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) 2001-2009, AdaCore                     --
  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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 --  This package provides a set of target dependent routines to build static,
  27 --  dynamic and shared libraries. There are several packages providing
  28 --  the actual routines. This package calls them indirectly by means of
  29 --  access-to-subprogram values. Each target-dependent package initializes
  30 --  these values in its elaboration block.
  31
  32 with Prj; use Prj;
  33
  34 package MLib.Tgt is
  35
  36    function Support_For_Libraries return Library_Support;
  37    --  Indicates how building libraries by gnatmake is supported by the GNAT
  38    --  implementation for the platform.
  39
  40    function Standalone_Library_Auto_Init_Is_Supported return Boolean;
  41    --  Indicates if when building a dynamic Standalone Library,
  42    --  automatic initialization is supported. If it is, then it is the default,
  43    --  unless attribute Library_Auto_Init has the value "false".
  44
  45    function Archive_Builder return String;
  46    --  Returns the name of the archive builder program, usually "ar"
  47
  48    function Archive_Builder_Options return String_List_Access;
  49    --  A list of options to invoke the Archive_Builder, usually "cr" for "ar"
  50
  51    function Archive_Builder_Append_Options return String_List_Access;
  52    --  A list of options to use with the archive builder to append object
  53    --  files ("q", for example).
  54
  55    function Archive_Indexer return String;
  56    --  Returns the name of the program, if any, that generates an index to the
  57    --  contents of an archive, usually "ranlib". If there is no archive indexer
  58    --  to be used, returns an empty string.
  59
  60    function Archive_Indexer_Options return String_List_Access;
  61    --  A list of options to invoke the Archive_Indexer, usually empty
  62
  63    function Dynamic_Option return String;
  64    --  gcc option to create a dynamic library.
  65    --  For Unix, returns "-shared", for Windows returns "-mdll".
  66
  67    function Libgnat return String;
  68    --  System dependent static GNAT library
  69
  70    function Archive_Ext return  String;
  71    --  System dependent static library extension, without leading dot.
  72    --  For Unix and Windows, return "a".
  73
  74    function Object_Ext return String;
  75    --  System dependent object extension, without leading dot.
  76    --  On Unix, returns "o".
  77
  78    function DLL_Prefix return String;
  79    --  System dependent dynamic library prefix.
  80    --  On Windows, returns "". On other platforms, returns "lib".
  81
  82    function DLL_Ext return String;
  83    --  System dependent dynamic library extension, without leading dot.
  84    --  On Windows, returns "dll". On Unix, usually returns "so", but not
  85    --  always, e.g. on HP-UX the extension for shared libraries is "sl".
  86
  87    function PIC_Option return String;
  88    --  Position independent code option
  89
  90    function Is_Object_Ext (Ext : String) return Boolean;
  91    --  Returns True iff Ext is an object file extension
  92
  93    function Is_C_Ext (Ext : String) return Boolean;
  94    --  Returns True iff Ext is a C file extension
  95
  96    function Is_Archive_Ext (Ext : String) return Boolean;
  97    --  Returns True iff Ext is an extension for a library
  98
  99    function Default_Symbol_File_Name return String;
 100    --  Returns the name of the symbol file when Library_Symbol_File is not
 101    --  specified. Return the empty string when symbol files are not supported.
 102
 103    procedure Build_Dynamic_Library
 104      (Ofiles       : Argument_List;
 105       Options      : Argument_List;
 106       Interfaces   : Argument_List;
 107       Lib_Filename : String;
 108       Lib_Dir      : String;
 109       Symbol_Data  : Symbol_Record;
 110       Driver_Name  : Name_Id := No_Name;
 111       Lib_Version  : String  := "";
 112       Auto_Init    : Boolean := False);
 113    --  Build a dynamic/relocatable library
 114    --
 115    --  Ofiles is the list of all object files in the library
 116    --
 117    --  Options is a list of options to be passed to the tool
 118    --  (gcc or other) that effectively builds the dynamic library.
 119    --
 120    --  Interfaces is the list of ALI files for the interfaces of a SAL.
 121    --  It is empty if the library is not a SAL.
 122    --
 123    --  Lib_Filename is the name of the library, without any prefix or
 124    --  extension. For example, on Unix, if Lib_Filename is "toto", the
 125    --  name of the library file will be "libtoto.so".
 126    --
 127    --  Lib_Dir is the directory path where the library will be located
 128    --
 129    --  For OSes that support symbolic links, Lib_Version, if non null,
 130    --  is the actual file name of the library. For example on Unix, if
 131    --  Lib_Filename is "toto" and Lib_Version is "libtoto.so.2.1",
 132    --  "libtoto.so" will be a symbolic link to "libtoto.so.2.1" which
 133    --  will be the actual library file.
 134    --
 135    --  Symbol_Data is used for some platforms, including VMS, to generate
 136    --  the symbols to be exported by the library.
 137    --
 138    --  Note: Depending on the OS, some of the parameters may not be taken into
 139    --  account. For example, on Linux, Interfaces, Symbol_Data and Auto_Init
 140    --  are ignored.
 141
 142    function Library_Exists_For
 143      (Project : Project_Id;
 144       In_Tree : Project_Tree_Ref) return Boolean;
 145    --  Return True if the library file for a library project already exists.
 146    --  This function can only be called for library projects.
 147
 148    function Library_File_Name_For
 149      (Project : Project_Id;
 150       In_Tree : Project_Tree_Ref) return File_Name_Type;
 151    --  Returns the file name of the library file of a library project.
 152    --  This function can only be called for library projects.
 153
 154    function Library_Major_Minor_Id_Supported return Boolean;
 155    --  Indicates if major and minor ids are supported for libraries.
 156    --  If they are supported, then a Library_Version such as libtoto.so.1.2
 157    --  will have a major id of 1 and a minor id of 2. Then libtoto.so,
 158    --  libtoto.so.1 and libtoto.so.1.2 will be created, all three designating
 159    --  the same file.
 160
 161 private
 162    No_Argument_List : constant Argument_List := (1 .. 0 => null);
 163
 164    --  Access to subprogram types for indirection
 165
 166    type String_Function is access function return String;
 167    type Is_Ext_Function is access function (Ext : String) return Boolean;
 168    type String_List_Access_Function is access function
 169      return String_List_Access;
 170
 171    type Build_Dynamic_Library_Function is access procedure
 172      (Ofiles       : Argument_List;
 173       Options      : Argument_List;
 174       Interfaces   : Argument_List;
 175       Lib_Filename : String;
 176       Lib_Dir      : String;
 177       Symbol_Data  : Symbol_Record;
 178       Driver_Name  : Name_Id := No_Name;
 179       Lib_Version  : String  := "";
 180       Auto_Init    : Boolean := False);
 181
 182    type Library_Exists_For_Function is access function
 183      (Project : Project_Id;
 184       In_Tree : Project_Tree_Ref) return Boolean;
 185
 186    type Library_File_Name_For_Function is access function
 187      (Project : Project_Id;
 188       In_Tree : Project_Tree_Ref) return File_Name_Type;
 189
 190    type Boolean_Function is access function return Boolean;
 191    type Library_Support_Function is access function return Library_Support;
 192
 193    function Archive_Builder_Default return String;
 194    Archive_Builder_Ptr : String_Function := Archive_Builder_Default'Access;
 195
 196    function Archive_Builder_Options_Default return String_List_Access;
 197    Archive_Builder_Options_Ptr : String_List_Access_Function :=
 198                                    Archive_Builder_Options_Default'Access;
 199
 200    function Archive_Builder_Append_Options_Default return String_List_Access;
 201    Archive_Builder_Append_Options_Ptr : String_List_Access_Function :=
 202                                 Archive_Builder_Append_Options_Default'Access;
 203
 204    function Archive_Ext_Default return String;
 205    Archive_Ext_Ptr : String_Function := Archive_Ext_Default'Access;
 206
 207    function Archive_Indexer_Default return String;
 208    Archive_Indexer_Ptr : String_Function := Archive_Indexer_Default'Access;
 209
 210    function Archive_Indexer_Options_Default return String_List_Access;
 211    Archive_Indexer_Options_Ptr : String_List_Access_Function :=
 212                                    Archive_Indexer_Options_Default'Access;
 213
 214    function Default_Symbol_File_Name_Default return String;
 215    Default_Symbol_File_Name_Ptr : String_Function :=
 216                                     Default_Symbol_File_Name_Default'Access;
 217
 218    Build_Dynamic_Library_Ptr : Build_Dynamic_Library_Function;
 219
 220    function DLL_Ext_Default return String;
 221    DLL_Ext_Ptr : String_Function := DLL_Ext_Default'Access;
 222
 223    function DLL_Prefix_Default return String;
 224    DLL_Prefix_Ptr : String_Function := DLL_Prefix_Default'Access;
 225
 226    function Dynamic_Option_Default return String;
 227    Dynamic_Option_Ptr : String_Function := Dynamic_Option_Default'Access;
 228
 229    function Is_Object_Ext_Default (Ext : String) return Boolean;
 230    Is_Object_Ext_Ptr : Is_Ext_Function := Is_Object_Ext_Default'Access;
 231
 232    function Is_C_Ext_Default (Ext : String) return Boolean;
 233    Is_C_Ext_Ptr : Is_Ext_Function := Is_C_Ext_Default'Access;
 234
 235    function Is_Archive_Ext_Default (Ext : String) return Boolean;
 236    Is_Archive_Ext_Ptr : Is_Ext_Function := Is_Archive_Ext_Default'Access;
 237
 238    function Libgnat_Default return String;
 239    Libgnat_Ptr : String_Function := Libgnat_Default'Access;
 240
 241    function Library_Exists_For_Default
 242      (Project : Project_Id;
 243       In_Tree : Project_Tree_Ref) return Boolean;
 244    Library_Exists_For_Ptr : Library_Exists_For_Function :=
 245                               Library_Exists_For_Default'Access;
 246
 247    function Library_File_Name_For_Default
 248      (Project : Project_Id;
 249       In_Tree : Project_Tree_Ref) return File_Name_Type;
 250    Library_File_Name_For_Ptr : Library_File_Name_For_Function :=
 251                                  Library_File_Name_For_Default'Access;
 252
 253    function Object_Ext_Default return String;
 254    Object_Ext_Ptr : String_Function := Object_Ext_Default'Access;
 255
 256    function PIC_Option_Default return String;
 257    PIC_Option_Ptr : String_Function := PIC_Option_Default'Access;
 258
 259    function Standalone_Library_Auto_Init_Is_Supported_Default return Boolean;
 260    Standalone_Library_Auto_Init_Is_Supported_Ptr : Boolean_Function :=
 261             Standalone_Library_Auto_Init_Is_Supported_Default'Access;
 262
 263    function Support_For_Libraries_Default return Library_Support;
 264    Support_For_Libraries_Ptr : Library_Support_Function :=
 265                                  Support_For_Libraries_Default'Access;
 266
 267    function Library_Major_Minor_Id_Supported_Default return Boolean;
 268    Library_Major_Minor_Id_Supported_Ptr : Boolean_Function :=
 269              Library_Major_Minor_Id_Supported_Default'Access;
 270 end MLib.Tgt;