Source/cmOptionCommand.cxx

   1 /*=========================================================================
   2
   3   Program:   Insight Segmentation & Registration Toolkit
   4   Module:    $RCSfile: cmOptionCommand.cxx,v $
   5   Language:  C++
   6   Date:      $Date: 2002-04-25 11:59:57 $
   7   Version:   $Revision: 1.17 $
   8
   9   Copyright (c) 2002 Insight Consortium. All rights reserved.
  10   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
  11
  12      This software is distributed WITHOUT ANY WARRANTY; without even
  13      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  14      PURPOSE.  See the above copyright notices for more information.
  15
  16 =========================================================================*/
  17 #include "cmOptionCommand.h"
  18
  19 // cmOptionCommand
  20 bool cmOptionCommand::InitialPass(std::vector<std::string> const& args)
  21 {
  22   bool argError = false;
  23   if(args.size() < 2)
  24     {
  25     argError = true;
  26     }
  27   // for VTK 4.0 we have to support the option command with more than 3 arguments
  28   // if CMAKE_MINIMUM_REQUIRED_VERSION is not defined, if CMAKE_MINIMUM_REQUIRED_VERSION
  29   // is defined, then we can have stricter checking.
  30   if(m_Makefile->GetDefinition("CMAKE_MINIMUM_REQUIRED_VERSION"))
  31     {
  32     if(args.size() > 3)
  33       {
  34       argError = true;
  35       }
  36     }
  37   if(argError)
  38     {
  39     std::string m = "called with incorrect number of arguments: ";
  40     for(size_t i =0; i < args.size(); ++i)
  41       {
  42       m += args[i];
  43       m += " ";
  44       }
  45     this->SetError(m.c_str());
  46     return false;
  47     }
  48
  49   // Now check and see if the value has been stored in the cache
  50   // already, if so use that value and don't look for the program
  51   const char* cacheValue
  52     = m_Makefile->GetDefinition(args[0].c_str());
  53   if(!cacheValue)
  54     {
  55     std::string initialValue = "Off";
  56     if(args.size() == 3)
  57       {
  58       initialValue = args[2];
  59       }
  60     m_Makefile->AddCacheDefinition(args[0].c_str(),
  61                                    cmSystemTools::IsOn(initialValue.c_str()),
  62                                    args[1].c_str());
  63     }
  64   return true;
  65 }