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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- V X L I N K . L I N K --
-- --
-- B o d y --
-- --
-- Copyright (C) 2018, AdaCore --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
pragma Ada_2012;
with Ada.Command_Line; use Ada.Command_Line;
with GNAT.Directory_Operations; use GNAT.Directory_Operations;
package body VxLink.Link is
Gcc : constant String := VxLink.Gcc;
----------------
-- Initialize --
----------------
procedure Initialize
(Linker : out VxLink_Linker)
is
Leading : Boolean := True;
Next_Is_Object : Boolean := False;
begin
for J in 1 .. Ada.Command_Line.Argument_Count loop
declare
Arg : String renames Argument (J);
begin
if Next_Is_Object then
Next_Is_Object := False;
Linker.Dest_Object := To_Unbounded_String (Arg);
Leading := False;
elsif Argument (J) = "-o" then
Next_Is_Object := True;
elsif Argument (J) = "-noauto-register" then
-- Filter out this argument, and do not generate _ctors/_dtors
Linker.Add_CDtors := False;
elsif Arg = "-v" and then not Is_Verbose then
-- first -v means VxLink should be verbose, two -v passes -v to
-- the linker.
Set_Verbose (True);
else
if Arg = "-nostdlib" or Arg = "-nostartfiles" then
Linker.Add_CDtors := False;
end if;
if Leading then
Linker.Args_Leading.Append (Arg);
else
Linker.Args_Trailing.Append (Arg);
end if;
end if;
end;
end loop;
if Linker.Dest_Object = Null_Unbounded_String then
Set_Error_State ("no output object is defined");
elsif Linker.Add_CDtors then
-- We'll need to create intermediate artefacts, so we'll use the
-- destination object as base namespace just in case we have
-- several link operations in the same directory
declare
Obj : constant String :=
Base_Name (To_String (Linker.Dest_Object));
begin
for J in reverse Obj'Range loop
if Obj (J) = '.' then
Linker.Dest_Base :=
To_Unbounded_String (Obj (Obj'First .. J - 1));
exit;
end if;
end loop;
Linker.Partial_Obj := Linker.Dest_Base & "-partial.o";
end;
end if;
end Initialize;
-----------------
-- Needs_CDtor --
-----------------
function Needs_CDtor (Linker : VxLink_Linker) return Boolean is
begin
return Linker.Add_CDtors;
end Needs_CDtor;
--------------------
-- Partial_Object --
--------------------
function Partial_Object (Linker : VxLink_Linker) return String is
begin
return To_String (Linker.Partial_Obj);
end Partial_Object;
---------------
-- Namespace --
---------------
function Namespace (Linker : VxLink_Linker) return String is
begin
return To_String (Linker.Dest_Base);
end Namespace;
---------------------
-- Do_Initial_Link --
---------------------
procedure Do_Initial_Link (Linker : VxLink_Linker)
is
Args : Arguments_List;
Gxx_Path : constant String := Gxx;
begin
if Is_Error_State then
return;
end if;
if Gxx_Path'Length /= 0 then
Args.Append (Gxx);
else
Args.Append (Gcc);
end if;
Args.Append (Linker.Args_Leading);
Args.Append ("-o");
if Linker.Add_CDtors then
Args.Append (To_String (Linker.Partial_Obj));
else
Args.Append (To_String (Linker.Dest_Object));
end if;
Args.Append (Linker.Args_Trailing);
if not Linker.Add_CDtors then
Args.Append ("-nostartfiles");
end if;
Run (Args);
end Do_Initial_Link;
-------------------
-- Do_Final_Link --
-------------------
procedure Do_Final_Link
(Linker : VxLink_Linker;
Ctdt_Obj : String)
is
Args : Arguments_List;
begin
if not Linker.Add_CDtors then
return;
end if;
if Is_Error_State then
return;
end if;
Args.Append (Gcc);
Args.Append ("-nostdlib");
Args.Append (Ctdt_Obj);
Args.Append (To_String (Linker.Partial_Obj));
Args.Append ("-o");
Args.Append (To_String (Linker.Dest_Object));
Run (Args);
end Do_Final_Link;
end VxLink.Link;
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