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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- M A K E --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2022, Free Software Foundation, Inc. --
-- --
-- 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. --
-- --
------------------------------------------------------------------------------
with ALI; use ALI;
with ALI.Util; use ALI.Util;
with Csets;
with Debug;
with Fmap;
with Fname; use Fname;
with Fname.SF;
with Fname.UF; use Fname.UF;
with Gnatvsn; use Gnatvsn;
with Hostparm; use Hostparm;
with Makeusg;
with Make_Util; use Make_Util;
with Namet; use Namet;
with Opt; use Opt;
with Osint.M; use Osint.M;
with Osint; use Osint;
with Output; use Output;
with SFN_Scan;
with Sinput;
with Snames;
with Stringt;
pragma Warnings (Off);
with System.HTable;
pragma Warnings (On);
with Switch; use Switch;
with Switch.M; use Switch.M;
with Table;
with Targparm;
with Tempdir;
with Types; use Types;
with Ada.Command_Line; use Ada.Command_Line;
with Ada.Directories;
with Ada.Exceptions; use Ada.Exceptions;
with GNAT.Command_Line; use GNAT.Command_Line;
with GNAT.Ctrl_C;
with GNAT.Directory_Operations; use GNAT.Directory_Operations;
with GNAT.OS_Lib; use GNAT.OS_Lib;
package body Make is
use ASCII;
-- Make control characters visible
Standard_Library_Package_Body_Name : constant String := "s-stalib.adb";
System_Package_Spec_Name : constant String := "system.ads";
-- Every program depends on one of these packages: usually the first one,
-- or if Supress_Standard_Library is true on the second one. The dependency
-- is not always explicit and considering it is important when -f and -a
-- are used.
procedure Sigint_Intercepted;
pragma No_Return (Sigint_Intercepted);
-- Called when the program is interrupted by Ctrl-C to delete the
-- temporary mapping files and configuration pragmas files.
No_Mapping_File : constant Natural := 0;
type Compilation_Data is record
Pid : Process_Id;
Full_Source_File : File_Name_Type;
Lib_File : File_Name_Type;
Source_Unit : Unit_Name_Type;
Full_Lib_File : File_Name_Type;
Lib_File_Attr : aliased File_Attributes;
Mapping_File : Natural := No_Mapping_File;
end record;
-- Data recorded for each compilation process spawned
No_Compilation_Data : constant Compilation_Data :=
(Invalid_Pid, No_File, No_File, No_Unit_Name, No_File, Unknown_Attributes,
No_Mapping_File);
type Comp_Data_Arr is array (Positive range <>) of Compilation_Data;
type Comp_Data_Ptr is access Comp_Data_Arr;
Running_Compile : Comp_Data_Ptr;
-- Used to save information about outstanding compilations
Outstanding_Compiles : Natural := 0;
-- Current number of outstanding compiles
procedure Initialize;
Project_File_Name_Present : Boolean := False;
Project_File_Name : String_Access := null;
-------------------------
-- Note on terminology --
-------------------------
-- In this program, we use the phrase "termination" of a file name to refer
-- to the suffix that appears after the unit name portion. Very often this
-- is simply the extension, but in some cases, the sequence may be more
-- complex, for example in main.1.ada, the termination in this name is
-- ".1.ada" and in main_.ada the termination is "_.ada".
Unique_Compile : Boolean := False;
-- Set to True if -u or -U is used
Must_Compile : Boolean := False;
-- True if gnatmake is invoked with -f -u and one or several mains on the
-- command line.
Main_On_Command_Line : Boolean := False;
-- True if gnatmake is invoked with one or several mains on the command
-- line.
RTS_Specified : String_Access := null;
-- Used to detect multiple --RTS= switches
N_M_Switch : Natural := 0;
-- Used to count -mxxx switches that can affect multilib
-- The 3 following packages are used to store gcc, gnatbind and gnatlink
-- switches found in the project files.
package Gcc_Switches is new Table.Table (
Table_Component_Type => String_Access,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Gcc_Switches");
package Binder_Switches is new Table.Table (
Table_Component_Type => String_Access,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Binder_Switches");
package Linker_Switches is new Table.Table (
Table_Component_Type => String_Access,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Linker_Switches");
package Switches_To_Check is new Table.Table (
Table_Component_Type => String_Access,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Switches_To_Check");
package Failed_Links is new Table.Table (
Table_Component_Type => File_Name_Type,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 10,
Table_Increment => 100,
Table_Name => "Make.Failed_Links");
package Successful_Links is new Table.Table (
Table_Component_Type => File_Name_Type,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 10,
Table_Increment => 100,
Table_Name => "Make.Successful_Links");
Normalized_Switches : Argument_List_Access := new Argument_List (1 .. 10);
Last_Norm_Switch : Natural := 0;
Map_File : String_Access := null;
-- Value of switch --create-map-file
procedure Add_Library_Search_Dir (Path : String);
-- Call Add_Lib_Search_Dir with an absolute directory path. If Path is
-- relative path, it is relative to the current working directory.
procedure Add_Source_Search_Dir (Path : String);
-- Call Add_Src_Search_Dir with an absolute directory path. If Path is a
-- relative path, it is relative to the current working directory.
type Bad_Compilation_Info is record
File : File_Name_Type;
Unit : Unit_Name_Type;
Found : Boolean;
end record;
-- File is the name of the file for which a compilation failed. Unit is for
-- gnatdist use in order to easily get the unit name of a file when its
-- name is krunched or declared in gnat.adc. Found is False if the
-- compilation failed because the file could not be found.
package Bad_Compilation is new Table.Table (
Table_Component_Type => Bad_Compilation_Info,
Table_Index_Type => Natural,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Bad_Compilation");
-- Full name of all the source files for which compilation fails
Do_Compile_Step : Boolean := True;
Do_Bind_Step : Boolean := True;
Do_Link_Step : Boolean := True;
-- Flags to indicate what step should be executed. Can be set to False
-- with the switches -c, -b and -l. These flags are reset to True for
-- each invocation of procedure Gnatmake.
CodePeer_Mode_String : aliased String := "-P";
No_Shared_Switch : aliased Argument_List := (1 .. 0 => null);
Bind_Shared : Argument_List_Access := No_Shared_Switch'Access;
-- Switch to added in front of gnatbind switches. By default no switch is
-- added. Switch "-shared" is added if there is a non-static Library
-- Project File.
Shared_Libgcc : aliased String := "-shared-libgcc";
No_Shared_Libgcc_Switch : aliased Argument_List := (1 .. 0 => null);
Shared_Libgcc_Switch : aliased Argument_List :=
(1 => Shared_Libgcc'Access);
Link_With_Shared_Libgcc : Argument_List_Access :=
No_Shared_Libgcc_Switch'Access;
procedure Make_Failed (S : String);
pragma No_Return (Make_Failed);
-- Delete all temp files created by Gnatmake and call Osint.Fail, with the
-- parameter S (see osint.ads).
--------------------------
-- Obsolete Executables --
--------------------------
Executable_Obsolete : Boolean := False;
-- Executable_Obsolete is initially set to False for each executable,
-- and is set to True whenever one of the source of the executable is
-- compiled, or has already been compiled for another executable.
Max_Header : constant := 200;
-- This needs a proper comment, it used to say "arbitrary" that's not an
-- adequate comment ???
type Header_Num is range 1 .. Max_Header;
-- Header_Num for the hash table Obsoleted below
function Hash (F : File_Name_Type) return Header_Num;
-- Hash function for the hash table Obsoleted below
package Obsoleted is new System.HTable.Simple_HTable
(Header_Num => Header_Num,
Element => Boolean,
No_Element => False,
Key => File_Name_Type,
Hash => Hash,
Equal => "=");
-- A hash table to keep all files that have been compiled, to detect
-- if an executable is up to date or not.
procedure Enter_Into_Obsoleted (F : File_Name_Type);
-- Enter a file name, without directory information, into the hash table
-- Obsoleted.
function Is_In_Obsoleted (F : File_Name_Type) return Boolean;
-- Check if a file name, without directory information, has already been
-- entered into the hash table Obsoleted.
type Dependency is record
This : File_Name_Type;
Depends_On : File_Name_Type;
end record;
-- Components of table Dependencies below
package Dependencies is new Table.Table (
Table_Component_Type => Dependency,
Table_Index_Type => Integer,
Table_Low_Bound => 1,
Table_Initial => 20,
Table_Increment => 100,
Table_Name => "Make.Dependencies");
-- A table to keep dependencies, to be able to decide if an executable
-- is obsolete. More explanation needed ???
----------------------------
-- Arguments and Switches --
----------------------------
Arguments : Argument_List_Access;
-- Used to gather the arguments for invocation of the compiler
Last_Argument : Natural := 0;
-- Last index of arguments in Arguments above
Dummy_Switch : constant String_Access := new String'("- ");
-- Used to initialized Prev_Switch in procedure Check
procedure Add_Arguments (Args : Argument_List);
-- Add arguments to global variable Arguments, increasing its size
-- if necessary and adjusting Last_Argument.
-------------------
-- Misc Routines --
-------------------
procedure List_Depend;
-- Prints to standard output the list of object dependencies. This list
-- can be used directly in a Makefile. A call to Compile_Sources must
-- precede the call to List_Depend. Also because this routine uses the
-- ALI files that were originally loaded and scanned by Compile_Sources,
-- no additional ALI files should be scanned between the two calls (i.e.
-- between the call to Compile_Sources and List_Depend.)
procedure List_Bad_Compilations;
-- Prints out the list of all files for which the compilation failed
Usage_Needed : Boolean := True;
-- Flag used to make sure Makeusg is call at most once
procedure Usage;
-- Call Makeusg, if Usage_Needed is True.
-- Set Usage_Needed to False.
procedure Debug_Msg (S : String; N : Name_Id);
procedure Debug_Msg (S : String; N : File_Name_Type);
procedure Debug_Msg (S : String; N : Unit_Name_Type);
-- If Debug.Debug_Flag_W is set outputs string S followed by name N
-----------------------
-- Gnatmake Routines --
-----------------------
subtype Lib_Mark_Type is Byte;
-- Used in Mark_Directory
Ada_Lib_Dir : constant Lib_Mark_Type := 1;
-- Used to mark a directory as a GNAT lib dir
-- Note that the notion of GNAT lib dir is no longer used. The code related
-- to it has not been removed to give an idea on how to use the directory
-- prefix marking mechanism.
-- An Ada library directory is a directory containing ali and object files
-- but no source files for the bodies (the specs can be in the same or some
-- other directory). These directories are specified in the Gnatmake
-- command line with the switch "-Adir" (to specify the spec location -Idir
-- cab be used). Gnatmake skips the missing sources whose ali are in Ada
-- library directories. For an explanation of why Gnatmake behaves that
-- way, see the spec of Make.Compile_Sources. The directory lookup penalty
-- is incurred every single time this routine is called.
function In_Ada_Lib_Dir (File : File_Name_Type) return Boolean;
-- Get directory prefix of this file and get lib mark stored in name
-- table for this directory. Then check if an Ada lib mark has been set.
procedure Mark_Directory (Dir : String; Mark : Lib_Mark_Type);
-- Store the absolute path from Dir in name table and set lib mark as name
-- info to identify Ada libraries.
--
-- If Dir is a relative path, it is relative to the current working
-- directory.
Output_Is_Object : Boolean := True;
-- Set to False when using a switch -S for the compiler
procedure Check_For_S_Switch;
-- Set Output_Is_Object to False when the -S switch is used for the
-- compiler.
procedure Process_Multilib;
-- Add appropriate --RTS argument to handle multilib
procedure Compute_Executable
(Main_Source_File : File_Name_Type;
Executable : out File_Name_Type;
Non_Std_Executable : out Boolean);
-- Parse the linker switches and project file to compute the name of the
-- executable to generate.
--
-- When the platform expects a specific extension for the generated binary,
-- there is a chance that the linker might not use the right name for the
-- it. Non_Std_Executable is set to True in this case.
procedure Compilation_Phase
(Main_Source_File : File_Name_Type;
Current_Main_Index : Int := 0;
Total_Compilation_Failures : in out Natural;
Executable : File_Name_Type := No_File;
Stop_Compile : out Boolean);
-- Build all source files for a given main file
--
-- Current_Main_Index, if not zero, is the index of the current main unit
-- in its source file.
--
-- Stand_Alone_Libraries is set to True when there are Stand-Alone
-- Libraries, so that gnatbind is invoked with the -F switch to force
-- checking of elaboration flags.
--
-- Stop_Compile is set to true if we should not try to compile any more
-- of the main units
procedure Binding_Phase
(Main_ALI_File : File_Name_Type);
-- Stand_Alone_Libraries should be set to True when there are Stand-Alone
-- Libraries, so that gnatbind is invoked with the -F switch to force
-- checking of elaboration flags.
procedure Linking_Phase
(Non_Std_Executable : Boolean := False;
Executable : File_Name_Type := No_File;
Main_ALI_File : File_Name_Type);
-- Perform the link of a single executable. The ali file corresponds
-- to Main_ALI_File. Executable is the file name of an executable.
-- Non_Std_Executable is set to True when there is a possibility that
-- the linker will not choose the correct executable file name.
----------------------------------------------------
-- Compiler, Binder & Linker Data and Subprograms --
----------------------------------------------------
Gcc : String_Access := Program_Name ("gcc", "gnatmake");
Gnatbind : String_Access := Program_Name ("gnatbind", "gnatmake");
Gnatlink : String_Access := Program_Name ("gnatlink", "gnatmake");
-- Default compiler, binder, linker programs
Gcc_Path : String_Access :=
GNAT.OS_Lib.Locate_Exec_On_Path (Gcc.all);
Gnatbind_Path : String_Access :=
GNAT.OS_Lib.Locate_Exec_On_Path (Gnatbind.all);
Gnatlink_Path : String_Access :=
GNAT.OS_Lib.Locate_Exec_On_Path (Gnatlink.all);
-- Path for compiler, binder, linker programs, defaulted now for gnatdist.
-- Changed later if overridden on command line.
Comp_Flag : constant String_Access := new String'("-c");
Output_Flag : constant String_Access := new String'("-o");
Ada_Flag_1 : constant String_Access := new String'("-x");
Ada_Flag_2 : constant String_Access := new String'("ada");
AdaSCIL_Flag : constant String_Access := new String'("adascil");
GNAT_Flag : constant String_Access := new String'("-gnatg");
Do_Not_Check_Flag : constant String_Access := new String'("-x");
Object_Suffix : constant String := Get_Target_Object_Suffix.all;
Syntax_Only : Boolean := False;
-- Set to True when compiling with -gnats
Output_File_Name_Seen : Boolean := False;
-- Set to True after having scanned the file_name for
-- switch "-o file_name"
Object_Directory_Seen : Boolean := False;
-- Set to True after having scanned the object directory for
-- switch "-D obj_dir".
Object_Directory_Path : String_Access := null;
-- The path name of the object directory, set with switch -D
type Make_Program_Type is (None, Compiler, Binder, Linker);
Program_Args : Make_Program_Type := None;
-- Used to indicate if we are scanning gnatmake, gcc, gnatbind, or gnatbind
-- options within the gnatmake command line. Used in Scan_Make_Arg only,
-- but must be global since value preserved from one call to another.
procedure Add_Switch
(S : String_Access;
Program : Make_Program_Type;
Append_Switch : Boolean := True);
procedure Add_Switch
(S : String;
Program : Make_Program_Type;
Append_Switch : Boolean := True);
-- Make invokes one of three programs (the compiler, the binder or the
-- linker). For the sake of convenience, some program specific switches
-- can be passed directly on the gnatmake command line. This procedure
-- records these switches so that gnatmake can pass them to the right
-- program. S is the switch to be added at the end of the command line
-- for Program if Append_Switch is True. If Append_Switch is False S is
-- added at the beginning of the command line.
procedure Check
(Source_File : File_Name_Type;
The_Args : Argument_List;
Lib_File : File_Name_Type;
Full_Lib_File : File_Name_Type;
Lib_File_Attr : access File_Attributes;
Read_Only : Boolean;
ALI : out ALI_Id;
O_File : out File_Name_Type;
O_Stamp : out Time_Stamp_Type);
-- Determines whether the library file Lib_File is up-to-date or not. The
-- full name (with path information) of the object file corresponding to
-- Lib_File is returned in O_File. Its time stamp is saved in O_Stamp.
-- ALI is the ALI_Id corresponding to Lib_File. If Lib_File in not
-- up-to-date, then the corresponding source file needs to be recompiled.
-- In this case ALI = No_ALI_Id.
-- Full_Lib_File must be the result of calling Osint.Full_Lib_File_Name on
-- Lib_File. Precomputing it saves system calls. Lib_File_Attr is the
-- initialized attributes of that file, which is also used to save on
-- system calls (it can safely be initialized to Unknown_Attributes).
procedure Check_Linker_Options
(E_Stamp : Time_Stamp_Type;
O_File : out File_Name_Type;
O_Stamp : out Time_Stamp_Type);
-- Checks all linker options for linker files that are newer
-- than E_Stamp. If such objects are found, the youngest object
-- is returned in O_File and its stamp in O_Stamp.
--
-- If no obsolete linker files were found, the first missing
-- linker file is returned in O_File and O_Stamp is empty.
-- Otherwise O_File is No_File.
procedure Collect_Arguments (Args : Argument_List);
-- Collect all arguments for a source to be compiled.
procedure Display (Program : String; Args : Argument_List);
-- Displays Program followed by the arguments in Args if variable
-- Display_Executed_Programs is set. The lower bound of Args must be 1.
procedure Report_Compilation_Failed;
pragma No_Return (Report_Compilation_Failed);
-- Delete all temporary files and fail graciously
-----------------
-- Mapping files
-----------------
type Temp_Path_Names is array (Positive range <>) of Path_Name_Type;
type Temp_Path_Ptr is access Temp_Path_Names;
type Free_File_Indexes is array (Positive range <>) of Positive;
type Free_Indexes_Ptr is access Free_File_Indexes;
type Mapping_File_Data is record
Mapping_File_Names : Temp_Path_Ptr;
-- The name ids of the temporary mapping files used. This is indexed
-- on the maximum number of compilation processes we will be spawning
-- (-j parameter)
Last_Mapping_File_Names : Natural;
-- Index of the last mapping file created for this project
Free_Mapping_File_Indexes : Free_Indexes_Ptr;
-- Indexes in Mapping_File_Names of the mapping file names that can be
-- reused for subsequent compilations.
Last_Free_Indexes : Natural;
-- Number of mapping files that can be reused
end record;
-- Information necessary when compiling a project
The_Mapping_Files : Mapping_File_Data;
Gnatmake_Mapping_File : String_Access := null;
-- The path name of a mapping file specified by switch -C=
procedure Init_Mapping_File (File_Index : out Natural);
-- Create a new mapping file or reuse one already created.
package Temp_File_Paths is new Table.Table
(Table_Component_Type => Path_Name_Type,
Table_Index_Type => Natural,
Table_Low_Bound => 1,
Table_Initial => 4,
Table_Increment => 100,
Table_Name => "Make.Temp_File_Paths",
Release_Threshold => 0);
procedure Record_Temp_File (Path : Path_Name_Type);
-- Record the path of a temporary file, so that it can be deleted at the
-- end of execution of gnatmake.
procedure Record_Temp_File (Path : Path_Name_Type) is
begin
for J in 1 .. Temp_File_Paths.Last loop
if Temp_File_Paths.Table (J) = Path then
return;
end if;
end loop;
Temp_File_Paths.Append (Path);
end Record_Temp_File;
-------------------------------------------------
-- Subprogram declarations moved from the spec --
-------------------------------------------------
procedure Bind (ALI_File : File_Name_Type; Args : Argument_List);
-- Binds ALI_File. Args are the arguments to pass to the binder.
-- Args must have a lower bound of 1.
-- If a compilation, bind or link failed one of the following 3 exceptions
-- is raised. These need to be handled by the calling routines.
procedure Compile_Sources
(Main_Source : File_Name_Type;
Args : Argument_List;
First_Compiled_File : out File_Name_Type;
Most_Recent_Obj_File : out File_Name_Type;
Most_Recent_Obj_Stamp : out Time_Stamp_Type;
Main_Unit : out Boolean;
Compilation_Failures : out Natural;
Main_Index : Int := 0;
Check_Readonly_Files : Boolean := False;
Do_Not_Execute : Boolean := False;
Force_Compilations : Boolean := False;
Keep_Going : Boolean := False;
In_Place_Mode : Boolean := False;
Initialize_ALI_Data : Boolean := True;
Max_Process : Positive := 1);
-- Compile_Sources will recursively compile all the sources needed by
-- Main_Source. Before calling this routine make sure Namet has been
-- initialized. This routine can be called repeatedly with different
-- Main_Source file as long as all the source (-I flags), library
-- (-B flags) and ada library (-A flags) search paths between calls are
-- *exactly* the same. The default directory must also be the same.
--
-- Args contains the arguments to use during the compilations.
-- The lower bound of Args must be 1.
--
-- First_Compiled_File is set to the name of the first file that is
-- compiled or that needs to be compiled. This is set to No_Name if no
-- compilations were needed.
--
-- Most_Recent_Obj_File is set to the full name of the most recent
-- object file found when no compilations are needed, that is when
-- First_Compiled_File is set to No_Name. When First_Compiled_File
-- is set then Most_Recent_Obj_File is set to No_Name.
--
-- Most_Recent_Obj_Stamp is the time stamp of Most_Recent_Obj_File.
--
-- Main_Unit is set to True if Main_Source can be a main unit.
-- If Do_Not_Execute is False and First_Compiled_File /= No_Name
-- the value of Main_Unit is always False.
-- Is this used any more??? It is certainly not used by gnatmake???
--
-- Compilation_Failures is a count of compilation failures. This count
-- is used to extract compilation failure reports with Extract_Failure.
--
-- Main_Index, when not zero, is the index of the main unit in source
-- file Main_Source which is a multi-unit source.
-- Zero indicates that Main_Source is a single unit source file.
--
-- Check_Readonly_Files set it to True to compile source files
-- which library files are read-only. When compiling GNAT predefined
-- files the "-gnatg" flag is used.
--
-- Do_Not_Execute set it to True to find out the first source that
-- needs to be recompiled, but without recompiling it. This file is
-- saved in First_Compiled_File.
--
-- Force_Compilations forces all compilations no matter what but
-- recompiles read-only files only if Check_Readonly_Files
-- is set.
--
-- Keep_Going when True keep compiling even in the presence of
-- compilation errors.
--
-- In_Place_Mode when True save library/object files in their object
-- directory if they already exist; otherwise, in the source directory.
--
-- Initialize_ALI_Data set it to True when you want to initialize ALI
-- data-structures. This is what you should do most of the time.
-- (especially the first time around when you call this routine).
-- This parameter is set to False to preserve previously recorded
-- ALI file data.
--
-- Max_Process is the maximum number of processes that should be spawned
-- to carry out compilations.
--
-- Flags in Package Opt Affecting Compile_Sources
-- -----------------------------------------------
--
-- Check_Object_Consistency set it to False to omit all consistency
-- checks between an .ali file and its corresponding object file.
-- When this flag is set to true, every time an .ali is read,
-- package Osint checks that the corresponding object file
-- exists and is more recent than the .ali.
--
-- Use of Name Table Info
-- ----------------------
--
-- All file names manipulated by Compile_Sources are entered into the
-- Names table. The Byte field of a source file is used to mark it.
--
-- Calling Compile_Sources Several Times
-- -------------------------------------
--
-- Upon return from Compile_Sources all the ALI data structures are left
-- intact for further browsing. HOWEVER upon entry to this routine ALI
-- data structures are re-initialized if parameter Initialize_ALI_Data
-- above is set to true. Typically this is what you want the first time
-- you call Compile_Sources. You should not load an ali file, call this
-- routine with flag Initialize_ALI_Data set to True and then expect
-- that ALI information to be around after the call. Note that the first
-- time you call Compile_Sources you better set Initialize_ALI_Data to
-- True unless you have called Initialize_ALI yourself.
--
-- Compile_Sources ALGORITHM : Compile_Sources (Main_Source)
-- -------------------------
--
-- 1. Insert Main_Source in a Queue (Q) and mark it.
--
-- 2. Let unit.adb be the file at the head of the Q. If unit.adb is
-- missing but its corresponding ali file is in an Ada library directory
-- (see below) then, remove unit.adb from the Q and goto step 4.
-- Otherwise, look at the files under the D (dependency) section of
-- unit.ali. If unit.ali does not exist or some of the time stamps do
-- not match, (re)compile unit.adb.
--
-- An Ada library directory is a directory containing Ada specs, ali
-- and object files but no source files for the bodies. An Ada library
-- directory is communicated to gnatmake by means of some switch so that
-- gnatmake can skip the sources whole ali are in that directory.
-- There are two reasons for skipping the sources in this case. Firstly,
-- Ada libraries typically come without full sources but binding and
-- linking against those libraries is still possible. Secondly, it would
-- be very wasteful for gnatmake to systematically check the consistency
-- of every external Ada library used in a program. The binder is
-- already in charge of catching any potential inconsistencies.
--
-- 3. Look into the W section of unit.ali and insert into the Q all
-- unmarked source files. Mark all files newly inserted in the Q.
-- Specifically, assuming that the W section looks like
--
-- W types%s types.adb types.ali
-- W unchecked_deallocation%s
-- W xref_tab%s xref_tab.adb xref_tab.ali
--
-- Then xref_tab.adb and types.adb are inserted in the Q if they are not
-- already marked.
-- Note that there is no file listed under W unchecked_deallocation%s
-- so no generic body should ever be explicitly compiled (unless the
-- Main_Source at the start was a generic body).
--
-- 4. Repeat steps 2 and 3 above until the Q is empty
--
-- Note that the above algorithm works because the units withed in
-- subunits are transitively included in the W section (with section) of
-- the main unit. Likewise the withed units in a generic body needed
-- during a compilation are also transitively included in the W section
-- of the originally compiled file.
procedure Link
(ALI_File : File_Name_Type;
Args : Argument_List;
Success : out Boolean);
-- Links ALI_File. Args are the arguments to pass to the linker.
-- Args must have a lower bound of 1. Success indicates if the link
-- succeeded or not.
Gnatmake_Switch_Found : Boolean := False;
procedure Scan_Make_Arg (Argv : String);
-- Scan make arguments. Argv is a single argument to be processed.
-------------------
-- Add_Arguments --
-------------------
procedure Add_Arguments (Args : Argument_List) is
begin
if Arguments = null then
Arguments := new Argument_List (1 .. Args'Length + 10);
else
while Last_Argument + Args'Length > Arguments'Last loop
declare
New_Arguments : constant Argument_List_Access :=
new Argument_List (1 .. Arguments'Last * 2);
begin
New_Arguments (1 .. Last_Argument) :=
Arguments (1 .. Last_Argument);
Arguments := New_Arguments;
end;
end loop;
end if;
Arguments (Last_Argument + 1 .. Last_Argument + Args'Length) := Args;
Last_Argument := Last_Argument + Args'Length;
end Add_Arguments;
----------------------------
-- Add_Library_Search_Dir --
----------------------------
procedure Add_Library_Search_Dir (Path : String) is
begin
Add_Lib_Search_Dir (Normalize_Pathname (Path));
end Add_Library_Search_Dir;
---------------------------
-- Add_Source_Search_Dir --
---------------------------
procedure Add_Source_Search_Dir (Path : String) is
begin
Add_Src_Search_Dir (Normalize_Pathname (Path));
end Add_Source_Search_Dir;
----------------
-- Add_Switch --
----------------
procedure Add_Switch
(S : String_Access;
Program : Make_Program_Type;
Append_Switch : Boolean := True)
is
generic
with package T is new Table.Table (<>);
procedure Generic_Position (New_Position : out Integer);
-- Generic procedure that chooses a position for S in T at the
-- beginning or the end, depending on the boolean Append_Switch.
-- Calling this procedure may expand the table.
----------------------
-- Generic_Position --
----------------------
procedure Generic_Position (New_Position : out Integer) is
begin
T.Increment_Last;
if Append_Switch then
New_Position := Integer (T.Last);
else
for J in reverse T.Table_Index_Type'Succ (T.First) .. T.Last loop
T.Table (J) := T.Table (T.Table_Index_Type'Pred (J));
end loop;
New_Position := Integer (T.First);
end if;
end Generic_Position;
procedure Gcc_Switches_Pos is new Generic_Position (Gcc_Switches);
procedure Binder_Switches_Pos is new Generic_Position (Binder_Switches);
procedure Linker_Switches_Pos is new Generic_Position (Linker_Switches);
New_Position : Integer;
-- Start of processing for Add_Switch
begin
case Program is
when Compiler =>
Gcc_Switches_Pos (New_Position);
Gcc_Switches.Table (New_Position) := S;
when Binder =>
Binder_Switches_Pos (New_Position);
Binder_Switches.Table (New_Position) := S;
when Linker =>
Linker_Switches_Pos (New_Position);
Linker_Switches.Table (New_Position) := S;
when None =>
raise Program_Error;
end case;
end Add_Switch;
procedure Add_Switch
(S : String;
Program : Make_Program_Type;
Append_Switch : Boolean := True)
is
begin
Add_Switch (S => new String'(S),
Program => Program,
Append_Switch => Append_Switch);
end Add_Switch;
----------
-- Bind --
----------
procedure Bind (ALI_File : File_Name_Type; Args : Argument_List) is
Bind_Args : Argument_List (1 .. Args'Last + 2);
Bind_Last : Integer;
Success : Boolean;
begin
pragma Assert (Args'First = 1);
-- Optimize the simple case where the gnatbind command line looks like
-- gnatbind -aO. -I- file.ali
-- into
-- gnatbind file.adb
if Args'Length = 2
and then Args (Args'First).all = "-aO" & Normalized_CWD
and then Args (Args'Last).all = "-I-"
and then ALI_File = Strip_Directory (ALI_File)
then
Bind_Last := Args'First - 1;
else
Bind_Last := Args'Last;
Bind_Args (Args'Range) := Args;
end if;
-- It is completely pointless to re-check source file time stamps. This
-- has been done already by gnatmake
Bind_Last := Bind_Last + 1;
Bind_Args (Bind_Last) := Do_Not_Check_Flag;
Get_Name_String (ALI_File);
Bind_Last := Bind_Last + 1;
Bind_Args (Bind_Last) := new String'(Name_Buffer (1 .. Name_Len));
GNAT.OS_Lib.Normalize_Arguments (Bind_Args (Args'First .. Bind_Last));
Display (Gnatbind.all, Bind_Args (Args'First .. Bind_Last));
if Gnatbind_Path = null then
Make_Failed ("error, unable to locate " & Gnatbind.all);
end if;
GNAT.OS_Lib.Spawn
(Gnatbind_Path.all, Bind_Args (Args'First .. Bind_Last), Success);
if not Success then
Make_Failed ("*** bind failed.");
end if;
end Bind;
-----------
-- Check --
-----------
procedure Check
(Source_File : File_Name_Type;
The_Args : Argument_List;
Lib_File : File_Name_Type;
Full_Lib_File : File_Name_Type;
Lib_File_Attr : access File_Attributes;
Read_Only : Boolean;
ALI : out ALI_Id;
O_File : out File_Name_Type;
O_Stamp : out Time_Stamp_Type)
is
function First_New_Spec (A : ALI_Id) return File_Name_Type;
-- Looks in the with table entries of A and returns the spec file name
-- of the first withed unit (subprogram) for which no spec existed when
-- A was generated but for which there exists one now, implying that A
-- is now obsolete. If no such unit is found No_File is returned.
-- Otherwise the spec file name of the unit is returned.
--
-- **WARNING** in the event of Uname format modifications, one *MUST*
-- make sure this function is also updated.
--
-- Note: This function should really be in ali.adb and use Uname
-- services, but this causes the whole compiler to be dragged along
-- for gnatbind and gnatmake.
--------------------
-- First_New_Spec --
--------------------
function First_New_Spec (A : ALI_Id) return File_Name_Type is
Spec_File_Name : File_Name_Type := No_File;
function New_Spec (Uname : Unit_Name_Type) return Boolean;
-- Uname is the name of the spec or body of some ada unit. This
-- function returns True if the Uname is the name of a body which has
-- a spec not mentioned in ALI file A. If True is returned
-- Spec_File_Name above is set to the name of this spec file.
--------------
-- New_Spec --
--------------
function New_Spec (Uname : Unit_Name_Type) return Boolean is
Spec_Name : Unit_Name_Type;
File_Name : File_Name_Type;
begin
-- Test whether Uname is the name of a body unit (i.e. ends
-- with %b).
Get_Name_String (Uname);
pragma
Assert (Name_Len > 2 and then Name_Buffer (Name_Len - 1) = '%');
if Name_Buffer (Name_Len) /= 'b' then
return False;
end if;
-- Convert unit name into spec name
-- ??? this code seems dubious in presence of pragma
-- Source_File_Name since there is no more direct relationship
-- between unit name and file name.
-- ??? Further, what about alternative subunit naming
Name_Buffer (Name_Len) := 's';
Spec_Name := Name_Find;
File_Name := Get_File_Name (Spec_Name, Subunit => False);
-- Look if File_Name is mentioned in A's sdep list.
-- If not look if the file exists. If it does return True.
for D in
ALIs.Table (A).First_Sdep .. ALIs.Table (A).Last_Sdep
loop
if Sdep.Table (D).Sfile = File_Name then
return False;
end if;
end loop;
if Full_Source_Name (File_Name) /= No_File then
Spec_File_Name := File_Name;
return True;
end if;
return False;
end New_Spec;
-- Start of processing for First_New_Spec
begin
U_Chk : for U in
ALIs.Table (A).First_Unit .. ALIs.Table (A).Last_Unit
loop
exit U_Chk when Units.Table (U).Utype = Is_Body_Only
and then New_Spec (Units.Table (U).Uname);
for W in Units.Table (U).First_With
..
Units.Table (U).Last_With
loop
exit U_Chk when
Withs.Table (W).Afile /= No_File
and then New_Spec (Withs.Table (W).Uname);
end loop;
end loop U_Chk;
return Spec_File_Name;
end First_New_Spec;
---------------------------------
-- Data declarations for Check --
---------------------------------
Full_Obj_File : File_Name_Type;
-- Full name of the object file corresponding to Lib_File
Lib_Stamp : Time_Stamp_Type;
-- Time stamp of the current ada library file
Obj_Stamp : Time_Stamp_Type;
-- Time stamp of the current object file
Modified_Source : File_Name_Type;
-- The first source in Lib_File whose current time stamp differs from
-- that stored in Lib_File.
New_Spec : File_Name_Type;
-- If Lib_File contains in its W (with) section a body (for a
-- subprogram) for which there exists a spec, and the spec did not
-- appear in the Sdep section of Lib_File, New_Spec contains the file
-- name of this new spec.
Source_Name : File_Name_Type;
Text : Text_Buffer_Ptr;
First_Arg : Arg_Id;
-- Index of the first argument in Args.Table for a given unit
Last_Arg : Arg_Id;
-- Index of the last argument in Args.Table for a given unit
Arg : Arg_Id := Arg_Id'First;
-- Current index in Args.Table for a given unit (init to stop warning)
Number_Of_Switches : Natural;
-- Number of switches recorded for a given unit
Prev_Switch : String_Access;
-- Previous switch processed
Switch_Found : Boolean;
-- True if a given switch has been found
begin
pragma Assert (Lib_File /= No_File);
-- If ALI file is read-only, temporarily set Check_Object_Consistency to
-- False. We don't care if the object file is not there (presumably a
-- library will be used for linking.)
if Read_Only then
declare
Saved_Check_Object_Consistency : constant Boolean :=
Check_Object_Consistency;
begin
Check_Object_Consistency := False;
Text := Read_Library_Info_From_Full (Full_Lib_File, Lib_File_Attr);
Check_Object_Consistency := Saved_Check_Object_Consistency;
end;
else
Text := Read_Library_Info_From_Full (Full_Lib_File, Lib_File_Attr);
end if;
Full_Obj_File := Full_Object_File_Name;
Lib_Stamp := Current_Library_File_Stamp;
Obj_Stamp := Current_Object_File_Stamp;
if Full_Lib_File = No_File then
Verbose_Msg
(Lib_File,
"being checked ...",
Prefix => " ",
Minimum_Verbosity => Opt.Medium);
else
Verbose_Msg
(Full_Lib_File,
"being checked ...",
Prefix => " ",
Minimum_Verbosity => Opt.Medium);
end if;
ALI := No_ALI_Id;
O_File := Full_Obj_File;
O_Stamp := Obj_Stamp;
if Text = null then
if Full_Lib_File = No_File then
Verbose_Msg (Lib_File, "missing.");
elsif Obj_Stamp (Obj_Stamp'First) = ' ' then
Verbose_Msg (Full_Obj_File, "missing.");
else
Verbose_Msg
(Full_Lib_File, "(" & String (Lib_Stamp) & ") newer than",
Full_Obj_File, "(" & String (Obj_Stamp) & ")");
end if;
else
ALI := Scan_ALI (Lib_File, Text, Err => True);
Free (Text);
if ALI = No_ALI_Id then
Verbose_Msg (Full_Lib_File, "incorrectly formatted ALI file");
return;
elsif ALIs.Table (ALI).Ver (1 .. ALIs.Table (ALI).Ver_Len) /=
Verbose_Library_Version
then
Verbose_Msg (Full_Lib_File, "compiled with old GNAT version");
ALI := No_ALI_Id;
return;
end if;
-- Don't take ALI file into account if it was generated with errors
if ALIs.Table (ALI).Compile_Errors then
Verbose_Msg (Full_Lib_File, "had errors, must be recompiled");
ALI := No_ALI_Id;
return;
end if;
-- Don't take ALI file into account if no object was generated
if Operating_Mode /= Check_Semantics
and then ALIs.Table (ALI).No_Object
then
Verbose_Msg (Full_Lib_File, "has no corresponding object");
ALI := No_ALI_Id;
return;
end if;
-- When compiling with -gnatc, don't take ALI file into account if
-- it has not been generated for the current source, for example if
-- it has been generated for the spec, but we are compiling the body.
if Operating_Mode = Check_Semantics then
declare
File_Name : String := Get_Name_String (Source_File);
OK : Boolean := False;
begin
-- In the ALI file, the source file names are in canonical case
Canonical_Case_File_Name (File_Name);
for U in ALIs.Table (ALI).First_Unit ..
ALIs.Table (ALI).Last_Unit
loop
OK := Get_Name_String (Units.Table (U).Sfile) = File_Name;
exit when OK;
end loop;
if not OK then
Verbose_Msg
(Full_Lib_File, "not generated for the same source");
ALI := No_ALI_Id;
return;
end if;
end;
end if;
-- Check for matching compiler switches if needed
if Check_Switches then
-- First, collect all the switches
Collect_Arguments (The_Args);
Prev_Switch := Dummy_Switch;
Get_Name_String (ALIs.Table (ALI).Sfile);
Switches_To_Check.Set_Last (0);
for J in 1 .. Last_Argument loop
-- Skip -c, -I and -o switches
if Arguments (J) (1) = '-'
and then Arguments (J) (2) /= 'c'
and then Arguments (J) (2) /= 'o'
and then Arguments (J) (2) /= 'I'
then
Normalize_Compiler_Switches
(Arguments (J).all,
Normalized_Switches,
Last_Norm_Switch);
for K in 1 .. Last_Norm_Switch loop
Switches_To_Check.Increment_Last;
Switches_To_Check.Table (Switches_To_Check.Last) :=
Normalized_Switches (K);
end loop;
end if;
end loop;
First_Arg := Units.Table (ALIs.Table (ALI).First_Unit).First_Arg;
Last_Arg := Units.Table (ALIs.Table (ALI).First_Unit).Last_Arg;
for J in 1 .. Switches_To_Check.Last loop
-- Comparing switches is delicate because gcc reorders a number
-- of switches, according to lang-specs.h, but gnatmake doesn't
-- have sufficient knowledge to perform the same reordering.
-- Instead, we ignore orders between different "first letter"
-- switches, but keep orders between same switches, e.g -O -O2
-- is different than -O2 -O, but -g -O is equivalent to -O -g.
if Switches_To_Check.Table (J) (2) /= Prev_Switch (2) or else
(Prev_Switch'Length >= 6 and then
Prev_Switch (2 .. 5) = "gnat" and then
Switches_To_Check.Table (J)'Length >= 6 and then
Switches_To_Check.Table (J) (2 .. 5) = "gnat" and then
Prev_Switch (6) /= Switches_To_Check.Table (J) (6))
then
Prev_Switch := Switches_To_Check.Table (J);
Arg := First_Arg;
end if;
Switch_Found := False;
for K in Arg .. Last_Arg loop
if
Switches_To_Check.Table (J).all = Args.Table (K).all
then
Arg := K + 1;
Switch_Found := True;
exit;
end if;
end loop;
if not Switch_Found then
if Verbose_Mode then
Verbose_Msg (ALIs.Table (ALI).Sfile,
"switch mismatch """ &
Switches_To_Check.Table (J).all & '"');
end if;
ALI := No_ALI_Id;
return;
end if;
end loop;
Number_Of_Switches := Natural (Last_Arg - First_Arg + 1);
-- Do not count the multilib switches reinstated by the compiler
-- according to the lang-specs.h.settings.
for K in First_Arg .. Last_Arg loop
if Args.Table (K).all = "-mrtp" then
Number_Of_Switches := Number_Of_Switches - 1;
end if;
end loop;
if Switches_To_Check.Last /= Number_Of_Switches then
if Verbose_Mode then
Verbose_Msg (ALIs.Table (ALI).Sfile,
"different number of switches");
for K in First_Arg .. Last_Arg loop
Write_Str (Args.Table (K).all);
Write_Char (' ');
end loop;
Write_Eol;
for J in 1 .. Switches_To_Check.Last loop
Write_Str (Switches_To_Check.Table (J).all);
Write_Char (' ');
end loop;
Write_Eol;
end if;
ALI := No_ALI_Id;
return;
end if;
end if;
-- Get the source files and their message digests. Note that some
-- sources may be missing if ALI is out-of-date.
Set_Source_Table (ALI);
Modified_Source := Time_Stamp_Mismatch (ALI, Read_Only);
-- To avoid using too much memory when switch -m is used, free the
-- memory allocated for the source file when computing the checksum.
if Minimal_Recompilation then
Sinput.Clear_Source_File_Table;
end if;
if Modified_Source /= No_File then
ALI := No_ALI_Id;
if Verbose_Mode then
Source_Name := Full_Source_Name (Modified_Source);
if Source_Name /= No_File then
Verbose_Msg (Source_Name, "time stamp mismatch");
else
Verbose_Msg (Modified_Source, "missing");
end if;
end if;
else
New_Spec := First_New_Spec (ALI);
if New_Spec /= No_File then
ALI := No_ALI_Id;
if Verbose_Mode then
Source_Name := Full_Source_Name (New_Spec);
if Source_Name /= No_File then
Verbose_Msg (Source_Name, "new spec");
else
Verbose_Msg (New_Spec, "old spec missing");
end if;
end if;
end if;
end if;
end if;
end Check;
------------------------
-- Check_For_S_Switch --
------------------------
procedure Check_For_S_Switch is
begin
-- By default, we generate an object file
Output_Is_Object := True;
for Arg in 1 .. Last_Argument loop
if Arguments (Arg).all = "-S" then
Output_Is_Object := False;
elsif Arguments (Arg).all = "-c" then
Output_Is_Object := True;
end if;
end loop;
end Check_For_S_Switch;
--------------------------
-- Check_Linker_Options --
--------------------------
procedure Check_Linker_Options
(E_Stamp : Time_Stamp_Type;
O_File : out File_Name_Type;
O_Stamp : out Time_Stamp_Type)
is
procedure Check_File (File : File_Name_Type);
-- Update O_File and O_Stamp if the given file is younger than E_Stamp
-- and O_Stamp, or if O_File is No_File and File does not exist.
function Get_Library_File (Name : String) return File_Name_Type;
-- Return the full file name including path of a library based
-- on the name specified with the -l linker option, using the
-- Ada object path. Return No_File if no such file can be found.
type Char_Array is array (Natural) of Character;
type Char_Array_Access is access constant Char_Array;
Template : Char_Array_Access;
pragma Import (C, Template, "__gnat_library_template");
----------------
-- Check_File --
----------------
procedure Check_File (File : File_Name_Type) is
Stamp : Time_Stamp_Type;
Name : File_Name_Type := File;
begin
Get_Name_String (Name);
-- Remove any trailing NUL characters
while Name_Len >= Name_Buffer'First
and then Name_Buffer (Name_Len) = NUL
loop
Name_Len := Name_Len - 1;
end loop;
if Name_Len = 0 then
return;
elsif Name_Buffer (1) = '-' then
-- Do not check if File is a switch other than "-l"
if Name_Buffer (2) /= 'l' then
return;
end if;
-- The argument is a library switch, get actual name. It
-- is necessary to make a copy of the relevant part of
-- Name_Buffer as Get_Library_Name uses Name_Buffer as well.
declare
Base_Name : constant String := Name_Buffer (3 .. Name_Len);
begin
Name := Get_Library_File (Base_Name);
end;
if Name = No_File then
return;
end if;
end if;
Stamp := File_Stamp (Name);
-- Find the youngest object file that is younger than the
-- executable. If no such file exist, record the first object
-- file that is not found.
if (O_Stamp < Stamp and then E_Stamp < Stamp)
or else (O_File = No_File and then Stamp (Stamp'First) = ' ')
then
O_Stamp := Stamp;
O_File := Name;
-- Strip the trailing NUL if present
Get_Name_String (O_File);
if Name_Buffer (Name_Len) = NUL then
Name_Len := Name_Len - 1;
O_File := Name_Find;
end if;
end if;
end Check_File;
----------------------
-- Get_Library_Name --
----------------------
-- See comments in a-adaint.c about template syntax
function Get_Library_File (Name : String) return File_Name_Type is
File : File_Name_Type := No_File;
begin
Name_Len := 0;
for Ptr in Template'Range loop
case Template (Ptr) is
when '*' =>
Add_Str_To_Name_Buffer (Name);
when ';' =>
File := Full_Lib_File_Name (Name_Find);
exit when File /= No_File;
Name_Len := 0;
when NUL =>
exit;
when others =>
Add_Char_To_Name_Buffer (Template (Ptr));
end case;
end loop;
-- The for loop exited because the end of the template
-- was reached. File contains the last possible file name
-- for the library.
if File = No_File and then Name_Len > 0 then
File := Full_Lib_File_Name (Name_Find);
end if;
return File;
end Get_Library_File;
-- Start of processing for Check_Linker_Options
begin
O_File := No_File;
O_Stamp := (others => ' ');
-- Process linker options from the ALI files
for Opt in 1 .. Linker_Options.Last loop
Check_File (File_Name_Type (Linker_Options.Table (Opt).Name));
end loop;
-- Process options given on the command line
for Opt in Linker_Switches.First .. Linker_Switches.Last loop
-- Check if the previous Opt has one of the two switches
-- that take an extra parameter. (See GCC manual.)
if Opt = Linker_Switches.First
or else (Linker_Switches.Table (Opt - 1).all /= "-u"
and then
Linker_Switches.Table (Opt - 1).all /= "-Xlinker"
and then
Linker_Switches.Table (Opt - 1).all /= "-L")
then
Name_Len := 0;
Add_Str_To_Name_Buffer (Linker_Switches.Table (Opt).all);
Check_File (Name_Find);
end if;
end loop;
end Check_Linker_Options;
-----------------------
-- Collect_Arguments --
-----------------------
procedure Collect_Arguments (Args : Argument_List) is
begin
Last_Argument := 0;
Add_Arguments (Args);
-- Set Output_Is_Object, depending if there is a -S switch.
-- If the bind step is not performed, and there is a -S switch,
-- then we will not check for a valid object file.
Check_For_S_Switch;
end Collect_Arguments;
---------------------
-- Compile_Sources --
---------------------
procedure Compile_Sources
(Main_Source : File_Name_Type;
Args : Argument_List;
First_Compiled_File : out File_Name_Type;
Most_Recent_Obj_File : out File_Name_Type;
Most_Recent_Obj_Stamp : out Time_Stamp_Type;
Main_Unit : out Boolean;
Compilation_Failures : out Natural;
Main_Index : Int := 0;
Check_Readonly_Files : Boolean := False;
Do_Not_Execute : Boolean := False;
Force_Compilations : Boolean := False;
Keep_Going : Boolean := False;
In_Place_Mode : Boolean := False;
Initialize_ALI_Data : Boolean := True;
Max_Process : Positive := 1)
is
Mfile : Natural := No_Mapping_File;
Mapping_File_Arg : String_Access;
-- Info on the mapping file
Need_To_Check_Standard_Library : Boolean :=
(Check_Readonly_Files or Must_Compile)
and not Unique_Compile;
procedure Add_Process
(Pid : Process_Id;
Sfile : File_Name_Type;
Afile : File_Name_Type;
Uname : Unit_Name_Type;
Full_Lib_File : File_Name_Type;
Lib_File_Attr : File_Attributes;
Mfile : Natural := No_Mapping_File);
-- Adds process Pid to the current list of outstanding compilation
-- processes and record the full name of the source file Sfile that
-- we are compiling, the name of its library file Afile and the
-- name of its unit Uname. If Mfile is not equal to No_Mapping_File,
-- it is the index of the mapping file used during compilation in the
-- array The_Mapping_File_Names.
procedure Await_Compile
(Data : out Compilation_Data;
OK : out Boolean);
-- Awaits that an outstanding compilation process terminates. When it
-- does set Data to the information registered for the corresponding
-- call to Add_Process. Note that this time stamp can be used to check
-- whether the compilation did generate an object file. OK is set to
-- True if the compilation succeeded. Data could be No_Compilation_Data
-- if there was no compilation to wait for.
function Bad_Compilation_Count return Natural;
-- Returns the number of compilation failures
procedure Check_Standard_Library;
-- Check if s-stalib.adb needs to be compiled
procedure Collect_Arguments_And_Compile
(Full_Source_File : File_Name_Type;
Lib_File : File_Name_Type;
Source_Index : Int;
Pid : out Process_Id;
Process_Created : out Boolean);
-- Collect arguments from project file (if any) and compile. If no
-- compilation was attempted, Processed_Created is set to False, and the
-- value of Pid is unknown.
function Compile
(S : File_Name_Type;
L : File_Name_Type;
Source_Index : Int;
Args : Argument_List) return Process_Id;
-- Compiles S using Args. If S is a GNAT predefined source "-gnatg" is
-- added to Args. Non blocking call. L corresponds to the expected
-- library file name. Process_Id of the process spawned to execute the
-- compilation.
package Good_ALI is new Table.Table (
Table_Component_Type => ALI_Id,
Table_Index_Type => Natural,
Table_Low_Bound => 1,
Table_Initial => 50,
Table_Increment => 100,
Table_Name => "Make.Good_ALI");
-- Contains the set of valid ALI files that have not yet been scanned
function Good_ALI_Present return Boolean;
-- Returns True if any ALI file was recorded in the previous set
procedure Get_Mapping_File;
-- Get a mapping file name. If there is one to be reused, reuse it.
-- Otherwise, create a new mapping file.
function Get_Next_Good_ALI return ALI_Id;
-- Returns the next good ALI_Id record
procedure Record_Failure
(File : File_Name_Type;
Unit : Unit_Name_Type;
Found : Boolean := True);
-- Records in the previous table that the compilation for File failed.
-- If Found is False then the compilation of File failed because we
-- could not find it. Records also Unit when possible.
procedure Record_Good_ALI (A : ALI_Id);
-- Records in the previous set the Id of an ALI file
function Must_Exit_Because_Of_Error return Boolean;
-- Return True if there were errors and the user decided to exit in such
-- a case. This waits for any outstanding compilation.
function Start_Compile_If_Possible (Args : Argument_List) return Boolean;
-- Check if there is more work that we can do (i.e. the Queue is non
-- empty). If there is, do it only if we have not yet used up all the
-- available processes.
-- Returns True if we should exit the main loop
procedure Wait_For_Available_Slot;
-- Check if we should wait for a compilation to finish. This is the case
-- if all the available processes are busy compiling sources or there is
-- nothing else to do (that is the Q is empty and there are no good ALIs
-- to process).
procedure Fill_Queue_From_ALI_Files;
-- Check if we recorded good ALI files. If yes process them now in the
-- order in which they have been recorded. There are two occasions in
-- which we record good ali files. The first is in phase 1 when, after
-- scanning an existing ALI file we realize it is up-to-date, the second
-- instance is after a successful compilation.
-----------------
-- Add_Process --
-----------------
procedure Add_Process
(Pid : Process_Id;
Sfile : File_Name_Type;
Afile : File_Name_Type;
Uname : Unit_Name_Type;
Full_Lib_File : File_Name_Type;
Lib_File_Attr : File_Attributes;
Mfile : Natural := No_Mapping_File)
is
OC1 : constant Positive := Outstanding_Compiles + 1;
begin
pragma Assert (OC1 <= Max_Process);
pragma Assert (Pid /= Invalid_Pid);
Running_Compile (OC1) :=
(Pid => Pid,
Full_Source_File => Sfile,
Lib_File => Afile,
Full_Lib_File => Full_Lib_File,
Lib_File_Attr => Lib_File_Attr,
Source_Unit => Uname,
Mapping_File => Mfile);
Outstanding_Compiles := OC1;
end Add_Process;
--------------------
-- Await_Compile --
-------------------
procedure Await_Compile
(Data : out Compilation_Data;
OK : out Boolean)
is
Pid : Process_Id;
begin
pragma Assert (Outstanding_Compiles > 0);
Data := No_Compilation_Data;
OK := False;
Wait_Process (Pid, OK);
if Pid = Invalid_Pid then
return;
end if;
-- Look into the running compilation processes for this PID
for J in Running_Compile'First .. Outstanding_Compiles loop
if Pid = Running_Compile (J).Pid then
Data := Running_Compile (J);
-- If a mapping file was used by this compilation, get its file
-- name for reuse by a subsequent compilation.
if Running_Compile (J).Mapping_File /= No_Mapping_File then
The_Mapping_Files.Last_Free_Indexes :=
The_Mapping_Files.Last_Free_Indexes + 1;
The_Mapping_Files.Free_Mapping_File_Indexes
(The_Mapping_Files.Last_Free_Indexes) :=
Running_Compile (J).Mapping_File;
end if;
-- To actually remove this Pid and related info from
-- Running_Compile replace its entry with the last valid
-- entry in Running_Compile.
if J = Outstanding_Compiles then
null;
else
Running_Compile (J) :=
Running_Compile (Outstanding_Compiles);
end if;
Outstanding_Compiles := Outstanding_Compiles - 1;
exit;
end if;
end loop;
-- If the PID was not found, return with OK set to False
if Data = No_Compilation_Data then
OK := False;
end if;
end Await_Compile;
---------------------------
-- Bad_Compilation_Count --
---------------------------
function Bad_Compilation_Count return Natural is
begin
return Bad_Compilation.Last - Bad_Compilation.First + 1;
end Bad_Compilation_Count;
----------------------------
-- Check_Standard_Library --
----------------------------
procedure Check_Standard_Library is
begin
Need_To_Check_Standard_Library := False;
Name_Len := 0;
if not Targparm.Suppress_Standard_Library_On_Target then
Add_Str_To_Name_Buffer (Standard_Library_Package_Body_Name);
else
Add_Str_To_Name_Buffer (System_Package_Spec_Name);
end if;
declare
Add_It : Boolean := True;
Sfile : File_Name_Type;
begin
Sfile := Name_Enter;
-- If we have a special runtime, we add the standard library only
-- if we can find it.
if RTS_Switch then
Add_It := Full_Source_Name (Sfile) /= No_File;
end if;
if Add_It then
if not Queue.Insert
((File => Sfile,
Unit => No_Unit_Name,
Index => 0))
then
if Is_In_Obsoleted (Sfile) then
Executable_Obsolete := True;
end if;
end if;
end if;
end;
end Check_Standard_Library;
-----------------------------------
-- Collect_Arguments_And_Compile --
-----------------------------------
procedure Collect_Arguments_And_Compile
(Full_Source_File : File_Name_Type;
Lib_File : File_Name_Type;
Source_Index : Int;
Pid : out Process_Id;
Process_Created : out Boolean) is
begin
Process_Created := False;
-- If we use mapping file (-P or -C switches), then get one
if Create_Mapping_File then
Get_Mapping_File;
end if;
Pid :=
Compile
(S => Full_Source_File,
L => Lib_File,
Source_Index => Source_Index,
Args => Arguments (1 .. Last_Argument));
Process_Created := True;
end Collect_Arguments_And_Compile;
-------------
-- Compile --
-------------
function Compile
(S : File_Name_Type;
L : File_Name_Type;
Source_Index : Int;
Args : Argument_List) return Process_Id
is
Comp_Args : Argument_List (Args'First .. Args'Last + 10);
Comp_Next : Integer := Args'First;
Comp_Last : Integer;
Arg_Index : Integer;
function Ada_File_Name (Name : File_Name_Type) return Boolean;
-- Returns True if Name is the name of an ada source file
-- (i.e. suffix is .ads or .adb)
-------------------
-- Ada_File_Name --
-------------------
function Ada_File_Name (Name : File_Name_Type) return Boolean is
begin
Get_Name_String (Name);
return
Name_Len > 4
and then Name_Buffer (Name_Len - 3 .. Name_Len - 1) = ".ad"
and then (Name_Buffer (Name_Len) = 'b'
or else
Name_Buffer (Name_Len) = 's');
end Ada_File_Name;
-- Start of processing for Compile
begin
Enter_Into_Obsoleted (S);
-- By default, Syntax_Only is False
Syntax_Only := False;
for J in Args'Range loop
if Args (J).all = "-gnats" then
-- If we compile with -gnats, the bind step and the link step
-- are inhibited. Also, we set Syntax_Only to True, so that
-- we don't fail when we don't find the ALI file, after
-- compilation.
Do_Bind_Step := False;
Do_Link_Step := False;
Syntax_Only := True;
elsif Args (J).all = "-gnatc" then
-- If we compile with -gnatc, the bind step and the link step
-- are inhibited. We set Syntax_Only to False for the case when
-- -gnats was previously specified.
Do_Bind_Step := False;
Do_Link_Step := False;
Syntax_Only := False;
end if;
end loop;
Comp_Args (Comp_Next) := new String'("-gnatea");
Comp_Next := Comp_Next + 1;
Comp_Args (Comp_Next) := Comp_Flag;
Comp_Next := Comp_Next + 1;
-- Optimize the simple case where the gcc command line looks like
-- gcc -c -I. ... -I- file.adb
-- into
-- gcc -c ... file.adb
if Args (Args'First).all = "-I" & Normalized_CWD
and then Args (Args'Last).all = "-I-"
and then S = Strip_Directory (S)
then
Comp_Last := Comp_Next + Args'Length - 3;
Arg_Index := Args'First + 1;
else
Comp_Last := Comp_Next + Args'Length - 1;
Arg_Index := Args'First;
end if;
-- Make a deep copy of the arguments, because Normalize_Arguments
-- may deallocate some arguments. Also strip target specific -mxxx
-- switches in CodePeer mode.
declare
Index : Natural;
Last : constant Natural := Comp_Last;
begin
Index := Comp_Next;
for J in Comp_Next .. Last loop
declare
Str : String renames Args (Arg_Index).all;
begin
if CodePeer_Mode
and then Str'Length > 2
and then Str (Str'First .. Str'First + 1) = "-m"
then
Comp_Last := Comp_Last - 1;
else
Comp_Args (Index) := new String'(Str);
Index := Index + 1;
end if;
end;
Arg_Index := Arg_Index + 1;
end loop;
end;
-- Set -gnatg for predefined files (for this purpose the renamings
-- such as Text_IO do not count as predefined). Note that we strip
-- the directory name from the source file name because the call to
-- Fname.Is_Predefined_File_Name cannot deal with directory prefixes.
declare
Fname : constant File_Name_Type := Strip_Directory (S);
begin
if Is_Predefined_File_Name
(Fname, Renamings_Included => False)
then
if Check_Readonly_Files or else Must_Compile then
Comp_Args (Comp_Args'First + 2 .. Comp_Last + 1) :=
Comp_Args (Comp_Args'First + 1 .. Comp_Last);
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Args'First + 1) := GNAT_Flag;
else
Make_Failed
("not allowed to compile """ &
Get_Name_String (Fname) &
"""; use -a switch, or use the compiler directly with "
& "the ""-gnatg"" switch");
end if;
end if;
end;
-- Now check if the file name has one of the suffixes familiar to
-- the gcc driver. If this is not the case then add the ada flag
-- "-x ada".
-- Append systematically "-x adascil" in CodePeer mode instead, to
-- force the use of gnat1scil instead of gnat1.
if CodePeer_Mode then
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := Ada_Flag_1;
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := AdaSCIL_Flag;
elsif not Ada_File_Name (S) then
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := Ada_Flag_1;
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := Ada_Flag_2;
end if;
if Source_Index /= 0 then
declare
Num : constant String := Source_Index'Img;
begin
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) :=
new String'("-gnateI" & Num (Num'First + 1 .. Num'Last));
end;
end if;
if Source_Index /= 0
or else L /= Strip_Directory (L)
or else Object_Directory_Path /= null
then
-- Build -o argument
Get_Name_String (L);
for J in reverse 1 .. Name_Len loop
if Name_Buffer (J) = '.' then
Name_Len := J + Object_Suffix'Length - 1;
Name_Buffer (J .. Name_Len) := Object_Suffix;
exit;
end if;
end loop;
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := Output_Flag;
Comp_Last := Comp_Last + 1;
-- If an object directory was specified, prepend the object file
-- name with this object directory.
if Object_Directory_Path /= null then
Comp_Args (Comp_Last) :=
new String'(Object_Directory_Path.all &
Name_Buffer (1 .. Name_Len));
else
Comp_Args (Comp_Last) :=
new String'(Name_Buffer (1 .. Name_Len));
end if;
end if;
if Create_Mapping_File and then Mapping_File_Arg /= null then
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := new String'(Mapping_File_Arg.all);
end if;
Get_Name_String (S);
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := new String'(Name_Buffer (1 .. Name_Len));
-- Change to object directory of the project file, if necessary
GNAT.OS_Lib.Normalize_Arguments (Comp_Args (Args'First .. Comp_Last));
Comp_Last := Comp_Last + 1;
Comp_Args (Comp_Last) := new String'("-gnatez");
Display (Gcc.all, Comp_Args (Args'First .. Comp_Last));
if Gcc_Path = null then
Make_Failed ("error, unable to locate " & Gcc.all);
end if;
return
GNAT.OS_Lib.Non_Blocking_Spawn
(Gcc_Path.all, Comp_Args (Args'First .. Comp_Last));
end Compile;
-------------------------------
-- Fill_Queue_From_ALI_Files --
-------------------------------
procedure Fill_Queue_From_ALI_Files is
ALI : ALI_Id;
Source_Index : Int;
Sfile : File_Name_Type;
begin
while Good_ALI_Present loop
ALI := Get_Next_Good_ALI;
Source_Index := Unit_Index_Of (ALIs.Table (ALI).Afile);
-- If we are processing the library file corresponding to the
-- main source file check if this source can be a main unit.
if ALIs.Table (ALI).Sfile = Main_Source
and then Source_Index = Main_Index
then
Main_Unit := ALIs.Table (ALI).Main_Program /= None;
end if;
-- The following adds the standard library (s-stalib) to the list
-- of files to be handled by gnatmake: this file and any files it
-- depends on are always included in every bind, even if they are
-- not in the explicit dependency list. Of course, it is not added
-- if Suppress_Standard_Library is True.
-- However, to avoid annoying output about s-stalib.ali being read
-- only, when "-v" is used, we add the standard library only when
-- "-a" is used.
if Need_To_Check_Standard_Library then
Check_Standard_Library;
end if;
-- Now insert in the Q the unmarked source files (i.e. those which
-- have never been inserted in the Q and hence never considered).
-- Only do that if Unique_Compile is False.
if not Unique_Compile then
for J in
ALIs.Table (ALI).First_Unit .. ALIs.Table (ALI).Last_Unit
loop
for K in
Units.Table (J).First_With .. Units.Table (J).Last_With
loop
Sfile := Withs.Table (K).Sfile;
Dependencies.Append ((ALIs.Table (ALI).Sfile, Sfile));
if Is_In_Obsoleted (Sfile) then
Executable_Obsolete := True;
end if;
if Sfile = No_File then
Debug_Msg ("Skipping generic:", Withs.Table (K).Uname);
else
Source_Index := Unit_Index_Of (Withs.Table (K).Afile);
if not (Check_Readonly_Files or Must_Compile)
and then Is_Internal_File_Name (Sfile, False)
then
Debug_Msg ("Skipping internal file:", Sfile);
else
Queue.Insert
((File => Sfile,
Unit => Withs.Table (K).Uname,
Index => Source_Index));
end if;
end if;
end loop;
end loop;
end if;
end loop;
end Fill_Queue_From_ALI_Files;
----------------------
-- Get_Mapping_File --
----------------------
procedure Get_Mapping_File is
begin
-- If there is a mapping file ready to be reused, reuse it
if The_Mapping_Files.Last_Free_Indexes > 0 then
Mfile :=
The_Mapping_Files.Free_Mapping_File_Indexes
(The_Mapping_Files.Last_Free_Indexes);
The_Mapping_Files.Last_Free_Indexes :=
The_Mapping_Files.Last_Free_Indexes - 1;
-- Otherwise, create and initialize a new one
else
Init_Mapping_File (File_Index => Mfile);
end if;
-- Put the name in the mapping file argument for the invocation
-- of the compiler.
Free (Mapping_File_Arg);
Mapping_File_Arg :=
new String'
("-gnatem=" &
Get_Name_String
(The_Mapping_Files.Mapping_File_Names (Mfile)));
end Get_Mapping_File;
-----------------------
-- Get_Next_Good_ALI --
-----------------------
function Get_Next_Good_ALI return ALI_Id is
ALIP : ALI_Id;
begin
pragma Assert (Good_ALI_Present);
ALIP := Good_ALI.Table (Good_ALI.Last);
Good_ALI.Decrement_Last;
return ALIP;
end Get_Next_Good_ALI;
----------------------
-- Good_ALI_Present --
----------------------
function Good_ALI_Present return Boolean is
begin
return Good_ALI.First <= Good_ALI.Last;
end Good_ALI_Present;
--------------------------------
-- Must_Exit_Because_Of_Error --
--------------------------------
function Must_Exit_Because_Of_Error return Boolean is
Data : Compilation_Data;
Success : Boolean;
begin
if Bad_Compilation_Count > 0 and then not Keep_Going then
while Outstanding_Compiles > 0 loop
Await_Compile (Data, Success);
if not Success then
Record_Failure (Data.Full_Source_File, Data.Source_Unit);
end if;
end loop;
return True;
end if;
return False;
end Must_Exit_Because_Of_Error;
--------------------
-- Record_Failure --
--------------------
procedure Record_Failure
(File : File_Name_Type;
Unit : Unit_Name_Type;
Found : Boolean := True)
is
begin
Bad_Compilation.Increment_Last;
Bad_Compilation.Table (Bad_Compilation.Last) := (File, Unit, Found);
end Record_Failure;
---------------------
-- Record_Good_ALI --
---------------------
procedure Record_Good_ALI (A : ALI_Id) is
begin
Good_ALI.Increment_Last;
Good_ALI.Table (Good_ALI.Last) := A;
end Record_Good_ALI;
-------------------------------
-- Start_Compile_If_Possible --
-------------------------------
function Start_Compile_If_Possible
(Args : Argument_List) return Boolean
is
In_Lib_Dir : Boolean;
Need_To_Compile : Boolean;
Pid : Process_Id := Invalid_Pid;
Process_Created : Boolean;
Source : Queue.Source_Info;
Full_Source_File : File_Name_Type := No_File;
Source_File_Attr : aliased File_Attributes;
-- The full name of the source file and its attributes (size, ...)
Lib_File : File_Name_Type;
Full_Lib_File : File_Name_Type := No_File;
Lib_File_Attr : aliased File_Attributes;
Read_Only : Boolean := False;
ALI : ALI_Id := No_ALI_Id;
-- The ALI file and its attributes (size, stamp, ...)
Obj_File : File_Name_Type := No_File;
Obj_Stamp : Time_Stamp_Type;
-- The object file
Found : Boolean;
begin
if not Queue.Is_Empty and then
Outstanding_Compiles < Max_Process
then
Queue.Extract (Found, Source);
Osint.Full_Source_Name
(Source.File,
Full_File => Full_Source_File,
Attr => Source_File_Attr'Unchecked_Access);
Lib_File := Osint.Lib_File_Name (Source.File, Source.Index);
Osint.Full_Lib_File_Name
(Lib_File,
Lib_File => Full_Lib_File,
Attr => Lib_File_Attr);
-- If source has already been compiled, executable is obsolete
if Is_In_Obsoleted (Source.File) then
Executable_Obsolete := True;
end if;
In_Lib_Dir := Full_Lib_File /= No_File
and then In_Ada_Lib_Dir (Full_Lib_File);
-- Since the following requires a system call, we precompute it
-- when needed.
if not In_Lib_Dir then
if Full_Lib_File /= No_File
and then not (Check_Readonly_Files or else Must_Compile)
then
Get_Name_String (Full_Lib_File);
Name_Buffer (Name_Len + 1) := ASCII.NUL;
Read_Only := not Is_Writable_File
(Name_Buffer'Address, Lib_File_Attr'Unchecked_Access);
else
Read_Only := False;
end if;
end if;
-- If the library file is an Ada library skip it
if In_Lib_Dir then
Verbose_Msg
(Lib_File,
"is in an Ada library",
Prefix => " ",
Minimum_Verbosity => Opt.High);
-- If the library file is a read-only library skip it, but only
-- if, when using project files, this library file is in the
-- right object directory (a read-only ALI file in the object
-- directory of a project being extended must not be skipped).
elsif Read_Only then
Verbose_Msg
(Lib_File,
"is a read-only library",
Prefix => " ",
Minimum_Verbosity => Opt.High);
-- The source file that we are checking cannot be located
elsif Full_Source_File = No_File then
Record_Failure (Source.File, Source.Unit, False);
-- Source and library files can be located but are internal
-- files.
elsif not (Check_Readonly_Files or else Must_Compile)
and then Full_Lib_File /= No_File
and then Is_Internal_File_Name (Source.File, False)
then
if Force_Compilations then
Fail
("not allowed to compile """ &
Get_Name_String (Source.File) &
"""; use -a switch, or use the compiler directly with "
& "the ""-gnatg"" switch");
end if;
Verbose_Msg
(Lib_File,
"is an internal library",
Prefix => " ",
Minimum_Verbosity => Opt.High);
-- The source file that we are checking can be located
else
Collect_Arguments (Args);
-- Don't waste any time if we have to recompile anyway
Obj_Stamp := Empty_Time_Stamp;
Need_To_Compile := Force_Compilations;
if not Force_Compilations then
Check (Source_File => Source.File,
The_Args => Args,
Lib_File => Lib_File,
Full_Lib_File => Full_Lib_File,
Lib_File_Attr => Lib_File_Attr'Unchecked_Access,
Read_Only => Read_Only,
ALI => ALI,
O_File => Obj_File,
O_Stamp => Obj_Stamp);
Need_To_Compile := (ALI = No_ALI_Id);
end if;
if not Need_To_Compile then
-- The ALI file is up-to-date; record its Id
Record_Good_ALI (ALI);
-- Record the time stamp of the most recent object
-- file as long as no (re)compilations are needed.
if First_Compiled_File = No_File
and then (Most_Recent_Obj_File = No_File
or else Obj_Stamp > Most_Recent_Obj_Stamp)
then
Most_Recent_Obj_File := Obj_File;
Most_Recent_Obj_Stamp := Obj_Stamp;
end if;
else
-- Is this the first file we have to compile?
if First_Compiled_File = No_File then
First_Compiled_File := Full_Source_File;
Most_Recent_Obj_File := No_File;
if Do_Not_Execute then
-- Exit the main loop
return True;
end if;
end if;
-- Compute where the ALI file must be generated in
-- In_Place_Mode (this does not require to know the
-- location of the object directory).
if In_Place_Mode then
if Full_Lib_File = No_File then
-- If the library file was not found, then save
-- the library file near the source file.
Lib_File :=
Osint.Lib_File_Name
(Full_Source_File, Source.Index);
Full_Lib_File := Lib_File;
else
-- If the library file was found, then save the
-- library file in the same place.
Lib_File := Full_Lib_File;
end if;
end if;
-- Start the compilation and record it. We can do this
-- because there is at least one free process. This might
-- change the current directory.
Collect_Arguments_And_Compile
(Full_Source_File => Full_Source_File,
Lib_File => Lib_File,
Source_Index => Source.Index,
Pid => Pid,
Process_Created => Process_Created);
-- Compute where the ALI file will be generated (for
-- cases that might require to know the current
-- directory). The current directory might be changed
-- when compiling other files so we cannot rely on it
-- being the same to find the resulting ALI file.
if not In_Place_Mode then
-- Compute the expected location of the ALI file. This
-- can be from several places:
-- -i => in place mode. In such a case,
-- Full_Lib_File has already been set above
-- -D => if specified
-- or defaults in current dir
-- We could simply use a call similar to
-- Osint.Full_Lib_File_Name (Lib_File)
-- but that involves system calls and is thus slower
if Object_Directory_Path /= null then
Name_Len := 0;
Add_Str_To_Name_Buffer (Object_Directory_Path.all);
Add_Str_To_Name_Buffer (Get_Name_String (Lib_File));
Full_Lib_File := Name_Find;
else
Full_Lib_File := Lib_File;
end if;
end if;
Lib_File_Attr := Unknown_Attributes;
-- Make sure we could successfully start the compilation
if Process_Created then
if Pid = Invalid_Pid then
Record_Failure (Full_Source_File, Source.Unit);
else
Add_Process
(Pid => Pid,
Sfile => Full_Source_File,
Afile => Lib_File,
Uname => Source.Unit,
Mfile => Mfile,
Full_Lib_File => Full_Lib_File,
Lib_File_Attr => Lib_File_Attr);
end if;
end if;
end if;
end if;
end if;
return False;
end Start_Compile_If_Possible;
-----------------------------
-- Wait_For_Available_Slot --
-----------------------------
procedure Wait_For_Available_Slot is
Compilation_OK : Boolean;
Text : Text_Buffer_Ptr;
ALI : ALI_Id;
Data : Compilation_Data;
begin
if Outstanding_Compiles = Max_Process
or else (Queue.Is_Empty
and then not Good_ALI_Present
and then Outstanding_Compiles > 0)
then
Await_Compile (Data, Compilation_OK);
if not Compilation_OK then
Record_Failure (Data.Full_Source_File, Data.Source_Unit);
end if;
if Compilation_OK or else Keep_Going then
-- Re-read the updated library file
declare
Saved_Object_Consistency : constant Boolean :=
Check_Object_Consistency;
begin
-- If compilation was not OK, or if output is not an object
-- file and we don't do the bind step, don't check for
-- object consistency.
Check_Object_Consistency :=
Check_Object_Consistency
and Compilation_OK
and (Output_Is_Object or Do_Bind_Step);
Text :=
Read_Library_Info_From_Full
(Data.Full_Lib_File,
Data.Lib_File_Attr'Unchecked_Access);
-- Restore Check_Object_Consistency to its initial value
Check_Object_Consistency := Saved_Object_Consistency;
end;
-- If an ALI file was generated by this compilation, scan the
-- ALI file and record it.
-- If the scan fails, a previous ali file is inconsistent with
-- the unit just compiled.
if Text /= null then
ALI :=
Scan_ALI
(Data.Lib_File, Text, Err => True);
if ALI = No_ALI_Id then
-- Record a failure only if not already done
if Compilation_OK then
Inform
(Data.Lib_File,
"incompatible ALI file, please recompile");
Record_Failure
(Data.Full_Source_File, Data.Source_Unit);
end if;
else
Record_Good_ALI (ALI);
end if;
Free (Text);
-- If we could not read the ALI file that was just generated
-- then there could be a problem reading either the ALI or the
-- corresponding object file (if Check_Object_Consistency is
-- set Read_Library_Info checks that the time stamp of the
-- object file is more recent than that of the ALI). However,
-- we record a failure only if not already done.
else
if Compilation_OK and not Syntax_Only then
Inform
(Data.Lib_File,
"WARNING: ALI or object file not found after compile");
if not Is_Regular_File
(Get_Name_String (Name_Id (Data.Full_Lib_File)))
then
Inform (Data.Full_Lib_File, "not found");
end if;
Record_Failure (Data.Full_Source_File, Data.Source_Unit);
end if;
end if;
end if;
end if;
end Wait_For_Available_Slot;
-- Start of processing for Compile_Sources
begin
pragma Assert (Args'First = 1);
Outstanding_Compiles := 0;
Running_Compile := new Comp_Data_Arr (1 .. Max_Process);
-- Package and Queue initializations
Good_ALI.Init;
if Initialize_ALI_Data then
Initialize_ALI;
Initialize_ALI_Source;
end if;
-- The following two flags affect the behavior of ALI.Set_Source_Table.
-- We set Check_Source_Files to True to ensure that source file time
-- stamps are checked, and we set All_Sources to False to avoid checking
-- the presence of the source files listed in the source dependency
-- section of an ali file (which would be a mistake since the ali file
-- may be obsolete).
Check_Source_Files := True;
All_Sources := False;
Queue.Insert
((File => Main_Source,
Unit => No_Unit_Name,
Index => Main_Index));
First_Compiled_File := No_File;
Most_Recent_Obj_File := No_File;
Most_Recent_Obj_Stamp := Empty_Time_Stamp;
Main_Unit := False;
-- Keep looping until there is no more work to do (the Q is empty)
-- and all the outstanding compilations have terminated.
Make_Loop :
while not Queue.Is_Empty or else Outstanding_Compiles > 0 loop
exit Make_Loop when Must_Exit_Because_Of_Error;
exit Make_Loop when Start_Compile_If_Possible (Args);
Wait_For_Available_Slot;
-- ??? Should be done as soon as we add a Good_ALI, wouldn't it avoid
-- the need for a list of good ALI?
Fill_Queue_From_ALI_Files;
if Display_Compilation_Progress then
Write_Str ("completed ");
Write_Int (Int (Queue.Processed));
Write_Str (" out of ");
Write_Int (Int (Queue.Size));
Write_Str (" (");
Write_Int (Int ((Queue.Processed * 100) / Queue.Size));
Write_Str ("%)...");
Write_Eol;
end if;
end loop Make_Loop;
Compilation_Failures := Bad_Compilation_Count;
-- Compilation is finished
end Compile_Sources;
---------------
-- Debug_Msg --
---------------
procedure Debug_Msg (S : String; N : Name_Id) is
begin
if Debug.Debug_Flag_W then
Write_Str (" ... ");
Write_Str (S);
Write_Str (" ");
Write_Name (N);
Write_Eol;
end if;
end Debug_Msg;
procedure Debug_Msg (S : String; N : File_Name_Type) is
begin
Debug_Msg (S, Name_Id (N));
end Debug_Msg;
procedure Debug_Msg (S : String; N : Unit_Name_Type) is
begin
Debug_Msg (S, Name_Id (N));
end Debug_Msg;
-------------
-- Display --
-------------
procedure Display (Program : String; Args : Argument_List) is
begin
pragma Assert (Args'First = 1);
if not Quiet_Output then
Write_Str (Program);
for J in Args'Range loop
-- Never display -gnatea nor -gnatez
if Args (J).all /= "-gnatea"
and then
Args (J).all /= "-gnatez"
then
-- Do not display the -F=mapping_file switch for gnatbind if
-- -dn is not specified.
if Opt.Keep_Temporary_Files
or else Args (J)'Length < 4
or else
Args (J) (Args (J)'First .. Args (J)'First + 2) /= "-F="
then
Write_Str (" ");
-- If -df is used, only display file names, not path
-- names.
if Debug.Debug_Flag_F then
declare
Equal_Pos : Natural;
begin
Equal_Pos := Args (J)'First - 1;
for K in Args (J)'Range loop
if Args (J) (K) = '=' then
Equal_Pos := K;
exit;
end if;
end loop;
if Is_Absolute_Path
(Args (J) (Equal_Pos + 1 .. Args (J)'Last))
then
Write_Str
(Args (J) (Args (J)'First .. Equal_Pos));
Write_Str
(File_Name
(Args (J)
(Equal_Pos + 1 .. Args (J)'Last)));
else
Write_Str (Args (J).all);
end if;
end;
else
Write_Str (Args (J).all);
end if;
end if;
end if;
end loop;
Write_Eol;
end if;
end Display;
--------------------------
-- Enter_Into_Obsoleted --
--------------------------
procedure Enter_Into_Obsoleted (F : File_Name_Type) is
Name : constant String := Get_Name_String (F);
First : Natural;
F2 : File_Name_Type;
begin
First := Name'Last;
while First > Name'First
and then not Is_Directory_Separator (Name (First - 1))
loop
First := First - 1;
end loop;
if First /= Name'First then
Name_Len := 0;
Add_Str_To_Name_Buffer (Name (First .. Name'Last));
F2 := Name_Find;
else
F2 := F;
end if;
Debug_Msg ("New entry in Obsoleted table:", F2);
Obsoleted.Set (F2, True);
end Enter_Into_Obsoleted;
-------------------
-- Linking_Phase --
-------------------
procedure Linking_Phase
(Non_Std_Executable : Boolean := False;
Executable : File_Name_Type := No_File;
Main_ALI_File : File_Name_Type)
is
Linker_Switches_Last : constant Integer := Linker_Switches.Last;
begin
if not Run_Path_Option then
Linker_Switches.Increment_Last;
Linker_Switches.Table (Linker_Switches.Last) :=
new String'("-R");
end if;
if CodePeer_Mode then
Linker_Switches.Increment_Last;
Linker_Switches.Table (Linker_Switches.Last) :=
new String'(CodePeer_Mode_String);
end if;
-- Add switch -M to gnatlink if builder switch --create-map-file
-- has been specified.
if Map_File /= null then
Linker_Switches.Increment_Last;
Linker_Switches.Table (Linker_Switches.Last) :=
new String'("-M" & Map_File.all);
end if;
declare
Args : Argument_List
(Linker_Switches.First .. Linker_Switches.Last + 2);
Last_Arg : Integer := Linker_Switches.First - 1;
Skip : Boolean := False;
begin
-- Get all the linker switches
for J in Linker_Switches.First .. Linker_Switches.Last loop
if Skip then
Skip := False;
elsif Non_Std_Executable
and then Linker_Switches.Table (J).all = "-o"
then
Skip := True;
-- Here we capture and duplicate the linker argument. We
-- need to do the duplication since the arguments will get
-- normalized. Not doing so will result in calling normalized
-- two times for the same set of arguments if gnatmake is
-- passed multiple mains. This can result in the wrong
-- argument being passed to the linker.
else
Last_Arg := Last_Arg + 1;
Args (Last_Arg) := new String'(Linker_Switches.Table (J).all);
end if;
end loop;
-- If need be, add the -o switch
if Non_Std_Executable then
Last_Arg := Last_Arg + 1;
Args (Last_Arg) := new String'("-o");
Last_Arg := Last_Arg + 1;
Args (Last_Arg) := new String'(Get_Name_String (Executable));
end if;
-- And invoke the linker
declare
Success : Boolean := False;
begin
-- If gnatmake was invoked with --subdirs, put the executable in
-- the subdirectory specified.
if Subdirs /= null then
Change_Dir (Object_Directory_Path.all);
end if;
Link (Main_ALI_File,
Link_With_Shared_Libgcc.all &
Args (Args'First .. Last_Arg),
Success);
if Success then
Successful_Links.Increment_Last;
Successful_Links.Table (Successful_Links.Last) := Main_ALI_File;
elsif Osint.Number_Of_Files = 1 or else not Keep_Going then
Make_Failed ("*** link failed.");
else
Set_Standard_Error;
Write_Line ("*** link failed");
if Commands_To_Stdout then
Set_Standard_Output;
end if;
Failed_Links.Increment_Last;
Failed_Links.Table (Failed_Links.Last) := Main_ALI_File;
end if;
end;
end;
Linker_Switches.Set_Last (Linker_Switches_Last);
end Linking_Phase;
-------------------
-- Binding_Phase --
-------------------
procedure Binding_Phase (Main_ALI_File : File_Name_Type) is
Args : Argument_List (Binder_Switches.First .. Binder_Switches.Last + 2);
-- The arguments for the invocation of gnatbind
Last_Arg : Natural := Binder_Switches.Last;
-- Index of the last argument in Args
Shared_Libs : Boolean := False;
-- Set to True when there are shared library project files or
-- when gnatbind is invoked with -shared.
begin
-- Check now for switch -shared
for J in Binder_Switches.First .. Last_Arg loop
if Binder_Switches.Table (J).all = "-shared" then
Shared_Libs := True;
exit;
end if;
end loop;
-- If shared libraries present, invoke gnatlink with
-- -shared-libgcc.
if Shared_Libs then
Link_With_Shared_Libgcc := Shared_Libgcc_Switch'Access;
end if;
-- Get all the binder switches
for J in Binder_Switches.First .. Last_Arg loop
Args (J) := Binder_Switches.Table (J);
end loop;
if CodePeer_Mode then
Last_Arg := Last_Arg + 1;
Args (Last_Arg) := CodePeer_Mode_String'Access;
end if;
-- If gnatmake was invoked with --subdirs, put the
-- binder generated files in the subdirectory specified.
if Subdirs /= null then
Change_Dir (Object_Directory_Path.all);
end if;
Bind (Main_ALI_File, Bind_Shared.all & Args (Args'First .. Last_Arg));
end Binding_Phase;
-----------------------
-- Compilation_Phase --
-----------------------
procedure Compilation_Phase
(Main_Source_File : File_Name_Type;
Current_Main_Index : Int := 0;
Total_Compilation_Failures : in out Natural;
Executable : File_Name_Type := No_File;
Stop_Compile : out Boolean)
is
Args : Argument_List (1 .. Gcc_Switches.Last);
First_Compiled_File : File_Name_Type;
Youngest_Obj_File : File_Name_Type;
Youngest_Obj_Stamp : Time_Stamp_Type;
Is_Main_Unit : Boolean;
-- Set True by Compile_Sources if Main_Source_File can be a main unit
Compilation_Failures : Natural;
Executable_Stamp : Time_Stamp_Type;
begin
Stop_Compile := False;
for J in 1 .. Gcc_Switches.Last loop
Args (J) := Gcc_Switches.Table (J);
end loop;
-- Now we invoke Compile_Sources for the current main
Compile_Sources
(Main_Source => Main_Source_File,
Args => Args,
First_Compiled_File => First_Compiled_File,
Most_Recent_Obj_File => Youngest_Obj_File,
Most_Recent_Obj_Stamp => Youngest_Obj_Stamp,
Main_Unit => Is_Main_Unit,
Main_Index => Current_Main_Index,
Compilation_Failures => Compilation_Failures,
Check_Readonly_Files => Check_Readonly_Files,
Do_Not_Execute => Do_Not_Execute,
Force_Compilations => Force_Compilations,
In_Place_Mode => In_Place_Mode,
Keep_Going => Keep_Going,
Initialize_ALI_Data => True,
Max_Process => Maximum_Processes);
if Verbose_Mode then
Write_Str ("End of compilation");
Write_Eol;
end if;
Total_Compilation_Failures :=
Total_Compilation_Failures + Compilation_Failures;
if Total_Compilation_Failures /= 0 then
Stop_Compile := True;
return;
end if;
if List_Dependencies then
if First_Compiled_File /= No_File then
Inform
(First_Compiled_File,
"must be recompiled. Can't generate dependence list.");
else
List_Depend;
end if;
elsif First_Compiled_File = No_File
and then not Do_Bind_Step
and then not Quiet_Output
and then Osint.Number_Of_Files = 1
then
Inform (Msg => "objects up to date.");
Stop_Compile := True;
return;
elsif Do_Not_Execute and then First_Compiled_File /= No_File then
Write_Name (First_Compiled_File);
Write_Eol;
end if;
-- Stop after compile step if any of:
-- 1) -n (Do_Not_Execute) specified
-- 2) -M (List_Dependencies) specified (also sets
-- Do_Not_Execute above, so this is probably superfluous).
-- 3) -c (Compile_Only) specified, but not -b (Bind_Only)
-- 4) Made unit cannot be a main unit
if ((Do_Not_Execute
or List_Dependencies
or not Do_Bind_Step
or not Is_Main_Unit)
and not No_Main_Subprogram
and not Build_Bind_And_Link_Full_Project)
or Unique_Compile
then
Stop_Compile := True;
return;
end if;
-- If the objects were up-to-date check if the executable file is also
-- up-to-date. For now always bind and link in CodePeer mode where there
-- is no executable.
if not CodePeer_Mode
and then Do_Link_Step
and then First_Compiled_File = No_File
then
Executable_Stamp := File_Stamp (Executable);
if not Executable_Obsolete then
Executable_Obsolete := Youngest_Obj_Stamp > Executable_Stamp;
end if;
if not Executable_Obsolete then
for Index in reverse 1 .. Dependencies.Last loop
if Is_In_Obsoleted (Dependencies.Table (Index).Depends_On) then
Enter_Into_Obsoleted (Dependencies.Table (Index).This);
end if;
end loop;
Executable_Obsolete := Is_In_Obsoleted (Main_Source_File);
Dependencies.Init;
end if;
if not Executable_Obsolete then
-- If no Ada object files obsolete the executable, check
-- for younger or missing linker files.
Check_Linker_Options
(Executable_Stamp,
Youngest_Obj_File,
Youngest_Obj_Stamp);
Executable_Obsolete := Youngest_Obj_File /= No_File;
end if;
-- Return if the executable is up to date and otherwise
-- motivate the relink/rebind.
if not Executable_Obsolete then
if not Quiet_Output then
Inform (Executable, "up to date.");
end if;
Stop_Compile := True;
return;
end if;
if Executable_Stamp (1) = ' ' then
if not No_Main_Subprogram then
Verbose_Msg (Executable, "missing.", Prefix => " ");
end if;
elsif Youngest_Obj_Stamp (1) = ' ' then
Verbose_Msg
(Youngest_Obj_File, "missing.", Prefix => " ");
elsif Youngest_Obj_Stamp > Executable_Stamp then
Verbose_Msg
(Youngest_Obj_File,
"(" & String (Youngest_Obj_Stamp) & ") newer than",
Executable,
"(" & String (Executable_Stamp) & ")");
else
Verbose_Msg
(Executable, "needs to be rebuilt", Prefix => " ");
end if;
end if;
end Compilation_Phase;
------------------------
-- Compute_Executable --
------------------------
procedure Compute_Executable
(Main_Source_File : File_Name_Type;
Executable : out File_Name_Type;
Non_Std_Executable : out Boolean)
is
begin
Executable := No_File;
Non_Std_Executable :=
Targparm.Executable_Extension_On_Target /= No_Name;
-- Look inside the linker switches to see if the name of the final
-- executable program was specified.
for J in reverse Linker_Switches.First .. Linker_Switches.Last loop
if Linker_Switches.Table (J).all = Output_Flag.all then
pragma Assert (J < Linker_Switches.Last);
-- We cannot specify a single executable for several main
-- subprograms
if Osint.Number_Of_Files > 1 then
Fail ("cannot specify a single executable for several mains");
end if;
Name_Len := 0;
Add_Str_To_Name_Buffer (Linker_Switches.Table (J + 1).all);
Executable := Name_Enter;
Verbose_Msg (Executable, "final executable");
end if;
end loop;
-- If the name of the final executable program was not specified then
-- construct it from the main input file.
if Executable = No_File then
Executable := Executable_Name (Strip_Suffix (Main_Source_File));
end if;
end Compute_Executable;
--------------
-- Gnatmake --
--------------
procedure Gnatmake is
Main_Source_File : File_Name_Type;
-- The source file containing the main compilation unit
Total_Compilation_Failures : Natural := 0;
Main_ALI_File : File_Name_Type;
-- The ali file corresponding to Main_Source_File
Executable : File_Name_Type := No_File;
-- The file name of an executable
Non_Std_Executable : Boolean := False;
-- Non_Std_Executable is set to True when there is a possibility that
-- the linker will not choose the correct executable file name.
Current_Main_Index : Int := 0;
-- If not zero, the index of the current main unit in its source file
Is_First_Main : Boolean;
-- Whether we are processing the first main
Stop_Compile : Boolean;
Discard : Boolean;
pragma Warnings (Off, Discard);
begin
GNAT.Ctrl_C.Install_Handler (Sigint_Intercepted'Access);
Do_Compile_Step := True;
Do_Bind_Step := True;
Do_Link_Step := True;
Obsoleted.Reset;
Make.Initialize;
Bind_Shared := No_Shared_Switch'Access;
Link_With_Shared_Libgcc := No_Shared_Libgcc_Switch'Access;
Failed_Links.Set_Last (0);
Successful_Links.Set_Last (0);
-- Special case when switch -B was specified
if Main_Index /= 0 and then Osint.Number_Of_Files > 1 then
Make_Failed ("cannot specify several mains with a multi-unit index");
end if;
if Verbose_Mode then
Write_Eol;
Display_Version ("GNATMAKE", "1992");
end if;
if Osint.Number_Of_Files = 0 then
-- Call Get_Target_Parameters to ensure that flags are properly
-- set before calling Usage.
Targparm.Get_Target_Parameters;
-- Output usage information if no argument on the command line
if Argument_Count = 0 then
Usage;
else
Try_Help;
end if;
Finish_Program (E_Success);
end if;
-- Get the first executable.
-- ??? This needs to be done early, because Osint.Next_Main_File also
-- initializes the primary search directory, used below to initialize
-- the "-I" parameter
Main_Source_File := Next_Main_Source; -- No directory information
-- If -M was specified, behave as if -n was specified
if List_Dependencies then
Do_Not_Execute := True;
end if;
Add_Switch ("-I-", Compiler);
if Look_In_Primary_Dir then
Add_Switch
("-I" &
Normalize_Directory_Name
(Get_Primary_Src_Search_Directory.all).all,
Compiler,
Append_Switch => False);
end if;
-- If the user wants a program without a main subprogram, add the
-- appropriate switch to the binder.
if No_Main_Subprogram then
Add_Switch ("-z", Binder);
end if;
-- The combination of -f -u and one or several mains on the command line
-- implies -a.
if Force_Compilations
and then Unique_Compile
and then Main_On_Command_Line
then
Must_Compile := True;
end if;
Bad_Compilation.Init;
-- Here is where the make process is started
Queue.Initialize;
Is_First_Main := True;
Multiple_Main_Loop : for N_File in 1 .. Osint.Number_Of_Files loop
if Current_File_Index /= No_Index then
Main_Index := Current_File_Index;
end if;
Current_Main_Index := Main_Index;
if Is_First_Main then
-- Put the default source dirs in the source path only now, so
-- that we take the correct ones in the case where --RTS= is
-- specified in the Builder switches.
Osint.Add_Default_Search_Dirs;
-- Get the target parameters, which are only needed for a couple
-- of cases in gnatmake. Protect against an exception, such as the
-- case of system.ads missing from the library, and fail
-- gracefully.
begin
Targparm.Get_Target_Parameters;
exception
when Unrecoverable_Error =>
Make_Failed ("*** make failed.");
end;
Gcc_Path := GNAT.OS_Lib.Locate_Exec_On_Path (Gcc.all);
Gnatbind_Path := GNAT.OS_Lib.Locate_Exec_On_Path (Gnatbind.all);
Gnatlink_Path := GNAT.OS_Lib.Locate_Exec_On_Path (Gnatlink.all);
-- If we have specified -j switch both from the project file
-- and on the command line, the one from the command line takes
-- precedence.
if Debug.Debug_Flag_M then
Write_Line ("Maximum number of simultaneous compilations =" &
Maximum_Processes'Img);
end if;
-- Allocate as many temporary mapping file names as the maximum
-- number of compilations processed.
The_Mapping_Files :=
(Mapping_File_Names =>
new Temp_Path_Names (1 .. Maximum_Processes),
Last_Mapping_File_Names => 0,
Free_Mapping_File_Indexes =>
new Free_File_Indexes (1 .. Maximum_Processes),
Last_Free_Indexes => 0);
Is_First_Main := False;
end if;
Executable_Obsolete := False;
Compute_Executable
(Main_Source_File => Main_Source_File,
Executable => Executable,
Non_Std_Executable => Non_Std_Executable);
if Do_Compile_Step then
Compilation_Phase
(Main_Source_File => Main_Source_File,
Current_Main_Index => Current_Main_Index,
Total_Compilation_Failures => Total_Compilation_Failures,
Executable => Executable,
Stop_Compile => Stop_Compile);
if Stop_Compile then
if Total_Compilation_Failures /= 0 then
if Keep_Going then
goto Next_Main;
else
List_Bad_Compilations;
Report_Compilation_Failed;
end if;
elsif Osint.Number_Of_Files = 1 then
exit Multiple_Main_Loop;
else
goto Next_Main;
end if;
end if;
end if;
-- If we are here, it means that we need to rebuilt the current main,
-- so we set Executable_Obsolete to True to make sure that subsequent
-- mains will be rebuilt.
Main_ALI_In_Place_Mode_Step : declare
ALI_File : File_Name_Type;
Src_File : File_Name_Type;
begin
Src_File := Strip_Directory (Main_Source_File);
ALI_File := Lib_File_Name (Src_File, Current_Main_Index);
Main_ALI_File := Full_Lib_File_Name (ALI_File);
-- When In_Place_Mode, the library file can be located in the
-- Main_Source_File directory which may not be present in the
-- library path. If it is not present then use the corresponding
-- library file name.
if Main_ALI_File = No_File and then In_Place_Mode then
Get_Name_String (Get_Directory (Full_Source_Name (Src_File)));
Get_Name_String_And_Append (ALI_File);
Main_ALI_File := Name_Find;
Main_ALI_File := Full_Lib_File_Name (Main_ALI_File);
end if;
if Main_ALI_File = No_File then
Make_Failed ("could not find the main ALI file");
end if;
end Main_ALI_In_Place_Mode_Step;
if Do_Bind_Step then
Binding_Phase (Main_ALI_File);
end if;
if Do_Link_Step then
Linking_Phase
(Non_Std_Executable => Non_Std_Executable,
Executable => Executable,
Main_ALI_File => Main_ALI_File);
end if;
-- We go to here when we skip the bind and link steps
<<Next_Main>>
Queue.Remove_Marks;
if N_File < Osint.Number_Of_Files then
Main_Source_File := Next_Main_Source; -- No directory information
end if;
end loop Multiple_Main_Loop;
if Failed_Links.Last > 0 then
for Index in 1 .. Successful_Links.Last loop
Write_Str ("Linking of """);
Write_Str (Get_Name_String (Successful_Links.Table (Index)));
Write_Line (""" succeeded.");
end loop;
Set_Standard_Error;
for Index in 1 .. Failed_Links.Last loop
Write_Str ("Linking of """);
Write_Str (Get_Name_String (Failed_Links.Table (Index)));
Write_Line (""" failed.");
end loop;
if Commands_To_Stdout then
Set_Standard_Output;
end if;
if Total_Compilation_Failures = 0 then
Report_Compilation_Failed;
end if;
end if;
if Total_Compilation_Failures /= 0 then
List_Bad_Compilations;
Report_Compilation_Failed;
end if;
Finish_Program (E_Success);
exception
when X : others =>
Set_Standard_Error;
Write_Line (Exception_Information (X));
Make_Failed ("INTERNAL ERROR. Please report.");
end Gnatmake;
----------
-- Hash --
----------
function Hash (F : File_Name_Type) return Header_Num is
begin
return Header_Num (1 + F mod Max_Header);
end Hash;
--------------------
-- In_Ada_Lib_Dir --
--------------------
function In_Ada_Lib_Dir (File : File_Name_Type) return Boolean is
D : constant File_Name_Type := Get_Directory (File);
B : constant Byte := Get_Name_Table_Byte (D);
begin
return (B and Ada_Lib_Dir) /= 0;
end In_Ada_Lib_Dir;
-----------------------
-- Init_Mapping_File --
-----------------------
procedure Init_Mapping_File (File_Index : out Natural) is
FD : File_Descriptor;
Status : Boolean;
-- For call to Close
begin
-- Increase the index of the last mapping file for this project
The_Mapping_Files.Last_Mapping_File_Names :=
The_Mapping_Files.Last_Mapping_File_Names + 1;
-- Just create an empty file
Tempdir.Create_Temp_File
(FD,
The_Mapping_Files.Mapping_File_Names
(The_Mapping_Files.Last_Mapping_File_Names));
if FD = Invalid_FD then
Make_Failed ("disk full");
else
Record_Temp_File
(The_Mapping_Files.Mapping_File_Names
(The_Mapping_Files.Last_Mapping_File_Names));
end if;
Close (FD, Status);
if not Status then
Make_Failed ("disk full");
end if;
-- And return the index of the newly created file
File_Index := The_Mapping_Files.Last_Mapping_File_Names;
end Init_Mapping_File;
----------------
-- Initialize --
----------------
procedure Initialize is
procedure Check_Version_And_Help is
new Check_Version_And_Help_G (Makeusg);
begin
-- Override default initialization of Check_Object_Consistency since
-- this is normally False for GNATBIND, but is True for GNATMAKE since
-- we do not need to check source consistency again once GNATMAKE has
-- looked at the sources to check.
Check_Object_Consistency := True;
-- Package initializations (the order of calls is important here)
Output.Set_Standard_Error;
Gcc_Switches.Init;
Binder_Switches.Init;
Linker_Switches.Init;
Csets.Initialize;
Snames.Initialize;
Stringt.Initialize;
Dependencies.Init;
RTS_Specified := null;
N_M_Switch := 0;
Mains.Delete;
-- Add the directory where gnatmake is invoked in front of the path,
-- if gnatmake is invoked from a bin directory or with directory
-- information.
declare
Prefix : constant String := Executable_Prefix_Path;
Command : constant String := Command_Name;
begin
if Prefix'Length > 0 then
declare
PATH : constant String :=
Prefix & Directory_Separator & "bin" & Path_Separator
& Getenv ("PATH").all;
begin
Setenv ("PATH", PATH);
end;
else
for Index in reverse Command'Range loop
if Command (Index) = Directory_Separator then
declare
Absolute_Dir : constant String :=
Normalize_Pathname
(Command (Command'First .. Index));
PATH : constant String :=
Absolute_Dir &
Path_Separator &
Getenv ("PATH").all;
begin
Setenv ("PATH", PATH);
end;
exit;
end if;
end loop;
end if;
end;
-- Scan the switches and arguments
-- First, scan to detect --version and/or --help
Check_Version_And_Help ("GNATMAKE", "1995");
-- Scan again the switch and arguments, now that we are sure that they
-- do not include --version or --help.
-- First, check for switch -P and, if found and gprbuild is available,
-- silently invoke gprbuild, with switch --target if not on a native
-- platform.
declare
Arg_Len : Natural := Argument_Count;
Call_Gprbuild : Boolean := False;
Gprbuild : String_Access := null;
Pos : Natural := 0;
Success : Boolean;
Target : String_Access := null;
In_Gnatmake_Switches : Boolean := True;
-- Set to False after -cargs, -bargs, or -largs, to avoid detecting
-- -P switches that are not for gnatmake.
begin
Find_Program_Name;
if Name_Len >= 8
and then Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake"
then
if Name_Len > 9 then
Target := new String'(Name_Buffer (1 .. Name_Len - 9));
Arg_Len := Arg_Len + 1;
end if;
for J in 1 .. Argument_Count loop
declare
Arg : constant String := Argument (J);
begin
if Arg in "-cargs" | "-bargs" | "-largs" then
In_Gnatmake_Switches := False;
elsif Arg = "-margs" then
In_Gnatmake_Switches := True;
elsif In_Gnatmake_Switches
and then Arg'Length >= 2
and then Arg (Arg'First .. Arg'First + 1) = "-P"
then
Call_Gprbuild := True;
exit;
end if;
end;
end loop;
if Call_Gprbuild then
Gprbuild := Locate_Exec_On_Path (Exec_Name => "gprbuild");
if Gprbuild = null then
Fail_Program
("project files are no longer supported by gnatmake;" &
" use gprbuild instead");
end if;
declare
Args : Argument_List (1 .. Arg_Len);
begin
if Target /= null then
Args (1) := new String'("--target=" & Target.all);
Pos := 1;
end if;
for J in 1 .. Argument_Count loop
Pos := Pos + 1;
Args (Pos) := new String'(Argument (J));
end loop;
Spawn (Gprbuild.all, Args, Success);
Free (Gprbuild);
if Success then
Exit_Program (E_Success);
else
Exit_Program (E_Errors);
end if;
end;
end if;
end if;
end;
Scan_Args : for Next_Arg in 1 .. Argument_Count loop
Scan_Make_Arg (Argument (Next_Arg));
end loop Scan_Args;
if Make_Steps then
Do_Compile_Step := Compile_Only;
Do_Bind_Step := Bind_Only;
Do_Link_Step := Link_Only;
if Do_Compile_Step and then Do_Link_Step then
Do_Bind_Step := True;
end if;
end if;
if N_M_Switch > 0 and RTS_Specified = null then
Process_Multilib;
end if;
if Commands_To_Stdout then
Set_Standard_Output;
end if;
if Usage_Requested then
Usage;
end if;
-- Test for trailing -P switch
if Project_File_Name_Present and then Project_File_Name = null then
Make_Failed ("project file name missing after -P");
-- Test for trailing -o switch
elsif Output_File_Name_Present and then not Output_File_Name_Seen then
Make_Failed ("output file name missing after -o");
-- Test for trailing -D switch
elsif Object_Directory_Present and then not Object_Directory_Seen then
Make_Failed ("object directory missing after -D");
end if;
-- Test for simultaneity of -i and -D
if Object_Directory_Path /= null and then In_Place_Mode then
Make_Failed ("-i and -D cannot be used simultaneously");
end if;
-- If --subdirs= is specified, but not -P, this is equivalent to -D,
-- except that the directory is created if it does not exist.
if Subdirs /= null then
if Object_Directory_Path /= null then
Make_Failed ("--subdirs and -D cannot be used simultaneously");
elsif In_Place_Mode then
Make_Failed ("--subdirs and -i cannot be used simultaneously");
else
if not Is_Directory (Subdirs.all) then
begin
Ada.Directories.Create_Path (Subdirs.all);
exception
when others =>
Make_Failed ("unable to create object directory " &
Subdirs.all);
end;
end if;
Object_Directory_Present := True;
declare
Argv : constant String (1 .. Subdirs'Length) :=
Subdirs.all;
begin
Scan_Make_Arg (Argv);
end;
end if;
end if;
-- Deal with -C= switch
if Gnatmake_Mapping_File /= null then
-- First, check compatibility with other switches
if Maximum_Processes > 1 then
Make_Failed ("-C= switch is not compatible with -jnnn switch");
end if;
Fmap.Initialize (Gnatmake_Mapping_File.all);
Add_Switch
("-gnatem=" & Gnatmake_Mapping_File.all,
Compiler);
end if;
Osint.Add_Default_Search_Dirs;
-- Source file lookups should be cached for efficiency. Source files
-- are not supposed to change. However, we do that now only if no
-- project file is used; if a project file is used, we do it just
-- after changing the directory to the object directory.
Osint.Source_File_Data (Cache => True);
-- Read gnat.adc file to initialize Fname.UF
Fname.UF.Initialize;
if Config_File then
begin
Fname.SF.Read_Source_File_Name_Pragmas;
exception
when Err : SFN_Scan.Syntax_Error_In_GNAT_ADC =>
Make_Failed (Exception_Message (Err));
end;
end if;
if Debug.Debug_Flag_N then
Opt.Keep_Temporary_Files := True;
end if;
end Initialize;
---------------------
-- Is_In_Obsoleted --
---------------------
function Is_In_Obsoleted (F : File_Name_Type) return Boolean is
begin
if F = No_File then
return False;
else
declare
Name : constant String := Get_Name_String (F);
First : Natural;
F2 : File_Name_Type;
begin
First := Name'Last;
while First > Name'First
and then not Is_Directory_Separator (Name (First - 1))
loop
First := First - 1;
end loop;
if First /= Name'First then
Name_Len := 0;
Add_Str_To_Name_Buffer (Name (First .. Name'Last));
F2 := Name_Find;
else
F2 := F;
end if;
return Obsoleted.Get (F2);
end;
end if;
end Is_In_Obsoleted;
----------
-- Link --
----------
procedure Link
(ALI_File : File_Name_Type;
Args : Argument_List;
Success : out Boolean)
is
Link_Args : Argument_List (1 .. Args'Length + 1);
begin
Get_Name_String (ALI_File);
Link_Args (1) := new String'(Name_Buffer (1 .. Name_Len));
Link_Args (2 .. Args'Length + 1) := Args;
GNAT.OS_Lib.Normalize_Arguments (Link_Args);
Display (Gnatlink.all, Link_Args);
if Gnatlink_Path = null then
Make_Failed ("error, unable to locate " & Gnatlink.all);
end if;
GNAT.OS_Lib.Spawn (Gnatlink_Path.all, Link_Args, Success);
end Link;
---------------------------
-- List_Bad_Compilations --
---------------------------
procedure List_Bad_Compilations is
begin
if not No_Exit_Message then
for J in Bad_Compilation.First .. Bad_Compilation.Last loop
if Bad_Compilation.Table (J).File = No_File then
null;
elsif not Bad_Compilation.Table (J).Found then
Inform (Bad_Compilation.Table (J).File, "not found");
else
Inform (Bad_Compilation.Table (J).File, "compilation error");
end if;
end loop;
end if;
end List_Bad_Compilations;
-----------------
-- List_Depend --
-----------------
procedure List_Depend is
Lib_Name : File_Name_Type;
Obj_Name : File_Name_Type;
Src_Name : File_Name_Type;
Len : Natural;
Line_Pos : Natural;
Line_Size : constant := 77;
begin
Set_Standard_Output;
for A in ALIs.First .. ALIs.Last loop
Lib_Name := ALIs.Table (A).Afile;
-- We have to provide the full library file name in In_Place_Mode
if In_Place_Mode then
Lib_Name := Full_Lib_File_Name (Lib_Name);
end if;
Obj_Name := Object_File_Name (Lib_Name);
Write_Name (Obj_Name);
Write_Str (" :");
Get_Name_String (Obj_Name);
Len := Name_Len;
Line_Pos := Len + 2;
for D in ALIs.Table (A).First_Sdep .. ALIs.Table (A).Last_Sdep loop
Src_Name := Sdep.Table (D).Sfile;
if Is_Internal_File_Name (Src_Name)
and then not Check_Readonly_Files
then
null;
else
if not Quiet_Output then
Src_Name := Full_Source_Name (Src_Name);
end if;
Get_Name_String (Src_Name);
Len := Name_Len;
if Line_Pos + Len + 1 > Line_Size then
Write_Str (" \");
Write_Eol;
Line_Pos := 0;
end if;
Line_Pos := Line_Pos + Len + 1;
Write_Str (" ");
Write_Name (Src_Name);
end if;
end loop;
Write_Eol;
end loop;
if not Commands_To_Stdout then
Set_Standard_Error;
end if;
end List_Depend;
-----------------
-- Make_Failed --
-----------------
procedure Make_Failed (S : String) is
begin
Fail_Program (S);
end Make_Failed;
--------------------
-- Mark_Directory --
--------------------
procedure Mark_Directory (Dir : String; Mark : Lib_Mark_Type) is
N : Name_Id;
B : Byte;
Real_Path : constant String := Normalize_Pathname (Dir, "");
begin
Name_Len := 0;
if Real_Path'Length = 0 then
Add_Str_To_Name_Buffer (Dir);
else
Add_Str_To_Name_Buffer (Real_Path);
end if;
-- Last character is supposed to be a directory separator
if not Is_Directory_Separator (Name_Buffer (Name_Len)) then
Add_Char_To_Name_Buffer (Directory_Separator);
end if;
-- Add flags to the already existing flags
N := Name_Find;
B := Get_Name_Table_Byte (N);
Set_Name_Table_Byte (N, B or Mark);
end Mark_Directory;
----------------------
-- Process_Multilib --
----------------------
procedure Process_Multilib is
Output_FD : File_Descriptor;
Output_Name : String_Access;
Arg_Index : Natural := 0;
Success : Boolean := False;
Return_Code : Integer := 0;
Multilib_Gcc_Path : String_Access;
Multilib_Gcc : String_Access;
N_Read : Integer := 0;
Line : String (1 .. 1000);
Args : Argument_List (1 .. N_M_Switch + 1);
begin
pragma Assert (N_M_Switch > 0 and RTS_Specified = null);
-- In case we detected a multilib switch and the user has not
-- manually specified a specific RTS we emulate the following command:
-- gnatmake $FLAGS --RTS=$(gcc -print-multi-directory $FLAGS)
-- First select the flags which might have an impact on multilib
-- processing. Note that this is an heuristic selection and it
-- will need to be maintained over time. The condition has to
-- be kept synchronized with N_M_Switch counting in Scan_Make_Arg.
for Next_Arg in 1 .. Argument_Count loop
declare
Argv : constant String := Argument (Next_Arg);
begin
if Argv'Length > 2
and then Argv (1) = '-'
and then Argv (2) = 'm'
and then Argv /= "-margs"
-- Ignore -mieee to avoid spawning an extra gcc in this case
and then Argv /= "-mieee"
then
Arg_Index := Arg_Index + 1;
Args (Arg_Index) := new String'(Argv);
end if;
end;
end loop;
pragma Assert (Arg_Index = N_M_Switch);
Args (Args'Last) := new String'("-print-multi-directory");
-- Call the GCC driver with the collected flags and save its
-- output. Alternate design would be to link in gnatmake the
-- relevant part of the GCC driver.
Multilib_Gcc := Gcc;
Multilib_Gcc_Path := GNAT.OS_Lib.Locate_Exec_On_Path (Multilib_Gcc.all);
Create_Temp_Output_File (Output_FD, Output_Name);
if Output_FD = Invalid_FD then
return;
end if;
GNAT.OS_Lib.Spawn
(Multilib_Gcc_Path.all, Args, Output_FD, Return_Code, False);
Close (Output_FD);
if Return_Code /= 0 then
return;
end if;
-- Parse the GCC driver output which is a single line, removing CR/LF
Output_FD := Open_Read (Output_Name.all, Binary);
if Output_FD = Invalid_FD then
return;
end if;
N_Read := Read (Output_FD, Line (1)'Address, Line'Length);
Close (Output_FD);
Delete_File (Output_Name.all, Success);
for J in reverse 1 .. N_Read loop
if Line (J) = ASCII.CR or else Line (J) = ASCII.LF then
N_Read := N_Read - 1;
else
exit;
end if;
end loop;
-- In case the standard RTS is selected do nothing
if N_Read = 0 or else Line (1 .. N_Read) = "." then
return;
end if;
-- Otherwise add -margs --RTS=output
Scan_Make_Arg ("-margs");
Scan_Make_Arg ("--RTS=" & Line (1 .. N_Read));
end Process_Multilib;
-------------------------------
-- Report_Compilation_Failed --
-------------------------------
procedure Report_Compilation_Failed is
begin
Fail_Program ("");
end Report_Compilation_Failed;
------------------------
-- Sigint_Intercepted --
------------------------
procedure Sigint_Intercepted is
begin
Set_Standard_Error;
Write_Line ("*** Interrupted ***");
-- Send SIGINT to all outstanding compilation processes spawned
for J in 1 .. Outstanding_Compiles loop
Kill (Running_Compile (J).Pid, Hard_Kill => False);
end loop;
Finish_Program (E_No_Compile);
end Sigint_Intercepted;
-------------------
-- Scan_Make_Arg --
-------------------
procedure Scan_Make_Arg (Argv : String) is
Success : Boolean;
begin
Gnatmake_Switch_Found := True;
pragma Assert (Argv'First = 1);
if Argv'Length = 0 then
return;
end if;
-- If the previous switch has set the Output_File_Name_Present flag
-- (that is we have seen a -o), then the next argument is the name of
-- the output executable.
if Output_File_Name_Present and then not Output_File_Name_Seen then
Output_File_Name_Seen := True;
if Argv (1) = '-' then
Make_Failed ("output file name missing after -o");
else
Add_Switch ("-o", Linker);
Add_Switch (Executable_Name (Argv), Linker);
end if;
-- If the previous switch has set the Object_Directory_Present flag
-- (that is we have seen a -D), then the next argument is the path name
-- of the object directory.
elsif Object_Directory_Present
and then not Object_Directory_Seen
then
Object_Directory_Seen := True;
if Argv (1) = '-' then
Make_Failed ("object directory path name missing after -D");
elsif not Is_Directory (Argv) then
Make_Failed ("cannot find object directory """ & Argv & """");
else
-- Record the object directory. Make sure it ends with a directory
-- separator.