Merge topic 'refactor-lang-flags'

707283981f VS: Use AddLanguageFlags to de-duplicate CMAKE_<LANG>_FLAGS* lookup
8ca1b26286 cmLocalGenerator: Factor IPO logic out of AddLanguageFlags

Acked-by: Kitware Robot <[email protected]>
Merge-request: !3177

Source/cmGlobalXCodeGenerator.cxx

@@ -1800,6 +1800,10 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
     this->CurrentLocalGenerator->AddLanguageFlags(flags, gtgt, lang,
                                                   configName);
 
+    if (gtgt->IsIPOEnabled(lang, configName)) {
+      this->CurrentLocalGenerator->AppendFeatureOptions(flags, lang, "IPO");
+    }
+
     // Add shared-library flags if needed.
     this->CurrentLocalGenerator->AddCMP0018Flags(flags, gtgt, lang,
                                                  configName);

Source/cmLocalGenerator.cxx

@@ -1258,6 +1258,10 @@ void cmLocalGenerator::GetTargetCompileFlags(cmGeneratorTarget* target,
   // Add language-specific flags.
   this->AddLanguageFlags(flags, target, lang, config);
 
+  if (target->IsIPOEnabled(lang, config)) {
+    this->AppendFeatureOptions(flags, lang, "IPO");
+  }
+
   this->AddArchitectureFlags(flags, target, lang, config);
 
   if (lang == "Fortran") {
@@ -1515,9 +1519,8 @@ void cmLocalGenerator::AddLanguageFlags(std::string& flags,
   flagsVar += "_FLAGS";
   this->AddConfigVariableFlags(flags, flagsVar, config);
 
-  if (target->IsIPOEnabled(lang, config)) {
-    this->AppendFeatureOptions(flags, lang, "IPO");
-  }
+  // Placeholder for possible future per-target flags.
+  static_cast<void>(target);
 }
 
 void cmLocalGenerator::AddLanguageFlagsForLinking(
@@ -1534,6 +1537,10 @@ void cmLocalGenerator::AddLanguageFlagsForLinking(
   }
 
   this->AddLanguageFlags(flags, target, lang, config);
+
+  if (target->IsIPOEnabled(lang, config)) {
+    this->AppendFeatureOptions(flags, lang, "IPO");
+  }
 }
 
 cmGeneratorTarget* cmLocalGenerator::FindGeneratorTargetToUse(

Source/cmLocalVisualStudio7Generator.cxx

@@ -662,14 +662,7 @@ void cmLocalVisualStudio7Generator::WriteConfiguration(
     langForClCompile = linkLanguage;
     if (langForClCompile == "C" || langForClCompile == "CXX" ||
         langForClCompile == "Fortran") {
-      std::string baseFlagVar = "CMAKE_";
-      baseFlagVar += langForClCompile;
-      baseFlagVar += "_FLAGS";
-      flags = this->Makefile->GetRequiredDefinition(baseFlagVar);
-      std::string flagVar =
-        baseFlagVar + std::string("_") + cmSystemTools::UpperCase(configName);
-      flags += " ";
-      flags += this->Makefile->GetRequiredDefinition(flagVar);
+      this->AddLanguageFlags(flags, target, langForClCompile, configName);
     }
     // set the correct language
     if (linkLanguage == "C") {

Source/cmVisualStudio10TargetGenerator.cxx

@@ -2540,14 +2540,8 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
   }
   this->LangForClCompile = langForClCompile;
   if (!langForClCompile.empty()) {
-    std::string baseFlagVar = "CMAKE_";
-    baseFlagVar += langForClCompile;
-    baseFlagVar += "_FLAGS";
-    flags = this->Makefile->GetRequiredDefinition(baseFlagVar);
-    std::string flagVar =
-      baseFlagVar + "_" + cmSystemTools::UpperCase(configName);
-    flags += " ";
-    flags += this->Makefile->GetRequiredDefinition(flagVar);
+    this->LocalGenerator->AddLanguageFlags(flags, this->GeneratorTarget,
+                                           langForClCompile, configName);
     this->LocalGenerator->AddCompileOptions(flags, this->GeneratorTarget,
                                             langForClCompile, configName);
   }