From 18726ad634d0f182940d45e9f569000cebcc4377 Mon Sep 17 00:00:00 2001
From: Vitaly Stakhovsky <vvs31415@gitlab.org>
Date: Sat, 11 Jul 2020 14:00:00 -0400
Subject: GetFeature(): return cmProp

---
 Source/cmCommonTargetGenerator.cxx        |  2 +-
 Source/cmGeneratorTarget.cxx              | 12 ++++++------
 Source/cmGeneratorTarget.h                |  4 ++--
 Source/cmGlobalVisualStudio7Generator.cxx |  5 ++---
 Source/cmLocalGenerator.cxx               |  6 +++---
 Source/cmLocalGenerator.h                 |  4 ++--
 6 files changed, 16 insertions(+), 17 deletions(-)

diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index 051eff6..8aee27c 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -41,7 +41,7 @@ std::vector<std::string> const& cmCommonTargetGenerator::GetConfigNames() const
 const char* cmCommonTargetGenerator::GetFeature(const std::string& feature,
                                                 const std::string& config)
 {
-  return this->GeneratorTarget->GetFeature(feature, config);
+  return this->GeneratorTarget->GetFeature(feature, config)->c_str();
 }
 
 void cmCommonTargetGenerator::AddModuleDefinitionFlag(
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index ccd8e7e..a14c864 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -815,18 +815,18 @@ void cmGeneratorTarget::ComputeObjectMapping()
   }
 }
 
-const char* cmGeneratorTarget::GetFeature(const std::string& feature,
-                                          const std::string& config) const
+cmProp cmGeneratorTarget::GetFeature(const std::string& feature,
+                                     const std::string& config) const
 {
   if (!config.empty()) {
     std::string featureConfig =
       cmStrCat(feature, '_', cmSystemTools::UpperCase(config));
     if (cmProp value = this->GetProperty(featureConfig)) {
-      return value->c_str();
+      return value;
     }
   }
   if (cmProp value = this->GetProperty(feature)) {
-    return value->c_str();
+    return value;
   }
   return this->LocalGenerator->GetFeature(feature, config);
 }
@@ -853,8 +853,8 @@ const char* cmGeneratorTarget::GetLinkPIEProperty(
 bool cmGeneratorTarget::IsIPOEnabled(std::string const& lang,
                                      std::string const& config) const
 {
-  const char* feature = "INTERPROCEDURAL_OPTIMIZATION";
-  const bool result = cmIsOn(this->GetFeature(feature, config));
+  cmProp feature = this->GetFeature("INTERPROCEDURAL_OPTIMIZATION", config);
+  const bool result = feature && cmIsOn(*feature);
 
   if (!result) {
     // 'INTERPROCEDURAL_OPTIMIZATION' is off, no need to check policies
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 07f071b..08aa015 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -175,8 +175,8 @@ public:
 
   void ComputeObjectMapping();
 
-  const char* GetFeature(const std::string& feature,
-                         const std::string& config) const;
+  cmProp GetFeature(const std::string& feature,
+                    const std::string& config) const;
 
   const char* GetLinkPIEProperty(const std::string& config) const;
 
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index 9f798e6..1d3bf20 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -694,9 +694,8 @@ std::set<std::string> cmGlobalVisualStudio7Generator::IsPartOfDefaultBuild(
   }
   // inspect EXCLUDE_FROM_DEFAULT_BUILD[_<CONFIG>] properties
   for (std::string const& i : configs) {
-    const char* propertyValue =
-      target->GetFeature("EXCLUDE_FROM_DEFAULT_BUILD", i);
-    if (cmIsOff(propertyValue)) {
+    cmProp propertyValue = target->GetFeature("EXCLUDE_FROM_DEFAULT_BUILD", i);
+    if (!propertyValue || cmIsOff(*propertyValue)) {
       activeConfigs.insert(i);
     }
   }
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 489065b..e7f2e64 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -3253,8 +3253,8 @@ void cmLocalGenerator::AppendFeatureOptions(std::string& flags,
   }
 }
 
-const char* cmLocalGenerator::GetFeature(const std::string& feature,
-                                         const std::string& config)
+cmProp cmLocalGenerator::GetFeature(const std::string& feature,
+                                    const std::string& config)
 {
   std::string featureName = feature;
   // TODO: Define accumulation policy for features (prepend, append,
@@ -3266,7 +3266,7 @@ const char* cmLocalGenerator::GetFeature(const std::string& feature,
   cmStateSnapshot snp = this->StateSnapshot;
   while (snp.IsValid()) {
     if (cmProp value = snp.GetDirectory().GetProperty(featureName)) {
-      return value->c_str();
+      return value;
     }
     snp = snp.GetBuildsystemDirectoryParent();
   }
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index f4781d6..0c51a65 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -20,6 +20,7 @@
 #include "cmMessageType.h"
 #include "cmOutputConverter.h"
 #include "cmPolicies.h"
+#include "cmProperty.h"
 #include "cmStateSnapshot.h"
 
 class cmComputeLinkInformation;
@@ -209,8 +210,7 @@ public:
   void AppendFeatureOptions(std::string& flags, const std::string& lang,
                             const char* feature);
 
-  const char* GetFeature(const std::string& feature,
-                         const std::string& config);
+  cmProp GetFeature(const std::string& feature, const std::string& config);
 
   /** \brief Get absolute path to dependency \a name
    *
-- 
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