/*=========================================================================

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

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.

     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"
#include <queue>

cmLocalVisualStudio6Generator::cmLocalVisualStudio6Generator()
{
}

cmLocalVisualStudio6Generator::~cmLocalVisualStudio6Generator()
{
}


void cmLocalVisualStudio6Generator::Generate(bool /* fromTheTop */)
{
  this->OutputDSPFile();
}

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

  // Setup /I and /LIBPATH options for the resulting DSP file
  std::vector<std::string>& includes = m_Makefile->GetIncludeDirectories();
  std::vector<std::string>::iterator i;
  for(i = includes.begin(); i != includes.end(); ++i)
    {
    m_IncludeOptions +=  " /I ";
    std::string tmp = cmSystemTools::ConvertToOutputPath(i->c_str());

    // quote if not already quoted
    if (tmp[0] != '"')
      {
      m_IncludeOptions += "\"";
      m_IncludeOptions += tmp;
      m_IncludeOptions += "\"";
      }
    else
      {
      m_IncludeOptions += tmp;
      }
    }
  
  // Create the DSP or set of DSP's for libraries and executables

  // clear project names
  m_CreatedProjectNames.clear();

  // expand vars for custom commands
  m_Makefile->ExpandVariablesInCustomCommands();

  // build any targets
  cmTargets &tgts = m_Makefile->GetTargets();
  for(cmTargets::iterator l = tgts.begin(); 
      l != tgts.end(); l++)
    {
    switch(l->second.GetType())
      {
      case cmTarget::STATIC_LIBRARY:
        this->SetBuildType(STATIC_LIBRARY, l->first.c_str(), l->second);
        break;
      case cmTarget::SHARED_LIBRARY:
      case cmTarget::MODULE_LIBRARY:
        this->SetBuildType(DLL, l->first.c_str(), l->second);
        break;
      case cmTarget::EXECUTABLE:
        this->SetBuildType(EXECUTABLE,l->first.c_str(), l->second);
        break;
      case cmTarget::WIN32_EXECUTABLE:
        this->SetBuildType(WIN32_EXECUTABLE,l->first.c_str(), l->second);
        break;
      case cmTarget::UTILITY:
        this->SetBuildType(UTILITY, l->first.c_str(), l->second);
        break;
      case cmTarget::INSTALL_FILES:
        break;
      case cmTarget::INSTALL_PROGRAMS:
        break;
      default:
        cmSystemTools::Error("Bad target type", l->first.c_str());
        break;
      }
    // 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)
        {
        std::string dir = m_Makefile->GetStartOutputDirectory();
        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);
      }
    }
}

void cmLocalVisualStudio6Generator::CreateSingleDSP(const char *lname, cmTarget &target)
{
  // add to the list of projects
  std::string pname = lname;
  m_CreatedProjectNames.push_back(pname);
  // create the dsp.cmake file
  std::string fname;
  fname = m_Makefile->GetStartOutputDirectory();
  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());
    }
  this->WriteDSPFile(fout,lname,target);
  fout.close();
  // if the dsp file has changed, then write it.
  cmSystemTools::CopyFileIfDifferent(fname.c_str(), realDSP.c_str());
}


void cmLocalVisualStudio6Generator::AddDSPBuildRule()
{
  std::string dspname = *(m_CreatedProjectNames.end()-1);
  if(dspname == "ALL_BUILD")
  {
    return;
  }
  dspname += ".dsp.cmake";
  std::string makefileIn = m_Makefile->GetStartDirectory();
  makefileIn += "/";
  makefileIn += "CMakeLists.txt";
  makefileIn = cmSystemTools::ConvertToOutputPath(makefileIn.c_str());
  std::string dsprule = "${CMAKE_COMMAND}";
  m_Makefile->ExpandVariablesInString(dsprule);
  dsprule = cmSystemTools::ConvertToOutputPath(dsprule.c_str());
  std::vector<std::string> argv;
  argv.push_back(makefileIn);
  makefileIn = m_Makefile->GetStartDirectory();
  makefileIn += "/";
  makefileIn += "CMakeLists.txt";
  std::string args;
  args = "-H";
  args +=
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetHomeDirectory());
  argv.push_back(args);
  args = "-S";
  args +=
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetStartDirectory());
  argv.push_back(args);
  args = "-O";
  args += 
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetStartOutputDirectory());
  argv.push_back(args);
  args = "-B";
  args += 
    cmSystemTools::ConvertToOutputPath(m_Makefile->GetHomeOutputDirectory());
  argv.push_back(args);

  std::string configFile = 
    m_Makefile->GetDefinition("CMAKE_ROOT");
  configFile += "/Templates/CMakeWindowsSystemConfig.cmake";
  std::vector<std::string> listFiles = m_Makefile->GetListFiles();
  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);
    }
  m_Makefile->AddCustomCommandToOutput(dspname.c_str(), dsprule.c_str(), 
                                       argv, makefileIn.c_str(), listFiles,
                                       NULL, true);
}


void cmLocalVisualStudio6Generator::WriteDSPFile(std::ostream& fout, 
                                 const char *libName,
                                 cmTarget &target)
{
  // We may be modifying the source groups temporarily, so make a copy.
  std::vector<cmSourceGroup> sourceGroups = m_Makefile->GetSourceGroups();
  
  // if we should add regen rule then...
  const char *suppRegenRule = 
    m_Makefile->GetDefinition("CMAKE_SUPPRESS_REGENERATION");
  if (!cmSystemTools::IsOn(suppRegenRule))
    {
    this->AddDSPBuildRule();
    }

  // get the classes from the source lists then add them to the groups
  std::vector<cmSourceFile*> & classes = target.GetSourceFiles();
  // use a deck to keep track of processed source files
  std::queue<std::string> srcFilesToProcess;
  std::string name;
  for(std::vector<cmSourceFile*>::const_iterator i = classes.begin(); 
      i != classes.end(); ++i)
    {
    name = (*i)->GetSourceName();
    if ((*i)->GetSourceExtension() != "rule")
      {
      name += ".";
      name += (*i)->GetSourceExtension();
      }
    srcFilesToProcess.push(name);
    }
  name = libName;
  name += ".dsp.cmake";
  srcFilesToProcess.push(name);
  // add in the library depends for cusotm targets
  if (target.GetType() == cmTarget::UTILITY)
    {
    for (std::vector<cmCustomCommand>::iterator ic = 
           target.GetPostBuildCommands().begin();
         ic != target.GetPostBuildCommands().end(); ++ic)
      {
      cmCustomCommand &c = *ic;
      for (std::vector<std::string>::iterator i = c.GetDepends().begin();
           i != c.GetDepends().end(); ++i)
        {
        srcFilesToProcess.push(*i);
        }
      }
    }
  while (!srcFilesToProcess.empty())
    {
    // is this source the output of a custom command
    cmSourceFile* outsf = 
      m_Makefile->GetSourceFileWithOutput(srcFilesToProcess.front().c_str());
    if (outsf)
      {
      // is it not already in the target?
      if (std::find(classes.begin(),classes.end(),outsf) == classes.end())
        {
        // then add the source to this target and add it to the queue
        classes.push_back(outsf);
        std::string name = outsf->GetSourceName();
        if (outsf->GetSourceExtension() != "rule")
          {
          name += ".";
          name += outsf->GetSourceExtension();
          }
        std::string temp = 
          cmSystemTools::GetFilenamePath(outsf->GetFullPath());
        temp += "/";
        temp += name;
        srcFilesToProcess.push(temp);
        }
      // add its dependencies to the list to check
      unsigned int i;
      for (i = 0; i < outsf->GetCustomCommand()->GetDepends().size(); ++i)
        {
        std::string dep = cmSystemTools::GetFilenameName(
          outsf->GetCustomCommand()->GetDepends()[i]);
        if (cmSystemTools::GetFilenameLastExtension(dep) == ".exe")
          {
          dep = cmSystemTools::GetFilenameWithoutLastExtension(dep);
          }
        // watch for target dependencies,
        std::string libPath = dep + "_CMAKE_PATH";
        const char* cacheValue = m_Makefile->GetDefinition(libPath.c_str());
        if (cacheValue)
          {
          // add the depend as a utility on the target
          target.AddUtility(dep.c_str());
          }
        else
          {
          srcFilesToProcess.push(outsf->GetCustomCommand()->GetDepends()[i]);
          }
        }
      }
    // finished with this SF move to the next
    srcFilesToProcess.pop();
    }

  // now all of the source files have been properly assigned to the target
  // now stick them into source groups using the reg expressions
  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();
    cmSourceGroup& sourceGroup = m_Makefile->FindSourceGroup(source.c_str(),
                                                             sourceGroups);
    sourceGroup.AddSource(source.c_str(), *i);
    // 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()))
        {
#if defined(_WIN32) || defined(__CYGWIN__)
        std::ofstream fout(source.c_str(), 
                           std::ios::binary | std::ios::out | std::ios::trunc);
#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();
          }
        }
      }
    }
  
  // Write the DSP file's header.
  this->WriteDSPHeader(fout, libName, target, sourceGroups);
  
  // Loop through every source group.
  for(std::vector<cmSourceGroup>::const_iterator sg = sourceGroups.begin();
      sg != sourceGroups.end(); ++sg)
    {
    const std::vector<const cmSourceFile *> &sourceFiles = 
      sg->GetSourceFiles();
    // If the group is empty, don't write it at all.
    if(sourceFiles.empty())
      { 
      continue; 
      }
    
    // If the group has a name, write the header.
    std::string name = sg->GetName();
    if(name != "")
      {
      this->WriteDSPBeginGroup(fout, name.c_str(), "");
      }
    
    // 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;
      const char* cflags = (*sf)->GetProperty("COMPILE_FLAGS");
      if(cflags)
        {
        compileFlags = cflags;
        }
      if(cmSystemTools::GetFileFormat((*sf)->GetSourceExtension().c_str())
         == cmSystemTools::CXX_FILE_FORMAT)
        {
        // force a C++ file type
        compileFlags += " /TP ";
        }
      
      // Check for extra object-file dependencies.
      const char* dependsValue = (*sf)->GetProperty("OBJECT_DEPENDS");
      if(dependsValue)
        {
        cmSystemTools::ExpandListArgument(dependsValue, depends);
        }
      if (source != libName || target.GetType() == cmTarget::UTILITY)
        {
        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=" << 
          cmSystemTools::ConvertToOutputPath(source.c_str()) << "\n\n";
        if(!depends.empty())
          {
          // 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" << 
              cmSystemTools::ConvertToOutputPath(d->c_str());
            }
          fout << "\n";
          }
        if (command)
          {
          std::string totalCommandStr;
          totalCommandStr = 
            cmSystemTools::ConvertToOutputPath(command->GetCommand().c_str()); 
          totalCommandStr += " ";
          totalCommandStr += command->GetArguments();
          totalCommandStr += "\n";
          const char* comment = command->GetComment().c_str();
          const char* flags = compileFlags.size() ? compileFlags.c_str(): 0;
          this->WriteCustomRule(fout, source.c_str(), totalCommandStr.c_str(), 
                                (*comment?comment:"Custom Rule"),
                                command->GetDepends(), 
                                command->GetOutput().c_str(), flags);
          }
        else if(compileFlags.size())
          {
          for(std::vector<std::string>::iterator i
                = m_Configurations.begin(); i != m_Configurations.end(); ++i)
            { 
            if (i == m_Configurations.begin())
              {
              fout << "!IF  \"$(CFG)\" == " << i->c_str() << std::endl;
              }
            else 
              {
              fout << "!ELSEIF  \"$(CFG)\" == " << i->c_str() << std::endl;
              }
            fout << "\n# ADD CPP " << compileFlags << "\n\n";
            } 
          fout << "!ENDIF\n\n";
          }
        fout << "# End Source File\n";
        }
      }
    
    // If the group has a name, write the footer.
    if(name != "")
      {
      this->WriteDSPEndGroup(fout);
      }
    }  

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


void cmLocalVisualStudio6Generator::WriteCustomRule(std::ostream& fout,
                                  const char* source,
                                  const char* command,
                                  const char* comment,
                                  const std::vector<std::string>& depends,
                                  const char *output,
                                  const char* flags
                                  )
{
  std::vector<std::string>::iterator i;
  for(i = m_Configurations.begin(); i != m_Configurations.end(); ++i)
    {
    if (i == m_Configurations.begin())
      {
      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=";
    for(std::vector<std::string>::const_iterator d = depends.begin();
        d != depends.end(); ++d)
      {
      fout << "\\\n\t" << 
        cmSystemTools::ConvertToOutputPath(d->c_str());
      }
    fout << "\n";

    fout << "# PROP Ignore_Default_Tool 1\n";
    fout << "# Begin Custom Build - Building " << comment 
         << " $(InputPath)\n\n";
    if(output == 0)
      {
      fout << source << "_force :  \"$(SOURCE)\" \"$(INTDIR)\" \"$(OUTDIR)\"\n\t";
      fout << command << "\n\n";
      }
    
    // Write a rule for every output generated by this command.
    fout << cmSystemTools::ConvertToOutputPath(output)
         << " :  \"$(SOURCE)\" \"$(INTDIR)\" \"$(OUTDIR)\"\n\t";
    fout << command << "\n\n";
    fout << "# End Custom Build\n\n";
    }
  
  fout << "!ENDIF\n\n";
}


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


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




void cmLocalVisualStudio6Generator::SetBuildType(BuildType b,
                                                 const char* libName,
                                                 const cmTarget& target)
{
  std::string root= m_Makefile->GetDefinition("CMAKE_ROOT");
  const char *def= m_Makefile->GetDefinition( "MSPROJECT_TEMPLATE_DIRECTORY");

  std::string exportSymbol;
  if (const char* custom_export_name = target.GetProperty("DEFINE_SYMBOL"))
    {
    exportSymbol = custom_export_name;
    }
  else
    {
    std::string in = libName;
    in += "_EXPORTS";
    exportSymbol = cmSystemTools::MakeCindentifier(in.c_str());
    }

  if( def)
    {
    root = def;
    }
  else
    {
    root += "/Templates";
    }
  
  switch(b)
    {
    case STATIC_LIBRARY:
      m_DSPHeaderTemplate = root;
      m_DSPHeaderTemplate += "/staticLibHeader.dsptemplate";
      m_DSPFooterTemplate = root;
      m_DSPFooterTemplate += "/staticLibFooter.dsptemplate";
      break;
    case DLL:
      m_DSPHeaderTemplate =  root;
      m_DSPHeaderTemplate += "/DLLHeader.dsptemplate";
      m_DSPFooterTemplate =  root;
      m_DSPFooterTemplate += "/DLLFooter.dsptemplate";
      break;
    case EXECUTABLE:
      m_DSPHeaderTemplate = root;
      m_DSPHeaderTemplate += "/EXEHeader.dsptemplate";
      m_DSPFooterTemplate = root;
      m_DSPFooterTemplate += "/EXEFooter.dsptemplate";
      break;
    case WIN32_EXECUTABLE:
      m_DSPHeaderTemplate = root;
      m_DSPHeaderTemplate += "/EXEWinHeader.dsptemplate";
      m_DSPFooterTemplate = root;
      m_DSPFooterTemplate += "/EXEFooter.dsptemplate";
      break;
    case UTILITY:
      m_DSPHeaderTemplate = root;
      m_DSPHeaderTemplate += "/UtilityHeader.dsptemplate";
      m_DSPFooterTemplate = root;
      m_DSPFooterTemplate += "/UtilityFooter.dsptemplate";
      break;
    }

  // once the build type is set, determine what configurations are
  // possible
  std::ifstream fin(m_DSPHeaderTemplate.c_str());

  cmRegularExpression reg("# Name ");
  if(!fin)
    {
    cmSystemTools::Error("Error Reading ", m_DSPHeaderTemplate.c_str());
    }

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

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

  if (target.GetType() > cmTarget::UTILITY)
    {
    return customRuleCode;
    }

  // are there any rules?
  if (target.GetPreBuildCommands().size() + 
      target.GetPreLinkCommands().size() + 
      target.GetPostBuildCommands().size() == 0)
    {
    return customRuleCode;
    }
    
  customRuleCode = "# Begin Special Build Tool\n";
  
  // Do the PreBuild and PreLink (VS6 does not support both)
  bool init = false;
  for (std::vector<cmCustomCommand>::const_iterator cr = 
         target.GetPreBuildCommands().begin(); 
       cr != target.GetPreBuildCommands().end(); ++cr)
    {
    cmCustomCommand cc(*cr);
    cc.ExpandVariables(*m_Makefile);
    if (!init)
      {
      // header stuff
      customRuleCode += "PreLink_Cmds=";
      init = true;
      }
    else
      {
      customRuleCode += "\t";
      }
    customRuleCode += cmSystemTools::ConvertToOutputPath(cc.GetCommand().c_str()) + " " + cc.GetArguments();
    }

  for (std::vector<cmCustomCommand>::const_iterator cr = 
         target.GetPreLinkCommands().begin(); 
       cr != target.GetPreLinkCommands().end(); ++cr)
    {
    cmCustomCommand cc(*cr);
    cc.ExpandVariables(*m_Makefile);
    if (!init)
      {
      // header stuff
      customRuleCode += "PreLink_Cmds=";
      init = true;
      }
    else
      {
      customRuleCode += "\t";
      }
    customRuleCode += cmSystemTools::ConvertToOutputPath(cc.GetCommand().c_str()) + " " + cc.GetArguments();
    }

  // do the post build rules
  init = false;
  for (std::vector<cmCustomCommand>::const_iterator cr = 
         target.GetPostBuildCommands().begin(); 
       cr != target.GetPostBuildCommands().end(); ++cr)
    {
    cmCustomCommand cc(*cr);
    cc.ExpandVariables(*m_Makefile);
    if (!init)
      {
      // header stuff
      customRuleCode += "PostBuild_Cmds=";
      init = true;
      }
    else
      {
      customRuleCode += "\t";
      }
    customRuleCode += 
      cmSystemTools::ConvertToOutputPath(cc.GetCommand().c_str()) + 
      " " + cc.GetArguments();
    }

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

  
void cmLocalVisualStudio6Generator::WriteDSPHeader(std::ostream& fout, const char *libName,
                                   const cmTarget &target, 
                                 std::vector<cmSourceGroup> &)
{
  std::set<std::string> pathEmitted;
  
  // determine the link directories
  std::string libOptions;
  std::string libDebugOptions;
  std::string libOptimizedOptions;

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

  // suppoirt override in output directory
  std::string libPath = "";
  if (m_Makefile->GetDefinition("LIBRARY_OUTPUT_PATH"))
    {
    libPath = m_Makefile->GetDefinition("LIBRARY_OUTPUT_PATH");
    }
  std::string exePath = "";
  if (m_Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH"))
    {
    exePath = m_Makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH");
    }

  if(libPath.size())
    {
    // make sure there is a trailing slash
    if(libPath[libPath.size()-1] != '/')
      {
      libPath += "/";
      }
    std::string lpath = 
      cmSystemTools::ConvertToOutputPath(libPath.c_str());
    std::string lpathIntDir = libPath + "$(INTDIR)";
    lpathIntDir =  cmSystemTools::ConvertToOutputPath(lpathIntDir.c_str());
    if(pathEmitted.insert(lpath).second)
      {
      libOptions += " /LIBPATH:";
      libOptions += lpathIntDir;
      libOptions += " ";
      libOptions += " /LIBPATH:";
      libOptions += lpath;
      libOptions += " ";
      libMultiLineOptions += "# ADD LINK32 /LIBPATH:";
      libMultiLineOptions += lpathIntDir;
      libMultiLineOptions += " ";
      libMultiLineOptions += " /LIBPATH:";
      libMultiLineOptions += lpath;
      libMultiLineOptions += " \n";
      }
    }
  if(exePath.size())
    {
    // make sure there is a trailing slash
    if(exePath[exePath.size()-1] != '/')
      {
      exePath += "/";
      }
    std::string lpath = 
      cmSystemTools::ConvertToOutputPath(exePath.c_str());
    std::string lpathIntDir = exePath + "$(INTDIR)";
    lpathIntDir =  cmSystemTools::ConvertToOutputPath(lpathIntDir.c_str());
    
    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";
      }
    }
  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 = 
      cmSystemTools::ConvertToOutputPath(path.c_str());
    std::string lpathIntDir = path + "$(INTDIR)";
    lpathIntDir =  cmSystemTools::ConvertToOutputPath(lpathIntDir.c_str());
    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";
      }
    }
  
  // find link libraries
  const cmTarget::LinkLibraries& libs = target.GetLinkLibraries();
  cmTarget::LinkLibraries::const_iterator j;
  for(j = libs.begin(); j != libs.end(); ++j)
    {
    // add libraries to executables and dlls (but never include
    // a library in a library, bad recursion)
    if ((target.GetType() != cmTarget::SHARED_LIBRARY
         && 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))
      {
      std::string lib = j->first;
      if(j->first.find(".lib") == std::string::npos)
        {
        lib += ".lib";
        }
      lib = cmSystemTools::ConvertToOutputPath(lib.c_str());

      if (j->second == cmTarget::GENERAL)
        {
        libOptions += " ";
        libOptions += lib;
        
        libMultiLineOptions += "# ADD LINK32 ";
        libMultiLineOptions +=  lib;
        libMultiLineOptions += "\n";
        }
      if (j->second == cmTarget::DEBUG)
        {
        libDebugOptions += " ";
        libDebugOptions += lib;

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

        libMultiLineOptimizedOptions += "# ADD LINK32 ";
        libMultiLineOptimizedOptions += lib;
        libMultiLineOptimizedOptions += "\n";
        }      
      }
    }
  std::string extraLinkOptions;
  if(target.GetType() == cmTarget::EXECUTABLE)
    {
    extraLinkOptions = m_Makefile->GetDefinition("CMAKE_EXE_LINKER_FLAGS");
    }
  if(target.GetType() == cmTarget::SHARED_LIBRARY)
    {
    extraLinkOptions = m_Makefile->GetDefinition("CMAKE_SHARED_LINKER_FLAGS");
    }
  if(target.GetType() == cmTarget::MODULE_LIBRARY)
    {
    extraLinkOptions = m_Makefile->GetDefinition("CMAKE_MODULE_LINKER_FLAGS");
    }

  if(extraLinkOptions.size())
    {
    libOptions += " ";
    libOptions += extraLinkOptions;
    libOptions += " ";
    libMultiLineOptions += "# ADD LINK32 ";
    libMultiLineOptions +=  extraLinkOptions;
    libMultiLineOptions += " \n";
    }

  if(const char* targetLinkFlags = target.GetProperty("LINK_FLAGS"))
    {
    libOptions += " ";
    libOptions += targetLinkFlags;
    libOptions += " ";
    libMultiLineOptions += "# ADD LINK32 ";
    libMultiLineOptions +=  targetLinkFlags;
    libMultiLineOptions += " \n";
    }

  
  // are there any custom rules on the target itself
  // only if the target is a lib or exe
  std::string customRuleCode = this->CreateTargetRules(target, libName);

  std::ifstream fin(m_DSPHeaderTemplate.c_str());
  if(!fin)
    {
    cmSystemTools::Error("Error Reading ", m_DSPHeaderTemplate.c_str());
    }

  std::string line;
  while(cmSystemTools::GetLineFromStream(fin, line))
    {
    const char* mfcFlag = m_Makefile->GetDefinition("CMAKE_MFC_FLAG");
    if(!mfcFlag)
      {
      mfcFlag = "0";
      }
    cmSystemTools::ReplaceString(line, "CMAKE_CUSTOM_RULE_CODE",
                                 customRuleCode.c_str());
    cmSystemTools::ReplaceString(line, "CMAKE_MFC_FLAG",
                                 mfcFlag);

    cmSystemTools::ReplaceString(line, "CM_LIBRARIES",
                                 libOptions.c_str());
    cmSystemTools::ReplaceString(line, "CM_DEBUG_LIBRARIES",
                                 libDebugOptions.c_str());
    cmSystemTools::ReplaceString(line, "CM_OPTIMIZED_LIBRARIES",
                                 libOptimizedOptions.c_str());

    cmSystemTools::ReplaceString(line, "CM_MULTILINE_LIBRARIES",
                                 libMultiLineOptions.c_str());
    cmSystemTools::ReplaceString(line, "CM_MULTILINE_DEBUG_LIBRARIES",
                                 libMultiLineDebugOptions.c_str());
    cmSystemTools::ReplaceString(line, "CM_MULTILINE_OPTIMIZED_LIBRARIES",
                                 libMultiLineOptimizedOptions.c_str());

    cmSystemTools::ReplaceString(line, "BUILD_INCLUDES",
                                 m_IncludeOptions.c_str());
    cmSystemTools::ReplaceString(line, "OUTPUT_LIBNAME",libName);
    // because LIBRARY_OUTPUT_PATH and EXECUTABLE_OUTPUT_PATH 
    // are already quoted in the template file,
    // we need to remove the quotes here, we still need
    // to convert to output path for unix to win32 conversion
    cmSystemTools::ReplaceString(line, "LIBRARY_OUTPUT_PATH",
                                 removeQuotes(
                                   cmSystemTools::ConvertToOutputPath(libPath.c_str())).c_str());
    cmSystemTools::ReplaceString(line, "EXECUTABLE_OUTPUT_PATH",
                                 removeQuotes(
                                   cmSystemTools::ConvertToOutputPath(exePath.c_str())).c_str());
    cmSystemTools::ReplaceString(line, 
                                 "EXTRA_DEFINES", 
                                 m_Makefile->GetDefineFlags());
    cmGlobalGenerator* gen = this->GetGlobalGenerator();
    // store flags for each configuration
    std::string flags = " ";
    std::string flagsRelease = " ";
    std::string flagsMinSize = " ";
    std::string flagsDebug = " ";
    std::string flagsDebugRel = " ";
    // if CXX is on and the target contains cxx code then add the cxx flags
    if ( gen->GetLanguageEnabled("CXX") && target.HasCxx() )
      {
      flagsRelease = m_Makefile->GetDefinition("CMAKE_CXX_FLAGS_RELEASE");
      flagsRelease += " -DCMAKE_INTDIR=\\\"Release\\\" ";
      flagsMinSize = m_Makefile->GetDefinition("CMAKE_CXX_FLAGS_MINSIZEREL");
      flagsMinSize += " -DCMAKE_INTDIR=\\\"MinSizeRel\\\" ";
      flagsDebug = m_Makefile->GetDefinition("CMAKE_CXX_FLAGS_DEBUG");
      flagsDebug += " -DCMAKE_INTDIR=\\\"Debug\\\" ";
      flagsDebugRel = m_Makefile->GetDefinition("CMAKE_CXX_FLAGS_RELWITHDEBINFO");
      flagsDebugRel += " -DCMAKE_INTDIR=\\\"RelWithDebInfo\\\" ";
      flags = " ";
      flags = m_Makefile->GetDefinition("CMAKE_CXX_FLAGS");
      }
    // if C and the target is not CXX
    else if(gen->GetLanguageEnabled("C") && !target.HasCxx())
      {
      flagsRelease += m_Makefile->GetDefinition("CMAKE_C_FLAGS_RELEASE");
      flagsRelease += " -DCMAKE_INTDIR=\\\"Release\\\"";
      flagsMinSize += m_Makefile->GetDefinition("CMAKE_C_FLAGS_MINSIZEREL");
      flagsMinSize += " -DCMAKE_INTDIR=\\\"MinSizeRel\\\"";
      flagsDebug += m_Makefile->GetDefinition("CMAKE_C_FLAGS_DEBUG");
      flagsDebug += " -DCMAKE_INTDIR=\\\"Debug\\\"";
      flagsDebugRel += m_Makefile->GetDefinition("CMAKE_C_FLAGS_RELWITHDEBINFO");
      flagsDebugRel += " -DCMAKE_INTDIR=\\\"RelWithDebInfo\\\"";
      flags = " ";
      flags = m_Makefile->GetDefinition("CMAKE_C_FLAGS");
      }
    // The template files have CXX FLAGS in them, that need to be replaced.
    // There are not separate CXX and C template files, so we use the same
    // variable names.   The previous code sets up flags* variables to contain
    // the correct C or CXX flags
    cmSystemTools::ReplaceString(line, "CMAKE_CXX_FLAGS_RELEASE", flagsRelease.c_str());
    cmSystemTools::ReplaceString(line, "CMAKE_CXX_FLAGS_MINSIZEREL", flagsMinSize.c_str());
    cmSystemTools::ReplaceString(line, "CMAKE_CXX_FLAGS_DEBUG", flagsDebug.c_str());
    cmSystemTools::ReplaceString(line,"CMAKE_CXX_FLAGS_RELWITHDEBINFO", flagsDebugRel.c_str());
    cmSystemTools::ReplaceString(line, "CMAKE_CXX_FLAGS", flags.c_str());
    fout << line.c_str() << std::endl;
    }
}

void cmLocalVisualStudio6Generator::WriteDSPFooter(std::ostream& fout)
{  
  std::ifstream fin(m_DSPFooterTemplate.c_str());
  if(!fin)
    {
    cmSystemTools::Error("Error Reading ",
                         m_DSPFooterTemplate.c_str());
    }
  std::string line;
  while(cmSystemTools::GetLineFromStream(fin, line))
    {
    fout << line << std::endl;
    }
}
