/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
#include "cmLocalGenerator.h"

#include "cmComputeLinkInformation.h"
#include "cmGeneratedFileStream.h"
#include "cmGlobalGenerator.h"
#include "cmInstallGenerator.h"
#include "cmInstallFilesGenerator.h"
#include "cmGeneratorExpressionEvaluationFile.h"
#include "cmInstallScriptGenerator.h"
#include "cmInstallTargetGenerator.h"
#include "cmMakefile.h"
#include "cmSourceFile.h"
#include "cmTest.h"
#include "cmTestGenerator.h"
#include "cmCustomCommandGenerator.h"
#include "cmVersion.h"
#include "cmake.h"
#include "cmAlgorithms.h"

#if defined(CMAKE_BUILD_WITH_CMAKE)
# define CM_LG_ENCODE_OBJECT_NAMES
# include <cmsys/MD5.h>
#endif

#include <ctype.h> // for isalpha

#include <assert.h>

#if defined(__HAIKU__)
#include <FindDirectory.h>
#include <StorageDefs.h>
#endif

cmLocalGenerator::cmLocalGenerator(cmGlobalGenerator* gg,
                                   cmMakefile* makefile)
  : cmOutputConverter(makefile->GetStateSnapshot()),
    StateSnapshot(makefile->GetStateSnapshot())
{
  this->GlobalGenerator = gg;

  this->Makefile = makefile;

  this->EmitUniversalBinaryFlags = true;
  this->BackwardsCompatibility = 0;
  this->BackwardsCompatibilityFinal = false;

  this->ComputeObjectMaxPath();
}

cmLocalGenerator::~cmLocalGenerator()
{
}

void cmLocalGenerator::IssueMessage(cmake::MessageType t,
                                    std::string const& text) const
{
  cmListFileContext lfc;
  lfc.FilePath = this->StateSnapshot.GetDirectory().GetCurrentSource();
  lfc.FilePath += "/CMakeLists.txt";

  if(!this->GlobalGenerator->GetCMakeInstance()->GetIsInTryCompile())
    {
    cmOutputConverter converter(this->StateSnapshot);
    lfc.FilePath = converter.Convert(lfc.FilePath, cmLocalGenerator::HOME);
    }
  lfc.Line = 0;
  this->GlobalGenerator->GetCMakeInstance()->IssueMessage(t, text, lfc);
}

//----------------------------------------------------------------------------
void cmLocalGenerator::ComputeObjectMaxPath()
{
  // Choose a maximum object file name length.
#if defined(_WIN32) || defined(__CYGWIN__)
  this->ObjectPathMax = 250;
#else
  this->ObjectPathMax = 1000;
#endif
  const char* plen = this->Makefile->GetDefinition("CMAKE_OBJECT_PATH_MAX");
  if(plen && *plen)
    {
    unsigned int pmax;
    if(sscanf(plen, "%u", &pmax) == 1)
      {
      if(pmax >= 128)
        {
        this->ObjectPathMax = pmax;
        }
      else
        {
        std::ostringstream w;
        w << "CMAKE_OBJECT_PATH_MAX is set to " << pmax
          << ", which is less than the minimum of 128.  "
          << "The value will be ignored.";
        this->IssueMessage(cmake::AUTHOR_WARNING, w.str());
        }
      }
    else
      {
      std::ostringstream w;
      w << "CMAKE_OBJECT_PATH_MAX is set to \"" << plen
        << "\", which fails to parse as a positive integer.  "
        << "The value will be ignored.";
      this->IssueMessage(cmake::AUTHOR_WARNING, w.str());
      }
    }
  this->ObjectMaxPathViolations.clear();
}

void cmLocalGenerator::TraceDependencies()
{
  std::vector<std::string> configs;
  this->Makefile->GetConfigurations(configs);
  if (configs.empty())
    {
    configs.push_back("");
    }
  for(std::vector<std::string>::const_iterator ci = configs.begin();
      ci != configs.end(); ++ci)
    {
    this->GlobalGenerator->CreateEvaluationSourceFiles(*ci);
    }
  // Generate the rule files for each target.
  cmGeneratorTargetsType targets = this->GetGeneratorTargets();
  for(cmGeneratorTargetsType::iterator t = targets.begin();
      t != targets.end(); ++t)
    {
    if (t->second->Target->IsImported()
        || t->second->GetType() == cmState::INTERFACE_LIBRARY)
      {
      continue;
      }
    t->second->TraceDependencies();
    }
}

void cmLocalGenerator::GenerateTestFiles()
{
  if ( !this->Makefile->IsOn("CMAKE_TESTING_ENABLED") )
    {
    return;
    }

  // Compute the set of configurations.
  std::vector<std::string> configurationTypes;
  const std::string& config =
    this->Makefile->GetConfigurations(configurationTypes, false);

  std::string file =
      this->StateSnapshot.GetDirectory().GetCurrentBinary();
  file += "/";
  file += "CTestTestfile.cmake";

  cmGeneratedFileStream fout(file.c_str());
  fout.SetCopyIfDifferent(true);

  fout << "# CMake generated Testfile for " << std::endl
       << "# Source directory: "
       << this->StateSnapshot.GetDirectory().GetCurrentSource()
       << std::endl
       << "# Build directory: "
       << this->StateSnapshot.GetDirectory().GetCurrentBinary()
       << std::endl
       << "# " << std::endl
       << "# This file includes the relevant testing commands "
       << "required for " << std::endl
       << "# testing this directory and lists subdirectories to "
       << "be tested as well." << std::endl;

  const char* testIncludeFile =
    this->Makefile->GetProperty("TEST_INCLUDE_FILE");
  if ( testIncludeFile )
    {
    fout << "include(\"" << testIncludeFile << "\")" << std::endl;
    }

  // Ask each test generator to write its code.
  std::vector<cmTestGenerator*> const&
    testers = this->Makefile->GetTestGenerators();
  for(std::vector<cmTestGenerator*>::const_iterator gi = testers.begin();
      gi != testers.end(); ++gi)
    {
    (*gi)->Compute(this);
    (*gi)->Generate(fout, config, configurationTypes);
    }
  size_t i;
  std::vector<cmState::Snapshot> children
      = this->Makefile->GetStateSnapshot().GetChildren();
  for(i = 0; i < children.size(); ++i)
    {
    // TODO: Use add_subdirectory instead?
    fout << "subdirs(";
    std::string outP = children[i].GetDirectory().GetCurrentBinary();
    fout << this->Convert(outP,START_OUTPUT);
    fout << ")" << std::endl;
    }
}

void cmLocalGenerator::CreateEvaluationFileOutputs(std::string const& config)
{
  std::vector<cmGeneratorExpressionEvaluationFile*> ef =
      this->Makefile->GetEvaluationFiles();
  for(std::vector<cmGeneratorExpressionEvaluationFile*>::const_iterator
      li = ef.begin(); li != ef.end(); ++li)
    {
    (*li)->CreateOutputFile(this, config);
    }
}

void cmLocalGenerator::ProcessEvaluationFiles(
    std::vector<std::string>& generatedFiles)
{
  std::vector<cmGeneratorExpressionEvaluationFile*> ef =
      this->Makefile->GetEvaluationFiles();
  for(std::vector<cmGeneratorExpressionEvaluationFile*>::const_iterator
      li = ef.begin();
      li != ef.end();
      ++li)
    {
    (*li)->Generate(this);
    if (cmSystemTools::GetFatalErrorOccured())
      {
      return;
      }
    std::vector<std::string> files = (*li)->GetFiles();
    std::sort(files.begin(), files.end());

    std::vector<std::string> intersection;
    std::set_intersection(files.begin(), files.end(),
                          generatedFiles.begin(), generatedFiles.end(),
                          std::back_inserter(intersection));
    if (!intersection.empty())
      {
      cmSystemTools::Error("Files to be generated by multiple different "
        "commands: ", cmWrap('"', intersection, '"', " ").c_str());
      return;
      }

    generatedFiles.insert(generatedFiles.end(), files.begin(), files.end());
    std::vector<std::string>::iterator newIt =
        generatedFiles.end() - files.size();
    std::inplace_merge(generatedFiles.begin(), newIt, generatedFiles.end());
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::GenerateInstallRules()
{
  // Compute the install prefix.
  const char* prefix = this->Makefile->GetDefinition("CMAKE_INSTALL_PREFIX");
#if defined(_WIN32) && !defined(__CYGWIN__)
  std::string prefix_win32;
  if(!prefix)
    {
    if(!cmSystemTools::GetEnv("SystemDrive", prefix_win32))
      {
      prefix_win32 = "C:";
      }
    const char* project_name = this->Makefile->GetDefinition("PROJECT_NAME");
    if(project_name && project_name[0])
      {
      prefix_win32 += "/Program Files/";
      prefix_win32 += project_name;
      }
    else
      {
      prefix_win32 += "/InstalledCMakeProject";
      }
    prefix = prefix_win32.c_str();
    }
#elif defined(__HAIKU__)
  char dir[B_PATH_NAME_LENGTH];
  if (!prefix)
    {
    if (find_directory(B_SYSTEM_DIRECTORY, -1, false, dir, sizeof(dir))
        == B_OK)
      {
      prefix = dir;
      }
    else
      {
      prefix = "/boot/system";
      }
    }
#else
  if (!prefix)
    {
    prefix = "/usr/local";
    }
#endif
  if (const char *stagingPrefix
                  = this->Makefile->GetDefinition("CMAKE_STAGING_PREFIX"))
    {
    prefix = stagingPrefix;
    }

  // Compute the set of configurations.
  std::vector<std::string> configurationTypes;
  const std::string& config =
    this->Makefile->GetConfigurations(configurationTypes, false);

  // Choose a default install configuration.
  std::string default_config = config;
  const char* default_order[] = {"RELEASE", "MINSIZEREL",
                                 "RELWITHDEBINFO", "DEBUG", 0};
  for(const char** c = default_order; *c && default_config.empty(); ++c)
    {
    for(std::vector<std::string>::iterator i = configurationTypes.begin();
        i != configurationTypes.end(); ++i)
      {
      if(cmSystemTools::UpperCase(*i) == *c)
        {
        default_config = *i;
        }
      }
    }
  if(default_config.empty() && !configurationTypes.empty())
    {
    default_config = configurationTypes[0];
    }

  // Create the install script file.
  std::string file =
      this->StateSnapshot.GetDirectory().GetCurrentBinary();
  std::string homedir = this->GetState()->GetBinaryDirectory();
  int toplevel_install = 0;
  if (file == homedir)
    {
    toplevel_install = 1;
    }
  file += "/cmake_install.cmake";
  cmGeneratedFileStream fout(file.c_str());
  fout.SetCopyIfDifferent(true);

  // Write the header.
  fout << "# Install script for directory: "
       << this->StateSnapshot.GetDirectory().GetCurrentSource()
       << std::endl << std::endl;
  fout << "# Set the install prefix" << std::endl
       << "if(NOT DEFINED CMAKE_INSTALL_PREFIX)" << std::endl
       << "  set(CMAKE_INSTALL_PREFIX \"" << prefix << "\")" << std::endl
       << "endif()" << std::endl
       << "string(REGEX REPLACE \"/$\" \"\" CMAKE_INSTALL_PREFIX "
       << "\"${CMAKE_INSTALL_PREFIX}\")" << std::endl
       << std::endl;

  // Write support code for generating per-configuration install rules.
  fout <<
    "# Set the install configuration name.\n"
    "if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)\n"
    "  if(BUILD_TYPE)\n"
    "    string(REGEX REPLACE \"^[^A-Za-z0-9_]+\" \"\"\n"
    "           CMAKE_INSTALL_CONFIG_NAME \"${BUILD_TYPE}\")\n"
    "  else()\n"
    "    set(CMAKE_INSTALL_CONFIG_NAME \"" << default_config << "\")\n"
    "  endif()\n"
    "  message(STATUS \"Install configuration: "
    "\\\"${CMAKE_INSTALL_CONFIG_NAME}\\\"\")\n"
    "endif()\n"
    "\n";

  // Write support code for dealing with component-specific installs.
  fout <<
    "# Set the component getting installed.\n"
    "if(NOT CMAKE_INSTALL_COMPONENT)\n"
    "  if(COMPONENT)\n"
    "    message(STATUS \"Install component: \\\"${COMPONENT}\\\"\")\n"
    "    set(CMAKE_INSTALL_COMPONENT \"${COMPONENT}\")\n"
    "  else()\n"
    "    set(CMAKE_INSTALL_COMPONENT)\n"
    "  endif()\n"
    "endif()\n"
    "\n";

  // Copy user-specified install options to the install code.
  if(const char* so_no_exe =
     this->Makefile->GetDefinition("CMAKE_INSTALL_SO_NO_EXE"))
    {
    fout <<
      "# Install shared libraries without execute permission?\n"
      "if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)\n"
      "  set(CMAKE_INSTALL_SO_NO_EXE \"" << so_no_exe << "\")\n"
      "endif()\n"
      "\n";
    }

  // Ask each install generator to write its code.
  std::vector<cmInstallGenerator*> const& installers =
    this->Makefile->GetInstallGenerators();
  for(std::vector<cmInstallGenerator*>::const_iterator
        gi = installers.begin();
      gi != installers.end(); ++gi)
    {
    (*gi)->Generate(fout, config, configurationTypes);
    }

  // Write rules from old-style specification stored in targets.
  this->GenerateTargetInstallRules(fout, config, configurationTypes);

  // Include install scripts from subdirectories.
  std::vector<cmState::Snapshot> children
      = this->Makefile->GetStateSnapshot().GetChildren();
  if(!children.empty())
    {
    fout << "if(NOT CMAKE_INSTALL_LOCAL_ONLY)\n";
    fout << "  # Include the install script for each subdirectory.\n";
    for(std::vector<cmState::Snapshot>::const_iterator
          ci = children.begin(); ci != children.end(); ++ci)
      {
      if(!ci->GetDirectory().GetPropertyAsBool("EXCLUDE_FROM_ALL"))
        {
        std::string odir = ci->GetDirectory().GetCurrentBinary();
        cmSystemTools::ConvertToUnixSlashes(odir);
        fout << "  include(\"" <<  odir
             << "/cmake_install.cmake\")" << std::endl;
        }
      }
    fout << "\n";
    fout << "endif()\n\n";
    }

  // Record the install manifest.
  if ( toplevel_install )
    {
    fout <<
      "if(CMAKE_INSTALL_COMPONENT)\n"
      "  set(CMAKE_INSTALL_MANIFEST \"install_manifest_"
      "${CMAKE_INSTALL_COMPONENT}.txt\")\n"
      "else()\n"
      "  set(CMAKE_INSTALL_MANIFEST \"install_manifest.txt\")\n"
      "endif()\n"
      "\n"
      "string(REPLACE \";\" \"\\n\" CMAKE_INSTALL_MANIFEST_CONTENT\n"
      "       \"${CMAKE_INSTALL_MANIFEST_FILES}\")\n"
      "file(WRITE \"" << homedir << "/${CMAKE_INSTALL_MANIFEST}\"\n"
      "     \"${CMAKE_INSTALL_MANIFEST_CONTENT}\")\n";
    }
}


void cmLocalGenerator::AddGeneratorTarget(cmTarget* t, cmGeneratorTarget* gt)
{
  this->GeneratorTargets[t] = gt;
  this->GetGlobalGenerator()->AddGeneratorTarget(t, gt);
}

//----------------------------------------------------------------------------
void cmLocalGenerator::ComputeTargetManifest()
{
  // Collect the set of configuration types.
  std::vector<std::string> configNames;
  this->Makefile->GetConfigurations(configNames);
  if(configNames.empty())
    {
    configNames.push_back("");
    }

  // Add our targets to the manifest for each configuration.
  cmGeneratorTargetsType targets = this->GetGeneratorTargets();
  for(cmGeneratorTargetsType::iterator t = targets.begin();
      t != targets.end(); ++t)
    {
    cmGeneratorTarget& target = *t->second;
    if (target.GetType() == cmState::INTERFACE_LIBRARY)
      {
      continue;
      }
    if (target.Target->IsImported())
      {
      continue;
      }
    for(std::vector<std::string>::iterator ci = configNames.begin();
        ci != configNames.end(); ++ci)
      {
      const char* config = ci->c_str();
      target.ComputeTargetManifest(config);
      }
    }
}

cmState* cmLocalGenerator::GetState() const
{
  return this->GlobalGenerator->GetCMakeInstance()->GetState();
}

cmState::Snapshot cmLocalGenerator::GetStateSnapshot() const
{
  return this->Makefile->GetStateSnapshot();
}

// List of variables that are replaced when
// rules are expanced.  These variables are
// replaced in the form <var> with GetSafeDefinition(var).
// ${LANG} is replaced in the variable first with all enabled
// languages.
static const char* ruleReplaceVars[] =
{
  "CMAKE_${LANG}_COMPILER",
  "CMAKE_SHARED_LIBRARY_CREATE_${LANG}_FLAGS",
  "CMAKE_SHARED_MODULE_CREATE_${LANG}_FLAGS",
  "CMAKE_SHARED_MODULE_${LANG}_FLAGS",
  "CMAKE_SHARED_LIBRARY_${LANG}_FLAGS",
  "CMAKE_${LANG}_LINK_FLAGS",
  "CMAKE_SHARED_LIBRARY_SONAME_${LANG}_FLAG",
  "CMAKE_${LANG}_ARCHIVE",
  "CMAKE_AR",
  "CMAKE_CURRENT_SOURCE_DIR",
  "CMAKE_CURRENT_BINARY_DIR",
  "CMAKE_RANLIB",
  "CMAKE_LINKER",
  "CMAKE_CL_SHOWINCLUDES_PREFIX",
  0
};

std::string
cmLocalGenerator::ExpandRuleVariable(std::string const& variable,
                                     const RuleVariables& replaceValues)
{
  if(replaceValues.LinkFlags)
    {
    if(variable == "LINK_FLAGS")
      {
      return replaceValues.LinkFlags;
      }
    }
  if(replaceValues.Manifests)
    {
    if(variable == "MANIFESTS")
      {
      return replaceValues.Manifests;
      }
    }
  if(replaceValues.Flags)
    {
    if(variable == "FLAGS")
      {
      return replaceValues.Flags;
      }
    }

  if(replaceValues.Source)
    {
    if(variable == "SOURCE")
      {
      return replaceValues.Source;
      }
    }
  if(replaceValues.PreprocessedSource)
    {
    if(variable == "PREPROCESSED_SOURCE")
      {
      return replaceValues.PreprocessedSource;
      }
    }
  if(replaceValues.AssemblySource)
    {
    if(variable == "ASSEMBLY_SOURCE")
      {
      return replaceValues.AssemblySource;
      }
    }
  if(replaceValues.Object)
    {
    if(variable == "OBJECT")
      {
      return replaceValues.Object;
      }
    }
  if(replaceValues.ObjectDir)
    {
    if(variable == "OBJECT_DIR")
      {
      return replaceValues.ObjectDir;
      }
    }
  if(replaceValues.ObjectFileDir)
    {
    if(variable == "OBJECT_FILE_DIR")
      {
      return replaceValues.ObjectFileDir;
      }
    }
  if(replaceValues.Objects)
    {
    if(variable == "OBJECTS")
      {
      return replaceValues.Objects;
      }
    }
  if(replaceValues.ObjectsQuoted)
    {
    if(variable == "OBJECTS_QUOTED")
      {
      return replaceValues.ObjectsQuoted;
      }
    }
  if(replaceValues.Defines && variable == "DEFINES")
    {
    return replaceValues.Defines;
    }
  if(replaceValues.Includes && variable == "INCLUDES")
    {
    return replaceValues.Includes;
    }
  if(replaceValues.TargetPDB )
    {
    if(variable == "TARGET_PDB")
      {
      return replaceValues.TargetPDB;
      }
    }
  if(replaceValues.TargetCompilePDB)
    {
    if(variable == "TARGET_COMPILE_PDB")
      {
      return replaceValues.TargetCompilePDB;
      }
    }
  if(replaceValues.DependencyFile )
    {
    if(variable == "DEP_FILE")
      {
      return replaceValues.DependencyFile;
      }
    }

  if(replaceValues.Target)
    {
    if(variable == "TARGET_QUOTED")
      {
      std::string targetQuoted = replaceValues.Target;
      if(!targetQuoted.empty() && targetQuoted[0] != '\"')
        {
        targetQuoted = '\"';
        targetQuoted += replaceValues.Target;
        targetQuoted += '\"';
        }
      return targetQuoted;
      }
    if(variable == "TARGET_UNQUOTED")
      {
      std::string unquoted = replaceValues.Target;
      std::string::size_type sz = unquoted.size();
      if(sz > 2 && unquoted[0] == '\"' && unquoted[sz-1] == '\"')
        {
        unquoted = unquoted.substr(1, sz-2);
        }
      return unquoted;
      }
    if(replaceValues.LanguageCompileFlags)
      {
      if(variable == "LANGUAGE_COMPILE_FLAGS")
        {
        return replaceValues.LanguageCompileFlags;
        }
      }
    if(replaceValues.Target)
      {
      if(variable == "TARGET")
        {
        return replaceValues.Target;
        }
      }
    if(variable == "TARGET_IMPLIB")
      {
      return this->TargetImplib;
      }
    if(variable == "TARGET_VERSION_MAJOR")
      {
      if(replaceValues.TargetVersionMajor)
        {
        return replaceValues.TargetVersionMajor;
        }
      else
        {
        return "0";
        }
      }
    if(variable == "TARGET_VERSION_MINOR")
      {
      if(replaceValues.TargetVersionMinor)
        {
        return replaceValues.TargetVersionMinor;
        }
      else
        {
        return "0";
        }
      }
    if(replaceValues.Target)
      {
      if(variable == "TARGET_BASE")
        {
        // Strip the last extension off the target name.
        std::string targetBase = replaceValues.Target;
        std::string::size_type pos = targetBase.rfind(".");
        if(pos != targetBase.npos)
          {
        return targetBase.substr(0, pos);
          }
        else
          {
          return targetBase;
          }
        }
      }
    }
  if(variable == "TARGET_SONAME" || variable == "SONAME_FLAG" ||
     variable == "TARGET_INSTALLNAME_DIR")
    {
    // All these variables depend on TargetSOName
    if(replaceValues.TargetSOName)
      {
      if(variable == "TARGET_SONAME")
        {
        return replaceValues.TargetSOName;
        }
      if(variable == "SONAME_FLAG" && replaceValues.SONameFlag)
        {
        return replaceValues.SONameFlag;
        }
      if(replaceValues.TargetInstallNameDir &&
         variable == "TARGET_INSTALLNAME_DIR")
        {
        return replaceValues.TargetInstallNameDir;
        }
      }
    return "";
    }
  if(replaceValues.LinkLibraries)
    {
    if(variable == "LINK_LIBRARIES")
      {
      return replaceValues.LinkLibraries;
      }
    }
  if(replaceValues.Language)
    {
    if(variable == "LANGUAGE")
      {
      return replaceValues.Language;
      }
    }
  if(replaceValues.CMTarget)
    {
    if(variable == "TARGET_NAME")
      {
      return replaceValues.CMTarget->GetName();
      }
    if(variable == "TARGET_TYPE")
      {
      return cmState::GetTargetTypeName(replaceValues.CMTarget->GetType());
      }
    }
  if(replaceValues.Output)
    {
    if(variable == "OUTPUT")
      {
      return replaceValues.Output;
      }
    }
  if(variable == "CMAKE_COMMAND")
    {
    return this->Convert(cmSystemTools::GetCMakeCommand(), FULL, SHELL);
    }
  std::vector<std::string> enabledLanguages =
      this->GetState()->GetEnabledLanguages();
  // loop over language specific replace variables
  int pos = 0;
  while(ruleReplaceVars[pos])
    {
    for(std::vector<std::string>::iterator i = enabledLanguages.begin();
        i != enabledLanguages.end(); ++i)
      {
      const char* lang = i->c_str();
      std::string actualReplace = ruleReplaceVars[pos];
      // If this is the compiler then look for the extra variable
      // _COMPILER_ARG1 which must be the first argument to the compiler
      const char* compilerArg1 = 0;
      const char* compilerTarget = 0;
      const char* compilerOptionTarget = 0;
      const char* compilerExternalToolchain = 0;
      const char* compilerOptionExternalToolchain = 0;
      const char* compilerSysroot = 0;
      const char* compilerOptionSysroot = 0;
      if(actualReplace == "CMAKE_${LANG}_COMPILER")
        {
        std::string arg1 = actualReplace + "_ARG1";
        cmSystemTools::ReplaceString(arg1, "${LANG}", lang);
        compilerArg1 = this->Makefile->GetDefinition(arg1);
        compilerTarget
              = this->Makefile->GetDefinition(
                std::string("CMAKE_") + lang + "_COMPILER_TARGET");
        compilerOptionTarget
              = this->Makefile->GetDefinition(
                std::string("CMAKE_") + lang +
                                          "_COMPILE_OPTIONS_TARGET");
        compilerExternalToolchain
              = this->Makefile->GetDefinition(
                std::string("CMAKE_") + lang +
                                    "_COMPILER_EXTERNAL_TOOLCHAIN");
        compilerOptionExternalToolchain
              = this->Makefile->GetDefinition(
                std::string("CMAKE_") + lang +
                              "_COMPILE_OPTIONS_EXTERNAL_TOOLCHAIN");
        compilerSysroot
              = this->Makefile->GetDefinition("CMAKE_SYSROOT");
        compilerOptionSysroot
              = this->Makefile->GetDefinition(
                std::string("CMAKE_") + lang +
                              "_COMPILE_OPTIONS_SYSROOT");
        }
      if(actualReplace.find("${LANG}") != actualReplace.npos)
        {
        cmSystemTools::ReplaceString(actualReplace, "${LANG}", lang);
        }
      if(actualReplace == variable)
        {
        std::string replace =
          this->Makefile->GetSafeDefinition(variable);
        // if the variable is not a FLAG then treat it like a path
        if(variable.find("_FLAG") == variable.npos)
          {
          std::string ret = this->ConvertToOutputForExisting(replace);
          // if there is a required first argument to the compiler add it
          // to the compiler string
          if(compilerArg1)
            {
            ret += " ";
            ret += compilerArg1;
            }
          if (compilerTarget && compilerOptionTarget)
            {
            ret += " ";
            ret += compilerOptionTarget;
            ret += compilerTarget;
            }
          if (compilerExternalToolchain && compilerOptionExternalToolchain)
            {
            ret += " ";
            ret += compilerOptionExternalToolchain;
            ret += this->EscapeForShell(compilerExternalToolchain, true);
            }
          if (compilerSysroot && compilerOptionSysroot)
            {
            ret += " ";
            ret += compilerOptionSysroot;
            ret += this->EscapeForShell(compilerSysroot, true);
            }
          return ret;
          }
        return replace;
        }
      }
    pos++;
    }
  return variable;
}


void
cmLocalGenerator::ExpandRuleVariables(std::string& s,
                                      const RuleVariables& replaceValues)
{
  if(replaceValues.RuleLauncher)
    {
    this->InsertRuleLauncher(s, replaceValues.CMTarget,
                             replaceValues.RuleLauncher);
    }
  std::string::size_type start = s.find('<');
  // no variables to expand
  if(start == s.npos)
    {
    return;
    }
  std::string::size_type pos = 0;
  std::string expandedInput;
  while(start != s.npos && start < s.size()-2)
    {
    std::string::size_type end = s.find('>', start);
    // if we find a < with no > we are done
    if(end == s.npos)
      {
      return;
      }
    char c = s[start+1];
    // if the next char after the < is not A-Za-z then
    // skip it and try to find the next < in the string
    if(!isalpha(c))
      {
      start = s.find('<', start+1);
      }
    else
      {
      // extract the var
      std::string var = s.substr(start+1,  end - start-1);
      std::string replace = this->ExpandRuleVariable(var,
                                                     replaceValues);
      expandedInput += s.substr(pos, start-pos);
      expandedInput += replace;
      // move to next one
      start = s.find('<', start+var.size()+2);
      pos = end+1;
      }
    }
  // add the rest of the input
  expandedInput += s.substr(pos, s.size()-pos);
  s = expandedInput;
}

//----------------------------------------------------------------------------
const char* cmLocalGenerator::GetRuleLauncher(cmTarget* target,
                                              const std::string& prop)
{
  if(target)
    {
    return target->GetProperty(prop);
    }
  else
    {
    return this->Makefile->GetProperty(prop);
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::InsertRuleLauncher(std::string& s, cmTarget* target,
                                          const std::string& prop)
{
  if(const char* val = this->GetRuleLauncher(target, prop))
    {
    std::ostringstream wrapped;
    wrapped << val << " " << s;
    s = wrapped.str();
    }
}

//----------------------------------------------------------------------------
std::string
cmLocalGenerator::ConvertToIncludeReference(std::string const& path,
                                            OutputFormat format,
                                            bool forceFullPaths)
{
  return this->ConvertToOutputForExisting(
    path, forceFullPaths? FULL : START_OUTPUT, format);
}

//----------------------------------------------------------------------------
std::string cmLocalGenerator::GetIncludeFlags(
                                     const std::vector<std::string> &includes,
                                     cmGeneratorTarget* target,
                                     const std::string& lang,
                                     bool forceFullPaths,
                                     bool forResponseFile,
                                     const std::string& config)
{
  if(lang.empty())
    {
    return "";
    }

  OutputFormat shellFormat = forResponseFile? RESPONSE : SHELL;
  std::ostringstream includeFlags;

  std::string flagVar = "CMAKE_INCLUDE_FLAG_";
  flagVar += lang;
  const char* includeFlag =
    this->Makefile->GetSafeDefinition(flagVar);
  flagVar = "CMAKE_INCLUDE_FLAG_SEP_";
  flagVar += lang;
  const char* sep = this->Makefile->GetDefinition(flagVar);
  bool quotePaths = false;
  if(this->Makefile->GetDefinition("CMAKE_QUOTE_INCLUDE_PATHS"))
    {
    quotePaths = true;
    }
  bool repeatFlag = true;
  // should the include flag be repeated like ie. -IA -IB
  if(!sep)
    {
    sep = " ";
    }
  else
    {
    // if there is a separator then the flag is not repeated but is only
    // given once i.e.  -classpath a:b:c
    repeatFlag = false;
    }

  // Support special system include flag if it is available and the
  // normal flag is repeated for each directory.
  std::string sysFlagVar = "CMAKE_INCLUDE_SYSTEM_FLAG_";
  sysFlagVar += lang;
  const char* sysIncludeFlag = 0;
  if(repeatFlag)
    {
    sysIncludeFlag = this->Makefile->GetDefinition(sysFlagVar);
    }

  std::string fwSearchFlagVar = "CMAKE_";
  fwSearchFlagVar += lang;
  fwSearchFlagVar += "_FRAMEWORK_SEARCH_FLAG";
  const char* fwSearchFlag =
    this->Makefile->GetDefinition(fwSearchFlagVar);

  std::string sysFwSearchFlagVar = "CMAKE_";
  sysFwSearchFlagVar += lang;
  sysFwSearchFlagVar += "_SYSTEM_FRAMEWORK_SEARCH_FLAG";
  const char* sysFwSearchFlag =
    this->Makefile->GetDefinition(sysFwSearchFlagVar);

  bool flagUsed = false;
  std::set<std::string> emitted;
#ifdef __APPLE__
  emitted.insert("/System/Library/Frameworks");
#endif
  std::vector<std::string>::const_iterator i;
  for(i = includes.begin(); i != includes.end(); ++i)
    {
    if(fwSearchFlag && *fwSearchFlag && this->Makefile->IsOn("APPLE")
       && cmSystemTools::IsPathToFramework(i->c_str()))
      {
      std::string frameworkDir = *i;
      frameworkDir += "/../";
      frameworkDir = cmSystemTools::CollapseFullPath(frameworkDir);
      if(emitted.insert(frameworkDir).second)
        {
        if (sysFwSearchFlag && target &&
            target->IsSystemIncludeDirectory(*i, config))
          {
          includeFlags << sysFwSearchFlag;
          }
        else
          {
          includeFlags << fwSearchFlag;
          }
        includeFlags << this->ConvertToOutputFormat(frameworkDir, shellFormat)
          << " ";
        }
      continue;
      }

    if(!flagUsed || repeatFlag)
      {
      if(sysIncludeFlag && target &&
         target->IsSystemIncludeDirectory(*i, config))
        {
        includeFlags << sysIncludeFlag;
        }
      else
        {
        includeFlags << includeFlag;
        }
      flagUsed = true;
      }
    std::string includePath =
      this->ConvertToIncludeReference(*i, shellFormat, forceFullPaths);
    if(quotePaths && !includePath.empty() && includePath[0] != '\"')
      {
      includeFlags << "\"";
      }
    includeFlags << includePath;
    if(quotePaths && !includePath.empty() && includePath[0] != '\"')
      {
      includeFlags << "\"";
      }
    includeFlags << sep;
    }
  std::string flags = includeFlags.str();
  // remove trailing separators
  if((sep[0] != ' ') && !flags.empty() && flags[flags.size()-1] == sep[0])
    {
    flags[flags.size()-1] = ' ';
    }
  return flags;
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddCompileDefinitions(std::set<std::string>& defines,
                                             cmTarget const* target,
                                             const std::string& config,
                                             const std::string& lang)
{
  std::vector<std::string> targetDefines;
  cmGeneratorTarget* gtgt = this->GlobalGenerator->GetGeneratorTarget(target);
  gtgt->GetCompileDefinitions(targetDefines, config, lang);
  this->AppendDefines(defines, targetDefines);
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddCompileOptions(
  std::string& flags, cmTarget* target,
  const std::string& lang, const std::string& config
  )
{
  std::string langFlagRegexVar = std::string("CMAKE_")+lang+"_FLAG_REGEX";

  cmGeneratorTarget* gtgt =
      this->GlobalGenerator->GetGeneratorTarget(target);

  if(const char* langFlagRegexStr =
     this->Makefile->GetDefinition(langFlagRegexVar))
    {
    // Filter flags acceptable to this language.
    cmsys::RegularExpression r(langFlagRegexStr);
    std::vector<std::string> opts;
    if(const char* targetFlags = target->GetProperty("COMPILE_FLAGS"))
      {
      cmSystemTools::ParseWindowsCommandLine(targetFlags, opts);
      }
    gtgt->GetCompileOptions(opts, config, lang);
    for(std::vector<std::string>::const_iterator i = opts.begin();
        i != opts.end(); ++i)
      {
      if(r.find(i->c_str()))
        {
        // (Re-)Escape this flag.  COMPILE_FLAGS were already parsed
        // as a command line above, and COMPILE_OPTIONS are escaped.
        this->AppendFlagEscape(flags, *i);
        }
      }
    }
  else
    {
    // Use all flags.
    if(const char* targetFlags = target->GetProperty("COMPILE_FLAGS"))
      {
      // COMPILE_FLAGS are not escaped for historical reasons.
      this->AppendFlags(flags, targetFlags);
      }
    std::vector<std::string> opts;
    gtgt->GetCompileOptions(opts, config, lang);
    for(std::vector<std::string>::const_iterator i = opts.begin();
        i != opts.end(); ++i)
      {
      // COMPILE_OPTIONS are escaped.
      this->AppendFlagEscape(flags, *i);
      }
    }
  std::vector<std::string> features;
  gtgt->GetCompileFeatures(features, config);
  for(std::vector<std::string>::const_iterator it = features.begin();
      it != features.end(); ++it)
    {
     if (!this->Makefile->AddRequiredTargetFeature(target, *it))
      {
      return;
      }
    }

  for(std::map<std::string, std::string>::const_iterator it
      = gtgt->GetMaxLanguageStandards().begin();
      it != gtgt->GetMaxLanguageStandards().end(); ++it)
    {
    const char* standard = target->GetProperty(it->first + "_STANDARD");
    if(!standard)
      {
      continue;
      }
    if (this->Makefile->IsLaterStandard(it->first, standard, it->second))
      {
      std::ostringstream e;
      e << "The COMPILE_FEATURES property of target \""
        << target->GetName() << "\" was evaluated when computing the link "
        "implementation, and the \"" << it->first << "_STANDARD\" was \""
        << it->second << "\" for that computation.  Computing the "
        "COMPILE_FEATURES based on the link implementation resulted in a "
        "higher \"" << it->first << "_STANDARD\" \"" << standard << "\".  "
        "This is not permitted. The COMPILE_FEATURES may not both depend on "
        "and be depended on by the link implementation." << std::endl;
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return;
      }
    }
  this->AddCompilerRequirementFlag(flags, target, lang);
}

//----------------------------------------------------------------------------
void cmLocalGenerator::GetIncludeDirectories(std::vector<std::string>& dirs,
                                             cmGeneratorTarget const* target,
                                             const std::string& lang,
                                             const std::string& config,
                                             bool stripImplicitInclDirs
                                            ) const
{
  // Need to decide whether to automatically include the source and
  // binary directories at the beginning of the include path.
  bool includeSourceDir = false;
  bool includeBinaryDir = false;

  // When automatic include directories are requested for a build then
  // include the source and binary directories at the beginning of the
  // include path to approximate include file behavior for an
  // in-source build.  This does not account for the case of a source
  // file in a subdirectory of the current source directory but we
  // cannot fix this because not all native build tools support
  // per-source-file include paths.
  if(this->Makefile->IsOn("CMAKE_INCLUDE_CURRENT_DIR"))
    {
    includeSourceDir = true;
    includeBinaryDir = true;
    }

  // Do not repeat an include path.
  std::set<std::string> emitted;

  // Store the automatic include paths.
  if(includeBinaryDir)
    {
    std::string binDir = this->StateSnapshot.GetDirectory().GetCurrentBinary();
    if(emitted.find(binDir) == emitted.end())
      {
      dirs.push_back(binDir);
      emitted.insert(binDir);
      }
    }
  if(includeSourceDir)
    {
    std::string srcDir = this->StateSnapshot.GetDirectory().GetCurrentSource();
    if(emitted.find(srcDir) == emitted.end())
      {
      dirs.push_back(srcDir);
      emitted.insert(srcDir);
      }
    }

  if(!target)
    {
    return;
    }

  std::string rootPath = this->Makefile->GetSafeDefinition("CMAKE_SYSROOT");

  std::vector<std::string> implicitDirs;
  // Load implicit include directories for this language.
  std::string impDirVar = "CMAKE_";
  impDirVar += lang;
  impDirVar += "_IMPLICIT_INCLUDE_DIRECTORIES";
  if(const char* value = this->Makefile->GetDefinition(impDirVar))
    {
    std::vector<std::string> impDirVec;
    cmSystemTools::ExpandListArgument(value, impDirVec);
    for(std::vector<std::string>::const_iterator i = impDirVec.begin();
        i != impDirVec.end(); ++i)
      {
      std::string d = rootPath + *i;
      cmSystemTools::ConvertToUnixSlashes(d);
      emitted.insert(d);
      if (!stripImplicitInclDirs)
        {
        implicitDirs.push_back(*i);
        }
      }
    }

  // Get the target-specific include directories.
  std::vector<std::string> includes;

  includes = target->GetIncludeDirectories(config, lang);

  // Support putting all the in-project include directories first if
  // it is requested by the project.
  if(this->Makefile->IsOn("CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE"))
    {
    const char* topSourceDir = this->GetState()->GetSourceDirectory();
    const char* topBinaryDir = this->GetState()->GetBinaryDirectory();
    for(std::vector<std::string>::const_iterator i = includes.begin();
        i != includes.end(); ++i)
      {
      // Emit this directory only if it is a subdirectory of the
      // top-level source or binary tree.
      if(cmSystemTools::ComparePath(*i, topSourceDir) ||
         cmSystemTools::ComparePath(*i, topBinaryDir) ||
         cmSystemTools::IsSubDirectory(*i, topSourceDir) ||
         cmSystemTools::IsSubDirectory(*i, topBinaryDir))
        {
        if(emitted.insert(*i).second)
          {
          dirs.push_back(*i);
          }
        }
      }
    }

  // Construct the final ordered include directory list.
  for(std::vector<std::string>::const_iterator i = includes.begin();
      i != includes.end(); ++i)
    {
    if(emitted.insert(*i).second)
      {
      dirs.push_back(*i);
      }
    }

  for(std::vector<std::string>::const_iterator i = implicitDirs.begin();
      i != implicitDirs.end(); ++i)
    {
    if(std::find(includes.begin(), includes.end(), *i) != includes.end())
      {
      dirs.push_back(*i);
      }
    }
}

void cmLocalGenerator::GetStaticLibraryFlags(std::string& flags,
                                             std::string const& config,
                                             cmTarget* target)
{
  this->AppendFlags(flags,
    this->Makefile->GetSafeDefinition("CMAKE_STATIC_LINKER_FLAGS"));
  if(!config.empty())
    {
    std::string name = "CMAKE_STATIC_LINKER_FLAGS_" + config;
    this->AppendFlags(flags, this->Makefile->GetSafeDefinition(name));
    }
  this->AppendFlags(flags, target->GetProperty("STATIC_LIBRARY_FLAGS"));
  if(!config.empty())
    {
    std::string name = "STATIC_LIBRARY_FLAGS_" + config;
    this->AppendFlags(flags, target->GetProperty(name));
    }
}

void cmLocalGenerator::GetTargetFlags(std::string& linkLibs,
                                 std::string& flags,
                                 std::string& linkFlags,
                                 std::string& frameworkPath,
                                 std::string& linkPath,
                                 cmGeneratorTarget* target,
                                 bool useWatcomQuote)
{
  std::string buildType =
    this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE");
  buildType = cmSystemTools::UpperCase(buildType);
  const char* libraryLinkVariable =
    "CMAKE_SHARED_LINKER_FLAGS"; // default to shared library

  switch(target->GetType())
    {
    case cmState::STATIC_LIBRARY:
      this->GetStaticLibraryFlags(linkFlags, buildType, target->Target);
      break;
    case cmState::MODULE_LIBRARY:
      libraryLinkVariable = "CMAKE_MODULE_LINKER_FLAGS";
    case cmState::SHARED_LIBRARY:
      {
      linkFlags = this->Makefile->GetSafeDefinition(libraryLinkVariable);
      linkFlags += " ";
      if(!buildType.empty())
        {
        std::string build = libraryLinkVariable;
        build += "_";
        build += buildType;
        linkFlags += this->Makefile->GetSafeDefinition(build);
        linkFlags += " ";
        }
      if(this->Makefile->IsOn("WIN32") &&
         !(this->Makefile->IsOn("CYGWIN") || this->Makefile->IsOn("MINGW")))
        {
        std::vector<cmSourceFile*> sources;
        target->GetSourceFiles(sources, buildType);
        for(std::vector<cmSourceFile*>::const_iterator i = sources.begin();
            i != sources.end(); ++i)
          {
          cmSourceFile* sf = *i;
          if(sf->GetExtension() == "def")
            {
            linkFlags +=
              this->Makefile->GetSafeDefinition("CMAKE_LINK_DEF_FILE_FLAG");
            linkFlags += this->Convert(sf->GetFullPath(),
                                       FULL, SHELL);
            linkFlags += " ";
            }
          }
        }
      const char* targetLinkFlags = target->GetProperty("LINK_FLAGS");
      if(targetLinkFlags)
        {
        linkFlags += targetLinkFlags;
        linkFlags += " ";
        }
      if(!buildType.empty())
        {
        std::string configLinkFlags = "LINK_FLAGS_";
        configLinkFlags += buildType;
        targetLinkFlags = target->GetProperty(configLinkFlags);
        if(targetLinkFlags)
          {
          linkFlags += targetLinkFlags;
          linkFlags += " ";
          }
        }
      this->OutputLinkLibraries(linkLibs, frameworkPath, linkPath,
                                *target, false, false, useWatcomQuote);
      }
      break;
    case cmState::EXECUTABLE:
      {
      linkFlags +=
        this->Makefile->GetSafeDefinition("CMAKE_EXE_LINKER_FLAGS");
      linkFlags += " ";
      if(!buildType.empty())
        {
        std::string build = "CMAKE_EXE_LINKER_FLAGS_";
        build += buildType;
        linkFlags += this->Makefile->GetSafeDefinition(build);
        linkFlags += " ";
        }
      std::string linkLanguage = target->GetLinkerLanguage(buildType);
      if(linkLanguage.empty())
        {
        cmSystemTools::Error
          ("CMake can not determine linker language for target: ",
           target->Target->GetName().c_str());
        return;
        }
      this->AddLanguageFlags(flags, linkLanguage, buildType);
      this->OutputLinkLibraries(linkLibs, frameworkPath, linkPath,
                                *target, false, false, useWatcomQuote);
      if(cmSystemTools::IsOn
         (this->Makefile->GetDefinition("BUILD_SHARED_LIBS")))
        {
        std::string sFlagVar = std::string("CMAKE_SHARED_BUILD_")
          + linkLanguage + std::string("_FLAGS");
        linkFlags += this->Makefile->GetSafeDefinition(sFlagVar);
        linkFlags += " ";
        }
      if ( target->GetPropertyAsBool("WIN32_EXECUTABLE") )
        {
        linkFlags +=
          this->Makefile->GetSafeDefinition("CMAKE_CREATE_WIN32_EXE");
        linkFlags += " ";
        }
      else
        {
        linkFlags +=
          this->Makefile->GetSafeDefinition("CMAKE_CREATE_CONSOLE_EXE");
        linkFlags += " ";
        }
      if (target->Target->IsExecutableWithExports())
        {
        std::string exportFlagVar = "CMAKE_EXE_EXPORTS_";
        exportFlagVar += linkLanguage;
        exportFlagVar += "_FLAG";

        linkFlags +=
          this->Makefile->GetSafeDefinition(exportFlagVar);
        linkFlags += " ";
        }
      const char* targetLinkFlags = target->GetProperty("LINK_FLAGS");
      if(targetLinkFlags)
        {
        linkFlags += targetLinkFlags;
        linkFlags += " ";
        }
      if(!buildType.empty())
        {
        std::string configLinkFlags = "LINK_FLAGS_";
        configLinkFlags += buildType;
        targetLinkFlags = target->GetProperty(configLinkFlags);
        if(targetLinkFlags)
          {
          linkFlags += targetLinkFlags;
          linkFlags += " ";
          }
        }
      }
      break;
    default:
      break;
    }
}

std::string cmLocalGenerator::ConvertToLinkReference(std::string const& lib,
                                                     OutputFormat format)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
  // Work-ardound command line parsing limitations in MSVC 6.0
  if(this->Makefile->IsOn("MSVC60"))
    {
    // Search for the last space.
    std::string::size_type pos = lib.rfind(' ');
    if(pos != lib.npos)
      {
      // Find the slash after the last space, if any.
      pos = lib.find('/', pos);

      // Convert the portion of the path with a space to a short path.
      std::string sp;
      if(cmSystemTools::GetShortPath(lib.substr(0, pos).c_str(), sp))
        {
        // Append the rest of the path with no space.
        sp += lib.substr(pos);

        // Convert to an output path.
        return this->Convert(sp.c_str(), NONE, format);
        }
      }
    }
#endif

  // Normal behavior.
  return this->Convert(lib, START_OUTPUT, format);
}

/**
 * Output the linking rules on a command line.  For executables,
 * targetLibrary should be a NULL pointer.  For libraries, it should point
 * to the name of the library.  This will not link a library against itself.
 */
void cmLocalGenerator::OutputLinkLibraries(std::string& linkLibraries,
                                           std::string& frameworkPath,
                                           std::string& linkPath,
                                           cmGeneratorTarget &tgt,
                                           bool relink,
                                           bool forResponseFile,
                                           bool useWatcomQuote)
{
  OutputFormat shellFormat = (forResponseFile) ? RESPONSE :
                             ((useWatcomQuote) ? WATCOMQUOTE : SHELL);
  bool escapeAllowMakeVars = !forResponseFile;
  std::ostringstream fout;
  std::string config = this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE");
  cmComputeLinkInformation* pcli = tgt.GetLinkInformation(config);
  if(!pcli)
    {
    return;
    }
  cmComputeLinkInformation& cli = *pcli;

  // Collect library linking flags command line options.
  std::string linkLibs;

  std::string linkLanguage = cli.GetLinkLanguage();

  std::string libPathFlag =
    this->Makefile->GetRequiredDefinition("CMAKE_LIBRARY_PATH_FLAG");
  std::string libPathTerminator =
    this->Makefile->GetSafeDefinition("CMAKE_LIBRARY_PATH_TERMINATOR");

  // Flags to link an executable to shared libraries.
  if (tgt.GetType() == cmState::EXECUTABLE &&
      this->StateSnapshot.GetState()->
        GetGlobalPropertyAsBool("TARGET_SUPPORTS_SHARED_LIBS"))
    {
    bool add_shlib_flags = false;
    switch(tgt.Target->GetPolicyStatusCMP0065())
      {
      case cmPolicies::WARN:
        if(!tgt.GetPropertyAsBool("ENABLE_EXPORTS") &&
           this->Makefile->PolicyOptionalWarningEnabled(
             "CMAKE_POLICY_WARNING_CMP0065"))
          {
          std::ostringstream w;
          w << cmPolicies::GetPolicyWarning(cmPolicies::CMP0065) << "\n"
            "For compatibility with older versions of CMake, "
            "additional flags may be added to export symbols on all "
            "executables regardless of thier ENABLE_EXPORTS property.";
          this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, w.str());
          }
      case cmPolicies::OLD:
        // OLD behavior is to always add the flags
        add_shlib_flags = true;
        break;
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
        this->Makefile->IssueMessage(
          cmake::FATAL_ERROR,
          cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0065)
          );
      case cmPolicies::NEW:
        // NEW behavior is to only add the flags if ENABLE_EXPORTS is on
        add_shlib_flags = tgt.GetPropertyAsBool("ENABLE_EXPORTS");
        break;
      }

    if(add_shlib_flags)
      {
      std::string linkFlagsVar = "CMAKE_SHARED_LIBRARY_LINK_";
      linkFlagsVar += linkLanguage;
      linkFlagsVar += "_FLAGS";
      linkLibs = this->Makefile->GetSafeDefinition(linkFlagsVar);
      linkLibs += " ";
      }
    }

  // Append the framework search path flags.
  std::string fwSearchFlagVar = "CMAKE_";
  fwSearchFlagVar += linkLanguage;
  fwSearchFlagVar += "_FRAMEWORK_SEARCH_FLAG";
  const char* fwSearchFlag =
    this->Makefile->GetDefinition(fwSearchFlagVar);
  if(fwSearchFlag && *fwSearchFlag)
    {
    std::vector<std::string> const& fwDirs = cli.GetFrameworkPaths();
    for(std::vector<std::string>::const_iterator fdi = fwDirs.begin();
        fdi != fwDirs.end(); ++fdi)
      {
      frameworkPath += fwSearchFlag;
      frameworkPath += this->Convert(*fdi, NONE, shellFormat);
      frameworkPath += " ";
      }
    }

  // Append the library search path flags.
  std::vector<std::string> const& libDirs = cli.GetDirectories();
  for(std::vector<std::string>::const_iterator libDir = libDirs.begin();
      libDir != libDirs.end(); ++libDir)
    {
    std::string libpath = this->ConvertToOutputForExisting(*libDir,
                                                           START_OUTPUT,
                                                           shellFormat);
    linkPath += " " + libPathFlag;
    linkPath += libpath;
    linkPath += libPathTerminator;
    linkPath += " ";
    }

  // Append the link items.
  typedef cmComputeLinkInformation::ItemVector ItemVector;
  ItemVector const& items = cli.GetItems();
  for(ItemVector::const_iterator li = items.begin(); li != items.end(); ++li)
    {
    if(li->Target && li->Target->GetType() == cmState::INTERFACE_LIBRARY)
      {
      continue;
      }
    if(li->IsPath)
      {
      linkLibs += this->ConvertToLinkReference(li->Value, shellFormat);
      }
    else
      {
      linkLibs += li->Value;
      }
    linkLibs += " ";
    }

  // Write the library flags to the build rule.
  fout << linkLibs;

  // Check what kind of rpath flags to use.
  if(cli.GetRuntimeSep().empty())
    {
    // Each rpath entry gets its own option ("-R a -R b -R c")
    std::vector<std::string> runtimeDirs;
    cli.GetRPath(runtimeDirs, relink);

    std::string rpath;
    for(std::vector<std::string>::iterator ri = runtimeDirs.begin();
        ri != runtimeDirs.end(); ++ri)
      {
      rpath += cli.GetRuntimeFlag();
      rpath += this->Convert(*ri, NONE, shellFormat);
      rpath += " ";
      }
    fout << rpath;
    }
  else
    {
    // All rpath entries are combined ("-Wl,-rpath,a:b:c").
    std::string rpath = cli.GetRPathString(relink);

    // Store the rpath option in the stream.
    if(!rpath.empty())
      {
      fout << cli.GetRuntimeFlag();
      fout << this->EscapeForShell(rpath, escapeAllowMakeVars);
      fout << " ";
      }
    }

  // Add the linker runtime search path if any.
  std::string rpath_link = cli.GetRPathLinkString();
  if(!cli.GetRPathLinkFlag().empty() && !rpath_link.empty())
    {
    fout << cli.GetRPathLinkFlag();
    fout << this->EscapeForShell(rpath_link, escapeAllowMakeVars);
    fout << " ";
    }

  // Add standard libraries for this language.
  std::string standardLibsVar = "CMAKE_";
  standardLibsVar += cli.GetLinkLanguage();
  standardLibsVar += "_STANDARD_LIBRARIES";
  if(const char* stdLibs =
     this->Makefile->GetDefinition(standardLibsVar))
    {
    fout << stdLibs << " ";
    }

  linkLibraries = fout.str();
}


//----------------------------------------------------------------------------
void cmLocalGenerator::AddArchitectureFlags(std::string& flags,
                                            cmGeneratorTarget const* target,
                                            const std::string& lang,
                                            const std::string& config)
{
  // Only add Mac OS X specific flags on Darwin platforms (OSX and iphone):
  if(!this->Makefile->IsOn("APPLE"))
    {
    return;
    }

  if(this->EmitUniversalBinaryFlags)
    {
    std::vector<std::string> archs;
    target->GetAppleArchs(config, archs);
    const char* sysroot = this->Makefile->GetDefinition("CMAKE_OSX_SYSROOT");
    if(sysroot && sysroot[0] == '/' && !sysroot[1])
      { sysroot = 0; }
    std::string sysrootFlagVar =
      std::string("CMAKE_") + lang + "_SYSROOT_FLAG";
    const char* sysrootFlag =
      this->Makefile->GetDefinition(sysrootFlagVar);
    const char* deploymentTarget =
      this->Makefile->GetDefinition("CMAKE_OSX_DEPLOYMENT_TARGET");
    std::string deploymentTargetFlagVar =
      std::string("CMAKE_") + lang + "_OSX_DEPLOYMENT_TARGET_FLAG";
    const char* deploymentTargetFlag =
      this->Makefile->GetDefinition(deploymentTargetFlagVar);
    if(!archs.empty() && !lang.empty() && (lang[0] =='C' || lang[0] == 'F'))
      {
      for(std::vector<std::string>::iterator i = archs.begin();
          i != archs.end(); ++i)
        {
        flags += " -arch ";
        flags += *i;
        }
      }

    if(sysrootFlag && *sysrootFlag && sysroot && *sysroot)
      {
      flags += " ";
      flags += sysrootFlag;
      flags += " ";
      flags += this->Convert(sysroot, NONE, SHELL);
      }

    if (deploymentTargetFlag && *deploymentTargetFlag &&
        deploymentTarget && *deploymentTarget)
      {
      flags += " ";
      flags += deploymentTargetFlag;
      flags += deploymentTarget;
      }
    }
}


//----------------------------------------------------------------------------
void cmLocalGenerator::AddLanguageFlags(std::string& flags,
                                        const std::string& lang,
                                        const std::string& config)
{
  // Add language-specific flags.
  std::string flagsVar = "CMAKE_";
  flagsVar += lang;
  flagsVar += "_FLAGS";
  this->AddConfigVariableFlags(flags, flagsVar, config);
}

//----------------------------------------------------------------------------
cmGeneratorTarget*
cmLocalGenerator::FindGeneratorTargetToUse(const std::string& name) const
{
  if (cmTarget *t = this->Makefile->FindTargetToUse(name))
    {
    return this->GetGlobalGenerator()->GetGeneratorTarget(t);
    }
  return 0;
}

//----------------------------------------------------------------------------
bool cmLocalGenerator::GetRealDependency(const std::string& inName,
                                         const std::string& config,
                                         std::string& dep)
{
  // Older CMake code may specify the dependency using the target
  // output file rather than the target name.  Such code would have
  // been written before there was support for target properties that
  // modify the name so stripping down to just the file name should
  // produce the target name in this case.
  std::string name = cmSystemTools::GetFilenameName(inName);

  // If the input name is the empty string, there is no real
  // dependency. Short-circuit the other checks:
  if(name == "")
    {
    return false;
    }

  if(cmSystemTools::GetFilenameLastExtension(name) == ".exe")
    {
    name = cmSystemTools::GetFilenameWithoutLastExtension(name);
    }

  // Look for a CMake target with the given name.
  if(cmGeneratorTarget* target =
     this->FindGeneratorTargetToUse(name))
    {
    // make sure it is not just a coincidence that the target name
    // found is part of the inName
    if(cmSystemTools::FileIsFullPath(inName.c_str()))
      {
      std::string tLocation;
      if(target->GetType() >= cmState::EXECUTABLE &&
         target->GetType() <= cmState::MODULE_LIBRARY)
        {
        tLocation = target->GetLocation(config);
        tLocation = cmSystemTools::GetFilenamePath(tLocation);
        tLocation = cmSystemTools::CollapseFullPath(tLocation);
        }
      std::string depLocation = cmSystemTools::GetFilenamePath(
        std::string(inName));
      depLocation = cmSystemTools::CollapseFullPath(depLocation);
      if(depLocation != tLocation)
        {
        // it is a full path to a depend that has the same name
        // as a target but is in a different location so do not use
        // the target as the depend
        dep = inName;
        return true;
        }
      }
    switch (target->GetType())
      {
      case cmState::EXECUTABLE:
      case cmState::STATIC_LIBRARY:
      case cmState::SHARED_LIBRARY:
      case cmState::MODULE_LIBRARY:
      case cmState::UNKNOWN_LIBRARY:
        dep = target->GetLocation(config);
        return true;
      case cmState::OBJECT_LIBRARY:
        // An object library has no single file on which to depend.
        // This was listed to get the target-level dependency.
        return false;
      case cmState::INTERFACE_LIBRARY:
        // An interface library has no file on which to depend.
        // This was listed to get the target-level dependency.
        return false;
      case cmState::UTILITY:
      case cmState::GLOBAL_TARGET:
        // A utility target has no file on which to depend.  This was listed
        // only to get the target-level dependency.
        return false;
      }
    }

  // The name was not that of a CMake target.  It must name a file.
  if(cmSystemTools::FileIsFullPath(inName.c_str()))
    {
    // This is a full path.  Return it as given.
    dep = inName;
    return true;
    }

  // Check for a source file in this directory that matches the
  // dependency.
  if(cmSourceFile* sf = this->Makefile->GetSource(inName))
    {
    dep = sf->GetFullPath();
    return true;
    }

  // Treat the name as relative to the source directory in which it
  // was given.
  dep = this->StateSnapshot.GetDirectory().GetCurrentSource();
  dep += "/";
  dep += inName;
  return true;
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddSharedFlags(std::string& flags,
                                      const std::string& lang,
                                      bool shared)
{
  std::string flagsVar;

  // Add flags for dealing with shared libraries for this language.
  if(shared)
    {
    flagsVar = "CMAKE_SHARED_LIBRARY_";
    flagsVar += lang;
    flagsVar += "_FLAGS";
    this->AppendFlags(flags, this->Makefile->GetDefinition(flagsVar));
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::
AddCompilerRequirementFlag(std::string &flags, cmTarget const* target,
                           const std::string& lang)
{
  if (lang.empty())
    {
    return;
    }
  const char* defaultStd
      = this->Makefile->GetDefinition("CMAKE_" + lang + "_STANDARD_DEFAULT");
  if (!defaultStd || !*defaultStd)
    {
    // This compiler has no notion of language standard levels.
    return;
    }
  std::string stdProp = lang + "_STANDARD";
  const char *standardProp = target->GetProperty(stdProp);
  if (!standardProp)
    {
    return;
    }
  std::string extProp = lang + "_EXTENSIONS";
  std::string type = "EXTENSION";
  bool ext = true;
  if (const char* extPropValue = target->GetProperty(extProp))
    {
    if (cmSystemTools::IsOff(extPropValue))
      {
      ext = false;
      type = "STANDARD";
      }
    }

  if (target->GetPropertyAsBool(lang + "_STANDARD_REQUIRED"))
    {
    std::string option_flag =
              "CMAKE_" + lang + standardProp
                      + "_" + type + "_COMPILE_OPTION";

    const char *opt = target->GetMakefile()->GetDefinition(option_flag);
    if (!opt)
      {
      std::ostringstream e;
      e << "Target \"" << target->GetName() << "\" requires the language "
           "dialect \"" << lang << standardProp << "\" "
        << (ext ? "(with compiler extensions)" : "") << ", but CMake "
           "does not know the compile flags to use to enable it.";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      }
    else
      {
      this->AppendFlagEscape(flags, opt);
      }
    return;
    }

  static std::map<std::string, std::vector<std::string> > langStdMap;
  if (langStdMap.empty())
    {
    // Maintain sorted order, most recent first.
    langStdMap["CXX"].push_back("14");
    langStdMap["CXX"].push_back("11");
    langStdMap["CXX"].push_back("98");

    langStdMap["C"].push_back("11");
    langStdMap["C"].push_back("99");
    langStdMap["C"].push_back("90");
    }

  std::string standard(standardProp);

  std::vector<std::string>& stds = langStdMap[lang];

  std::vector<std::string>::const_iterator stdIt =
                                std::find(stds.begin(), stds.end(), standard);
  if (stdIt == stds.end())
    {
    std::string e =
      lang + "_STANDARD is set to invalid value '" + standard + "'";
    this->GetGlobalGenerator()->GetCMakeInstance()
      ->IssueMessage(cmake::FATAL_ERROR, e, target->GetBacktrace());
    return;
    }

  std::vector<std::string>::const_iterator defaultStdIt =
    std::find(stds.begin(), stds.end(), defaultStd);
  if (defaultStdIt == stds.end())
    {
    std::string e =
      "CMAKE_" + lang + "_STANDARD_DEFAULT is set to invalid value '" +
      std::string(defaultStd) + "'";
    this->IssueMessage(cmake::INTERNAL_ERROR, e);
    return;
    }

  // Greater or equal because the standards are stored in
  // backward chronological order.
  if (stdIt >= defaultStdIt)
    {
    std::string option_flag =
              "CMAKE_" + lang + *stdIt
                      + "_" + type + "_COMPILE_OPTION";

    const char *opt =
        target->GetMakefile()->GetRequiredDefinition(option_flag);
    this->AppendFlagEscape(flags, opt);
    return;
    }

  for ( ; stdIt < defaultStdIt; ++stdIt)
    {
    std::string option_flag =
              "CMAKE_" + lang + *stdIt
                      + "_" + type + "_COMPILE_OPTION";

    if (const char *opt = target->GetMakefile()->GetDefinition(option_flag))
      {
      this->AppendFlagEscape(flags, opt);
      return;
      }
    }
}

static void AddVisibilityCompileOption(std::string &flags,
                                       cmTarget const* target,
                                       cmLocalGenerator *lg,
                                       const std::string& lang,
                                       std::string* warnCMP0063)
{
  std::string l(lang);
  std::string compileOption = "CMAKE_" + l + "_COMPILE_OPTIONS_VISIBILITY";
  const char *opt = lg->GetMakefile()->GetDefinition(compileOption);
  if (!opt)
    {
    return;
    }
  std::string flagDefine = l + "_VISIBILITY_PRESET";

  const char *prop = target->GetProperty(flagDefine);
  if (!prop)
    {
    return;
    }
  if (warnCMP0063)
    {
    *warnCMP0063 += "  " + flagDefine + "\n";
    return;
    }
  if (strcmp(prop, "hidden") != 0
      && strcmp(prop, "default") != 0
      && strcmp(prop, "protected") != 0
      && strcmp(prop, "internal") != 0 )
    {
    std::ostringstream e;
    e << "Target " << target->GetName() << " uses unsupported value \""
      << prop << "\" for " << flagDefine << ".";
    cmSystemTools::Error(e.str().c_str());
    return;
    }
  std::string option = std::string(opt) + prop;
  lg->AppendFlags(flags, option);
}

static void AddInlineVisibilityCompileOption(std::string &flags,
                                       cmTarget const* target,
                                       cmLocalGenerator *lg,
                                       std::string* warnCMP0063)
{
  std::string compileOption
                = "CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN";
  const char *opt = lg->GetMakefile()->GetDefinition(compileOption);
  if (!opt)
    {
    return;
    }

  bool prop = target->GetPropertyAsBool("VISIBILITY_INLINES_HIDDEN");
  if (!prop)
    {
    return;
    }
  if (warnCMP0063)
    {
    *warnCMP0063 += "  VISIBILITY_INLINES_HIDDEN\n";
    return;
    }
  lg->AppendFlags(flags, opt);
}

//----------------------------------------------------------------------------
void cmLocalGenerator
::AddVisibilityPresetFlags(std::string &flags, cmTarget const* target,
                            const std::string& lang)
{
  if (lang.empty())
    {
    return;
    }

  std::string warnCMP0063;
  std::string *pWarnCMP0063 = 0;
  if (target->GetType() != cmState::SHARED_LIBRARY &&
      target->GetType() != cmState::MODULE_LIBRARY &&
      !target->IsExecutableWithExports())
    {
    switch (target->GetPolicyStatusCMP0063())
      {
      case cmPolicies::OLD:
        return;
      case cmPolicies::WARN:
        pWarnCMP0063 = &warnCMP0063;
        break;
      default:
        break;
      }
    }

  AddVisibilityCompileOption(flags, target, this, lang, pWarnCMP0063);

  if(lang == "CXX")
    {
    AddInlineVisibilityCompileOption(flags, target, this, pWarnCMP0063);
    }

  if (!warnCMP0063.empty() &&
      this->WarnCMP0063.insert(target).second)
    {
    std::ostringstream w;
    w <<
      cmPolicies::GetPolicyWarning(cmPolicies::CMP0063) << "\n"
      "Target \"" << target->GetName() << "\" of "
      "type \"" << cmState::GetTargetTypeName(target->GetType()) << "\" "
      "has the following visibility properties set for " << lang << ":\n" <<
      warnCMP0063 <<
      "For compatibility CMake is not honoring them for this target.";
    target->GetMakefile()->GetCMakeInstance()
      ->IssueMessage(cmake::AUTHOR_WARNING, w.str(), target->GetBacktrace());
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddCMP0018Flags(std::string &flags,
                                       cmTarget const* target,
                                       std::string const& lang,
                                       const std::string& config)
{
  int targetType = target->GetType();

  bool shared = ((targetType == cmState::SHARED_LIBRARY) ||
                  (targetType == cmState::MODULE_LIBRARY));

  if (this->GetShouldUseOldFlags(shared, lang))
    {
    this->AddSharedFlags(flags, lang, shared);
    }
  else
    {
    if (target->GetType() == cmState::OBJECT_LIBRARY)
      {
      if (target->GetPropertyAsBool("POSITION_INDEPENDENT_CODE"))
        {
        this->AddPositionIndependentFlags(flags, lang, targetType);
        }
      return;
      }

    cmGeneratorTarget* gtgt =
        this->GlobalGenerator->GetGeneratorTarget(target);
    if (gtgt->GetLinkInterfaceDependentBoolProperty(
                                                "POSITION_INDEPENDENT_CODE",
                                                config))
      {
      this->AddPositionIndependentFlags(flags, lang, targetType);
      }
    if (shared)
      {
      this->AppendFeatureOptions(flags, lang, "DLL");
      }
    }
}

//----------------------------------------------------------------------------
bool cmLocalGenerator::GetShouldUseOldFlags(bool shared,
                                            const std::string &lang) const
{
  std::string originalFlags =
    this->GlobalGenerator->GetSharedLibFlagsForLanguage(lang);
  if (shared)
    {
    std::string flagsVar = "CMAKE_SHARED_LIBRARY_";
    flagsVar += lang;
    flagsVar += "_FLAGS";
    const char* flags =
        this->Makefile->GetSafeDefinition(flagsVar);

    if (flags && flags != originalFlags)
      {
      switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0018))
        {
        case cmPolicies::WARN:
        {
          std::ostringstream e;
          e << "Variable " << flagsVar << " has been modified. CMake "
            "will ignore the POSITION_INDEPENDENT_CODE target property for "
            "shared libraries and will use the " << flagsVar << " variable "
            "instead.  This may cause errors if the original content of "
            << flagsVar << " was removed.\n"
            << cmPolicies::GetPolicyWarning(cmPolicies::CMP0018);

          this->IssueMessage(cmake::AUTHOR_WARNING, e.str());
          // fall through to OLD behaviour
        }
        case cmPolicies::OLD:
          return true;
        case cmPolicies::REQUIRED_IF_USED:
        case cmPolicies::REQUIRED_ALWAYS:
        case cmPolicies::NEW:
          return false;
        }
      }
    }
  return false;
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddPositionIndependentFlags(std::string& flags,
                                                   std::string const& lang,
                                                   int targetType)
{
  const char* picFlags = 0;

  if(targetType == cmState::EXECUTABLE)
    {
    std::string flagsVar = "CMAKE_";
    flagsVar += lang;
    flagsVar += "_COMPILE_OPTIONS_PIE";
    picFlags = this->Makefile->GetSafeDefinition(flagsVar);
    }
  if (!picFlags)
    {
    std::string flagsVar = "CMAKE_";
    flagsVar += lang;
    flagsVar += "_COMPILE_OPTIONS_PIC";
    picFlags = this->Makefile->GetSafeDefinition(flagsVar);
    }
  if (picFlags)
    {
    std::vector<std::string> options;
    cmSystemTools::ExpandListArgument(picFlags, options);
    for(std::vector<std::string>::const_iterator oi = options.begin();
        oi != options.end(); ++oi)
      {
      this->AppendFlagEscape(flags, *oi);
      }
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AddConfigVariableFlags(std::string& flags,
                                              const std::string& var,
                                              const std::string& config)
{
  // Add the flags from the variable itself.
  std::string flagsVar = var;
  this->AppendFlags(flags, this->Makefile->GetDefinition(flagsVar));
  // Add the flags from the build-type specific variable.
  if(!config.empty())
    {
    flagsVar += "_";
    flagsVar += cmSystemTools::UpperCase(config);
    this->AppendFlags(flags, this->Makefile->GetDefinition(flagsVar));
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendFlags(std::string& flags,
                                   const std::string& newFlags)
{
  if(!newFlags.empty())
    {
    if(!flags.empty())
      {
      flags += " ";
      }
    flags += newFlags;
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendFlags(std::string& flags,
                                   const char* newFlags)
{
  if(newFlags && *newFlags)
    {
    this->AppendFlags(flags, std::string(newFlags));
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendFlagEscape(std::string& flags,
                                        const std::string& rawFlag)
{
  this->AppendFlags(flags, this->EscapeForShell(rawFlag));
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendDefines(std::set<std::string>& defines,
                                     const char* defines_list)
{
  // Short-circuit if there are no definitions.
  if(!defines_list)
    {
    return;
    }

  // Expand the list of definitions.
  std::vector<std::string> defines_vec;
  cmSystemTools::ExpandListArgument(defines_list, defines_vec);
  this->AppendDefines(defines, defines_vec);
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendDefines(std::set<std::string>& defines,
                                  const std::vector<std::string> &defines_vec)
{
  for(std::vector<std::string>::const_iterator di = defines_vec.begin();
      di != defines_vec.end(); ++di)
    {
    // Skip unsupported definitions.
    if(!this->CheckDefinition(*di))
      {
      continue;
      }
    defines.insert(*di);
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::JoinDefines(const std::set<std::string>& defines,
                                   std::string &definesString,
                                   const std::string& lang)
{
  // Lookup the define flag for the current language.
  std::string dflag = "-D";
  if(!lang.empty())
    {
    std::string defineFlagVar = "CMAKE_";
    defineFlagVar += lang;
    defineFlagVar += "_DEFINE_FLAG";
    const char* df = this->Makefile->GetDefinition(defineFlagVar);
    if(df && *df)
      {
      dflag = df;
      }
    }

  std::set<std::string>::const_iterator defineIt = defines.begin();
  const std::set<std::string>::const_iterator defineEnd = defines.end();
  const char* itemSeparator = definesString.empty() ? "" : " ";
  for( ; defineIt != defineEnd; ++defineIt)
    {
    // Append the definition with proper escaping.
    std::string def = dflag;
    if(this->GetState()->UseWatcomWMake())
      {
      // The Watcom compiler does its own command line parsing instead
      // of using the windows shell rules.  Definitions are one of
      //   -DNAME
      //   -DNAME=<cpp-token>
      //   -DNAME="c-string with spaces and other characters(?@#$)"
      //
      // Watcom will properly parse each of these cases from the
      // command line without any escapes.  However we still have to
      // get the '$' and '#' characters through WMake as '$$' and
      // '$#'.
      for(const char* c = defineIt->c_str(); *c; ++c)
        {
        if(*c == '$' || *c == '#')
          {
          def += '$';
          }
        def += *c;
        }
      }
    else
      {
      // Make the definition appear properly on the command line.  Use
      // -DNAME="value" instead of -D"NAME=value" to help VS6 parser.
      std::string::size_type eq = defineIt->find("=");
      def += defineIt->substr(0, eq);
      if(eq != defineIt->npos)
        {
        def += "=";
        def += this->EscapeForShell(defineIt->c_str() + eq + 1, true);
        }
      }
    definesString += itemSeparator;
    itemSeparator = " ";
    definesString += def;
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::AppendFeatureOptions(
  std::string& flags, const std::string& lang, const char* feature)
{
  std::string optVar = "CMAKE_";
  optVar += lang;
  optVar += "_COMPILE_OPTIONS_";
  optVar += feature;
  if(const char* optionList = this->Makefile->GetDefinition(optVar))
    {
    std::vector<std::string> options;
    cmSystemTools::ExpandListArgument(optionList, options);
    for(std::vector<std::string>::const_iterator oi = options.begin();
        oi != options.end(); ++oi)
      {
      this->AppendFlagEscape(flags, *oi);
      }
    }
}

//----------------------------------------------------------------------------
const char* cmLocalGenerator::GetFeature(const std::string& feature,
                                         const std::string& config)
{
  std::string featureName = feature;
  // TODO: Define accumulation policy for features (prepend, append, replace).
  // Currently we always replace.
  if(!config.empty())
    {
    featureName += "_";
    featureName += cmSystemTools::UpperCase(config);
    }
  cmState::Snapshot snp = this->StateSnapshot;
  while(snp.IsValid())
    {
    if(const char* value = snp.GetDirectory().GetProperty(featureName))
      {
      return value;
      }
    snp = snp.GetBuildsystemDirectoryParent();
    }
  return 0;
}

std::string cmLocalGenerator::GetProjectName() const
{
  return this->StateSnapshot.GetProjectName();
}

//----------------------------------------------------------------------------
std::string
cmLocalGenerator::ConstructComment(cmCustomCommandGenerator const& ccg,
                                   const char* default_comment)
{
  // Check for a comment provided with the command.
  if(ccg.GetComment())
    {
    return ccg.GetComment();
    }

  // Construct a reasonable default comment if possible.
  if(!ccg.GetOutputs().empty())
    {
    std::string comment;
    comment = "Generating ";
    const char* sep = "";
    for(std::vector<std::string>::const_iterator o = ccg.GetOutputs().begin();
        o != ccg.GetOutputs().end(); ++o)
      {
      comment += sep;
      comment += this->Convert(*o, cmLocalGenerator::START_OUTPUT);
      sep = ", ";
      }
    return comment;
    }

  // Otherwise use the provided default.
  return default_comment;
}

//----------------------------------------------------------------------------
class cmInstallTargetGeneratorLocal: public cmInstallTargetGenerator
{
public:
  cmInstallTargetGeneratorLocal(cmLocalGenerator* lg, std::string const& t,
                                const char* dest, bool implib):
    cmInstallTargetGenerator(
      t, dest, implib, "", std::vector<std::string>(), "Unspecified",
      cmInstallGenerator::SelectMessageLevel(lg->GetMakefile()),
      false)
  {
    this->Compute(lg);
  }
};

//----------------------------------------------------------------------------
void
cmLocalGenerator
::GenerateTargetInstallRules(
  std::ostream& os, const std::string& config,
  std::vector<std::string> const& configurationTypes)
{
  // Convert the old-style install specification from each target to
  // an install generator and run it.
  cmTargets& tgts = this->Makefile->GetTargets();
  for(cmTargets::iterator l = tgts.begin(); l != tgts.end(); ++l)
    {
    if (l->second.GetType() == cmState::INTERFACE_LIBRARY)
      {
      continue;
      }

    // Include the user-specified pre-install script for this target.
    if(const char* preinstall = l->second.GetProperty("PRE_INSTALL_SCRIPT"))
      {
      cmInstallScriptGenerator g(preinstall, false, 0);
      g.Generate(os, config, configurationTypes);
      }

    // Install this target if a destination is given.
    if(l->second.GetInstallPath() != "")
      {
      // Compute the full install destination.  Note that converting
      // to unix slashes also removes any trailing slash.
      // We also skip over the leading slash given by the user.
      std::string destination = l->second.GetInstallPath().substr(1);
      cmSystemTools::ConvertToUnixSlashes(destination);
      if(destination.empty())
        {
        destination = ".";
        }

      // Generate the proper install generator for this target type.
      switch(l->second.GetType())
        {
        case cmState::EXECUTABLE:
        case cmState::STATIC_LIBRARY:
        case cmState::MODULE_LIBRARY:
          {
          // Use a target install generator.
          cmInstallTargetGeneratorLocal
            g(this, l->first, destination.c_str(), false);
          g.Generate(os, config, configurationTypes);
          }
          break;
        case cmState::SHARED_LIBRARY:
          {
#if defined(_WIN32) || defined(__CYGWIN__)
          // Special code to handle DLL.  Install the import library
          // to the normal destination and the DLL to the runtime
          // destination.
          cmInstallTargetGeneratorLocal
            g1(this, l->first, destination.c_str(), true);
          g1.Generate(os, config, configurationTypes);
          // We also skip over the leading slash given by the user.
          destination = l->second.GetRuntimeInstallPath().substr(1);
          cmSystemTools::ConvertToUnixSlashes(destination);
          cmInstallTargetGeneratorLocal
            g2(this, l->first, destination.c_str(), false);
          g2.Generate(os, config, configurationTypes);
#else
          // Use a target install generator.
          cmInstallTargetGeneratorLocal
            g(this, l->first, destination.c_str(), false);
          g.Generate(os, config, configurationTypes);
#endif
          }
          break;
        default:
          break;
        }
      }

    // Include the user-specified post-install script for this target.
    if(const char* postinstall = l->second.GetProperty("POST_INSTALL_SCRIPT"))
      {
      cmInstallScriptGenerator g(postinstall, false, 0);
      g.Generate(os, config, configurationTypes);
      }
    }
}

#if defined(CM_LG_ENCODE_OBJECT_NAMES)
static std::string cmLocalGeneratorMD5(const char* input)
{
  char md5out[32];
  cmsysMD5* md5 = cmsysMD5_New();
  cmsysMD5_Initialize(md5);
  cmsysMD5_Append(md5, reinterpret_cast<unsigned char const*>(input), -1);
  cmsysMD5_FinalizeHex(md5, md5out);
  cmsysMD5_Delete(md5);
  return std::string(md5out, 32);
}

static bool
cmLocalGeneratorShortenObjectName(std::string& objName,
                                  std::string::size_type max_len)
{
  // Replace the beginning of the path portion of the object name with
  // its own md5 sum.
  std::string::size_type pos = objName.find('/', objName.size()-max_len+32);
  if(pos != objName.npos)
    {
    std::string md5name = cmLocalGeneratorMD5(objName.substr(0, pos).c_str());
    md5name += objName.substr(pos);
    objName = md5name;

    // The object name is now short enough.
    return true;
    }
  else
    {
    // The object name could not be shortened enough.
    return false;
    }
}

static
bool cmLocalGeneratorCheckObjectName(std::string& objName,
                                     std::string::size_type dir_len,
                                     std::string::size_type max_total_len)
{
  // Enforce the maximum file name length if possible.
  std::string::size_type max_obj_len = max_total_len;
  if(dir_len < max_total_len)
    {
    max_obj_len = max_total_len - dir_len;
    if(objName.size() > max_obj_len)
      {
      // The current object file name is too long.  Try to shorten it.
      return cmLocalGeneratorShortenObjectName(objName, max_obj_len);
      }
    else
      {
      // The object file name is short enough.
      return true;
      }
    }
  else
    {
    // The build directory in which the object will be stored is
    // already too deep.
    return false;
    }
}
#endif

//----------------------------------------------------------------------------
std::string&
cmLocalGenerator
::CreateSafeUniqueObjectFileName(const std::string& sin,
                                 std::string const& dir_max)
{
  // Look for an existing mapped name for this object file.
  std::map<std::string,std::string>::iterator it =
    this->UniqueObjectNamesMap.find(sin);

  // If no entry exists create one.
  if(it == this->UniqueObjectNamesMap.end())
    {
    // Start with the original name.
    std::string ssin = sin;

    // Avoid full paths by removing leading slashes.
    ssin.erase(0, ssin.find_first_not_of("/"));

    // Avoid full paths by removing colons.
    cmSystemTools::ReplaceString(ssin, ":", "_");

    // Avoid relative paths that go up the tree.
    cmSystemTools::ReplaceString(ssin, "../", "__/");

    // Avoid spaces.
    cmSystemTools::ReplaceString(ssin, " ", "_");

    // Mangle the name if necessary.
    if(this->Makefile->IsOn("CMAKE_MANGLE_OBJECT_FILE_NAMES"))
      {
      bool done;
      int cc = 0;
      char rpstr[100];
      sprintf(rpstr, "_p_");
      cmSystemTools::ReplaceString(ssin, "+", rpstr);
      std::string sssin = sin;
      do
        {
        done = true;
        for ( it = this->UniqueObjectNamesMap.begin();
              it != this->UniqueObjectNamesMap.end();
              ++ it )
          {
          if ( it->second == ssin )
            {
            done = false;
            }
          }
        if ( done )
          {
          break;
          }
        sssin = ssin;
        cmSystemTools::ReplaceString(ssin, "_p_", rpstr);
        sprintf(rpstr, "_p%d_", cc++);
        }
      while ( !done );
      }

#if defined(CM_LG_ENCODE_OBJECT_NAMES)
    if(!cmLocalGeneratorCheckObjectName(ssin, dir_max.size(),
                                        this->ObjectPathMax))
      {
      // Warn if this is the first time the path has been seen.
      if(this->ObjectMaxPathViolations.insert(dir_max).second)
        {
        std::ostringstream m;
        m << "The object file directory\n"
          << "  " << dir_max << "\n"
          << "has " << dir_max.size() << " characters.  "
          << "The maximum full path to an object file is "
          << this->ObjectPathMax << " characters "
          << "(see CMAKE_OBJECT_PATH_MAX).  "
          << "Object file\n"
          << "  " << ssin << "\n"
          << "cannot be safely placed under this directory.  "
          << "The build may not work correctly.";
        this->IssueMessage(cmake::WARNING, m.str());
        }
      }
#else
    (void)dir_max;
#endif

    // Insert the newly mapped object file name.
    std::map<std::string, std::string>::value_type e(sin, ssin);
    it = this->UniqueObjectNamesMap.insert(e).first;
    }

  // Return the map entry.
  return it->second;
}

//----------------------------------------------------------------------------
void cmLocalGenerator::ComputeObjectFilenames(
                            std::map<cmSourceFile const*, std::string>&,
                            cmGeneratorTarget const*)
{

}

bool cmLocalGenerator::IsWindowsShell() const
{
  return this->GetState()->UseWindowsShell();
}

bool cmLocalGenerator::IsWatcomWMake() const
{
  return this->GetState()->UseWatcomWMake();
}

bool cmLocalGenerator::IsMinGWMake() const
{
  return this->GetState()->UseMinGWMake();
}

bool cmLocalGenerator::IsNMake() const
{
  return this->GetState()->UseNMake();
}

//----------------------------------------------------------------------------
std::string
cmLocalGenerator
::GetObjectFileNameWithoutTarget(const cmSourceFile& source,
                                 std::string const& dir_max,
                                 bool* hasSourceExtension)
{
  // Construct the object file name using the full path to the source
  // file which is its only unique identification.
  const char* fullPath = source.GetFullPath().c_str();

  // Try referencing the source relative to the source tree.
  std::string relFromSource = this->Convert(fullPath, START);
  assert(!relFromSource.empty());
  bool relSource = !cmSystemTools::FileIsFullPath(relFromSource.c_str());
  bool subSource = relSource && relFromSource[0] != '.';

  // Try referencing the source relative to the binary tree.
  std::string relFromBinary = this->Convert(fullPath, START_OUTPUT);
  assert(!relFromBinary.empty());
  bool relBinary = !cmSystemTools::FileIsFullPath(relFromBinary.c_str());
  bool subBinary = relBinary && relFromBinary[0] != '.';

  // Select a nice-looking reference to the source file to construct
  // the object file name.
  std::string objectName;
  if((relSource && !relBinary) || (subSource && !subBinary))
    {
    objectName = relFromSource;
    }
  else if((relBinary && !relSource) || (subBinary && !subSource))
    {
    objectName = relFromBinary;
    }
  else if(relFromBinary.length() < relFromSource.length())
    {
    objectName = relFromBinary;
    }
  else
    {
    objectName = relFromSource;
    }

  // if it is still a full path check for the try compile case
  // try compile never have in source sources, and should not
  // have conflicting source file names in the same target
  if(cmSystemTools::FileIsFullPath(objectName.c_str()))
    {
    if(this->GetGlobalGenerator()->GetCMakeInstance()->GetIsInTryCompile())
      {
      objectName = cmSystemTools::GetFilenameName(source.GetFullPath());
      }
    }

  // Replace the original source file extension with the object file
  // extension.
  bool keptSourceExtension = true;
  if(!source.GetPropertyAsBool("KEEP_EXTENSION"))
    {
    // Decide whether this language wants to replace the source
    // extension with the object extension.  For CMake 2.4
    // compatibility do this by default.
    bool replaceExt = this->NeedBackwardsCompatibility_2_4();
    if(!replaceExt)
      {
      std::string lang = source.GetLanguage();
      if(!lang.empty())
        {
        std::string repVar = "CMAKE_";
        repVar += lang;
        repVar += "_OUTPUT_EXTENSION_REPLACE";
        replaceExt = this->Makefile->IsOn(repVar);
        }
      }

    // Remove the source extension if it is to be replaced.
    if(replaceExt)
      {
      keptSourceExtension = false;
      std::string::size_type dot_pos = objectName.rfind(".");
      if(dot_pos != std::string::npos)
        {
        objectName = objectName.substr(0, dot_pos);
        }
      }

    // Store the new extension.
    objectName +=
      this->GlobalGenerator->GetLanguageOutputExtension(source);
    }
  if(hasSourceExtension)
    {
    *hasSourceExtension = keptSourceExtension;
    }

  // Convert to a safe name.
  return this->CreateSafeUniqueObjectFileName(objectName, dir_max);
}

//----------------------------------------------------------------------------
std::string
cmLocalGenerator
::GetSourceFileLanguage(const cmSourceFile& source)
{
  return source.GetLanguage();
}

cmake* cmLocalGenerator::GetCMakeInstance() const
{
  return this->GlobalGenerator->GetCMakeInstance();
}

const char* cmLocalGenerator::GetSourceDirectory() const
{
  return this->GetCMakeInstance()->GetHomeDirectory();
}

const char* cmLocalGenerator::GetBinaryDirectory() const
{
  return this->GetCMakeInstance()->GetHomeOutputDirectory();
}

const char* cmLocalGenerator::GetCurrentBinaryDirectory() const
{
  return this->StateSnapshot.GetDirectory().GetCurrentBinary();
}

const char* cmLocalGenerator::GetCurrentSourceDirectory() const
{
  return this->StateSnapshot.GetDirectory().GetCurrentSource();
}

//----------------------------------------------------------------------------
std::string
cmLocalGenerator::GetTargetDirectory(const cmGeneratorTarget*) const
{
  cmSystemTools::Error("GetTargetDirectory"
                       " called on cmLocalGenerator");
  return "";
}

//----------------------------------------------------------------------------
cmIML_INT_uint64_t cmLocalGenerator::GetBackwardsCompatibility()
{
  // The computed version may change until the project is fully
  // configured.
  if(!this->BackwardsCompatibilityFinal)
    {
    unsigned int major = 0;
    unsigned int minor = 0;
    unsigned int patch = 0;
    if(const char* value
       = this->Makefile->GetDefinition("CMAKE_BACKWARDS_COMPATIBILITY"))
      {
      switch(sscanf(value, "%u.%u.%u", &major, &minor, &patch))
        {
        case 2: patch = 0; break;
        case 1: minor = 0; patch = 0; break;
        default: break;
        }
      }
    this->BackwardsCompatibility = CMake_VERSION_ENCODE(major, minor, patch);
    this->BackwardsCompatibilityFinal = true;
    }

  return this->BackwardsCompatibility;
}

//----------------------------------------------------------------------------
bool cmLocalGenerator::NeedBackwardsCompatibility_2_4()
{
  // Check the policy to decide whether to pay attention to this
  // variable.
  switch(this->Makefile->GetPolicyStatus(cmPolicies::CMP0001))
    {
    case cmPolicies::WARN:
      // WARN is just OLD without warning because user code does not
      // always affect whether this check is done.
    case cmPolicies::OLD:
      // Old behavior is to check the variable.
      break;
    case cmPolicies::NEW:
      // New behavior is to ignore the variable.
      return false;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
      // This will never be the case because the only way to require
      // the setting is to require the user to specify version policy
      // 2.6 or higher.  Once we add that requirement then this whole
      // method can be removed anyway.
      return false;
    }

  // Compatibility is needed if CMAKE_BACKWARDS_COMPATIBILITY is set
  // equal to or lower than the given version.
  cmIML_INT_uint64_t actual_compat = this->GetBackwardsCompatibility();
  return (actual_compat &&
          actual_compat <= CMake_VERSION_ENCODE(2, 4, 255));
}

//----------------------------------------------------------------------------
bool cmLocalGenerator::CheckDefinition(std::string const& define) const
{
  // Many compilers do not support -DNAME(arg)=sdf so we disable it.
  std::string::size_type pos = define.find_first_of("(=");
  if (pos != std::string::npos)
    {
    if (define[pos] == '(')
      {
      std::ostringstream e;
      e << "WARNING: Function-style preprocessor definitions may not be "
        << "passed on the compiler command line because many compilers "
        << "do not support it.\n"
        << "CMake is dropping a preprocessor definition: " << define << "\n"
        << "Consider defining the macro in a (configured) header file.\n";
      cmSystemTools::Message(e.str().c_str());
      return false;
      }
    }

  // Many compilers do not support # in the value so we disable it.
  if(define.find_first_of("#") != define.npos)
    {
    std::ostringstream e;
    e << "WARNING: Preprocessor definitions containing '#' may not be "
      << "passed on the compiler command line because many compilers "
      << "do not support it.\n"
      << "CMake is dropping a preprocessor definition: " << define << "\n"
      << "Consider defining the macro in a (configured) header file.\n";
    cmSystemTools::Message(e.str().c_str());
    return false;
    }

  // Assume it is supported.
  return true;
}

//----------------------------------------------------------------------------
static void cmLGInfoProp(cmMakefile* mf, cmTarget* target,
    const std::string& prop)
{
  if(const char* val = target->GetProperty(prop))
    {
    mf->AddDefinition(prop, val);
    }
}

//----------------------------------------------------------------------------
void cmLocalGenerator::GenerateAppleInfoPList(cmTarget* target,
                                              const std::string& targetName,
                                              const char* fname)
{
  // Find the Info.plist template.
  const char* in = target->GetProperty("MACOSX_BUNDLE_INFO_PLIST");
  std::string inFile = (in && *in)? in : "MacOSXBundleInfo.plist.in";
  if(!cmSystemTools::FileIsFullPath(inFile.c_str()))
    {
    std::string inMod = this->Makefile->GetModulesFile(inFile.c_str());
    if(!inMod.empty())
      {
      inFile = inMod;
      }
    }
  if(!cmSystemTools::FileExists(inFile.c_str(), true))
    {
    std::ostringstream e;
    e << "Target " << target->GetName() << " Info.plist template \""
      << inFile << "\" could not be found.";
    cmSystemTools::Error(e.str().c_str());
    return;
    }

  // Convert target properties to variables in an isolated makefile
  // scope to configure the file.  If properties are set they will
  // override user make variables.  If not the configuration will fall
  // back to the directory-level values set by the user.
  cmMakefile* mf = this->Makefile;
  mf->PushScope();
  mf->AddDefinition("MACOSX_BUNDLE_EXECUTABLE_NAME", targetName.c_str());
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_INFO_STRING");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_ICON_FILE");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_GUI_IDENTIFIER");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_LONG_VERSION_STRING");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_BUNDLE_NAME");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_SHORT_VERSION_STRING");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_BUNDLE_VERSION");
  cmLGInfoProp(mf, target, "MACOSX_BUNDLE_COPYRIGHT");
  mf->ConfigureFile(inFile.c_str(), fname, false, false, false);
  mf->PopScope();
}

//----------------------------------------------------------------------------
void cmLocalGenerator::GenerateFrameworkInfoPList(cmTarget* target,
                                                const std::string& targetName,
                                                const char* fname)
{
  // Find the Info.plist template.
  const char* in = target->GetProperty("MACOSX_FRAMEWORK_INFO_PLIST");
  std::string inFile = (in && *in)? in : "MacOSXFrameworkInfo.plist.in";
  if(!cmSystemTools::FileIsFullPath(inFile.c_str()))
    {
    std::string inMod = this->Makefile->GetModulesFile(inFile.c_str());
    if(!inMod.empty())
      {
      inFile = inMod;
      }
    }
  if(!cmSystemTools::FileExists(inFile.c_str(), true))
    {
    std::ostringstream e;
    e << "Target " << target->GetName() << " Info.plist template \""
      << inFile << "\" could not be found.";
    cmSystemTools::Error(e.str().c_str());
    return;
    }

  // Convert target properties to variables in an isolated makefile
  // scope to configure the file.  If properties are set they will
  // override user make variables.  If not the configuration will fall
  // back to the directory-level values set by the user.
  cmMakefile* mf = this->Makefile;
  mf->PushScope();
  mf->AddDefinition("MACOSX_FRAMEWORK_NAME", targetName.c_str());
  cmLGInfoProp(mf, target, "MACOSX_FRAMEWORK_ICON_FILE");
  cmLGInfoProp(mf, target, "MACOSX_FRAMEWORK_IDENTIFIER");
  cmLGInfoProp(mf, target, "MACOSX_FRAMEWORK_SHORT_VERSION_STRING");
  cmLGInfoProp(mf, target, "MACOSX_FRAMEWORK_BUNDLE_VERSION");
  mf->ConfigureFile(inFile.c_str(), fname, false, false, false);
  mf->PopScope();
}
