/cmCTestRunTest.cxx
index 2c8e385..4d65c9b 100644
--- a/Source/CTest/cmCTestRunTest.cxx
+++ b/Source/CTest/cmCTestRunTest.cxx
@@ -619,11 +619,11 @@
     cmCTestMemCheckHandler* handler =
       static_cast<cmCTestMemCheckHandler*>(this->TestHandler);
     this->ActualCommand = handler->MemoryTester;
-    this->TestProperties->Args[1] = this->TestHandler->FindTheExecutable(
-      this->TestProperties->Args[1].c_str());
+    this->TestProperties->Args[1] =
+      this->TestHandler->FindTheExecutable(this->TestProperties->Args[1]);
   } else {
-    this->ActualCommand = this->TestHandler->FindTheExecutable(
-      this->TestProperties->Args[1].c_str());
+    this->ActualCommand =
+      this->TestHandler->FindTheExecutable(this->TestProperties->Args[1]);
     ++j; // skip the executable (it will be actualCommand)
   }
   std::string testCommand =
diff --git a/Source/CTest/cmCTestStartCommand.cxx b/Source/CTest/cmCTestStartCommand.cxx
index fe68406..6398d66 100644
--- a/Source/CTest/cmCTestStartCommand.cxx
+++ b/Source/CTest/cmCTestStartCommand.cxx
@@ -94,10 +94,9 @@
 
   std::string sourceDir = cmSystemTools::CollapseFullPath(src_dir);
   std::string binaryDir = cmSystemTools::CollapseFullPath(bld_dir);
-  this->CTest->SetCTestConfiguration("SourceDirectory", sourceDir.c_str(),
+  this->CTest->SetCTestConfiguration("SourceDirectory", sourceDir,
                                      this->Quiet);
-  this->CTest->SetCTestConfiguration("BuildDirectory", binaryDir.c_str(),
-                                     this->Quiet);
+  this->CTest->SetCTestConfiguration("BuildDirectory", binaryDir, this->Quiet);
 
   if (smodel) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
diff --git a/Source/CTest/cmCTestSubmitCommand.cxx b/Source/CTest/cmCTestSubmitCommand.cxx
index 279216e..026e98f 100644
--- a/Source/CTest/cmCTestSubmitCommand.cxx
+++ b/Source/CTest/cmCTestSubmitCommand.cxx
@@ -35,12 +35,12 @@
 
 cmCTestGenericHandler* cmCTestSubmitCommand::InitializeHandler()
 {
-  const char* submitURL = !this->SubmitURL.empty()
-    ? this->SubmitURL.c_str()
-    : this->Makefile->GetDefinition("CTEST_SUBMIT_URL");
+  const std::string* submitURL = !this->SubmitURL.empty()
+    ? &this->SubmitURL
+    : this->Makefile->GetDef("CTEST_SUBMIT_URL");
 
   if (submitURL) {
-    this->CTest->SetCTestConfiguration("SubmitURL", submitURL, this->Quiet);
+    this->CTest->SetCTestConfiguration("SubmitURL", *submitURL, this->Quiet);
   } else {
     this->CTest->SetCTestConfigurationFromCMakeVariable(
       this->Makefile, "DropMethod", "CTEST_DROP_METHOD", this->Quiet);
@@ -108,7 +108,7 @@
   if (this->PartsMentioned) {
     auto parts =
       cmMakeRange(this->Parts).transform([this](std::string const& arg) {
-        return this->CTest->GetPartFromName(arg.c_str());
+        return this->CTest->GetPartFromName(arg);
       });
     handler->SelectParts(std::set<cmCTest::Part>(parts.begin(), parts.end()));
   }
@@ -177,7 +177,7 @@
     !this->Files.empty() || cm::contains(keywords, "FILES");
 
   cm::erase_if(this->Parts, [this](std::string const& arg) -> bool {
-    cmCTest::Part p = this->CTest->GetPartFromName(arg.c_str());
+    cmCTest::Part p = this->CTest->GetPartFromName(arg);
     if (p == cmCTest::PartCount) {
       std::ostringstream e;
       e << "Part name \"" << arg << "\" is invalid.";
diff --git a/Source/CTest/cmCTestSubmitHandler.cxx b/Source/CTest/cmCTestSubmitHandler.cxx
index ea36df5..5b54573 100644
--- a/Source/CTest/cmCTestSubmitHandler.cxx
+++ b/Source/CTest/cmCTestSubmitHandler.cxx
@@ -797,7 +797,7 @@
         gfile = gfile.substr(glen);
         cmCTestOptionalLog(this->CTest, DEBUG,
                            "Glob file: " << gfile << std::endl, this->Quiet);
-        this->CTest->AddSubmitFile(cmCTest::PartCoverage, gfile.c_str());
+        this->CTest->AddSubmitFile(cmCTest::PartCoverage, gfile);
       }
     } else {
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Problem globbing" << std::endl);
diff --git a/Source/CTest/cmCTestTestCommand.cxx b/Source/CTest/cmCTestTestCommand.cxx
index c71b409..07ea912 100644
--- a/Source/CTest/cmCTestTestCommand.cxx
+++ b/Source/CTest/cmCTestTestCommand.cxx
@@ -13,6 +13,7 @@
 #include "cmCTestTestHandler.h"
 #include "cmDuration.h"
 #include "cmMakefile.h"
+#include "cmProperty.h"
 #include "cmStringAlgorithms.h"
 
 void cmCTestTestCommand::BindArguments()
@@ -134,10 +135,10 @@
   }
   handler->SetTestLoad(testLoad);
 
-  if (const char* labelsForSubprojects =
-        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+  if (cmProp labelsForSubprojects =
+        this->Makefile->GetDef("CTEST_LABELS_FOR_SUBPROJECTS")) {
     this->CTest->SetCTestConfiguration("LabelsForSubprojects",
-                                       labelsForSubprojects, this->Quiet);
+                                       *labelsForSubprojects, this->Quiet);
   }
 
   handler->SetQuiet(this->Quiet);
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index d0dbaae..70e84ee 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -1374,7 +1374,7 @@
   xml.StartElement("TestList");
   for (cmCTestTestResult const& result : this->TestResults) {
     std::string testPath = result.Path + "/" + result.Name;
-    xml.Element("Test", this->CTest->GetShortPathToFile(testPath.c_str()));
+    xml.Element("Test", this->CTest->GetShortPathToFile(testPath));
   }
   xml.EndElement(); // TestList
   for (cmCTestTestResult& result : this->TestResults) {
@@ -1483,8 +1483,8 @@
   }
   std::string testPath = result.Path + "/" + result.Name;
   xml.Element("Name", result.Name);
-  xml.Element("Path", this->CTest->GetShortPathToFile(result.Path.c_str()));
-  xml.Element("FullName", this->CTest->GetShortPathToFile(testPath.c_str()));
+  xml.Element("Path", this->CTest->GetShortPathToFile(result.Path));
+  xml.Element("FullName", this->CTest->GetShortPathToFile(testPath));
   xml.Element("FullCommandLine", result.FullCommandLine);
 }
 
@@ -1546,12 +1546,12 @@
 }
 
 // Find the appropriate executable to run for a test
-std::string cmCTestTestHandler::FindTheExecutable(const char* exe)
+std::string cmCTestTestHandler::FindTheExecutable(const std::string& exe)
 {
   std::string resConfig;
   std::vector<std::string> extraPaths;
   std::vector<std::string> failedPaths;
-  if (strcmp(exe, "NOT_AVAILABLE") == 0) {
+  if (exe == "NOT_AVAILABLE") {
     return exe;
   }
   return cmCTestTestHandler::FindExecutable(this->CTest, exe, resConfig,
@@ -1607,7 +1607,7 @@
 
 // Find the appropriate executable to run for a test
 std::string cmCTestTestHandler::FindExecutable(
-  cmCTest* ctest, const char* testCommand, std::string& resultingConfig,
+  cmCTest* ctest, const std::string& testCommand, std::string& resultingConfig,
   std::vector<std::string>& extraPaths, std::vector<std::string>& failed)
 {
   // now run the compiled test if we can find it
diff --git a/Source/CTest/cmCTestTestHandler.h b/Source/CTest/cmCTestTestHandler.h
index 0d88c30..b26f8a6 100644
--- a/Source/CTest/cmCTestTestHandler.h
+++ b/Source/CTest/cmCTestTestHandler.h
@@ -198,7 +198,8 @@
                                 std::string filepath, std::string& filename);
 
   // full signature static method to find an executable
-  static std::string FindExecutable(cmCTest* ctest, const char* testCommand,
+  static std::string FindExecutable(cmCTest* ctest,
+                                    const std::string& testCommand,
                                     std::string& resultingConfig,
                                     std::vector<std::string>& extraPaths,
                                     std::vector<std::string>& failed);
@@ -309,7 +310,7 @@
   /**
    * Find the executable for a test
    */
-  std::string FindTheExecutable(const char* exe);
+  std::string FindTheExecutable(const std::string& exe);
 
   std::string GetTestStatus(cmCTestTestResult const&);
   void ExpandTestsToRunInformation(size_t numPossibleTests);
diff --git a/Source/CTest/cmCTestUpdateCommand.cxx b/Source/CTest/cmCTestUpdateCommand.cxx
index 673eb9a..95cae13 100644
--- a/Source/CTest/cmCTestUpdateCommand.cxx
+++ b/Source/CTest/cmCTestUpdateCommand.cxx
@@ -11,14 +11,13 @@
 {
   if (!this->Source.empty()) {
     this->CTest->SetCTestConfiguration(
-      "SourceDirectory", cmSystemTools::CollapseFullPath(this->Source).c_str(),
+      "SourceDirectory", cmSystemTools::CollapseFullPath(this->Source),
       this->Quiet);
   } else {
     this->CTest->SetCTestConfiguration(
       "SourceDirectory",
       cmSystemTools::CollapseFullPath(
-        this->Makefile->GetDefinition("CTEST_SOURCE_DIRECTORY"))
-        .c_str(),
+        this->Makefile->GetDefinition("CTEST_SOURCE_DIRECTORY")),
       this->Quiet);
   }
   std::string source_dir =
diff --git a/Source/CTest/cmProcess.cxx b/Source/CTest/cmProcess.cxx
index a549117..9ee1c17 100644
--- a/Source/CTest/cmProcess.cxx
+++ b/Source/CTest/cmProcess.cxx
@@ -545,17 +545,17 @@
 #  endif
 #  ifdef SIGABRT
     case SIGABRT:
-      exception_str = "Child aborted";
+      exception_str = "Subprocess aborted";
       break;
 #  endif
 #  ifdef SIGKILL
     case SIGKILL:
-      exception_str = "Child killed";
+      exception_str = "Subprocess killed";
       break;
 #  endif
 #  ifdef SIGTERM
     case SIGTERM:
-      exception_str = "Child terminated";
+      exception_str = "Subprocess terminated";
       break;
 #  endif
 #  ifdef SIGHUP
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index 4254e2e..a5fde89 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -394,7 +394,7 @@
   return this->Impl->CompressTestOutput;
 }
 
-cmCTest::Part cmCTest::GetPartFromName(const char* name)
+cmCTest::Part cmCTest::GetPartFromName(const std::string& name)
 {
   // Look up by lower-case to make names case-insensitive.
   std::string lower_name = cmSystemTools::LowerCase(name);
@@ -458,8 +458,7 @@
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
   cmMakefile mf(&gg, cm.GetCurrentSnapshot());
-  if (!this->ReadCustomConfigurationFileTree(this->Impl->BinaryDir.c_str(),
-                                             &mf)) {
+  if (!this->ReadCustomConfigurationFileTree(this->Impl->BinaryDir, &mf)) {
     cmCTestOptionalLog(
       this, DEBUG, "Cannot find custom configuration file tree" << std::endl,
       quiet);
@@ -523,7 +522,7 @@
         std::string model;
         if (cmSystemTools::GetLineFromStream(tfin, model) &&
             !this->Impl->Parts[PartStart] && !command) {
-          this->Impl->TestModel = GetTestModelFromString(model.c_str());
+          this->Impl->TestModel = GetTestModelFromString(model);
         }
         tfin.close();
       }
@@ -579,7 +578,7 @@
         cmSystemTools::GetLineFromStream(tfin, tag);
         cmSystemTools::GetLineFromStream(tfin, group);
         if (cmSystemTools::GetLineFromStream(tfin, modelStr)) {
-          model = GetTestModelFromString(modelStr.c_str());
+          model = GetTestModelFromString(modelStr);
         }
         tfin.close();
       }
@@ -793,7 +792,7 @@
   return this->Impl->TestModel;
 }
 
-bool cmCTest::SetTest(const char* ttype, bool report)
+bool cmCTest::SetTest(const std::string& ttype, bool report)
 {
   if (cmSystemTools::LowerCase(ttype) == "all") {
     for (Part p = PartStart; p != PartCount; p = Part(p + 1)) {
@@ -856,7 +855,7 @@
   return true;
 }
 
-bool cmCTest::AddIfExists(Part part, const char* file)
+bool cmCTest::AddIfExists(Part part, const std::string& file)
 {
   if (this->CTestFileExists(file)) {
     this->AddSubmitFile(part, file);
@@ -1008,7 +1007,7 @@
   if (this->Impl->Parts[PartNotes]) {
     this->UpdateCTestConfiguration();
     if (!this->Impl->NotesFiles.empty()) {
-      this->GenerateNotesFile(this->Impl->NotesFiles.c_str());
+      this->GenerateNotesFile(this->Impl->NotesFiles);
     }
   }
   if (this->Impl->Parts[PartSubmit]) {
@@ -1037,9 +1036,9 @@
   return "Experimental";
 }
 
-int cmCTest::GetTestModelFromString(const char* str)
+int cmCTest::GetTestModelFromString(const std::string& str)
 {
-  if (!str) {
+  if (str.empty()) {
     return cmCTest::EXPERIMENTAL;
   }
   std::string rstr = cmSystemTools::LowerCase(str);
@@ -1565,9 +1564,9 @@
   return 0;
 }
 
-int cmCTest::GenerateNotesFile(const char* cfiles)
+int cmCTest::GenerateNotesFile(const std::string& cfiles)
 {
-  if (!cfiles) {
+  if (cfiles.empty()) {
     return 1;
   }
 
@@ -1650,14 +1649,14 @@
                                             << std::endl;);
       return false;
     }
-    this->AddSubmitFile(PartExtraFiles, file.c_str());
+    this->AddSubmitFile(PartExtraFiles, file);
   }
   return true;
 }
 
-bool cmCTest::SubmitExtraFiles(const char* cfiles)
+bool cmCTest::SubmitExtraFiles(const std::string& cfiles)
 {
-  if (!cfiles) {
+  if (cfiles.empty()) {
     return true;
   }
 
@@ -1941,7 +1940,7 @@
   else if (this->CheckArgument(arg, "-C"_s, "--build-config") &&
            i < args.size() - 1) {
     i++;
-    this->SetConfigType(args[i].c_str());
+    this->SetConfigType(args[i]);
   }
 
   else if (this->CheckArgument(arg, "--debug"_s)) {
@@ -2016,7 +2015,7 @@
   else if (this->CheckArgument(arg, "-O"_s, "--output-log") &&
            i < args.size() - 1) {
     i++;
-    this->SetOutputLogFileName(args[i].c_str());
+    this->SetOutputLogFileName(args[i]);
   }
 
   else if (this->CheckArgument(arg, "--tomorrow-tag"_s)) {
@@ -2048,7 +2047,7 @@
     this->Impl->ProduceXML = true;
     this->SetTest("Notes");
     i++;
-    this->SetNotesFiles(args[i].c_str());
+    this->SetNotesFiles(args[i]);
     return true;
   }
 
@@ -2305,7 +2304,7 @@
       this->Impl->ProduceXML = true;
       this->SetTest("Submit");
       i++;
-      if (!this->SubmitExtraFiles(args[i].c_str())) {
+      if (!this->SubmitExtraFiles(args[i])) {
         return 0;
       }
     }
@@ -2376,7 +2375,7 @@
       (i < args.size() - 1)) {
     this->Impl->ProduceXML = true;
     i++;
-    if (!this->SetTest(args[i].c_str(), false)) {
+    if (!this->SetTest(args[i], false)) {
       success = false;
       cmCTestLog(this, ERROR_MESSAGE,
                  "CTest -T called with incorrect option: " << args[i]
@@ -2491,11 +2490,8 @@
   return retv;
 }
 
-void cmCTest::SetNotesFiles(const char* notes)
+void cmCTest::SetNotesFiles(const std::string& notes)
 {
-  if (!notes) {
-    return;
-  }
   this->Impl->NotesFiles = notes;
 }
 
@@ -2561,7 +2557,8 @@
   this->Impl->ScheduleType = type;
 }
 
-int cmCTest::ReadCustomConfigurationFileTree(const char* dir, cmMakefile* mf)
+int cmCTest::ReadCustomConfigurationFileTree(const std::string& dir,
+                                             cmMakefile* mf)
 {
   bool found = false;
   cmCTestLog(this, DEBUG,
@@ -2648,7 +2645,7 @@
   val = atoi(dval);
 }
 
-std::string cmCTest::GetShortPathToFile(const char* cfname)
+std::string cmCTest::GetShortPathToFile(const std::string& cfname)
 {
   const std::string& sourceDir = cmSystemTools::CollapseFullPath(
     this->GetCTestConfiguration("SourceDirectory"));
@@ -2712,18 +2709,17 @@
   this->Impl->CTestConfiguration.clear();
 }
 
-void cmCTest::SetCTestConfiguration(const char* name, const char* value,
+void cmCTest::SetCTestConfiguration(const char* name, const std::string& value,
                                     bool suppress)
 {
   cmCTestOptionalLog(this, HANDLER_VERBOSE_OUTPUT,
-                     "SetCTestConfiguration:"
-                       << name << ":" << (value ? value : "(null)") << "\n",
+                     "SetCTestConfiguration:" << name << ":" << value << "\n",
                      suppress);
 
   if (!name) {
     return;
   }
-  if (!value) {
+  if (value.empty()) {
     this->Impl->CTestConfiguration.erase(name);
     return;
   }
@@ -2928,7 +2924,7 @@
   return this->Impl->BuildID;
 }
 
-void cmCTest::AddSubmitFile(Part part, const char* name)
+void cmCTest::AddSubmitFile(Part part, const std::string& name)
 {
   this->Impl->Parts[part].SubmitFiles.emplace_back(name);
 }
@@ -2964,9 +2960,9 @@
   this->Impl->CTestConfigurationOverwrites[key] = value;
 }
 
-void cmCTest::SetConfigType(const char* ct)
+void cmCTest::SetConfigType(const std::string& ct)
 {
-  this->Impl->ConfigType = ct ? ct : "";
+  this->Impl->ConfigType = ct;
   cmSystemTools::ReplaceString(this->Impl->ConfigType, ".\\", "");
   std::string confTypeEnv = "CMAKE_CONFIG_TYPE=" + this->Impl->ConfigType;
   cmSystemTools::PutEnv(confTypeEnv);
@@ -2976,8 +2972,7 @@
   cmMakefile* mf, const char* dconfig, const std::string& cmake_var,
   bool suppress)
 {
-  const char* ctvar;
-  ctvar = mf->GetDefinition(cmake_var);
+  cmProp ctvar = mf->GetDef(cmake_var);
   if (!ctvar) {
     return false;
   }
@@ -2985,7 +2980,7 @@
                      "SetCTestConfigurationFromCMakeVariable:"
                        << dconfig << ":" << cmake_var << std::endl,
                      suppress);
-  this->SetCTestConfiguration(dconfig, ctvar, suppress);
+  this->SetCTestConfiguration(dconfig, *ctvar, suppress);
   return true;
 }
 
@@ -3086,9 +3081,9 @@
   return result;
 }
 
-void cmCTest::SetOutputLogFileName(const char* name)
+void cmCTest::SetOutputLogFileName(const std::string& name)
 {
-  if (name) {
+  if (!name.empty()) {
     this->Impl->OutputLogFile = cm::make_unique<cmGeneratedFileStream>(name);
   } else {
     this->Impl->OutputLogFile.reset();
diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index a39b8fe..1e0fb8c 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -64,7 +64,7 @@
 
   /** Get a testing part id from its string name.  Returns PartCount
       if the string does not name a valid part.  */
-  Part GetPartFromName(const char* name);
+  Part GetPartFromName(const std::string& name);
 
   /** Process Command line arguments */
   int Run(std::vector<std::string>&, std::string* output = nullptr);
@@ -127,12 +127,12 @@
    * Check if CTest file exists
    */
   bool CTestFileExists(const std::string& filename);
-  bool AddIfExists(Part part, const char* file);
+  bool AddIfExists(Part part, const std::string& file);
 
   /**
    * Set the cmake test
    */
-  bool SetTest(const char*, bool report = true);
+  bool SetTest(const std::string&, bool report = true);
 
   /**
    * Set the cmake test mode (experimental, nightly, continuous).
@@ -141,11 +141,11 @@
   int GetTestModel() const;
 
   std::string GetTestModelString();
-  static int GetTestModelFromString(const char* str);
+  static int GetTestModelFromString(const std::string& str);
   static std::string CleanString(const std::string& str,
                                  std::string::size_type spos = 0);
   std::string GetCTestConfiguration(const std::string& name);
-  void SetCTestConfiguration(const char* name, const char* value,
+  void SetCTestConfiguration(const char* name, const std::string& value,
                              bool suppress = false);
   void EmptyCTestConfiguration();
 
@@ -161,7 +161,7 @@
   cmCTest& operator=(const cmCTest&) = delete;
 
   /** Set the notes files to be created. */
-  void SetNotesFiles(const char* notes);
+  void SetNotesFiles(const std::string& notes);
 
   void PopulateCustomVector(cmMakefile* mf, const std::string& definition,
                             std::vector<std::string>& vec);
@@ -272,7 +272,7 @@
    * This means if the file is in binary or
    * source directory, it will become /.../relative/path/to/file
    */
-  std::string GetShortPathToFile(const char* fname);
+  std::string GetShortPathToFile(const std::string& fname);
 
   enum
   {
@@ -354,14 +354,14 @@
   int GenerateDoneFile();
 
   /** Submit extra files to the server */
-  bool SubmitExtraFiles(const char* files);
+  bool SubmitExtraFiles(const std::string& files);
   bool SubmitExtraFiles(std::vector<std::string> const& files);
 
   /** Set the output log file name */
-  void SetOutputLogFileName(const char* name);
+  void SetOutputLogFileName(const std::string& name);
 
   /** Set the visual studio or Xcode config type */
-  void SetConfigType(const char* ct);
+  void SetConfigType(const std::string& ct);
 
   /** Various log types */
   enum
@@ -399,14 +399,14 @@
   std::string GetBuildID() const;
 
   /** Add file to be submitted */
-  void AddSubmitFile(Part part, const char* name);
+  void AddSubmitFile(Part part, const std::string& name);
   std::vector<std::string> const& GetSubmitFiles(Part part) const;
   void ClearSubmitFiles(Part part);
 
   /**
    * Read the custom configuration files and apply them to the current ctest
    */
-  int ReadCustomConfigurationFileTree(const char* dir, cmMakefile* mf);
+  int ReadCustomConfigurationFileTree(const std::string& dir, cmMakefile* mf);
 
   std::vector<std::string>& GetInitialCommandLineArguments();
 
@@ -462,7 +462,7 @@
   void SetRunCurrentScript(bool value);
 
 private:
-  int GenerateNotesFile(const char* files);
+  int GenerateNotesFile(const std::string& files);
 
   void BlockTestErrorDiagnostics();
 
diff --git a/Source/cmComputeTargetDepends.cxx b/Source/cmComputeTargetDepends.cxx
index 6b4d110..06ad64d 100644
--- a/Source/cmComputeTargetDepends.cxx
+++ b/Source/cmComputeTargetDepends.cxx
@@ -184,7 +184,7 @@
 {
   // Get the depender.
   cmGeneratorTarget const* depender = this->Targets[depender_index];
-  if (depender->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!depender->IsInBuildSystem()) {
     return;
   }
 
@@ -198,16 +198,18 @@
     std::vector<std::string> const& configs =
       depender->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
     for (std::string const& it : configs) {
-      cmLinkImplementation const* impl = depender->GetLinkImplementation(it);
-
       // A target should not depend on itself.
       emitted.insert(cmLinkItem(depender, false, cmListFileBacktrace()));
       emitted.insert(cmLinkItem(depender, true, cmListFileBacktrace()));
-      for (cmLinkImplItem const& lib : impl->Libraries) {
-        // Don't emit the same library twice for this target.
-        if (emitted.insert(lib).second) {
-          this->AddTargetDepend(depender_index, lib, true, false);
-          this->AddInterfaceDepends(depender_index, lib, it, emitted);
+
+      if (cmLinkImplementation const* impl =
+            depender->GetLinkImplementation(it)) {
+        for (cmLinkImplItem const& lib : impl->Libraries) {
+          // Don't emit the same library twice for this target.
+          if (emitted.insert(lib).second) {
+            this->AddTargetDepend(depender_index, lib, true, false);
+            this->AddInterfaceDepends(depender_index, lib, it, emitted);
+          }
         }
       }
 
@@ -356,10 +358,9 @@
   int depender_index, cmGeneratorTarget const* dependee,
   cmListFileBacktrace const& dependee_backtrace, bool linking, bool cross)
 {
-  if (dependee->IsImported() ||
-      dependee->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
-    // Skip IMPORTED and INTERFACE targets but follow their utility
-    // dependencies.
+  if (!dependee->IsInBuildSystem()) {
+    // Skip targets that are not in the buildsystem but follow their
+    // utility dependencies.
     std::set<cmLinkItem> const& utils = dependee->GetUtilityItems();
     for (cmLinkItem const& i : utils) {
       if (cmGeneratorTarget const* transitive_dependee = i.Target) {
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index b10ce89..64d4ec4 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -1089,6 +1089,27 @@
   return this->Target->GetPostBuildCommands();
 }
 
+bool cmGeneratorTarget::IsInBuildSystem() const
+{
+  if (this->IsImported()) {
+    return false;
+  }
+  switch (this->Target->GetType()) {
+    case cmStateEnums::EXECUTABLE:
+    case cmStateEnums::STATIC_LIBRARY:
+    case cmStateEnums::SHARED_LIBRARY:
+    case cmStateEnums::MODULE_LIBRARY:
+    case cmStateEnums::OBJECT_LIBRARY:
+    case cmStateEnums::UTILITY:
+    case cmStateEnums::GLOBAL_TARGET:
+      return true;
+    case cmStateEnums::INTERFACE_LIBRARY:
+    case cmStateEnums::UNKNOWN_LIBRARY:
+      break;
+  }
+  return false;
+}
+
 bool cmGeneratorTarget::IsImported() const
 {
   return this->Target->IsImported();
@@ -1099,6 +1120,11 @@
   return this->Target->IsImportedGloballyVisible();
 }
 
+bool cmGeneratorTarget::CanCompileSources() const
+{
+  return this->Target->CanCompileSources();
+}
+
 const std::string& cmGeneratorTarget::GetLocationForBuild() const
 {
   static std::string location;
@@ -1365,7 +1391,7 @@
 
     for (const cmLinkImplItem& library : libraries->Libraries) {
       if (const cmGeneratorTarget* dependency = library.Target) {
-        if (dependency->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+        if (!dependency->IsInBuildSystem()) {
           continue;
         }
         if (cm::contains(dependency->GetAllConfigCompileLanguages(),
@@ -2441,6 +2467,12 @@
 cmGeneratorTarget::LinkClosure const* cmGeneratorTarget::GetLinkClosure(
   const std::string& config) const
 {
+  // There is no link implementation for targets that cannot compile sources.
+  if (!this->CanCompileSources()) {
+    static LinkClosure const empty = { {}, {} };
+    return &empty;
+  }
+
   std::string key(cmSystemTools::UpperCase(config));
   auto i = this->LinkClosureMap.find(key);
   if (i == this->LinkClosureMap.end()) {
@@ -2757,6 +2789,12 @@
 cmGeneratorTarget::GetLinkImplementationClosure(
   const std::string& config) const
 {
+  // There is no link implementation for targets that cannot compile sources.
+  if (!this->CanCompileSources()) {
+    static std::vector<const cmGeneratorTarget*> const empty;
+    return empty;
+  }
+
   LinkImplClosure& tgts = this->LinkImplClosureMap[config];
   if (!tgts.Done) {
     tgts.Done = true;
@@ -2764,6 +2802,7 @@
 
     cmLinkImplementationLibraries const* impl =
       this->GetLinkImplementationLibraries(config);
+    assert(impl);
 
     for (cmLinkImplItem const& lib : impl->Libraries) {
       processILibs(config, this, lib,
@@ -2813,29 +2852,26 @@
   this->CurrentEntry = nullptr;
 
   // Queue all the source files already specified for the target.
-  if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
-    std::set<cmSourceFile*> emitted;
-    std::vector<std::string> const& configs =
-      this->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
-    for (std::string const& c : configs) {
-      std::vector<cmSourceFile*> sources;
-      this->GeneratorTarget->GetSourceFiles(sources, c);
-      for (cmSourceFile* sf : sources) {
-        const std::set<cmGeneratorTarget const*> tgts =
-          this->GlobalGenerator->GetFilenameTargetDepends(sf);
-        if (cm::contains(tgts, this->GeneratorTarget)) {
-          std::ostringstream e;
-          e << "Evaluation output file\n  \"" << sf->ResolveFullPath()
-            << "\"\ndepends on the sources of a target it is used in.  This "
-               "is a dependency loop and is not allowed.";
-          this->GeneratorTarget->LocalGenerator->IssueMessage(
-            MessageType::FATAL_ERROR, e.str());
-          return;
-        }
-        if (emitted.insert(sf).second &&
-            this->SourcesQueued.insert(sf).second) {
-          this->SourceQueue.push(sf);
-        }
+  std::set<cmSourceFile*> emitted;
+  std::vector<std::string> const& configs =
+    this->Makefile->GetGeneratorConfigs(cmMakefile::IncludeEmptyConfig);
+  for (std::string const& c : configs) {
+    std::vector<cmSourceFile*> sources;
+    this->GeneratorTarget->GetSourceFiles(sources, c);
+    for (cmSourceFile* sf : sources) {
+      const std::set<cmGeneratorTarget const*> tgts =
+        this->GlobalGenerator->GetFilenameTargetDepends(sf);
+      if (cm::contains(tgts, this->GeneratorTarget)) {
+        std::ostringstream e;
+        e << "Evaluation output file\n  \"" << sf->ResolveFullPath()
+          << "\"\ndepends on the sources of a target it is used in.  This "
+             "is a dependency loop and is not allowed.";
+        this->GeneratorTarget->LocalGenerator->IssueMessage(
+          MessageType::FATAL_ERROR, e.str());
+        return;
+      }
+      if (emitted.insert(sf).second && this->SourcesQueued.insert(sf).second) {
+        this->SourceQueue.push(sf);
       }
     }
   }
@@ -3413,23 +3449,24 @@
                       &dagChecker, entries);
 
   if (this->Makefile->IsOn("APPLE")) {
-    cmLinkImplementationLibraries const* impl =
-      this->GetLinkImplementationLibraries(config);
-    for (cmLinkImplItem const& lib : impl->Libraries) {
-      std::string libDir = cmSystemTools::CollapseFullPath(
-        lib.AsStr(), this->Makefile->GetHomeOutputDirectory());
+    if (cmLinkImplementationLibraries const* impl =
+          this->GetLinkImplementationLibraries(config)) {
+      for (cmLinkImplItem const& lib : impl->Libraries) {
+        std::string libDir = cmSystemTools::CollapseFullPath(
+          lib.AsStr(), this->Makefile->GetHomeOutputDirectory());
 
-      static cmsys::RegularExpression frameworkCheck(
-        "(.*\\.framework)(/Versions/[^/]+)?/[^/]+$");
-      if (!frameworkCheck.find(libDir)) {
-        continue;
+        static cmsys::RegularExpression frameworkCheck(
+          "(.*\\.framework)(/Versions/[^/]+)?/[^/]+$");
+        if (!frameworkCheck.find(libDir)) {
+          continue;
+        }
+
+        libDir = frameworkCheck.match(1);
+
+        EvaluatedTargetPropertyEntry ee(lib, cmListFileBacktrace());
+        ee.Values.emplace_back(std::move(libDir));
+        entries.Entries.emplace_back(std::move(ee));
       }
-
-      libDir = frameworkCheck.match(1);
-
-      EvaluatedTargetPropertyEntry ee(lib, cmListFileBacktrace());
-      ee.Values.emplace_back(std::move(libDir));
-      entries.Entries.emplace_back(std::move(ee));
     }
   }
 
@@ -6524,15 +6561,20 @@
                           iface.HadHeadSensitiveCondition,
                           iface.HadContextSensitiveCondition,
                           iface.HadLinkLanguageSensitiveCondition);
-  } else if (!cmp0022NEW)
+    return;
+  }
+
   // If CMP0022 is NEW then the plain tll signature sets the
   // INTERFACE_LINK_LIBRARIES, so if we get here then the project
   // cleared the property explicitly and we should not fall back
   // to the link implementation.
-  {
-    // The link implementation is the default link interface.
-    cmLinkImplementationLibraries const* impl =
-      this->GetLinkImplementationLibrariesInternal(config, headTarget);
+  if (cmp0022NEW) {
+    return;
+  }
+
+  // The link implementation is the default link interface.
+  if (cmLinkImplementationLibraries const* impl =
+        this->GetLinkImplementationLibrariesInternal(config, headTarget)) {
     iface.Libraries.insert(iface.Libraries.end(), impl->Libraries.begin(),
                            impl->Libraries.end());
     if (this->GetPolicyStatusCMP0022() == cmPolicies::WARN &&
@@ -6826,8 +6868,8 @@
 const cmLinkImplementation* cmGeneratorTarget::GetLinkImplementation(
   const std::string& config, bool secondPass) const
 {
-  // There is no link implementation for imported targets.
-  if (this->IsImported()) {
+  // There is no link implementation for targets that cannot compile sources.
+  if (!this->CanCompileSources()) {
     return nullptr;
   }
 
@@ -6990,6 +7032,11 @@
 void cmGeneratorTarget::GetLanguages(std::set<std::string>& languages,
                                      const std::string& config) const
 {
+  // Targets that do not compile anything have no languages.
+  if (!this->CanCompileSources()) {
+    return;
+  }
+
   std::vector<cmSourceFile*> sourceFiles;
   this->GetSourceFiles(sourceFiles, config);
   for (cmSourceFile* src : sourceFiles) {
@@ -7085,8 +7132,8 @@
 cmGeneratorTarget::GetLinkImplementationLibrariesInternal(
   const std::string& config, cmGeneratorTarget const* head) const
 {
-  // There is no link implementation for imported targets.
-  if (this->IsImported()) {
+  // There is no link implementation for targets that cannot compile sources.
+  if (!this->CanCompileSources()) {
     return nullptr;
   }
 
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 08aa015..4a03f65 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -45,8 +45,10 @@
 
   cmGlobalGenerator* GetGlobalGenerator() const;
 
+  bool IsInBuildSystem() const;
   bool IsImported() const;
   bool IsImportedGloballyVisible() const;
+  bool CanCompileSources() const;
   const std::string& GetLocation(const std::string& config) const;
 
   std::vector<cmCustomCommand> const& GetPreBuildCommands() const;
diff --git a/Source/cmGlobalCommonGenerator.cxx b/Source/cmGlobalCommonGenerator.cxx
index 5eff3b8..9e5bbca 100644
--- a/Source/cmGlobalCommonGenerator.cxx
+++ b/Source/cmGlobalCommonGenerator.cxx
@@ -42,12 +42,7 @@
     // for all targets in the directory.
     for (const auto& gt : lg->GetGeneratorTargets()) {
       cmStateEnums::TargetType const type = gt->GetType();
-      if (type != cmStateEnums::EXECUTABLE &&
-          type != cmStateEnums::STATIC_LIBRARY &&
-          type != cmStateEnums::SHARED_LIBRARY &&
-          type != cmStateEnums::MODULE_LIBRARY &&
-          type != cmStateEnums::OBJECT_LIBRARY &&
-          type != cmStateEnums::UTILITY) {
+      if (type == cmStateEnums::GLOBAL_TARGET || !gt->IsInBuildSystem()) {
         continue;
       }
       DirectoryTarget::Target t;
diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index 5c07e31..eff6665 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -302,9 +302,7 @@
   bool failed = false;
   for (const auto& localGen : this->LocalGenerators) {
     for (const auto& target : localGen->GetGeneratorTargets()) {
-      if (target->GetType() == cmStateEnums::TargetType::GLOBAL_TARGET ||
-          target->GetType() == cmStateEnums::TargetType::INTERFACE_LIBRARY ||
-          target->GetType() == cmStateEnums::TargetType::UTILITY ||
+      if (!target->CanCompileSources() ||
           cmIsOn(target->GetProperty("ghs_integrity_app"))) {
         continue;
       }
@@ -358,9 +356,7 @@
   bool failed = false;
   for (const auto& generator : this->LocalGenerators) {
     for (const auto& target : generator->GetGeneratorTargets()) {
-      if (target->GetType() == cmStateEnums::TargetType::GLOBAL_TARGET ||
-          target->GetType() == cmStateEnums::TargetType::INTERFACE_LIBRARY ||
-          target->GetType() == cmStateEnums::TargetType::UTILITY ||
+      if (!target->CanCompileSources() ||
           cmIsOn(target->GetProperty("ghs_integrity_app"))) {
         continue;
       }
@@ -1595,9 +1591,7 @@
   for (const auto& lg : this->LocalGenerators) {
     lg->CreateEvaluationFileOutputs();
     for (const auto& gt : lg->GetGeneratorTargets()) {
-      if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY ||
-          gt->GetType() == cmStateEnums::UTILITY ||
-          gt->GetType() == cmStateEnums::GLOBAL_TARGET) {
+      if (!gt->CanCompileSources()) {
         continue;
       }
       lg->AddUnityBuild(gt.get());
@@ -1609,9 +1603,7 @@
   }
   for (const auto& lg : this->LocalGenerators) {
     for (const auto& gt : lg->GetGeneratorTargets()) {
-      if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY ||
-          gt->GetType() == cmStateEnums::UTILITY ||
-          gt->GetType() == cmStateEnums::GLOBAL_TARGET) {
+      if (!gt->CanCompileSources()) {
         continue;
       }
       // Handle targets that re-use a PCH from an above-handled target.
@@ -2165,7 +2157,7 @@
 bool cmGlobalGenerator::IsExcluded(cmLocalGenerator* root,
                                    const cmGeneratorTarget* target) const
 {
-  if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!target->IsInBuildSystem()) {
     return true;
   }
   cmMakefile* mf = root->GetMakefile();
@@ -2189,7 +2181,7 @@
     // configurations.
     if (trueCount && falseCount) {
       std::ostringstream e;
-      e << "The EXCLUDED_FROM_ALL property of target \"" << target->GetName()
+      e << "The EXCLUDE_FROM_ALL property of target \"" << target->GetName()
         << "\" varies by configuration. This is not supported by the \""
         << root->GetGlobalGenerator()->GetName() << "\" generator.";
       mf->IssueMessage(MessageType::FATAL_ERROR, e.str());
@@ -3054,7 +3046,7 @@
 
   for (const auto& lg : this->LocalGenerators) {
     for (const auto& tgt : lg->GetGeneratorTargets()) {
-      if (tgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+      if (!tgt->IsInBuildSystem()) {
         continue;
       }
       this->WriteSummary(tgt.get());
diff --git a/Source/cmGlobalGhsMultiGenerator.cxx b/Source/cmGlobalGhsMultiGenerator.cxx
index 1664dd0..9969465 100644
--- a/Source/cmGlobalGhsMultiGenerator.cxx
+++ b/Source/cmGlobalGhsMultiGenerator.cxx
@@ -467,7 +467,7 @@
     this->ProjectTargets.push_back(t);
   }
   for (cmGeneratorTarget const* t : sortedProjectTargets) {
-    if (t->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!t->IsInBuildSystem()) {
       continue;
     }
     if (!IsExcluded(t->GetLocalGenerator(), t)) {
diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 786cde7..2ef202d 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -1105,8 +1105,9 @@
       break;
     }
 
-    default:
-      return;
+    case cmStateEnums::INTERFACE_LIBRARY:
+    case cmStateEnums::UNKNOWN_LIBRARY:
+      break;
   }
 }
 
@@ -1128,7 +1129,7 @@
     cmNinjaDeps outs;
     for (cmTargetDepend const& targetDep :
          this->GetTargetDirectDepends(target)) {
-      if (targetDep->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+      if (!targetDep->IsInBuildSystem()) {
         continue;
       }
       if (targetDep.IsCross()) {
@@ -1170,7 +1171,7 @@
     cmNinjaOuts this_outs; // this will be the new cache entry
 
     for (auto const& dep_target : this->GetTargetDirectDepends(target)) {
-      if (dep_target->GetType() == cmStateEnums::INTERFACE_LIBRARY ||
+      if (!dep_target->IsInBuildSystem() ||
           (this->EnableCrossConfigBuild() && !dep_target.IsCross())) {
         continue;
       }
@@ -1189,7 +1190,7 @@
   // finally generate the outputs of the target itself, if applicable
   cmNinjaDeps outs;
   if (!omit_self) {
-    this->AppendTargetOutputs(target, outs, config);
+    this->AppendTargetOutputs(target, outs, config, DependOnTargetArtifact);
   }
   outputs.insert(outs.begin(), outs.end());
 }
@@ -1201,7 +1202,7 @@
   std::string outputPath = this->NinjaOutputPath(alias);
   std::string buildAlias = this->BuildAlias(outputPath, config);
   cmNinjaDeps outputs;
-  this->AppendTargetOutputs(target, outputs, config);
+  this->AppendTargetOutputs(target, outputs, config, DependOnTargetArtifact);
   // Mark the target's outputs as ambiguous to ensure that no other target
   // uses the output as an alias.
   for (std::string const& output : outputs) {
@@ -1267,11 +1268,12 @@
     if (ta.second.Config == "all") {
       for (auto const& config : this->CrossConfigs) {
         this->AppendTargetOutputs(ta.second.GeneratorTarget,
-                                  build.ExplicitDeps, config);
+                                  build.ExplicitDeps, config,
+                                  DependOnTargetArtifact);
       }
     } else {
       this->AppendTargetOutputs(ta.second.GeneratorTarget, build.ExplicitDeps,
-                                ta.second.Config);
+                                ta.second.Config, DependOnTargetArtifact);
     }
     this->WriteBuild(this->EnableCrossConfigBuild() &&
                          (ta.second.Config == "all" ||
@@ -1299,7 +1301,8 @@
         build.Outputs.front() = ta.first;
         build.ExplicitDeps.clear();
         this->AppendTargetOutputs(ta.second.GeneratorTarget,
-                                  build.ExplicitDeps, config);
+                                  build.ExplicitDeps, config,
+                                  DependOnTargetArtifact);
         this->WriteBuild(*this->GetConfigFileStream(config), build);
       }
     }
@@ -1321,7 +1324,8 @@
         build.ExplicitDeps.clear();
         for (auto const& config : this->DefaultConfigs) {
           this->AppendTargetOutputs(ta.second.GeneratorTarget,
-                                    build.ExplicitDeps, config);
+                                    build.ExplicitDeps, config,
+                                    DependOnTargetArtifact);
         }
         this->WriteBuild(*this->GetDefaultFileStream(), build);
       }
@@ -1358,7 +1362,8 @@
       configDeps.emplace_back(build.Outputs.front());
       for (DirectoryTarget::Target const& t : dt.Targets) {
         if (!IsExcludedFromAllInConfig(t, config)) {
-          this->AppendTargetOutputs(t.GT, build.ExplicitDeps, config);
+          this->AppendTargetOutputs(t.GT, build.ExplicitDeps, config,
+                                    DependOnTargetArtifact);
         }
       }
       for (DirectoryTarget::Dir const& d : dt.Children) {
diff --git a/Source/cmGlobalNinjaGenerator.h b/Source/cmGlobalNinjaGenerator.h
index 44e632f..10f5cf6 100644
--- a/Source/cmGlobalNinjaGenerator.h
+++ b/Source/cmGlobalNinjaGenerator.h
@@ -318,14 +318,13 @@
   virtual std::string OrderDependsTargetForTarget(
     cmGeneratorTarget const* target, const std::string& config) const;
 
-  void AppendTargetOutputs(
-    cmGeneratorTarget const* target, cmNinjaDeps& outputs,
-    const std::string& config,
-    cmNinjaTargetDepends depends = DependOnTargetArtifact);
-  void AppendTargetDepends(
-    cmGeneratorTarget const* target, cmNinjaDeps& outputs,
-    const std::string& config, const std::string& fileConfig,
-    cmNinjaTargetDepends depends = DependOnTargetArtifact);
+  void AppendTargetOutputs(cmGeneratorTarget const* target,
+                           cmNinjaDeps& outputs, const std::string& config,
+                           cmNinjaTargetDepends depends);
+  void AppendTargetDepends(cmGeneratorTarget const* target,
+                           cmNinjaDeps& outputs, const std::string& config,
+                           const std::string& fileConfig,
+                           cmNinjaTargetDepends depends);
   void AppendTargetDependsClosure(cmGeneratorTarget const* target,
                                   cmNinjaDeps& outputs,
                                   const std::string& config);
diff --git a/Source/cmGlobalUnixMakefileGenerator3.cxx b/Source/cmGlobalUnixMakefileGenerator3.cxx
index 1764429..ebc90b6 100644
--- a/Source/cmGlobalUnixMakefileGenerator3.cxx
+++ b/Source/cmGlobalUnixMakefileGenerator3.cxx
@@ -845,8 +845,7 @@
     for (const auto& gt : lg->GetGeneratorTargets()) {
       cmLocalGenerator* tlg = gt->GetLocalGenerator();
 
-      if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY ||
-          IsExcluded(lg.get(), gt.get())) {
+      if (!gt->IsInBuildSystem() || IsExcluded(lg.get(), gt.get())) {
         continue;
       }
 
@@ -881,7 +880,7 @@
   if (emitted.insert(target).second) {
     count = this->ProgressMap[target].Marks.size();
     for (cmTargetDepend const& depend : this->GetTargetDirectDepends(target)) {
-      if (depend->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+      if (!depend->IsInBuildSystem()) {
         continue;
       }
       count += this->CountProgressMarksInTarget(depend, emitted);
@@ -938,7 +937,7 @@
   for (cmTargetDepend const& i : this->GetTargetDirectDepends(target)) {
     // Create the target-level dependency.
     cmGeneratorTarget const* dep = i;
-    if (dep->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!dep->IsInBuildSystem()) {
       continue;
     }
     cmLocalUnixMakefileGenerator3* lg3 =
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index c851eea..f8b438a 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -339,7 +339,7 @@
   // loop over again and write out configurations for each target
   // in the solution
   for (cmGeneratorTarget const* target : projectTargets) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     cmProp expath = target->GetProperty("EXTERNAL_MSPROJECT");
@@ -369,7 +369,7 @@
 
   std::string rootBinaryDir = root->GetCurrentBinaryDirectory();
   for (cmGeneratorTarget const* target : projectTargets) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     bool written = false;
@@ -436,7 +436,7 @@
   std::ostream& fout, OrderedTargetDependSet const& projectTargets)
 {
   for (cmGeneratorTarget const* target : projectTargets) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     cmProp vcprojName = target->GetProperty("GENERATOR_FILE_NAME");
diff --git a/Source/cmGlobalVisualStudio8Generator.cxx b/Source/cmGlobalVisualStudio8Generator.cxx
index 29ca154..fcdfc50 100644
--- a/Source/cmGlobalVisualStudio8Generator.cxx
+++ b/Source/cmGlobalVisualStudio8Generator.cxx
@@ -325,7 +325,7 @@
   TargetDependSet const& unordered = this->GetTargetDirectDepends(gt);
   OrderedTargetDependSet depends(unordered, std::string());
   for (cmTargetDepend const& i : depends) {
-    if (i->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!i->IsInBuildSystem()) {
       continue;
     }
     std::string guid = this->GetGUID(i->GetName());
@@ -341,7 +341,7 @@
     if (cmGeneratorTarget* depTarget =
           target->GetLocalGenerator()->FindGeneratorTargetToUse(
             ui.Value.first)) {
-      if (depTarget->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
+      if (depTarget->IsInBuildSystem() &&
           depTarget->GetProperty("EXTERNAL_MSPROJECT")) {
         // This utility dependency names an external .vcproj target.
         // We use LinkLibraryDependencies="true" to link to it without
diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index b31d069..001d876 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -368,7 +368,7 @@
 void cmGlobalVisualStudioGenerator::FollowLinkDepends(
   const cmGeneratorTarget* target, std::set<const cmGeneratorTarget*>& linked)
 {
-  if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!target->IsInBuildSystem()) {
     return;
   }
   if (linked.insert(target).second &&
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index e54de5d..26f0bec 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -1199,7 +1199,7 @@
     return true;
   }
 
-  if (gtgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!gtgt->IsInBuildSystem()) {
     return true;
   }
 
@@ -1845,7 +1845,7 @@
                                                  cmXCodeObject* buildSettings,
                                                  const std::string& configName)
 {
-  if (gtgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!gtgt->IsInBuildSystem()) {
     return;
   }
 
@@ -2678,7 +2678,7 @@
 cmXCodeObject* cmGlobalXCodeGenerator::CreateXCodeTarget(
   cmGeneratorTarget* gtgt, cmXCodeObject* buildPhases)
 {
-  if (gtgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!gtgt->IsInBuildSystem()) {
     return nullptr;
   }
   cmXCodeObject* target = this->CreateObject(cmXCodeObject::PBXNativeTarget);
@@ -2821,7 +2821,7 @@
     cmSystemTools::Error("Error no target on xobject\n");
     return;
   }
-  if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!gt->IsInBuildSystem()) {
     return;
   }
 
@@ -3113,13 +3113,9 @@
       // end up with (empty anyhow) ZERO_CHECK, install, or test source
       // groups:
       //
-      if (gtgt->GetType() == cmStateEnums::GLOBAL_TARGET) {
-        continue;
-      }
-      if (gtgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
-        continue;
-      }
-      if (gtgt->GetName() == CMAKE_CHECK_BUILD_SYSTEM_TARGET) {
+      if (!gtgt->IsInBuildSystem() ||
+          gtgt->GetType() == cmStateEnums::GLOBAL_TARGET ||
+          gtgt->GetName() == CMAKE_CHECK_BUILD_SYSTEM_TARGET) {
         continue;
       }
 
@@ -3753,6 +3749,8 @@
   if (this->XcodeVersion >= 100) {
     xout.Element("key", "BuildSystemType");
     xout.Element("string", "Original");
+    xout.Element("key", "DisableBuildSystemDeprecationWarning");
+    xout.Element("true");
   }
   if (hasGeneratedSchemes) {
     xout.Element("key",
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 028053d..646cf5e 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -284,7 +284,7 @@
   // Generate the rule files for each target.
   const auto& targets = this->GetGeneratorTargets();
   for (const auto& target : targets) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     target->TraceDependencies();
@@ -760,7 +760,7 @@
   // Add our targets to the manifest for each configuration.
   const auto& targets = this->GetGeneratorTargets();
   for (const auto& target : targets) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     for (std::string const& c : configNames) {
@@ -797,7 +797,7 @@
 
     // Now that C/C++ _STANDARD values have been computed
     // set the values to ObjC/ObjCXX _STANDARD variables
-    if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
+    if (target->CanCompileSources()) {
       for (std::string const& c : configNames) {
         target->ComputeCompileFeatures(c, inferredEnabledLanguages);
       }
diff --git a/Source/cmLocalGhsMultiGenerator.cxx b/Source/cmLocalGhsMultiGenerator.cxx
index 098fa5a..a23ad57 100644
--- a/Source/cmLocalGhsMultiGenerator.cxx
+++ b/Source/cmLocalGhsMultiGenerator.cxx
@@ -11,7 +11,6 @@
 #include "cmGhsMultiTargetGenerator.h"
 #include "cmGlobalGenerator.h"
 #include "cmSourceFile.h"
-#include "cmStateTypes.h"
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 
@@ -33,7 +32,7 @@
 void cmLocalGhsMultiGenerator::GenerateTargetsDepthFirst(
   cmGeneratorTarget* target, std::vector<cmGeneratorTarget*>& remaining)
 {
-  if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!target->IsInBuildSystem()) {
     return;
   }
   // Find this target in the list of remaining targets.
diff --git a/Source/cmLocalNinjaGenerator.cxx b/Source/cmLocalNinjaGenerator.cxx
index aee7f45..ef34953 100644
--- a/Source/cmLocalNinjaGenerator.cxx
+++ b/Source/cmLocalNinjaGenerator.cxx
@@ -90,7 +90,7 @@
   }
 
   for (const auto& target : this->GetGeneratorTargets()) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     auto tg = cmNinjaTargetGenerator::New(target.get());
@@ -102,9 +102,10 @@
               this->GetGlobalGenerator()->IsMultiConfig()) {
             cmNinjaBuild phonyAlias("phony");
             this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-              target.get(), phonyAlias.Outputs, "");
+              target.get(), phonyAlias.Outputs, "", DependOnTargetArtifact);
             this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-              target.get(), phonyAlias.ExplicitDeps, config);
+              target.get(), phonyAlias.ExplicitDeps, config,
+              DependOnTargetArtifact);
             this->GetGlobalNinjaGenerator()->WriteBuild(
               *this->GetGlobalNinjaGenerator()->GetConfigFileStream(config),
               phonyAlias);
@@ -115,11 +116,12 @@
           if (!this->GetGlobalNinjaGenerator()->GetDefaultConfigs().empty()) {
             cmNinjaBuild phonyAlias("phony");
             this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-              target.get(), phonyAlias.Outputs, "");
+              target.get(), phonyAlias.Outputs, "", DependOnTargetArtifact);
             for (auto const& config :
                  this->GetGlobalNinjaGenerator()->GetDefaultConfigs()) {
               this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-                target.get(), phonyAlias.ExplicitDeps, config);
+                target.get(), phonyAlias.ExplicitDeps, config,
+                DependOnTargetArtifact);
             }
             this->GetGlobalNinjaGenerator()->WriteBuild(
               *this->GetGlobalNinjaGenerator()->GetDefaultFileStream(),
@@ -127,10 +129,11 @@
           }
           cmNinjaBuild phonyAlias("phony");
           this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-            target.get(), phonyAlias.Outputs, "all");
+            target.get(), phonyAlias.Outputs, "all", DependOnTargetArtifact);
           for (auto const& config : this->GetConfigNames()) {
             this->GetGlobalNinjaGenerator()->AppendTargetOutputs(
-              target.get(), phonyAlias.ExplicitDeps, config);
+              target.get(), phonyAlias.ExplicitDeps, config,
+              DependOnTargetArtifact);
           }
           this->GetGlobalNinjaGenerator()->WriteBuild(
             *this->GetGlobalNinjaGenerator()->GetDefaultFileStream(),
@@ -355,8 +358,8 @@
                                                 cmNinjaDeps& outputs,
                                                 const std::string& config)
 {
-  this->GetGlobalNinjaGenerator()->AppendTargetOutputs(target, outputs,
-                                                       config);
+  this->GetGlobalNinjaGenerator()->AppendTargetOutputs(target, outputs, config,
+                                                       DependOnTargetArtifact);
 }
 
 void cmLocalNinjaGenerator::AppendTargetDepends(cmGeneratorTarget* target,
diff --git a/Source/cmLocalNinjaGenerator.h b/Source/cmLocalNinjaGenerator.h
index ef160e7..73c0cde 100644
--- a/Source/cmLocalNinjaGenerator.h
+++ b/Source/cmLocalNinjaGenerator.h
@@ -66,10 +66,10 @@
 
   void AppendTargetOutputs(cmGeneratorTarget* target, cmNinjaDeps& outputs,
                            const std::string& config);
-  void AppendTargetDepends(
-    cmGeneratorTarget* target, cmNinjaDeps& outputs, const std::string& config,
-    const std::string& fileConfig,
-    cmNinjaTargetDepends depends = DependOnTargetArtifact);
+  void AppendTargetDepends(cmGeneratorTarget* target, cmNinjaDeps& outputs,
+                           const std::string& config,
+                           const std::string& fileConfig,
+                           cmNinjaTargetDepends depends);
 
   void AddCustomCommandTarget(cmCustomCommand const* cc,
                               cmGeneratorTarget* target);
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index df4bf6a..23e2a94 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -101,7 +101,7 @@
   cmGlobalUnixMakefileGenerator3* gg =
     static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
   for (const auto& target : this->GetGeneratorTargets()) {
-    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!target->IsInBuildSystem()) {
       continue;
     }
     std::unique_ptr<cmMakefileTargetGenerator> tg(
@@ -137,7 +137,7 @@
   std::map<std::string, LocalObjectInfo>& localObjectFiles)
 {
   for (const auto& gt : this->GetGeneratorTargets()) {
-    if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!gt->CanCompileSources()) {
       continue;
     }
     std::vector<cmSourceFile const*> objectSources;
diff --git a/Source/cmLocalVisualStudio10Generator.cxx b/Source/cmLocalVisualStudio10Generator.cxx
index 9076e26..6c7d6c6 100644
--- a/Source/cmLocalVisualStudio10Generator.cxx
+++ b/Source/cmLocalVisualStudio10Generator.cxx
@@ -69,7 +69,7 @@
 void cmLocalVisualStudio10Generator::GenerateTargetsDepthFirst(
   cmGeneratorTarget* target, std::vector<cmGeneratorTarget*>& remaining)
 {
-  if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  if (!target->IsInBuildSystem()) {
     return;
   }
   // Find this target in the list of remaining targets.
diff --git a/Source/cmLocalVisualStudio7Generator.cxx b/Source/cmLocalVisualStudio7Generator.cxx
index ad61ad3..fec6a9d 100644
--- a/Source/cmLocalVisualStudio7Generator.cxx
+++ b/Source/cmLocalVisualStudio7Generator.cxx
@@ -66,7 +66,7 @@
   // Now create GUIDs for targets
   const auto& tgts = this->GetGeneratorTargets();
   for (const auto& l : tgts) {
-    if (l->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!l->IsInBuildSystem()) {
       continue;
     }
     cmProp path = l->GetProperty("EXTERNAL_MSPROJECT");
@@ -129,7 +129,7 @@
 
   // Create the project file for each target.
   for (const auto& l : tgts) {
-    if (l->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!l->IsInBuildSystem()) {
       continue;
     }
     // INCLUDE_EXTERNAL_MSPROJECT command only affects the workspace
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index de68371..924a44e 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -743,7 +743,8 @@
 
   // Gather order-only dependencies.
   this->GetLocalGenerator()->AppendTargetDepends(
-    this->GetGeneratorTarget(), build.OrderOnlyDeps, config, config);
+    this->GetGeneratorTarget(), build.OrderOnlyDeps, config, config,
+    DependOnTargetArtifact);
 
   // Write the build statement for this target.
   bool usedResponseFile = false;
@@ -1168,8 +1169,8 @@
              globalGen->IsMultiConfig() ? cmStrCat('.', config) : "", ".rsp"));
 
   // Gather order-only dependencies.
-  this->GetLocalGenerator()->AppendTargetDepends(gt, linkBuild.OrderOnlyDeps,
-                                                 config, fileConfig);
+  this->GetLocalGenerator()->AppendTargetDepends(
+    gt, linkBuild.OrderOnlyDeps, config, fileConfig, DependOnTargetArtifact);
 
   // Add order-only dependencies on versioning symlinks of shared libs we link.
   if (!this->GeneratorTarget->IsDLLPlatform()) {
diff --git a/Source/cmNinjaUtilityTargetGenerator.cxx b/Source/cmNinjaUtilityTargetGenerator.cxx
index 8d863c3..9508bb9 100644
--- a/Source/cmNinjaUtilityTargetGenerator.cxx
+++ b/Source/cmNinjaUtilityTargetGenerator.cxx
@@ -101,7 +101,8 @@
     lg->AppendTargetOutputs(genTarget, gg->GetByproductsForCleanTarget(),
                             config);
   }
-  lg->AppendTargetDepends(genTarget, deps, config, config);
+  lg->AppendTargetDepends(genTarget, deps, config, config,
+                          DependOnTargetArtifact);
 
   if (commands.empty()) {
     phonyBuild.Comment = "Utility command for " + this->GetTargetName();
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index aec9afa..70bffa6 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -272,8 +272,7 @@
   };
 
   // Setup default property values.
-  if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
-      this->GetType() != cmStateEnums::UTILITY) {
+  if (this->CanCompileSources()) {
     initProp("ANDROID_API");
     initProp("ANDROID_API_MIN");
     initProp("ANDROID_ARCH");
@@ -343,10 +342,12 @@
     initProp("C_STANDARD");
     initProp("C_STANDARD_REQUIRED");
     initProp("C_EXTENSIONS");
+    initProp("C_VISIBILITY_PRESET");
     initProp("OBJC_COMPILER_LAUNCHER");
     initProp("OBJC_STANDARD");
     initProp("OBJC_STANDARD_REQUIRED");
     initProp("OBJC_EXTENSIONS");
+    initProp("OBJC_VISIBILITY_PRESET");
     initProp("CXX_CLANG_TIDY");
     initProp("CXX_COMPILER_LAUNCHER");
     initProp("CXX_CPPLINT");
@@ -355,10 +356,12 @@
     initProp("CXX_STANDARD");
     initProp("CXX_STANDARD_REQUIRED");
     initProp("CXX_EXTENSIONS");
+    initProp("CXX_VISIBILITY_PRESET");
     initProp("OBJCXX_COMPILER_LAUNCHER");
     initProp("OBJCXX_STANDARD");
     initProp("OBJCXX_STANDARD_REQUIRED");
     initProp("OBJCXX_EXTENSIONS");
+    initProp("OBJCXX_VISIBILITY_PRESET");
     initProp("CUDA_STANDARD");
     initProp("CUDA_STANDARD_REQUIRED");
     initProp("CUDA_EXTENSIONS");
@@ -367,6 +370,11 @@
     initProp("CUDA_RESOLVE_DEVICE_SYMBOLS");
     initProp("CUDA_RUNTIME_LIBRARY");
     initProp("CUDA_ARCHITECTURES");
+    initProp("CUDA_VISIBILITY_PRESET");
+    initProp("VISIBILITY_INLINES_HIDDEN");
+    initProp("JOB_POOL_COMPILE");
+    initProp("JOB_POOL_LINK");
+    initProp("JOB_POOL_PRECOMPILE_HEADER");
     initProp("LINK_SEARCH_START_STATIC");
     initProp("LINK_SEARCH_END_STATIC");
     initProp("Swift_LANGUAGE_VERSION");
@@ -410,7 +418,8 @@
   }
 
   // Setup per-configuration property default values.
-  if (this->GetType() != cmStateEnums::UTILITY) {
+  if (this->GetType() != cmStateEnums::UTILITY &&
+      this->GetType() != cmStateEnums::GLOBAL_TARGET) {
     static const auto configProps = {
       /* clang-format needs this comment to break after the opening brace */
       "ARCHIVE_OUTPUT_DIRECTORY_",     "LIBRARY_OUTPUT_DIRECTORY_",
@@ -487,16 +496,6 @@
                impl->Makefile->GetLinkDirectoriesBacktraces());
   }
 
-  if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
-      this->GetType() != cmStateEnums::UTILITY) {
-    initProp("C_VISIBILITY_PRESET");
-    initProp("CXX_VISIBILITY_PRESET");
-    initProp("OBJC_VISIBILITY_PRESET");
-    initProp("OBJCXX_VISIBILITY_PRESET");
-    initProp("CUDA_VISIBILITY_PRESET");
-    initProp("VISIBILITY_INLINES_HIDDEN");
-  }
-
   if (impl->TargetType == cmStateEnums::EXECUTABLE) {
     initProp("ANDROID_GUI");
     initProp("CROSSCOMPILING_EMULATOR");
@@ -505,6 +504,8 @@
   if (impl->TargetType == cmStateEnums::SHARED_LIBRARY ||
       impl->TargetType == cmStateEnums::MODULE_LIBRARY) {
     this->SetProperty("POSITION_INDEPENDENT_CODE", "True");
+  } else if (this->CanCompileSources()) {
+    initProp("POSITION_INDEPENDENT_CODE");
   }
   if (impl->TargetType == cmStateEnums::SHARED_LIBRARY ||
       impl->TargetType == cmStateEnums::EXECUTABLE) {
@@ -512,11 +513,6 @@
     initProp("WINDOWS_EXPORT_ALL_SYMBOLS");
   }
 
-  if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
-      this->GetType() != cmStateEnums::UTILITY) {
-    initProp("POSITION_INDEPENDENT_CODE");
-  }
-
   // Record current policies for later use.
   impl->Makefile->RecordPolicies(impl->PolicyMap);
 
@@ -528,13 +524,6 @@
     impl->PolicyMap.Set(cmPolicies::CMP0022, cmPolicies::NEW);
   }
 
-  if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
-      this->GetType() != cmStateEnums::UTILITY) {
-    initProp("JOB_POOL_COMPILE");
-    initProp("JOB_POOL_LINK");
-    initProp("JOB_POOL_PRECOMPILE_HEADER");
-  }
-
   if (impl->TargetType <= cmStateEnums::GLOBAL_TARGET) {
     initProp("DOTNET_TARGET_FRAMEWORK");
     initProp("DOTNET_TARGET_FRAMEWORK_VERSION");
@@ -1917,6 +1906,27 @@
   return impl->PerConfig;
 }
 
+bool cmTarget::CanCompileSources() const
+{
+  if (this->IsImported()) {
+    return false;
+  }
+  switch (this->GetType()) {
+    case cmStateEnums::EXECUTABLE:
+    case cmStateEnums::STATIC_LIBRARY:
+    case cmStateEnums::SHARED_LIBRARY:
+    case cmStateEnums::MODULE_LIBRARY:
+    case cmStateEnums::OBJECT_LIBRARY:
+      return true;
+    case cmStateEnums::UTILITY:
+    case cmStateEnums::INTERFACE_LIBRARY:
+    case cmStateEnums::GLOBAL_TARGET:
+    case cmStateEnums::UNKNOWN_LIBRARY:
+      break;
+  }
+  return false;
+}
+
 const char* cmTarget::GetSuffixVariableInternal(
   cmStateEnums::ArtifactType artifact) const
 {
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 7a16de8..43f1887 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -196,6 +196,7 @@
   bool IsImported() const;
   bool IsImportedGloballyVisible() const;
   bool IsPerConfig() const;
+  bool CanCompileSources() const;
 
   bool GetMappedConfig(std::string const& desired_config, cmProp& loc,
                        cmProp& imp, std::string& suffix) const;
diff --git a/Source/cmTestGenerator.cxx b/Source/cmTestGenerator.cxx
index 7c0ce71..78b230c 100644
--- a/Source/cmTestGenerator.cxx
+++ b/Source/cmTestGenerator.cxx
@@ -77,7 +77,7 @@
   cmGeneratorExpression ge(this->Test->GetBacktrace());
 
   // Start the test command.
-  os << indent << "add_test(\"" << this->Test->GetName() << "\" ";
+  os << indent << "add_test(" << this->Test->GetName() << " ";
 
   // Evaluate command line arguments
   std::vector<std::string> argv =
@@ -127,8 +127,8 @@
   os << ")\n";
 
   // Output properties for the test.
-  os << indent << "set_tests_properties(\"" << this->Test->GetName()
-     << "\" PROPERTIES ";
+  os << indent << "set_tests_properties(" << this->Test->GetName()
+     << " PROPERTIES ";
   for (auto const& i : this->Test->GetProperties().GetList()) {
     os << " " << i.first << " "
        << cmOutputConverter::EscapeForCMake(
@@ -140,8 +140,7 @@
 
 void cmTestGenerator::GenerateScriptNoConfig(std::ostream& os, Indent indent)
 {
-  os << indent << "add_test(\"" << this->Test->GetName()
-     << "\" NOT_AVAILABLE)\n";
+  os << indent << "add_test(" << this->Test->GetName() << " NOT_AVAILABLE)\n";
 }
 
 bool cmTestGenerator::NeedsScriptNoConfig() const
@@ -161,8 +160,9 @@
 
   std::string exe = command[0];
   cmSystemTools::ConvertToUnixSlashes(exe);
-  fout << indent << "add_test(\"" << this->Test->GetName() << "\" \"" << exe
-       << "\"";
+  fout << indent;
+  fout << "add_test(";
+  fout << this->Test->GetName() << " \"" << exe << "\"";
 
   for (std::string const& arg : cmMakeRange(command).advance(1)) {
     // Just double-quote all arguments so they are re-parsed
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index f291cbd..6369c1f 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -2919,6 +2919,12 @@
     clOptions.RemoveFlag("SpectreMitigation");
   }
 
+  // Remove any target-wide -TC or -TP flag added by the project.
+  // Such flags are unnecessary and break our model of language selection.
+  if (langForClCompile == "C" || langForClCompile == "CXX") {
+    clOptions.RemoveFlag("CompileAs");
+  }
+
   this->ClOptions[configName] = std::move(pOptions);
   return true;
 }
@@ -4138,7 +4144,7 @@
   Elem e1(e0, "ItemGroup");
   e1.SetHasElements();
   for (cmGeneratorTarget const* dt : depends) {
-    if (dt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    if (!dt->IsInBuildSystem()) {
       continue;
     }
     // skip fortran targets as they can not be processed by MSBuild
diff --git a/Source/kwsys/Glob.hxx.in b/Source/kwsys/Glob.hxx.in
index b5a34d5..e8474e2 100644
--- a/Source/kwsys/Glob.hxx.in
+++ b/Source/kwsys/Glob.hxx.in
@@ -126,8 +126,8 @@
   bool RecurseListDirs;
 
 private:
-  Glob(const Glob&);           // Not implemented.
-  void operator=(const Glob&); // Not implemented.
+  Glob(const Glob&) = delete;
+  void operator=(const Glob&) = delete;
 };
 
 } // namespace @KWSYS_NAMESPACE@
diff --git a/Source/kwsys/ProcessUNIX.c b/Source/kwsys/ProcessUNIX.c
index cc45529..e1e7721 100644
--- a/Source/kwsys/ProcessUNIX.c
+++ b/Source/kwsys/ProcessUNIX.c
@@ -2128,17 +2128,17 @@
 #endif
 #ifdef SIGABRT
     case SIGABRT:
-      KWSYSPE_CASE(Other, "Child aborted");
+      KWSYSPE_CASE(Other, "Subprocess aborted");
       break;
 #endif
 #ifdef SIGKILL
     case SIGKILL:
-      KWSYSPE_CASE(Other, "Child killed");
+      KWSYSPE_CASE(Other, "Subprocess killed");
       break;
 #endif
 #ifdef SIGTERM
     case SIGTERM:
-      KWSYSPE_CASE(Other, "Child terminated");
+      KWSYSPE_CASE(Other, "Subprocess terminated");
       break;
 #endif
 #ifdef SIGHUP
diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index 25705ea..2c39b91 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -1453,7 +1453,7 @@
 
 bool SystemTools::Touch(const std::string& filename, bool create)
 {
-  if (!SystemTools::PathExists(filename)) {
+  if (!SystemTools::FileExists(filename)) {
     if (create) {
       FILE* file = Fopen(filename, "a+b");
       if (file) {
diff --git a/Source/kwsys/testProcess.c b/Source/kwsys/testProcess.c
index 0c658f5..eed770c 100644
--- a/Source/kwsys/testProcess.c
+++ b/Source/kwsys/testProcess.c
@@ -450,24 +450,25 @@
       printf("The process is still executing.\n");
       break;
     case kwsysProcess_State_Expired:
-      printf("Child was killed when timeout expired.\n");
+      printf("Subprocess was killed when timeout expired.\n");
       break;
     case kwsysProcess_State_Exited:
-      printf("Child exited with value = %d\n", kwsysProcess_GetExitValue(kp));
+      printf("Subprocess exited with value = %d\n",
+             kwsysProcess_GetExitValue(kp));
       result = ((exception != kwsysProcess_GetExitException(kp)) ||
                 (value != kwsysProcess_GetExitValue(kp)));
       break;
     case kwsysProcess_State_Killed:
-      printf("Child was killed by parent.\n");
+      printf("Subprocess was killed by parent.\n");
       break;
     case kwsysProcess_State_Exception:
-      printf("Child terminated abnormally: %s\n",
+      printf("Subprocess terminated abnormally: %s\n",
              kwsysProcess_GetExceptionString(kp));
       result = ((exception != kwsysProcess_GetExitException(kp)) ||
                 (value != kwsysProcess_GetExitValue(kp)));
       break;
     case kwsysProcess_State_Disowned:
-      printf("Child was disowned.\n");
+      printf("Subprocess was disowned.\n");
       break;
     case kwsysProcess_State_Error:
       printf("Error in administrating child process: [%s]\n",
diff --git a/Source/kwsys/testSystemTools.cxx b/Source/kwsys/testSystemTools.cxx
index 1d34614..cfa420d 100644
--- a/Source/kwsys/testSystemTools.cxx
+++ b/Source/kwsys/testSystemTools.cxx
@@ -422,6 +422,28 @@
     res = false;
   }
 
+#if !defined(_WIN32)
+  std::string const testBadSymlink(testNewDir + "/badSymlink.txt");
+  std::string const testBadSymlinkTgt(testNewDir + "/missing/symlinkTgt.txt");
+  if (!kwsys::SystemTools::CreateSymlink(testBadSymlinkTgt, testBadSymlink)) {
+    std::cerr << "Problem with CreateSymlink for: " << testBadSymlink << " -> "
+              << testBadSymlinkTgt << std::endl;
+    res = false;
+  }
+
+  if (!kwsys::SystemTools::Touch(testBadSymlink, false)) {
+    std::cerr << "Problem with Touch (no create) for: " << testBadSymlink
+              << std::endl;
+    res = false;
+  }
+#endif
+
+  if (!kwsys::SystemTools::Touch(testNewDir, false)) {
+    std::cerr << "Problem with Touch (no create) for: " << testNewDir
+              << std::endl;
+    res = false;
+  }
+
   kwsys::SystemTools::Touch(testNewFile, true);
   if (!kwsys::SystemTools::RemoveADirectory(testNewDir)) {
     std::cerr << "Problem with RemoveADirectory for: " << testNewDir
diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 19aa4c4..4a774dd 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -2906,7 +2906,7 @@
       PASS_REGULAR_EXPRESSION "Failed")
   else()
     set_tests_properties(CTestTestCrash PROPERTIES
-      PASS_REGULAR_EXPRESSION "(Illegal|SegFault|Child aborted)")
+      PASS_REGULAR_EXPRESSION "(Illegal|SegFault|Subprocess aborted)")
   endif()
 
   configure_file(
diff --git a/Tests/RunCMake/AndroidTestUtilities/check.cmake b/Tests/RunCMake/AndroidTestUtilities/check.cmake
index c24a3cd..ccd4d74 100644
--- a/Tests/RunCMake/AndroidTestUtilities/check.cmake
+++ b/Tests/RunCMake/AndroidTestUtilities/check.cmake
@@ -13,7 +13,7 @@
 endfunction()
 
 function(check_for_setup_test)
-  file(STRINGS "${RunCMake_TEST_BINARY_DIR}/CTestTestfile.cmake" output_var REGEX "add_test\\(\"setup_test\".*")
+  file(STRINGS "${RunCMake_TEST_BINARY_DIR}/CTestTestfile.cmake" output_var REGEX "add_test\\(setup_test.*")
   if(NOT output_var)
     set(RunCMake_TEST_FAILED "Could not find the test: setup_test" PARENT_SCOPE)
   endif()
diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index 36b016f..4d2a53c 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -289,7 +289,6 @@
 add_RunCMake_test(add_executable)
 add_RunCMake_test(add_library)
 add_RunCMake_test(add_subdirectory)
-add_RunCMake_test(add_test)
 add_RunCMake_test(build_command)
 add_executable(exit_code exit_code.c)
 set(execute_process_ARGS -DEXIT_CODE_EXE=$<TARGET_FILE:exit_code>)
diff --git a/Tests/RunCMake/CrosscompilingEmulator/AddTest-check.cmake b/Tests/RunCMake/CrosscompilingEmulator/AddTest-check.cmake
index 3cbbc07..588b77b 100644
--- a/Tests/RunCMake/CrosscompilingEmulator/AddTest-check.cmake
+++ b/Tests/RunCMake/CrosscompilingEmulator/AddTest-check.cmake
@@ -7,22 +7,22 @@
 
 set(error_details "There is a problem with generated test file: ${testfile}")
 
-if(testfile_contents MATCHES "add_test[(][\"]DoesNotUseEmulator[\"] [^\n]+pseudo_emulator[^\n]+\n")
+if(testfile_contents MATCHES "add_test[(]DoesNotUseEmulator [^\n]+pseudo_emulator[^\n]+\n")
   message(SEND_ERROR "Used emulator when it should not be used. ${error_details}")
 endif()
 
-if(NOT testfile_contents MATCHES "add_test[(][\"]UsesEmulator[\"] [^\n]+pseudo_emulator[^\n]+\n")
+if(NOT testfile_contents MATCHES "add_test[(]UsesEmulator [^\n]+pseudo_emulator[^\n]+\n")
   message(SEND_ERROR "Did not use emulator when it should be used. ${error_details}")
 endif()
 
-if(testfile_contents MATCHES "add_test[(][\"]DoesNotUseEmulatorWithGenex[\"] [^\n]+pseudo_emulator[^\n]+\n")
+if(testfile_contents MATCHES "add_test[(]DoesNotUseEmulatorWithGenex [^\n]+pseudo_emulator[^\n]+\n")
   message(SEND_ERROR "Used emulator when it should not be used. ${error_details}")
 endif()
 
-if(NOT testfile_contents MATCHES "add_test[(][\"]UsesEmulatorWithExecTargetFromSubdirAddedWithoutGenex[\"] [^\n]+pseudo_emulator[^\n]+\n")
+if(NOT testfile_contents MATCHES "add_test[(]UsesEmulatorWithExecTargetFromSubdirAddedWithoutGenex [^\n]+pseudo_emulator[^\n]+\n")
   message(SEND_ERROR "Did not use emulator when it should be used. ${error_details}")
 endif()
 
-if(testfile_contents MATCHES "add_test[(][\"]DoesNotUseEmulatorWithExecTargetFromSubdirAddedWithGenex[\"] [^\n]+pseudo_emulator[^\n]+\n")
+if(testfile_contents MATCHES "add_test[(]DoesNotUseEmulatorWithExecTargetFromSubdirAddedWithGenex [^\n]+pseudo_emulator[^\n]+\n")
   message(SEND_ERROR "Used emulator when it should not be used. ${error_details}")
 endif()
diff --git a/Tests/RunCMake/ExcludeFromAll/RunCMakeTest.cmake b/Tests/RunCMake/ExcludeFromAll/RunCMakeTest.cmake
index 25201e4..2b4fc89 100644
--- a/Tests/RunCMake/ExcludeFromAll/RunCMakeTest.cmake
+++ b/Tests/RunCMake/ExcludeFromAll/RunCMakeTest.cmake
@@ -9,7 +9,7 @@
         -DCMAKE_BUILD_TYPE=${config}
         -DTOOL_EXCLUDE_FROM_ALL=${exclude_from_all_value})
     set(RunCMake_TEST_NO_CLEAN 1)
-    include(${RunCMake_TEST_BINARY_DIR}/target_files.cmake)
+    include(${RunCMake_TEST_BINARY_DIR}/target_files_${config}.cmake)
     run_cmake_command(${case}-build ${CMAKE_COMMAND} --build . --config ${config})
 endfunction()
 
diff --git a/Tests/RunCMake/ExcludeFromAll/error-on-mixed-config-stderr.txt b/Tests/RunCMake/ExcludeFromAll/error-on-mixed-config-stderr.txt
index eee5278..6dc785f 100644
--- a/Tests/RunCMake/ExcludeFromAll/error-on-mixed-config-stderr.txt
+++ b/Tests/RunCMake/ExcludeFromAll/error-on-mixed-config-stderr.txt
@@ -1,3 +1,3 @@
 CMake Error in CMakeLists.txt:
-  The EXCLUDED_FROM_ALL property of target "release_only_tool" varies by
+  The EXCLUDE_FROM_ALL property of target "release_only_tool" varies by
   configuration.  This is not supported by the "[^"]+"
diff --git a/Tests/RunCMake/ExcludeFromAll/main.c b/Tests/RunCMake/ExcludeFromAll/main.c
index 5047a34..f8b643a 100644
--- a/Tests/RunCMake/ExcludeFromAll/main.c
+++ b/Tests/RunCMake/ExcludeFromAll/main.c
@@ -1,3 +1,4 @@
 int main()
 {
+  return 0;
 }
diff --git a/Tests/RunCMake/ExcludeFromAll/single-config.cmake b/Tests/RunCMake/ExcludeFromAll/single-config.cmake
index 71a9f06..aa49c21 100644
--- a/Tests/RunCMake/ExcludeFromAll/single-config.cmake
+++ b/Tests/RunCMake/ExcludeFromAll/single-config.cmake
@@ -2,10 +2,6 @@
 add_executable(tool main.c)
 set_property(TARGET tool PROPERTY EXCLUDE_FROM_ALL "${TOOL_EXCLUDE_FROM_ALL}")
 
-include(../NinjaMultiConfig/Common.cmake)
-set(orig_CMAKE_CONFIGURATION_TYPES ${CMAKE_CONFIGURATION_TYPES})
-if("${CMAKE_CONFIGURATION_TYPES}" STREQUAL "")
-    set(CMAKE_CONFIGURATION_TYPES ${CMAKE_BUILD_TYPE})
-endif()
-generate_output_files(tool)
-set(CMAKE_CONFIGURATION_TYPES ${orig_CMAKE_CONFIGURATION_TYPES})
+file(GENERATE OUTPUT "${CMAKE_BINARY_DIR}/target_files_$<CONFIG>.cmake" CONTENT [[
+set(TARGET_FILE_tool_$<CONFIG> [==[$<TARGET_FILE:tool>]==])
+]])
diff --git a/Tests/RunCMake/add_test/CMakeLists.txt.in b/Tests/RunCMake/add_test/CMakeLists.txt.in
deleted file mode 100644
index 495240d..0000000
--- a/Tests/RunCMake/add_test/CMakeLists.txt.in
+++ /dev/null
@@ -1,27 +0,0 @@
-if (NOT DEFINED RUN_AS_SCRIPT)
-
-  cmake_minimum_required(VERSION 3.7)
-  project(@CASE_NAME@ NONE)
-  include(CTest)
-
-  # Two fallback tests for set_tests_properties.
-  add_test(NAME PrefixTest COMMAND "${CMAKE_COMMAND}" --version)
-  add_test(NAME SuffixTest COMMAND "${CMAKE_COMMAND}" --version)
-
-  add_test(
-    NAME @CASE_CMAKELISTS_NAME_1@
-    COMMAND "${CMAKE_COMMAND}" -D RUN_AS_SCRIPT=1 -P "${CMAKE_CURRENT_LIST_FILE}"
-  )
-  set_tests_properties(
-    @CASE_CMAKELISTS_NAME_2@
-    PROPERTIES
-      ENVIRONMENT CMAKE_add_test_ENVVAR=1
-  )
-
-else()
-
-  if(NOT DEFINED ENV{CMAKE_add_test_ENVVAR})
-    message(FATAL_ERROR "Setting property on test did not succeed!")
-  endif()
-
-endif()
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument1-stdout.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument1-stdout.txt
deleted file mode 100644
index 00865d0..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \[=\[BracketArgument;SuffixTest\]=\] \.+[ ]+Passed
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument2-stdout.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument2-stdout.txt
deleted file mode 100644
index a744beb..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: BracketArgument;SuffixTest \.+[ ]+Passed
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument3-result.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument3-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument3-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument3-stderr.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument3-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument3-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument4-result.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument4-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument4-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsBracketArgument4-stderr.txt b/Tests/RunCMake/add_test/NameContainsBracketArgument4-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsBracketArgument4-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-result.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote1-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stderr.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stderr.txt
deleted file mode 100644
index 0661945..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stderr.txt
+++ /dev/null
@@ -1 +0,0 @@
-Unable to find executable: SuffixTest
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stdout.txt
deleted file mode 100644
index 4875409..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: EscapedQuote \.+\*\*\*Not Run
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-result.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote2-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stderr.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stderr.txt
deleted file mode 100644
index 0661945..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stderr.txt
+++ /dev/null
@@ -1 +0,0 @@
-Unable to find executable: SuffixTest
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stdout.txt
deleted file mode 100644
index 4875409..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: EscapedQuote \.+\*\*\*Not Run
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-result.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote3-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stderr.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stderr.txt
deleted file mode 100644
index 0661945..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stderr.txt
+++ /dev/null
@@ -1 +0,0 @@
-Unable to find executable: SuffixTest
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stdout.txt
deleted file mode 100644
index 4875409..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: EscapedQuote \.+\*\*\*Not Run
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-result.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote4-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stderr.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stderr.txt
deleted file mode 100644
index 0661945..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stderr.txt
+++ /dev/null
@@ -1 +0,0 @@
-Unable to find executable: SuffixTest
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stdout.txt
deleted file mode 100644
index 4875409..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedQuote4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: EscapedQuote \.+\*\*\*Not Run
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars1-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars1-stdout.txt
deleted file mode 100644
index 80435b6..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \(\) # \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars2-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars2-stdout.txt
deleted file mode 100644
index 80435b6..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \(\) # \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars3-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars3-stdout.txt
deleted file mode 100644
index 80435b6..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \(\) # \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars4-stdout.txt b/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars4-stdout.txt
deleted file mode 100644
index 80435b6..0000000
--- a/Tests/RunCMake/add_test/NameContainsEscapedSpecialChars4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \(\) # \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax1-stdout.txt b/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax1-stdout.txt
deleted file mode 100644
index 172ff99..0000000
--- a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \$<BOOL:0> \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax2-stdout.txt b/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax2-stdout.txt
deleted file mode 100644
index 172ff99..0000000
--- a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \$<BOOL:0> \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax3-stdout.txt b/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax3-stdout.txt
deleted file mode 100644
index 172ff99..0000000
--- a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \$<BOOL:0> \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax4-stdout.txt b/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax4-stdout.txt
deleted file mode 100644
index 172ff99..0000000
--- a/Tests/RunCMake/add_test/NameContainsGeneratorExpressionSyntax4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: \$<BOOL:0> \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars1-stdout.txt b/Tests/RunCMake/add_test/NameContainsOtherSpecialChars1-stdout.txt
deleted file mode 100644
index 83e3f86..0000000
--- a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: !§\$%&/ü:\*😤~ \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars2-stdout.txt b/Tests/RunCMake/add_test/NameContainsOtherSpecialChars2-stdout.txt
deleted file mode 100644
index 83e3f86..0000000
--- a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: !§\$%&/ü:\*😤~ \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars3-stdout.txt b/Tests/RunCMake/add_test/NameContainsOtherSpecialChars3-stdout.txt
deleted file mode 100644
index 83e3f86..0000000
--- a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: !§\$%&/ü:\*😤~ \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars4-stdout.txt b/Tests/RunCMake/add_test/NameContainsOtherSpecialChars4-stdout.txt
deleted file mode 100644
index 83e3f86..0000000
--- a/Tests/RunCMake/add_test/NameContainsOtherSpecialChars4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: !§\$%&/ü:\*😤~ \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon1-stdout.txt b/Tests/RunCMake/add_test/NameContainsSemicolon1-stdout.txt
deleted file mode 100644
index 0fbf486..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: PrefixTest;SuffixTest \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon2-result.txt b/Tests/RunCMake/add_test/NameContainsSemicolon2-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon2-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon2-stderr.txt b/Tests/RunCMake/add_test/NameContainsSemicolon2-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon2-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon3-stdout.txt b/Tests/RunCMake/add_test/NameContainsSemicolon3-stdout.txt
deleted file mode 100644
index c5ab1d8..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon3-stdout.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-3/3 Test #3: PrefixTest;SuffixTest \.+\*\*\*Failed.*
-CMake Error at .+/CMakeLists.txt:[0-9]+ \(message\):
-[ ]*Setting property on test did not succeed!
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon4-result.txt b/Tests/RunCMake/add_test/NameContainsSemicolon4-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon4-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsSemicolon4-stderr.txt b/Tests/RunCMake/add_test/NameContainsSemicolon4-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsSemicolon4-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces1-stdout.txt b/Tests/RunCMake/add_test/NameContainsSpaces1-stdout.txt
deleted file mode 100644
index a255fb1..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: PrefixTest SuffixTest \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces2-result.txt b/Tests/RunCMake/add_test/NameContainsSpaces2-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces2-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces2-stderr.txt b/Tests/RunCMake/add_test/NameContainsSpaces2-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces2-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces3-stdout.txt b/Tests/RunCMake/add_test/NameContainsSpaces3-stdout.txt
deleted file mode 100644
index 3d42b0b..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces3-stdout.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-3/3 Test #3: PrefixTest SuffixTest \.+\*\*\*Failed.*
-CMake Error at .+/CMakeLists.txt:[0-9]+ \(message\):
-[ ]*Setting property on test did not succeed!
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces4-result.txt b/Tests/RunCMake/add_test/NameContainsSpaces4-result.txt
deleted file mode 100644
index b57e2de..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces4-result.txt
+++ /dev/null
@@ -1 +0,0 @@
-(-1|255)
diff --git a/Tests/RunCMake/add_test/NameContainsSpaces4-stderr.txt b/Tests/RunCMake/add_test/NameContainsSpaces4-stderr.txt
deleted file mode 100644
index 32c2112..0000000
--- a/Tests/RunCMake/add_test/NameContainsSpaces4-stderr.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-Error\(s\) when configuring the project
-No tests were found!!!
diff --git a/Tests/RunCMake/add_test/NameContainsValidSpecialChars1-stdout.txt b/Tests/RunCMake/add_test/NameContainsValidSpecialChars1-stdout.txt
deleted file mode 100644
index ae1a0b1..0000000
--- a/Tests/RunCMake/add_test/NameContainsValidSpecialChars1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abc_\.\+-012 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsValidSpecialChars2-stdout.txt b/Tests/RunCMake/add_test/NameContainsValidSpecialChars2-stdout.txt
deleted file mode 100644
index ae1a0b1..0000000
--- a/Tests/RunCMake/add_test/NameContainsValidSpecialChars2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abc_\.\+-012 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsValidSpecialChars3-stdout.txt b/Tests/RunCMake/add_test/NameContainsValidSpecialChars3-stdout.txt
deleted file mode 100644
index ae1a0b1..0000000
--- a/Tests/RunCMake/add_test/NameContainsValidSpecialChars3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abc_\.\+-012 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameContainsValidSpecialChars4-stdout.txt b/Tests/RunCMake/add_test/NameContainsValidSpecialChars4-stdout.txt
deleted file mode 100644
index ae1a0b1..0000000
--- a/Tests/RunCMake/add_test/NameContainsValidSpecialChars4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abc_\.\+-012 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameIsAlphaNumeric1-stdout.txt b/Tests/RunCMake/add_test/NameIsAlphaNumeric1-stdout.txt
deleted file mode 100644
index ed939bf..0000000
--- a/Tests/RunCMake/add_test/NameIsAlphaNumeric1-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abcdefghijklmnopqrstuvwxyz0123456789 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameIsAlphaNumeric2-stdout.txt b/Tests/RunCMake/add_test/NameIsAlphaNumeric2-stdout.txt
deleted file mode 100644
index ed939bf..0000000
--- a/Tests/RunCMake/add_test/NameIsAlphaNumeric2-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abcdefghijklmnopqrstuvwxyz0123456789 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameIsAlphaNumeric3-stdout.txt b/Tests/RunCMake/add_test/NameIsAlphaNumeric3-stdout.txt
deleted file mode 100644
index ed939bf..0000000
--- a/Tests/RunCMake/add_test/NameIsAlphaNumeric3-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abcdefghijklmnopqrstuvwxyz0123456789 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/NameIsAlphaNumeric4-stdout.txt b/Tests/RunCMake/add_test/NameIsAlphaNumeric4-stdout.txt
deleted file mode 100644
index ed939bf..0000000
--- a/Tests/RunCMake/add_test/NameIsAlphaNumeric4-stdout.txt
+++ /dev/null
@@ -1 +0,0 @@
-Test #[0-9]+: abcdefghijklmnopqrstuvwxyz0123456789 \.+[ ]*Passed
diff --git a/Tests/RunCMake/add_test/RunCMakeTest.cmake b/Tests/RunCMake/add_test/RunCMakeTest.cmake
deleted file mode 100644
index 6e9edda..0000000
--- a/Tests/RunCMake/add_test/RunCMakeTest.cmake
+++ /dev/null
@@ -1,263 +0,0 @@
-include(RunCTest)
-
-set(ENV{CTEST_OUTPUT_ON_FAILURE} 1)
-
-function(run_NameIsAlphaNumeric1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ abcdefghijklmnopqrstuvwxyz0123456789 ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ abcdefghijklmnopqrstuvwxyz0123456789 ]==])
-  run_ctest(NameIsAlphaNumeric1)
-endfunction()
-run_NameIsAlphaNumeric1_test()
-
-function(run_NameIsAlphaNumeric2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["abcdefghijklmnopqrstuvwxyz0123456789"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["abcdefghijklmnopqrstuvwxyz0123456789"]==])
-  run_ctest(NameIsAlphaNumeric2)
-endfunction()
-run_NameIsAlphaNumeric2_test()
-
-function(run_NameIsAlphaNumeric3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["abcdefghijklmnopqrstuvwxyz0123456789"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ abcdefghijklmnopqrstuvwxyz0123456789 ]==])
-  run_ctest(NameIsAlphaNumeric3)
-endfunction()
-run_NameIsAlphaNumeric3_test()
-
-function(run_NameIsAlphaNumeric4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ abcdefghijklmnopqrstuvwxyz0123456789 ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["abcdefghijklmnopqrstuvwxyz0123456789"]==])
-  run_ctest(NameIsAlphaNumeric4)
-endfunction()
-run_NameIsAlphaNumeric4_test()
-
-
-function(run_NameContainsValidSpecialChars1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ abc_.+-012 ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ abc_.+-012 ]==])
-  run_ctest(NameContainsValidSpecialChars1)
-endfunction()
-run_NameContainsValidSpecialChars1_test()
-
-function(run_NameContainsValidSpecialChars2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["abc_.+-012"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["abc_.+-012"]==])
-  run_ctest(NameContainsValidSpecialChars2)
-endfunction()
-run_NameContainsValidSpecialChars2_test()
-
-function(run_NameContainsValidSpecialChars3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["abc_.+-012"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ abc_.+-012 ]==])
-  run_ctest(NameContainsValidSpecialChars3)
-endfunction()
-run_NameContainsValidSpecialChars3_test()
-
-function(run_NameContainsValidSpecialChars4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ abc_.+-012 ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["abc_.+-012"]==])
-  run_ctest(NameContainsValidSpecialChars4)
-endfunction()
-run_NameContainsValidSpecialChars4_test()
-
-
-function(run_NameContainsOtherSpecialChars1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ !§$%&/ü:*😤~ ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ !§$%&/ü:*😤~ ]==])
-  run_ctest(NameContainsOtherSpecialChars1)
-endfunction()
-run_NameContainsOtherSpecialChars1_test()
-
-function(run_NameContainsOtherSpecialChars2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["!§$%&/ü:*😤~"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["!§$%&/ü:*😤~"]==])
-  run_ctest(NameContainsOtherSpecialChars2)
-endfunction()
-run_NameContainsOtherSpecialChars2_test()
-
-function(run_NameContainsOtherSpecialChars3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["!§$%&/ü:*😤~"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ !§$%&/ü:*😤~ ]==])
-  run_ctest(NameContainsOtherSpecialChars3)
-endfunction()
-run_NameContainsOtherSpecialChars3_test()
-
-function(run_NameContainsOtherSpecialChars4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ !§$%&/ü:*😤~ ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["!§$%&/ü:*😤~"]==])
-  run_ctest(NameContainsOtherSpecialChars4)
-endfunction()
-run_NameContainsOtherSpecialChars4_test()
-
-
-function(run_NameContainsEscapedSpecialChars1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ \(\)\ \# ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ \(\)\ \# ]==])
-  run_ctest(NameContainsEscapedSpecialChars1)
-endfunction()
-run_NameContainsEscapedSpecialChars1_test()
-
-function(run_NameContainsEscapedSpecialChars2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["\(\)\ \#"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["\(\)\ \#"]==])
-  run_ctest(NameContainsEscapedSpecialChars2)
-endfunction()
-run_NameContainsEscapedSpecialChars2_test()
-
-function(run_NameContainsEscapedSpecialChars3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["\(\)\ \#"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ \(\)\ \# ]==])
-  run_ctest(NameContainsEscapedSpecialChars3)
-endfunction()
-run_NameContainsEscapedSpecialChars3_test()
-
-function(run_NameContainsEscapedSpecialChars4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ \(\)\ \# ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["\(\)\ \#"]==])
-  run_ctest(NameContainsEscapedSpecialChars4)
-endfunction()
-run_NameContainsEscapedSpecialChars4_test()
-
-
-function(run_NameContainsGeneratorExpressionSyntax1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ $<BOOL:0> ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ $<BOOL:0> ]==])
-  run_ctest(NameContainsGeneratorExpressionSyntax1)
-endfunction()
-run_NameContainsGeneratorExpressionSyntax1_test()
-
-function(run_NameContainsGeneratorExpressionSyntax2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["$<BOOL:0>"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["$<BOOL:0>"]==])
-  run_ctest(NameContainsGeneratorExpressionSyntax2)
-endfunction()
-run_NameContainsGeneratorExpressionSyntax2_test()
-
-function(run_NameContainsGeneratorExpressionSyntax3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["$<BOOL:0>"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ $<BOOL:0> ]==])
-  run_ctest(NameContainsGeneratorExpressionSyntax3)
-endfunction()
-run_NameContainsGeneratorExpressionSyntax3_test()
-
-function(run_NameContainsGeneratorExpressionSyntax4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ $<BOOL:0> ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["$<BOOL:0>"]==])
-  run_ctest(NameContainsGeneratorExpressionSyntax4)
-endfunction()
-run_NameContainsGeneratorExpressionSyntax4_test()
-
-
-function(run_NameContainsSpaces1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["PrefixTest SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["PrefixTest SuffixTest"]==])
-  run_ctest(NameContainsSpaces1)
-endfunction()
-run_NameContainsSpaces1_test()
-
-function(run_NameContainsSpaces2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ PrefixTest SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ PrefixTest SuffixTest ]==])
-  run_ctest(NameContainsSpaces2)
-endfunction()
-run_NameContainsSpaces2_test()
-
-function(run_NameContainsSpaces3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["PrefixTest SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ PrefixTest SuffixTest ]==])
-  run_ctest(NameContainsSpaces3)
-endfunction()
-run_NameContainsSpaces3_test()
-
-function(run_NameContainsSpaces4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ PrefixTest SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["PrefixTest SuffixTest"]==])
-  run_ctest(NameContainsSpaces4)
-endfunction()
-run_NameContainsSpaces4_test()
-
-
-function(run_NameContainsSemicolon1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["PrefixTest;SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["PrefixTest;SuffixTest"]==])
-  run_ctest(NameContainsSemicolon1)
-endfunction()
-run_NameContainsSemicolon1_test()
-
-function(run_NameContainsSemicolon2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ PrefixTest;SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ PrefixTest;SuffixTest ]==])
-  run_ctest(NameContainsSemicolon2)
-endfunction()
-run_NameContainsSemicolon2_test()
-
-function(run_NameContainsSemicolon3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["PrefixTest;SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ PrefixTest;SuffixTest ]==])
-  run_ctest(NameContainsSemicolon3)
-endfunction()
-run_NameContainsSemicolon3_test()
-
-function(run_NameContainsSemicolon4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ PrefixTest;SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["PrefixTest;SuffixTest"]==])
-  run_ctest(NameContainsSemicolon4)
-endfunction()
-run_NameContainsSemicolon4_test()
-
-
-function(run_NameContainsEscapedQuote1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["EscapedQuote\"\"SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["EscapedQuote\"\"SuffixTest"]==])
-  run_ctest(NameContainsEscapedQuote1)
-endfunction()
-run_NameContainsEscapedQuote1_test()
-
-function(run_NameContainsEscapedQuote2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ EscapedQuote\"\"SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ EscapedQuote\"\"SuffixTest ]==])
-  run_ctest(NameContainsEscapedQuote2)
-endfunction()
-run_NameContainsEscapedQuote2_test()
-
-function(run_NameContainsEscapedQuote3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["EscapedQuote\"\"SuffixTest"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ EscapedQuote\"\"SuffixTest ]==])
-  run_ctest(NameContainsEscapedQuote3)
-endfunction()
-run_NameContainsEscapedQuote3_test()
-
-function(run_NameContainsEscapedQuote4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ EscapedQuote\"\"SuffixTest ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["EscapedQuote\"\"SuffixTest"]==])
-  run_ctest(NameContainsEscapedQuote4)
-endfunction()
-run_NameContainsEscapedQuote4_test()
-
-
-function(run_NameContainsBracketArgument1_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["[=[BracketArgument;SuffixTest]=]"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["[=[BracketArgument;SuffixTest]=]"]==])
-  run_ctest(NameContainsBracketArgument1)
-endfunction()
-run_NameContainsBracketArgument1_test()
-
-function(run_NameContainsBracketArgument2_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ [=[BracketArgument;SuffixTest]=] ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ [=[BracketArgument;SuffixTest]=] ]==])
-  run_ctest(NameContainsBracketArgument2)
-endfunction()
-run_NameContainsBracketArgument2_test()
-
-function(run_NameContainsBracketArgument3_test)
-  set(CASE_CMAKELISTS_NAME_1 [==["[=[BracketArgument;SuffixTest]=]"]==])
-  set(CASE_CMAKELISTS_NAME_2 [==[ [=[BracketArgument;SuffixTest]=] ]==])
-  run_ctest(NameContainsBracketArgument3)
-endfunction()
-run_NameContainsBracketArgument3_test()
-
-function(run_NameContainsBracketArgument4_test)
-  set(CASE_CMAKELISTS_NAME_1 [==[ [=[BracketArgument;SuffixTest]=] ]==])
-  set(CASE_CMAKELISTS_NAME_2 [==["[=[BracketArgument;SuffixTest]=]"]==])
-  run_ctest(NameContainsBracketArgument4)
-endfunction()
-run_NameContainsBracketArgument4_test()
diff --git a/Tests/RunCMake/add_test/test.cmake.in b/Tests/RunCMake/add_test/test.cmake.in
deleted file mode 100644
index 9821c1c..0000000
--- a/Tests/RunCMake/add_test/test.cmake.in
+++ /dev/null
@@ -1,16 +0,0 @@
-cmake_minimum_required(VERSION 3.17)
-
-set(CTEST_SITE                          "test-site")
-set(CTEST_BUILD_NAME                    "test-build-name")
-set(CTEST_SOURCE_DIRECTORY              "@RunCMake_BINARY_DIR@/@CASE_NAME@")
-set(CTEST_BINARY_DIRECTORY              "@RunCMake_BINARY_DIR@/@CASE_NAME@-build")
-set(CTEST_CMAKE_GENERATOR               "@RunCMake_GENERATOR@")
-set(CTEST_CMAKE_GENERATOR_PLATFORM      "@RunCMake_GENERATOR_PLATFORM@")
-set(CTEST_CMAKE_GENERATOR_TOOLSET       "@RunCMake_GENERATOR_TOOLSET@")
-set(CTEST_BUILD_CONFIGURATION           "$ENV{CMAKE_CONFIG_TYPE}")
-
-set(ctest_test_args "@CASE_CTEST_TEST_ARGS@")
-ctest_start(Experimental)
-ctest_configure()
-#ctest_build()
-ctest_test(${ctest_test_args})
diff --git a/Tests/SetLang/CMakeLists.txt b/Tests/SetLang/CMakeLists.txt
index af90f11..616421e 100644
--- a/Tests/SetLang/CMakeLists.txt
+++ b/Tests/SetLang/CMakeLists.txt
@@ -9,6 +9,13 @@
 target_link_libraries(SetLang foo)
 set_target_properties(SetLang PROPERTIES LINKER_LANGUAGE CXX)
 
+# VS generators historically tolerated target-wide -TP flags added
+# by project code, so cover that case to preserve the behavior.
+if(CMAKE_GENERATOR MATCHES "^Visual Studio" AND "x${CMAKE_C_COMPILER_ID}" STREQUAL "xMSVC")
+  add_library(stay stay_c.c stay_cxx.cxx)
+  set_property(TARGET stay PROPERTY COMPILE_OPTIONS "-TP")
+endif()
+
 if((CMAKE_C_COMPILER_ID MATCHES "(GNU|Clang|MSVC|Borland|Embarcadero|Intel|TI|XL)"))
   add_library(zoom zoom.zzz)
   set_source_files_properties(zoom.zzz PROPERTIES LANGUAGE CXX)
diff --git a/Tests/SetLang/stay_c.c b/Tests/SetLang/stay_c.c
new file mode 100644
index 0000000..70755f3
--- /dev/null
+++ b/Tests/SetLang/stay_c.c
@@ -0,0 +1,8 @@
+#ifdef __cplusplus
+#  error C source incorrectly compiled as C++
+#endif
+
+int stay_c(void)
+{
+  return 0;
+}
diff --git a/Tests/SetLang/stay_cxx.cxx b/Tests/SetLang/stay_cxx.cxx
new file mode 100644
index 0000000..e035260
--- /dev/null
+++ b/Tests/SetLang/stay_cxx.cxx
@@ -0,0 +1,8 @@
+#ifndef __cplusplus
+#  error C++ source incorrectly compiled as C
+#endif
+
+int stay_cxx()
+{
+  return 0;
+}
diff --git a/Utilities/std/cm/bits/fs_path.cxx b/Utilities/std/cm/bits/fs_path.cxx
index b8c5631..8089998 100644
--- a/Utilities/std/cm/bits/fs_path.cxx
+++ b/Utilities/std/cm/bits/fs_path.cxx
@@ -331,7 +331,7 @@
     while (ptr != end &&
            (*ptr == '/'
 #  if defined(_WIN32)
-            || *ptr == ' \\'
+            || *ptr == '\\'
 #  endif
             )) {
       ptr += step;
diff --git a/bootstrap b/bootstrap
index 0134e0c..2ef0fbb 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1188,7 +1188,7 @@
 }
 #endif
 
-#if (__cplusplus >= 201703L || defined(__INTEL_COMPILER) && defined(__cpp_if_constexpr))
+#if (__cplusplus >= 201703L || defined(__INTEL_COMPILER) && defined(__cpp_deduction_guides))
 #include <optional>
 template <typename T,
           typename std::invoke_result<decltype(&T::get), T>::type = nullptr>