{
    $Id$
    Copyright (c) 1999 by Peter Vreman

    Convert Makefile.fpc to Makefile

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
{$ifdef fpc}{$mode objfpc}{$endif}
{$H+}
program fpcmake;
uses
{$ifdef go32v2}
  dpmiexcp,
{$endif}
  dos,
  sysutils,classes,inifiles;

const
  Version='v0.99.13';
  Title='fpcmake '+Version;

{ Include default fpcmake.ini }
{$i fpcmake.inc}

type
  tsections=(sec_none,
    sec_units,sec_exes,sec_loaders,sec_examples,
    sec_compile,sec_depend,sec_install,sec_zipinstall,
    sec_clean,sec_libs,sec_command,sec_exts,sec_dirs,sec_tools,sec_info
  );

const
  EnvVar='FPCMAKEINI'; { should be FPCMAKE in the future }
  TimeFormat='yyyy/mm/dd hh:nn';

  sectionstr : array[tsections] of string=('none',
    'units','exes','loaders','examples',
    'compile','depend','install','zipinstall',
    'clean','libs','command','exts','dirs','tools','info'
  );

  sectiondef : array[tsections] of boolean=(false,
    true,true,false,false,
    true,false,true,true,
    true,true,true,true,true,true,true
  );

  targets=4;
  targetstr : array[1..targets] of string=(
    'linux','go32v2','win32','os2'
  );

  rules=14;
  rulestr : array[1..rules] of string=(
    'all','debug',
    'examples','test',
    'smart','shared',
    'showinstall','install','zipinstall','zipinstalladd',
    'clean','cleanall',
    'depend','info'
  );

  rule2sec : array[1..rules] of tsections=(
    sec_compile,sec_compile,
    sec_examples,sec_examples,
    sec_libs,sec_libs,
    sec_install,sec_install,sec_zipinstall,sec_zipinstall,
    sec_clean,sec_clean,
    sec_depend,sec_info
  );

{ Sections in Makefile.fpc }
  ini_sections='sections';
  ini_install='install';
  ini_clean='clean';
  ini_dirs='dirs';
  ini_packages='packages';
  ini_libs='libs';
  ini_targets='targets';
  ini_info='info';
  ini_defaults='defaults';
  ini_tools='tools';

type
  TTargetsString=array[0..targets] of string;
  TFpcMake=record
    TargetDirs,
    TargetLoaders,
    TargetUnits,
    TargetPrograms,
    TargetExamples,
    InstallUnits,
    InstallFiles,
    CleanUnits,
    CleanFiles     : TTargetsString;
    DefaultRule,
    DefaultTarget,
    DefaultCPU,
    DefaultOptions : string;
    DirFpc,
    DirPackage,
    DirUnit,
    DirLib,
    DirObj,
    DirTarget,
    DirUnitTarget,
    DirSources,
    DirInc         : string;
    PackageFCL     : boolean;
    Packages       : string;
    LibName,
    LibUnits       : string;
    LibGCC,
    LibOther       : boolean;
    InfoCfg,
    InfoDirs,
    InfoTools,
    InfoInstall,
    InfoObjects    : boolean;
    Section        : array[tsections] of boolean;
    ToolsPPDep,
    ToolsPPUMove,
    ToolsPPUFiles,
    ToolsData2Inc,
    ToolsSed,
    ToolsDiff,
    ToolsCmp,
    ToolsUpx,
    ToolsDate,
    ToolsZip       : boolean;
    PreSettings,
    PostSettings,
    Rules          : TStringList;
  end;

  TMyMemoryStream=class(TMemoryStream)
  public
    constructor Create(p:pointer;mysize:integer);
  end;

var
  userini : TFpcMake;
  fpcini  : TIniFile;
  IniStream : TMyMemoryStream;


{*****************************************************************************
                                     Helpers
*****************************************************************************}

procedure Verbose(s:string);
begin
  writeln(s);
end;


procedure Error(s:string);
begin
  Writeln(s);
  Halt(1);
end;


function TargetStringEmpty(const t:TTargetsString):boolean;
var
  i : integer;
begin
  for i:=0 to targets do
   if t[i]<>'' then
    begin
      TargetStringEmpty:=false;
      exit;
    end;
  TargetStringEmpty:=true;
end;


{*****************************************************************************
                                  TMyMemoryStream
*****************************************************************************}

constructor TMyMemoryStream.Create(p:pointer;mysize:integer);
begin
  inherited Create;
  SetPointer(p,mysize);
end;


{*****************************************************************************
                               Makefile.fpc reading
*****************************************************************************}

function ReadMakefilefpc:boolean;
var
  fn  : string;
  ini : TIniFile;

  procedure ReadTargetsString(var t:Ttargetsstring;const sec,name,def:string);
  var
    i : integer;
  begin
    t[0]:=ini.ReadString(sec,name,def);
    for i:=1 to targets do
     t[i]:=ini.ReadString(sec,name+'_'+targetstr[i],'');
  end;

var
  sec : tsections;
begin
  ReadMakefilefpc:=false;
  if FileExists('Makefile.fpc') then
   fn:='Makefile.fpc'
  else
   if FileExists('makefile.fpc') then
    fn:='makefile.fpc'
  else
   exit;

  Verbose('Reading '+fn);
  ini:=TIniFile.Create(fn);

  with userini,ini do
   begin
   { targets }
     ReadTargetsString(TargetDirs,ini_targets,'dirs','');
     ReadTargetsString(TargetLoaders,ini_targets,'loaders','');
     ReadTargetsString(TargetUnits,ini_targets,'units','');
     ReadTargetsString(TargetPrograms,ini_targets,'programs','');
     ReadTargetsString(TargetExamples,ini_targets,'examples','');
   { clean }
     ReadTargetsString(CleanUnits,ini_clean,'units','');
     ReadTargetsString(CleanFiles,ini_clean,'files','');
   { install }
     ReadTargetsString(InstallUnits,ini_install,'units','');
     ReadTargetsString(InstallFiles,ini_install,'files','');
   { defaults }
     DefaultRule:=ReadString(ini_defaults,'defaultrule','all');
     DefaultTarget:=ReadString(ini_defaults,'defaulttarget','');
     DefaultCPU:=ReadString(ini_defaults,'defaultcpu','');
     DefaultOptions:=ReadString(ini_defaults,'defaultoptions','');
   { packages }
     Packages:=Readstring(ini_packages,'packages','');
     PackageFCL:=ReadBool(ini_packages,'fcl',false);
   { dirs }
     DirFpc:=ReadString(ini_dirs,'fpcdir','');
     DirPackage:=ReadString(ini_dirs,'packagedir','$(FPCDIR)/packages');
     DirUnit:=ReadString(ini_dirs,'unitdir','');
     DirLib:=ReadString(ini_dirs,'libdir','');
     DirObj:=ReadString(ini_dirs,'objdir','');
     DirTarget:=ReadString(ini_dirs,'targetdir','');
     DirSources:=ReadString(ini_dirs,'sourcesdir','');
     DirUnitTarget:=ReadString(ini_dirs,'unittargetdir','');
     DirInc:=ReadString(ini_dirs,'incdir','');
   { libs }
     LibName:=ReadString(ini_libs,'libname','');
     LibUnits:=ReadString(ini_libs,'libunits','');
     LibGcc:=ReadBool(ini_libs,'libgcc',false);
     LibOther:=ReadBool(ini_libs,'libother',false);
   { tools }
     ToolsPPDep:=ReadBool(ini_tools,'toolppdep',true);
     ToolsPPUMove:=ReadBool(ini_tools,'toolppumove',true);
     ToolsPPUFiles:=ReadBool(ini_tools,'toolppufiles',true);
     ToolsSed:=ReadBool(ini_tools,'toolsed',false);
     ToolsData2Inc:=ReadBool(ini_tools,'tooldata2inc',false);
     ToolsDiff:=ReadBool(ini_tools,'tooldiff',false);
     ToolsCmp:=ReadBool(ini_tools,'toolcmp',false);
     ToolsUpx:=ReadBool(ini_tools,'toolupx',true);
     ToolsDate:=ReadBool(ini_tools,'tooldate',true);
     ToolsZip:=ReadBool(ini_tools,'toolzip',true);
   { sections, but allow overriding the 'none' option to include a few sects only }
     for sec:=low(tsections) to high(tsections) do
      Section[sec]:=sectiondef[sec];
     Section[sec_None]:=ReadBool(ini_sections,sectionstr[sec_none],sectiondef[sec_none]);
     if Section[sec_None] then
      FillChar(Section,sizeof(Section),0);
     for sec:=low(tsections) to high(tsections) do
      Section[sec]:=ReadBool(ini_sections,sectionstr[sec],section[sec]);
     { turn on needed sections }
     if not TargetStringEmpty(TargetLoaders) then
      userini.section[sec_loaders]:=true;
     if not TargetStringEmpty(TargetUnits) then
      userini.section[sec_units]:=true;
     if not TargetStringEmpty(TargetPrograms) then
      userini.section[sec_exes]:=true;
     if not TargetStringEmpty(TargetExamples) then
      userini.section[sec_examples]:=true;
   { info }
     InfoCfg:=ReadBool(ini_info,'infoconfig',true);
     InfoDirs:=ReadBool(ini_info,'infodirs',false);
     InfoTools:=ReadBool(ini_info,'infotools',false);
     InfoInstall:=ReadBool(ini_info,'infoinstall',true);
     InfoObjects:=ReadBool(ini_info,'infoobjects',true);
   { rules }
     PreSettings:=TStringList.Create;
     ReadSectionRaw('presettings',PreSettings);
   { rules }
     PostSettings:=TStringList.Create;
     ReadSectionRaw('postsettings',PostSettings);
   { rules }
     rules:=TStringList.Create;
     ReadSectionRaw('rules',rules);
   end;

  ini.Destroy;
  ReadMakefilefpc:=true;
end;


{*****************************************************************************
                               userini.ini loading
*****************************************************************************}

function ReadFpcMakeIni:TIniFile;
var
  fn : string;
begin
  ReadFpcMakeIni:=nil;
  if FileExists('fpcmake.ini') then
   fn:='fpcmake.ini'
  else
   if (FileExists(GetEnv(envvar))) then
    fn:=GetEnv(envvar)
  else
{$ifdef linux}
   if FileExists('/usr/lib/fpc/fpcmake.ini') then
    fn:='/usr/lib/fpc/fpcmake.ini'
{$else}
   if FileExists(ChangeFileExt(paramstr(0),'.ini')) then
    fn:=ChangeFileExt(paramstr(0),'.ini')
{$endif}
  else
   fn:='';
  if fn='' then
   begin
     Verbose('Opening internal ini');
     IniStream:=TMyMemoryStream.Create(@fpcmakeini,sizeof(fpcmakeini));
     result:=TIniFile.Create(IniStream);
   end
  else
   begin
     Verbose('Opening '+fn);
     result:=TIniFile.Create(fn);
   end;
end;


{*****************************************************************************
                               Makefile writing
*****************************************************************************}

function WriteMakefile:boolean;
var
  mf : TStringList;
  ss : TStringList;

  procedure FixTab(sl:TStringList);
  var
    i,j,k : integer;
    s,s2  : string;
  begin
    i:=0;
    while (i<sl.Count) do
     begin
       if (sl[i]<>'') and (sl[i][1] in [' ',#9]) then
        begin
          s:=sl[i];
          k:=0;
          j:=0;
          repeat
            inc(j);
            case s[j] of
              ' ' :
                inc(k);
              #9 :
                k:=(k+7) and not(7);
              else
                break;
            end;
          until (j=length(s));
          if k>7 then
           begin
             s2:='';
             Delete(s,1,j-1);
             while (k>7) do
              begin
                s2:=s2+#9;
                dec(k,8);
              end;
             while (k>0) do
              begin
                s2:=s2+' ';
                dec(k);
              end;
             sl[i]:=s2+s;
           end;
        end;
       inc(i);
     end;
  end;

  procedure AddHead(const s:string);
  begin
    mf.Add('');
    mf.Add('# '+s);
    mf.Add('');
  end;

  procedure AddSection(b:boolean;s:string);
  begin
    if b then
     begin
       ss.Clear;
       fpcini.ReadSectionRaw(s,ss);
       mf.AddStrings(ss);
       mf.Add('');
     end;
  end;

  procedure AddRule(rule:integer);
  var
    i : integer;
    hs : string;
  begin
    i:=0;
    while (i<userini.rules.Count) do
     begin
       if (length(userini.rules[i])>length(rulestr[rule])) and
          (userini.rules[i][1]=rulestr[rule][1]) and
	  ((userini.rules[i][length(rulestr[rule])+1]=':') or
	   ((length(userini.rules[i])>length(rulestr[rule])+1) and
	    (userini.rules[i][length(rulestr[rule])+2]=':'))) and
          (Copy(userini.rules[i],1,length(rulestr[rule]))=rulestr[rule]) then
         exit;
       inc(i);
     end;
    hs:='';
    if userini.section[rule2sec[rule]] then
     hs:=hs+' fpc_'+rulestr[rule];
    if not TargetStringEmpty(userini.targetdirs) then
     hs:=hs+' $(addsuffix _'+rulestr[rule]+',$(DIROBJECTS))';
    if hs<>'' then
     begin
       mf.Add(rulestr[rule]+':'+hs);
       mf.Add('');
     end;
  end;

  procedure AddTargets(const pre:string;var t:TTargetsString;wildcard:boolean);
  var
    i : integer;
  begin
    for i:=0 to targets do
     if (t[i]<>'') then
      begin
        if i<>0 then
         mf.Add('ifeq ($(OS_TARGET),'+targetstr[i]+')');
        if t[i]<>'' then
         begin
           if wildcard then
            mf.Add(pre+'+=$(wildcard '+t[i]+')')
           else
            mf.Add(pre+'+='+t[i]);
         end;
        if i<>0 then
         mf.Add('endif');
      end;
  end;

  procedure AddTargetDir(const s:string);
  var
    j : integer;
  begin
    AddHead('Dir '+s);
    for j:=1to rules do
     begin
       mf.Add(s+'_'+rulestr[j]+':');
       mf.Add(#9+'$(MAKE) -C '+s+' '+rulestr[j]);
       mf.Add('');
     end;
  end;

var
  hs : string;
  i,j : integer;
begin
{ Open the Makefile }
  Verbose('Creating Makefile');
  mf:=TStringList.Create;
{ Buffer for reading and writing the sections }
  ss:=TStringList.Create;

  with mf do
   begin
   { write header & autodetection }
     Add('#');
     Add('# Makefile generated by '+title+' on '+FormatDateTime(TimeFormat,Now));
     Add('#');
     Add('');
     Add('defaultrule: '+userini.defaultrule);
     Add('');
     AddSection(true,'osdetect');

   { set the forced target os/cpu }
     if (userini.defaulttarget<>'') or (userini.defaultcpu<>'') then
      begin
        AddSection(true,'defaulttarget');
        if userini.defaulttarget<>'' then
         Add('override OS_TARGET:='+userini.defaulttarget);
        if userini.defaultcpu<>'' then
         Add('override CPU_TARGET:='+userini.defaultcpu);
        Add('');
      end;

   { fpc detection }
     AddSection(true,'fpcdetect');

   { write the default & user settings }
     AddSection(true,'defaultsettings');
     AddSection(true,'usersettings');

   { Pre Settings }
     if userini.PreSettings.count>0 then
      begin
        AddHead('Pre Settings');
        AddStrings(userini.PreSettings);
      end;

   { Targets }
     AddHead('Targets');
     AddTargets('DIROBJECTS',userini.targetdirs,true);
     AddTargets('LOADEROBJECTS',userini.targetloaders,false);
     AddTargets('UNITOBJECTS',userini.targetunits,false);
     AddTargets('EXEOBJECTS',userini.targetprograms,false);
     AddTargets('EXAMPLEOBJECTS',userini.targetexamples,false);

   { Clean }
     AddHead('Clean');
     AddTargets('EXTRACLEANUNITS',userini.cleanunits,false);
     AddTargets('EXTRACLEANFILES',userini.cleanfiles,false);

   { Install }
     AddHead('Install');
     AddTargets('EXTRAINSTALLUNITS',userini.installunits,false);
     AddTargets('EXTRAINSTALLFILES',userini.installfiles,false);

   { Defaults }
     AddHead('Defaults');
     if userini.defaultoptions<>'' then
      Add('override NEEDOPT='+userini.defaultoptions);

   { Dirs }
     AddHead('Directories');
     if userini.dirsources<>'' then
      Add('vpath %$(PASEXT) '+userini.dirsources);
     if userini.dirfpc<>'' then
      begin
        { this dir can be set in the environment, it's more a default }
        Add('ifndef FPCDIR');
        Add('FPCDIR='+userini.dirfpc);
        Add('endif');
      end;
     if userini.dirpackage<>'' then
      begin
        { this dir can be set in the environment, it's more a default }
        Add('ifndef PACKAGEDIR');
        Add('PACKAGEDIR='+userini.dirpackage);
        Add('endif');
      end;
     if userini.dirunit<>'' then
      Add('override NEEDUNITDIR='+userini.dirunit);
     if userini.dirlib<>'' then
      Add('override NEEDLIBDIR='+userini.dirlib);
     if userini.dirobj<>'' then
      Add('override NEEDOBJDIR='+userini.dirobj);
     if userini.dirinc<>'' then
      Add('override NEEDINCDIR='+userini.dirinc);
     if userini.dirtarget<>'' then
      begin
        Add('ifndef TARGETDIR');
        Add('TARGETDIR='+userini.dirtarget);
        Add('endif');
      end;
     if userini.dirunittarget<>'' then
      begin
        Add('ifndef UNITTARGETDIR');
        Add('UNITTARGETDIR='+userini.dirunittarget);
        Add('endif');
      end;

   { Packages }
     AddHead('Packages');
     if userini.Packages<>'' then
      Add('PACKAGES='+userini.Packages);
     if userini.PackageFCL then
      Add('override NEEDUNITDIR+=$(FPCDIR)/fcl/$(OS_TARGET)');
     if userini.Packages<>'' then
      Add('override NEEDUNITDIR+=$(addprefix $(PACKAGEDIR)/,$(PACKAGES))');

   { Libs }
     AddHead('Libraries');
     if userini.libname<>'' then
      Add('LIBNAME='+userini.libname);
     if userini.libunits<>'' then
      Add('SHAREDLIBOBJECTUNITS='+userini.libunits);
     if userini.libgcc then
      Add('override NEEDGCCLIB=1');
     if userini.libother then
      Add('override NEEDOTHERLIB=1');

   { Info }
     if userini.Section[sec_Info] then
      begin
        AddHead('Info');
        hs:='';
        if userini.infocfg then
         hs:=hs+'fpc_infocfg ';
        if userini.infodirs then
         hs:=hs+'fpc_infodirs ';
        if userini.infotools then
         hs:=hs+'fpc_infotools ';
        if userini.infoobjects then
         hs:=hs+'fpc_infoobjects ';
        if userini.infoinstall then
         hs:=hs+'fpc_infoinstall ';
        Add('FPCINFO='+hs);
      end;

   { Post Settings }
     if userini.PostSettings.count>0 then
      begin
        AddHead('Post Settings');
        AddStrings(userini.PostSettings);
      end;

     Add('');

   { write dirs }
     if userini.section[sec_dirs] then
      begin
        AddSection(true,'dir_default');
        AddSection(userini.libgcc,'dir_gcclib');
        AddSection(userini.libother,'dir_otherlib');
        AddSection(true,'dir_install');
      end;

   { commandline }
     if userini.section[sec_command] then
      begin
        Add('');
        AddSection(true,'command_begin');
        AddSection((userini.defaultoptions<>''),'command_needopt');
        AddSection((userini.dirfpc<>''),'command_fpcdir');
        AddSection((userini.dirunit<>'') or (userini.packages<>'') or (userini.packagefcl),'command_needunit');
        AddSection((userini.dirlib<>''),'command_needlib');
        AddSection((userini.dirobj<>''),'command_needobj');
        AddSection((userini.dirinc<>''),'command_needinc');
        AddSection(userini.libgcc,'command_gcclib');
        AddSection(userini.libother,'command_otherlib');
        AddSection((userini.dirinc<>''),'command_inc');
        AddSection((userini.dirtarget<>''),'command_target');
        AddSection((userini.dirunittarget<>''),'command_unittarget');
        AddSection(true,'command_end');
      end;

   { write tools }
     if userini.section[sec_tools] then
      begin
        AddSection(true,'shelltools');
        AddSection(true,'tool_default');
        AddSection(userini.toolsppdep,'tool_ppdep');
        AddSection(userini.toolsppumove,'tool_ppumove');
        AddSection(userini.toolsppufiles,'tool_ppufiles');
        AddSection(userini.toolsdata2inc,'tool_data2inc');
        AddSection(userini.toolsupx,'tool_upx');
        AddSection(userini.toolssed,'tool_sed');
        AddSection(userini.toolsdate,'tool_date');
        AddSection(userini.toolszip,'tool_zip');
        AddSection(userini.toolscmp,'tool_cmp');
        AddSection(userini.toolsdiff,'tool_diff');
      end;

   { extensions }
     if userini.section[sec_exts] then
      AddSection(true,'extensions');

   { add default rules }
     AddSection(true,'defaultrules');
     for i:=1 to rules do
      AddRule(i);

   { compile rules for making units/loaders/exes/examples }
     AddSection(not TargetStringEmpty(userini.targetunits),'unitrules');
     AddSection(not TargetStringEmpty(userini.targetprograms),'exerules');
     AddSection(not TargetStringEmpty(userini.targetloaders),'loaderrules');
     AddSection(not TargetStringEmpty(userini.targetexamples),'examplerules');
   { default fpc_ rules }
     AddSection(userini.Section[sec_Compile],'compilerules');
     AddSection(userini.Section[sec_Libs],'libraryrules');
     AddSection(userini.Section[sec_Install],'installrules');
     AddSection(userini.Section[sec_ZipInstall],'zipinstallrules');
     AddSection(userini.Section[sec_Clean],'cleanrules');
     AddSection(userini.Section[sec_Depend],'dependrules');
     if userini.Section[sec_Info] then
      begin
        AddSection(true,'inforules');
        AddSection(userini.infocfg,'info_cfg');
        AddSection(userini.infodirs,'info_dirs');
        AddSection(userini.infotools,'info_tools');
        AddSection(userini.infoobjects,'info_objects');
        AddSection(userini.infoinstall,'info_install');
      end;

   { Target dirs }
     if not TargetStringEmpty(userini.targetdirs) then
      begin
        for j:=0 to targets do
         if (userini.targetdirs[j]<>'') then
          begin
            if j<>0 then
             mf.Add('ifeq ($(OS_TARGET),'+targetstr[j]+')');
            hs:=userini.targetdirs[j];
            repeat
              i:=pos(' ',hs);
              if i=0 then
               i:=length(hs)+1;
              AddTargetDir(Copy(hs,1,i-1));
              system.delete(hs,1,i);
            until hs='';
            if j<>0 then
             mf.Add('endif');
          end;
      end;

   { insert users rules }
     if userini.rules.count>0 then
      begin
        AddSection(true,'userrules');
        AddStrings(userini.rules);
      end;
   end;

{ Write the Makefile and cleanup }
  Verbose('Writing Makefile');
  FixTab(mf);
  mf.SaveToFile('Makefile');
  mf.Destroy;
  ss.Destroy;
  WriteMakefile:=true;
end;


begin
{ Open userini.ini }
  fpcini:=ReadFpcMakeIni;
  if not assigned(fpcini) then
   Error('Can''t read fpcmake.ini');

{ Open Makefile.fpc }
  if not ReadMakefilefpc then
   Error('Can''t read Makefile.fpc');

{ Write Makefile }
  if not WriteMakefile then
   Error('Can''t write Makefile');

  fpcini.destroy;
end.
{
  $Log$
  Revision 1.8  1999-11-24 23:53:00  peter
    * packages
    * lot of other changes

  Revision 1.7  1999/11/23 09:43:35  peter
    + internal .ini file
    + packages support
    * ppufiles,data2inc support

  Revision 1.6  1999/11/10 22:10:49  peter
    * fpcmake updated

  Revision 1.5  1999/11/09 14:38:32  peter
    * sections section to leave out whole info/tools

  Revision 1.4  1999/11/08 15:01:39  peter
    * fpcmake support

  Revision 1.3  1999/11/04 12:07:13  michael
  + Now envvar is used

  Revision 1.2  1999/11/03 23:39:53  peter
    * lot of updates

  Revision 1.1  1999/11/02 23:57:40  peter
    * initial version

}