cmLocalGenerator: Add ComputeObjectFilenames interface.

Implement it in the local generators and use it in the global
generators.

Source/cmGlobalNinjaGenerator.cxx

@@ -19,6 +19,7 @@
 #include "cmVersion.h"
 
 #include <algorithm>
+#include <assert.h>
 
 const char* cmGlobalNinjaGenerator::NINJA_BUILD_FILE = "build.ninja";
 const char* cmGlobalNinjaGenerator::NINJA_RULES_FILE = "rules.ninja";
@@ -636,15 +637,21 @@ void cmGlobalNinjaGenerator::ComputeTargetObjects(cmGeneratorTarget* gt) const
 {
   std::vector<cmSourceFile const*> objectSources;
   gt->GetObjectSources(objectSources);
-  // Compute the name of each object file.
-  for(std::vector<cmSourceFile const*>::iterator
-        si = objectSources.begin();
-      si != objectSources.end(); ++si)
+
+  std::map<cmSourceFile const*, std::string> mapping;
+  for(std::vector<cmSourceFile const*>::const_iterator it
+      = objectSources.begin(); it != objectSources.end(); ++it)
     {
-    cmSourceFile const* sf = *si;
-    std::string objectName = gt->LocalGenerator
-      ->GetObjectFileNameWithoutTarget(*sf, gt->ObjectDirectory);
-    gt->AddObject(sf, objectName);
+    mapping[*it];
+    }
+
+  gt->LocalGenerator->ComputeObjectFilenames(mapping, gt);
+
+  for(std::map<cmSourceFile const*, std::string>::const_iterator it
+      = mapping.begin(); it != mapping.end(); ++it)
+    {
+    assert(!it->second.empty());
+    gt->AddObject(it->first, it->second);
     }
 }
 

Source/cmGlobalUnixMakefileGenerator3.cxx

@@ -110,15 +110,20 @@ cmGlobalUnixMakefileGenerator3
 {
   std::vector<cmSourceFile const*> objectSources;
   gt->GetObjectSources(objectSources);
-  // Compute the name of each object file.
-  for(std::vector<cmSourceFile const*>::iterator
-        si = objectSources.begin();
-      si != objectSources.end(); ++si)
+
+  std::map<cmSourceFile const*, std::string> mapping;
+  for(std::vector<cmSourceFile const*>::const_iterator it
+      = objectSources.begin(); it != objectSources.end(); ++it)
     {
-    cmSourceFile const* sf = *si;
-    std::string objectName = gt->LocalGenerator
-      ->GetObjectFileNameWithoutTarget(*sf, gt->ObjectDirectory);
-    gt->AddObject(sf, objectName);
+    mapping[*it];
+    }
+
+  gt->LocalGenerator->ComputeObjectFilenames(mapping, gt);
+
+  for(std::map<cmSourceFile const*, std::string>::const_iterator it
+      = mapping.begin(); it != mapping.end(); ++it)
+    {
+    gt->AddObject(it->first, it->second);
     }
 }
 

Source/cmGlobalVisualStudioGenerator.cxx

@@ -122,42 +122,22 @@ void
 cmGlobalVisualStudioGenerator
 ::ComputeTargetObjects(cmGeneratorTarget* gt) const
 {
-  cmLocalVisualStudioGenerator* lg =
-    static_cast<cmLocalVisualStudioGenerator*>(gt->LocalGenerator);
-  std::string dir_max = lg->ComputeLongestObjectDirectory(*gt->Target);
-
-  // Count the number of object files with each name.  Note that
-  // windows file names are not case sensitive.
-  std::map<std::string, int> counts;
   std::vector<cmSourceFile const*> objectSources;
   gt->GetObjectSources(objectSources);
-  for(std::vector<cmSourceFile const*>::const_iterator
-        si = objectSources.begin();
-      si != objectSources.end(); ++si)
+
+  std::map<cmSourceFile const*, std::string> mapping;
+  for(std::vector<cmSourceFile const*>::const_iterator it
+      = objectSources.begin(); it != objectSources.end(); ++it)
     {
-    cmSourceFile const* sf = *si;
-    std::string objectNameLower = cmSystemTools::LowerCase(
-      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath()));
-    objectNameLower += ".obj";
-    counts[objectNameLower] += 1;
+    mapping[*it];
     }
 
-  // For all source files producing duplicate names we need unique
-  // object name computation.
-  for(std::vector<cmSourceFile const*>::const_iterator
-        si = objectSources.begin();
-      si != objectSources.end(); ++si)
+  gt->LocalGenerator->ComputeObjectFilenames(mapping, gt);
+
+  for(std::map<cmSourceFile const*, std::string>::const_iterator it
+      = mapping.begin(); it != mapping.end(); ++it)
     {
-    cmSourceFile const* sf = *si;
-    std::string objectName =
-      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
-    objectName += ".obj";
-    if(counts[cmSystemTools::LowerCase(objectName)] > 1)
-      {
-      gt->AddExplicitObjectName(sf);
-      objectName = lg->GetObjectFileNameWithoutTarget(*sf, dir_max);
-      }
-    gt->AddObject(sf, objectName);
+    gt->AddObject(it->first, it->second);
     }
 }
 

Source/cmGlobalXCodeGenerator.cxx

@@ -3939,30 +3939,22 @@ void
 cmGlobalXCodeGenerator
 ::ComputeTargetObjects(cmGeneratorTarget* gt) const
 {
-  // Count the number of object files with each name. Warn about duplicate
-  // names since Xcode names them uniquely automatically with a numeric suffix
-  // to avoid exact duplicate file names. Note that Mac file names are not
-  // typically case sensitive, hence the LowerCase.
-  std::map<std::string, int> counts;
   std::vector<cmSourceFile const*> objectSources;
   gt->GetObjectSources(objectSources);
-  for(std::vector<cmSourceFile const*>::const_iterator
-      si = objectSources.begin();
-      si != objectSources.end(); ++si)
+
+  std::map<cmSourceFile const*, std::string> mapping;
+  for(std::vector<cmSourceFile const*>::const_iterator it
+      = objectSources.begin(); it != objectSources.end(); ++it)
     {
-    cmSourceFile const* sf = *si;
-    std::string objectName =
-      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
-    objectName += ".o";
+    mapping[*it];
+    }
 
-    std::string objectNameLower = cmSystemTools::LowerCase(objectName);
-    counts[objectNameLower] += 1;
-    if (2 == counts[objectNameLower])
-      {
-      // TODO: emit warning about duplicate name?
-      }
+  gt->LocalGenerator->ComputeObjectFilenames(mapping, gt);
 
-    gt->AddObject(sf, objectName);
+  for(std::map<cmSourceFile const*, std::string>::const_iterator it
+      = mapping.begin(); it != mapping.end(); ++it)
+    {
+    gt->AddObject(it->first, it->second);
     }
 }
 

Source/cmLocalGenerator.cxx

@@ -3080,6 +3080,14 @@ cmLocalGenerator
   return it->second;
 }
 
+//----------------------------------------------------------------------------
+void cmLocalGenerator::ComputeObjectFilenames(
+                            std::map<cmSourceFile const*, std::string>&,
+                            cmGeneratorTarget const*)
+{
+
+}
+
 //----------------------------------------------------------------------------
 std::string
 cmLocalGenerator

Source/cmLocalGenerator.h

@@ -372,6 +372,10 @@ public:
                       std::string& linkPath,
                       cmGeneratorTarget* target);
 
+  virtual void ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt = 0);
+
 protected:
   ///! put all the libraries for a target on into the given stream
   virtual void OutputLinkLibraries(std::string& linkLibraries,

Source/cmLocalNinjaGenerator.cxx

@@ -267,6 +267,20 @@ void cmLocalNinjaGenerator::SetConfigName()
     }
 }
 
+//----------------------------------------------------------------------------
+void cmLocalNinjaGenerator::ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt)
+{
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    si->second = this->GetObjectFileNameWithoutTarget(*sf,
+                                                      gt->ObjectDirectory);
+    }
+}
+
 void cmLocalNinjaGenerator::WriteProcessedMakefile(std::ostream& os)
 {
   cmGlobalNinjaGenerator::WriteDivider(os);

Source/cmLocalNinjaGenerator.h

@@ -101,6 +101,10 @@ public:
   virtual std::string ConvertToLinkReference(std::string const& lib,
                                              OutputFormat format = SHELL);
 
+  virtual void ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt = 0);
+
 
 protected:
   virtual std::string ConvertToIncludeReference(std::string const& path,

Source/cmLocalUnixMakefileGenerator3.cxx

@@ -171,6 +171,20 @@ void cmLocalUnixMakefileGenerator3::Generate()
   this->WriteDirectoryInformationFile();
 }
 
+//----------------------------------------------------------------------------
+void cmLocalUnixMakefileGenerator3::ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt)
+{
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    si->second = this->GetObjectFileNameWithoutTarget(*sf,
+                                                      gt->ObjectDirectory);
+    }
+}
+
 //----------------------------------------------------------------------------
 void cmLocalUnixMakefileGenerator3::
 GetLocalObjectFiles(std::map<std::string, LocalObjectInfo> &localObjectFiles)

Source/cmLocalUnixMakefileGenerator3.h

@@ -313,6 +313,10 @@ private:
   std::string MakeLauncher(cmCustomCommandGenerator const& ccg,
                            cmTarget* target, RelativeRoot relative);
 
+  virtual void ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt = 0);
+
   friend class cmMakefileTargetGenerator;
   friend class cmMakefileExecutableTargetGenerator;
   friend class cmMakefileLibraryTargetGenerator;

Source/cmLocalVisualStudioGenerator.cxx

@@ -30,6 +30,46 @@ cmLocalVisualStudioGenerator::~cmLocalVisualStudioGenerator()
 {
 }
 
+//----------------------------------------------------------------------------
+void cmLocalVisualStudioGenerator::ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt)
+{
+  std::string dir_max = this->ComputeLongestObjectDirectory(*gt->Target);
+
+  // Count the number of object files with each name.  Note that
+  // windows file names are not case sensitive.
+  std::map<std::string, int> counts;
+
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    std::string objectNameLower = cmSystemTools::LowerCase(
+      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath()));
+    objectNameLower += ".obj";
+    counts[objectNameLower] += 1;
+    }
+
+  // For all source files producing duplicate names we need unique
+  // object name computation.
+
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    std::string objectName =
+      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
+    objectName += ".obj";
+    if(counts[cmSystemTools::LowerCase(objectName)] > 1)
+      {
+      const_cast<cmGeneratorTarget*>(gt)->AddExplicitObjectName(sf);
+      objectName = this->GetObjectFileNameWithoutTarget(*sf, dir_max);
+      }
+    si->second = objectName;
+    }
+}
+
 //----------------------------------------------------------------------------
 cmsys::auto_ptr<cmCustomCommand>
 cmLocalVisualStudioGenerator::MaybeCreateImplibDir(cmTarget& target,

Source/cmLocalVisualStudioGenerator.h

@@ -61,6 +61,10 @@ public:
 
   virtual void AddCMakeListsRules() = 0;
 
+  virtual void ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* = 0);
+
 protected:
   virtual const char* ReportErrorLabel() const;
   virtual bool CustomCommandUseLocal() const { return false; }

Source/cmLocalXCodeGenerator.cxx

@@ -71,3 +71,31 @@ void cmLocalXCodeGenerator::GenerateInstallRules()
     t->HasMacOSXRpathInstallNameDir("");
     }
 }
+
+//----------------------------------------------------------------------------
+void cmLocalXCodeGenerator::ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const*)
+{
+  // Count the number of object files with each name. Warn about duplicate
+  // names since Xcode names them uniquely automatically with a numeric suffix
+  // to avoid exact duplicate file names. Note that Mac file names are not
+  // typically case sensitive, hence the LowerCase.
+  std::map<std::string, int> counts;
+  for(std::map<cmSourceFile const*, std::string>::iterator
+      si = mapping.begin(); si != mapping.end(); ++si)
+    {
+    cmSourceFile const* sf = si->first;
+    std::string objectName =
+      cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
+    objectName += ".o";
+
+    std::string objectNameLower = cmSystemTools::LowerCase(objectName);
+    counts[objectNameLower] += 1;
+    if (2 == counts[objectNameLower])
+      {
+      // TODO: emit warning about duplicate name?
+      }
+    si->second = objectName;
+    }
+}

Source/cmLocalXCodeGenerator.h

@@ -32,6 +32,9 @@ public:
                                 const std::string& rawFlag);
   virtual void Generate();
   virtual void GenerateInstallRules();
+  virtual void ComputeObjectFilenames(
+                        std::map<cmSourceFile const*, std::string>& mapping,
+                        cmGeneratorTarget const* gt = 0);
 private:
 
 };