CMake/Source/cmMakefile.cxx

/*============================================================================
  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 "cmMakefile.h"
#include "cmVersion.h"
#include "cmCommand.h"
#include "cmSourceFile.h"
#include "cmSourceFileLocation.h"
#include "cmSystemTools.h"
#include "cmGlobalGenerator.h"
#include "cmCommands.h"
#include "cmState.h"
#include "cmOutputConverter.h"
#include "cmFunctionBlocker.h"
#include "cmGeneratorExpressionEvaluationFile.h"
#include "cmListFileCache.h"
#include "cmCommandArgumentParserHelper.h"
#include "cmGeneratorExpression.h"
#include "cmTest.h"
#ifdef CMAKE_BUILD_WITH_CMAKE
#  include "cmVariableWatch.h"
#endif
#include "cmInstallGenerator.h"
#include "cmTestGenerator.h"
#include "cmAlgorithms.h"
#include "cmake.h"
#include <stdlib.h> // required for atoi

#include <cmsys/RegularExpression.hxx>
#include <cmsys/FStream.hxx>
#include <cmsys/auto_ptr.hxx>

#include <list>
#include <ctype.h> // for isspace
#include <assert.h>

// default is not to be building executables
cmMakefile::cmMakefile(cmGlobalGenerator* globalGenerator,
                       cmState::Snapshot const& snapshot)
  : GlobalGenerator(globalGenerator),
    StateSnapshot(snapshot)
{
  this->IsSourceFileTryCompile = false;

  this->WarnUnused = this->GetCMakeInstance()->GetWarnUnused();
  this->CheckSystemVars = this->GetCMakeInstance()->GetCheckSystemVars();

  this->SuppressWatches = false;

  // Setup the default include complaint regular expression (match nothing).
  this->ComplainFileRegularExpression = "^$";

  this->DefineFlags = " ";

  this->cmDefineRegex.compile("#cmakedefine[ \t]+([A-Za-z_0-9]*)");
  this->cmDefine01Regex.compile("#cmakedefine01[ \t]+([A-Za-z_0-9]*)");
  this->cmAtVarRegex.compile("(@[A-Za-z_0-9/.+-]+@)");
  this->cmNamedCurly.compile("^[A-Za-z0-9/_.+-]+{");

  this->StateSnapshot = this->StateSnapshot.GetState()
      ->CreatePolicyScopeSnapshot(this->StateSnapshot);

  // Enter a policy level for this directory.
  this->PushPolicy();

  // push empty loop block
  this->PushLoopBlockBarrier();

  // By default the check is not done.  It is enabled by
  // cmListFileCache in the top level if necessary.
  this->CheckCMP0000 = false;

#if defined(CMAKE_BUILD_WITH_CMAKE)
  this->AddSourceGroup("", "^.*$");
  this->AddSourceGroup
    ("Source Files",
     "\\.(C|M|c|c\\+\\+|cc|cpp|cxx|f|f90|for|fpp"
     "|ftn|m|mm|rc|def|r|odl|idl|hpj|bat)$");
  this->AddSourceGroup("Header Files", CM_HEADER_REGEX);
  this->AddSourceGroup("CMake Rules", "\\.rule$");
  this->AddSourceGroup("Resources", "\\.plist$");
  this->AddSourceGroup("Object Files", "\\.(lo|o|obj)$");
#endif
}

cmMakefile::~cmMakefile()
{
  cmDeleteAll(this->InstallGenerators);
  cmDeleteAll(this->TestGenerators);
  cmDeleteAll(this->SourceFiles);
  cmDeleteAll(this->Tests);
  cmDeleteAll(this->ImportedTargetsOwned);
  cmDeleteAll(this->FinalPassCommands);
  cmDeleteAll(this->FunctionBlockers);
  cmDeleteAll(this->EvaluationFiles);
}

//----------------------------------------------------------------------------
void cmMakefile::IssueMessage(cmake::MessageType t,
                              std::string const& text,
                              bool force) const
{
  // Collect context information.
  if(!this->ExecutionStatusStack.empty())
    {
    if((t == cmake::FATAL_ERROR) || (t == cmake::INTERNAL_ERROR))
      {
      this->ExecutionStatusStack.back()->SetNestedError(true);
      }
    this->GetCMakeInstance()->IssueMessage(t, text, this->GetBacktrace(),
                                           force);
    }
  else
    {
    cmListFileContext lfc;
    // We are not currently executing a command.  Add whatever context
    // information we have.
    lfc.FilePath = this->GetExecutionFilePath();

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

cmStringRange cmMakefile::GetIncludeDirectoriesEntries() const
{
  return this->StateSnapshot.GetDirectory().GetIncludeDirectoriesEntries();
}

cmBacktraceRange cmMakefile::GetIncludeDirectoriesBacktraces() const
{
  return this->StateSnapshot.GetDirectory()
      .GetIncludeDirectoriesEntryBacktraces();
}

cmStringRange cmMakefile::GetCompileOptionsEntries() const
{
  return this->StateSnapshot.GetDirectory().GetCompileOptionsEntries();
}

cmBacktraceRange cmMakefile::GetCompileOptionsBacktraces() const
{
  return this->StateSnapshot.GetDirectory().GetCompileOptionsEntryBacktraces();
}

cmStringRange cmMakefile::GetCompileDefinitionsEntries() const
{
  return this->StateSnapshot.GetDirectory().GetCompileDefinitionsEntries();
}

cmBacktraceRange cmMakefile::GetCompileDefinitionsBacktraces() const
{
  return this->StateSnapshot.GetDirectory()
      .GetCompileDefinitionsEntryBacktraces();
}

//----------------------------------------------------------------------------
cmListFileBacktrace cmMakefile::GetBacktrace() const
{
  cmListFileBacktrace backtrace;
  if (!this->ContextStack.empty())
    {
    backtrace = cmListFileBacktrace(this->StateSnapshot,
                                    *this->ContextStack.back());
    }
  return backtrace;
}

//----------------------------------------------------------------------------
cmListFileBacktrace
cmMakefile::GetBacktrace(cmCommandContext const& cc) const
{
  cmState::Snapshot snp = this->StateSnapshot;
  return cmListFileBacktrace(snp, cc);
}

//----------------------------------------------------------------------------
cmListFileContext cmMakefile::GetExecutionContext() const
{
  return cmListFileContext::FromCommandContext(
        *this->ContextStack.back(),
        this->StateSnapshot.GetExecutionListFile());
}

//----------------------------------------------------------------------------
void cmMakefile::PrintCommandTrace(const cmListFileFunction& lff) const
{
  std::ostringstream msg;
  msg << this->GetExecutionFilePath() << "(" << lff.Line << "):  ";
  msg << lff.Name << "(";
  bool expand = this->GetCMakeInstance()->GetTraceExpand();
  std::string temp;
  for(std::vector<cmListFileArgument>::const_iterator i =
        lff.Arguments.begin(); i != lff.Arguments.end(); ++i)
    {
    if (expand)
      {
      temp = i->Value;
      this->ExpandVariablesInString(temp);
      msg << temp;
      }
    else
      {
      msg << i->Value;
      }
    msg << " ";
    }
  msg << ")";
  cmSystemTools::Message(msg.str().c_str());
}

//----------------------------------------------------------------------------
bool cmMakefile::ExecuteCommand(const cmListFileFunction& lff,
                                cmExecutionStatus &status)
{
  bool result = true;

  // quick return if blocked
  if(this->IsFunctionBlocked(lff,status))
    {
    // No error.
    return result;
    }

  std::string name = lff.Name;

  // Place this call on the call stack.
  cmMakefileCall stack_manager(this, lff, status);
  static_cast<void>(stack_manager);

  // Lookup the command prototype.
  if(cmCommand* proto = this->GetState()->GetCommand(name))
    {
    // Clone the prototype.
    cmsys::auto_ptr<cmCommand> pcmd(proto->Clone());
    pcmd->SetMakefile(this);

    // Decide whether to invoke the command.
    if(pcmd->GetEnabled() && !cmSystemTools::GetFatalErrorOccured()  &&
       (this->GetCMakeInstance()->GetWorkingMode() != cmake::SCRIPT_MODE
       || pcmd->IsScriptable()))

      {
      // if trace is enabled, print out invoke information
      if(this->GetCMakeInstance()->GetTrace())
        {
        this->PrintCommandTrace(lff);
        }
      // Try invoking the command.
      if(!pcmd->InvokeInitialPass(lff.Arguments,status) ||
         status.GetNestedError())
        {
        if(!status.GetNestedError())
          {
          // The command invocation requested that we report an error.
          this->IssueMessage(cmake::FATAL_ERROR, pcmd->GetError());
          }
        result = false;
        if ( this->GetCMakeInstance()->GetWorkingMode() != cmake::NORMAL_MODE)
          {
          cmSystemTools::SetFatalErrorOccured();
          }
        }
      else if(pcmd->HasFinalPass())
        {
        // use the command
        this->FinalPassCommands.push_back(pcmd.release());
        }
      }
    else if ( this->GetCMakeInstance()->GetWorkingMode() == cmake::SCRIPT_MODE
              && !pcmd->IsScriptable() )
      {
      std::string error = "Command ";
      error += pcmd->GetName();
      error += "() is not scriptable";
      this->IssueMessage(cmake::FATAL_ERROR, error);
      result = false;
      cmSystemTools::SetFatalErrorOccured();
      }
    }
  else
    {
    if(!cmSystemTools::GetFatalErrorOccured())
      {
      std::string error = "Unknown CMake command \"";
      error += lff.Name;
      error += "\".";
      this->IssueMessage(cmake::FATAL_ERROR, error);
      result = false;
      cmSystemTools::SetFatalErrorOccured();
      }
    }

  return result;
}

//----------------------------------------------------------------------------
class cmMakefile::IncludeScope
{
public:
  IncludeScope(cmMakefile* mf, std::string const& filenametoread,
               bool noPolicyScope);
  ~IncludeScope();
  void Quiet() { this->ReportError = false; }
private:
  cmMakefile* Makefile;
  bool NoPolicyScope;
  bool CheckCMP0011;
  bool ReportError;
  void EnforceCMP0011();
};

//----------------------------------------------------------------------------
cmMakefile::IncludeScope::IncludeScope(cmMakefile* mf,
                                       std::string const& filenametoread,
                                       bool noPolicyScope):
  Makefile(mf), NoPolicyScope(noPolicyScope),
  CheckCMP0011(false), ReportError(true)
{
  this->Makefile->PushFunctionBlockerBarrier();

  this->Makefile->StateSnapshot =
      this->Makefile->GetState()->CreateCallStackSnapshot(
        this->Makefile->StateSnapshot,
        this->Makefile->ContextStack.back()->Name,
        this->Makefile->ContextStack.back()->Line,
        filenametoread);
  if(!this->NoPolicyScope)
    {
    // Check CMP0011 to determine the policy scope type.
    switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0011))
      {
      case cmPolicies::WARN:
        // We need to push a scope to detect whether the script sets
        // any policies that would affect the includer and therefore
        // requires a warning.  We use a weak scope to simulate OLD
        // behavior by allowing policy changes to affect the includer.
        this->Makefile->PushPolicy(true);
        this->CheckCMP0011 = true;
        break;
      case cmPolicies::OLD:
        // OLD behavior is to not push a scope at all.
        this->NoPolicyScope = true;
        break;
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
        // We should never make this policy required, but we handle it
        // here just in case.
        this->CheckCMP0011 = true;
      case cmPolicies::NEW:
        // NEW behavior is to push a (strong) scope.
        this->Makefile->PushPolicy();
        break;
      }
    }
}

//----------------------------------------------------------------------------
cmMakefile::IncludeScope::~IncludeScope()
{
  if(!this->NoPolicyScope)
    {
    // If we need to enforce policy CMP0011 then the top entry is the
    // one we pushed above.  If the entry is empty, then the included
    // script did not set any policies that might affect the includer so
    // we do not need to enforce the policy.
    if(this->CheckCMP0011
       && !this->Makefile->StateSnapshot.HasDefinedPolicyCMP0011())
      {
      this->CheckCMP0011 = false;
      }

    // Pop the scope we pushed for the script.
    this->Makefile->PopPolicy();

    // We enforce the policy after the script's policy stack entry has
    // been removed.
    if(this->CheckCMP0011)
      {
      this->EnforceCMP0011();
      }
    }
  this->Makefile->PopSnapshot(this->ReportError);

  this->Makefile->PopFunctionBlockerBarrier(this->ReportError);
}

//----------------------------------------------------------------------------
void cmMakefile::IncludeScope::EnforceCMP0011()
{
  // We check the setting of this policy again because the included
  // script might actually set this policy for its includer.
  switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0011))
    {
    case cmPolicies::WARN:
      // Warn because the user did not set this policy.
      {
      std::ostringstream w;
      w << cmPolicies::GetPolicyWarning(cmPolicies::CMP0011) << "\n"
        << "The included script\n  "
        << this->Makefile->GetExecutionFilePath() << "\n"
        << "affects policy settings.  "
        << "CMake is implying the NO_POLICY_SCOPE option for compatibility, "
        << "so the effects are applied to the including context.";
      this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, w.str());
      }
      break;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
      {
      std::ostringstream e;
      e << cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0011) << "\n"
        << "The included script\n  "
        << this->Makefile->GetExecutionFilePath() << "\n"
        << "affects policy settings, so it requires this policy to be set.";
      this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
      }
      break;
    case cmPolicies::OLD:
    case cmPolicies::NEW:
      // The script set this policy.  We assume the purpose of the
      // script is to initialize policies for its includer, and since
      // the policy is now set for later scripts, we do not warn.
      break;
    }
}

class cmParseFileScope
{
public:
  cmParseFileScope(cmMakefile* mf)
    : Makefile(mf)
  {
    this->Makefile->ContextStack.push_back(&this->Context);
  }

  ~cmParseFileScope()
  {
    this->Makefile->ContextStack.pop_back();
  }

private:
  cmMakefile* Makefile;
  cmCommandContext Context;
};

bool cmMakefile::ReadDependentFile(const char* filename, bool noPolicyScope)
{
  this->AddDefinition("CMAKE_PARENT_LIST_FILE",
                      this->GetDefinition("CMAKE_CURRENT_LIST_FILE"));
  std::string filenametoread =
    cmSystemTools::CollapseFullPath(filename,
                                    this->GetCurrentSourceDirectory());

  IncludeScope incScope(this, filenametoread, noPolicyScope);

  cmListFile listFile;
  {
  cmParseFileScope pfs(this);
  if (!listFile.ParseFile(filenametoread.c_str(), false, this))
    {
    return false;
    }
  }

  this->ReadListFile(listFile, filenametoread);
  if(cmSystemTools::GetFatalErrorOccured())
    {
    incScope.Quiet();
    }
  return true;
}

class cmMakefile::ListFileScope
{
public:
  ListFileScope(cmMakefile* mf, std::string const& filenametoread)
    : Makefile(mf), ReportError(true)
  {
    long line = 0;
    std::string name;
    if (!this->Makefile->ContextStack.empty())
      {
      line = this->Makefile->ContextStack.back()->Line;
      name = this->Makefile->ContextStack.back()->Name;
      }
    this->Makefile->StateSnapshot =
        this->Makefile->GetState()->CreateInlineListFileSnapshot(
          this->Makefile->StateSnapshot, name, line, filenametoread);
    assert(this->Makefile->StateSnapshot.IsValid());

    this->Makefile->PushFunctionBlockerBarrier();
  }

  ~ListFileScope()
  {
    this->Makefile->PopSnapshot(this->ReportError);
    this->Makefile->PopFunctionBlockerBarrier(this->ReportError);
  }

  void Quiet() { this->ReportError = false; }
private:
  cmMakefile* Makefile;
  bool ReportError;
};

bool cmMakefile::ReadListFile(const char* filename)
{
  std::string filenametoread =
    cmSystemTools::CollapseFullPath(filename,
                                    this->GetCurrentSourceDirectory());

  ListFileScope scope(this, filenametoread);

  cmListFile listFile;
  {
  cmParseFileScope pfs(this);
  if (!listFile.ParseFile(filenametoread.c_str(), false, this))
    {
    return false;
    }
  }

  this->ReadListFile(listFile, filenametoread);
  if(cmSystemTools::GetFatalErrorOccured())
    {
    scope.Quiet();
    }
  return true;
}

void cmMakefile::ReadListFile(cmListFile const& listFile,
                              std::string const& filenametoread)
{
  // add this list file to the list of dependencies
  this->ListFiles.push_back(filenametoread);

  std::string currentParentFile
      = this->GetSafeDefinition("CMAKE_PARENT_LIST_FILE");
  std::string currentFile
    = this->GetSafeDefinition("CMAKE_CURRENT_LIST_FILE");

  this->AddDefinition("CMAKE_CURRENT_LIST_FILE", filenametoread.c_str());
  this->AddDefinition("CMAKE_CURRENT_LIST_DIR",
                       cmSystemTools::GetFilenamePath(filenametoread).c_str());

  this->MarkVariableAsUsed("CMAKE_PARENT_LIST_FILE");
  this->MarkVariableAsUsed("CMAKE_CURRENT_LIST_FILE");
  this->MarkVariableAsUsed("CMAKE_CURRENT_LIST_DIR");

  // Run the parsed commands.
  const size_t numberFunctions = listFile.Functions.size();
  for(size_t i =0; i < numberFunctions; ++i)
    {
    cmExecutionStatus status;
    this->ExecuteCommand(listFile.Functions[i],status);
    if(cmSystemTools::GetFatalErrorOccured())
      {
      break;
      }
    if(status.GetReturnInvoked())
      {
      // Exit early due to return command.
      break;
      }
    }
  this->CheckForUnusedVariables();

  this->AddDefinition("CMAKE_PARENT_LIST_FILE", currentParentFile.c_str());
  this->AddDefinition("CMAKE_CURRENT_LIST_FILE", currentFile.c_str());
  this->AddDefinition("CMAKE_CURRENT_LIST_DIR",
                      cmSystemTools::GetFilenamePath(currentFile).c_str());
  this->MarkVariableAsUsed("CMAKE_PARENT_LIST_FILE");
  this->MarkVariableAsUsed("CMAKE_CURRENT_LIST_FILE");
  this->MarkVariableAsUsed("CMAKE_CURRENT_LIST_DIR");
}

//----------------------------------------------------------------------------
void cmMakefile::EnforceDirectoryLevelRules() const
{
  // Diagnose a violation of CMP0000 if necessary.
  if(this->CheckCMP0000)
    {
    std::ostringstream msg;
    msg << "No cmake_minimum_required command is present.  "
        << "A line of code such as\n"
        << "  cmake_minimum_required(VERSION "
        << cmVersion::GetMajorVersion() << "."
        << cmVersion::GetMinorVersion()
        << ")\n"
        << "should be added at the top of the file.  "
        << "The version specified may be lower if you wish to "
        << "support older CMake versions for this project.  "
        << "For more information run "
        << "\"cmake --help-policy CMP0000\".";
    switch (this->GetPolicyStatus(cmPolicies::CMP0000))
      {
      case cmPolicies::WARN:
        // Warn because the user did not provide a mimimum required
        // version.
        this->IssueMessage(cmake::AUTHOR_WARNING, msg.str());
      case cmPolicies::OLD:
        // OLD behavior is to use policy version 2.4 set in
        // cmListFileCache.
        break;
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
      case cmPolicies::NEW:
        // NEW behavior is to issue an error.
        this->IssueMessage(cmake::FATAL_ERROR, msg.str());
        cmSystemTools::SetFatalErrorOccured();
        return;
      }
    }
}

void cmMakefile::AddEvaluationFile(const std::string& inputFile,
                     cmsys::auto_ptr<cmCompiledGeneratorExpression> outputName,
                     cmsys::auto_ptr<cmCompiledGeneratorExpression> condition,
                     bool inputIsContent)
{
  this->EvaluationFiles.push_back(
              new cmGeneratorExpressionEvaluationFile(inputFile, outputName,
                                                      condition,
                                                      inputIsContent));
}

std::vector<cmGeneratorExpressionEvaluationFile*>
cmMakefile::GetEvaluationFiles() const
{
  return this->EvaluationFiles;
}

std::vector<cmExportBuildFileGenerator*>
cmMakefile::GetExportBuildFileGenerators() const
{
  return this->ExportBuildFileGenerators;
}

void cmMakefile::RemoveExportBuildFileGeneratorCMP0024(
    cmExportBuildFileGenerator* gen)
{
  std::vector<cmExportBuildFileGenerator*>::iterator it =
      std::find(this->ExportBuildFileGenerators.begin(),
                this->ExportBuildFileGenerators.end(), gen);
  if(it != this->ExportBuildFileGenerators.end())
    {
    this->ExportBuildFileGenerators.erase(it);
    }
}

void cmMakefile::AddExportBuildFileGenerator(cmExportBuildFileGenerator* gen)
{
  this->ExportBuildFileGenerators.push_back(gen);
}

namespace
{
  struct file_not_persistent
  {
    bool operator()(const std::string& path) const
      {
      return !(path.find("CMakeTmp") == path.npos &&
               cmSystemTools::FileExists(path.c_str()));
      }
  };
}

void cmMakefile::FinalPass()
{
  // do all the variable expansions here
  this->ExpandVariablesCMP0019();

  // give all the commands a chance to do something
  // after the file has been parsed before generation
  for(std::vector<cmCommand*>::iterator i = this->FinalPassCommands.begin();
      i != this->FinalPassCommands.end(); ++i)
    {
    (*i)->FinalPass();
    }

  //go through all configured files and see which ones still exist.
  //we don't want cmake to re-run if a configured file is created and deleted
  //during processing as that would make it a transient file that can't
  //influence the build process

  //remove_if will move all items that don't have a valid file name to the
  //back of the vector
  std::vector<std::string>::iterator new_output_files_end = std::remove_if(
                                                     this->OutputFiles.begin(),
                                                     this->OutputFiles.end(),
                                                     file_not_persistent() );
  //we just have to erase all items at the back
  this->OutputFiles.erase(new_output_files_end, this->OutputFiles.end() );

  //if a configured file is used as input for another configured file,
  //and then deleted it will show up in the input list files so we
  //need to scan those too
  std::vector<std::string>::iterator new_list_files_end = std::remove_if(
                                                   this->ListFiles.begin(),
                                                   this->ListFiles.end(),
                                                   file_not_persistent() );

  this->ListFiles.erase(new_list_files_end, this->ListFiles.end() );
}

// Generate the output file
void cmMakefile::ConfigureFinalPass()
{
  this->FinalPass();
  const char* oldValue
    = this->GetDefinition("CMAKE_BACKWARDS_COMPATIBILITY");
  if (oldValue && cmSystemTools::VersionCompare(
        cmSystemTools::OP_LESS, oldValue, "2.4"))
    {
    this->IssueMessage(
      cmake::FATAL_ERROR,
      "You have set CMAKE_BACKWARDS_COMPATIBILITY to a CMake version less "
      "than 2.4. This version of CMake only supports backwards compatibility "
      "with CMake 2.4 or later. For compatibility with older versions please "
      "use any CMake 2.8.x release or lower.");
    }
#if defined(_WIN32) && !defined(__CYGWIN__)
  // Do old-style link dependency analysis only for CM_USE_OLD_VS6.
  if(this->GetGlobalGenerator()->IsForVS6())
    {
    for (cmTargets::iterator l = this->Targets.begin();
         l != this->Targets.end(); l++)
      {
      if (l->second.GetType() == cmState::INTERFACE_LIBRARY)
        {
        continue;
        }
      // Erase any cached link information that might have been comptued
      // on-demand during the configuration.  This ensures that build
      // system generation uses up-to-date information even if other cache
      // invalidation code in this source file is buggy.

      l->second.AnalyzeLibDependenciesForVS6(*this);
      }
    }
#endif
}

//----------------------------------------------------------------------------
void
cmMakefile::AddCustomCommandToTarget(const std::string& target,
                                   const std::vector<std::string>& byproducts,
                                     const std::vector<std::string>& depends,
                                     const cmCustomCommandLines& commandLines,
                                     cmTarget::CustomCommandType type,
                                     const char* comment,
                                     const char* workingDir,
                                     bool escapeOldStyle,
                                     bool uses_terminal)
{
  // Find the target to which to add the custom command.
  cmTargets::iterator ti = this->Targets.find(target);

  if(ti == this->Targets.end())
    {
    cmake::MessageType messageType = cmake::AUTHOR_WARNING;
    bool issueMessage = false;
    std::ostringstream e;
    switch(this->GetPolicyStatus(cmPolicies::CMP0040))
      {
      case cmPolicies::WARN:
        e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0040) << "\n";
        issueMessage = true;
      case cmPolicies::OLD:
        break;
      case cmPolicies::NEW:
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
        issueMessage = true;
        messageType = cmake::FATAL_ERROR;
      }

    if(issueMessage)
      {
      e << "The target name \"" << target << "\" is unknown in this context.";
      IssueMessage(messageType, e.str());
      }

      return;
    }

  if(ti->second.GetType() == cmState::OBJECT_LIBRARY)
    {
    std::ostringstream e;
    e << "Target \"" << target << "\" is an OBJECT library "
      "that may not have PRE_BUILD, PRE_LINK, or POST_BUILD commands.";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return;
    }
  if(ti->second.GetType() == cmState::INTERFACE_LIBRARY)
    {
    std::ostringstream e;
    e << "Target \"" << target << "\" is an INTERFACE library "
      "that may not have PRE_BUILD, PRE_LINK, or POST_BUILD commands.";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return;
    }

  // Always create the byproduct sources and mark them generated.
  for(std::vector<std::string>::const_iterator o = byproducts.begin();
      o != byproducts.end(); ++o)
    {
    if(cmSourceFile* out = this->GetOrCreateSource(*o, true))
      {
      out->SetProperty("GENERATED", "1");
      }
    }

  // Add the command to the appropriate build step for the target.
  std::vector<std::string> no_output;
  cmCustomCommand cc(this, no_output, byproducts, depends,
                     commandLines, comment, workingDir);
  cc.SetEscapeOldStyle(escapeOldStyle);
  cc.SetEscapeAllowMakeVars(true);
  cc.SetUsesTerminal(uses_terminal);
  switch(type)
    {
    case cmTarget::PRE_BUILD:
      ti->second.AddPreBuildCommand(cc);
      break;
    case cmTarget::PRE_LINK:
      ti->second.AddPreLinkCommand(cc);
      break;
    case cmTarget::POST_BUILD:
      ti->second.AddPostBuildCommand(cc);
      break;
    }
}

//----------------------------------------------------------------------------
cmSourceFile*
cmMakefile::AddCustomCommandToOutput(const std::vector<std::string>& outputs,
                                  const std::vector<std::string>& byproducts,
                                     const std::vector<std::string>& depends,
                                     const std::string& main_dependency,
                                     const cmCustomCommandLines& commandLines,
                                     const char* comment,
                                     const char* workingDir,
                                     bool replace,
                                     bool escapeOldStyle,
                                     bool uses_terminal)
{
  // Make sure there is at least one output.
  if(outputs.empty())
    {
    cmSystemTools::Error("Attempt to add a custom rule with no output!");
    return 0;
    }

  // Validate custom commands.  TODO: More strict?
  for(cmCustomCommandLines::const_iterator i=commandLines.begin();
      i != commandLines.end(); ++i)
    {
    cmCustomCommandLine const& cl = *i;
    if(!cl.empty() && !cl[0].empty() && cl[0][0] == '"')
      {
      std::ostringstream e;
      e << "COMMAND may not contain literal quotes:\n  " << cl[0] << "\n";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return 0;
      }
    }

  // Choose a source file on which to store the custom command.
  cmSourceFile* file = 0;
  if(!commandLines.empty() && !main_dependency.empty())
    {
    // The main dependency was specified.  Use it unless a different
    // custom command already used it.
    file = this->GetSource(main_dependency);
    if(file && file->GetCustomCommand() && !replace)
      {
      // The main dependency already has a custom command.
      if(commandLines == file->GetCustomCommand()->GetCommandLines())
        {
        // The existing custom command is identical.  Silently ignore
        // the duplicate.
        return file;
        }
      else
        {
        // The existing custom command is different.  We need to
        // generate a rule file for this new command.
        file = 0;
        }
      }
    else if (!file)
      {
      file = this->CreateSource(main_dependency);
      }
    }

  // Generate a rule file if the main dependency is not available.
  if(!file)
    {
    cmGlobalGenerator* gg = this->GetGlobalGenerator();

    // Construct a rule file associated with the first output produced.
    std::string outName = gg->GenerateRuleFile(outputs[0]);

    // Check if the rule file already exists.
    file = this->GetSource(outName);
    if(file && file->GetCustomCommand() && !replace)
      {
      // The rule file already exists.
      if(commandLines != file->GetCustomCommand()->GetCommandLines())
        {
        cmSystemTools::Error("Attempt to add a custom rule to output \"",
                             outName.c_str(),
                             "\" which already has a custom rule.");
        }
      return file;
      }

    // Create a cmSourceFile for the rule file.
    if (!file)
      {
      file = this->CreateSource(outName, true);
      }
    file->SetProperty("__CMAKE_RULE", "1");
    }

  // Always create the output sources and mark them generated.
  for(std::vector<std::string>::const_iterator o = outputs.begin();
      o != outputs.end(); ++o)
    {
    if(cmSourceFile* out = this->GetOrCreateSource(*o, true))
      {
      out->SetProperty("GENERATED", "1");
      }
    }
  for(std::vector<std::string>::const_iterator o = byproducts.begin();
      o != byproducts.end(); ++o)
    {
    if(cmSourceFile* out = this->GetOrCreateSource(*o, true))
      {
      out->SetProperty("GENERATED", "1");
      }
    }

  // Attach the custom command to the file.
  if(file)
    {
    // Construct a complete list of dependencies.
    std::vector<std::string> depends2(depends);
    if(!main_dependency.empty())
      {
      depends2.push_back(main_dependency);
      }

    cmCustomCommand* cc =
      new cmCustomCommand(this, outputs, byproducts, depends2,
                          commandLines, comment, workingDir);
    cc->SetEscapeOldStyle(escapeOldStyle);
    cc->SetEscapeAllowMakeVars(true);
    cc->SetUsesTerminal(uses_terminal);
    file->SetCustomCommand(cc);
    this->UpdateOutputToSourceMap(outputs, file);
    }
  return file;
}

//----------------------------------------------------------------------------
void
cmMakefile::UpdateOutputToSourceMap(std::vector<std::string> const& outputs,
                                    cmSourceFile* source)
{
  for(std::vector<std::string>::const_iterator o = outputs.begin();
      o != outputs.end(); ++o)
    {
    this->UpdateOutputToSourceMap(*o, source);
    }
}

//----------------------------------------------------------------------------
void
cmMakefile::UpdateOutputToSourceMap(std::string const& output,
                                    cmSourceFile* source)
{
  OutputToSourceMap::iterator i = this->OutputToSource.find(output);
  if(i != this->OutputToSource.end())
    {
    // Multiple custom commands produce the same output but may
    // be attached to a different source file (MAIN_DEPENDENCY).
    // LinearGetSourceFileWithOutput would return the first one,
    // so keep the mapping for the first one.
    //
    // TODO: Warn the user about this case.  However, the VS 8 generator
    // triggers it for separate generate.stamp rules in ZERO_CHECK and
    // individual targets.
    return;
    }
  this->OutputToSource[output] = source;
}

//----------------------------------------------------------------------------
cmSourceFile*
cmMakefile::AddCustomCommandToOutput(const std::string& output,
                                     const std::vector<std::string>& depends,
                                     const std::string& main_dependency,
                                     const cmCustomCommandLines& commandLines,
                                     const char* comment,
                                     const char* workingDir,
                                     bool replace,
                                     bool escapeOldStyle,
                                     bool uses_terminal)
{
  std::vector<std::string> outputs;
  outputs.push_back(output);
  std::vector<std::string> no_byproducts;
  return this->AddCustomCommandToOutput(outputs, no_byproducts,
                                        depends, main_dependency,
                                        commandLines, comment, workingDir,
                                        replace, escapeOldStyle,
                                        uses_terminal);
}

//----------------------------------------------------------------------------
void
cmMakefile::AddCustomCommandOldStyle(const std::string& target,
                                     const std::vector<std::string>& outputs,
                                     const std::vector<std::string>& depends,
                                     const std::string& source,
                                     const cmCustomCommandLines& commandLines,
                                     const char* comment)
{
  // Translate the old-style signature to one of the new-style
  // signatures.
  if(source == target)
    {
    // In the old-style signature if the source and target were the
    // same then it added a post-build rule to the target.  Preserve
    // this behavior.
    std::vector<std::string> no_byproducts;
    this->AddCustomCommandToTarget(target, no_byproducts,
                                   depends, commandLines,
                                   cmTarget::POST_BUILD, comment, 0);
    return;
    }

  // Each output must get its own copy of this rule.
  cmsys::RegularExpression sourceFiles("\\.(C|M|c|c\\+\\+|cc|cpp|cxx|m|mm|"
                                       "rc|def|r|odl|idl|hpj|bat|h|h\\+\\+|"
                                       "hm|hpp|hxx|in|txx|inl)$");
  for(std::vector<std::string>::const_iterator oi = outputs.begin();
      oi != outputs.end(); ++oi)
    {
    // Get the name of this output.
    const char* output = oi->c_str();
    cmSourceFile* sf;

    // Choose whether to use a main dependency.
    if(sourceFiles.find(source))
      {
      // The source looks like a real file.  Use it as the main dependency.
      sf = this->AddCustomCommandToOutput(output, depends, source,
                                          commandLines, comment, 0);
      }
    else
      {
      // The source may not be a real file.  Do not use a main dependency.
      std::string no_main_dependency = "";
      std::vector<std::string> depends2 = depends;
      depends2.push_back(source);
      sf = this->AddCustomCommandToOutput(output, depends2, no_main_dependency,
                                          commandLines, comment, 0);
      }

    // If the rule was added to the source (and not a .rule file),
    // then add the source to the target to make sure the rule is
    // included.
    if(sf && !sf->GetPropertyAsBool("__CMAKE_RULE"))
      {
      if (this->Targets.find(target) != this->Targets.end())
        {
        this->Targets[target].AddSource(sf->GetFullPath());
        }
      else
        {
        cmSystemTools::Error("Attempt to add a custom rule to a target "
                             "that does not exist yet for target ",
                             target.c_str());
        return;
        }
      }
    }
}

//----------------------------------------------------------------------------
cmTarget*
cmMakefile::AddUtilityCommand(const std::string& utilityName,
                              bool excludeFromAll,
                              const std::vector<std::string>& depends,
                              const char* workingDirectory,
                              const char* command,
                              const char* arg1,
                              const char* arg2,
                              const char* arg3,
                              const char* arg4)
{
  // Construct the command line for the custom command.
  cmCustomCommandLine commandLine;
  commandLine.push_back(command);
  if(arg1)
    {
    commandLine.push_back(arg1);
    }
  if(arg2)
    {
    commandLine.push_back(arg2);
    }
  if(arg3)
    {
    commandLine.push_back(arg3);
    }
  if(arg4)
    {
    commandLine.push_back(arg4);
    }
  cmCustomCommandLines commandLines;
  commandLines.push_back(commandLine);

  // Call the real signature of this method.
  return this->AddUtilityCommand(utilityName, excludeFromAll, workingDirectory,
                                 depends, commandLines);
}

//----------------------------------------------------------------------------
cmTarget*
cmMakefile::AddUtilityCommand(const std::string& utilityName,
                              bool excludeFromAll,
                              const char* workingDirectory,
                              const std::vector<std::string>& depends,
                              const cmCustomCommandLines& commandLines,
                              bool escapeOldStyle, const char* comment,
                              bool uses_terminal)
{
  std::vector<std::string> no_byproducts;
  return this->AddUtilityCommand(utilityName, excludeFromAll, workingDirectory,
                                 no_byproducts, depends, commandLines,
                                 escapeOldStyle, comment, uses_terminal);
}

//----------------------------------------------------------------------------
cmTarget*
cmMakefile::AddUtilityCommand(const std::string& utilityName,
                              bool excludeFromAll,
                              const char* workingDirectory,
                              const std::vector<std::string>& byproducts,
                              const std::vector<std::string>& depends,
                              const cmCustomCommandLines& commandLines,
                              bool escapeOldStyle, const char* comment,
                              bool uses_terminal)
{
  // Create a target instance for this utility.
  cmTarget* target = this->AddNewTarget(cmState::UTILITY, utilityName);
  if (excludeFromAll)
    {
    target->SetProperty("EXCLUDE_FROM_ALL", "TRUE");
    }
  if(!comment)
    {
    // Use an empty comment to avoid generation of default comment.
    comment = "";
    }

  // Store the custom command in the target.
  if (!commandLines.empty() || !depends.empty())
    {
    std::string force = this->GetCurrentBinaryDirectory();
    force += cmake::GetCMakeFilesDirectory();
    force += "/";
    force += utilityName;
    std::vector<std::string> forced;
    forced.push_back(force);
    std::string no_main_dependency = "";
    bool no_replace = false;
    this->AddCustomCommandToOutput(forced, byproducts,
                                   depends, no_main_dependency,
                                   commandLines, comment,
                                   workingDirectory, no_replace,
                                   escapeOldStyle, uses_terminal);
    cmSourceFile* sf = target->AddSourceCMP0049(force);

    // The output is not actually created so mark it symbolic.
    if(sf)
      {
      sf->SetProperty("SYMBOLIC", "1");
      }
    else
      {
      cmSystemTools::Error("Could not get source file entry for ",
                          force.c_str());
      }

    // Always create the byproduct sources and mark them generated.
    for(std::vector<std::string>::const_iterator o = byproducts.begin();
        o != byproducts.end(); ++o)
      {
      if(cmSourceFile* out = this->GetOrCreateSource(*o, true))
        {
        out->SetProperty("GENERATED", "1");
        }
      }
    }
  return target;
}

void cmMakefile::AddDefineFlag(const char* flag)
{
  if (!flag)
    {
    return;
    }

  // Update the string used for the old DEFINITIONS property.
  this->AddDefineFlag(flag, this->DefineFlagsOrig);

  // If this is really a definition, update COMPILE_DEFINITIONS.
  if(this->ParseDefineFlag(flag, false))
    {
    return;
    }

  // Add this flag that does not look like a definition.
  this->AddDefineFlag(flag, this->DefineFlags);
}

void cmMakefile::AddDefineFlag(const char* flag, std::string& dflags)
{
  // remove any \n\r
  std::string::size_type initSize = dflags.size();
  dflags += std::string(" ") + flag;
  std::string::iterator flagStart = dflags.begin() + initSize + 1;
  std::replace(flagStart, dflags.end(), '\n', ' ');
  std::replace(flagStart, dflags.end(), '\r', ' ');
}


void cmMakefile::RemoveDefineFlag(const char* flag)
{
  // Check the length of the flag to remove.
  std::string::size_type len = strlen(flag);
  if(len < 1)
    {
    return;
    }

  // Update the string used for the old DEFINITIONS property.
  this->RemoveDefineFlag(flag, len, this->DefineFlagsOrig);

  // If this is really a definition, update COMPILE_DEFINITIONS.
  if(this->ParseDefineFlag(flag, true))
    {
    return;
    }

  // Remove this flag that does not look like a definition.
  this->RemoveDefineFlag(flag, len, this->DefineFlags);
}

void cmMakefile::RemoveDefineFlag(const char* flag,
                                  std::string::size_type len,
                                  std::string& dflags)
{
  // Remove all instances of the flag that are surrounded by
  // whitespace or the beginning/end of the string.
  for(std::string::size_type lpos = dflags.find(flag, 0);
      lpos != std::string::npos; lpos = dflags.find(flag, lpos))
    {
    std::string::size_type rpos = lpos + len;
    if((lpos <= 0 || isspace(dflags[lpos-1])) &&
       (rpos >= dflags.size() || isspace(dflags[rpos])))
      {
      dflags.erase(lpos, len);
      }
    else
      {
      ++lpos;
      }
    }
}

void cmMakefile::AddCompileOption(const char* option)
{
  this->AppendProperty("COMPILE_OPTIONS", option);
}

bool cmMakefile::ParseDefineFlag(std::string const& def, bool remove)
{
  // Create a regular expression to match valid definitions.
  static cmsys::RegularExpression
    valid("^[-/]D[A-Za-z_][A-Za-z0-9_]*(=.*)?$");

  // Make sure the definition matches.
  if(!valid.find(def.c_str()))
    {
    return false;
    }

  // VS6 IDE does not support definition values with spaces in
  // combination with '"', '$', or ';'.
  if((this->GetGlobalGenerator()->GetName() == "Visual Studio 6") &&
     (def.find(" ") != def.npos && def.find_first_of("\"$;") != def.npos))
    {
    return false;
    }

  // Definitions with non-trivial values require a policy check.
  static cmsys::RegularExpression
    trivial("^[-/]D[A-Za-z_][A-Za-z0-9_]*(=[A-Za-z0-9_.]+)?$");
  if(!trivial.find(def.c_str()))
    {
    // This definition has a non-trivial value.
    switch(this->GetPolicyStatus(cmPolicies::CMP0005))
      {
      case cmPolicies::WARN:
        this->IssueMessage(
          cmake::AUTHOR_WARNING,
          cmPolicies::GetPolicyWarning(cmPolicies::CMP0005)
          );
      case cmPolicies::OLD:
        // OLD behavior is to not escape the value.  We should not
        // convert the definition to use the property.
        return false;
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
        this->IssueMessage(
          cmake::FATAL_ERROR,
          cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0005)
          );
        return false;
      case cmPolicies::NEW:
        // NEW behavior is to escape the value.  Proceed to convert it
        // to an entry in the property.
        break;
      }
    }

  // Get the definition part after the flag.
  const char* define = def.c_str() + 2;

  if(remove)
    {
    if(const char* cdefs = this->GetProperty("COMPILE_DEFINITIONS"))
      {
      // Expand the list.
      std::vector<std::string> defs;
      cmSystemTools::ExpandListArgument(cdefs, defs);

      // Recompose the list without the definition.
      std::vector<std::string>::const_iterator defEnd =
          std::remove(defs.begin(), defs.end(), define);
      std::vector<std::string>::const_iterator defBegin =
          defs.begin();
      std::string ndefs = cmJoin(cmMakeRange(defBegin, defEnd), ";");

      // Store the new list.
      this->SetProperty("COMPILE_DEFINITIONS", ndefs.c_str());
      }
    }
  else
    {
    // Append the definition to the directory property.
    this->AppendProperty("COMPILE_DEFINITIONS", define);
    }

  return true;
}

void cmMakefile::AddLinkLibrary(const std::string& lib,
                                cmTargetLinkLibraryType llt)
{
  cmTarget::LibraryID tmp;
  tmp.first = lib;
  tmp.second = llt;
  this->LinkLibraries.push_back(tmp);
}

void cmMakefile::AddLinkLibraryForTarget(const std::string& target,
                                         const std::string& lib,
                                         cmTargetLinkLibraryType llt)
{
  cmTargets::iterator i = this->Targets.find(target);
  if ( i != this->Targets.end())
    {
    cmTarget* tgt = this->GetGlobalGenerator()->FindTarget(lib);
    if(tgt)
      {
      // if it is not a static or shared library then you can not link to it
      if(!((tgt->GetType() == cmState::STATIC_LIBRARY) ||
           (tgt->GetType() == cmState::SHARED_LIBRARY) ||
           (tgt->GetType() == cmState::INTERFACE_LIBRARY) ||
           tgt->IsExecutableWithExports()))
        {
        std::ostringstream e;
        e << "Target \"" << lib << "\" of type "
          << cmState::GetTargetTypeName(tgt->GetType())
          << " may not be linked into another target.  "
          << "One may link only to STATIC or SHARED libraries, or "
          << "to executables with the ENABLE_EXPORTS property set.";
        this->IssueMessage(cmake::FATAL_ERROR, e.str());
        }
      }
    i->second.AddLinkLibrary( *this, target, lib, llt );
    }
  else
    {
    std::ostringstream e;
    e << "Attempt to add link library \""
      << lib << "\" to target \""
      << target << "\" which is not built in this directory.";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    }
}

void cmMakefile::AddLinkDirectoryForTarget(const std::string& target,
                                           const std::string& d)
{
  cmTargets::iterator i = this->Targets.find(target);
  if ( i != this->Targets.end())
    {
    if(this->IsAlias(target))
      {
      std::ostringstream e;
      e << "ALIAS target \"" << target << "\" "
        << "may not be linked into another target.";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return;
      }
    i->second.AddLinkDirectory( d );
    }
  else
    {
    cmSystemTools::Error
      ("Attempt to add link directories to non-existent target: ",
       target.c_str(), " for directory ", d.c_str());
    }
}

void cmMakefile::AddLinkLibrary(const std::string& lib)
{
  this->AddLinkLibrary(lib,GENERAL_LibraryType);
}

void cmMakefile::InitializeFromParent(cmMakefile* parent)
{
  this->SystemIncludeDirectories = parent->SystemIncludeDirectories;

  // define flags
  this->DefineFlags = parent->DefineFlags;
  this->DefineFlagsOrig = parent->DefineFlagsOrig;

  // Include transform property.  There is no per-config version.
  {
  const char* prop = "IMPLICIT_DEPENDS_INCLUDE_TRANSFORM";
  this->SetProperty(prop, parent->GetProperty(prop));
  }

  // compile definitions property and per-config versions
  cmPolicies::PolicyStatus polSt = this->GetPolicyStatus(cmPolicies::CMP0043);
  if (polSt == cmPolicies::WARN || polSt == cmPolicies::OLD)
    {
    this->SetProperty("COMPILE_DEFINITIONS",
                      parent->GetProperty("COMPILE_DEFINITIONS"));
    std::vector<std::string> configs;
    this->GetConfigurations(configs);
    for(std::vector<std::string>::const_iterator ci = configs.begin();
        ci != configs.end(); ++ci)
      {
      std::string defPropName = "COMPILE_DEFINITIONS_";
      defPropName += cmSystemTools::UpperCase(*ci);
      const char* prop = parent->GetProperty(defPropName);
      this->SetProperty(defPropName, prop);
      }
    }

  // link libraries
  this->LinkLibraries = parent->LinkLibraries;

  // link directories
  this->SetProperty("LINK_DIRECTORIES",
                    parent->GetProperty("LINK_DIRECTORIES"));

  // the initial project name
  this->StateSnapshot.SetProjectName(parent->StateSnapshot.GetProjectName());

  // Copy include regular expressions.
  this->ComplainFileRegularExpression = parent->ComplainFileRegularExpression;

  // Imported targets.
  this->ImportedTargets = parent->ImportedTargets;
}

void cmMakefile::PushFunctionScope(std::string const& fileName,
                                   const cmPolicies::PolicyMap& pm)
{
  this->StateSnapshot =
      this->GetState()->CreateFunctionCallSnapshot(
        this->StateSnapshot,
        this->ContextStack.back()->Name, this->ContextStack.back()->Line,
        fileName);
  assert(this->StateSnapshot.IsValid());

  this->PushLoopBlockBarrier();

#if defined(CMAKE_BUILD_WITH_CMAKE)
  this->GetGlobalGenerator()->GetFileLockPool().PushFunctionScope();
#endif

  this->PushFunctionBlockerBarrier();

  this->PushPolicy(true, pm);
}

void cmMakefile::PopFunctionScope(bool reportError)
{
  this->PopPolicy();

  this->PopSnapshot(reportError);

  this->PopFunctionBlockerBarrier(reportError);

#if defined(CMAKE_BUILD_WITH_CMAKE)
  this->GetGlobalGenerator()->GetFileLockPool().PopFunctionScope();
#endif

  this->PopLoopBlockBarrier();

  this->CheckForUnusedVariables();
}

void cmMakefile::PushMacroScope(std::string const& fileName,
                                const cmPolicies::PolicyMap& pm)
{
  this->StateSnapshot =
      this->GetState()->CreateMacroCallSnapshot(
        this->StateSnapshot,
        this->ContextStack.back()->Name, this->ContextStack.back()->Line,
        fileName);
  assert(this->StateSnapshot.IsValid());

  this->PushFunctionBlockerBarrier();

  this->PushPolicy(true, pm);
}

void cmMakefile::PopMacroScope(bool reportError)
{
  this->PopPolicy();
  this->PopSnapshot(reportError);

  this->PopFunctionBlockerBarrier(reportError);
}

bool cmMakefile::IsRootMakefile() const
{
  return !this->StateSnapshot.GetBuildsystemDirectoryParent().IsValid();
}

class cmMakefile::BuildsystemFileScope
{
public:
  BuildsystemFileScope(cmMakefile* mf)
    : Makefile(mf), ReportError(true)
  {
    std::string currentStart =
        this->Makefile->StateSnapshot.GetDirectory().GetCurrentSource();
    currentStart += "/CMakeLists.txt";
    this->Makefile->StateSnapshot.SetListFile(currentStart);
    this->Makefile->StateSnapshot = this->Makefile->StateSnapshot.GetState()
        ->CreatePolicyScopeSnapshot(this->Makefile->StateSnapshot);
    this->Makefile->PushFunctionBlockerBarrier();

    this->GG = mf->GetGlobalGenerator();
    this->CurrentMakefile = this->GG->GetCurrentMakefile();
    this->Snapshot = this->GG->GetCMakeInstance()->GetCurrentSnapshot();
    this->GG->GetCMakeInstance()->SetCurrentSnapshot(this->Snapshot);
    this->GG->SetCurrentMakefile(mf);
#if defined(CMAKE_BUILD_WITH_CMAKE)
    this->GG->GetFileLockPool().PushFileScope();
#endif
  }

  ~BuildsystemFileScope()
  {
    this->Makefile->PopFunctionBlockerBarrier(this->ReportError);
    this->Makefile->PopSnapshot(this->ReportError);
#if defined(CMAKE_BUILD_WITH_CMAKE)
    this->GG->GetFileLockPool().PopFileScope();
#endif
    this->GG->SetCurrentMakefile(this->CurrentMakefile);
    this->GG->GetCMakeInstance()->SetCurrentSnapshot(this->Snapshot);
  }

  void Quiet() { this->ReportError = false; }
private:
  cmMakefile* Makefile;
  cmGlobalGenerator* GG;
  cmMakefile* CurrentMakefile;
  cmState::Snapshot Snapshot;
  bool ReportError;
};

//----------------------------------------------------------------------------
void cmMakefile::Configure()
{
  BuildsystemFileScope scope(this);

  // make sure the CMakeFiles dir is there
  std::string filesDir = this->StateSnapshot.GetDirectory().GetCurrentBinary();
  filesDir += cmake::GetCMakeFilesDirectory();
  cmSystemTools::MakeDirectory(filesDir.c_str());

  std::string currentStart =
      this->StateSnapshot.GetDirectory().GetCurrentSource();
  currentStart += "/CMakeLists.txt";
  assert(cmSystemTools::FileExists(currentStart.c_str(), true));
  this->AddDefinition("CMAKE_PARENT_LIST_FILE", currentStart.c_str());

  cmListFile listFile;
  {
  cmParseFileScope pfs(this);
  if (!listFile.ParseFile(currentStart.c_str(), this->IsRootMakefile(), this))
    {
    return;
    }
  }
  this->ReadListFile(listFile, currentStart);
  if(cmSystemTools::GetFatalErrorOccured())
    {
    scope.Quiet();
    }

   // at the end handle any old style subdirs
  std::vector<cmMakefile*> subdirs = this->UnConfiguredDirectories;

  // for each subdir recurse
  std::vector<cmMakefile*>::iterator sdi = subdirs.begin();
  for (; sdi != subdirs.end(); ++sdi)
    {
    (*sdi)->StateSnapshot.InitializeFromParent_ForSubdirsCommand();
    this->ConfigureSubDirectory(*sdi);
    }

  this->AddCMakeDependFilesFromUser();
}

void cmMakefile::ConfigureSubDirectory(cmMakefile *mf)
{
  mf->InitializeFromParent(this);
  std::string currentStart = mf->GetCurrentSourceDirectory();
  if (this->GetCMakeInstance()->GetDebugOutput())
    {
    std::string msg="   Entering             ";
    msg += currentStart;
    cmSystemTools::Message(msg.c_str());
    }

  std::string const currentStartFile = currentStart + "/CMakeLists.txt";
  if (!cmSystemTools::FileExists(currentStartFile, true))
    {
    // The file is missing.  Check policy CMP0014.
    std::ostringstream e;
    e << "The source directory\n"
      << "  " << currentStart << "\n"
      << "does not contain a CMakeLists.txt file.";
    switch (this->GetPolicyStatus(cmPolicies::CMP0014))
      {
      case cmPolicies::WARN:
        // Print the warning.
        e << "\n"
          << "CMake does not support this case but it used "
          << "to work accidentally and is being allowed for "
          << "compatibility."
          << "\n"
          << cmPolicies::GetPolicyWarning(cmPolicies::CMP0014);
        this->IssueMessage(cmake::AUTHOR_WARNING, e.str());
      case cmPolicies::OLD:
        // OLD behavior does not warn.
        break;
      case cmPolicies::REQUIRED_IF_USED:
      case cmPolicies::REQUIRED_ALWAYS:
        e << "\n"
          << cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0014);
      case cmPolicies::NEW:
        // NEW behavior prints the error.
        this->IssueMessage(cmake::FATAL_ERROR, e.str());
      }
    return;
    }
  // finally configure the subdir
  mf->Configure();

  if (this->GetCMakeInstance()->GetDebugOutput())
    {
    std::string msg="   Returning to         ";
    msg += this->GetCurrentSourceDirectory();
    cmSystemTools::Message(msg.c_str());
    }
}

void cmMakefile::AddSubDirectory(const std::string& srcPath,
                                 const std::string& binPath,
                                 bool excludeFromAll,
                                 bool immediate)
{
  // Make sure the binary directory is unique.
  if(!this->EnforceUniqueDir(srcPath, binPath))
    {
    return;
    }

  cmState::Snapshot newSnapshot = this->GetState()
      ->CreateBuildsystemDirectorySnapshot(this->StateSnapshot,
                                           this->ContextStack.back()->Name,
                                           this->ContextStack.back()->Line);

  newSnapshot.GetDirectory().SetCurrentSource(srcPath);
  newSnapshot.GetDirectory().SetCurrentBinary(binPath);

  cmSystemTools::MakeDirectory(binPath.c_str());

  cmMakefile* subMf = new cmMakefile(this->GlobalGenerator, newSnapshot);
  this->GetGlobalGenerator()->AddMakefile(subMf);

  if(excludeFromAll)
    {
    subMf->SetProperty("EXCLUDE_FROM_ALL", "TRUE");
    }

  if (immediate)
    {
    this->ConfigureSubDirectory(subMf);
    }
  else
    {
    this->UnConfiguredDirectories.push_back(subMf);
    }
}

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

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

std::vector<cmTarget*> cmMakefile::GetImportedTargets() const
{
  std::vector<cmTarget*> tgts;
  tgts.reserve(this->ImportedTargets.size());
  for (TargetMap::const_iterator it = this->ImportedTargets.begin();
       it != this->ImportedTargets.end(); ++it)
    {
    tgts.push_back(it->second);
    }
  return tgts;
}

//----------------------------------------------------------------------------
void cmMakefile::AddIncludeDirectories(const std::vector<std::string> &incs,
                                       bool before)
{
  if (incs.empty())
    {
    return;
    }

  cmListFileBacktrace lfbt = this->GetBacktrace();
  std::string entryString = cmJoin(incs, ";");
  if (before)
    {
    this->StateSnapshot.GetDirectory()
          .PrependIncludeDirectoriesEntry(entryString, lfbt);
    }
  else
    {
    this->StateSnapshot.GetDirectory()
          .AppendIncludeDirectoriesEntry(entryString, lfbt);
    }

  // Property on each target:
  for (cmTargets::iterator l = this->Targets.begin();
       l != this->Targets.end(); ++l)
    {
    cmTarget &t = l->second;
    t.InsertInclude(entryString, lfbt, before);
    }
}

//----------------------------------------------------------------------------
void
cmMakefile::AddSystemIncludeDirectories(const std::set<std::string> &incs)
{
  this->SystemIncludeDirectories.insert(incs.begin(), incs.end());

  for (cmTargets::iterator l = this->Targets.begin();
       l != this->Targets.end(); ++l)
    {
    cmTarget &t = l->second;
    t.AddSystemIncludeDirectories(incs);
    }
}

void cmMakefile::AddDefinition(const std::string& name, const char* value)
{
  if (!value )
    {
    return;
    }

  if (this->VariableInitialized(name))
    {
    this->LogUnused("changing definition", name);
    }
  this->StateSnapshot.SetDefinition(name, value);

#ifdef CMAKE_BUILD_WITH_CMAKE
  cmVariableWatch* vv = this->GetVariableWatch();
  if ( vv )
    {
    vv->VariableAccessed(name,
                         cmVariableWatch::VARIABLE_MODIFIED_ACCESS,
                         value,
                         this);
    }
#endif
}


void cmMakefile::AddCacheDefinition(const std::string& name, const char* value,
                                    const char* doc,
                                    cmState::CacheEntryType type,
                                    bool force)
{
  bool haveVal = value ? true : false;
  std::string val = haveVal ? value : "";
  const char* existingValue =
    this->GetState()->GetInitializedCacheValue(name);
  if(existingValue
      && (this->GetState()->GetCacheEntryType(name)
                                            == cmState::UNINITIALIZED))
    {
    // if this is not a force, then use the value from the cache
    // if it is a force, then use the value being passed in
    if(!force)
      {
      val = existingValue;
      haveVal = true;
      }
    if ( type == cmState::PATH || type == cmState::FILEPATH )
      {
      std::vector<std::string>::size_type cc;
      std::vector<std::string> files;
      std::string nvalue = "";
      cmSystemTools::ExpandListArgument(val, files);
      for ( cc = 0; cc < files.size(); cc ++ )
        {
        if(!cmSystemTools::IsOff(files[cc].c_str()))
          {
          files[cc] = cmSystemTools::CollapseFullPath(files[cc]);
          }
        if ( cc > 0 )
          {
          nvalue += ";";
          }
        nvalue += files[cc];
        }

      this->GetCMakeInstance()->AddCacheEntry(name, nvalue.c_str(), doc, type);
      val = this->GetState()->GetInitializedCacheValue(name);
      haveVal = true;
      }

    }
  this->GetCMakeInstance()->AddCacheEntry(name, haveVal ? val.c_str() : 0,
                                          doc, type);
  // if there was a definition then remove it
  this->StateSnapshot.RemoveDefinition(name);
}


void cmMakefile::AddDefinition(const std::string& name, bool value)
{
  if (this->VariableInitialized(name))
    {
    this->LogUnused("changing definition", name);
    }

  this->StateSnapshot.SetDefinition(name, value ? "ON" : "OFF");

#ifdef CMAKE_BUILD_WITH_CMAKE
  cmVariableWatch* vv = this->GetVariableWatch();
  if ( vv )
    {
    vv->VariableAccessed(name, cmVariableWatch::VARIABLE_MODIFIED_ACCESS,
      value?"ON":"OFF", this);
    }
#endif
}

void cmMakefile::CheckForUnusedVariables() const
{
  if (!this->WarnUnused)
    {
    return;
    }
  const std::vector<std::string>& unused = this->StateSnapshot.UnusedKeys();
  std::vector<std::string>::const_iterator it = unused.begin();
  for (; it != unused.end(); ++it)
    {
    this->LogUnused("out of scope", *it);
    }
}

void cmMakefile::MarkVariableAsUsed(const std::string& var)
{
  this->StateSnapshot.GetDefinition(var);
}

bool cmMakefile::VariableInitialized(const std::string& var) const
{
  return this->StateSnapshot.IsInitialized(var);
}

void cmMakefile::LogUnused(const char* reason,
                                const std::string& name) const
{
  if (this->WarnUnused)
    {
    std::string path;
    cmListFileContext lfc;
    if (!this->ExecutionStatusStack.empty())
      {
      lfc = this->GetExecutionContext();
      path = lfc.FilePath;
      }
    else
      {
      path = this->GetCurrentSourceDirectory();
      path += "/CMakeLists.txt";
      lfc.FilePath = path;
      lfc.Line = 0;
      }
    cmOutputConverter converter(this->StateSnapshot);
    lfc.FilePath = converter.Convert(lfc.FilePath, cmOutputConverter::HOME);

    if (this->CheckSystemVars ||
        cmSystemTools::IsSubDirectory(path,
                                      this->GetHomeDirectory()) ||
        (cmSystemTools::IsSubDirectory(path,
                                      this->GetHomeOutputDirectory()) &&
        !cmSystemTools::IsSubDirectory(path,
                                cmake::GetCMakeFilesDirectory())))
      {
      std::ostringstream msg;
      msg << "unused variable (" << reason << ") \'" << name << "\'";
      this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING,
                                             msg.str(),
                                             lfc);
      }
    }
}

void cmMakefile::RemoveDefinition(const std::string& name)
{
  if (this->VariableInitialized(name))
    {
    this->LogUnused("unsetting", name);
    }
  this->StateSnapshot.RemoveDefinition(name);
#ifdef CMAKE_BUILD_WITH_CMAKE
  cmVariableWatch* vv = this->GetVariableWatch();
  if ( vv )
    {
    vv->VariableAccessed(name, cmVariableWatch::VARIABLE_REMOVED_ACCESS,
      0, this);
    }
#endif
}

void cmMakefile::RemoveCacheDefinition(const std::string& name)
{
  this->GetState()->RemoveCacheEntry(name);
}

void cmMakefile::SetProjectName(std::string const& p)
{
  this->StateSnapshot.SetProjectName(p);
}

void cmMakefile::AddGlobalLinkInformation(const std::string& name,
                                          cmTarget& target)
{
  // for these targets do not add anything
  switch(target.GetType())
    {
    case cmState::UTILITY:
    case cmState::GLOBAL_TARGET:
    case cmState::INTERFACE_LIBRARY:
      return;
    default:;
    }
  if (const char* linkDirsProp = this->GetProperty("LINK_DIRECTORIES"))
    {
    std::vector<std::string> linkDirs;
    cmSystemTools::ExpandListArgument(linkDirsProp, linkDirs);

    for(std::vector<std::string>::iterator j = linkDirs.begin();
        j != linkDirs.end(); ++j)
      {
      std::string newdir = *j;
      // remove trailing slashes
      if(*j->rbegin() == '/')
        {
        newdir = j->substr(0, j->size()-1);
        }
      if(std::find(this->LinkDirectories.begin(),
                   this->LinkDirectories.end(), newdir)
          == this->LinkDirectories.end())
        {
        target.AddLinkDirectory(*j);
        }
      }
    }
  target.MergeLinkLibraries( *this, name, this->LinkLibraries );
}


void cmMakefile::AddAlias(const std::string& lname,
                          std::string const& tgtName)
{
  this->AliasTargets[lname] = tgtName;
  this->GetGlobalGenerator()->AddAlias(lname, tgtName);
}

cmTarget* cmMakefile::AddLibrary(const std::string& lname,
                            cmState::TargetType type,
                            const std::vector<std::string> &srcs,
                            bool excludeFromAll)
{
  // wrong type ? default to STATIC
  if (    (type != cmState::STATIC_LIBRARY)
       && (type != cmState::SHARED_LIBRARY)
       && (type != cmState::MODULE_LIBRARY)
       && (type != cmState::OBJECT_LIBRARY)
       && (type != cmState::INTERFACE_LIBRARY))
    {
    this->IssueMessage(cmake::INTERNAL_ERROR,
                       "cmMakefile::AddLibrary given invalid target type.");
    type = cmState::STATIC_LIBRARY;
    }

  cmTarget* target = this->AddNewTarget(type, lname);
  // Clear its dependencies. Otherwise, dependencies might persist
  // over changes in CMakeLists.txt, making the information stale and
  // hence useless.
  target->ClearDependencyInformation( *this, lname );
  if(excludeFromAll)
    {
    target->SetProperty("EXCLUDE_FROM_ALL", "TRUE");
    }
  target->AddSources(srcs);
  this->AddGlobalLinkInformation(lname, *target);
  return target;
}

cmTarget* cmMakefile::AddExecutable(const char *exeName,
                                    const std::vector<std::string> &srcs,
                                    bool excludeFromAll)
{
  cmTarget* target = this->AddNewTarget(cmState::EXECUTABLE, exeName);
  if(excludeFromAll)
    {
    target->SetProperty("EXCLUDE_FROM_ALL", "TRUE");
    }
  target->AddSources(srcs);
  this->AddGlobalLinkInformation(exeName, *target);
  return target;
}

//----------------------------------------------------------------------------
cmTarget*
cmMakefile::AddNewTarget(cmState::TargetType type, const std::string& name)
{
  cmTargets::iterator it =
    this->Targets.insert(cmTargets::value_type(name, cmTarget())).first;
  cmTarget& target = it->second;
  target.SetType(type, name);
  target.SetMakefile(this);
  return &it->second;
}

cmSourceFile*
cmMakefile::LinearGetSourceFileWithOutput(const std::string& name) const
{
  std::string out;

  // look through all the source files that have custom commands
  // and see if the custom command has the passed source file as an output
  for(std::vector<cmSourceFile*>::const_iterator i =
        this->SourceFiles.begin(); i != this->SourceFiles.end(); ++i)
    {
    // does this source file have a custom command?
    if ((*i)->GetCustomCommand())
      {
      // Does the output of the custom command match the source file name?
      const std::vector<std::string>& outputs =
        (*i)->GetCustomCommand()->GetOutputs();
      for(std::vector<std::string>::const_iterator o = outputs.begin();
          o != outputs.end(); ++o)
        {
        out = *o;
        std::string::size_type pos = out.rfind(name);
        // If the output matches exactly
        if (pos != out.npos &&
            pos == out.size() - name.size() &&
            (pos ==0 || out[pos-1] == '/'))
          {
          return *i;
          }
        }
      }
    }

  // otherwise return NULL
  return 0;
}

cmSourceFile *cmMakefile::GetSourceFileWithOutput(
                                                const std::string& name) const
{
  // If the queried path is not absolute we use the backward compatible
  // linear-time search for an output with a matching suffix.
  if(!cmSystemTools::FileIsFullPath(name.c_str()))
    {
    return this->LinearGetSourceFileWithOutput(name);
    }
  // Otherwise we use an efficient lookup map.
  OutputToSourceMap::const_iterator o = this->OutputToSource.find(name);
  if (o != this->OutputToSource.end())
    {
    return (*o).second;
    }
  return 0;
}

#if defined(CMAKE_BUILD_WITH_CMAKE)
cmSourceGroup*
cmMakefile::GetSourceGroup(const std::vector<std::string>&name) const
{
  cmSourceGroup* sg = 0;

  // first look for source group starting with the same as the one we want
  for (std::vector<cmSourceGroup>::const_iterator
      sgIt = this->SourceGroups.begin();
      sgIt != this->SourceGroups.end(); ++sgIt)
    {
    std::string sgName = sgIt->GetName();
    if(sgName == name[0])
      {
      sg = const_cast<cmSourceGroup*>(&(*sgIt));
      break;
      }
    }

  if(sg != 0)
    {
    // iterate through its children to find match source group
    for(unsigned int i=1; i<name.size(); ++i)
      {
      sg = sg->LookupChild(name[i].c_str());
      if(sg == 0)
        {
        break;
        }
      }
    }
  return sg;
}

void cmMakefile::AddSourceGroup(const std::string& name,
                                 const char* regex)
{
  std::vector<std::string> nameVector;
  nameVector.push_back(name);
  this->AddSourceGroup(nameVector, regex);
}

void cmMakefile::AddSourceGroup(const std::vector<std::string>& name,
                                const char* regex)
{
  cmSourceGroup* sg = 0;
  std::vector<std::string> currentName;
  int i = 0;
  const int lastElement = static_cast<int>(name.size()-1);
  for(i=lastElement; i>=0; --i)
    {
    currentName.assign(name.begin(), name.begin()+i+1);
    sg = this->GetSourceGroup(currentName);
    if(sg != 0)
      {
      break;
      }
    }

  // i now contains the index of the last found component
  if(i==lastElement)
    {
    // group already exists, replace its regular expression
    if ( regex && sg)
      {
      // We only want to set the regular expression.  If there are already
      // source files in the group, we don't want to remove them.
      sg->SetGroupRegex(regex);
      }
    return;
    }
  else if(i==-1)
    {
    // group does not exist nor belong to any existing group
    // add its first component
    this->SourceGroups.push_back(cmSourceGroup(name[0].c_str(), regex));
    sg = this->GetSourceGroup(currentName);
    i = 0; // last component found
    }
  if(!sg)
    {
    cmSystemTools::Error("Could not create source group ");
    return;
    }
  // build the whole source group path
  for(++i; i<=lastElement; ++i)
    {
    sg->AddChild(cmSourceGroup(name[i].c_str(), 0, sg->GetFullName()));
    sg = sg->LookupChild(name[i].c_str());
    }

  sg->SetGroupRegex(regex);
}

#endif

static bool mightExpandVariablesCMP0019(const char* s)
{
  return s && *s && strstr(s,"${") && strchr(s,'}');
}

void cmMakefile::ExpandVariablesCMP0019()
{
  // Drop this ancient compatibility behavior with a policy.
  cmPolicies::PolicyStatus pol = this->GetPolicyStatus(cmPolicies::CMP0019);
  if(pol != cmPolicies::OLD && pol != cmPolicies::WARN)
    {
    return;
    }
  std::ostringstream w;

  const char *includeDirs = this->GetProperty("INCLUDE_DIRECTORIES");
  if(mightExpandVariablesCMP0019(includeDirs))
    {
    std::string dirs = includeDirs;
    this->ExpandVariablesInString(dirs, true, true);
    if(pol == cmPolicies::WARN && dirs != includeDirs)
      {
      w << "Evaluated directory INCLUDE_DIRECTORIES\n"
        << "  " << includeDirs << "\n"
        << "as\n"
        << "  " << dirs << "\n";
      }
    this->SetProperty("INCLUDE_DIRECTORIES", dirs.c_str());
    }

  // Also for each target's INCLUDE_DIRECTORIES property:
  for (cmTargets::iterator l = this->Targets.begin();
       l != this->Targets.end(); ++l)
    {
    cmTarget &t = l->second;
    if (t.GetType() == cmState::INTERFACE_LIBRARY
        || t.GetType() == cmState::GLOBAL_TARGET)
      {
      continue;
      }
    includeDirs = t.GetProperty("INCLUDE_DIRECTORIES");
    if(mightExpandVariablesCMP0019(includeDirs))
      {
      std::string dirs = includeDirs;
      this->ExpandVariablesInString(dirs, true, true);
      if(pol == cmPolicies::WARN && dirs != includeDirs)
        {
        w << "Evaluated target " << t.GetName() << " INCLUDE_DIRECTORIES\n"
          << "  " << includeDirs << "\n"
          << "as\n"
          << "  " << dirs << "\n";
        }
      t.SetProperty("INCLUDE_DIRECTORIES", dirs.c_str());
      }
    }

  if (const char* linkDirsProp = this->GetProperty("LINK_DIRECTORIES"))
    {
    if(mightExpandVariablesCMP0019(linkDirsProp))
      {
      std::string d = linkDirsProp;
      std::string orig = linkDirsProp;
      this->ExpandVariablesInString(d, true, true);
      if(pol == cmPolicies::WARN && d != orig)
        {
        w << "Evaluated link directories\n"
          << "  " << orig << "\n"
          << "as\n"
          << "  " << d << "\n";
        }
      }
    }
  for(cmTarget::LinkLibraryVectorType::iterator l =
        this->LinkLibraries.begin();
      l != this->LinkLibraries.end(); ++l)
    {
    if(mightExpandVariablesCMP0019(l->first.c_str()))
      {
      std::string orig = l->first;
      this->ExpandVariablesInString(l->first, true, true);
      if(pol == cmPolicies::WARN && l->first != orig)
        {
        w << "Evaluated link library\n"
          << "  " << orig << "\n"
          << "as\n"
          << "  " << l->first << "\n";
        }
      }
    }

  if(!w.str().empty())
    {
    std::ostringstream m;
    m << cmPolicies::GetPolicyWarning(cmPolicies::CMP0019)
      << "\n"
      << "The following variable evaluations were encountered:\n"
      << w.str();
    this->IssueMessage(cmake::AUTHOR_WARNING, m.str());
    }
}

bool cmMakefile::IsOn(const std::string& name) const
{
  const char* value = this->GetDefinition(name);
  return cmSystemTools::IsOn(value);
}

bool cmMakefile::IsSet(const std::string& name) const
{
  const char* value = this->GetDefinition(name);
  if ( !value )
    {
    return false;
    }

  if ( ! *value )
    {
    return false;
    }

  if ( cmSystemTools::IsNOTFOUND(value) )
    {
    return false;
    }

  return true;
}

bool cmMakefile::PlatformIs64Bit() const
{
  if(const char* sizeof_dptr = this->GetDefinition("CMAKE_SIZEOF_VOID_P"))
    {
    return atoi(sizeof_dptr) == 8;
    }
  return false;
}

bool cmMakefile::PlatformIsAppleIos() const
{
  std::string sdkRoot;
  sdkRoot = this->GetSafeDefinition("CMAKE_OSX_SYSROOT");
  sdkRoot = cmSystemTools::LowerCase(sdkRoot);

  const std::string embedded[] =
    {
    "appletvos", "appletvsimulator",
    "iphoneos", "iphonesimulator",
    "watchos", "watchsimulator",
    };

  for(size_t i = 0; i < sizeof(embedded) / sizeof(embedded[0]); ++i)
    {
    if(sdkRoot.find(embedded[i]) == 0 ||
       sdkRoot.find(std::string("/") + embedded[i]) != std::string::npos)
      {
      return true;
      }
    }

   return false;
}

const char* cmMakefile::GetSONameFlag(const std::string& language) const
{
  std::string name = "CMAKE_SHARED_LIBRARY_SONAME";
  if(!language.empty())
    {
    name += "_";
    name += language;
    }
  name += "_FLAG";
  return GetDefinition(name);
}

bool cmMakefile::CanIWriteThisFile(const char* fileName) const
{
  if ( !this->IsOn("CMAKE_DISABLE_SOURCE_CHANGES") )
    {
    return true;
    }
  // If we are doing an in-source build, then the test will always fail
  if ( cmSystemTools::SameFile(this->GetHomeDirectory(),
                               this->GetHomeOutputDirectory()) )
    {
    if ( this->IsOn("CMAKE_DISABLE_IN_SOURCE_BUILD") )
      {
      return false;
      }
    return true;
    }

  // Check if this is a subdirectory of the source tree but not a
  // subdirectory of the build tree
  if ( cmSystemTools::IsSubDirectory(fileName,
      this->GetHomeDirectory()) &&
    !cmSystemTools::IsSubDirectory(fileName,
      this->GetHomeOutputDirectory()) )
    {
    return false;
    }
  return true;
}

const char* cmMakefile::GetRequiredDefinition(const std::string& name) const
{
  const char* ret = this->GetDefinition(name);
  if(!ret)
    {
    cmSystemTools::Error("Error required internal CMake variable not "
                         "set, cmake may be not be built correctly.\n",
                         "Missing variable is:\n",
                         name.c_str());
    return "";
    }
  return ret;
}

bool cmMakefile::IsDefinitionSet(const std::string& name) const
{
  const char* def = this->StateSnapshot.GetDefinition(name);
  if(!def)
    {
    def = this->GetState()->GetInitializedCacheValue(name);
    }
#ifdef CMAKE_BUILD_WITH_CMAKE
  if(cmVariableWatch* vv = this->GetVariableWatch())
    {
    if(!def)
      {
      vv->VariableAccessed
        (name, cmVariableWatch::UNKNOWN_VARIABLE_DEFINED_ACCESS,
         def, this);
      }
    }
#endif
  return def?true:false;
}

const char* cmMakefile::GetDefinition(const std::string& name) const
{
  const char* def = this->StateSnapshot.GetDefinition(name);
  if(!def)
    {
    def = this->GetState()->GetInitializedCacheValue(name);
    }
#ifdef CMAKE_BUILD_WITH_CMAKE
  cmVariableWatch* vv = this->GetVariableWatch();
  if ( vv && !this->SuppressWatches )
    {
    if ( def )
      {
      vv->VariableAccessed(name, cmVariableWatch::VARIABLE_READ_ACCESS,
        def, this);
      }
    else
      {
      vv->VariableAccessed(name,
          cmVariableWatch::UNKNOWN_VARIABLE_READ_ACCESS, def, this);
      }
    }
#endif
  return def;
}

const char* cmMakefile::GetSafeDefinition(const std::string& def) const
{
  const char* ret = this->GetDefinition(def);
  if(!ret)
    {
    return "";
    }
  return ret;
}

std::vector<std::string> cmMakefile::GetDefinitions() const
{
  std::vector<std::string> res = this->StateSnapshot.ClosureKeys();
  std::vector<std::string> cacheKeys = this->GetState()->GetCacheEntryKeys();
  res.insert(res.end(), cacheKeys.begin(), cacheKeys.end());
  std::sort(res.begin(), res.end());
  return res;
}


const char *cmMakefile::ExpandVariablesInString(std::string& source) const
{
  return this->ExpandVariablesInString(source, false, false);
}

const char *cmMakefile::ExpandVariablesInString(std::string& source,
                                                bool escapeQuotes,
                                                bool noEscapes,
                                                bool atOnly,
                                                const char* filename,
                                                long line,
                                                bool removeEmpty,
                                                bool replaceAt) const
{
  bool compareResults = false;
  cmake::MessageType mtype = cmake::LOG;
  std::string errorstr;
  std::string original;

  // Sanity check the @ONLY mode.
  if(atOnly && (!noEscapes || !removeEmpty))
    {
    // This case should never be called.  At-only is for
    // configure-file/string which always does no escapes.
    this->IssueMessage(cmake::INTERNAL_ERROR,
                       "ExpandVariablesInString @ONLY called "
                       "on something with escapes.");
    return source.c_str();
    }

  // Variables used in the WARN case.
  std::string newResult;
  std::string newErrorstr;
  cmake::MessageType newError = cmake::LOG;

  switch(this->GetPolicyStatus(cmPolicies::CMP0053))
    {
    case cmPolicies::WARN:
      {
      // Save the original string for the warning.
      original = source;
      newResult = source;
      compareResults = true;
      // Suppress variable watches to avoid calling hooks twice. Suppress new
      // dereferences since the OLD behavior is still what is actually used.
      this->SuppressWatches = true;
      newError =
        ExpandVariablesInStringNew(newErrorstr, newResult, escapeQuotes,
                                   noEscapes, atOnly, filename, line,
                                   removeEmpty, replaceAt);
      this->SuppressWatches = false;
      }
    case cmPolicies::OLD:
      mtype = ExpandVariablesInStringOld(errorstr, source, escapeQuotes,
                                         noEscapes, atOnly, filename,
                                         line, removeEmpty, true);
      break;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
      // Messaging here would be *very* verbose.
    case cmPolicies::NEW:
      mtype = ExpandVariablesInStringNew(errorstr, source, escapeQuotes,
                                         noEscapes, atOnly, filename,
                                         line, removeEmpty, replaceAt);
      break;
    }

  // If it's an error in either case, just report the error...
  if(mtype != cmake::LOG)
    {
    if(mtype == cmake::FATAL_ERROR)
      {
      cmSystemTools::SetFatalErrorOccured();
      }
    this->IssueMessage(mtype, errorstr);
    }
  // ...otherwise, see if there's a difference that needs to be warned about.
  else if(compareResults && (newResult != source || newError != mtype))
    {
    std::string msg =
      cmPolicies::GetPolicyWarning(cmPolicies::CMP0053);
    msg += "\n";

    std::string msg_input = original;
    cmSystemTools::ReplaceString(msg_input, "\n", "\n  ");
    msg += "For input:\n  '";
    msg += msg_input;
    msg += "'\n";

    std::string msg_old = source;
    cmSystemTools::ReplaceString(msg_old, "\n", "\n  ");
    msg += "the old evaluation rules produce:\n  '";
    msg += msg_old;
    msg += "'\n";

    if(newError == mtype)
      {
      std::string msg_new = newResult;
      cmSystemTools::ReplaceString(msg_new, "\n", "\n  ");
      msg += "but the new evaluation rules produce:\n  '";
      msg += msg_new;
      msg += "'\n";
      }
    else
      {
      std::string msg_err = newErrorstr;
      cmSystemTools::ReplaceString(msg_err, "\n", "\n  ");
      msg += "but the new evaluation rules produce an error:\n  ";
      msg += msg_err;
      msg += "\n";
      }

    msg +=
      "Using the old result for compatibility since the policy is not set.";

    this->IssueMessage(cmake::AUTHOR_WARNING, msg);
    }

  return source.c_str();
}

cmake::MessageType cmMakefile::ExpandVariablesInStringOld(
                                                std::string& errorstr,
                                                std::string& source,
                                                bool escapeQuotes,
                                                bool noEscapes,
                                                bool atOnly,
                                                const char* filename,
                                                long line,
                                                bool removeEmpty,
                                                bool replaceAt) const
{
  // Fast path strings without any special characters.
  if ( source.find_first_of("$@\\") == source.npos)
    {
    return cmake::LOG;
    }

  // Special-case the @ONLY mode.
  if(atOnly)
    {
    // Store an original copy of the input.
    std::string input = source;

    // Start with empty output.
    source = "";

    // Look for one @VAR@ at a time.
    const char* in = input.c_str();
    while(this->cmAtVarRegex.find(in))
      {
      // Get the range of the string to replace.
      const char* first = in + this->cmAtVarRegex.start();
      const char* last =  in + this->cmAtVarRegex.end();

      // Store the unchanged part of the string now.
      source.append(in, first-in);

      // Lookup the definition of VAR.
      std::string var(first+1, last-first-2);
      if(const char* val = this->GetDefinition(var))
        {
        // Store the value in the output escaping as requested.
        if(escapeQuotes)
          {
          source.append(cmSystemTools::EscapeQuotes(val));
          }
        else
          {
          source.append(val);
          }
        }

      // Continue looking for @VAR@ further along the string.
      in = last;
      }

    // Append the rest of the unchanged part of the string.
    source.append(in);

    return cmake::LOG;
    }

  // This method replaces ${VAR} and @VAR@ where VAR is looked up
  // with GetDefinition(), if not found in the map, nothing is expanded.
  // It also supports the $ENV{VAR} syntax where VAR is looked up in
  // the current environment variables.

  cmCommandArgumentParserHelper parser;
  parser.SetMakefile(this);
  parser.SetLineFile(line, filename);
  parser.SetEscapeQuotes(escapeQuotes);
  parser.SetNoEscapeMode(noEscapes);
  parser.SetReplaceAtSyntax(replaceAt);
  parser.SetRemoveEmpty(removeEmpty);
  int res = parser.ParseString(source.c_str(), 0);
  const char* emsg = parser.GetError();
  cmake::MessageType mtype = cmake::LOG;
  if ( res && !emsg[0] )
    {
    source = parser.GetResult();
    }
  else
    {
    // Construct the main error message.
    std::ostringstream error;
    error << "Syntax error in cmake code ";
    if(filename && line > 0)
      {
      // This filename and line number may be more specific than the
      // command context because one command invocation can have
      // arguments on multiple lines.
      error << "at\n"
            << "  " << filename << ":" << line << "\n";
      }
    error << "when parsing string\n"
          << "  " << source << "\n";
    error << emsg;

    // If the parser failed ("res" is false) then this is a real
    // argument parsing error, so the policy applies.  Otherwise the
    // parser reported an error message without failing because the
    // helper implementation is unhappy, which has always reported an
    // error.
    mtype = cmake::FATAL_ERROR;
    if(!res)
      {
      // This is a real argument parsing error.  Use policy CMP0010 to
      // decide whether it is an error.
      switch(this->GetPolicyStatus(cmPolicies::CMP0010))
        {
        case cmPolicies::WARN:
          error << "\n" << cmPolicies::GetPolicyWarning(cmPolicies::CMP0010);
        case cmPolicies::OLD:
          // OLD behavior is to just warn and continue.
          mtype = cmake::AUTHOR_WARNING;
          break;
        case cmPolicies::REQUIRED_IF_USED:
        case cmPolicies::REQUIRED_ALWAYS:
          error << "\n"
                << cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0010);
        case cmPolicies::NEW:
          // NEW behavior is to report the error.
          break;
        }
      }
    errorstr = error.str();
    }
  return mtype;
}

typedef enum
  {
  NORMAL,
  ENVIRONMENT,
  CACHE
  } t_domain;
struct t_lookup
  {
  t_lookup(): domain(NORMAL), loc(0) {}
  t_domain domain;
  size_t loc;
  };

cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
                                            std::string& errorstr,
                                            std::string& source,
                                            bool escapeQuotes,
                                            bool noEscapes,
                                            bool atOnly,
                                            const char* filename,
                                            long line,
                                            bool removeEmpty,
                                            bool replaceAt) const
{
  // This method replaces ${VAR} and @VAR@ where VAR is looked up
  // with GetDefinition(), if not found in the map, nothing is expanded.
  // It also supports the $ENV{VAR} syntax where VAR is looked up in
  // the current environment variables.

  const char* in = source.c_str();
  const char* last = in;
  std::string result;
  result.reserve(source.size());
  std::vector<t_lookup> openstack;
  bool error = false;
  bool done = false;
  cmake::MessageType mtype = cmake::LOG;

  cmState* state = this->GetCMakeInstance()->GetState();

  do
    {
    char inc = *in;
    switch(inc)
      {
      case '}':
        if(!openstack.empty())
          {
          t_lookup var = openstack.back();
          openstack.pop_back();
          result.append(last, in - last);
          std::string const& lookup = result.substr(var.loc);
          const char* value = NULL;
          std::string varresult;
          static const std::string lineVar = "CMAKE_CURRENT_LIST_LINE";
          switch(var.domain)
            {
            case NORMAL:
              if(filename && lookup == lineVar)
                {
                std::ostringstream ostr;
                ostr << line;
                varresult = ostr.str();
                }
              else
                {
                value = this->GetDefinition(lookup);
                }
              break;
            case ENVIRONMENT:
              value = cmSystemTools::GetEnv(lookup.c_str());
              break;
            case CACHE:
              value = state->GetCacheEntryValue(lookup);
              break;
            }
          // Get the string we're meant to append to.
          if(value)
            {
            if(escapeQuotes)
              {
              varresult = cmSystemTools::EscapeQuotes(value);
              }
            else
              {
              varresult = value;
              }
            }
          else if(!removeEmpty)
            {
            // check to see if we need to print a warning
            // if strict mode is on and the variable has
            // not been "cleared"/initialized with a set(foo ) call
            if(this->GetCMakeInstance()->GetWarnUninitialized() &&
               !this->VariableInitialized(lookup))
              {
              if (this->CheckSystemVars ||
                  cmSystemTools::IsSubDirectory(filename,
                                                this->GetHomeDirectory()) ||
                  cmSystemTools::IsSubDirectory(filename,
                                             this->GetHomeOutputDirectory()))
                {
                std::ostringstream msg;
                cmListFileContext lfc;
                cmOutputConverter converter(this->StateSnapshot);
                lfc.FilePath =
                    converter.Convert(filename, cmOutputConverter::HOME);
                lfc.Line = line;
                msg << "uninitialized variable \'" << lookup << "\'";
                this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING,
                                                       msg.str(), lfc);
                }
              }
            }
          result.replace(var.loc, result.size() - var.loc, varresult);
          // Start looking from here on out.
          last = in + 1;
          }
        break;
      case '$':
        if(!atOnly)
          {
          t_lookup lookup;
          const char* next = in + 1;
          const char* start = NULL;
          char nextc = *next;
          if(nextc == '{')
            {
            // Looking for a variable.
            start = in + 2;
            lookup.domain = NORMAL;
            }
          else if(nextc == '<')
            {
            }
          else if(!nextc)
            {
            result.append(last, next - last);
            last = next;
            }
          else if(cmHasLiteralPrefix(next, "ENV{"))
            {
            // Looking for an environment variable.
            start = in + 5;
            lookup.domain = ENVIRONMENT;
            }
          else if(cmHasLiteralPrefix(next, "CACHE{"))
            {
            // Looking for a cache variable.
            start = in + 7;
            lookup.domain = CACHE;
            }
          else
            {
            if(this->cmNamedCurly.find(next))
              {
              errorstr = "Syntax $"
                  + std::string(next, this->cmNamedCurly.end())
                  + "{} is not supported.  Only ${}, $ENV{}, "
                    "and $CACHE{} are allowed.";
              mtype = cmake::FATAL_ERROR;
              error = true;
              }
            }
          if(start)
            {
            result.append(last, in - last);
            last = start;
            in = start - 1;
            lookup.loc = result.size();
            openstack.push_back(lookup);
            }
          break;
          }
      case '\\':
        if(!noEscapes)
          {
          const char* next = in + 1;
          char nextc = *next;
          if(nextc == 't')
            {
            result.append(last, in - last);
            result.append("\t");
            last = next + 1;
            }
          else if(nextc == 'n')
            {
            result.append(last, in - last);
            result.append("\n");
            last = next + 1;
            }
          else if(nextc == 'r')
            {
            result.append(last, in - last);
            result.append("\r");
            last = next + 1;
            }
          else if(nextc == ';' && openstack.empty())
            {
            // Handled in ExpandListArgument; pass the backslash literally.
            }
          else if (isalnum(nextc) || nextc == '\0')
            {
            errorstr += "Invalid character escape '\\";
            if (nextc)
              {
              errorstr += nextc;
              errorstr += "'.";
              }
            else
              {
              errorstr += "' (at end of input).";
              }
            error = true;
            }
          else
            {
            // Take what we've found so far, skipping the escape character.
            result.append(last, in - last);
            // Start tracking from the next character.
            last = in + 1;
            }
          // Skip the next character since it was escaped, but don't read past
          // the end of the string.
          if(*last)
            {
            ++in;
            }
          }
        break;
      case '\n':
        // Onto the next line.
        ++line;
        break;
      case '\0':
        done = true;
        break;
      case '@':
        if(replaceAt)
          {
          const char* nextAt = strchr(in + 1, '@');
          if(nextAt && nextAt != in + 1 &&
             nextAt == in + 1 + strspn(in + 1,
                "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                "abcdefghijklmnopqrstuvwxyz"
                "0123456789/_.+-"))
            {
            std::string variable(in + 1, nextAt - in - 1);
            std::string varresult = this->GetSafeDefinition(variable);
            if(escapeQuotes)
              {
              varresult = cmSystemTools::EscapeQuotes(varresult);
              }
            // Skip over the variable.
            result.append(last, in - last);
            result.append(varresult);
            in = nextAt;
            last = in + 1;
            break;
            }
          }
        // Failed to find a valid @ expansion; treat it as literal.
        /* FALLTHROUGH */
      default:
        {
        if(!openstack.empty() &&
           !(isalnum(inc) || inc == '_' ||
             inc == '/' || inc == '.' ||
             inc == '+' || inc == '-'))
          {
          errorstr += "Invalid character (\'";
          errorstr += inc;
          result.append(last, in - last);
          errorstr += "\') in a variable name: "
                      "'" + result.substr(openstack.back().loc) + "'";
          mtype = cmake::FATAL_ERROR;
          error = true;
          }
        break;
        }
      }
    // Look at the next character.
    } while(!error && !done && *++in);

  // Check for open variable references yet.
  if(!error && !openstack.empty())
    {
    // There's an open variable reference waiting.  Policy CMP0010 flags
    // whether this is an error or not.  The new parser now enforces
    // CMP0010 as well.
    errorstr += "There is an unterminated variable reference.";
    error = true;
    }

  if(error)
    {
    std::ostringstream emsg;
    emsg << "Syntax error in cmake code ";
    if(filename)
      {
      // This filename and line number may be more specific than the
      // command context because one command invocation can have
      // arguments on multiple lines.
      emsg << "at\n"
            << "  " << filename << ":" << line << "\n";
      }
    emsg << "when parsing string\n"
         << "  " << source << "\n";
    emsg << errorstr;
    mtype = cmake::FATAL_ERROR;
    errorstr = emsg.str();
    }
  else
    {
    // Append the rest of the unchanged part of the string.
    result.append(last);

    source = result;
    }

  return mtype;
}

void cmMakefile::RemoveVariablesInString(std::string& source,
                                         bool atOnly) const
{
  if(!atOnly)
    {
    cmsys::RegularExpression var("(\\${[A-Za-z_0-9]*})");
    while (var.find(source))
      {
      source.erase(var.start(),var.end() - var.start());
      }
    }

  if(!atOnly)
    {
    cmsys::RegularExpression varb("(\\$ENV{[A-Za-z_0-9]*})");
    while (varb.find(source))
      {
      source.erase(varb.start(),varb.end() - varb.start());
      }
    }
  cmsys::RegularExpression var2("(@[A-Za-z_0-9]*@)");
  while (var2.find(source))
    {
    source.erase(var2.start(),var2.end() - var2.start());
    }
}

//----------------------------------------------------------------------------
std::string
cmMakefile::GetConfigurations(std::vector<std::string>& configs,
                              bool singleConfig) const
{
  if(this->GetGlobalGenerator()->IsMultiConfig())
    {
    if(const char* configTypes =
       this->GetDefinition("CMAKE_CONFIGURATION_TYPES"))
      {
      cmSystemTools::ExpandListArgument(configTypes, configs);
      }
    return "";
    }
  else
    {
    const std::string& buildType = this->GetSafeDefinition("CMAKE_BUILD_TYPE");
    if(singleConfig && !buildType.empty())
      {
      configs.push_back(buildType);
      }
    return buildType;
    }
}

#if defined(CMAKE_BUILD_WITH_CMAKE)
/**
 * Find a source group whose regular expression matches the filename
 * part of the given source name.  Search backward through the list of
 * source groups, and take the first matching group found.  This way
 * non-inherited SOURCE_GROUP commands will have precedence over
 * inherited ones.
 */
cmSourceGroup*
cmMakefile::FindSourceGroup(const char* source,
                            std::vector<cmSourceGroup> &groups) const
{
  // First search for a group that lists the file explicitly.
  for(std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
      sg != groups.rend(); ++sg)
    {
    cmSourceGroup *result = sg->MatchChildrenFiles(source);
    if(result)
      {
      return result;
      }
    }

  // Now search for a group whose regex matches the file.
  for(std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
      sg != groups.rend(); ++sg)
    {
    cmSourceGroup *result = sg->MatchChildrenRegex(source);
    if(result)
      {
      return result;
      }
    }


  // Shouldn't get here, but just in case, return the default group.
  return &groups.front();
}
#endif

bool cmMakefile::IsFunctionBlocked(const cmListFileFunction& lff,
                                   cmExecutionStatus &status)
{
  // if there are no blockers get out of here
  if (this->FunctionBlockers.begin() == this->FunctionBlockers.end())
    {
    return false;
    }

  // loop over all function blockers to see if any block this command
  // evaluate in reverse, this is critical for balanced IF statements etc
  std::vector<cmFunctionBlocker*>::reverse_iterator pos;
  for (pos = this->FunctionBlockers.rbegin();
       pos != this->FunctionBlockers.rend(); ++pos)
    {
    if((*pos)->IsFunctionBlocked(lff, *this, status))
      {
      return true;
      }
    }

  return false;
}

//----------------------------------------------------------------------------
void cmMakefile::PushFunctionBlockerBarrier()
{
  this->FunctionBlockerBarriers.push_back(this->FunctionBlockers.size());
}

//----------------------------------------------------------------------------
void cmMakefile::PopFunctionBlockerBarrier(bool reportError)
{
  // Remove any extra entries pushed on the barrier.
  FunctionBlockersType::size_type barrier =
    this->FunctionBlockerBarriers.back();
  while(this->FunctionBlockers.size() > barrier)
    {
    cmsys::auto_ptr<cmFunctionBlocker> fb(this->FunctionBlockers.back());
    this->FunctionBlockers.pop_back();
    if(reportError)
      {
      // Report the context in which the unclosed block was opened.
      cmListFileContext const& lfc = fb->GetStartingContext();
      std::ostringstream e;
      e << "A logical block opening on the line\n"
        << "  " << lfc << "\n"
        << "is not closed.";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      reportError = false;
      }
    }

  // Remove the barrier.
  this->FunctionBlockerBarriers.pop_back();
}

//----------------------------------------------------------------------------
void cmMakefile::PushLoopBlock()
{
  assert(!this->LoopBlockCounter.empty());
  this->LoopBlockCounter.top()++;
}

void cmMakefile::PopLoopBlock()
{
  assert(!this->LoopBlockCounter.empty());
  assert(this->LoopBlockCounter.top() > 0);
  this->LoopBlockCounter.top()--;
}

void cmMakefile::PushLoopBlockBarrier()
{
  this->LoopBlockCounter.push(0);
}

void cmMakefile::PopLoopBlockBarrier()
{
  assert(!this->LoopBlockCounter.empty());
  assert(this->LoopBlockCounter.top() == 0);
  this->LoopBlockCounter.pop();
}

bool cmMakefile::IsLoopBlock() const
{
  assert(!this->LoopBlockCounter.empty());
  return !this->LoopBlockCounter.empty() && this->LoopBlockCounter.top() > 0;
}

std::string cmMakefile::GetExecutionFilePath() const
{
  assert(this->StateSnapshot.IsValid());
  return this->StateSnapshot.GetExecutionListFile();
}

//----------------------------------------------------------------------------
bool cmMakefile::ExpandArguments(
  std::vector<cmListFileArgument> const& inArgs,
  std::vector<std::string>& outArgs, const char* filename) const
{
  std::string efp = this->GetExecutionFilePath();
  if (!filename)
    {
    filename = efp.c_str();
    }
  std::vector<cmListFileArgument>::const_iterator i;
  std::string value;
  outArgs.reserve(inArgs.size());
  for(i = inArgs.begin(); i != inArgs.end(); ++i)
    {
    // No expansion in a bracket argument.
    if(i->Delim == cmListFileArgument::Bracket)
      {
      outArgs.push_back(i->Value);
      continue;
      }
    // Expand the variables in the argument.
    value = i->Value;
    this->ExpandVariablesInString(value, false, false, false,
                                  filename, i->Line, false, false);

    // If the argument is quoted, it should be one argument.
    // Otherwise, it may be a list of arguments.
    if(i->Delim == cmListFileArgument::Quoted)
      {
      outArgs.push_back(value);
      }
    else
      {
      cmSystemTools::ExpandListArgument(value, outArgs);
      }
    }
  return !cmSystemTools::GetFatalErrorOccured();
}

//----------------------------------------------------------------------------
bool cmMakefile::ExpandArguments(
  std::vector<cmListFileArgument> const& inArgs,
  std::vector<cmExpandedCommandArgument>& outArgs, const char* filename) const
{
  std::string efp = this->GetExecutionFilePath();
  if (!filename)
    {
    filename = efp.c_str();
    }
  std::vector<cmListFileArgument>::const_iterator i;
  std::string value;
  outArgs.reserve(inArgs.size());
  for(i = inArgs.begin(); i != inArgs.end(); ++i)
    {
    // No expansion in a bracket argument.
    if(i->Delim == cmListFileArgument::Bracket)
      {
      outArgs.push_back(cmExpandedCommandArgument(i->Value, true));
      continue;
      }
    // Expand the variables in the argument.
    value = i->Value;
    this->ExpandVariablesInString(value, false, false, false,
                                  filename, i->Line, false, false);

    // If the argument is quoted, it should be one argument.
    // Otherwise, it may be a list of arguments.
    if(i->Delim == cmListFileArgument::Quoted)
      {
      outArgs.push_back(cmExpandedCommandArgument(value, true));
      }
    else
      {
      std::vector<std::string> stringArgs;
      cmSystemTools::ExpandListArgument(value, stringArgs);
      for(size_t j = 0; j < stringArgs.size(); ++j)
        {
        outArgs.push_back(cmExpandedCommandArgument(stringArgs[j], false));
        }
      }
    }
  return !cmSystemTools::GetFatalErrorOccured();
}

//----------------------------------------------------------------------------
void cmMakefile::AddFunctionBlocker(cmFunctionBlocker* fb)
{
  if(!this->ExecutionStatusStack.empty())
    {
    // Record the context in which the blocker is created.
    fb->SetStartingContext(this->GetExecutionContext());
    }

  this->FunctionBlockers.push_back(fb);
}

cmsys::auto_ptr<cmFunctionBlocker>
cmMakefile::RemoveFunctionBlocker(cmFunctionBlocker* fb,
                                  const cmListFileFunction& lff)
{
  // Find the function blocker stack barrier for the current scope.
  // We only remove a blocker whose index is not less than the barrier.
  FunctionBlockersType::size_type barrier = 0;
  if(!this->FunctionBlockerBarriers.empty())
    {
    barrier = this->FunctionBlockerBarriers.back();
    }

  // Search for the function blocker whose scope this command ends.
  for(FunctionBlockersType::size_type
        i = this->FunctionBlockers.size(); i > barrier; --i)
    {
    std::vector<cmFunctionBlocker*>::iterator pos =
      this->FunctionBlockers.begin() + (i - 1);
    if (*pos == fb)
      {
      // Warn if the arguments do not match, but always remove.
      if(!(*pos)->ShouldRemove(lff, *this))
        {
        cmListFileContext const& lfc = fb->GetStartingContext();
        cmListFileContext closingContext =
            cmListFileContext::FromCommandContext(lff, lfc.FilePath);
        std::ostringstream e;
        e << "A logical block opening on the line\n"
          << "  " << lfc << "\n"
          << "closes on the line\n"
          << "  " << closingContext << "\n"
          << "with mis-matching arguments.";
        this->IssueMessage(cmake::AUTHOR_WARNING, e.str());
        }
      cmFunctionBlocker* b = *pos;
      this->FunctionBlockers.erase(pos);
      return cmsys::auto_ptr<cmFunctionBlocker>(b);
      }
    }

  return cmsys::auto_ptr<cmFunctionBlocker>();
}

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

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

void cmMakefile::SetScriptModeFile(const char* scriptfile)
{
  this->AddDefinition("CMAKE_SCRIPT_MODE_FILE", scriptfile);
}

void cmMakefile::SetArgcArgv(const std::vector<std::string>& args)
{
  std::ostringstream strStream;
  strStream << args.size();
  this->AddDefinition("CMAKE_ARGC", strStream.str().c_str());
  //this->MarkVariableAsUsed("CMAKE_ARGC");

  for (unsigned int t = 0; t < args.size(); ++t)
  {
    std::ostringstream tmpStream;
    tmpStream << "CMAKE_ARGV" << t;
    this->AddDefinition(tmpStream.str(), args[t].c_str());
    //this->MarkVariableAsUsed(tmpStream.str().c_str());
  }
}

//----------------------------------------------------------------------------
cmSourceFile* cmMakefile::GetSource(const std::string& sourceName) const
{
  cmSourceFileLocation sfl(this, sourceName);
  for(std::vector<cmSourceFile*>::const_iterator
        sfi = this->SourceFiles.begin();
      sfi != this->SourceFiles.end(); ++sfi)
    {
    cmSourceFile* sf = *sfi;
    if(sf->Matches(sfl))
      {
      return sf;
      }
    }
  return 0;
}

//----------------------------------------------------------------------------
cmSourceFile* cmMakefile::CreateSource(const std::string& sourceName,
                                       bool generated)
{
  cmSourceFile* sf = new cmSourceFile(this, sourceName);
  if(generated)
    {
    sf->SetProperty("GENERATED", "1");
    }
  this->SourceFiles.push_back(sf);
  return sf;
}

//----------------------------------------------------------------------------
cmSourceFile* cmMakefile::GetOrCreateSource(const std::string& sourceName,
                                            bool generated)
{
  if(cmSourceFile* esf = this->GetSource(sourceName))
    {
    return esf;
    }
  else
    {
    return this->CreateSource(sourceName, generated);
    }
}

void cmMakefile::EnableLanguage(std::vector<std::string> const &  lang,
                               bool optional)
{
  this->AddDefinition("CMAKE_CFG_INTDIR",
                      this->GetGlobalGenerator()->GetCMakeCFGIntDir());
  this->GetGlobalGenerator()->EnableLanguage(lang, this, optional);
}

int cmMakefile::TryCompile(const std::string& srcdir,
                           const std::string& bindir,
                           const std::string& projectName,
                           const std::string& targetName,
                           bool fast,
                           const std::vector<std::string> *cmakeArgs,
                           std::string& output)
{
  this->IsSourceFileTryCompile = fast;
  // does the binary directory exist ? If not create it...
  if (!cmSystemTools::FileIsDirectory(bindir))
    {
    cmSystemTools::MakeDirectory(bindir.c_str());
    }

  // change to the tests directory and run cmake
  // use the cmake object instead of calling cmake
  std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
  cmSystemTools::ChangeDirectory(bindir);

  // make sure the same generator is used
  // use this program as the cmake to be run, it should not
  // be run that way but the cmake object requires a vailid path
  cmake cm;
  cm.SetIsInTryCompile(true);
  cmGlobalGenerator *gg = cm.CreateGlobalGenerator
    (this->GetGlobalGenerator()->GetName());
  if (!gg)
    {
    cmSystemTools::Error(
      "Internal CMake error, TryCompile bad GlobalGenerator");
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd);
    this->IsSourceFileTryCompile = false;
    return 1;
    }
  cm.SetGlobalGenerator(gg);

  // do a configure
  cm.SetHomeDirectory(srcdir);
  cm.SetHomeOutputDirectory(bindir);
  cm.SetGeneratorPlatform(this->GetCMakeInstance()->GetGeneratorPlatform());
  cm.SetGeneratorToolset(this->GetCMakeInstance()->GetGeneratorToolset());
  cm.LoadCache();
  if(!gg->IsMultiConfig())
    {
    if(const char* config =
       this->GetDefinition("CMAKE_TRY_COMPILE_CONFIGURATION"))
      {
      // Tell the single-configuration generator which one to use.
      // Add this before the user-provided CMake arguments in case
      // one of the arguments is -DCMAKE_BUILD_TYPE=...
      cm.AddCacheEntry("CMAKE_BUILD_TYPE", config,
                       "Build configuration", cmState::STRING);
      }
    }
  // if cmake args were provided then pass them in
  if (cmakeArgs)
    {
    // FIXME: Workaround to ignore unused CLI variables in try-compile.
    //
    // Ideally we should use SetArgs to honor options like --warn-unused-vars.
    // However, there is a subtle problem when certain arguments are passed to
    // a macro wrapping around try_compile or try_run that does not escape
    // semicolons in its parameters but just passes ${ARGV} or ${ARGN}.  In
    // this case a list argument like "-DVAR=a;b" gets split into multiple
    // cmake arguments "-DVAR=a" and "b".  Currently SetCacheArgs ignores
    // argument "b" and uses just "-DVAR=a", leading to a subtle bug in that
    // the try_compile or try_run does not get the proper value of VAR.  If we
    // call SetArgs here then it would treat "b" as the source directory and
    // cause an error such as "The source directory .../CMakeFiles/CMakeTmp/b
    // does not exist", thus breaking the try_compile or try_run completely.
    //
    // Strictly speaking the bug is in the wrapper macro because the CMake
    // language has always flattened nested lists and the macro should escape
    // the semicolons in its arguments before forwarding them.  However, this
    // bug is so subtle that projects typically work anyway, usually because
    // the value VAR=a is sufficient for the try_compile or try_run to get the
    // correct result.  Calling SetArgs here would break such projects that
    // previously built.  Instead we work around the issue by never reporting
    // unused arguments and ignoring options such as --warn-unused-vars.
    cm.SetWarnUnusedCli(false);
    //cm.SetArgs(*cmakeArgs, true);

    cm.SetCacheArgs(*cmakeArgs);
    }
  // to save time we pass the EnableLanguage info directly
  gg->EnableLanguagesFromGenerator(this->GetGlobalGenerator(), this);
  if(this->IsOn("CMAKE_SUPPRESS_DEVELOPER_WARNINGS"))
    {
    cm.AddCacheEntry("CMAKE_SUPPRESS_DEVELOPER_WARNINGS",
                     "TRUE", "", cmState::INTERNAL);
    }
  else
    {
    cm.AddCacheEntry("CMAKE_SUPPRESS_DEVELOPER_WARNINGS",
                     "FALSE", "", cmState::INTERNAL);
    }
  if (cm.Configure() != 0)
    {
    cmSystemTools::Error(
      "Internal CMake error, TryCompile configure of cmake failed");
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd);
    this->IsSourceFileTryCompile = false;
    return 1;
    }

  if (cm.Generate() != 0)
    {
    cmSystemTools::Error(
      "Internal CMake error, TryCompile generation of cmake failed");
    // return to the original directory
    cmSystemTools::ChangeDirectory(cwd);
    this->IsSourceFileTryCompile = false;
    return 1;
    }

  // finally call the generator to actually build the resulting project
  int ret = this->GetGlobalGenerator()->TryCompile(srcdir,bindir,
                                                   projectName,
                                                   targetName,
                                                   fast,
                                                   output,
                                                   this);

  cmSystemTools::ChangeDirectory(cwd);
  this->IsSourceFileTryCompile = false;
  return ret;
}

bool cmMakefile::GetIsSourceFileTryCompile() const
{
  return this->IsSourceFileTryCompile;
}

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

cmGlobalGenerator* cmMakefile::GetGlobalGenerator() const
{
  return this->GlobalGenerator;
}

#ifdef CMAKE_BUILD_WITH_CMAKE
cmVariableWatch *cmMakefile::GetVariableWatch() const
{
  if ( this->GetCMakeInstance() &&
       this->GetCMakeInstance()->GetVariableWatch() )
    {
    return this->GetCMakeInstance()->GetVariableWatch();
    }
  return 0;
}
#endif

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

void cmMakefile::DisplayStatus(const char* message, float s) const
{
  cmake* cm = this->GetCMakeInstance();
  if (cm->GetWorkingMode() == cmake::FIND_PACKAGE_MODE)
    {
    // don't output any STATUS message in FIND_PACKAGE_MODE, since they will
    // directly be fed to the compiler, which will be confused.
    return;
    }
  cm->UpdateProgress(message, s);
}

std::string cmMakefile::GetModulesFile(const char* filename) const
{
  std::string result;

  // We search the module always in CMAKE_ROOT and in CMAKE_MODULE_PATH,
  // and then decide based on the policy setting which one to return.
  // See CMP0017 for more details.
  // The specific problem was that KDE 4.5.0 installs a
  // FindPackageHandleStandardArgs.cmake which doesn't have the new features
  // of FPHSA.cmake introduced in CMake 2.8.3 yet, and by setting
  // CMAKE_MODULE_PATH also e.g. FindZLIB.cmake from cmake included
  // FPHSA.cmake from kdelibs and not from CMake, and tried to use the
  // new features, which were not there in the version from kdelibs, and so
  // failed ("
  std::string moduleInCMakeRoot;
  std::string moduleInCMakeModulePath;

  // Always search in CMAKE_MODULE_PATH:
  const char* cmakeModulePath = this->GetDefinition("CMAKE_MODULE_PATH");
  if(cmakeModulePath)
    {
    std::vector<std::string> modulePath;
    cmSystemTools::ExpandListArgument(cmakeModulePath, modulePath);

    //Look through the possible module directories.
    for(std::vector<std::string>::iterator i = modulePath.begin();
        i != modulePath.end(); ++i)
      {
      std::string itempl = *i;
      cmSystemTools::ConvertToUnixSlashes(itempl);
      itempl += "/";
      itempl += filename;
      if(cmSystemTools::FileExists(itempl.c_str()))
        {
        moduleInCMakeModulePath = itempl;
        break;
        }
      }
    }

  // Always search in the standard modules location.
  const char* cmakeRoot = this->GetDefinition("CMAKE_ROOT");
  if(cmakeRoot)
    {
    moduleInCMakeRoot = cmakeRoot;
    moduleInCMakeRoot += "/Modules/";
    moduleInCMakeRoot += filename;
    cmSystemTools::ConvertToUnixSlashes(moduleInCMakeRoot);
    if(!cmSystemTools::FileExists(moduleInCMakeRoot.c_str()))
      {
      moduleInCMakeRoot = "";
      }
    }

  // Normally, prefer the files found in CMAKE_MODULE_PATH. Only when the file
  // from which we are being called is located itself in CMAKE_ROOT, then
  // prefer results from CMAKE_ROOT depending on the policy setting.
  result = moduleInCMakeModulePath;
  if (result.empty())
    {
    result = moduleInCMakeRoot;
    }

  if (!moduleInCMakeModulePath.empty() && !moduleInCMakeRoot.empty())
    {
    const char* currentFile = this->GetDefinition("CMAKE_CURRENT_LIST_FILE");
    std::string mods = cmakeRoot + std::string("/Modules/");
    if (currentFile && strncmp(currentFile, mods.c_str(), mods.size()) == 0)
      {
      switch (this->GetPolicyStatus(cmPolicies::CMP0017))
        {
        case cmPolicies::WARN:
        {
          std::ostringstream e;
          e << "File " << currentFile << " includes "
            << moduleInCMakeModulePath
            << " (found via CMAKE_MODULE_PATH) which shadows "
            << moduleInCMakeRoot  << ". This may cause errors later on .\n"
            << cmPolicies::GetPolicyWarning(cmPolicies::CMP0017);

          this->IssueMessage(cmake::AUTHOR_WARNING, e.str());
           // break;  // fall through to OLD behaviour
        }
        case cmPolicies::OLD:
          result = moduleInCMakeModulePath;
          break;
        case cmPolicies::REQUIRED_IF_USED:
        case cmPolicies::REQUIRED_ALWAYS:
        case cmPolicies::NEW:
          result = moduleInCMakeRoot;
          break;
        }
      }
    }

  return result;
}

void cmMakefile::ConfigureString(const std::string& input,
                                 std::string& output, bool atOnly,
                                 bool escapeQuotes) const
{
  // Split input to handle one line at a time.
  std::string::const_iterator lineStart = input.begin();
  while(lineStart != input.end())
    {
    // Find the end of this line.
    std::string::const_iterator lineEnd = lineStart;
    while(lineEnd != input.end() && *lineEnd != '\n')
      {
      ++lineEnd;
      }

    // Copy the line.
    std::string line(lineStart, lineEnd);

    // Skip the newline character.
    bool haveNewline = (lineEnd != input.end());
    if(haveNewline)
      {
      ++lineEnd;
      }

    // Replace #cmakedefine instances.
    if(this->cmDefineRegex.find(line))
      {
      const char* def =
        this->GetDefinition(this->cmDefineRegex.match(1));
      if(!cmSystemTools::IsOff(def))
        {
        cmSystemTools::ReplaceString(line, "#cmakedefine", "#define");
        output += line;
        }
      else
        {
        output += "/* #undef ";
        output += this->cmDefineRegex.match(1);
        output += " */";
        }
      }
    else if(this->cmDefine01Regex.find(line))
      {
      const char* def =
        this->GetDefinition(this->cmDefine01Regex.match(1));
      cmSystemTools::ReplaceString(line, "#cmakedefine01", "#define");
      output += line;
      if(!cmSystemTools::IsOff(def))
        {
        output += " 1";
        }
      else
        {
        output += " 0";
        }
      }
    else
      {
      output += line;
      }

    if(haveNewline)
      {
      output += "\n";
      }

    // Move to the next line.
    lineStart = lineEnd;
    }

  // Perform variable replacements.
  this->ExpandVariablesInString(output, escapeQuotes, true,
                                atOnly, 0, -1, true, true);
}

int cmMakefile::ConfigureFile(const char* infile, const char* outfile,
                              bool copyonly, bool atOnly, bool escapeQuotes,
                              const cmNewLineStyle& newLine)
{
  int res = 1;
  if ( !this->CanIWriteThisFile(outfile) )
    {
    cmSystemTools::Error("Attempt to write file: ",
                         outfile, " into a source directory.");
    return 0;
    }
  if ( !cmSystemTools::FileExists(infile) )
    {
    cmSystemTools::Error("File ", infile, " does not exist.");
    return 0;
    }
  std::string soutfile = outfile;
  std::string sinfile = infile;
  this->AddCMakeDependFile(sinfile);
  cmSystemTools::ConvertToUnixSlashes(soutfile);

  // Re-generate if non-temporary outputs are missing.
  //when we finalize the configuration we will remove all
  //output files that now don't exist.
  this->AddCMakeOutputFile(soutfile);

  mode_t perm = 0;
  cmSystemTools::GetPermissions(sinfile.c_str(), perm);
  std::string::size_type pos = soutfile.rfind('/');
  if(pos != std::string::npos)
    {
    std::string path = soutfile.substr(0, pos);
    cmSystemTools::MakeDirectory(path.c_str());
    }

  if(copyonly)
    {
    if ( !cmSystemTools::CopyFileIfDifferent(sinfile.c_str(),
                                             soutfile.c_str()))
      {
      return 0;
      }
    }
  else
    {
    std::string newLineCharacters;
    std::ios_base::openmode omode = std::ios_base::out | std::ios_base::trunc;
    if (newLine.IsValid())
      {
      newLineCharacters = newLine.GetCharacters();
      omode |= std::ios::binary;
      }
    else
      {
      newLineCharacters = "\n";
      }
    std::string tempOutputFile = soutfile;
    tempOutputFile += ".tmp";
    cmsys::ofstream fout(tempOutputFile.c_str(), omode);
    if(!fout)
      {
      cmSystemTools::Error(
        "Could not open file for write in copy operation ",
        tempOutputFile.c_str());
      cmSystemTools::ReportLastSystemError("");
      return 0;
      }
    cmsys::ifstream fin(sinfile.c_str());
    if(!fin)
      {
      cmSystemTools::Error("Could not open file for read in copy operation ",
                           sinfile.c_str());
      return 0;
      }

    cmsys::FStream::BOM bom = cmsys::FStream::ReadBOM(fin);
    if(bom != cmsys::FStream::BOM_None &&
       bom != cmsys::FStream::BOM_UTF8)
      {
      std::ostringstream e;
      e << "File starts with a Byte-Order-Mark that is not UTF-8:\n  "
        << sinfile;
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return 0;
      }
    // rewind to copy BOM to output file
    fin.seekg(0);


    // now copy input to output and expand variables in the
    // input file at the same time
    std::string inLine;
    std::string outLine;
    while( cmSystemTools::GetLineFromStream(fin, inLine) )
      {
      outLine = "";
      this->ConfigureString(inLine, outLine, atOnly, escapeQuotes);
      fout << outLine.c_str() << newLineCharacters;
      }
    // close the files before attempting to copy
    fin.close();
    fout.close();
    if ( !cmSystemTools::CopyFileIfDifferent(tempOutputFile.c_str(),
                                             soutfile.c_str()) )
      {
      res = 0;
      }
    else
      {
      cmSystemTools::SetPermissions(soutfile.c_str(), perm);
      }
    cmSystemTools::RemoveFile(tempOutputFile);
    }
  return res;
}

void cmMakefile::SetProperty(const std::string& prop, const char* value)
{
  cmListFileBacktrace lfbt = this->GetBacktrace();
  this->StateSnapshot.GetDirectory().SetProperty(prop, value, lfbt);
}

void cmMakefile::AppendProperty(const std::string& prop,
                                const char* value,
                                bool asString)
{
  cmListFileBacktrace lfbt = this->GetBacktrace();
  this->StateSnapshot.GetDirectory().AppendProperty(prop, value,
                                                    asString, lfbt);
}

const char *cmMakefile::GetProperty(const std::string& prop) const
{
  return this->StateSnapshot.GetDirectory().GetProperty(prop);
}

const char *cmMakefile::GetProperty(const std::string& prop,
                                    bool chain) const
{
  return this->StateSnapshot.GetDirectory().GetProperty(prop, chain);
}

bool cmMakefile::GetPropertyAsBool(const std::string& prop) const
{
  return cmSystemTools::IsOn(this->GetProperty(prop));
}

std::vector<std::string> cmMakefile::GetPropertyKeys() const
{
  return this->StateSnapshot.GetDirectory().GetPropertyKeys();
}

cmTarget* cmMakefile::FindTarget(const std::string& name,
                                 bool excludeAliases) const
{
  if (!excludeAliases)
    {
    std::map<std::string, std::string>::const_iterator i =
        this->AliasTargets.find(name);
    if (i != this->AliasTargets.end())
      {
      cmTargets::iterator ai = this->Targets.find(i->second);
      return &ai->second;
      }
    }
  cmTargets::iterator i = this->Targets.find( name );
  if ( i != this->Targets.end() )
    {
    return &i->second;
    }

  return 0;
}

//----------------------------------------------------------------------------
cmTest* cmMakefile::CreateTest(const std::string& testName)
{
  cmTest* test = this->GetTest(testName);
  if ( test )
    {
    return test;
    }
  test = new cmTest(this);
  test->SetName(testName);
  this->Tests[testName] = test;
  return test;
}

//----------------------------------------------------------------------------
cmTest* cmMakefile::GetTest(const std::string& testName) const
{
  std::map<std::string, cmTest*>::const_iterator
    mi = this->Tests.find(testName);
  if(mi != this->Tests.end())
    {
    return mi->second;
    }
  return 0;
}

void cmMakefile::AddCMakeDependFilesFromUser()
{
  std::vector<std::string> deps;
  if(const char* deps_str = this->GetProperty("CMAKE_CONFIGURE_DEPENDS"))
    {
    cmSystemTools::ExpandListArgument(deps_str, deps);
    }
  for(std::vector<std::string>::iterator i = deps.begin();
      i != deps.end(); ++i)
    {
    if(cmSystemTools::FileIsFullPath(i->c_str()))
      {
      this->AddCMakeDependFile(*i);
      }
    else
      {
      std::string f = this->GetCurrentSourceDirectory();
      f += "/";
      f += *i;
      this->AddCMakeDependFile(f);
      }
    }
}

std::string cmMakefile::FormatListFileStack() const
{
  std::vector<std::string> listFiles;
  cmState::Snapshot snp = this->StateSnapshot;
  while (snp.IsValid())
    {
    listFiles.push_back(snp.GetExecutionListFile());
    snp = snp.GetCallStackParent();
    }
  std::reverse(listFiles.begin(), listFiles.end());
  std::ostringstream tmp;
  size_t depth = listFiles.size();
  if (depth > 0)
    {
    std::vector<std::string>::const_iterator it = listFiles.end();
    do
      {
      if (depth != listFiles.size())
        {
        tmp << "\n                ";
        }
      --it;
      tmp << "[";
      tmp << depth;
      tmp << "]\t";
      tmp << *it;
      depth--;
      }
    while (it != listFiles.begin());
    }
  return tmp.str();
}


void cmMakefile::PushScope()
{
  std::string commandName;
  long line = 0;
  if (!this->ContextStack.empty())
    {
    commandName = this->ContextStack.back()->Name;
    line = this->ContextStack.back()->Line;
    }
  this->StateSnapshot = this->GetState()->CreateVariableScopeSnapshot(
        this->StateSnapshot,
        commandName,
        line);
  this->PushLoopBlockBarrier();

#if defined(CMAKE_BUILD_WITH_CMAKE)
  this->GetGlobalGenerator()->GetFileLockPool().PushFunctionScope();
#endif
}

void cmMakefile::PopScope()
{
#if defined(CMAKE_BUILD_WITH_CMAKE)
  this->GetGlobalGenerator()->GetFileLockPool().PopFunctionScope();
#endif

  this->PopLoopBlockBarrier();

  this->CheckForUnusedVariables();

  this->PopSnapshot();
}

void cmMakefile::RaiseScope(const std::string& var, const char *varDef)
{
  if (var.empty())
    {
    return;
    }

  if (!this->StateSnapshot.RaiseScope(var, varDef))
    {
    std::ostringstream m;
    m << "Cannot set \"" << var << "\": current scope has no parent.";
    this->IssueMessage(cmake::AUTHOR_WARNING, m.str());
    }
}

//----------------------------------------------------------------------------
cmTarget*
cmMakefile::AddImportedTarget(const std::string& name,
                              cmState::TargetType type,
                              bool global)
{
  // Create the target.
  cmsys::auto_ptr<cmTarget> target(new cmTarget);
  target->SetType(type, name);
  target->MarkAsImported(global);
  target->SetMakefile(this);

  // Add to the set of available imported targets.
  this->ImportedTargets[name] = target.get();

  // Transfer ownership to this cmMakefile object.
  this->ImportedTargetsOwned.push_back(target.get());
  return target.release();
}

//----------------------------------------------------------------------------
cmTarget* cmMakefile::FindTargetToUse(const std::string& name,
                                      bool excludeAliases) const
{
  // Look for an imported target.  These take priority because they
  // are more local in scope and do not have to be globally unique.
  TargetMap::const_iterator
    imported = this->ImportedTargets.find(name);
  if(imported != this->ImportedTargets.end())
    {
    return imported->second;
    }

  // Look for a target built in this directory.
  if(cmTarget* t = this->FindTarget(name, excludeAliases))
    {
    return t;
    }

  // Look for a target built in this project.
  return this->GetGlobalGenerator()->FindTarget(name, excludeAliases);
}

//----------------------------------------------------------------------------
bool cmMakefile::IsAlias(const std::string& name) const
{
  if (this->AliasTargets.find(name) != this->AliasTargets.end())
    return true;
  return this->GetGlobalGenerator()->IsAlias(name);
}

//----------------------------------------------------------------------------
bool cmMakefile::EnforceUniqueName(std::string const& name, std::string& msg,
                                   bool isCustom) const
{
  if(this->IsAlias(name))
    {
    std::ostringstream e;
    e << "cannot create target \"" << name
      << "\" because an alias with the same name already exists.";
    msg = e.str();
    return false;
    }
  if(cmTarget* existing = this->FindTargetToUse(name))
    {
    // The name given conflicts with an existing target.  Produce an
    // error in a compatible way.
    if(existing->IsImported())
      {
      // Imported targets were not supported in previous versions.
      // This is new code, so we can make it an error.
      std::ostringstream e;
      e << "cannot create target \"" << name
        << "\" because an imported target with the same name already exists.";
      msg = e.str();
      return false;
      }
    else
      {
      // target names must be globally unique
      switch (this->GetPolicyStatus(cmPolicies::CMP0002))
        {
        case cmPolicies::WARN:
          this->IssueMessage(cmake::AUTHOR_WARNING, cmPolicies::
                             GetPolicyWarning(cmPolicies::CMP0002));
        case cmPolicies::OLD:
          return true;
        case cmPolicies::REQUIRED_IF_USED:
        case cmPolicies::REQUIRED_ALWAYS:
          this->IssueMessage(cmake::FATAL_ERROR,
            cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0002)
            );
          return true;
        case cmPolicies::NEW:
          break;
        }

      // The conflict is with a non-imported target.
      // Allow this if the user has requested support.
      cmake* cm = this->GetCMakeInstance();
      if(isCustom && existing->GetType() == cmState::UTILITY &&
         this != existing->GetMakefile() &&
         cm->GetState()
           ->GetGlobalPropertyAsBool("ALLOW_DUPLICATE_CUSTOM_TARGETS"))
        {
        return true;
        }

      // Produce an error that tells the user how to work around the
      // problem.
      std::ostringstream e;
      e << "cannot create target \"" << name
        << "\" because another target with the same name already exists.  "
        << "The existing target is ";
      switch(existing->GetType())
        {
        case cmState::EXECUTABLE:
          e << "an executable ";
          break;
        case cmState::STATIC_LIBRARY:
          e << "a static library ";
          break;
        case cmState::SHARED_LIBRARY:
          e << "a shared library ";
          break;
        case cmState::MODULE_LIBRARY:
          e << "a module library ";
          break;
        case cmState::UTILITY:
          e << "a custom target ";
          break;
        case cmState::INTERFACE_LIBRARY:
          e << "an interface library ";
          break;
        default: break;
        }
      e << "created in source directory \""
        << existing->GetMakefile()->GetCurrentSourceDirectory() << "\".  "
        << "See documentation for policy CMP0002 for more details.";
      msg = e.str();
      return false;
      }
    }
  return true;
}

//----------------------------------------------------------------------------
bool cmMakefile::EnforceUniqueDir(const std::string& srcPath,
                                  const std::string& binPath) const
{
  // Make sure the binary directory is unique.
  cmGlobalGenerator* gg = this->GetGlobalGenerator();
  if(gg->BinaryDirectoryIsNew(binPath))
    {
    return true;
    }
  std::ostringstream e;
  switch (this->GetPolicyStatus(cmPolicies::CMP0013))
    {
    case cmPolicies::WARN:
      // Print the warning.
      e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0013)
        << "\n"
        << "The binary directory\n"
        << "  " << binPath << "\n"
        << "is already used to build a source directory.  "
        << "This command uses it to build source directory\n"
        << "  " << srcPath << "\n"
        << "which can generate conflicting build files.  "
        << "CMake does not support this use case but it used "
        << "to work accidentally and is being allowed for "
        << "compatibility.";
      this->IssueMessage(cmake::AUTHOR_WARNING, e.str());
    case cmPolicies::OLD:
      // OLD behavior does not warn.
      return true;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
      e << cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0013)
        << "\n";
    case cmPolicies::NEW:
      // NEW behavior prints the error.
      e << "The binary directory\n"
        << "  " << binPath << "\n"
        << "is already used to build a source directory.  "
        << "It cannot be used to build source directory\n"
        << "  " << srcPath << "\n"
        << "Specify a unique binary directory name.";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      break;
    }

  return false;
}

//----------------------------------------------------------------------------
void cmMakefile::AddQtUiFileWithOptions(cmSourceFile *sf)
{
  this->QtUiFilesWithOptions.push_back(sf);
}

//----------------------------------------------------------------------------
std::vector<cmSourceFile*> cmMakefile::GetQtUiFilesWithOptions() const
{
  return this->QtUiFilesWithOptions;
}

static std::string const matchVariables[] = {
  "CMAKE_MATCH_0",
  "CMAKE_MATCH_1",
  "CMAKE_MATCH_2",
  "CMAKE_MATCH_3",
  "CMAKE_MATCH_4",
  "CMAKE_MATCH_5",
  "CMAKE_MATCH_6",
  "CMAKE_MATCH_7",
  "CMAKE_MATCH_8",
  "CMAKE_MATCH_9"
};

static std::string const nMatchesVariable = "CMAKE_MATCH_COUNT";

//----------------------------------------------------------------------------
void cmMakefile::ClearMatches()
{
  const char* nMatchesStr = this->GetDefinition(nMatchesVariable);
  if (!nMatchesStr)
    {
    return;
    }
  int nMatches = atoi(nMatchesStr);
  for (int i=0; i<=nMatches; i++)
    {
    std::string const& var = matchVariables[i];
    std::string const& s = this->GetSafeDefinition(var);
    if(!s.empty())
      {
      this->AddDefinition(var, "");
      this->MarkVariableAsUsed(var);
      }
    }
  this->AddDefinition(nMatchesVariable, "0");
  this->MarkVariableAsUsed(nMatchesVariable);
}

//----------------------------------------------------------------------------
void cmMakefile::StoreMatches(cmsys::RegularExpression& re)
{
  char highest = 0;
  for (int i=0; i<10; i++)
    {
    std::string const& m = re.match(i);
    if(!m.empty())
      {
      std::string const& var = matchVariables[i];
      this->AddDefinition(var, m.c_str());
      this->MarkVariableAsUsed(var);
      highest = static_cast<char>('0' + i);
      }
    }
  char nMatches[] = {highest, '\0'};
  this->AddDefinition(nMatchesVariable, nMatches);
  this->MarkVariableAsUsed(nMatchesVariable);
}

cmState::Snapshot cmMakefile::GetStateSnapshot() const
{
  return this->StateSnapshot;
}

const char* cmMakefile::GetDefineFlagsCMP0059() const
{
  return this->DefineFlagsOrig.c_str();
}

//----------------------------------------------------------------------------
cmPolicies::PolicyStatus
cmMakefile::GetPolicyStatus(cmPolicies::PolicyID id) const
{
  return this->StateSnapshot.GetPolicy(id);
}

//----------------------------------------------------------------------------
bool cmMakefile::PolicyOptionalWarningEnabled(std::string const& var)
{
  // Check for an explicit CMAKE_POLICY_WARNING_CMP<NNNN> setting.
  if(!var.empty())
    {
    if(const char* val = this->GetDefinition(var))
      {
      return cmSystemTools::IsOn(val);
      }
    }
  // Enable optional policy warnings with --debug-output, --trace,
  // or --trace-expand.
  cmake* cm = this->GetCMakeInstance();
  return cm->GetDebugOutput() || cm->GetTrace();
}

bool cmMakefile::SetPolicy(const char *id,
                           cmPolicies::PolicyStatus status)
{
  cmPolicies::PolicyID pid;
  if (!cmPolicies::GetPolicyID(id, /* out */ pid))
    {
    std::ostringstream e;
    e << "Policy \"" << id << "\" is not known to this version of CMake.";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return false;
    }
  return this->SetPolicy(pid,status);
}

//----------------------------------------------------------------------------
bool cmMakefile::SetPolicy(cmPolicies::PolicyID id,
                           cmPolicies::PolicyStatus status)
{
  // A REQUIRED_ALWAYS policy may be set only to NEW.
  if(status != cmPolicies::NEW &&
     cmPolicies::GetPolicyStatus(id) ==
     cmPolicies::REQUIRED_ALWAYS)
    {
    std::string msg =
      cmPolicies::GetRequiredAlwaysPolicyError(id);
    this->IssueMessage(cmake::FATAL_ERROR, msg);
    return false;
    }

  this->StateSnapshot.SetPolicy(id, status);
  return true;
}

//----------------------------------------------------------------------------
cmMakefile::PolicyPushPop::PolicyPushPop(cmMakefile* m): Makefile(m)
{
  this->Makefile->PushPolicy();
}

//----------------------------------------------------------------------------
cmMakefile::PolicyPushPop::~PolicyPushPop()
{
  this->Makefile->PopPolicy();
}

//----------------------------------------------------------------------------
void cmMakefile::PushPolicy(bool weak, cmPolicies::PolicyMap const& pm)
{
  this->StateSnapshot.PushPolicy(pm, weak);
}

//----------------------------------------------------------------------------
void cmMakefile::PopPolicy()
{
  if (!this->StateSnapshot.PopPolicy())
    {
    this->IssueMessage(cmake::FATAL_ERROR,
                       "cmake_policy POP without matching PUSH");
    }
}

//----------------------------------------------------------------------------
void cmMakefile::PopSnapshot(bool reportError)
{
  // cmState::Snapshot manages nested policy scopes within it.
  // Since the scope corresponding to the snapshot is closing,
  // reject any still-open nested policy scopes with an error.
  while (!this->StateSnapshot.CanPopPolicyScope())
    {
    if(reportError)
      {
      this->IssueMessage(cmake::FATAL_ERROR,
                         "cmake_policy PUSH without matching POP");
      reportError = false;
      }
    this->PopPolicy();
    }

  this->StateSnapshot = this->GetState()->Pop(this->StateSnapshot);
  assert(this->StateSnapshot.IsValid());
}

//----------------------------------------------------------------------------
bool cmMakefile::SetPolicyVersion(const char *version)
{
  return cmPolicies::ApplyPolicyVersion(this,version);
}

//----------------------------------------------------------------------------
bool cmMakefile::HasCMP0054AlreadyBeenReported(
    cmListFileContext const& context) const
{
  return !this->CMP0054ReportedIds.insert(context).second;
}

//----------------------------------------------------------------------------
void cmMakefile::RecordPolicies(cmPolicies::PolicyMap& pm)
{
  /* Record the setting of every policy.  */
  typedef cmPolicies::PolicyID PolicyID;
  for(PolicyID pid = cmPolicies::CMP0000;
      pid != cmPolicies::CMPCOUNT; pid = PolicyID(pid+1))
    {
    pm.Set(pid, this->GetPolicyStatus(pid));
    }
}

//----------------------------------------------------------------------------
bool cmMakefile::IgnoreErrorsCMP0061() const
{
  bool ignoreErrors = true;
  switch (this->GetPolicyStatus(cmPolicies::CMP0061))
    {
    case cmPolicies::WARN:
      // No warning for this policy!
    case cmPolicies::OLD:
      break;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
    case cmPolicies::NEW:
      ignoreErrors = false;
      break;
    }
  return ignoreErrors;
}

//----------------------------------------------------------------------------
#define FEATURE_STRING(F) , #F
static const char * const C_FEATURES[] = {
  0
  FOR_EACH_C_FEATURE(FEATURE_STRING)
};

static const char * const CXX_FEATURES[] = {
  0
  FOR_EACH_CXX_FEATURE(FEATURE_STRING)
};
#undef FEATURE_STRING

static const char * const C_STANDARDS[] = {
    "90"
  , "99"
  , "11"
};
static const char * const CXX_STANDARDS[] = {
    "98"
  , "11"
  , "14"
};

//----------------------------------------------------------------------------
bool cmMakefile::
AddRequiredTargetFeature(cmTarget *target, const std::string& feature,
                         std::string *error) const
{
  if (cmGeneratorExpression::Find(feature) != std::string::npos)
    {
    target->AppendProperty("COMPILE_FEATURES", feature.c_str());
    return true;
    }

  std::string lang;
  if (!this->CompileFeatureKnown(target, feature, lang, error))
    {
    return false;
    }

  const char* features = this->CompileFeaturesAvailable(lang, error);
  if (!features)
    {
    return false;
    }

  std::vector<std::string> availableFeatures;
  cmSystemTools::ExpandListArgument(features, availableFeatures);
  if (std::find(availableFeatures.begin(),
                availableFeatures.end(),
                feature) == availableFeatures.end())
    {
    std::ostringstream e;
    e << "The compiler feature \"" << feature
      << "\" is not known to " << lang << " compiler\n\""
      << this->GetDefinition("CMAKE_" + lang + "_COMPILER_ID")
      << "\"\nversion "
      << this->GetDefinition("CMAKE_" + lang + "_COMPILER_VERSION") << ".";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return false;
    }

  target->AppendProperty("COMPILE_FEATURES", feature.c_str());

  return lang == "C"
      ? this->AddRequiredTargetCFeature(target, feature)
      : this->AddRequiredTargetCxxFeature(target, feature);
}

//----------------------------------------------------------------------------
bool cmMakefile::
CompileFeatureKnown(cmTarget const* target, const std::string& feature,
                    std::string& lang, std::string *error) const
{
  assert(cmGeneratorExpression::Find(feature) == std::string::npos);

  bool isCFeature = std::find_if(cmArrayBegin(C_FEATURES) + 1,
              cmArrayEnd(C_FEATURES), cmStrCmp(feature))
              != cmArrayEnd(C_FEATURES);
  if (isCFeature)
    {
    lang = "C";
    return true;
    }
  bool isCxxFeature = std::find_if(cmArrayBegin(CXX_FEATURES) + 1,
              cmArrayEnd(CXX_FEATURES), cmStrCmp(feature))
              != cmArrayEnd(CXX_FEATURES);
  if (isCxxFeature)
    {
    lang = "CXX";
    return true;
    }
  std::ostringstream e;
  if (error)
    {
    e << "specified";
    }
  else
    {
    e << "Specified";
    }
  e << " unknown feature \"" << feature << "\" for "
    "target \"" << target->GetName() << "\".";
  if (error)
    {
    *error = e.str();
    }
  else
    {
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    }
  return false;
}

//----------------------------------------------------------------------------
const char* cmMakefile::
CompileFeaturesAvailable(const std::string& lang, std::string *error) const
{
  const char* featuresKnown =
    this->GetDefinition("CMAKE_" + lang + "_COMPILE_FEATURES");

  if (!featuresKnown || !*featuresKnown)
    {
    std::ostringstream e;
    if (error)
      {
      e << "no";
      }
    else
      {
      e << "No";
      }
    e << " known features for " << lang << " compiler\n\""
      << this->GetDefinition("CMAKE_" + lang + "_COMPILER_ID")
      << "\"\nversion "
      << this->GetDefinition("CMAKE_" + lang + "_COMPILER_VERSION") << ".";
    if (error)
      {
      *error = e.str();
      }
    else
      {
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      }
    return 0;
    }
  return featuresKnown;
}

//----------------------------------------------------------------------------
bool cmMakefile::HaveStandardAvailable(cmTarget const* target,
                                      std::string const& lang,
                                      const std::string& feature) const
{
  return lang == "C"
      ? this->HaveCStandardAvailable(target, feature)
      : this->HaveCxxStandardAvailable(target, feature);
}

//----------------------------------------------------------------------------
bool cmMakefile::
HaveCStandardAvailable(cmTarget const* target,
                       const std::string& feature) const
{
  const char* defaultCStandard =
    this->GetDefinition("CMAKE_C_STANDARD_DEFAULT");
  if (!defaultCStandard)
    {
    std::ostringstream e;
    e << "CMAKE_C_STANDARD_DEFAULT is not set.  COMPILE_FEATURES support "
      "not fully configured for this compiler.";
    this->IssueMessage(cmake::INTERNAL_ERROR, e.str());
    // Return true so the caller does not try to lookup the default standard.
    return true;
    }
  if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS),
                cmStrCmp(defaultCStandard)) == cmArrayEnd(C_STANDARDS))
    {
    std::ostringstream e;
    e << "The CMAKE_C_STANDARD_DEFAULT variable contains an "
         "invalid value: \"" << defaultCStandard << "\".";
    this->IssueMessage(cmake::INTERNAL_ERROR, e.str());
    return false;
    }

  bool needC90 = false;
  bool needC99 = false;
  bool needC11 = false;

  this->CheckNeededCLanguage(feature, needC90, needC99, needC11);

  const char *existingCStandard = target->GetProperty("C_STANDARD");
  if (!existingCStandard)
    {
    existingCStandard = defaultCStandard;
    }

  if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS),
                cmStrCmp(existingCStandard)) == cmArrayEnd(C_STANDARDS))
    {
    std::ostringstream e;
    e << "The C_STANDARD property on target \"" << target->GetName()
      << "\" contained an invalid value: \"" << existingCStandard << "\".";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return false;
    }

  const char * const *existingCIt = existingCStandard
                                    ? std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp(existingCStandard))
                                    : cmArrayEnd(C_STANDARDS);

  if (needC11 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("11")))
    {
    return false;
    }
  else if(needC99 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("99")))
    {
    return false;
    }
  else if(needC90 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("90")))
    {
    return false;
    }
  return true;
}

//----------------------------------------------------------------------------
bool cmMakefile::IsLaterStandard(std::string const& lang,
                                 std::string const& lhs,
                                 std::string const& rhs)
{
  if (lang == "C")
    {
    const char * const *rhsIt = std::find_if(cmArrayBegin(C_STANDARDS),
                                            cmArrayEnd(C_STANDARDS),
                                            cmStrCmp(rhs));

    return std::find_if(rhsIt, cmArrayEnd(C_STANDARDS),
                        cmStrCmp(lhs)) != cmArrayEnd(C_STANDARDS);
    }
  const char * const *rhsIt = std::find_if(cmArrayBegin(CXX_STANDARDS),
                                           cmArrayEnd(CXX_STANDARDS),
                                           cmStrCmp(rhs));

  return std::find_if(rhsIt, cmArrayEnd(CXX_STANDARDS),
                      cmStrCmp(lhs)) != cmArrayEnd(CXX_STANDARDS);
}

//----------------------------------------------------------------------------
bool cmMakefile::HaveCxxStandardAvailable(cmTarget const* target,
                                         const std::string& feature) const
{
  const char* defaultCxxStandard =
    this->GetDefinition("CMAKE_CXX_STANDARD_DEFAULT");
  if (!defaultCxxStandard)
    {
    std::ostringstream e;
    e << "CMAKE_CXX_STANDARD_DEFAULT is not set.  COMPILE_FEATURES support "
      "not fully configured for this compiler.";
    this->IssueMessage(cmake::INTERNAL_ERROR, e.str());
    // Return true so the caller does not try to lookup the default standard.
    return true;
    }
  if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS),
                cmStrCmp(defaultCxxStandard)) == cmArrayEnd(CXX_STANDARDS))
    {
    std::ostringstream e;
    e << "The CMAKE_CXX_STANDARD_DEFAULT variable contains an "
         "invalid value: \"" << defaultCxxStandard << "\".";
    this->IssueMessage(cmake::INTERNAL_ERROR, e.str());
    return false;
    }

  bool needCxx98 = false;
  bool needCxx11 = false;
  bool needCxx14 = false;
  this->CheckNeededCxxLanguage(feature, needCxx98, needCxx11, needCxx14);

  const char *existingCxxStandard = target->GetProperty("CXX_STANDARD");
  if (!existingCxxStandard)
    {
    existingCxxStandard = defaultCxxStandard;
    }

  if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS),
                cmStrCmp(existingCxxStandard)) == cmArrayEnd(CXX_STANDARDS))
    {
    std::ostringstream e;
    e << "The CXX_STANDARD property on target \"" << target->GetName()
      << "\" contained an invalid value: \"" << existingCxxStandard << "\".";
    this->IssueMessage(cmake::FATAL_ERROR, e.str());
    return false;
    }

  const char * const *existingCxxIt = existingCxxStandard
                                    ? std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp(existingCxxStandard))
                                    : cmArrayEnd(CXX_STANDARDS);

  if (needCxx11 && existingCxxIt < std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp("11")))
    {
    return false;
    }
  else if(needCxx98 && existingCxxIt <
                                    std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp("98")))
    {
    return false;
    }
  return true;
}

//----------------------------------------------------------------------------
void cmMakefile::CheckNeededCxxLanguage(const std::string& feature,
                                        bool& needCxx98,
                                        bool& needCxx11,
                                        bool& needCxx14) const
{
  if (const char *propCxx98 =
          this->GetDefinition("CMAKE_CXX98_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propCxx98, props);
    needCxx98 = std::find(props.begin(), props.end(), feature) != props.end();
    }
  if (const char *propCxx11 =
          this->GetDefinition("CMAKE_CXX11_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propCxx11, props);
    needCxx11 = std::find(props.begin(), props.end(), feature) != props.end();
    }
  if (const char *propCxx14 =
          this->GetDefinition("CMAKE_CXX14_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propCxx14, props);
    needCxx14 = std::find(props.begin(), props.end(), feature) != props.end();
    }
}

//----------------------------------------------------------------------------
bool cmMakefile::
AddRequiredTargetCxxFeature(cmTarget *target,
                            const std::string& feature) const
{
  bool needCxx98 = false;
  bool needCxx11 = false;
  bool needCxx14 = false;

  this->CheckNeededCxxLanguage(feature, needCxx98, needCxx11, needCxx14);

  const char *existingCxxStandard = target->GetProperty("CXX_STANDARD");
  if (existingCxxStandard)
    {
    if (std::find_if(cmArrayBegin(CXX_STANDARDS), cmArrayEnd(CXX_STANDARDS),
                  cmStrCmp(existingCxxStandard)) == cmArrayEnd(CXX_STANDARDS))
      {
      std::ostringstream e;
      e << "The CXX_STANDARD property on target \"" << target->GetName()
        << "\" contained an invalid value: \"" << existingCxxStandard << "\".";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return false;
      }
    }
  const char * const *existingCxxIt = existingCxxStandard
                                    ? std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp(existingCxxStandard))
                                    : cmArrayEnd(CXX_STANDARDS);

  bool setCxx98 = needCxx98 && !existingCxxStandard;
  bool setCxx11 = needCxx11 && !existingCxxStandard;
  bool setCxx14 = needCxx14 && !existingCxxStandard;

  if (needCxx14 && existingCxxStandard && existingCxxIt <
                                    std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp("14")))
    {
    setCxx14 = true;
    }
  else if (needCxx11 && existingCxxStandard && existingCxxIt <
                                    std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp("11")))
    {
    setCxx11 = true;
    }
  else if(needCxx98 && existingCxxStandard && existingCxxIt <
                                    std::find_if(cmArrayBegin(CXX_STANDARDS),
                                      cmArrayEnd(CXX_STANDARDS),
                                      cmStrCmp("98")))
    {
    setCxx98 = true;
    }

  if (setCxx14)
    {
    target->SetProperty("CXX_STANDARD", "14");
    }
  else if (setCxx11)
    {
    target->SetProperty("CXX_STANDARD", "11");
    }
  else if (setCxx98)
    {
    target->SetProperty("CXX_STANDARD", "98");
    }
  return true;
}

//----------------------------------------------------------------------------
void cmMakefile::CheckNeededCLanguage(const std::string& feature,
                                        bool& needC90,
                                        bool& needC99,
                                        bool& needC11) const
{
  if (const char *propC90 =
          this->GetDefinition("CMAKE_C90_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propC90, props);
    needC90 = std::find(props.begin(), props.end(), feature) != props.end();
    }
  if (const char *propC99 =
          this->GetDefinition("CMAKE_C99_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propC99, props);
    needC99 = std::find(props.begin(), props.end(), feature) != props.end();
    }
  if (const char *propC11 =
          this->GetDefinition("CMAKE_C11_COMPILE_FEATURES"))
    {
    std::vector<std::string> props;
    cmSystemTools::ExpandListArgument(propC11, props);
    needC11 = std::find(props.begin(), props.end(), feature) != props.end();
    }
}

//----------------------------------------------------------------------------
bool cmMakefile::
AddRequiredTargetCFeature(cmTarget *target, const std::string& feature) const
{
  bool needC90 = false;
  bool needC99 = false;
  bool needC11 = false;

  this->CheckNeededCLanguage(feature, needC90, needC99, needC11);

  const char *existingCStandard = target->GetProperty("C_STANDARD");
  if (existingCStandard)
    {
    if (std::find_if(cmArrayBegin(C_STANDARDS), cmArrayEnd(C_STANDARDS),
                  cmStrCmp(existingCStandard)) == cmArrayEnd(C_STANDARDS))
      {
      std::ostringstream e;
      e << "The C_STANDARD property on target \"" << target->GetName()
        << "\" contained an invalid value: \"" << existingCStandard << "\".";
      this->IssueMessage(cmake::FATAL_ERROR, e.str());
      return false;
      }
    }
  const char * const *existingCIt = existingCStandard
                                    ? std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp(existingCStandard))
                                    : cmArrayEnd(C_STANDARDS);

  bool setC90 = needC90 && !existingCStandard;
  bool setC99 = needC99 && !existingCStandard;
  bool setC11 = needC11 && !existingCStandard;

  if (needC11 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("11")))
    {
    setC11 = true;
    }
  else if(needC99 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("99")))
    {
    setC99 = true;
    }
  else if(needC90 && existingCStandard && existingCIt <
                                    std::find_if(cmArrayBegin(C_STANDARDS),
                                      cmArrayEnd(C_STANDARDS),
                                      cmStrCmp("90")))
    {
    setC90 = true;
    }

  if (setC11)
    {
    target->SetProperty("C_STANDARD", "11");
    }
  else if (setC99)
    {
    target->SetProperty("C_STANDARD", "99");
    }
  else if (setC90)
    {
    target->SetProperty("C_STANDARD", "90");
    }
  return true;
}


cmMakefile::FunctionPushPop::FunctionPushPop(cmMakefile* mf,
                                             const std::string& fileName,
                                             cmPolicies::PolicyMap const& pm)
  : Makefile(mf), ReportError(true)
{
  this->Makefile->PushFunctionScope(fileName, pm);
}

cmMakefile::FunctionPushPop::~FunctionPushPop()
{
  this->Makefile->PopFunctionScope(this->ReportError);
}


cmMakefile::MacroPushPop::MacroPushPop(cmMakefile* mf,
                                       const std::string& fileName,
                                       const cmPolicies::PolicyMap& pm)
  : Makefile(mf), ReportError(true)
{
  this->Makefile->PushMacroScope(fileName, pm);
}

cmMakefile::MacroPushPop::~MacroPushPop()
{
  this->Makefile->PopMacroScope(this->ReportError);
}

cmMakefileCall::cmMakefileCall(cmMakefile* mf, const cmCommandContext& lfc,
                               cmExecutionStatus& status): Makefile(mf)
{
  this->Makefile->ContextStack.push_back(&lfc);
  this->Makefile->ExecutionStatusStack.push_back(&status);
}

cmMakefileCall::~cmMakefileCall()
{
  this->Makefile->ExecutionStatusStack.pop_back();
  this->Makefile->ContextStack.pop_back();
}