Use mapped config properties to evaluate $<CONFIG>

Source/cmGeneratorExpressionEvaluator.cxx

@@ -265,8 +265,24 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
       return parameters.front().empty() ? "1" : "0";
       }
 
-    return cmsysString_strcasecmp(parameters.begin()->c_str(),
-                                  context->Config) == 0 ? "1" : "0";
+    if (cmsysString_strcasecmp(parameters.begin()->c_str(),
+                                  context->Config) == 0)
+      {
+      return "1";
+      }
+
+    if (context->CurrentTarget
+        && context->CurrentTarget->IsImported())
+      {
+      const char* loc = 0;
+      const char* imp = 0;
+      std::string suffix;
+      return context->CurrentTarget->GetMappedConfig(context->Config,
+                                                  &loc,
+                                                  &imp,
+                                                  suffix) ? "1" : "0";
+      }
+    return "0";
   }
 } configurationTestNode;
 

Source/cmTarget.cxx

@@ -4365,27 +4365,15 @@ cmTarget::GetImportInfo(const char* config)
   return &i->second;
 }
 
-//----------------------------------------------------------------------------
-void cmTarget::ComputeImportInfo(std::string const& desired_config,
-                                 ImportInfo& info)
+bool cmTarget::GetMappedConfig(std::string const& desired_config,
+                               const char** loc,
+                               const char** imp,
+                               std::string& suffix)
 {
-  // This method finds information about an imported target from its
-  // properties.  The "IMPORTED_" namespace is reserved for properties
-  // defined by the project exporting the target.
-
-  // Initialize members.
-  info.NoSOName = false;
-
   // Track the configuration-specific property suffix.
-  std::string suffix = "_";
+  suffix = "_";
   suffix += desired_config;
 
-  // On a DLL platform there may be only IMPORTED_IMPLIB for a shared
-  // library or an executable with exports.
-  bool allowImp = this->HasImportLibrary();
-
-  // Look for a mapping from the current project's configuration to
-  // the imported project's configuration.
   std::vector<std::string> mappedConfigs;
   {
   std::string mapProp = "MAP_IMPORTED_CONFIG_";
@@ -4396,26 +4384,29 @@ void cmTarget::ComputeImportInfo(std::string const& desired_config,
     }
   }
 
+  // If we needed to find one of the mapped configurations but did not
+  // On a DLL platform there may be only IMPORTED_IMPLIB for a shared
+  // library or an executable with exports.
+  bool allowImp = this->HasImportLibrary();
+
   // If a mapping was found, check its configurations.
-  const char* loc = 0;
-  const char* imp = 0;
   for(std::vector<std::string>::const_iterator mci = mappedConfigs.begin();
-      !loc && !imp && mci != mappedConfigs.end(); ++mci)
+      !*loc && !*imp && mci != mappedConfigs.end(); ++mci)
     {
     // Look for this configuration.
     std::string mcUpper = cmSystemTools::UpperCase(mci->c_str());
     std::string locProp = "IMPORTED_LOCATION_";
     locProp += mcUpper;
-    loc = this->GetProperty(locProp.c_str());
+    *loc = this->GetProperty(locProp.c_str());
     if(allowImp)
       {
       std::string impProp = "IMPORTED_IMPLIB_";
       impProp += mcUpper;
-      imp = this->GetProperty(impProp.c_str());
+      *imp = this->GetProperty(impProp.c_str());
       }
 
     // If it was found, use it for all properties below.
-    if(loc || imp)
+    if(*loc || *imp)
       {
       suffix = "_";
       suffix += mcUpper;
@@ -4425,45 +4416,45 @@ void cmTarget::ComputeImportInfo(std::string const& desired_config,
   // If we needed to find one of the mapped configurations but did not
   // then the target is not found.  The project does not want any
   // other configuration.
-  if(!mappedConfigs.empty() && !loc && !imp)
+  if(!mappedConfigs.empty() && !*loc && !*imp)
     {
-    return;
+    return false;
     }
 
   // If we have not yet found it then there are no mapped
   // configurations.  Look for an exact-match.
-  if(!loc && !imp)
+  if(!*loc && !*imp)
     {
     std::string locProp = "IMPORTED_LOCATION";
     locProp += suffix;
-    loc = this->GetProperty(locProp.c_str());
+    *loc = this->GetProperty(locProp.c_str());
     if(allowImp)
       {
       std::string impProp = "IMPORTED_IMPLIB";
       impProp += suffix;
-      imp = this->GetProperty(impProp.c_str());
+      *imp = this->GetProperty(impProp.c_str());
       }
     }
 
   // If we have not yet found it then there are no mapped
   // configurations and no exact match.
-  if(!loc && !imp)
+  if(!*loc && !*imp)
     {
     // The suffix computed above is not useful.
     suffix = "";
 
     // Look for a configuration-less location.  This may be set by
     // manually-written code.
-    loc = this->GetProperty("IMPORTED_LOCATION");
+    *loc = this->GetProperty("IMPORTED_LOCATION");
     if(allowImp)
       {
-      imp = this->GetProperty("IMPORTED_IMPLIB");
+      *imp = this->GetProperty("IMPORTED_IMPLIB");
       }
     }
 
   // If we have not yet found it then the project is willing to try
   // any available configuration.
-  if(!loc && !imp)
+  if(!*loc && !*imp)
     {
     std::vector<std::string> availableConfigs;
     if(const char* iconfigs = this->GetProperty("IMPORTED_CONFIGURATIONS"))
@@ -4472,24 +4463,45 @@ void cmTarget::ComputeImportInfo(std::string const& desired_config,
       }
     for(std::vector<std::string>::const_iterator
           aci = availableConfigs.begin();
-        !loc && !imp && aci != availableConfigs.end(); ++aci)
+        !*loc && !*imp && aci != availableConfigs.end(); ++aci)
       {
       suffix = "_";
       suffix += cmSystemTools::UpperCase(*aci);
       std::string locProp = "IMPORTED_LOCATION";
       locProp += suffix;
-      loc = this->GetProperty(locProp.c_str());
+      *loc = this->GetProperty(locProp.c_str());
       if(allowImp)
         {
         std::string impProp = "IMPORTED_IMPLIB";
         impProp += suffix;
-        imp = this->GetProperty(impProp.c_str());
+        *imp = this->GetProperty(impProp.c_str());
         }
       }
     }
-
   // If we have not yet found it then the target is not available.
-  if(!loc && !imp)
+  if(!*loc && !*imp)
+    {
+    return false;
+    }
+
+  return true;
+}
+
+//----------------------------------------------------------------------------
+void cmTarget::ComputeImportInfo(std::string const& desired_config,
+                                 ImportInfo& info)
+{
+  // This method finds information about an imported target from its
+  // properties.  The "IMPORTED_" namespace is reserved for properties
+  // defined by the project exporting the target.
+
+  // Initialize members.
+  info.NoSOName = false;
+
+  const char* loc = 0;
+  const char* imp = 0;
+  std::string suffix;
+  if (!this->GetMappedConfig(desired_config, &loc, &imp, suffix))
     {
     return;
     }

Source/cmTarget.h

@@ -404,6 +404,11 @@ public:
   // Get the properties
   cmPropertyMap &GetProperties() { return this->Properties; };
 
+  bool GetMappedConfig(std::string const& desired_config,
+                       const char** loc,
+                       const char** imp,
+                       std::string& suffix);
+
   // Define the properties
   static void DefineProperties(cmake *cm);