cmLocalVisualStudio6Generator.cxx 48.8 KB
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/*=========================================================================

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  Program:   CMake - Cross-Platform Makefile Generator
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  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

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  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "cmGlobalGenerator.h"
#include "cmLocalVisualStudio6Generator.h"
#include "cmMakefile.h"
#include "cmSystemTools.h"
#include "cmSourceFile.h"
#include "cmCacheManager.h"
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#include "cmake.h"
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#include <cmsys/RegularExpression.hxx>

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cmLocalVisualStudio6Generator::cmLocalVisualStudio6Generator()
{
}

cmLocalVisualStudio6Generator::~cmLocalVisualStudio6Generator()
{
}


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void cmLocalVisualStudio6Generator::Generate()
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{ 
  std::set<cmStdString> lang;
  lang.insert("C");
  lang.insert("CXX");
  this->CreateCustomTargetsAndCommands(lang);
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  this->OutputDSPFile();
}

void cmLocalVisualStudio6Generator::OutputDSPFile()
{ 
  // If not an in source build, then create the output directory
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  if(strcmp(this->Makefile->GetStartOutputDirectory(),
            this->Makefile->GetHomeDirectory()) != 0)
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    {
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    if(!cmSystemTools::MakeDirectory
       (this->Makefile->GetStartOutputDirectory()))
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      {
      cmSystemTools::Error("Error creating directory ",
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                           this->Makefile->GetStartOutputDirectory());
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      }
    }

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  // Setup /I and /LIBPATH options for the resulting DSP file.  VS 6
  // truncates long include paths so make it as short as possible if
  // the length threatents this problem.
  unsigned int maxIncludeLength = 3000;
  bool useShortPath = false;
  for(int j=0; j < 2; ++j)
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    {
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    std::vector<std::string> includes;
    this->GetIncludeDirectories(includes);
    std::vector<std::string>::iterator i;
    for(i = includes.begin(); i != includes.end(); ++i)
      {
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      std::string tmp = 
        this->ConvertToOptionallyRelativeOutputPath(i->c_str());
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      if(useShortPath)
        {
        cmSystemTools::GetShortPath(tmp.c_str(), tmp);
        }
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      this->IncludeOptions +=  " /I ";
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      // quote if not already quoted
      if (tmp[0] != '"')
        {
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        this->IncludeOptions += "\"";
        this->IncludeOptions += tmp;
        this->IncludeOptions += "\"";
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        }
      else
        {
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        this->IncludeOptions += tmp;
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        }
      }
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    if(j == 0 && this->IncludeOptions.size() > maxIncludeLength)
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      {
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      this->IncludeOptions = "";
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      useShortPath = true;
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      }
    else
      {
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      break;
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      }
    }
  
  // Create the DSP or set of DSP's for libraries and executables

  // clear project names
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  this->CreatedProjectNames.clear();
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  // Call TraceVSDependencies on all targets
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  cmTargets &tgts = this->Makefile->GetTargets(); 
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  for(cmTargets::iterator l = tgts.begin(); 
      l != tgts.end(); l++)
    {
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    // Add a rule to regenerate the build system when the target
    // specification source changes.
    const char* suppRegenRule =
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      this->Makefile->GetDefinition("CMAKE_SUPPRESS_REGENERATION");
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    if (!cmSystemTools::IsOn(suppRegenRule))
      {
      this->AddDSPBuildRule(l->second);
      }

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    // INCLUDE_EXTERNAL_MSPROJECT command only affects the workspace
    // so don't build a projectfile for it
    if ((l->second.GetType() != cmTarget::INSTALL_FILES)
        && (l->second.GetType() != cmTarget::INSTALL_PROGRAMS)
        && (strncmp(l->first.c_str(), "INCLUDE_EXTERNAL_MSPROJECT", 26) != 0))
      {
      cmTarget& target = l->second;
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      target.TraceVSDependencies(target.GetName(), this->Makefile);
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      }
    }
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  // build any targets
  for(cmTargets::iterator l = tgts.begin(); 
      l != tgts.end(); l++)
    {
    switch(l->second.GetType())
      {
      case cmTarget::STATIC_LIBRARY:
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        this->SetBuildType(STATIC_LIBRARY, l->first.c_str(), l->second);
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        break;
      case cmTarget::SHARED_LIBRARY:
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      case cmTarget::MODULE_LIBRARY:
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        this->SetBuildType(DLL, l->first.c_str(), l->second);
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        break;
      case cmTarget::EXECUTABLE:
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        this->SetBuildType(EXECUTABLE,l->first.c_str(), l->second);
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        break;
      case cmTarget::UTILITY:
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      case cmTarget::GLOBAL_TARGET:
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        this->SetBuildType(UTILITY, l->first.c_str(), l->second);
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        break;
      case cmTarget::INSTALL_FILES:
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        break;
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      case cmTarget::INSTALL_PROGRAMS:
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        break;
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      default:
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        cmSystemTools::Error("Bad target type", l->first.c_str());
        break;
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      }
    // INCLUDE_EXTERNAL_MSPROJECT command only affects the workspace
    // so don't build a projectfile for it
    if ((l->second.GetType() != cmTarget::INSTALL_FILES)
        && (l->second.GetType() != cmTarget::INSTALL_PROGRAMS)
        && (strncmp(l->first.c_str(), "INCLUDE_EXTERNAL_MSPROJECT", 26) != 0))
      {
      // check to see if the dsp is going into a sub-directory
      std::string::size_type pos = l->first.rfind('/');
      if(pos != std::string::npos)
        {
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        std::string dir = this->Makefile->GetStartOutputDirectory();
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        dir += "/";
        dir += l->first.substr(0, pos);
        if(!cmSystemTools::MakeDirectory(dir.c_str()))
          {
          cmSystemTools::Error("Error creating directory ", dir.c_str());
          }
        }
      this->CreateSingleDSP(l->first.c_str(),l->second);
      }
    }
}

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void cmLocalVisualStudio6Generator::CreateSingleDSP(const char *lname, 
                                                    cmTarget &target)
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{
  // add to the list of projects
  std::string pname = lname;
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  this->CreatedProjectNames.push_back(pname);
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  // create the dsp.cmake file
  std::string fname;
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  fname = this->Makefile->GetStartOutputDirectory();
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  fname += "/";
  fname += lname;
  fname += ".dsp";
  // save the name of the real dsp file
  std::string realDSP = fname;
  fname += ".cmake";
  std::ofstream fout(fname.c_str());
  if(!fout)
    {
    cmSystemTools::Error("Error Writing ", fname.c_str());
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    cmSystemTools::ReportLastSystemError("");
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    }
  this->WriteDSPFile(fout,lname,target);
  fout.close();
  // if the dsp file has changed, then write it.
  cmSystemTools::CopyFileIfDifferent(fname.c_str(), realDSP.c_str());
}


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void cmLocalVisualStudio6Generator::AddDSPBuildRule(cmTarget& tgt)
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{
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  std::string dspname = tgt.GetName();
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  dspname += ".dsp.cmake";
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  const char* dsprule = 
    this->Makefile->GetRequiredDefinition("CMAKE_COMMAND");
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  cmCustomCommandLine commandLine;
  commandLine.push_back(dsprule);
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  std::string makefileIn = this->Makefile->GetStartDirectory();
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  makefileIn += "/";
  makefileIn += "CMakeLists.txt";
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  std::string comment = "Building Custom Rule ";
  comment += makefileIn;
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  std::string args;
  args = "-H";
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  args += this->Convert(this->Makefile->GetHomeDirectory(),
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                        START_OUTPUT, UNCHANGED, true);
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  commandLine.push_back(args);
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  args = "-B";
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  args += 
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    this->Convert(this->Makefile->GetHomeOutputDirectory(), 
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                  START_OUTPUT, UNCHANGED, true);
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  commandLine.push_back(args);
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  std::string configFile = 
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    this->Makefile->GetRequiredDefinition("CMAKE_ROOT");
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  configFile += "/Templates/CMakeWindowsSystemConfig.cmake";
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  std::vector<std::string> listFiles = this->Makefile->GetListFiles();
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  bool found = false;
  for(std::vector<std::string>::iterator i = listFiles.begin();
      i != listFiles.end(); ++i)
    {
    if(*i == configFile)
      {
      found  = true;
      }
    }
  if(!found)
    {
    listFiles.push_back(configFile);
    }
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  cmCustomCommandLines commandLines;
  commandLines.push_back(commandLine);
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  const char* no_working_directory = 0;
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  this->Makefile->AddCustomCommandToOutput(dspname.c_str(), listFiles,
                                           makefileIn.c_str(), commandLines,
                                           comment.c_str(),
                                           no_working_directory, true);
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  if(cmSourceFile* file = this->Makefile->GetSource(makefileIn.c_str()))
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    {
    tgt.GetSourceFiles().push_back(file);
    }
  else
    {
    cmSystemTools::Error("Error adding rule for ", makefileIn.c_str());
    }
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}


void cmLocalVisualStudio6Generator::WriteDSPFile(std::ostream& fout, 
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                                                 const char *libName,
                                                 cmTarget &target)
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{
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  // For utility targets need custom command since pre- and post-
  // build does not do anything in Visual Studio 6.  In order for the
  // rules to run in the correct order as custom commands, we need
  // special care for dependencies.  The first rule must depend on all
  // the dependencies of all the rules.  The later rules must each
  // depend only on the previous rule.
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  if ((target.GetType() == cmTarget::UTILITY ||
      target.GetType() == cmTarget::GLOBAL_TARGET) &&
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      (!target.GetPreBuildCommands().empty() ||
       !target.GetPostBuildCommands().empty()))
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    {
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    // Accumulate the dependencies of all the commands.
    std::vector<std::string> depends;
    for (std::vector<cmCustomCommand>::const_iterator cr =
           target.GetPreBuildCommands().begin();
         cr != target.GetPreBuildCommands().end(); ++cr)
      {
      depends.insert(depends.end(),
                     cr->GetDepends().begin(), cr->GetDepends().end());
      }
    for (std::vector<cmCustomCommand>::const_iterator cr =
           target.GetPostBuildCommands().begin();
         cr != target.GetPostBuildCommands().end(); ++cr)
      {
      depends.insert(depends.end(),
                     cr->GetDepends().begin(), cr->GetDepends().end());
      }

    // Add the pre- and post-build commands in order.
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    int count = 1;
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    for (std::vector<cmCustomCommand>::const_iterator cr =
           target.GetPreBuildCommands().begin();
         cr != target.GetPreBuildCommands().end(); ++cr)
      {
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      this->AddUtilityCommandHack(target, count++, depends, *cr);
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      }
    for (std::vector<cmCustomCommand>::const_iterator cr =
           target.GetPostBuildCommands().begin();
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         cr != target.GetPostBuildCommands().end(); ++cr)
      {
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      this->AddUtilityCommandHack(target, count++, depends, *cr);
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      }
    }
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  // trace the visual studio dependencies
  std::string name = libName;
  name += ".dsp.cmake";
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  // We may be modifying the source groups temporarily, so make a copy.
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  std::vector<cmSourceGroup> sourceGroups = this->Makefile->GetSourceGroups();
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  // get the classes from the source lists then add them to the groups
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  std::vector<cmSourceFile*> & classes = target.GetSourceFiles();

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  // now all of the source files have been properly assigned to the target
  // now stick them into source groups using the reg expressions
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  for(std::vector<cmSourceFile*>::iterator i = classes.begin(); 
      i != classes.end(); i++)
    {
    // Add the file to the list of sources.
    std::string source = (*i)->GetFullPath();
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    cmSourceGroup& sourceGroup = 
      this->Makefile->FindSourceGroup(source.c_str(), sourceGroups);
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    sourceGroup.AssignSource(*i);
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    // while we are at it, if it is a .rule file then for visual studio 6 we
    // must generate it
    if ((*i)->GetSourceExtension() == "rule")
      {
      if(!cmSystemTools::FileExists(source.c_str()))
        {
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        cmSystemTools::ReplaceString(source, "$(IntDir)/", "");
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#if defined(_WIN32) || defined(__CYGWIN__)
        std::ofstream fout(source.c_str(), 
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                           std::ios::binary | std::ios::out 
                           | std::ios::trunc);
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#else
        std::ofstream fout(source.c_str(), 
                           std::ios::out | std::ios::trunc);
#endif
        if(fout)
          {
          fout.write("# generated from CMake",22);
          fout.flush();
          fout.close();
          }
        }
      }
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    }
  
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  // Compute which sources need unique object computation.
  this->ComputeObjectNameRequirements(sourceGroups);
  
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  // Write the DSP file's header.
  this->WriteDSPHeader(fout, libName, target, sourceGroups);
  
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  // Loop through every source group.
  for(std::vector<cmSourceGroup>::const_iterator sg = sourceGroups.begin();
      sg != sourceGroups.end(); ++sg)
    {
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    this->WriteGroup(&(*sg), target, fout, libName);
    }  

  // Write the DSP file's footer.
  this->WriteDSPFooter(fout);
}

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void cmLocalVisualStudio6Generator
::WriteGroup(const cmSourceGroup *sg, cmTarget target, 
             std::ostream &fout, const char *libName)
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{
  const std::vector<const cmSourceFile *> &sourceFiles = 
    sg->GetSourceFiles();
  // If the group is empty, don't write it at all.
        
  if(sourceFiles.empty())
    { 
    return; 
    }
    
  // If the group has a name, write the header.
  std::string name = sg->GetName();
  if(name != "")
    {
    this->WriteDSPBeginGroup(fout, name.c_str(), "");
    }
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  // Loop through each source in the source group.
  for(std::vector<const cmSourceFile *>::const_iterator sf =
        sourceFiles.begin(); sf != sourceFiles.end(); ++sf)
    {
    std::string source = (*sf)->GetFullPath();
    const cmCustomCommand *command = 
      (*sf)->GetCustomCommand();
    std::string compileFlags;
    std::vector<std::string> depends;
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    std::string objectNameDir;
    if(this->NeedObjectName.find(*sf) != this->NeedObjectName.end())
      {
      objectNameDir =
        cmSystemTools::GetFilenamePath(
          this->GetObjectFileNameWithoutTarget(*(*sf)));
      }
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    // Add per-source file flags.
    if(const char* cflags = (*sf)->GetProperty("COMPILE_FLAGS"))
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      {
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      compileFlags += cflags;
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      }

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    const char* lang = this->GetSourceFileLanguage(*(*sf));
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    if(lang && strcmp(lang, "CXX") == 0)
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      {
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      // force a C++ file type
      compileFlags += " /TP ";
      }
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    else if(lang && strcmp(lang, "C") == 0)
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      {
      // force to c file type
      compileFlags += " /TC ";
      }
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    // Check for extra object-file dependencies.
    const char* dependsValue = (*sf)->GetProperty("OBJECT_DEPENDS");
    if(dependsValue)
      {
      cmSystemTools::ExpandListArgument(dependsValue, depends);
      }
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    if (source != libName || target.GetType() == cmTarget::UTILITY ||
      target.GetType() == cmTarget::GLOBAL_TARGET)
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      {
      fout << "# Begin Source File\n\n";
        
      // Tell MS-Dev what the source is.  If the compiler knows how to
      // build it, then it will.
      fout << "SOURCE=" << 
        this->ConvertToOptionallyRelativeOutputPath(source.c_str()) << "\n\n";
      if(!depends.empty())
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        {
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        // Write out the dependencies for the rule.
        fout << "USERDEP__HACK=";
        for(std::vector<std::string>::const_iterator d = depends.begin();
            d != depends.end(); ++d)
          { 
          fout << "\\\n\t" << 
            this->ConvertToOptionallyRelativeOutputPath(d->c_str());
          }
        fout << "\n";
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        }
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      if (command)
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        {
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        std::string script =
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          this->ConstructScript(command->GetCommandLines(), 
                                command->GetWorkingDirectory(),
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                                command->GetEscapeOldStyle(),
                                command->GetEscapeAllowMakeVars(),
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                                "\\\n\t");
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        std::string comment =
          this->ConstructComment(*command,
                                 "Building Custom Rule $(InputPath)");
        if(comment == "<hack>")
          {
          comment = "";
          }
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        const char* flags = compileFlags.size() ? compileFlags.c_str(): 0;
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        this->WriteCustomRule(fout, source.c_str(), script.c_str(),
                              comment.c_str(), command->GetDepends(),
                              command->GetOutputs(), flags);
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        }
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      else if(!compileFlags.empty() || !objectNameDir.empty())
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        {
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        for(std::vector<std::string>::iterator i
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              = this->Configurations.begin(); 
            i != this->Configurations.end(); ++i)
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          { 
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          if (i == this->Configurations.begin())
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            {
            fout << "!IF  \"$(CFG)\" == " << i->c_str() << std::endl;
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            }
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          else 
            {
            fout << "!ELSEIF  \"$(CFG)\" == " << i->c_str() << std::endl;
            }
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          if(!compileFlags.empty())
            {
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          fout << "\n# ADD CPP " << compileFlags << "\n\n";
          } 
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          if(!objectNameDir.empty())
            {
            // Strip the subdirectory name out of the configuration name.
            std::string config = *i;
            std::string::size_type pos = config.find_last_of(" ");
            config = config.substr(pos+1, std::string::npos);
            config = config.substr(0, config.size()-1);

            // Setup an alternate object file directory.
            fout << "\n# PROP Intermediate_Dir \""
                 << config << "/" << objectNameDir << "\"\n\n";
            }
          } 
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        fout << "!ENDIF\n\n";
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        }
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      fout << "# End Source File\n";
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      }
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    }

  std::vector<cmSourceGroup> children  = sg->GetGroupChildren();

  for(unsigned int i=0;i<children.size();++i)
    {
    this->WriteGroup(&children[i], target, fout, libName);
    }



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  // If the group has a name, write the footer.
  if(name != "")
    {
    this->WriteDSPEndGroup(fout);
    }
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}


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void
cmLocalVisualStudio6Generator
::AddUtilityCommandHack(cmTarget& target, int count,
                        std::vector<std::string>& depends,
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                        const cmCustomCommand& origCommand)
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{
  // Create a fake output that forces the rule to run.
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  char* output = new char[(strlen(this->Makefile->GetStartOutputDirectory()) +
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                           strlen(target.GetName()) + 30)];
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  sprintf(output,"%s/%s_force_%i", this->Makefile->GetStartOutputDirectory(),
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          target.GetName(), count);
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  std::string comment = this->ConstructComment(origCommand, "<hack>");
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  // Add the rule with the given dependencies and commands.
  const char* no_main_dependency = 0;
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  this->Makefile->AddCustomCommandToOutput(output,
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                                       depends,
                                       no_main_dependency,
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                                       origCommand.GetCommandLines(),
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                                       comment.c_str(),
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                                       origCommand.GetWorkingDirectory());
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  // Replace the dependencies with the output of this rule so that the
  // next rule added will run after this one.
  depends.clear();
  depends.push_back(output);

  // Add a source file representing this output to the project.
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  cmSourceFile* outsf = this->Makefile->GetSourceFileWithOutput(output);
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  target.GetSourceFiles().push_back(outsf);

  // Free the fake output name.
  delete [] output;
}

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void
cmLocalVisualStudio6Generator
::WriteCustomRule(std::ostream& fout,
                  const char* source,
                  const char* command,
                  const char* comment,
                  const std::vector<std::string>& depends,
                  const std::vector<std::string>& outputs,
                  const char* flags)
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{
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  // Write the rule for each configuration.
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  std::vector<std::string>::iterator i;
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  for(i = this->Configurations.begin(); i != this->Configurations.end(); ++i)
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    {
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    if (i == this->Configurations.begin())
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      {
      fout << "!IF  \"$(CFG)\" == " << i->c_str() << std::endl;
      }
    else 
      {
      fout << "!ELSEIF  \"$(CFG)\" == " << i->c_str() << std::endl;
      }
    if(flags)
      {
      fout << "\n# ADD CPP " << flags << "\n\n";
      }
    // Write out the dependencies for the rule.
    fout << "USERDEP__HACK=";
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    for(std::vector<std::string>::const_iterator d = depends.begin();
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        d != depends.end(); ++d)
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      {
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      // Lookup the real name of the dependency in case it is a CMake target.
      std::string dep = this->GetRealDependency(d->c_str(), i->c_str());
      fout << "\\\n\t" <<
        this->ConvertToOptionallyRelativeOutputPath(dep.c_str());
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      }
    fout << "\n";

    fout << "# PROP Ignore_Default_Tool 1\n";
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    fout << "# Begin Custom Build -";
    if(comment && *comment)
      {
      fout << " " << comment;
      }
    fout << "\n\n";
    if(outputs.empty())
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      {
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      fout << source 
           << "_force :  \"$(SOURCE)\" \"$(INTDIR)\" \"$(OUTDIR)\"\n\t";
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      fout << command << "\n\n";
      }
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    else
      {
      for(std::vector<std::string>::const_iterator o = outputs.begin();
          o != outputs.end(); ++o)
        {
        // Write a rule for every output generated by this command.
        fout << this->ConvertToOptionallyRelativeOutputPath(o->c_str())
             << " :  \"$(SOURCE)\" \"$(INTDIR)\" \"$(OUTDIR)\"\n\t";
        fout << command << "\n\n";
        }
      }
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    fout << "# End Custom Build\n\n";
    }
  
  fout << "!ENDIF\n\n";
}


void cmLocalVisualStudio6Generator::WriteDSPBeginGroup(std::ostream& fout, 
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                                                       const char* group,
                                                       const char* filter)
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{
  fout << "# Begin Group \"" << group << "\"\n"
    "# PROP Default_Filter \"" << filter << "\"\n";
}


void cmLocalVisualStudio6Generator::WriteDSPEndGroup(std::ostream& fout)
{
  fout << "# End Group\n";
}




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void cmLocalVisualStudio6Generator::SetBuildType(BuildType b,
                                                 const char* libName,
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                                                 cmTarget& target)
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{
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  std::string root= this->Makefile->GetRequiredDefinition("CMAKE_ROOT");
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  const char *def= 
    this->Makefile->GetDefinition( "MSPROJECT_TEMPLATE_DIRECTORY");
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  if( def)
    {
    root = def;
    }
  else
    {
    root += "/Templates";
    }
  
  switch(b)
    {
    case STATIC_LIBRARY:
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      this->DSPHeaderTemplate = root;
      this->DSPHeaderTemplate += "/staticLibHeader.dsptemplate";
      this->DSPFooterTemplate = root;
      this->DSPFooterTemplate += "/staticLibFooter.dsptemplate";
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      break;
    case DLL:
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      this->DSPHeaderTemplate =  root;
      this->DSPHeaderTemplate += "/DLLHeader.dsptemplate";
      this->DSPFooterTemplate =  root;
      this->DSPFooterTemplate += "/DLLFooter.dsptemplate";
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      break;
    case EXECUTABLE:
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      if ( target.GetPropertyAsBool("WIN32_EXECUTABLE") )
        {
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        this->DSPHeaderTemplate = root;
        this->DSPHeaderTemplate += "/EXEWinHeader.dsptemplate";
        this->DSPFooterTemplate = root;
        this->DSPFooterTemplate += "/EXEFooter.dsptemplate";
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        }
      else
        {
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        this->DSPHeaderTemplate = root;
        this->DSPHeaderTemplate += "/EXEHeader.dsptemplate";
        this->DSPFooterTemplate = root;
        this->DSPFooterTemplate += "/EXEFooter.dsptemplate";
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        }
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      break;
    case UTILITY:
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      this->DSPHeaderTemplate = root;
      this->DSPHeaderTemplate += "/UtilityHeader.dsptemplate";
      this->DSPFooterTemplate = root;
      this->DSPFooterTemplate += "/UtilityFooter.dsptemplate";
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      break;
    }

  // once the build type is set, determine what configurations are
  // possible
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  std::ifstream fin(this->DSPHeaderTemplate.c_str());
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  cmsys::RegularExpression reg("# Name ");
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  if(!fin)
    {
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    cmSystemTools::Error("Error Reading ", this->DSPHeaderTemplate.c_str());
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    }

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  // reset this->Configurations
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  this->Configurations.erase(this->Configurations.begin(), 
                             this->Configurations.end());
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  // now add all the configurations possible
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  std::string line;
  while(cmSystemTools::GetLineFromStream(fin, line))
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    {
    cmSystemTools::ReplaceString(line, "OUTPUT_LIBNAME",libName);
    if (reg.find(line))
      {
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      this->Configurations.push_back(line.substr(reg.end()));
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      }
    }
}

// look for custom rules on a target and collect them together
std::string 
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cmLocalVisualStudio6Generator::CreateTargetRules(cmTarget &target, 
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                                                 const char * /* libName */)
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{
  std::string customRuleCode = "";

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  if (target.GetType() >= cmTarget::UTILITY )
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    {
    return customRuleCode;
    }
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  // are there any rules?
  if (target.GetPreBuildCommands().size() + 
      target.GetPreLinkCommands().size() + 
      target.GetPostBuildCommands().size() == 0)
    {
    return customRuleCode;
    }
    
  customRuleCode = "# Begin Special Build Tool\n";
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  // Write the pre-build and pre-link together (VS6 does not support
  // both).  Make sure no continuation character is put on the last
  // line.
  int prelink_total = (static_cast<int>(target.GetPreBuildCommands().size())+
                       static_cast<int>(target.GetPreLinkCommands().size()));
  int prelink_count = 0;
  if(prelink_total > 0)
    {
    // header stuff
    customRuleCode += "PreLink_Cmds=";
    }
  for (std::vector<cmCustomCommand>::const_iterator cr =
         target.GetPreBuildCommands().begin();
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       cr != target.GetPreBuildCommands().end(); ++cr)
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    {
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    if(prelink_count++ > 0)
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      {
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      customRuleCode += "\\\n\t";
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      }
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    customRuleCode += this->ConstructScript(cr->GetCommandLines(),
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                                            cr->GetWorkingDirectory(),
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                                            cr->GetEscapeOldStyle(),
                                            cr->GetEscapeAllowMakeVars(),
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                                            "\\\n\t");
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    }
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  for (std::vector<cmCustomCommand>::const_iterator cr =
         target.GetPreLinkCommands().begin();
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       cr != target.GetPreLinkCommands().end(); ++cr)
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    {
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    if(prelink_count++ > 0)
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      {
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      customRuleCode += "\\\n\t";
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      }
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    customRuleCode += this->ConstructScript(cr->GetCommandLines(),
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                                            cr->GetWorkingDirectory(),
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                                            cr->GetEscapeOldStyle(),
                                            cr->GetEscapeAllowMakeVars(),
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                                            "\\\n\t");
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    }
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  if(prelink_total > 0)
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    {
    customRuleCode += "\n";
    }
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  // Write the post-build rules.  Make sure no continuation character
  // is put on the last line.
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  int postbuild_total = 
    static_cast<int>(target.GetPostBuildCommands().size());
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  int postbuild_count = 0;
  if(postbuild_total > 0)
    {
    customRuleCode += "PostBuild_Cmds=";
    }
  for (std::vector<cmCustomCommand>::const_iterator cr =
         target.GetPostBuildCommands().begin();
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       cr != target.GetPostBuildCommands().end(); ++cr)
    {
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    if(postbuild_count++ > 0)
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      {
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      customRuleCode += "\\\n\t";
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      }
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    customRuleCode += this->ConstructScript(cr->GetCommandLines(),
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                                            cr->GetWorkingDirectory(),
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                                            cr->GetEscapeOldStyle(),
                                            cr->GetEscapeAllowMakeVars(),
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                                            "\\\n\t");
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    }
  if(postbuild_total > 0)
    {
    customRuleCode += "\n";
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    }

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  customRuleCode += "# End Special Build Tool\n";
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  return customRuleCode;
}


inline std::string removeQuotes(const std::string& s)
{
  if(s[0] == '\"' && s[s.size()-1] == '\"')
    {
    return s.substr(1, s.size()-2);
    }
  return s;
}

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// Code in blocks surrounded by a test for this definition is needed
// only for compatibility with user project's replacement DSP
// templates.  The CMake templates no longer use them.
#define CM_USE_OLD_VS6
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void cmLocalVisualStudio6Generator
::WriteDSPHeader(std::ostream& fout, 
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                 const char *libName, cmTarget &target, 
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                 std::vector<cmSourceGroup> &)
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{
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  // Lookup the library and executable output directories.
  std::string libPath;
  if(this->Makefile->GetDefinition("LIBRARY_OUTPUT_PATH"))
    {
    libPath = this->Makefile->GetDefinition("LIBRARY_OUTPUT_PATH");
    }
  std::string exePath;
  if(this->Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH"))
    {
    exePath = this->Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH");
    }

  // Make sure there are trailing slashes.
  if(!libPath.empty())
    {
    if(libPath[libPath.size()-1] != '/')
      {
      libPath += "/";
      }
    }
  if(!exePath.empty())
    {
    if(exePath[exePath.size()-1] != '/')
      {
      exePath += "/";
      }
    }

#ifdef CM_USE_OLD_VS6
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  std::set<std::string> pathEmitted;
  
  // determine the link directories
  std::string libOptions;
  std::string libDebugOptions;
  std::string libOptimizedOptions;

  std::string libMultiLineOptions;
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  std::string libMultiLineOptionsForDebug;
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  std::string libMultiLineDebugOptions;
  std::string libMultiLineOptimizedOptions;

  if(libPath.size())
    {
    std::string lpath = 
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      this->ConvertToOptionallyRelativeOutputPath(libPath.c_str());
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    if(lpath.size() == 0)
      {
      lpath = ".";
      }
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    std::string lpathIntDir = libPath + "$(INTDIR)";
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    lpathIntDir =  
      this->ConvertToOptionallyRelativeOutputPath(lpathIntDir.c_str());
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    if(pathEmitted.insert(lpath).second)
      {
      libOptions += " /LIBPATH:";
      libOptions += lpathIntDir;
      libOptions += " ";
      libOptions += " /LIBPATH:";
      libOptions += lpath;
      libOptions += " ";
      libMultiLineOptions += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptions += lpathIntDir;
      libMultiLineOptions += " ";
      libMultiLineOptions += " /LIBPATH:";
      libMultiLineOptions += lpath;
      libMultiLineOptions += " \n";
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      libMultiLineOptionsForDebug += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptionsForDebug += lpathIntDir;
      libMultiLineOptionsForDebug += " ";
      libMultiLineOptionsForDebug += " /LIBPATH:";
      libMultiLineOptionsForDebug += lpath;
      libMultiLineOptionsForDebug += " \n";
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      }
    }
  if(exePath.size())
    {
    std::string lpath = 
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      this->ConvertToOptionallyRelativeOutputPath(exePath.c_str());
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    if(lpath.size() == 0)
      {
      lpath = ".";
      }
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    std::string lpathIntDir = exePath + "$(INTDIR)";
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    lpathIntDir =
      this->ConvertToOptionallyRelativeOutputPath(lpathIntDir.c_str());
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    if(pathEmitted.insert(lpath).second)
      {
      libOptions += " /LIBPATH:";
      libOptions += lpathIntDir;
      libOptions += " ";
      libOptions += " /LIBPATH:";
      libOptions += lpath;
      libOptions += " ";
      libMultiLineOptions += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptions += lpathIntDir;
      libMultiLineOptions += " ";
      libMultiLineOptions += " /LIBPATH:";
      libMultiLineOptions += lpath;
      libMultiLineOptions += " \n";
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      libMultiLineOptionsForDebug += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptionsForDebug += lpathIntDir;
      libMultiLineOptionsForDebug += " ";
      libMultiLineOptionsForDebug += " /LIBPATH:";
      libMultiLineOptionsForDebug += lpath;
      libMultiLineOptionsForDebug += " \n";
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      }
    }
  std::vector<std::string>::const_iterator i;
  const std::vector<std::string>& libdirs = target.GetLinkDirectories();
  for(i = libdirs.begin(); i != libdirs.end(); ++i)
    {
    std::string path = *i;
    if(path[path.size()-1] != '/')
      {
      path += "/";
      }
    std::string lpath = 
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      this->ConvertToOptionallyRelativeOutputPath(path.c_str());
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    if(lpath.size() == 0)
      {
      lpath = ".";
      }
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    std::string lpathIntDir = path + "$(INTDIR)";
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    lpathIntDir =
      this->ConvertToOptionallyRelativeOutputPath(lpathIntDir.c_str());
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    if(pathEmitted.insert(lpath).second)
      {
      libOptions += " /LIBPATH:";
      libOptions += lpathIntDir;
      libOptions += " ";
      libOptions += " /LIBPATH:";
      libOptions += lpath;
      libOptions += " ";
      
      libMultiLineOptions += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptions += lpathIntDir;
      libMultiLineOptions += " ";
      libMultiLineOptions += " /LIBPATH:";
      libMultiLineOptions += lpath;
      libMultiLineOptions += " \n";
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      libMultiLineOptionsForDebug += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptionsForDebug += lpathIntDir;
      libMultiLineOptionsForDebug += " ";
      libMultiLineOptionsForDebug += " /LIBPATH:";
      libMultiLineOptionsForDebug += lpath;
      libMultiLineOptionsForDebug += " \n";
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      }
    }
  // find link libraries
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  const cmTarget::LinkLibraryVectorType& libs = target.GetLinkLibraries();
  cmTarget::LinkLibraryVectorType::const_iterator j;
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  for(j = libs.begin(); j != libs.end(); ++j)
    {
    // add libraries to executables and dlls (but never include
    // a library in a library, bad recursion)
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    // NEVER LINK STATIC LIBRARIES TO OTHER STATIC LIBRARIES
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    if ((target.GetType() != cmTarget::SHARED_LIBRARY
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         && target.GetType() != cmTarget::STATIC_LIBRARY 
         && target.GetType() != cmTarget::MODULE_LIBRARY) || 
        (target.GetType()==cmTarget::SHARED_LIBRARY && libName != j->first) ||
        (target.GetType()==cmTarget::MODULE_LIBRARY && libName != j->first))
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      {
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      // Compute the proper name to use to link this library.
      std::string lib;
      std::string libDebug;
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      cmTarget* tgt = this->GlobalGenerator->FindTarget(0, j->first.c_str());
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      if(tgt)
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        {
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        lib = cmSystemTools::GetFilenameWithoutExtension
          (tgt->GetFullName().c_str());
        libDebug = cmSystemTools::GetFilenameWithoutExtension
          (tgt->GetFullName("Debug").c_str());
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        lib += ".lib";
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        libDebug += ".lib";
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        }
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      else
        {
        lib = j->first.c_str();
        libDebug = j->first.c_str();
        if(j->first.find(".lib") == std::string::npos)
          {
          lib += ".lib";
          libDebug += ".lib";
          }
        }
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      lib = this->ConvertToOptionallyRelativeOutputPath(lib.c_str());
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      libDebug = 
        this->ConvertToOptionallyRelativeOutputPath(libDebug.c_str());
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      if (j->second == cmTarget::GENERAL)
        {
        libOptions += " ";
        libOptions += lib;
        libMultiLineOptions += "# ADD LINK32 ";
        libMultiLineOptions +=  lib;
        libMultiLineOptions += "\n";
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        libMultiLineOptionsForDebug += "# ADD LINK32 ";
        libMultiLineOptionsForDebug +=  libDebug;
        libMultiLineOptionsForDebug += "\n";
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        }
      if (j->second == cmTarget::DEBUG)
        {
        libDebugOptions += " ";
        libDebugOptions += lib;

        libMultiLineDebugOptions += "# ADD LINK32 ";
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        libMultiLineDebugOptions += libDebug;
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        libMultiLineDebugOptions += "\n";
        }
      if (j->second == cmTarget::OPTIMIZED)
        {
        libOptimizedOptions += " ";
        libOptimizedOptions += lib;

        libMultiLineOptimizedOptions += "# ADD LINK32 ";
        libMultiLineOptimizedOptions += lib;
        libMultiLineOptimizedOptions += "\n";
        }      
      }
    }
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#endif
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  // Get extra linker options for this target type.
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  std::string extraLinkOptions;
  if(target.GetType() == cmTarget::EXECUTABLE)
    {
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    extraLinkOptions = 
      this->Makefile->GetRequiredDefinition("CMAKE_EXE_LINKER_FLAGS");
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    }
  if(target.GetType() == cmTarget::SHARED_LIBRARY)
    {
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    extraLinkOptions = 
      this->Makefile->GetRequiredDefinition("CMAKE_SHARED_LINKER_FLAGS");
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    }
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  if(target.GetType() == cmTarget::MODULE_LIBRARY)
    {
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    extraLinkOptions = 
      this->Makefile->GetRequiredDefinition("CMAKE_MODULE_LINKER_FLAGS");
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    }
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  // Get extra linker options for this target.
  if(const char* targetLinkFlags = target.GetProperty("LINK_FLAGS"))
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    {
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    extraLinkOptions += " ";
    extraLinkOptions += targetLinkFlags;
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    }

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  // Get standard libraries for this language.
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  if(target.GetType() >= cmTarget::EXECUTABLE && 
     target.GetType() <= cmTarget::MODULE_LIBRARY)
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    {
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    // Get the language to use for linking.
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    const char* linkLanguage = 
      target.GetLinkerLanguage(this->GetGlobalGenerator());
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    if(!linkLanguage)
      {
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      cmSystemTools::Error
        ("CMake can not determine linker language for target:",
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                           target.GetName());
      return;
      }

    // Compute the variable name to lookup standard libraries for this
    // language.
    std::string standardLibsVar = "CMAKE_";
    standardLibsVar += linkLanguage;
    standardLibsVar += "_STANDARD_LIBRARIES";

    // Add standard libraries.
    if(const char* stdLibs =
       this->Makefile->GetDefinition(standardLibsVar.c_str()))
      {
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      extraLinkOptions += " ";
      extraLinkOptions += stdLibs;
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      }
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    }
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  // Compute version number information.
  std::string targetVersionFlag;
  if(target.GetType() == cmTarget::EXECUTABLE ||
     target.GetType() == cmTarget::SHARED_LIBRARY ||
     target.GetType() == cmTarget::MODULE_LIBRARY)
    {
    int major;
    int minor;
    target.GetTargetVersion(major, minor);
    cmOStringStream targetVersionStream;
    targetVersionStream << "/version:" << major << "." << minor;
    targetVersionFlag = targetVersionStream.str();
    }