gcc/ada/mlib-tgt.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             M L I B . T G T                              --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --              Copyright (C) 2001-2004, Ada Core Technologies, Inc.        --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  This package provides a set of target dependent routines to build
  28 --  static, dynamic and shared libraries.
  29
  30 --  There are several versions for the body of this package.
  31
  32 --  In the default version, libraries are not supported, so function
  33 --  Support_For_Libraries return None.
  34
  35 with GNAT.OS_Lib; use GNAT.OS_Lib;
  36 with Prj;         use Prj;
  37
  38 package MLib.Tgt is
  39
  40    type Library_Support is (None, Static_Only, Full);
  41    --  Support for Library Project File.
  42    --  - None: Library Project Files are not supported at all
  43    --  - Static_Only: Library Project Files are only supported for static
  44    --    libraries.
  45    --  - Full: Library Project Files are supported for static and dynamic
  46    --    (shared) libraries.
  47
  48    function Support_For_Libraries return Library_Support;
  49    --  Indicates how building libraries by gnatmake is supported by the GNAT
  50    --  implementation for the platform.
  51
  52    function Standalone_Library_Auto_Init_Is_Supported return Boolean;
  53    --  Indicates if when building a dynamic Standalone Library,
  54    --  automatic initialization is supported. If it is, then it is the default,
  55    --  unless attribute Library_Auto_Init has the value "false".
  56
  57    function Archive_Builder return String;
  58    --  Returns the name of the archive builder program, usually "ar"
  59
  60    function Archive_Builder_Options return String_List_Access;
  61    --  A list of options to invoke the Archive_Builder, usually "cr" for "ar"
  62
  63    function Archive_Indexer return String;
  64    --  Returns the name of the program, if any, that generates an index
  65    --  to the contents of an archive, usually "ranlib".
  66
  67    function Default_DLL_Address return String;
  68    --  Default address for non relocatable DLL.
  69    --  For OSes where a dynamic library is always relocatable,
  70    --  this function returns an empty string.
  71
  72    function Dynamic_Option return String;
  73    --  gcc option to create a dynamic library.
  74    --  For Unix, returns "-shared", for Windows returns "-mdll".
  75
  76    function Libgnat return String;
  77    --  System dependent static GNAT library
  78
  79    function Archive_Ext return  String;
  80    --  System dependent static library extension, without leading dot.
  81    --  For Unix and Windows, return "a".
  82
  83    function Object_Ext return String;
  84    --  System dependent object extension, without leadien dot.
  85    --  On Unix, returns "o".
  86
  87    function DLL_Ext return String;
  88    --  System dependent dynamic library extension, without leading dot.
  89    --  On Windows, returns "dll". On Unix, usually returns "so", but not
  90    --  always, e.g. on HP-UX the extension for shared libraries is "sl".
  91
  92    function PIC_Option return String;
  93    --  Position independent code option
  94
  95    function Is_Object_Ext (Ext : String) return Boolean;
  96    --  Returns True iff Ext is an object file extension
  97
  98    function Is_C_Ext (Ext : String) return Boolean;
  99    --  Returns True iff Ext is a C file extension.
 100
 101    function Is_Archive_Ext (Ext : String) return Boolean;
 102    --  Returns True iff Ext is an extension for a library
 103
 104    procedure Build_Dynamic_Library
 105      (Ofiles       : Argument_List;
 106       Foreign      : Argument_List;
 107       Afiles       : Argument_List;
 108       Options      : Argument_List;
 109       Interfaces   : Argument_List;
 110       Lib_Filename : String;
 111       Lib_Dir      : String;
 112       Symbol_Data  : Symbol_Record;
 113       Driver_Name  : Name_Id := No_Name;
 114       Lib_Address  : String  := "";
 115       Lib_Version  : String  := "";
 116       Relocatable  : Boolean := False;
 117       Auto_Init    : Boolean := False);
 118    --  Build a dynamic/relocatable library
 119    --
 120    --  Ofiles is the list of all object files in the library
 121    --
 122    --  Foreign is the list of non Ada object files (also included in Ofiles)
 123    --
 124    --  Afiles is the list of ALI files for the Ada object files
 125    --
 126    --  Options is a list of options to be passed to the tool (gcc or other)
 127    --  that effectively builds the dynamic library.
 128    --
 129    --  Interfaces is the list of ALI files for the interfaces of a SAL.
 130    --  It is empty if the library is not a SAL.
 131    --
 132    --  Lib_Filename is the name of the library, without any prefix or
 133    --  extension. For example, on Unix, if Lib_Filename is "toto", the
 134    --  name of the library file will be "libtoto.so".
 135    --
 136    --  Lib_Dir is the directory path where the library will be located
 137    --
 138    --  Lib_Address is the base address of the library for a non relocatable
 139    --  library, given as an hexadecimal string.
 140    --
 141    --  For OSes that support symbolic links, Lib_Version, if non null,
 142    --  is the actual file name of the library. For example on Unix, if
 143    --  Lib_Filename is "toto" and Lib_Version is "libtoto.so.2.1",
 144    --  "libtoto.so" will be a symbolic link to "libtoto.so.2.1" which
 145    --  will be the actual library file.
 146    --
 147    --  Relocatable indicates if the library should be relocatable or not,
 148    --  for those OSes that actually support non relocatable dynamic libraries.
 149    --  Relocatable indicates that automatic elaboration/finalization must be
 150    --  indicated to the linker, if possible.
 151    --
 152    --  Symbol_Data is used for some patforms, including VMS, to generate
 153    --  the symbols to be exported by the library.
 154    --
 155    --  Note: Depending on the OS, some of the parameters may not be taken
 156    --  into account. For example, on Linux, Foreign, Afiles Lib_Address and
 157    --  Relocatable are ignored.
 158
 159    function Library_Exists_For (Project : Project_Id) return Boolean;
 160    --  Return True if the library file for a library project already exists.
 161    --  This function can only be called for library projects.
 162
 163    function Library_File_Name_For (Project : Project_Id) return Name_Id;
 164    --  Returns the file name of the library file of a library project.
 165    --  This function can only be called for library projects.
 166
 167 end MLib.Tgt;