program update_lcl_docs;

{ Runs the FPC fpdoc document generator to generate LCL and LazUtils
  documentation in CHM or HTML format }

{$mode objfpc}{$H+}
{$IFDEF MSWINDOWS}
{$APPTYPE console}
{$ENDIF}

uses
  Classes, Sysutils, GetOpts, LazFileUtils, FileUtil, UTF8Process,
  LazStringUtils, Process;

var
  DefaultFPDocExe: string = 'fpdoc';
  DefaultCSSFile: string = 'fpdoc.css';
  WarningsCount: Integer;
  Verbosity: integer;
  ShowCmd: Boolean;
  EnvParams: String;
  DefaultXCTDir: String;
  DefaultFPDocParams: string = '';
  DefaultOutFormat: string = 'html';
  DefaultFooterFilename: string = ''; // default is no footer(s)

type
  TFPDocRunStep = (
    frsCreated,
    frsVarsInitialized,
    frsFilesGathered,
    frsOutDirCreated,
    frsFPDocExecuted,
    frsCopiedToXCTDir,
    frsComplete
    );
  TFPDocRunOption = (
    foCopyToXCTDir  // copy the created chm and xct file to the xct directory
    );
  TFPDocRunOptions = set of TFPDocRunOption;
const
  DefaultFPDocRunOptions = [foCopyToXCTDir];

type

  { TFPDocRun }

  TFPDocRun = class
  private
    FCSSFile: String;
    FFooterFilename: String;
    FFPDocExe: String;
    FIncludePath: string;
    FInputFile: string;
    FOptions: TFPDocRunOptions;
    FOutDir: string;
    FOutFormat: String;
    FPackageName: string;
    FPasSrcDir: string;
    FStep: TFPDocRunStep;
    FUsedPkgs: TStringList;
    FXCTDir: string;
    FXCTFile: string;
    FXMLSrcDir: string;
    FExtraOptions : String;
    procedure SetCSSFile(AValue: String);
    procedure SetFooterFilename(AValue: String);
    procedure SetIncludePath(AValue: string);
    procedure SetInputFile(AValue: string);
    procedure SetOutDir(AValue: string);
    procedure SetPasSrcDir(AValue: string);
    procedure SetXCTDir(AValue: string);
    procedure SetXMLSrcDir(AValue: string);
  public
    Params: TStringList;
    ParseParams: string;
    constructor Create(aPackageName: string);
    destructor Destroy; override;
    procedure InitVars;
    procedure AddFilesToList(Dir: String; List: TStrings);
    procedure FindSourceFiles;
    procedure CreateOutputDir;
    procedure RunFPDoc;
    procedure CopyToXCTDir;
    procedure Execute;
    property Options: TFPDocRunOptions read FOptions write FOptions default DefaultFPDocRunOptions;
    property CSSFile: String read FCSSFile write SetCSSFile;
    property FooterFilename: String read FFooterFilename write SetFooterFilename;
    property FPDocExe: String read FFPDocExe write FFPDocExe;
    property IncludePath: string read FIncludePath write SetIncludePath;// semicolon separated search path
    property InputFile: string read FInputFile write SetInputFile; // relative to OutDir, automatically created
    property OutDir: string read FOutDir write SetOutDir;
    property OutFormat: String read FOutFormat write FOutFormat;
    property PackageName: string read FPackageName;
    property PasSrcDir: string read FPasSrcDir write SetPasSrcDir;
    property Step: TFPDocRunStep read FStep;
    property UsedPkgs: TStringList read FUsedPkgs; // e.g. 'rtl','fcl', 'lcl', 'lazutils'
    property XCTDir: string read FXCTDir write SetXCTDir;
    property XMLSrcDir: string read FXMLSrcDir write SetXMLSrcDir;
    property XCTFile: string read FXCTFile;
    property ExtraOptions : string read FExtraOptions write FExtraOptions;
  end;

procedure GetEnvDef(var S: String; DefaultValue: String; EnvName: String);
begin
  S := GetEnvironmentVariable(EnvName);
  if S = '' then
    S := DefaultValue;
end;

function FileInEnvPATH(FileName: String): Boolean;
var
  FullFilename: String;
begin
  FullFilename:=FindDefaultExecutablePath(Filename);
  Result:=(FullFilename<>'') and not DirectoryExistsUTF8(FullFilename);
end;

procedure PrintHelp;
begin
  WriteLn('Usage for '+ ExtractFileName(ParamStr(0)), ':');
  WriteLn;
  Writeln('    --css-file <value> (CHM format only) CSS file to be used by fpdoc');
  Writeln('                       for the layout of the help pages. Default is "',DefaultCSSFile,'"');
  WriteLn('    --fpdoc <value>    The full path to fpdoc to use. Default is "',DefaultFPDocExe,'"');
  WriteLn('    --fpcdocs <value>  The directory that contains the required .xct files.');
  WriteLn('                       Use this to make help that contains links to rtl and fcl');
  WriteLn('    --footer <value>   Filename of a file to use a footer used in the generated pages.');
  WriteLn('                       Default is "'+DefaultFooterFilename+'"');
  WriteLn('    --help             Show this message');
  WriteLn('    --arg <value>      Passes value to fpdoc as an arg. Use this option as');
  WriteLn('                       many times as needed.');
  WriteLn('    --outfmt html|chm  Use value as the format fpdoc will use. Default is "'+DefaultOutFormat+'"');
  WriteLn('    --showcmd          Print the command that would be run instead if running it.');
  WriteLn('    --warnings         Show warnings while working.');
  WriteLn('    --verbose          be more verbose');
  WriteLn;
  WriteLn('The following are environment variables that will override the above params if set:');
  WriteLn('     FPDOCFORMAT, FPDOCPARAMS, FPDOC, FPDOCFOOTER, FPCDOCS, RTLLINKPREFIX, FCLLINKPREFIX, <Pkg>LINKPREFIX, ...');
  WriteLn;
  Halt(0);
end;

procedure ReadOptions;
var
  c: char;
  Options: array of TOption;
  OptIndex: Longint;
begin
  ShowCmd := False;
  WarningsCount:=-1;
  SetLength(Options, 10);

  Options[0].Name:='help';
  Options[1].Name:='arg';
  Options[1].Has_arg:=1;
  Options[2].Name:='fpdoc';
  Options[2].Has_arg:=1;
  Options[3].Name:='outfmt';
  Options[3].Has_arg:=1;
  Options[4].Name:='showcmd';
  Options[5].Name:='fpcdocs';
  Options[5].Has_arg:=1;
  Options[6].Name:='footer';
  Options[6].Has_arg:=1;
  Options[7].Name:='warnings';
  Options[8].Name:='css-file';
  Options[8].Has_arg:=1;
  Options[9].Name:='verbose';
  OptIndex:=0;
  repeat
    c := GetLongOpts('help arg: fpdoc: outfmt: showcmd fpcdocs: footer: warnings css-file verbose', @Options[0], OptIndex);
    case c of
      #0:
         begin
           //WriteLn(Options[OptIndex-1].Name, ' = ', OptArg);
           case OptIndex-1 of
             0:  PrintHelp;
             1:  DefaultFPDocParams := DefaultFPDocParams + ' ' + OptArg;
             2:  DefaultFPDocExe := OptArg;
             3:  DefaultOutFormat := OptArg;
             4:  ShowCmd := True;
             5:  DefaultXCTDir := OptArg;
             6:  DefaultFooterFilename := OptArg;
             7:  WarningsCount:=0;
             8:  DefaultCssFile := OptArg;
             9:  inc(Verbosity);
           else
             WriteLn('Unknown Value: ', OptIndex);
           end;
         end;
      '?': PrintHelp;
      EndOfOptions: Break;
    else
      WriteLn('Unknown option -',c,' ',OptArg);
      PrintHelp;
    end;
  until c = EndOfOptions;

  GetEnvDef(DefaultOutFormat, DefaultOutFormat, 'FPDOCFORMAT');
  GetEnvDef(EnvParams, '', 'FPDOCPARAMS');
  GetEnvDef(DefaultFPDocExe, DefaultFPDocExe, 'FPDOC');
  GetEnvDef(DefaultFooterFilename, DefaultFooterFilename, 'FPDOCFOOTER');
  GetEnvDef(DefaultXCTDir, DefaultXCTDir, 'FPCDOCS');

  if DefaultOutFormat = '' then
  begin
    writeln('Error: Parameter outfmt is missing');
    PrintHelp;
  end;
end;

{ TFPDocRun }

procedure TFPDocRun.SetInputFile(AValue: string);
begin
  AValue:=TrimFilename(AValue);
  if FInputFile=AValue then Exit;
  FInputFile:=AValue;
end;

procedure TFPDocRun.SetOutDir(AValue: string);
begin
  AValue:=TrimAndExpandFilename(AValue);
  if FOutDir=AValue then Exit;
  FOutDir:=AValue;
end;

procedure TFPDocRun.SetIncludePath(AValue: string);
begin
  if FIncludePath=AValue then Exit;
  FIncludePath:=AValue;
end;

procedure TFPDocRun.SetCSSFile(AValue: String);
begin
  AValue:=TrimAndExpandFilename(AValue);
  if FCSSFile=AValue then Exit;
  FCSSFile:=AValue;
end;

{ Handles fpdoc 3.3.1 changed usage of the --footer argument. It can be
   either a string with the content for the footer, or a file name when
   prefixed with @. Handles both old and new syntax.
   @ cannot be included in the call to TrimAndExpandFilename.
   All file name validation occurs here. }
procedure TFPDocRun.SetFooterFilename(AValue: String);
var
  vFilename: String;
begin
  vFileName := '';
  if (AValue <> '') then
  begin
    // check for fpdoc 3.3.1 file name with @ prefix
    if (AValue[1] = '@') then
    begin
      vFilename := TrimAndExpandFilename(Copy(AValue, 2, Length(AValue)-1));
      if not FileExistsUTF8(vFileName) then
         AValue := '"Footer file not found: @' + vFileName + '"'
      else
         AValue := '@' + vFilename;
    end
    // wrap anything with spaces in Quote characters when needed
    else if (Pos(' ', AValue) <> 0) and (aValue[1] <> '"') then
    begin
     AValue :='"' + AValue + '"';
    end
    // expand and validate file name without the @ prefix
    else
    begin
      vFilename := TrimAndExpandFilename(AValue);
      if FileExistsUTF8(vFileName) then AValue := vFilename;
    end;
  end;
  if FFooterFilename = AValue then Exit;
  FFooterFilename := AValue;
end;

procedure TFPDocRun.SetPasSrcDir(AValue: string);
begin
  AValue:=TrimAndExpandFilename(AValue);
  if FPasSrcDir=AValue then Exit;
  FPasSrcDir:=AValue;
end;

procedure TFPDocRun.SetXCTDir(AValue: string);
begin
  AValue:=TrimAndExpandFilename(AValue);
  if FXCTDir=AValue then Exit;
  FXCTDir:=AValue;
end;

procedure TFPDocRun.SetXMLSrcDir(AValue: string);
begin
  AValue:=TrimAndExpandFilename(AValue);
  if FXMLSrcDir=AValue then Exit;
  FXMLSrcDir:=AValue;
end;

constructor TFPDocRun.Create(aPackageName: string);
begin
  FPackageName:=aPackageName;
  FOptions:=DefaultFPDocRunOptions;
  fUsedPkgs:=TStringList.Create;
  InputFile := 'inputfile.txt';
  OutDir:=PackageName;
  FPDocExe:=TrimFilename(DefaultFPDocExe);
  CSSFile:=DefaultCSSFile;
  Params:=TStringList.Create;
  SplitCmdLineParams(DefaultFPDocParams,Params);
  OutFormat:=DefaultOutFormat;
  FooterFilename:=DefaultFooterFilename;
  XCTDir:=DefaultXCTDir;

  FStep:=frsCreated;
end;

destructor TFPDocRun.Destroy;
begin
  FreeAndNil(fUsedPkgs);
  inherited Destroy;
end;

procedure TFPDocRun.InitVars;
var
  Pkg, Prefix, IncludeDir, Param: String;
  p: Integer;
begin
  if ord(Step)>=ord(frsVarsInitialized) then
    raise Exception.Create('TFPDocRun.InitVars not again');

  // add IncludePath to ParseParams
  p:=1;
  while p<=length(IncludePath) do begin
    IncludeDir:=GetNextDelimitedItem(IncludePath,';',p);
    if IncludeDir='' then continue;
    IncludeDir:=TrimAndExpandFilename(ChompPathDelim(IncludeDir));
    ParseParams+=' -Fi'+CreateRelativePath(IncludeDir,OutDir);
  end;

  FXCTFile:=AppendPathDelim(OutDir)+PackageName+'.xct';

  Params.Add('--content='+CreateRelativePath(XCTFile,OutDir));
  Params.Add('--package='+PackageName);
  Params.Add('--descr='+CreateRelativePath(AppendPathDelim(XMLSrcDir)+PackageName+'.xml',OutDir));
  Params.Add('--format='+OutFormat);
  if FilenameIsAbsolute(InputFile) then
    Params.Add('--input=@'+CreateRelativePath(InputFile,OutDir))
  else
    Params.Add('--input=@'+InputFile);

  if XCTDir <> '' then
  begin
    for Pkg in UsedPkgs do
    begin
      Prefix:='';
      if OutFormat = 'html' then
        Prefix:='../'+Lowercase(Pkg)+'/'
      else if OutFormat = 'chm' then
        Prefix:='ms-its:'+LowerCase(Pkg)+'.chm::/'
      else
        Prefix:='';
      GetEnvDef(Prefix, Prefix, UpperCase(Pkg)+'LINKPREFIX');

      Param:='--import='+CreateRelativePath(AppendPathDelim(XCTDir)+LowerCase(Pkg)+'.xct',OutDir);
      if Prefix<>'' then
        Param+=','+Prefix;
      Params.Add(Param);
    end;
  end;
  
  if OutFormat='chm' then
  begin
    Params.Add('--output='+ ChangeFileExt(PackageName, '.chm'));
    Params.Add('--auto-toc');
    Params.Add('--auto-index');
    Params.Add('--make-searchable');

    // set an explicit title used in the LHelp TOC navigation tree
    if (LowerCase(PackageName) = 'lcl') then
      Params.Add('--chm-title="(LCL) Lazarus Component Library"')
    else
      Params.Add('--chm-title="(LazUtils) Lazarus Utilities"');

    if CSSFile<>'' then
      Params.Add('--css-file='+ExtractFileName(CSSFile)); // the css file is copied to the OutDir
  end;

  { In fpdoc 3.3.1 footerfilename is no longer just a file name. It can be the
    footer text or a file name when prefixed with @.
    Validation and quoting handled in the property setter. }
  if (FooterFilename<>'') then // and FileExistsUTF8(FooterFilename) then
    Params.Add('--footer='+FooterFilename);

  if EnvParams<>'' then
    SplitCmdLineParams(EnvParams,Params);

  if Verbosity>0 then
  begin
    writeln('Verbose Params: ------------------');
    writeln('FPDocExe=',FPDocExe);
    writeln('OutFormat=',OutFormat);
    writeln('CSSFile=',CSSFile);
    writeln('FooterFilename=',FooterFilename);
    writeln('InputFile=',InputFile);
    writeln('OutDir=',OutDir);
    writeln('ParseParams=');
    writeln(ParseParams);
    writeln('FPDocParams=');
    writeln(Params.Text);
    writeln('----------------------------------');
  end;

  FStep:=frsVarsInitialized;
end;

procedure TFPDocRun.AddFilesToList(Dir: String; List: TStrings);
var
  FRec: TSearchRec;
begin
  Dir:=AppendPathDelim(TrimFilename(Dir));
  if FindFirstUTF8(Dir+AllFilesMask, faAnyFile, FRec)=0 then
    repeat
      //WriteLn('Checking file ' +FRec.Name);
      if (FRec.Name='') or (FRec.Name='.') or (FRec.Name='..') then continue;
      if (FRec.Name='fpmake.pp') then continue;
      if ((FRec.Attr and faDirectory) <> 0) then
      begin
        AddFilesToList(Dir+FRec.Name, List);
        //WriteLn('Checking Subfolder ',Dir+ FRec.Name);
      end
      else if FilenameHasPascalExt(FRec.Name) then
      begin
        List.Add(Dir+FRec.Name);
      end;
    until FindNextUTF8(FRec)<>0;
  FindCloseUTF8(FRec);
end;

procedure TFPDocRun.FindSourceFiles;
var
  FileList: TStringList;
  InputList: TStringList;
  I: Integer;
  XMLFile, Filename: String;
begin
  if ord(Step)>=ord(frsFilesGathered) then
    raise Exception.Create('TFPDocRun.FindSourceFiles already called');
  if ord(Step)<ord(frsVarsInitialized) then
    InitVars;

  if Verbosity>0 then
    writeln('PasSrcDir="',PasSrcDir,'"');
  FileList := TStringList.Create;
  InputList := TStringList.Create;
  AddFilesToList(PasSrcDir, FileList);

  FileList.Sort;
  for I := 0 to FileList.Count-1 do
  begin
    XMLFile := AppendPathDelim(XMLSrcDir)+ExtractFileNameOnly(FileList[I])+'.xml';
    if FileExistsUTF8(XMLFile) then
    begin
      InputList.Add(CreateRelativePath(FileList[I],OutDir) + ParseParams);
      Params.Add('--descr='+CreateRelativePath(XMLFile,OutDir));
    end
    else
    begin
      if WarningsCount >= 0 then
        WriteLn('Warning! No corresponding xml file for unit ' + FileList[I])
      else
        Dec(WarningsCount);
    end;
  end;
  FileList.Free;

  Filename:=InputFile;
  if not FilenameIsAbsolute(Filename) then
    Filename:=TrimFilename(AppendPathDelim(OutDir)+Filename);
  if ExtraOptions<>'' then
     for i:=0 to InputList.count-1 do
       InputList[i]:=ExtraOptions+' '+InputList[i];
  InputList.SaveToFile(Filename);
  InputList.Free;

  FStep:=frsFilesGathered;
end;

procedure TFPDocRun.CreateOutputDir;
var
  TargetCSSFile: String;
begin
  if ord(Step)>=ord(frsOutDirCreated) then
    raise Exception.Create('TFPDocRun.CreateOutputDir already called');

  if Not DirectoryExistsUTF8(OutDir) then
  begin
    writeln('Creating directory "',OutDir,'"');
    if not CreateDirUTF8(OutDir) then
      raise Exception.Create('Unable to create directory "'+OutDir+'"');
  end;

  if ord(Step)<ord(frsFilesGathered) then
    FindSourceFiles;

  if (OutFormat='chm') and (CSSFile<>'') then
  begin
    TargetCSSFile:=AppendPathDelim(OutDir)+ExtractFileName(CSSFile);
    if CompareFilenames(TargetCSSFile,CSSFile)<>0 then
    begin
      if not CopyFile(CSSFile,TargetCSSFile) then
        raise Exception.Create('Unable to copy css file: CSSfile="'+CSSFile+'" to "'+TargetCSSFile+'"');
    end;
  end;

  FStep:=frsOutDirCreated;
end;

procedure TFPDocRun.RunFPDoc;
var
  Process: TProcess;
  CmdLine: String;
begin
  if ord(Step)>=ord(frsFPDocExecuted) then
    raise Exception.Create('TFPDocRun.Run already called');
  if ord(Step)<ord(frsOutDirCreated) then
    CreateOutputDir;

  if ShowCmd then
  begin
    Writeln('WorkDirectory:',OutDir);
    WriteLn('Exe:',FPDocExe);
    WriteLn(Params.Text);
    exit;
  end;
  {$IFDEF MSWINDOWS}FPDocExe := ChangeFileExt(FPDocExe,'.exe');{$ENDIF}
  if not FileInEnvPATH(FPDocExe) then
  begin
    WriteLn('Error: fpdoc ('+FPDocExe+') cannot be found. Please add its location to the PATH ',
            'or set it with --fpdoc path',PathDelim,'to',PathDelim,'fpdoc'{$IFDEF MSWINDOWS},'.exe'{$ENDIF});
    Halt(1);
  end;
  Process := TProcessUTF8.Create(nil);
  try
    Process.Options := Process.Options + [poWaitOnExit];
    Process.CurrentDirectory := OutDir;
    Process.Executable:=FPDocExe;
    Process.Parameters.Assign(Params);
    CmdLine:=Process.Executable+' '+MergeCmdLineParams(Params);
    if Verbosity>0 then
      writeln('CmdLine: ',CmdLine);
    try
      Process.Execute;
      if Process.ExitCode<>0 then
        raise Exception.Create('fpdoc failed with code '+IntToStr(Process.ExitCode));
    except
      if WarningsCount >= 0 then
      begin
        WriteLn('Error running fpdoc, command line: '+CmdLine)
      end
      else
        Dec(WarningsCount);
    end;
    if WarningsCount < -1 then
      WriteLn(abs(WarningsCount+1), ' Warnings hidden. Use --warnings to see them all.');
    if not FileExistsUTF8(XCTFile) then
      raise Exception.Create('File not found: '+XCTFile);
  finally
    Process.Free;
  end;

  FStep:=frsFPDocExecuted;
end;

procedure TFPDocRun.CopyToXCTDir;
var
  TargetXCTFile, SrcCHMFile, TargetCHMFile: String;
begin
  if ord(Step)>=ord(frsCopiedToXCTDir) then
    raise Exception.Create('TFPDocRun.CopyToXCTDir already called');
  if ord(Step)<ord(frsFPDocExecuted) then
    RunFPDoc;

  if (foCopyToXCTDir in Options)
  and (CompareFilenames(ChompPathDelim(OutDir),ChompPathDelim(XCTDir))<>0) then
  begin
    TargetXCTFile:=AppendPathDelim(XCTDir)+ExtractFileName(XCTFile);
    if ShowCmd then
      writeln('cp ',XCTFile,' ',TargetXCTFile)
    else if not CopyFile(XCTFile,TargetXCTFile) then
      raise Exception.Create('Unable to copy xct file: "'+XCTFile+'" to "'+TargetXCTFile+'"');
    writeln('Created ',TargetXCTFile);
    if OutFormat='chm' then
    begin
      SrcCHMFile:=AppendPathDelim(OutDir)+PackageName+'.chm';
      TargetCHMFile:=AppendPathDelim(XCTDir)+PackageName+'.chm';
      if ShowCmd then
        writeln('cp ',SrcCHMFile,' ',TargetCHMFile)
      else if not CopyFile(SrcCHMFile,TargetCHMFile) then
        raise Exception.Create('Unable to copy chm file: "'+SrcCHMFile+'" to "'+TargetCHMFile+'"');
      writeln('Created ',TargetCHMFile);
    end;
  end;

  FStep:=frsCopiedToXCTDir;
end;

procedure TFPDocRun.Execute;
begin
  writeln('===================================================================');
  if ord(Step)>=ord(frsComplete) then
    raise Exception.Create('TFPDocRun.Execute already called');
  if ord(Step)<ord(frsCopiedToXCTDir) then
    CopyToXCTDir;

  FStep:=frsComplete;
end;

var
  Run: TFPDocRun;
begin
  ReadOptions;

  {
    LazUtils was never built with external links to LCL (See Also and source
    declarations) because lcl.xct could not be imported. The file does not exist
    when LazUtils is built.

    To solve this problem, the output format for LazUtils is built twice. It is the
    smaller of the two packages. Building LazUtils twice ensures that the
    "chicken or the egg" problem with inter-file links is avoided.

    Build LazUtils WITHOUT any external links (faster).
    Build LCL with links to RTL, FCL, LazUtils.
    Build LazUtils with links to RTL, FCL, LCL.
  }
  // build lazutils WITHOUT any external links
  Run:=TFPDocRun.Create('lazutils');
  Run.ExtraOptions:='-MObjFPC -Scghi -dUseSystemUITypes'; // extra options from in lazutils makefile.
  Run.UsedPkgs.Add('rtl');
  Run.UsedPkgs.Add('fcl');
  Run.XMLSrcDir := '..'+PathDelim+'xml'+PathDelim+'lazutils';
  Run.PasSrcDir := '..'+PathDelim+'..'+PathDelim+'components'+PathDelim+'lazutils';
  Run.Execute;
  Run.Free;

  // build lcl with links to rtl, fcl, lazutils
  Run:=TFPDocRun.Create('lcl');
  Run.ExtraOptions:='-MObjFPC -Sic -dUseSystemUITypes'; // extra options from in LCL makefile.
  Run.UsedPkgs.Add('rtl');
  Run.UsedPkgs.Add('fcl');
  Run.UsedPkgs.Add('lazutils');
  Run.XMLSrcDir := '..'+PathDelim+'xml'+PathDelim+'lcl'+PathDelim;
  Run.PasSrcDir := '..'+PathDelim+'..'+PathDelim+'lcl'+PathDelim;
  Run.IncludePath := Run.PasSrcDir+PathDelim+'include';
  Run.Execute;
  Run.Free;

  // build lazutils with links to rtl, fcl, lcl
  Run:=TFPDocRun.Create('lazutils');
  Run.ExtraOptions:='-MObjFPC -Scghi -dUseSystemUITypes'; // extra options from in lazutils makefile.
  Run.UsedPkgs.Add('rtl');
  Run.UsedPkgs.Add('fcl');
  Run.UsedPkgs.Add('lcl');
  Run.XMLSrcDir := '..'+PathDelim+'xml'+PathDelim+'lazutils';
  Run.PasSrcDir := '..'+PathDelim+'..'+PathDelim+'components'+PathDelim+'lazutils';
  Run.Execute;
  Run.Free;

  if ShowCmd then
    writeln('Not executed... simulation ended');
end.
