579 lines
18 KiB
Ada
579 lines
18 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G N A T D L L --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1997-2020, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- GNATDLL is a Windows specific tool for building a DLL.
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-- Both relocatable and non-relocatable DLL's are supported
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with Gnatvsn;
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with MDLL.Fil; use MDLL.Fil;
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with MDLL.Utl;
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with Switch; use Switch;
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with Ada.Text_IO; use Ada.Text_IO;
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with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
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with Ada.Exceptions; use Ada.Exceptions;
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with Ada.Command_Line; use Ada.Command_Line;
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with GNAT.OS_Lib; use GNAT.OS_Lib;
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with GNAT.Command_Line; use GNAT.Command_Line;
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procedure Gnatdll is
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procedure Syntax;
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-- Print out usage
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procedure Check (Filename : String);
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-- Check that the file whose name is Filename exists
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procedure Parse_Command_Line;
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-- Parse the command line arguments passed to gnatdll
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procedure Check_Context;
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-- Check the context before running any commands to build the library
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Syntax_Error : exception;
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-- Raised when a syntax error is detected, in this case a usage info will
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-- be displayed.
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Context_Error : exception;
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-- Raised when some files (specified on the command line) are missing to
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-- build the DLL.
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Help : Boolean := False;
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-- Help will be set to True the usage information is to be displayed
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Version : constant String := Gnatvsn.Gnat_Version_String;
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-- Why should it be necessary to make a copy of this
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Default_DLL_Address : constant String := "0x11000000";
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-- Default address for non relocatable DLL (Win32)
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Lib_Filename : Unbounded_String := Null_Unbounded_String;
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-- The DLL filename that will be created (.dll)
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Def_Filename : Unbounded_String := Null_Unbounded_String;
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-- The definition filename (.def)
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List_Filename : Unbounded_String := Null_Unbounded_String;
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-- The name of the file containing the objects file to put into the DLL
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DLL_Address : Unbounded_String := To_Unbounded_String (Default_DLL_Address);
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-- The DLL's base address
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Gen_Map_File : Boolean := False;
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-- Set to True if a map file is to be generated
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Objects_Files : Argument_List_Access := MDLL.Null_Argument_List_Access;
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-- List of objects to put inside the library
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Ali_Files : Argument_List_Access := MDLL.Null_Argument_List_Access;
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-- For each Ada file specified, we keep a record of the corresponding
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-- ALI file. This list of SLI files is used to build the binder program.
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Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
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-- A list of options set in the command line
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Largs_Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
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Bargs_Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
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-- GNAT linker and binder args options
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type Build_Mode_State is (Import_Lib, Dynamic_Lib, Dynamic_Lib_Only, Nil);
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-- Import_Lib means only the .a file will be created, Dynamic_Lib means
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-- that both the DLL and the import library will be created.
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-- Dynamic_Lib_Only means that only the DLL will be created (no import
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-- library).
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Build_Mode : Build_Mode_State := Nil;
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-- Will be set when parsing the command line
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Must_Build_Relocatable : Boolean := True;
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-- True means build a relocatable DLL, will be set to False if a
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-- non-relocatable DLL must be built.
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------------
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-- Syntax --
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------------
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procedure Syntax is
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procedure P (Str : String) renames Put_Line;
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begin
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P ("Usage : gnatdll [options] [list-of-files]");
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New_Line;
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P ("[list-of-files] a list of Ada libraries (.ali) and/or " &
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"foreign object files");
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New_Line;
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P ("[options] can be");
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P (" -h Help - display this message");
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P (" -v Verbose");
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P (" -q Quiet");
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P (" -k Remove @nn suffix from exported names");
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P (" -g Generate debugging information");
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P (" -Idir Specify source and object files search path");
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P (" -l file File contains a list-of-files to be added to "
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& "the library");
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P (" -e file Definition file containing exports");
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P (" -d file Put objects in the relocatable dynamic "
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& "library <file>");
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P (" -b addr Set base address for the relocatable DLL");
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P (" default address is " & Default_DLL_Address);
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P (" -a[addr] Build non-relocatable DLL at address <addr>");
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P (" if <addr> is not specified use "
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& Default_DLL_Address);
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P (" -m Generate map file");
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P (" -n No-import - do not create the import library");
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P (" -bargs opts opts are passed to the binder");
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P (" -largs opts opts are passed to the linker");
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end Syntax;
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-----------
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-- Check --
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-----------
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procedure Check (Filename : String) is
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begin
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if not Is_Regular_File (Filename) then
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Raise_Exception
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(Context_Error'Identity, "Error: " & Filename & " not found.");
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end if;
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end Check;
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------------------------
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-- Parse_Command_Line --
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------------------------
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procedure Parse_Command_Line is
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procedure Add_File (Filename : String);
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-- Add one file to the list of file to handle
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procedure Add_Files_From_List (List_Filename : String);
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-- Add the files listed in List_Filename (one by line) to the list
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-- of file to handle
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Max_Files : constant := 5_000;
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Max_Options : constant := 100;
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-- These are arbitrary limits, a better way will be to use linked list.
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-- No, a better choice would be to use tables ???
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-- Limits on what???
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Ofiles : Argument_List (1 .. Max_Files);
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O : Positive := Ofiles'First;
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-- List of object files to put in the library. O is the next entry
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-- to be used.
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Afiles : Argument_List (1 .. Max_Files);
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A : Positive := Afiles'First;
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-- List of ALI files. A is the next entry to be used
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Gopts : Argument_List (1 .. Max_Options);
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G : Positive := Gopts'First;
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-- List of gcc options. G is the next entry to be used
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Lopts : Argument_List (1 .. Max_Options);
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L : Positive := Lopts'First;
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-- A list of -largs options (L is next entry to be used)
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Bopts : Argument_List (1 .. Max_Options);
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B : Positive := Bopts'First;
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-- A list of -bargs options (B is next entry to be used)
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Build_Import : Boolean := True;
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-- Set to False if option -n if specified (no-import)
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--------------
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-- Add_File --
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--------------
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procedure Add_File (Filename : String) is
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begin
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if Is_Ali (Filename) then
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Check (Filename);
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-- Record it to generate the binder program when
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-- building dynamic library
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Afiles (A) := new String'(Filename);
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A := A + 1;
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elsif Is_Obj (Filename) then
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Check (Filename);
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-- Just record this object file
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Ofiles (O) := new String'(Filename);
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O := O + 1;
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else
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-- Unknown file type
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Raise_Exception
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(Syntax_Error'Identity,
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"don't know what to do with " & Filename & " !");
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end if;
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end Add_File;
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-------------------------
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-- Add_Files_From_List --
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-------------------------
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procedure Add_Files_From_List (List_Filename : String) is
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File : File_Type;
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Buffer : String (1 .. 500);
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Last : Natural;
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begin
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Open (File, In_File, List_Filename);
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while not End_Of_File (File) loop
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Get_Line (File, Buffer, Last);
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Add_File (Buffer (1 .. Last));
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end loop;
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Close (File);
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exception
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when Name_Error =>
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Raise_Exception
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(Syntax_Error'Identity,
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"list-of-files file " & List_Filename & " not found.");
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end Add_Files_From_List;
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-- Start of processing for Parse_Command_Line
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begin
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Initialize_Option_Scan ('-', False, "bargs largs");
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-- scan gnatdll switches
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loop
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case Getopt ("g h v q k a? b: d: e: l: n m I:") is
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when ASCII.NUL =>
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exit;
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when 'h' =>
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Help := True;
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when 'g' =>
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Gopts (G) := new String'("-g");
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G := G + 1;
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when 'v' =>
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-- Turn verbose mode on
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MDLL.Verbose := True;
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if MDLL.Quiet then
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Raise_Exception
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(Syntax_Error'Identity,
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"impossible to use -q and -v together.");
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end if;
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when 'q' =>
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-- Turn quiet mode on
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MDLL.Quiet := True;
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if MDLL.Verbose then
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Raise_Exception
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(Syntax_Error'Identity,
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"impossible to use -v and -q together.");
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end if;
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when 'k' =>
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MDLL.Kill_Suffix := True;
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when 'a' =>
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if Parameter = "" then
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-- Default address for a relocatable dynamic library.
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-- address for a non relocatable dynamic library.
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DLL_Address := To_Unbounded_String (Default_DLL_Address);
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else
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DLL_Address := To_Unbounded_String (Parameter);
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end if;
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Must_Build_Relocatable := False;
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when 'b' =>
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DLL_Address := To_Unbounded_String (Parameter);
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Must_Build_Relocatable := True;
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when 'e' =>
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Def_Filename := To_Unbounded_String (Parameter);
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when 'd' =>
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-- Build a non relocatable DLL
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Lib_Filename := To_Unbounded_String (Parameter);
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if Def_Filename = Null_Unbounded_String then
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Def_Filename := To_Unbounded_String
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(Ext_To (Parameter, "def"));
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end if;
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Build_Mode := Dynamic_Lib;
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when 'm' =>
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Gen_Map_File := True;
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when 'n' =>
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Build_Import := False;
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when 'l' =>
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List_Filename := To_Unbounded_String (Parameter);
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when 'I' =>
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Gopts (G) := new String'("-I" & Parameter);
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G := G + 1;
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when others =>
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raise Invalid_Switch;
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end case;
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end loop;
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-- Get parameters
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loop
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declare
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File : constant String := Get_Argument (Do_Expansion => True);
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begin
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exit when File'Length = 0;
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Add_File (File);
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end;
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end loop;
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-- Get largs parameters
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Goto_Section ("largs");
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loop
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case Getopt ("*") is
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when ASCII.NUL =>
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exit;
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when others =>
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Lopts (L) := new String'(Full_Switch);
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L := L + 1;
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end case;
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end loop;
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-- Get bargs parameters
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Goto_Section ("bargs");
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loop
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case Getopt ("*") is
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when ASCII.NUL =>
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exit;
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when others =>
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Bopts (B) := new String'(Full_Switch);
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B := B + 1;
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end case;
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end loop;
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-- if list filename has been specified, parse it
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if List_Filename /= Null_Unbounded_String then
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Add_Files_From_List (To_String (List_Filename));
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end if;
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-- Check if the set of parameters are compatible
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if Build_Mode = Nil and then not Help and then not MDLL.Verbose then
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Raise_Exception (Syntax_Error'Identity, "nothing to do.");
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end if;
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-- -n option but no file specified
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if not Build_Import
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and then A = Afiles'First
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and then O = Ofiles'First
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then
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Raise_Exception
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(Syntax_Error'Identity,
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"-n specified but there are no objects to build the library.");
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end if;
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-- Check if we want to build an import library (option -e and
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-- no file specified)
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if Build_Mode = Dynamic_Lib
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and then A = Afiles'First
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and then O = Ofiles'First
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then
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Build_Mode := Import_Lib;
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end if;
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-- If map file is to be generated, add linker option here
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if Gen_Map_File and then Build_Mode = Import_Lib then
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Raise_Exception
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(Syntax_Error'Identity,
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"Can't generate a map file for an import library.");
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end if;
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-- Check if only a dynamic library must be built
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if Build_Mode = Dynamic_Lib and then not Build_Import then
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Build_Mode := Dynamic_Lib_Only;
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end if;
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if O /= Ofiles'First then
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Objects_Files := new Argument_List'(Ofiles (1 .. O - 1));
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end if;
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if A /= Afiles'First then
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Ali_Files := new Argument_List'(Afiles (1 .. A - 1));
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end if;
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if G /= Gopts'First then
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Options := new Argument_List'(Gopts (1 .. G - 1));
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end if;
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if L /= Lopts'First then
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Largs_Options := new Argument_List'(Lopts (1 .. L - 1));
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end if;
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if B /= Bopts'First then
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Bargs_Options := new Argument_List'(Bopts (1 .. B - 1));
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end if;
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exception
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when Invalid_Switch =>
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Raise_Exception
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(Syntax_Error'Identity,
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Message => "Invalid Switch " & Full_Switch);
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when Invalid_Parameter =>
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Raise_Exception
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(Syntax_Error'Identity,
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Message => "No parameter for " & Full_Switch);
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end Parse_Command_Line;
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-------------------
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-- Check_Context --
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-------------------
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procedure Check_Context is
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begin
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Check (To_String (Def_Filename));
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-- Check that each object file specified exists and raise exception
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-- Context_Error if it does not.
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for F in Objects_Files'Range loop
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Check (Objects_Files (F).all);
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end loop;
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end Check_Context;
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procedure Check_Version_And_Help is new Check_Version_And_Help_G (Syntax);
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-- Start of processing for Gnatdll
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begin
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Check_Version_And_Help ("GNATDLL", "1997");
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if Ada.Command_Line.Argument_Count = 0 then
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Help := True;
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else
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Parse_Command_Line;
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end if;
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if MDLL.Verbose or else Help then
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New_Line;
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Put_Line ("GNATDLL " & Version & " - Dynamic Libraries Builder");
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New_Line;
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end if;
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MDLL.Utl.Locate;
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if Help
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or else (MDLL.Verbose and then Ada.Command_Line.Argument_Count = 1)
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then
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Syntax;
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else
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Check_Context;
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case Build_Mode is
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when Import_Lib =>
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MDLL.Build_Import_Library
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(To_String (Lib_Filename),
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To_String (Def_Filename));
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when Dynamic_Lib =>
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MDLL.Build_Dynamic_Library
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(Objects_Files.all,
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Ali_Files.all,
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Options.all,
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Bargs_Options.all,
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Largs_Options.all,
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To_String (Lib_Filename),
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To_String (Def_Filename),
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To_String (DLL_Address),
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Build_Import => True,
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Relocatable => Must_Build_Relocatable,
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Map_File => Gen_Map_File);
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when Dynamic_Lib_Only =>
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MDLL.Build_Dynamic_Library
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(Objects_Files.all,
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Ali_Files.all,
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Options.all,
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Bargs_Options.all,
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Largs_Options.all,
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To_String (Lib_Filename),
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To_String (Def_Filename),
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To_String (DLL_Address),
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Build_Import => False,
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Relocatable => Must_Build_Relocatable,
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Map_File => Gen_Map_File);
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when Nil =>
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null;
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end case;
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end if;
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Set_Exit_Status (Success);
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exception
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when SE : Syntax_Error =>
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Put_Line ("Syntax error : " & Exception_Message (SE));
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New_Line;
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Syntax;
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Set_Exit_Status (Failure);
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when E : MDLL.Tools_Error | Context_Error =>
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Put_Line (Exception_Message (E));
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Set_Exit_Status (Failure);
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when others =>
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Put_Line ("gnatdll: INTERNAL ERROR. Please report");
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Set_Exit_Status (Failure);
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end Gnatdll;
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