[Cmake] CMAKE_ROOT

[Bill Hoffman]

Search for CMAKE_ROOT in the MFC dialog source, and you can see what you need
to do.

//! Load cache file from m_WhereBuild and display in GUI editor
void CMakeSetupDialog::LoadCacheFromDiskToGUI()
{
  if(m_WhereBuild != "")
    {
    cmCacheManager::GetInstance()->LoadCache(m_WhereBuild);
    
    // Find our own exectuable.
    char fname[1024];
    ::GetModuleFileName(NULL,fname,1023);
    std::string root = cmSystemTools::GetProgramPath(fname);
    std::string::size_type slashPos = root.rfind("/");
    if(slashPos != std::string::npos)      
      {
      root = root.substr(0, slashPos);
      }
    cmCacheManager::GetInstance()->AddCacheEntry
      ("CMAKE_ROOT", root.c_str(),
       "Path to CMake installation.", cmCacheManager::INTERNAL);
    std::string cMakeCMD = "\""+cmSystemTools::GetProgramPath(fname);
    cMakeCMD += "/cmake.exe\"";
    
    // Save the value in the cache
    cmCacheManager::GetInstance()->AddCacheEntry("CMAKE_COMMAND",
                                                 cMakeCMD.c_str(),
                                                 "Path to CMake executable.",
                                                 cmCacheManager::INTERNAL);
    this->FillCacheGUIFromCacheManager();
    }
}

However, that being said, I am about to change the GUI code to use
the cmake class that the command line version uses.  Once that is done,
it will be easier to write a GUI.



At 04:06 PM 5/30/2001 +0100, John Biddiscombe wrote:

>>How are you trying to run it?   I assume you are not running the GUI..
>
>I've got my own GUI and all I do is this
>
>    if (makefile) delete makefile;
>    makefile = new cmMakefile();
>    //
>    if (pg) delete pg;
>    pg = new cmBCBMakefile(NULL); * * * * * * LOOK HERE !!!!
>    //
>    makefile->SetMakefileGenerator(pg);
>    makefile->SetHomeDirectory(e_vtkdir->Text.c_str());
>    makefile->SetStartDirectory(e_vtkdir->Text.c_str());
>    makefile->SetStartOutputDirectory(e_output->Text.c_str());
>    makefile->SetHomeOutputDirectory(e_output->Text.c_str());
>    //
>    makefile->MakeStartDirectoriesCurrent();
>    cmCacheManager::GetInstance()->LoadCache(makefile);
>    makefile->ReadListFile(e_makelists->Text.c_str());
>    makefile->GenerateMakefile();
>    this->FillCacheGUIFromCacheManager();
>
>I just get endless errors when doing
>makefile->ReadListFile(e_makelists->Text.c_str());
>I've added CMAKE_ROOT to my cache, but the real problem is that it seems it never gets expanded out to its value, the error says
>can't find....$(CMAKE_ROOT)/modules/opengl.cmake
>which means it never converts CMAKE_ROOT into a path.
>
>If I look at MSProject generator, which does this
>
>void cmMSProjectGenerator::ComputeSystemInfo()
>{
>  // now load the settings
>  std::string fpath =
>    cmCacheManager::GetInstance()->GetCacheValue("CMAKE_ROOT");
>  fpath += "/Templates/CMakeWindowsSystemConfig.cmake";
>  m_Makefile->ReadListFile(NULL,fpath.c_str());
>}
>
>it just crashes with access violation on the GetCacheValue stuff
>
>any help gratefully received.
>
>JB