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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T _ W R A P P E R --
-- --
-- B o d y --
-- --
-- Copyright (C) 2002-2003 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 2, 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 COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- GNAT_Wrapper is to be used as the starter program for most of the GNAT
-- executables. It sets up the working environment variables and calls the
-- real executable which is to be found under the 'real' sub-directory.
--
-- This avoids using the registry on Windows which is tricky to setup to run
-- multiple compilers (GNAT Pro release and wavefronts for example) at the
-- same time.
with Ada.Command_Line; use Ada.Command_Line;
with GNAT.OS_Lib; use GNAT.OS_Lib;
procedure GNAT_Wrapper is
DS : Character renames Directory_Separator;
PS : Character renames Path_Separator;
procedure Split_Command;
-- Parse Actual_Name and set K and L variables (see below).
Actual_Name : String_Access := new String'(Command_Name);
K : Natural;
-- Index of the directory separator just before program name's first
-- character.
L : Natural;
-- Index of the last character of the GNATPRO install directory.
LD_LIBRARY_PATH : String_Access := Getenv ("LD_LIBRARY_PATH");
PATH : String_Access := Getenv ("PATH");
-------------------
-- Split_Command --
-------------------
procedure Split_Command is
begin
K := Actual_Name'Last;
loop
exit when K = 0
or else Actual_Name (K) = '\' or else Actual_Name (K) = '/';
K := K - 1;
end loop;
end Split_Command;
begin
Split_Command;
if K = 0 then
-- No path information found, locate the program on the path.
declare
Old : String_Access := Actual_Name;
begin
Actual_Name := Locate_Exec_On_Path (Actual_Name.all);
Free (Old);
Split_Command;
end;
end if;
-- Skip 'bin' from directory above. GNAT binaries are always under
-- <gnatpro>/bin directory.
L := K - 4;
declare
Prog : constant String := Actual_Name (K + 1 .. Actual_Name'Last);
Dir : constant String := Actual_Name (Actual_Name'First .. L - 1);
Real : constant String := Dir & DS & ".bin";
Bin : constant String := Dir & DS & "bin";
Args : Argument_List (1 .. Argument_Count);
Result : Integer;
begin
Setenv ("GCC_ROOT", Dir);
Setenv ("GNAT_ROOT", Dir);
Setenv ("BINUTILS_ROOT", Dir);
Setenv ("LD_LIBRARY_PATH", Dir & DS & "lib" & PS & LD_LIBRARY_PATH.all);
Setenv ("PATH", Real & PS & Bin & PS & PATH.all);
-- Call the right executable under "<dir>/.bin"
for K in 1 .. Argument_Count loop
Args (K) := new String'(Argument (K));
end loop;
Normalize_Arguments (Args);
Result := Spawn (Real & DS & Prog, Args);
for K in 1 .. Argument_Count loop
Free (Args (K));
end loop;
OS_Exit (Result);
end;
end GNAT_Wrapper;
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