freepascal.compiler/compiler/t_go32v1.pas

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

    This unit implements support import,export,link routines
    for the (i386) go32v1 target

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    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.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 ****************************************************************************
}
unit t_go32v1;

  interface
  uses
    link;

  type
    plinkergo32v1=^tlinkergo32v1;
    tlinkergo32v1=object(tlinker)
    private
       Function  WriteResponseFile(isdll:boolean) : Boolean;
    public
       constructor Init;
       procedure SetDefaultInfo;virtual;
       function  MakeExecutable:boolean;virtual;
    end;


  implementation

    uses
       globtype,globals,cobjects,systems,verbose,script,files;


{****************************************************************************
                               TLinkergo32v1
****************************************************************************}

Constructor TLinkergo32v1.Init;
begin
  Inherited Init;
  { allow duplicated libs (PM) }
  SharedLibFiles.doubles:=true;
  StaticLibFiles.doubles:=true;
end;


procedure TLinkergo32v1.SetDefaultInfo;
begin
  with Info do
   begin
     ExeCmd[1]:='ld -oformat coff-go32 $OPT $STRIP -o $EXE @$RES';
     ExeCmd[2]:='aout2exe $EXE';
   end;
end;


Function TLinkergo32v1.WriteResponseFile(isdll:boolean) : Boolean;
Var
  linkres  : TLinkRes;
  i        : longint;
  s,s2     : string;
  linklibc : boolean;
begin
  WriteResponseFile:=False;

  { Open link.res file }
  LinkRes.Init(Info.ResName);

  { Write path to search libraries }
  if assigned(current_module^.locallibrarysearchpath) then
   begin
     S:=current_module^.locallibrarysearchpath^;
     while s<>'' do
      begin
        s2:=GetPathFromList(s);
        LinkRes.Add('-L'+s2);
      end;
   end;
  S:=LibrarySearchPath;
  while s<>'' do
   begin
     s2:=GetPathFromList(s);
     LinkRes.Add('-L'+s2);
   end;

  { add objectfiles, start with prt0 always }
  LinkRes.AddFileName(FindObjectFile('prt0'));
  while not ObjectFiles.Empty do
   begin
     s:=ObjectFiles.Get;
     if s<>'' then
      LinkRes.AddFileName(s);
   end;

  { Write sharedlibraries like -l<lib>, also add the needed dynamic linker
    here to be sure that it gets linked this is needed for glibc2 systems (PFV) }
  linklibc:=false;
  While not SharedLibFiles.Empty do
   begin
     S:=SharedLibFiles.Get;
     if s<>'c' then
      begin
        i:=Pos(target_os.sharedlibext,S);
        if i>0 then
         Delete(S,i,255);
        LinkRes.Add('-l'+s);
      end
     else
      begin
        LinkRes.Add('-l'+s);
        linklibc:=true;
      end;
   end;
  { be sure that libc&libgcc is the last lib }
  if linklibc then
   begin
     LinkRes.Add('-lc');
     LinkRes.Add('-lgcc');
   end;

  { Write staticlibraries }
  if not StaticLibFiles.Empty then
   begin
     LinkRes.Add('-(');
     While not StaticLibFiles.Empty do
      begin
        S:=StaticLibFiles.Get;
        LinkRes.AddFileName(s)
      end;
     LinkRes.Add('-)');
   end;

{ Write and Close response }
  linkres.writetodisk;
  linkres.done;

  WriteResponseFile:=True;
end;


function TLinkergo32v1.MakeExecutable:boolean;
var
  binstr,
  cmdstr  : string;
  success : boolean;
  StripStr : string[40];
begin
  if not(cs_link_extern in aktglobalswitches) then
   Message1(exec_i_linking,current_module^.exefilename^);

{ Create some replacements }
  StripStr:='';
  if (cs_link_strip in aktglobalswitches) then
   StripStr:='-s';

{ Write used files and libraries }
  WriteResponseFile(false);

{ Call linker }
  SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
  Replace(cmdstr,'$EXE',current_module^.exefilename^);
  Replace(cmdstr,'$OPT',Info.ExtraOptions);
  Replace(cmdstr,'$RES',current_module^.outpath^+Info.ResName);
  Replace(cmdstr,'$STRIP',StripStr);
  success:=DoExec(FindUtil(BinStr),cmdstr,true,false);

{ Remove ReponseFile }
  if (success) and not(cs_link_extern in aktglobalswitches) then
   RemoveFile(current_module^.outpath^+Info.ResName);

  MakeExecutable:=success;   { otherwise a recursive call to link method }
end;

end.
{
  $Log$
  Revision 1.2  1999-10-22 14:42:40  peter
    * reset linklibc

  Revision 1.1  1999/10/21 14:29:38  peter
    * redesigned linker object
    + library support for linux (only procedures can be exported)

}