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https://gitlab.com/freepascal.org/fpc/source.git
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980 lines
32 KiB
ObjectPascal
980 lines
32 KiB
ObjectPascal
{
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Copyright (c) 1998-2002 by Peter Vreman
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This unit implements support import,export,link routines
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for the (i386) Linux target
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit t_linux;
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{$i fpcdefs.inc}
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interface
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uses
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symsym,symdef,ppu,
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import,export,link;
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type
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timportliblinux=class(timportlib)
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procedure generatelib;override;
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end;
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texportliblinux=class(texportlib)
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procedure preparelib(const s : string);override;
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procedure exportprocedure(hp : texported_item);override;
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procedure exportvar(hp : texported_item);override;
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procedure generatelib;override;
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end;
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tlinkerlinux=class(texternallinker)
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private
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libctype:(libc5,glibc2,glibc21,uclibc);
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cprtobj,
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gprtobj,
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prtobj : string[80];
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reorder : boolean;
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linklibc: boolean;
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Function WriteResponseFile(isdll:boolean) : Boolean;
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public
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constructor Create;override;
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procedure SetDefaultInfo;override;
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procedure InitSysInitUnitName;override;
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function MakeExecutable:boolean;override;
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function MakeSharedLibrary:boolean;override;
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function postprocessexecutable(const fn : string;isdll:boolean):boolean;
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procedure LoadPredefinedLibraryOrder; override;
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end;
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implementation
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uses
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SysUtils,
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cutils,cfileutl,cclasses,
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verbose,systems,globtype,globals,
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symconst,script,
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fmodule,
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aasmbase,aasmtai,aasmdata,aasmcpu,cpubase,
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cgbase,cgobj,cgutils,ogbase,ncgutil,
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comprsrc,
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i_linux
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;
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{*****************************************************************************
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TIMPORTLIBLINUX
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*****************************************************************************}
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procedure timportliblinux.generatelib;
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var
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i : longint;
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ImportLibrary : TImportLibrary;
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begin
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for i:=0 to current_module.ImportLibraryList.Count-1 do
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begin
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ImportLibrary:=TImportLibrary(current_module.ImportLibraryList[i]);
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current_module.linkothersharedlibs.add(ImportLibrary.Name,link_always);
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end;
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end;
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{*****************************************************************************
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TEXPORTLIBLINUX
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*****************************************************************************}
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procedure texportliblinux.preparelib(const s:string);
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begin
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end;
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procedure texportliblinux.exportprocedure(hp : texported_item);
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var
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hp2 : texported_item;
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begin
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{ first test the index value }
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if (hp.options and eo_index)<>0 then
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begin
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Message1(parser_e_no_export_with_index_for_target,'linux');
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exit;
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end;
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{ now place in correct order }
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hp2:=texported_item(current_module._exports.first);
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while assigned(hp2) and
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(hp.name^>hp2.name^) do
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hp2:=texported_item(hp2.next);
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{ insert hp there !! }
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if assigned(hp2) and (hp2.name^=hp.name^) then
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begin
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{ this is not allowed !! }
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Message1(parser_e_export_name_double,hp.name^);
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exit;
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end;
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if hp2=texported_item(current_module._exports.first) then
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current_module._exports.concat(hp)
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else if assigned(hp2) then
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begin
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hp.next:=hp2;
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hp.previous:=hp2.previous;
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if assigned(hp2.previous) then
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hp2.previous.next:=hp;
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hp2.previous:=hp;
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end
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else
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current_module._exports.concat(hp);
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end;
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procedure texportliblinux.exportvar(hp : texported_item);
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begin
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hp.is_var:=true;
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exportprocedure(hp);
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end;
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procedure texportliblinux.generatelib;
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var
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hp2 : texported_item;
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pd : tprocdef;
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{$ifdef x86}
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sym : tasmsymbol;
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r : treference;
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{$endif x86}
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begin
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new_section(current_asmdata.asmlists[al_procedures],sec_code,'',0);
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hp2:=texported_item(current_module._exports.first);
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while assigned(hp2) do
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begin
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if (not hp2.is_var) and
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(hp2.sym.typ=procsym) then
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begin
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{ the manglednames can already be the same when the procedure
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is declared with cdecl }
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pd:=tprocdef(tprocsym(hp2.sym).ProcdefList[0]);
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if not has_alias_name(pd,hp2.name^) then
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begin
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{ place jump in al_procedures }
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current_asmdata.asmlists[al_procedures].concat(tai_align.create(target_info.alignment.procalign));
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current_asmdata.asmlists[al_procedures].concat(Tai_symbol.Createname_global(hp2.name^,AT_FUNCTION,0));
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if (cs_create_pic in current_settings.moduleswitches) and
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{ other targets need to be checked how it works }
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(target_info.system in [system_x86_64_linux,system_i386_linux]) then
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begin
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{$ifdef x86}
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sym:=current_asmdata.RefAsmSymbol(pd.mangledname);
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reference_reset_symbol(r,sym,0);
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if cs_create_pic in current_settings.moduleswitches then
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r.refaddr:=addr_pic
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else
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r.refaddr:=addr_full;
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current_asmdata.asmlists[al_procedures].concat(taicpu.op_ref(A_JMP,S_NO,r));
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{$endif x86}
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end
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else
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cg.a_jmp_name(current_asmdata.asmlists[al_procedures],pd.mangledname);
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current_asmdata.asmlists[al_procedures].concat(Tai_symbol_end.Createname(hp2.name^));
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end;
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end
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else
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message1(parser_e_no_export_of_variables_for_target,'linux');
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hp2:=texported_item(hp2.next);
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end;
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end;
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{*****************************************************************************
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TLINKERLINUX
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*****************************************************************************}
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Constructor TLinkerLinux.Create;
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begin
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Inherited Create;
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if not Dontlinkstdlibpath Then
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{$ifdef x86_64}
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LibrarySearchPath.AddPath('/lib64;/usr/lib64;/usr/X11R6/lib64',true);
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{$else}
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{$ifdef powerpc64}
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LibrarySearchPath.AddPath('/lib64;/usr/lib64;/usr/X11R6/lib64',true);
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{$else powerpc64}
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LibrarySearchPath.AddPath('/lib;/usr/lib;/usr/X11R6/lib',true);
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{$endif powerpc64}
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{$endif x86_64}
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end;
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procedure TLinkerLinux.SetDefaultInfo;
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{
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This will also detect which libc version will be used
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}
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const
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{$ifdef i386} platform_select='-b elf32-i386 -m elf_i386';{$endif}
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{$ifdef x86_64} platform_select='-b elf64-x86-64 -m elf_x86_64';{$endif}
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{$ifdef powerpc}platform_select='-b elf32-powerpc -m elf32ppclinux';{$endif}
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{$ifdef POWERPC64} platform_select='-b elf64-powerpc -m elf64ppc';{$endif}
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{$ifdef sparc} platform_select='-b elf32-sparc -m elf32_sparc';{$endif}
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{$ifdef arm} platform_select='';{$endif} {unknown :( }
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{$ifdef m68k} platform_select='';{$endif} {unknown :( }
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{$ifdef m68k}
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var
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St : TSearchRec;
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{$endif m68k}
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begin
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with Info do
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begin
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ExeCmd[1]:='ld '+platform_select+' $OPT $DYNLINK $STATIC $GCSECTIONS $STRIP -L. -o $EXE $RES';
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DllCmd[1]:='ld '+platform_select+' $OPT $INIT $FINI $SONAME -shared -L. -o $EXE $RES -E';
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DllCmd[2]:='strip --strip-unneeded $EXE';
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{$ifdef m68k}
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libctype:=glibc2;
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if FindFirst('/lib/ld*',faAnyFile+faSymLink,st)<>0 then
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begin
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repeat
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if copy(st.name,1,5)='ld-2.' then
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begin
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DynamicLinker:='/lib/'+St.name;
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if st.name[6]<>'0' then
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libctype:=glibc21;
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break;
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end;
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until FindNext(St)<>0;
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end;
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FindClose(St);
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{$endif m68k}
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{$ifdef i386}
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{
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Search order:
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glibc 2.1+
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uclibc
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glibc 2.0
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If none is found (e.g. when cross compiling) glibc21 is assumed
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}
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if FileExists('/lib/ld-linux.so.2',false) then
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begin
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DynamicLinker:='/lib/ld-linux.so.2';
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libctype:=glibc21;
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end
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else if fileexists('/lib/ld-uClibc.so.0',false) then
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begin
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dynamiclinker:='/lib/ld-uClibc.so.0';
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libctype:=uclibc;
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end
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else if fileexists('/lib/ld-linux.so.1',false) then
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begin
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DynamicLinker:='/lib/ld-linux.so.1';
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libctype:=glibc2;
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end
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else
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begin
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{ default is glibc 2.1+ compatible }
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DynamicLinker:='/lib/ld-linux.so.2';
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libctype:=glibc21;
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end;
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{$endif i386}
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{$ifdef x86_64}
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DynamicLinker:='/lib64/ld-linux-x86-64.so.2';
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libctype:=glibc2;
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{$endif x86_64}
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{$ifdef sparc}
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DynamicLinker:='/lib/ld-linux.so.2';
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libctype:=glibc2;
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{$endif sparc}
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{$ifdef powerpc}
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DynamicLinker:='/lib/ld.so.1';
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libctype:=glibc2;
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{$endif powerpc}
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{$ifdef powerpc64}
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DynamicLinker:='/lib64/ld64.so.1';
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libctype:=glibc2;
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{$endif powerpc64}
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{$ifdef arm}
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DynamicLinker:='/lib/ld-linux.so.2';
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libctype:=glibc2;
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{$endif arm}
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end;
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end;
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procedure TLinkerLinux.LoadPredefinedLibraryOrder;
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// put your linkorder/linkalias overrides here.
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// Note: assumes only called when reordering/aliasing is used.
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Begin
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if not (cs_link_no_default_lib_order in current_settings.globalswitches) Then
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Begin
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LinkLibraryOrder.add('gcc','',15);
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LinkLibraryOrder.add('c','',100);
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LinkLibraryOrder.add('gmon','',120);
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LinkLibraryOrder.add('dl','',140);
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LinkLibraryOrder.add('pthread','',160);
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end;
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End;
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Procedure TLinkerLinux.InitSysInitUnitName;
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var
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csysinitunit,
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gsysinitunit : string[20];
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hp : tmodule;
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begin
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hp:=tmodule(loaded_units.first);
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while assigned(hp) do
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begin
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linklibc := hp.linkothersharedlibs.find('c');
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if linklibc then break;
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hp:=tmodule(hp.next);
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end;
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reorder := linklibc and ReOrderEntries;
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if current_module.islibrary then
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begin
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sysinitunit:='dll';
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csysinitunit:='dll';
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gsysinitunit:='dll';
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prtobj:='dllprt0';
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cprtobj:='dllprt0';
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gprtobj:='dllprt0';
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end
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else
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begin
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prtobj:='prt0';
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sysinitunit:='prc';
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case libctype of
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glibc21:
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begin
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cprtobj:='cprt21';
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gprtobj:='gprt21';
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csysinitunit:='c21';
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gsysinitunit:='c21g';
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end;
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uclibc:
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begin
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cprtobj:='ucprt0';
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gprtobj:='ugprt0';
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csysinitunit:='uc';
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gsysinitunit:='ucg';
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end
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else
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cprtobj:='cprt0';
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gprtobj:='gprt0';
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csysinitunit:='c';
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gsysinitunit:='g';
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end;
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end;
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if cs_profile in current_settings.moduleswitches then
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begin
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prtobj:=gprtobj;
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sysinitunit:=gsysinitunit;
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linklibc:=true;
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end
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else
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begin
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if linklibc then
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begin
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prtobj:=cprtobj;
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sysinitunit:=csysinitunit;
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end;
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end;
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sysinitunit:='si_'+sysinitunit;
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end;
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Function TLinkerLinux.WriteResponseFile(isdll:boolean) : Boolean;
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Var
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linkres : TLinkRes;
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i : longint;
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HPath : TCmdStrListItem;
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s,s1,s2 : TCmdStr;
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found1,
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found2 : boolean;
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begin
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result:=False;
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{ set special options for some targets }
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if cs_profile in current_settings.moduleswitches then
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begin
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if not(libctype in [glibc2,glibc21]) then
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AddSharedLibrary('gmon');
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AddSharedLibrary('c');
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end;
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{ Open link.res file }
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LinkRes:=TLinkRes.Create(outputexedir+Info.ResName);
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with linkres do
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begin
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{ Write path to search libraries }
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HPath:=TCmdStrListItem(current_module.locallibrarysearchpath.First);
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while assigned(HPath) do
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begin
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Add('SEARCH_DIR('+maybequoted(HPath.Str)+')');
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HPath:=TCmdStrListItem(HPath.Next);
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end;
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HPath:=TCmdStrListItem(LibrarySearchPath.First);
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while assigned(HPath) do
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begin
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Add('SEARCH_DIR('+maybequoted(HPath.Str)+')');
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HPath:=TCmdStrListItem(HPath.Next);
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end;
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StartSection('INPUT(');
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{ add objectfiles, start with prt0 always }
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if not (target_info.system in system_internal_sysinit) and (prtobj<>'') then
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AddFileName(maybequoted(FindObjectFile(prtobj,'',false)));
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{ try to add crti and crtbegin if linking to C }
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if linklibc then
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begin
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{ x86_64 requires this to use entry/exit code with pic,
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see also issue #8210 regarding a discussion
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no idea about the other non i386 CPUs (FK)
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}
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{$ifdef x86_64}
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if current_module.islibrary then
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begin
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if librarysearchpath.FindFile('crtbeginS.o',false,s) then
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AddFileName(s);
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end
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else
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{$endif x86_64}
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if librarysearchpath.FindFile('crtbegin.o',false,s) then
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AddFileName(s);
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if librarysearchpath.FindFile('crti.o',false,s) then
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AddFileName(s);
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end;
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{ main objectfiles }
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while not ObjectFiles.Empty do
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begin
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s:=ObjectFiles.GetFirst;
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if s<>'' then
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AddFileName(maybequoted(s));
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end;
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EndSection(')');
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{ Write staticlibraries }
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if not StaticLibFiles.Empty then
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begin
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Add('GROUP(');
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While not StaticLibFiles.Empty do
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begin
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S:=StaticLibFiles.GetFirst;
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AddFileName(maybequoted(s))
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end;
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Add(')');
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end;
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// we must reorder here because the result could empty sharedlibfiles
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if reorder Then
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ExpandAndApplyOrder(SharedLibFiles);
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// after this point addition of shared libs not allowed.
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{ Write sharedlibraries like -l<lib>, also add the needed dynamic linker
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here to be sure that it gets linked this is needed for glibc2 systems (PFV) }
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if not SharedLibFiles.Empty then
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begin
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Add('INPUT(');
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While not SharedLibFiles.Empty do
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begin
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S:=SharedLibFiles.GetFirst;
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if (s<>'c') or reorder then
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begin
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i:=Pos(target_info.sharedlibext,S);
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if i>0 then
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Delete(S,i,255);
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Add('-l'+s);
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end
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else
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begin
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linklibc:=true;
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end;
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end;
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{ be sure that libc is the last lib }
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if linklibc and not reorder then
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Add('-lc');
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{ when we have -static for the linker the we also need libgcc }
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if (cs_link_staticflag in current_settings.globalswitches) then
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Add('-lgcc');
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Add(')');
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end;
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{ objects which must be at the end }
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if linklibc and (libctype<>uclibc) then
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begin
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{ x86_64 requires this to use entry/exit code with pic,
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see also issue #8210 regarding a discussion
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no idea about the other non i386 CPUs (FK)
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}
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{$ifdef x86_64}
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if current_module.islibrary then
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found1:=librarysearchpath.FindFile('crtendS.o',false,s1)
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else
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{$endif x86_64}
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found1:=librarysearchpath.FindFile('crtend.o',false,s1);
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found2:=librarysearchpath.FindFile('crtn.o',false,s2);
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if found1 or found2 then
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|
begin
|
|
Add('INPUT(');
|
|
if found1 then
|
|
AddFileName(s1);
|
|
if found2 then
|
|
AddFileName(s2);
|
|
Add(')');
|
|
end;
|
|
end;
|
|
|
|
{Entry point.}
|
|
add('ENTRY(_start)');
|
|
|
|
{$ifdef x86_64}
|
|
{$define LINKERSCRIPT_INCLUDED}
|
|
add('SECTIONS');
|
|
add('{');
|
|
{Read-only sections, merged into text segment:}
|
|
if current_module.islibrary then
|
|
add(' . = 0 + SIZEOF_HEADERS;')
|
|
else
|
|
add(' PROVIDE (__executable_start = 0x0400000); . = 0x0400000 + SIZEOF_HEADERS;');
|
|
add(' . = 0 + SIZEOF_HEADERS;');
|
|
add(' .interp : { *(.interp) }');
|
|
add(' .hash : { *(.hash) }');
|
|
add(' .dynsym : { *(.dynsym) }');
|
|
add(' .dynstr : { *(.dynstr) }');
|
|
add(' .gnu.version : { *(.gnu.version) }');
|
|
add(' .gnu.version_d : { *(.gnu.version_d) }');
|
|
add(' .gnu.version_r : { *(.gnu.version_r) }');
|
|
add(' .rel.dyn :');
|
|
add(' {');
|
|
add(' *(.rel.init)');
|
|
add(' *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)');
|
|
add(' *(.rel.fini)');
|
|
add(' *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)');
|
|
add(' *(.rel.data.rel.ro*)');
|
|
add(' *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)');
|
|
add(' *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)');
|
|
add(' *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)');
|
|
add(' *(.rel.got)');
|
|
add(' *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)');
|
|
add(' }');
|
|
add(' .rela.dyn :');
|
|
add(' {');
|
|
add(' *(.rela.init)');
|
|
add(' *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)');
|
|
add(' *(.rela.fini)');
|
|
add(' *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)');
|
|
add(' *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)');
|
|
add(' *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)');
|
|
add(' *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)');
|
|
add(' *(.rela.got)');
|
|
add(' *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)');
|
|
add(' }');
|
|
add(' .rel.plt : { *(.rel.plt) }');
|
|
add(' .rela.plt : { *(.rela.plt) }');
|
|
add(' .init :');
|
|
add(' {');
|
|
add(' KEEP (*(.init))');
|
|
add(' } =0x90909090');
|
|
add(' .plt : { *(.plt) }');
|
|
add(' .text :');
|
|
add(' {');
|
|
add(' *(.text .stub .text.* .gnu.linkonce.t.*)');
|
|
add(' KEEP (*(.text.*personality*))');
|
|
{.gnu.warning sections are handled specially by elf32.em.}
|
|
add(' *(.gnu.warning)');
|
|
add(' } =0x90909090');
|
|
add(' .fini :');
|
|
add(' {');
|
|
add(' KEEP (*(.fini))');
|
|
add(' } =0x90909090');
|
|
add(' PROVIDE (_etext = .);');
|
|
add(' .rodata :');
|
|
add(' {');
|
|
add(' *(.rodata .rodata.* .gnu.linkonce.r.*)');
|
|
add(' }');
|
|
{Adjust the address for the data segment. We want to adjust up to
|
|
the same address within the page on the next page up.}
|
|
add(' . = ALIGN (0x1000) - ((0x1000 - .) & (0x1000 - 1));');
|
|
add(' .dynamic : { *(.dynamic) }');
|
|
add(' .got : { *(.got .toc) }');
|
|
add(' .got.plt : { *(.got.plt .toc.plt) }');
|
|
add(' .data :');
|
|
add(' {');
|
|
add(' *(.data .data.* .gnu.linkonce.d.*)');
|
|
add(' KEEP (*(.fpc .fpc.n_version .fpc.n_links))');
|
|
add(' KEEP (*(.gnu.linkonce.d.*personality*))');
|
|
add(' }');
|
|
add(' PROVIDE (_edata = .);');
|
|
add(' PROVIDE (edata = .);');
|
|
{$ifdef zsegment_threadvars}
|
|
add(' _z = .;');
|
|
add(' .threadvar 0 : AT (_z) { *(.threadvar .threadvar.* .gnu.linkonce.tv.*) }');
|
|
add(' PROVIDE (_threadvar_size = SIZEOF(.threadvar));');
|
|
add(' . = _z + SIZEOF (.threadvar);');
|
|
{$else}
|
|
add(' .threadvar : { *(.threadvar .threadvar.* .gnu.linkonce.tv.*) }');
|
|
{$endif}
|
|
add(' __bss_start = .;');
|
|
add(' .bss :');
|
|
add(' {');
|
|
add(' *(.dynbss)');
|
|
add(' *(.bss .bss.* .gnu.linkonce.b.*)');
|
|
add(' *(COMMON)');
|
|
{Align here to ensure that the .bss section occupies space up to
|
|
_end. Align after .bss to ensure correct alignment even if the
|
|
.bss section disappears because there are no input sections.}
|
|
add(' . = ALIGN(32 / 8);');
|
|
add(' }');
|
|
add(' . = ALIGN(32 / 8);');
|
|
add(' PROVIDE (_end = .);');
|
|
add(' PROVIDE (end = .);');
|
|
{Stabs debugging sections.}
|
|
add(' .stab 0 : { *(.stab) }');
|
|
add(' .stabstr 0 : { *(.stabstr) }');
|
|
add(' /* DWARF debug sections.');
|
|
add(' Symbols in the DWARF debugging sections are relative to the beginning');
|
|
add(' of the section so we begin them at 0. */');
|
|
add(' /* DWARF 1 */');
|
|
add(' .debug 0 : { *(.debug) }');
|
|
add(' .line 0 : { *(.line) }');
|
|
add(' /* GNU DWARF 1 extensions */');
|
|
add(' .debug_srcinfo 0 : { *(.debug_srcinfo) }');
|
|
add(' .debug_sfnames 0 : { *(.debug_sfnames) }');
|
|
add(' /* DWARF 1.1 and DWARF 2 */');
|
|
add(' .debug_aranges 0 : { *(.debug_aranges) }');
|
|
add(' .debug_pubnames 0 : { *(.debug_pubnames) }');
|
|
add(' /* DWARF 2 */');
|
|
add(' .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }');
|
|
add(' .debug_abbrev 0 : { *(.debug_abbrev) }');
|
|
add(' .debug_line 0 : { *(.debug_line) }');
|
|
add(' .debug_frame 0 : { *(.debug_frame) }');
|
|
add(' .debug_str 0 : { *(.debug_str) }');
|
|
add(' .debug_loc 0 : { *(.debug_loc) }');
|
|
add(' .debug_macinfo 0 : { *(.debug_macinfo) }');
|
|
add(' /* SGI/MIPS DWARF 2 extensions */');
|
|
add(' .debug_weaknames 0 : { *(.debug_weaknames) }');
|
|
add(' .debug_funcnames 0 : { *(.debug_funcnames) }');
|
|
add(' .debug_typenames 0 : { *(.debug_typenames) }');
|
|
add(' .debug_varnames 0 : { *(.debug_varnames) }');
|
|
add(' /DISCARD/ : { *(.note.GNU-stack) }');
|
|
add('}');
|
|
{$endif x86_64}
|
|
|
|
|
|
{$ifndef LINKERSCRIPT_INCLUDED}
|
|
{Sections.}
|
|
add('SECTIONS');
|
|
add('{');
|
|
{Read-only sections, merged into text segment:}
|
|
add(' PROVIDE (__executable_start = 0x010000); . = 0x010000 +0x100;');
|
|
add(' .interp : { *(.interp) }');
|
|
add(' .hash : { *(.hash) }');
|
|
add(' .dynsym : { *(.dynsym) }');
|
|
add(' .dynstr : { *(.dynstr) }');
|
|
add(' .gnu.version : { *(.gnu.version) }');
|
|
add(' .gnu.version_d : { *(.gnu.version_d) }');
|
|
add(' .gnu.version_r : { *(.gnu.version_r) }');
|
|
add(' .rel.dyn :');
|
|
add(' {');
|
|
add(' *(.rel.init)');
|
|
add(' *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)');
|
|
add(' *(.rel.fini)');
|
|
add(' *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)');
|
|
add(' *(.rel.data.rel.ro*)');
|
|
add(' *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)');
|
|
add(' *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)');
|
|
add(' *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)');
|
|
add(' *(.rel.got)');
|
|
add(' *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)');
|
|
add(' }');
|
|
add(' .rela.dyn :');
|
|
add(' {');
|
|
add(' *(.rela.init)');
|
|
add(' *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)');
|
|
add(' *(.rela.fini)');
|
|
add(' *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)');
|
|
add(' *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)');
|
|
add(' *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)');
|
|
add(' *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)');
|
|
add(' *(.rela.got)');
|
|
add(' *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)');
|
|
add(' }');
|
|
add(' .rel.plt : { *(.rel.plt) }');
|
|
add(' .rela.plt : { *(.rela.plt) }');
|
|
add(' .init :');
|
|
add(' {');
|
|
add(' KEEP (*(.init))');
|
|
add(' } =0x90909090');
|
|
add(' .plt : { *(.plt) }');
|
|
add(' .text :');
|
|
add(' {');
|
|
add(' *(.text .stub .text.* .gnu.linkonce.t.*)');
|
|
add(' KEEP (*(.text.*personality*))');
|
|
{.gnu.warning sections are handled specially by elf32.em.}
|
|
add(' *(.gnu.warning)');
|
|
add(' } =0x90909090');
|
|
add(' .fini :');
|
|
add(' {');
|
|
add(' KEEP (*(.fini))');
|
|
add(' } =0x90909090');
|
|
add(' PROVIDE (_etext = .);');
|
|
add(' .rodata :');
|
|
add(' {');
|
|
add(' *(.rodata .rodata.* .gnu.linkonce.r.*)');
|
|
add(' }');
|
|
{Adjust the address for the data segment. We want to adjust up to
|
|
the same address within the page on the next page up.}
|
|
add(' . = ALIGN (0x1000) - ((0x1000 - .) & (0x1000 - 1));');
|
|
add(' .dynamic : { *(.dynamic) }');
|
|
add(' .got : { *(.got) }');
|
|
add(' .got.plt : { *(.got.plt) }');
|
|
add(' .data :');
|
|
add(' {');
|
|
add(' *(.data .data.* .gnu.linkonce.d.*)');
|
|
add(' KEEP (*(.fpc .fpc.n_version .fpc.n_links))');
|
|
add(' KEEP (*(.gnu.linkonce.d.*personality*))');
|
|
add(' }');
|
|
add(' PROVIDE (_edata = .);');
|
|
add(' PROVIDE (edata = .);');
|
|
{$ifdef zsegment_threadvars}
|
|
add(' _z = .;');
|
|
add(' .threadvar 0 : AT (_z) { *(.threadvar .threadvar.* .gnu.linkonce.tv.*) }');
|
|
add(' PROVIDE (_threadvar_size = SIZEOF(.threadvar));');
|
|
add(' . = _z + SIZEOF (.threadvar);');
|
|
{$else}
|
|
add(' .threadvar : { *(.threadvar .threadvar.* .gnu.linkonce.tv.*) }');
|
|
{$endif}
|
|
add(' __bss_start = .;');
|
|
add(' .bss :');
|
|
add(' {');
|
|
add(' *(.dynbss)');
|
|
add(' *(.bss .bss.* .gnu.linkonce.b.*)');
|
|
add(' *(COMMON)');
|
|
{Align here to ensure that the .bss section occupies space up to
|
|
_end. Align after .bss to ensure correct alignment even if the
|
|
.bss section disappears because there are no input sections.}
|
|
add(' . = ALIGN(32 / 8);');
|
|
add(' }');
|
|
add(' . = ALIGN(32 / 8);');
|
|
add(' PROVIDE (_end = .);');
|
|
add(' PROVIDE (end = .);');
|
|
{Stabs debugging sections.}
|
|
add(' .stab 0 : { *(.stab) }');
|
|
add(' .stabstr 0 : { *(.stabstr) }');
|
|
add('}');
|
|
{$endif LINKERSCRIPT_INCLUDED}
|
|
{ Write and Close response }
|
|
writetodisk;
|
|
Free;
|
|
end;
|
|
|
|
WriteResponseFile:=True;
|
|
end;
|
|
|
|
|
|
function TLinkerLinux.MakeExecutable:boolean;
|
|
var
|
|
binstr,
|
|
cmdstr : TCmdStr;
|
|
success : boolean;
|
|
DynLinkStr : string[60];
|
|
GCSectionsStr,
|
|
StaticStr,
|
|
StripStr : string[40];
|
|
begin
|
|
if not(cs_link_nolink in current_settings.globalswitches) then
|
|
Message1(exec_i_linking,current_module.exefilename^);
|
|
|
|
{ Create some replacements }
|
|
StaticStr:='';
|
|
StripStr:='';
|
|
GCSectionsStr:='';
|
|
DynLinkStr:='';
|
|
if (cs_link_staticflag in current_settings.globalswitches) then
|
|
StaticStr:='-static';
|
|
if (cs_link_strip in current_settings.globalswitches) then
|
|
StripStr:='-s';
|
|
if (cs_link_map in current_settings.globalswitches) then
|
|
StripStr:='-Map '+maybequoted(ChangeFileExt(current_module.exefilename^,'.map'));
|
|
if use_smartlink_section then
|
|
GCSectionsStr:='--gc-sections';
|
|
If (cs_profile in current_settings.moduleswitches) or
|
|
((Info.DynamicLinker<>'') and (not SharedLibFiles.Empty)) then
|
|
begin
|
|
DynLinkStr:='-dynamic-linker='+Info.DynamicLinker;
|
|
if cshared Then
|
|
DynLinkStr:='--shared ' + DynLinkStr;
|
|
if rlinkpath<>'' Then
|
|
DynLinkStr:='--rpath-link '+rlinkpath + ' '+ DynLinkStr;
|
|
End;
|
|
|
|
{ Write used files and libraries }
|
|
WriteResponseFile(false);
|
|
|
|
{ Call linker }
|
|
SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
|
|
Replace(cmdstr,'$EXE',maybequoted(current_module.exefilename^));
|
|
Replace(cmdstr,'$OPT',Info.ExtraOptions);
|
|
Replace(cmdstr,'$RES',maybequoted(outputexedir+Info.ResName));
|
|
Replace(cmdstr,'$STATIC',StaticStr);
|
|
Replace(cmdstr,'$STRIP',StripStr);
|
|
Replace(cmdstr,'$GCSECTIONS',GCSectionsStr);
|
|
Replace(cmdstr,'$DYNLINK',DynLinkStr);
|
|
|
|
{ create dynamic symbol table? }
|
|
if HasExports then
|
|
cmdstr:=cmdstr+' -E';
|
|
|
|
success:=DoExec(FindUtil(utilsprefix+BinStr),CmdStr,true,false);
|
|
|
|
{ Remove ReponseFile }
|
|
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
|
|
DeleteFile(outputexedir+Info.ResName);
|
|
|
|
if (success) then
|
|
success:=PostProcessExecutable(current_module.exefilename^,false);
|
|
|
|
|
|
MakeExecutable:=success; { otherwise a recursive call to link method }
|
|
end;
|
|
|
|
|
|
Function TLinkerLinux.MakeSharedLibrary:boolean;
|
|
var
|
|
InitStr,
|
|
FiniStr,
|
|
SoNameStr : string[80];
|
|
binstr,
|
|
cmdstr : TCmdStr;
|
|
success : boolean;
|
|
begin
|
|
MakeSharedLibrary:=false;
|
|
if not(cs_link_nolink in current_settings.globalswitches) then
|
|
Message1(exec_i_linking,current_module.sharedlibfilename^);
|
|
|
|
{ Write used files and libraries }
|
|
WriteResponseFile(true);
|
|
|
|
{ Create some replacements }
|
|
InitStr:='-init FPC_LIB_START';
|
|
FiniStr:='-fini FPC_LIB_EXIT';
|
|
SoNameStr:='-soname '+ExtractFileName(current_module.sharedlibfilename^);
|
|
|
|
{ Call linker }
|
|
SplitBinCmd(Info.DllCmd[1],binstr,cmdstr);
|
|
Replace(cmdstr,'$EXE',maybequoted(current_module.sharedlibfilename^));
|
|
Replace(cmdstr,'$OPT',Info.ExtraOptions);
|
|
Replace(cmdstr,'$RES',maybequoted(outputexedir+Info.ResName));
|
|
Replace(cmdstr,'$INIT',InitStr);
|
|
Replace(cmdstr,'$FINI',FiniStr);
|
|
Replace(cmdstr,'$SONAME',SoNameStr);
|
|
success:=DoExec(FindUtil(utilsprefix+binstr),cmdstr,true,false);
|
|
|
|
{ Strip the library ? }
|
|
if success and (cs_link_strip in current_settings.globalswitches) then
|
|
begin
|
|
{ only remove non global symbols and debugging info for a library }
|
|
Info.DllCmd[2]:='strip --discard-all --strip-debug $EXE';
|
|
SplitBinCmd(Info.DllCmd[2],binstr,cmdstr);
|
|
Replace(cmdstr,'$EXE',maybequoted(current_module.sharedlibfilename^));
|
|
success:=DoExec(FindUtil(utilsprefix+binstr),cmdstr,true,false);
|
|
end;
|
|
|
|
{ Remove ReponseFile }
|
|
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
|
|
DeleteFile(outputexedir+Info.ResName);
|
|
|
|
MakeSharedLibrary:=success; { otherwise a recursive call to link method }
|
|
end;
|
|
|
|
|
|
function tlinkerLinux.postprocessexecutable(const fn : string;isdll:boolean):boolean;
|
|
var
|
|
cmdstr: string;
|
|
begin
|
|
result:=True;
|
|
if HasResources and
|
|
(target_res.id=res_elf) then
|
|
begin
|
|
cmdstr:=' -f -i '+maybequoted(fn);
|
|
result:=DoExec(FindUtil(utilsprefix+'fpcres'),cmdstr,false,false);
|
|
end;
|
|
end;
|
|
|
|
|
|
{*****************************************************************************
|
|
Initialize
|
|
*****************************************************************************}
|
|
|
|
initialization
|
|
{$ifdef i386}
|
|
RegisterExternalLinker(system_i386_linux_info,TLinkerLinux);
|
|
RegisterImport(system_i386_linux,timportliblinux);
|
|
RegisterExport(system_i386_linux,texportliblinux);
|
|
RegisterTarget(system_i386_linux_info);
|
|
RegisterRes(res_elf32_info,TWinLikeResourceFile);
|
|
|
|
RegisterExternalLinker(system_x86_6432_linux_info,TLinkerLinux);
|
|
RegisterImport(system_x86_6432_linux,timportliblinux);
|
|
RegisterExport(system_x86_6432_linux,texportliblinux);
|
|
RegisterTarget(system_x86_6432_linux_info);
|
|
{$endif i386}
|
|
{$ifdef m68k}
|
|
RegisterExternalLinker(system_m68k_linux_info,TLinkerLinux);
|
|
RegisterImport(system_m68k_linux,timportliblinux);
|
|
RegisterExport(system_m68k_linux,texportliblinux);
|
|
RegisterTarget(system_m68k_linux_info);
|
|
{$endif m68k}
|
|
{$ifdef powerpc}
|
|
RegisterExternalLinker(system_powerpc_linux_info,TLinkerLinux);
|
|
RegisterImport(system_powerpc_linux,timportliblinux);
|
|
RegisterExport(system_powerpc_linux,texportliblinux);
|
|
RegisterTarget(system_powerpc_linux_info);
|
|
{$endif powerpc}
|
|
{$ifdef powerpc64}
|
|
RegisterExternalLinker(system_powerpc64_linux_info,TLinkerLinux);
|
|
RegisterImport(system_powerpc64_linux,timportliblinux);
|
|
RegisterExport(system_powerpc64_linux,texportliblinux);
|
|
RegisterTarget(system_powerpc64_linux_info);
|
|
{$endif powerpc64}
|
|
{$ifdef alpha}
|
|
RegisterExternalLinker(system_alpha_linux_info,TLinkerLinux);
|
|
RegisterImport(system_alpha_linux,timportliblinux);
|
|
RegisterExport(system_alpha_linux,texportliblinux);
|
|
RegisterTarget(system_alpha_linux_info);
|
|
{$endif alpha}
|
|
{$ifdef x86_64}
|
|
RegisterExternalLinker(system_x86_64_linux_info,TLinkerLinux);
|
|
RegisterImport(system_x86_64_linux,timportliblinux);
|
|
RegisterExport(system_x86_64_linux,texportliblinux);
|
|
RegisterTarget(system_x86_64_linux_info);
|
|
RegisterRes(res_elf64_info,TWinLikeResourceFile);
|
|
{$endif x86_64}
|
|
{$ifdef SPARC}
|
|
RegisterExternalLinker(system_sparc_linux_info,TLinkerLinux);
|
|
RegisterImport(system_SPARC_linux,timportliblinux);
|
|
RegisterExport(system_SPARC_linux,texportliblinux);
|
|
RegisterTarget(system_SPARC_linux_info);
|
|
{$endif SPARC}
|
|
{$ifdef ARM}
|
|
RegisterExternalLinker(system_arm_linux_info,TLinkerLinux);
|
|
RegisterImport(system_arm_linux,timportliblinux);
|
|
RegisterExport(system_arm_linux,texportliblinux);
|
|
RegisterTarget(system_arm_linux_info);
|
|
{$endif ARM}
|
|
end.
|