1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- G N A T L I N K -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1996-2013, Free Software Foundation, 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 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-- Gnatlink usage: please consult the gnat documentation 27 28with ALI; use ALI; 29with Csets; 30with Gnatvsn; use Gnatvsn; 31with Hostparm; 32with Indepsw; use Indepsw; 33with Namet; use Namet; 34with Opt; 35with Osint; use Osint; 36with Output; use Output; 37with Snames; 38with Switch; use Switch; 39with System; use System; 40with Table; 41with Targparm; use Targparm; 42with Types; 43 44with Ada.Command_Line; use Ada.Command_Line; 45with Ada.Exceptions; use Ada.Exceptions; 46 47with System.OS_Lib; use System.OS_Lib; 48with System.CRTL; 49 50with Interfaces.C_Streams; use Interfaces.C_Streams; 51with Interfaces.C.Strings; use Interfaces.C.Strings; 52 53procedure Gnatlink is 54 pragma Ident (Gnatvsn.Gnat_Static_Version_String); 55 56 Shared_Libgcc_String : constant String := "-shared-libgcc"; 57 Shared_Libgcc : constant String_Access := 58 new String'(Shared_Libgcc_String); 59 -- Used to invoke gcc when the binder is invoked with -shared 60 61 Static_Libgcc_String : constant String := "-static-libgcc"; 62 Static_Libgcc : constant String_Access := 63 new String'(Static_Libgcc_String); 64 -- Used to invoke gcc when shared libs are not used 65 66 package Gcc_Linker_Options is new Table.Table ( 67 Table_Component_Type => String_Access, 68 Table_Index_Type => Integer, 69 Table_Low_Bound => 1, 70 Table_Initial => 20, 71 Table_Increment => 100, 72 Table_Name => "Gnatlink.Gcc_Linker_Options"); 73 -- Comments needed ??? 74 75 package Libpath is new Table.Table ( 76 Table_Component_Type => Character, 77 Table_Index_Type => Integer, 78 Table_Low_Bound => 1, 79 Table_Initial => 4096, 80 Table_Increment => 100, 81 Table_Name => "Gnatlink.Libpath"); 82 -- Comments needed ??? 83 84 package Linker_Options is new Table.Table ( 85 Table_Component_Type => String_Access, 86 Table_Index_Type => Integer, 87 Table_Low_Bound => 1, 88 Table_Initial => 20, 89 Table_Increment => 100, 90 Table_Name => "Gnatlink.Linker_Options"); 91 -- Comments needed ??? 92 93 package Linker_Objects is new Table.Table ( 94 Table_Component_Type => String_Access, 95 Table_Index_Type => Integer, 96 Table_Low_Bound => 1, 97 Table_Initial => 20, 98 Table_Increment => 100, 99 Table_Name => "Gnatlink.Linker_Objects"); 100 -- This table collects the objects file to be passed to the linker. In the 101 -- case where the linker command line is too long then programs objects 102 -- are put on the Response_File_Objects table. Note that the binder object 103 -- file and the user's objects remain in this table. This is very 104 -- important because on the GNU linker command line the -L switch is not 105 -- used to look for objects files but -L switch is used to look for 106 -- objects listed in the response file. This is not a problem with the 107 -- applications objects as they are specified with a full name. 108 109 package Response_File_Objects is new Table.Table ( 110 Table_Component_Type => String_Access, 111 Table_Index_Type => Integer, 112 Table_Low_Bound => 1, 113 Table_Initial => 20, 114 Table_Increment => 100, 115 Table_Name => "Gnatlink.Response_File_Objects"); 116 -- This table collects the objects file that are to be put in the response 117 -- file. Only application objects are collected there (see details in 118 -- Linker_Objects table comments) 119 120 package Binder_Options_From_ALI is new Table.Table ( 121 Table_Component_Type => String_Access, 122 Table_Index_Type => Integer, 123 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn 124 Table_Initial => 20, 125 Table_Increment => 100, 126 Table_Name => "Gnatlink.Binder_Options_From_ALI"); 127 -- This table collects the switches from the ALI file of the main 128 -- subprogram. 129 130 package Binder_Options is new Table.Table ( 131 Table_Component_Type => String_Access, 132 Table_Index_Type => Integer, 133 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn 134 Table_Initial => 20, 135 Table_Increment => 100, 136 Table_Name => "Gnatlink.Binder_Options"); 137 -- This table collects the arguments to be passed to compile the binder 138 -- generated file. 139 140 Gcc : String_Access := Program_Name ("gcc", "gnatlink"); 141 142 Read_Mode : constant String := "r" & ASCII.NUL; 143 144 Begin_Info : constant String := "-- BEGIN Object file/option list"; 145 End_Info : constant String := "-- END Object file/option list "; 146 147 Gcc_Path : String_Access; 148 Linker_Path : String_Access; 149 Output_File_Name : String_Access; 150 Ali_File_Name : String_Access; 151 Binder_Spec_Src_File : String_Access; 152 Binder_Body_Src_File : String_Access; 153 Binder_Ali_File : String_Access; 154 Binder_Obj_File : String_Access; 155 156 Tname : Temp_File_Name; 157 Tname_FD : File_Descriptor := Invalid_FD; 158 -- Temporary file used by linker to pass list of object files on 159 -- certain systems with limitations on size of arguments. 160 161 Debug_Flag_Present : Boolean := False; 162 Verbose_Mode : Boolean := False; 163 Very_Verbose_Mode : Boolean := False; 164 165 Standard_Gcc : Boolean := True; 166 167 Compile_Bind_File : Boolean := True; 168 -- Set to False if bind file is not to be compiled 169 170 Create_Map_File : Boolean := False; 171 -- Set to True by switch -M. The map file name is derived from 172 -- the ALI file name (mainprog.ali => mainprog.map). 173 174 Object_List_File_Supported : Boolean; 175 for Object_List_File_Supported'Size use Character'Size; 176 pragma Import 177 (C, Object_List_File_Supported, "__gnat_objlist_file_supported"); 178 -- Predicate indicating whether the linker has an option whereby the 179 -- names of object files can be passed to the linker in a file. 180 181 Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr; 182 pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option"); 183 -- Pointer to a string representing the linker option which specifies 184 -- the response file. 185 186 Object_File_Option : constant String := Value (Object_File_Option_Ptr); 187 -- The linker option which specifies the response file as a string 188 189 Using_GNU_response_file : constant Boolean := 190 Object_File_Option'Length > 0 191 and then Object_File_Option (Object_File_Option'Last) = '@'; 192 -- Whether a GNU response file is used 193 194 Object_List_File_Required : Boolean := False; 195 -- Set to True to force generation of a response file 196 197 Shared_Libgcc_Default : Character; 198 for Shared_Libgcc_Default'Size use Character'Size; 199 pragma Import 200 (C, Shared_Libgcc_Default, "__gnat_shared_libgcc_default"); 201 -- Indicates wether libgcc should be statically linked (use 'T') or 202 -- dynamically linked (use 'H') by default. 203 204 function Base_Name (File_Name : String) return String; 205 -- Return just the file name part without the extension (if present) 206 207 procedure Check_Existing_Executable (File_Name : String); 208 -- Delete any existing executable to avoid accidentally updating the target 209 -- of a symbolic link, but produce a Fatail_Error if File_Name matches any 210 -- of the source file names. This avoids overwriting of extensionless 211 -- source files by accident on systems where executables do not have 212 -- extensions. 213 214 procedure Delete (Name : String); 215 -- Wrapper to unlink as status is ignored by this application 216 217 procedure Error_Msg (Message : String); 218 -- Output the error or warning Message 219 220 procedure Exit_With_Error (Error : String); 221 -- Output Error and exit program with a fatal condition 222 223 procedure Process_Args; 224 -- Go through all the arguments and build option tables 225 226 procedure Process_Binder_File (Name : String); 227 -- Reads the binder file and extracts linker arguments 228 229 procedure Usage; 230 -- Display usage 231 232 procedure Write_Header; 233 -- Show user the program name, version and copyright 234 235 procedure Write_Usage; 236 -- Show user the program options 237 238 --------------- 239 -- Base_Name -- 240 --------------- 241 242 function Base_Name (File_Name : String) return String is 243 Findex1 : Natural; 244 Findex2 : Natural; 245 246 begin 247 Findex1 := File_Name'First; 248 249 -- The file might be specified by a full path name. However, 250 -- we want the path to be stripped away. 251 252 for J in reverse File_Name'Range loop 253 if Is_Directory_Separator (File_Name (J)) then 254 Findex1 := J + 1; 255 exit; 256 end if; 257 end loop; 258 259 Findex2 := File_Name'Last; 260 while Findex2 > Findex1 261 and then File_Name (Findex2) /= '.' 262 loop 263 Findex2 := Findex2 - 1; 264 end loop; 265 266 if Findex2 = Findex1 then 267 Findex2 := File_Name'Last + 1; 268 end if; 269 270 return File_Name (Findex1 .. Findex2 - 1); 271 end Base_Name; 272 273 ------------------------------- 274 -- Check_Existing_Executable -- 275 ------------------------------- 276 277 procedure Check_Existing_Executable (File_Name : String) is 278 Ename : String := File_Name; 279 Efile : File_Name_Type; 280 Sfile : File_Name_Type; 281 282 begin 283 Canonical_Case_File_Name (Ename); 284 Name_Len := 0; 285 Add_Str_To_Name_Buffer (Ename); 286 Efile := Name_Find; 287 288 for J in Units.Table'First .. Units.Last loop 289 Sfile := Units.Table (J).Sfile; 290 if Sfile = Efile then 291 Exit_With_Error ("executable name """ & File_Name & """ matches " 292 & "source file name """ & Get_Name_String (Sfile) & """"); 293 end if; 294 end loop; 295 296 Delete (File_Name); 297 end Check_Existing_Executable; 298 299 ------------ 300 -- Delete -- 301 ------------ 302 303 procedure Delete (Name : String) is 304 Status : int; 305 pragma Unreferenced (Status); 306 begin 307 Status := unlink (Name'Address); 308 -- Is it really right to ignore an error here ??? 309 end Delete; 310 311 --------------- 312 -- Error_Msg -- 313 --------------- 314 315 procedure Error_Msg (Message : String) is 316 begin 317 Write_Str (Base_Name (Command_Name)); 318 Write_Str (": "); 319 Write_Str (Message); 320 Write_Eol; 321 end Error_Msg; 322 323 --------------------- 324 -- Exit_With_Error -- 325 --------------------- 326 327 procedure Exit_With_Error (Error : String) is 328 begin 329 Error_Msg (Error); 330 Exit_Program (E_Fatal); 331 end Exit_With_Error; 332 333 ------------------ 334 -- Process_Args -- 335 ------------------ 336 337 procedure Process_Args is 338 Next_Arg : Integer; 339 Skip_Next : Boolean := False; 340 -- Set to true if the next argument is to be added into the list of 341 -- linker's argument without parsing it. 342 343 procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage); 344 345 -- Start of processing for Process_Args 346 347 begin 348 -- First, check for --version and --help 349 350 Check_Version_And_Help ("GNATLINK", "1995"); 351 352 -- Loop through arguments of gnatlink command 353 354 Next_Arg := 1; 355 loop 356 exit when Next_Arg > Argument_Count; 357 358 Process_One_Arg : declare 359 Arg : constant String := Argument (Next_Arg); 360 361 begin 362 -- Case of argument which is a switch 363 364 -- We definitely need section by section comments here ??? 365 366 if Skip_Next then 367 368 -- This argument must not be parsed, just add it to the 369 -- list of linker's options. 370 371 Skip_Next := False; 372 373 Linker_Options.Increment_Last; 374 Linker_Options.Table (Linker_Options.Last) := 375 new String'(Arg); 376 377 elsif Arg'Length /= 0 and then Arg (1) = '-' then 378 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then 379 Exit_With_Error 380 ("invalid switch: """ & Arg & """ (gnat not needed here)"); 381 end if; 382 383 if Arg = "-Xlinker" then 384 385 -- Next argument should be sent directly to the linker. 386 -- We do not want to parse it here. 387 388 Skip_Next := True; 389 390 Linker_Options.Increment_Last; 391 Linker_Options.Table (Linker_Options.Last) := 392 new String'(Arg); 393 394 elsif Arg (2) = 'g' 395 and then (Arg'Length < 5 or else Arg (2 .. 5) /= "gnat") 396 then 397 Debug_Flag_Present := True; 398 399 Linker_Options.Increment_Last; 400 Linker_Options.Table (Linker_Options.Last) := 401 new String'(Arg); 402 403 Binder_Options.Increment_Last; 404 Binder_Options.Table (Binder_Options.Last) := 405 Linker_Options.Table (Linker_Options.Last); 406 407 elsif Arg'Length >= 3 and then Arg (2) = 'M' then 408 declare 409 Switches : String_List_Access; 410 411 begin 412 Convert (Map_File, Arg (3 .. Arg'Last), Switches); 413 414 if Switches /= null then 415 for J in Switches'Range loop 416 Linker_Options.Increment_Last; 417 Linker_Options.Table (Linker_Options.Last) := 418 Switches (J); 419 end loop; 420 end if; 421 end; 422 423 elsif Arg'Length = 2 then 424 case Arg (2) is 425 when 'b' => 426 Linker_Options.Increment_Last; 427 Linker_Options.Table (Linker_Options.Last) := 428 new String'(Arg); 429 430 Binder_Options.Increment_Last; 431 Binder_Options.Table (Binder_Options.Last) := 432 Linker_Options.Table (Linker_Options.Last); 433 434 Next_Arg := Next_Arg + 1; 435 436 if Next_Arg > Argument_Count then 437 Exit_With_Error ("Missing argument for -b"); 438 end if; 439 440 Get_Machine_Name : declare 441 Name_Arg : constant String_Access := 442 new String'(Argument (Next_Arg)); 443 444 begin 445 Linker_Options.Increment_Last; 446 Linker_Options.Table (Linker_Options.Last) := 447 Name_Arg; 448 449 Binder_Options.Increment_Last; 450 Binder_Options.Table (Binder_Options.Last) := 451 Name_Arg; 452 453 end Get_Machine_Name; 454 455 when 'f' => 456 if Object_List_File_Supported then 457 Object_List_File_Required := True; 458 else 459 Exit_With_Error 460 ("Object list file not supported on this target"); 461 end if; 462 463 when 'M' => 464 Create_Map_File := True; 465 466 when 'n' => 467 Compile_Bind_File := False; 468 469 when 'o' => 470 Next_Arg := Next_Arg + 1; 471 472 if Next_Arg > Argument_Count then 473 Exit_With_Error ("Missing argument for -o"); 474 end if; 475 476 Output_File_Name := 477 new String'(Executable_Name 478 (Argument (Next_Arg), 479 Only_If_No_Suffix => True)); 480 481 when 'P' => 482 Opt.CodePeer_Mode := True; 483 484 when 'R' => 485 Opt.Run_Path_Option := False; 486 487 when 'v' => 488 489 -- Support "double" verbose mode. Second -v 490 -- gets sent to the linker and binder phases. 491 492 if Verbose_Mode then 493 Very_Verbose_Mode := True; 494 495 Linker_Options.Increment_Last; 496 Linker_Options.Table (Linker_Options.Last) := 497 new String'(Arg); 498 499 Binder_Options.Increment_Last; 500 Binder_Options.Table (Binder_Options.Last) := 501 Linker_Options.Table (Linker_Options.Last); 502 503 else 504 Verbose_Mode := True; 505 506 end if; 507 508 when others => 509 Linker_Options.Increment_Last; 510 Linker_Options.Table (Linker_Options.Last) := 511 new String'(Arg); 512 513 end case; 514 515 elsif Arg (2) = 'B' then 516 Linker_Options.Increment_Last; 517 Linker_Options.Table (Linker_Options.Last) := 518 new String'(Arg); 519 520 Binder_Options.Increment_Last; 521 Binder_Options.Table (Binder_Options.Last) := 522 Linker_Options.Table (Linker_Options.Last); 523 524 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then 525 if Arg'Length = 7 then 526 Exit_With_Error ("Missing argument for --LINK="); 527 end if; 528 529 Linker_Path := 530 System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last)); 531 532 if Linker_Path = null then 533 Exit_With_Error 534 ("Could not locate linker: " & Arg (8 .. Arg'Last)); 535 end if; 536 537 elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then 538 declare 539 Program_Args : constant Argument_List_Access := 540 Argument_String_To_List 541 (Arg (7 .. Arg'Last)); 542 543 begin 544 if Program_Args.all (1).all /= Gcc.all then 545 Gcc := new String'(Program_Args.all (1).all); 546 Standard_Gcc := False; 547 end if; 548 549 -- Set appropriate flags for switches passed 550 551 for J in 2 .. Program_Args.all'Last loop 552 declare 553 Arg : constant String := Program_Args.all (J).all; 554 AF : constant Integer := Arg'First; 555 556 begin 557 if Arg'Length /= 0 and then Arg (AF) = '-' then 558 if Arg (AF + 1) = 'g' 559 and then (Arg'Length = 2 560 or else Arg (AF + 2) in '0' .. '3' 561 or else Arg (AF + 2 .. Arg'Last) = "coff") 562 then 563 Debug_Flag_Present := True; 564 end if; 565 end if; 566 567 -- Add directory to source search dirs so that 568 -- Get_Target_Parameters can find system.ads 569 570 if Arg (AF .. AF + 1) = "-I" 571 and then Arg'Length > 2 572 then 573 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last)); 574 end if; 575 576 -- Pass to gcc for compiling binder generated file 577 -- No use passing libraries, it will just generate 578 -- a warning 579 580 if not (Arg (AF .. AF + 1) = "-l" 581 or else Arg (AF .. AF + 1) = "-L") 582 then 583 Binder_Options.Increment_Last; 584 Binder_Options.Table (Binder_Options.Last) := 585 new String'(Arg); 586 end if; 587 588 -- Pass to gcc for linking program 589 590 Gcc_Linker_Options.Increment_Last; 591 Gcc_Linker_Options.Table 592 (Gcc_Linker_Options.Last) := new String'(Arg); 593 end; 594 end loop; 595 end; 596 597 -- Send all multi-character switches not recognized as 598 -- a special case by gnatlink to the linker/loader stage. 599 600 else 601 Linker_Options.Increment_Last; 602 Linker_Options.Table (Linker_Options.Last) := 603 new String'(Arg); 604 end if; 605 606 -- Here if argument is a file name rather than a switch 607 608 else 609 -- If explicit ali file, capture it 610 611 if Arg'Length > 4 612 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali" 613 then 614 if Ali_File_Name = null then 615 Ali_File_Name := new String'(Arg); 616 else 617 Exit_With_Error ("cannot handle more than one ALI file"); 618 end if; 619 620 -- If target object file, record object file 621 622 elsif Arg'Length > Get_Target_Object_Suffix.all'Length 623 and then Arg 624 (Arg'Last - 625 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last) 626 = Get_Target_Object_Suffix.all 627 then 628 Linker_Objects.Increment_Last; 629 Linker_Objects.Table (Linker_Objects.Last) := 630 new String'(Arg); 631 632 -- If host object file, record object file 633 -- e.g. accept foo.o as well as foo.obj on VMS target 634 635 elsif Arg'Length > Get_Object_Suffix.all'Length 636 and then Arg 637 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last) 638 = Get_Object_Suffix.all 639 then 640 Linker_Objects.Increment_Last; 641 Linker_Objects.Table (Linker_Objects.Last) := 642 new String'(Arg); 643 644 -- If corresponding ali file exists, capture it 645 646 elsif Ali_File_Name = null 647 and then Is_Regular_File (Arg & ".ali") 648 then 649 Ali_File_Name := new String'(Arg & ".ali"); 650 651 -- Otherwise assume this is a linker options entry, but 652 -- see below for interesting adjustment to this assumption. 653 654 else 655 Linker_Options.Increment_Last; 656 Linker_Options.Table (Linker_Options.Last) := 657 new String'(Arg); 658 end if; 659 end if; 660 end Process_One_Arg; 661 662 Next_Arg := Next_Arg + 1; 663 end loop; 664 665 -- Compile the bind file with warnings suppressed, because 666 -- otherwise the with of the main program may cause junk warnings. 667 668 Binder_Options.Increment_Last; 669 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws"); 670 671 -- If we did not get an ali file at all, and we had at least one 672 -- linker option, then assume that was the intended ali file after 673 -- all, so that we get a nicer message later on. 674 675 if Ali_File_Name = null 676 and then Linker_Options.Last >= Linker_Options.First 677 then 678 Ali_File_Name := 679 new String'(Linker_Options.Table (Linker_Options.First).all & 680 ".ali"); 681 end if; 682 end Process_Args; 683 684 ------------------------- 685 -- Process_Binder_File -- 686 ------------------------- 687 688 procedure Process_Binder_File (Name : String) is 689 Fd : FILEs; 690 -- Binder file's descriptor 691 692 Link_Bytes : Integer := 0; 693 -- Projected number of bytes for the linker command line 694 695 Link_Max : Integer; 696 pragma Import (C, Link_Max, "__gnat_link_max"); 697 -- Maximum number of bytes on the command line supported by the OS 698 -- linker. Passed this limit the response file mechanism must be used 699 -- if supported. 700 701 Next_Line : String (1 .. 1000); 702 -- Current line value 703 704 Nlast : Integer; 705 Nfirst : Integer; 706 -- Current line slice (the slice does not contain line terminator) 707 708 Last : Integer; 709 -- Current line last character for shared libraries (without version) 710 711 Objs_Begin : Integer := 0; 712 -- First object file index in Linker_Objects table 713 714 Objs_End : Integer := 0; 715 -- Last object file index in Linker_Objects table 716 717 Status : int; 718 pragma Warnings (Off, Status); 719 -- Used for various Interfaces.C_Streams calls 720 721 Closing_Status : Boolean; 722 pragma Warnings (Off, Closing_Status); 723 -- For call to Close 724 725 GNAT_Static : Boolean := False; 726 -- Save state of -static option 727 728 GNAT_Shared : Boolean := False; 729 -- Save state of -shared option 730 731 Xlinker_Was_Previous : Boolean := False; 732 -- Indicate that "-Xlinker" was the option preceding the current 733 -- option. If True, then the current option is never suppressed. 734 735 -- Rollback data 736 737 -- These data items are used to store current binder file context. 738 -- The context is composed of the file descriptor position and the 739 -- current line together with the slice indexes (first and last 740 -- position) for this line. The rollback data are used by the 741 -- Store_File_Context and Rollback_File_Context routines below. 742 -- The file context mechanism interact only with the Get_Next_Line 743 -- call. For example: 744 745 -- Store_File_Context; 746 -- Get_Next_Line; 747 -- Rollback_File_Context; 748 -- Get_Next_Line; 749 750 -- Both Get_Next_Line calls above will read the exact same data from 751 -- the file. In other words, Next_Line, Nfirst and Nlast variables 752 -- will be set with the exact same values. 753 754 RB_File_Pos : long; -- File position 755 RB_Next_Line : String (1 .. 1000); -- Current line content 756 RB_Nlast : Integer; -- Slice last index 757 RB_Nfirst : Integer; -- Slice first index 758 759 Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr; 760 pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option"); 761 -- Pointer to string representing the native linker option which 762 -- specifies the path where the dynamic loader should find shared 763 -- libraries. Equal to null string if this system doesn't support it. 764 765 Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr; 766 pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir"); 767 -- Pointer to string indicating the installation subdirectory where 768 -- a default shared libgcc might be found. 769 770 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr; 771 pragma Import 772 (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension"); 773 -- Pointer to string specifying the default extension for 774 -- object libraries, e.g. Unix uses ".a", VMS uses ".olb". 775 776 Separate_Run_Path_Options : Boolean; 777 for Separate_Run_Path_Options'Size use Character'Size; 778 pragma Import 779 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options"); 780 -- Whether separate rpath options should be emitted for each directory 781 782 procedure Get_Next_Line; 783 -- Read the next line from the binder file without the line 784 -- terminator. 785 786 function Index (S, Pattern : String) return Natural; 787 -- Return the last occurrence of Pattern in S, or 0 if none 788 789 function Is_Option_Present (Opt : String) return Boolean; 790 -- Return true if the option Opt is already present in 791 -- Linker_Options table. 792 793 procedure Store_File_Context; 794 -- Store current file context, Fd position and current line data. 795 -- The file context is stored into the rollback data above (RB_*). 796 -- Store_File_Context can be called at any time, only the last call 797 -- will be used (i.e. this routine overwrites the file context). 798 799 procedure Rollback_File_Context; 800 -- Restore file context from rollback data. This routine must be called 801 -- after Store_File_Context. The binder file context will be restored 802 -- with the data stored by the last Store_File_Context call. 803 804 procedure Write_RF (S : String); 805 -- Write a string to the response file and check if it was successful. 806 -- Fail the program if it was not successful (disk full). 807 808 ------------------- 809 -- Get_Next_Line -- 810 ------------------- 811 812 procedure Get_Next_Line is 813 Fchars : chars; 814 815 begin 816 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd); 817 818 if Fchars = System.Null_Address then 819 Exit_With_Error ("Error reading binder output"); 820 end if; 821 822 Nfirst := Next_Line'First; 823 Nlast := Nfirst; 824 while Nlast <= Next_Line'Last 825 and then Next_Line (Nlast) /= ASCII.LF 826 and then Next_Line (Nlast) /= ASCII.CR 827 loop 828 Nlast := Nlast + 1; 829 end loop; 830 831 Nlast := Nlast - 1; 832 end Get_Next_Line; 833 834 ----------- 835 -- Index -- 836 ----------- 837 838 function Index (S, Pattern : String) return Natural is 839 Len : constant Natural := Pattern'Length; 840 841 begin 842 for J in reverse S'First .. S'Last - Len + 1 loop 843 if Pattern = S (J .. J + Len - 1) then 844 return J; 845 end if; 846 end loop; 847 848 return 0; 849 end Index; 850 851 ----------------------- 852 -- Is_Option_Present -- 853 ----------------------- 854 855 function Is_Option_Present (Opt : String) return Boolean is 856 begin 857 for I in 1 .. Linker_Options.Last loop 858 859 if Linker_Options.Table (I).all = Opt then 860 return True; 861 end if; 862 863 end loop; 864 865 return False; 866 end Is_Option_Present; 867 868 --------------------------- 869 -- Rollback_File_Context -- 870 --------------------------- 871 872 procedure Rollback_File_Context is 873 begin 874 Next_Line := RB_Next_Line; 875 Nfirst := RB_Nfirst; 876 Nlast := RB_Nlast; 877 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET); 878 879 if Status = -1 then 880 Exit_With_Error ("Error setting file position"); 881 end if; 882 end Rollback_File_Context; 883 884 ------------------------ 885 -- Store_File_Context -- 886 ------------------------ 887 888 procedure Store_File_Context is 889 use type System.CRTL.long; 890 begin 891 RB_Next_Line := Next_Line; 892 RB_Nfirst := Nfirst; 893 RB_Nlast := Nlast; 894 RB_File_Pos := ftell (Fd); 895 896 if RB_File_Pos = -1 then 897 Exit_With_Error ("Error getting file position"); 898 end if; 899 end Store_File_Context; 900 901 -------------- 902 -- Write_RF -- 903 -------------- 904 905 procedure Write_RF (S : String) is 906 Success : Boolean := True; 907 Back_Slash : constant Character := '\'; 908 909 begin 910 -- If a GNU response file is used, space and backslash need to be 911 -- escaped because they are interpreted as a string separator and 912 -- an escape character respectively by the underlying mechanism. 913 -- On the other hand, quote and double-quote are not escaped since 914 -- they are interpreted as string delimiters on both sides. 915 916 if Using_GNU_response_file then 917 for J in S'Range loop 918 if S (J) = ' ' or else S (J) = '\' then 919 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then 920 Success := False; 921 end if; 922 end if; 923 924 if Write (Tname_FD, S (J)'Address, 1) /= 1 then 925 Success := False; 926 end if; 927 end loop; 928 929 else 930 if Write (Tname_FD, S'Address, S'Length) /= S'Length then 931 Success := False; 932 end if; 933 end if; 934 935 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then 936 Success := False; 937 end if; 938 939 if not Success then 940 Exit_With_Error ("Error generating response file: disk full"); 941 end if; 942 end Write_RF; 943 944 -- Start of processing for Process_Binder_File 945 946 begin 947 Fd := fopen (Name'Address, Read_Mode'Address); 948 949 if Fd = NULL_Stream then 950 Exit_With_Error ("Failed to open binder output"); 951 end if; 952 953 -- Skip up to the Begin Info line 954 955 loop 956 Get_Next_Line; 957 exit when Next_Line (Nfirst .. Nlast) = Begin_Info; 958 end loop; 959 960 loop 961 Get_Next_Line; 962 963 -- Go to end when end line is reached (this will happen in 964 -- High_Integrity_Mode where no -L switches are generated) 965 966 exit when Next_Line (Nfirst .. Nlast) = End_Info; 967 968 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast); 969 Nlast := Nlast - 8; 970 971 -- Go to next section when switches are reached 972 973 exit when Next_Line (1) = '-'; 974 975 -- Otherwise we have another object file to collect 976 977 Linker_Objects.Increment_Last; 978 979 -- Mark the positions of first and last object files in case they 980 -- need to be placed with a named file on systems having linker 981 -- line limitations. 982 983 if Objs_Begin = 0 then 984 Objs_Begin := Linker_Objects.Last; 985 end if; 986 987 Linker_Objects.Table (Linker_Objects.Last) := 988 new String'(Next_Line (Nfirst .. Nlast)); 989 990 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2; 991 -- Nlast - Nfirst + 1, for the size, plus one for the space between 992 -- each arguments. 993 end loop; 994 995 Objs_End := Linker_Objects.Last; 996 997 -- Continue to compute the Link_Bytes, the linker options are part of 998 -- command line length. 999 1000 Store_File_Context; 1001 1002 while Next_Line (Nfirst .. Nlast) /= End_Info loop 1003 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2; 1004 Get_Next_Line; 1005 end loop; 1006 1007 Rollback_File_Context; 1008 1009 -- On systems that have limitations on handling very long linker lines 1010 -- we make use of the system linker option which takes a list of object 1011 -- file names from a file instead of the command line itself. What we do 1012 -- is to replace the list of object files by the special linker option 1013 -- which then reads the object file list from a file instead. The option 1014 -- to read from a file instead of the command line is only triggered if 1015 -- a conservative threshold is passed. 1016 1017 if Object_List_File_Required 1018 or else (Object_List_File_Supported 1019 and then Link_Bytes > Link_Max) 1020 then 1021 -- Create a temporary file containing the Ada user object files 1022 -- needed by the link. This list is taken from the bind file and is 1023 -- output one object per line for maximal compatibility with linkers 1024 -- supporting this option. 1025 1026 Create_Temp_File (Tname_FD, Tname); 1027 1028 -- ??? File descriptor should be checked to not be Invalid_FD. 1029 -- ??? Status of Write and Close operations should be checked, and 1030 -- failure should occur if a status is wrong. 1031 1032 for J in Objs_Begin .. Objs_End loop 1033 Write_RF (Linker_Objects.Table (J).all); 1034 1035 Response_File_Objects.Increment_Last; 1036 Response_File_Objects.Table (Response_File_Objects.Last) := 1037 Linker_Objects.Table (J); 1038 end loop; 1039 1040 Close (Tname_FD, Closing_Status); 1041 1042 -- Add the special objects list file option together with the name 1043 -- of the temporary file (removing the null character) to the objects 1044 -- file table. 1045 1046 Linker_Objects.Table (Objs_Begin) := 1047 new String'(Object_File_Option & 1048 Tname (Tname'First .. Tname'Last - 1)); 1049 1050 -- The slots containing these object file names are then removed 1051 -- from the objects table so they do not appear in the link. They are 1052 -- removed by moving up the linker options and non-Ada object files 1053 -- appearing after the Ada object list in the table. 1054 1055 declare 1056 N : Integer; 1057 1058 begin 1059 N := Objs_End - Objs_Begin + 1; 1060 1061 for J in Objs_End + 1 .. Linker_Objects.Last loop 1062 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J); 1063 end loop; 1064 1065 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1); 1066 end; 1067 end if; 1068 1069 -- Process switches and options 1070 1071 if Next_Line (Nfirst .. Nlast) /= End_Info then 1072 Xlinker_Was_Previous := False; 1073 1074 loop 1075 if Xlinker_Was_Previous 1076 or else Next_Line (Nfirst .. Nlast) = "-Xlinker" 1077 then 1078 Linker_Options.Increment_Last; 1079 Linker_Options.Table (Linker_Options.Last) := 1080 new String'(Next_Line (Nfirst .. Nlast)); 1081 1082 elsif Next_Line (Nfirst .. Nlast) = "-static" then 1083 GNAT_Static := True; 1084 1085 elsif Next_Line (Nfirst .. Nlast) = "-shared" then 1086 GNAT_Shared := True; 1087 1088 -- Add binder options only if not already set on the command line. 1089 -- This rule is a way to control the linker options order. 1090 1091 -- The following test needs comments, why is it VMS specific. 1092 -- The above comment looks out of date ??? 1093 1094 elsif not (OpenVMS_On_Target 1095 and then 1096 Is_Option_Present (Next_Line (Nfirst .. Nlast))) 1097 then 1098 if Nlast > Nfirst + 2 and then 1099 Next_Line (Nfirst .. Nfirst + 1) = "-L" 1100 then 1101 -- Construct a library search path for use later to locate 1102 -- static gnatlib libraries. 1103 1104 if Libpath.Last > 1 then 1105 Libpath.Increment_Last; 1106 Libpath.Table (Libpath.Last) := Path_Separator; 1107 end if; 1108 1109 for I in Nfirst + 2 .. Nlast loop 1110 Libpath.Increment_Last; 1111 Libpath.Table (Libpath.Last) := Next_Line (I); 1112 end loop; 1113 1114 Linker_Options.Increment_Last; 1115 1116 Linker_Options.Table (Linker_Options.Last) := 1117 new String'(Next_Line (Nfirst .. Nlast)); 1118 1119 elsif Next_Line (Nfirst .. Nlast) = "-ldecgnat" 1120 or else Next_Line (Nfirst .. Nlast) = "-lgnarl" 1121 or else Next_Line (Nfirst .. Nlast) = "-lgnat" 1122 or else Next_Line 1123 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) = 1124 Shared_Lib ("gnarl") 1125 or else Next_Line 1126 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) = 1127 Shared_Lib ("gnat") 1128 then 1129 -- If it is a shared library, remove the library version. 1130 -- We will be looking for the static version of the library 1131 -- as it is in the same directory as the shared version. 1132 1133 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast) 1134 = Library_Version 1135 then 1136 -- Set Last to point to last character before the 1137 -- library version. 1138 1139 Last := Nlast - Library_Version'Length - 1; 1140 else 1141 Last := Nlast; 1142 end if; 1143 1144 -- Given a Gnat standard library, search the library path to 1145 -- find the library location. 1146 1147 -- Shouldn't we abstract a proc here, we are getting awfully 1148 -- heavily nested ??? 1149 1150 declare 1151 File_Path : String_Access; 1152 1153 Object_Lib_Extension : constant String := 1154 Value (Object_Library_Ext_Ptr); 1155 1156 File_Name : constant String := "lib" & 1157 Next_Line (Nfirst + 2 .. Last) & 1158 Object_Lib_Extension; 1159 1160 Run_Path_Opt : constant String := 1161 Value (Run_Path_Option_Ptr); 1162 1163 GCC_Index : Natural; 1164 Run_Path_Opt_Index : Natural := 0; 1165 1166 begin 1167 File_Path := 1168 Locate_Regular_File (File_Name, 1169 String (Libpath.Table (1 .. Libpath.Last))); 1170 1171 if File_Path /= null then 1172 if GNAT_Static then 1173 1174 -- If static gnatlib found, explicitly 1175 -- specify to overcome possible linker 1176 -- default usage of shared version. 1177 1178 Linker_Options.Increment_Last; 1179 1180 Linker_Options.Table (Linker_Options.Last) := 1181 new String'(File_Path.all); 1182 1183 elsif GNAT_Shared then 1184 if Opt.Run_Path_Option then 1185 1186 -- If shared gnatlib desired, add the 1187 -- appropriate system specific switch 1188 -- so that it can be located at runtime. 1189 1190 if Run_Path_Opt'Length /= 0 then 1191 1192 -- Output the system specific linker command 1193 -- that allows the image activator to find 1194 -- the shared library at runtime. Also add 1195 -- path to find libgcc_s.so, if relevant. 1196 1197 declare 1198 Path : String (1 .. File_Path'Length + 15); 1199 Path_Last : constant Natural := 1200 File_Path'Length; 1201 1202 begin 1203 Path (1 .. File_Path'Length) := 1204 File_Path.all; 1205 1206 -- To find the location of the shared version 1207 -- of libgcc, we look for "gcc-lib" in the 1208 -- path of the library. However, this 1209 -- subdirectory is no longer present in 1210 -- recent versions of GCC. So, we look for 1211 -- the last subdirectory "lib" in the path. 1212 1213 GCC_Index := 1214 Index (Path (1 .. Path_Last), "gcc-lib"); 1215 1216 if GCC_Index /= 0 then 1217 1218 -- The shared version of libgcc is 1219 -- located in the parent directory. 1220 1221 GCC_Index := GCC_Index - 1; 1222 1223 else 1224 GCC_Index := 1225 Index 1226 (Path (1 .. Path_Last), 1227 "/lib/"); 1228 1229 if GCC_Index = 0 then 1230 GCC_Index := 1231 Index (Path (1 .. Path_Last), 1232 Directory_Separator & 1233 "lib" & 1234 Directory_Separator); 1235 end if; 1236 1237 -- If we have found a "lib" subdir in 1238 -- the path to libgnat, the possible 1239 -- shared libgcc of interest by default 1240 -- is in libgcc_subdir at the same 1241 -- level. 1242 1243 if GCC_Index /= 0 then 1244 declare 1245 Subdir : constant String := 1246 Value (Libgcc_Subdir_Ptr); 1247 begin 1248 Path 1249 (GCC_Index + 1 .. 1250 GCC_Index + Subdir'Length) := 1251 Subdir; 1252 GCC_Index := 1253 GCC_Index + Subdir'Length; 1254 end; 1255 end if; 1256 end if; 1257 1258 -- Look for an eventual run_path_option in 1259 -- the linker switches. 1260 1261 if Separate_Run_Path_Options then 1262 Linker_Options.Increment_Last; 1263 Linker_Options.Table 1264 (Linker_Options.Last) := 1265 new String' 1266 (Run_Path_Opt 1267 & File_Path 1268 (1 .. File_Path'Length 1269 - File_Name'Length)); 1270 1271 if GCC_Index /= 0 then 1272 Linker_Options.Increment_Last; 1273 Linker_Options.Table 1274 (Linker_Options.Last) := 1275 new String' 1276 (Run_Path_Opt 1277 & Path (1 .. GCC_Index)); 1278 end if; 1279 1280 else 1281 for J in reverse 1282 1 .. Linker_Options.Last 1283 loop 1284 if Linker_Options.Table (J) /= null 1285 and then 1286 Linker_Options.Table (J)'Length 1287 > Run_Path_Opt'Length 1288 and then 1289 Linker_Options.Table (J) 1290 (1 .. Run_Path_Opt'Length) = 1291 Run_Path_Opt 1292 then 1293 -- We have found an already 1294 -- specified run_path_option: we 1295 -- will add to this switch, 1296 -- because only one 1297 -- run_path_option should be 1298 -- specified. 1299 1300 Run_Path_Opt_Index := J; 1301 exit; 1302 end if; 1303 end loop; 1304 1305 -- If there is no run_path_option, we 1306 -- need to add one. 1307 1308 if Run_Path_Opt_Index = 0 then 1309 Linker_Options.Increment_Last; 1310 end if; 1311 1312 if GCC_Index = 0 then 1313 if Run_Path_Opt_Index = 0 then 1314 Linker_Options.Table 1315 (Linker_Options.Last) := 1316 new String' 1317 (Run_Path_Opt 1318 & File_Path 1319 (1 .. File_Path'Length 1320 - File_Name'Length)); 1321 1322 else 1323 Linker_Options.Table 1324 (Run_Path_Opt_Index) := 1325 new String' 1326 (Linker_Options.Table 1327 (Run_Path_Opt_Index).all 1328 & Path_Separator 1329 & File_Path 1330 (1 .. File_Path'Length 1331 - File_Name'Length)); 1332 end if; 1333 1334 else 1335 if Run_Path_Opt_Index = 0 then 1336 Linker_Options.Table 1337 (Linker_Options.Last) := 1338 new String' 1339 (Run_Path_Opt 1340 & File_Path 1341 (1 .. File_Path'Length 1342 - File_Name'Length) 1343 & Path_Separator 1344 & Path (1 .. GCC_Index)); 1345 1346 else 1347 Linker_Options.Table 1348 (Run_Path_Opt_Index) := 1349 new String' 1350 (Linker_Options.Table 1351 (Run_Path_Opt_Index).all 1352 & Path_Separator 1353 & File_Path 1354 (1 .. File_Path'Length 1355 - File_Name'Length) 1356 & Path_Separator 1357 & Path (1 .. GCC_Index)); 1358 end if; 1359 end if; 1360 end if; 1361 end; 1362 end if; 1363 end if; 1364 1365 -- Then we add the appropriate -l switch 1366 1367 Linker_Options.Increment_Last; 1368 Linker_Options.Table (Linker_Options.Last) := 1369 new String'(Next_Line (Nfirst .. Nlast)); 1370 end if; 1371 1372 else 1373 -- If gnatlib library not found, then 1374 -- add it anyway in case some other 1375 -- mechanism may find it. 1376 1377 Linker_Options.Increment_Last; 1378 Linker_Options.Table (Linker_Options.Last) := 1379 new String'(Next_Line (Nfirst .. Nlast)); 1380 end if; 1381 end; 1382 else 1383 Linker_Options.Increment_Last; 1384 Linker_Options.Table (Linker_Options.Last) := 1385 new String'(Next_Line (Nfirst .. Nlast)); 1386 end if; 1387 end if; 1388 1389 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker"; 1390 1391 Get_Next_Line; 1392 exit when Next_Line (Nfirst .. Nlast) = End_Info; 1393 1394 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast); 1395 Nlast := Nlast - 8; 1396 end loop; 1397 end if; 1398 1399 -- If -shared was specified, invoke gcc with -shared-libgcc 1400 1401 if GNAT_Shared then 1402 Linker_Options.Increment_Last; 1403 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc; 1404 end if; 1405 1406 Status := fclose (Fd); 1407 end Process_Binder_File; 1408 1409 ----------- 1410 -- Usage -- 1411 ----------- 1412 1413 procedure Usage is 1414 begin 1415 Write_Str ("Usage: "); 1416 Write_Str (Base_Name (Command_Name)); 1417 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]"); 1418 Write_Eol; 1419 Write_Eol; 1420 Write_Line (" mainprog.ali the ALI file of the main program"); 1421 Write_Eol; 1422 Write_Eol; 1423 Display_Usage_Version_And_Help; 1424 Write_Line (" -f Force object file list to be generated"); 1425 Write_Line (" -g Compile binder source file with debug information"); 1426 Write_Line (" -n Do not compile the binder source file"); 1427 Write_Line (" -P Process files for use by CodePeer"); 1428 Write_Line (" -R Do not use a run_path_option"); 1429 Write_Line (" -v Verbose mode"); 1430 Write_Line (" -v -v Very verbose mode"); 1431 Write_Eol; 1432 Write_Line (" -o nam Use 'nam' as the name of the executable"); 1433 Write_Line (" -b target Compile the binder source to run on target"); 1434 Write_Line (" -Bdir Load compiler executables from dir"); 1435 1436 if Is_Supported (Map_File) then 1437 Write_Line (" -Mmap Create map file map"); 1438 Write_Line (" -M Create map file mainprog.map"); 1439 end if; 1440 1441 Write_Line (" --GCC=comp Use comp as the compiler"); 1442 Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'"); 1443 Write_Eol; 1444 Write_Line (" [non-Ada-objects] list of non Ada object files"); 1445 Write_Line (" [linker-options] other options for the linker"); 1446 end Usage; 1447 1448 ------------------ 1449 -- Write_Header -- 1450 ------------------ 1451 1452 procedure Write_Header is 1453 begin 1454 if Verbose_Mode then 1455 Write_Eol; 1456 Display_Version ("GNATLINK", "1995"); 1457 end if; 1458 end Write_Header; 1459 1460 ----------------- 1461 -- Write_Usage -- 1462 ----------------- 1463 1464 procedure Write_Usage is 1465 begin 1466 Write_Header; 1467 Usage; 1468 end Write_Usage; 1469 1470-- Start of processing for Gnatlink 1471 1472begin 1473 -- Add the directory where gnatlink is invoked in front of the path, if 1474 -- gnatlink is invoked with directory information. Only do this if the 1475 -- platform is not VMS, where the notion of path does not really exist. 1476 1477 if not Hostparm.OpenVMS then 1478 declare 1479 Command : constant String := Command_Name; 1480 1481 begin 1482 for Index in reverse Command'Range loop 1483 if Command (Index) = Directory_Separator then 1484 declare 1485 Absolute_Dir : constant String := 1486 Normalize_Pathname 1487 (Command (Command'First .. Index)); 1488 1489 PATH : constant String := 1490 Absolute_Dir & 1491 Path_Separator & 1492 Getenv ("PATH").all; 1493 1494 begin 1495 Setenv ("PATH", PATH); 1496 end; 1497 1498 exit; 1499 end if; 1500 end loop; 1501 end; 1502 end if; 1503 1504 Process_Args; 1505 1506 if Argument_Count = 0 1507 or else (Verbose_Mode and then Argument_Count = 1) 1508 then 1509 Write_Usage; 1510 Exit_Program (E_Fatal); 1511 end if; 1512 1513 -- Initialize packages to be used 1514 1515 Csets.Initialize; 1516 Snames.Initialize; 1517 1518 -- We always compile with -c 1519 1520 Binder_Options_From_ALI.Increment_Last; 1521 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1522 new String'("-c"); 1523 1524 if Ali_File_Name = null then 1525 Exit_With_Error ("no ali file given for link"); 1526 end if; 1527 1528 if not Is_Regular_File (Ali_File_Name.all) then 1529 Exit_With_Error (Ali_File_Name.all & " not found"); 1530 end if; 1531 1532 -- Read the ALI file of the main subprogram if the binder generated file 1533 -- needs to be compiled and no --GCC= switch has been specified. Fetch the 1534 -- back end switches from this ALI file and use these switches to compile 1535 -- the binder generated file 1536 1537 if Compile_Bind_File and then Standard_Gcc then 1538 Initialize_ALI; 1539 Name_Len := Ali_File_Name'Length; 1540 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all; 1541 1542 declare 1543 use Types; 1544 F : constant File_Name_Type := Name_Find; 1545 T : Text_Buffer_Ptr; 1546 A : ALI_Id; 1547 1548 begin 1549 -- Load the ALI file 1550 1551 T := Read_Library_Info (F, True); 1552 1553 -- Read it. Note that we ignore errors, since we only want very 1554 -- limited information from the ali file, and likely a slightly 1555 -- wrong version will be just fine, though in normal operation 1556 -- we don't expect this to happen! 1557 1558 A := Scan_ALI 1559 (F, 1560 T, 1561 Ignore_ED => False, 1562 Err => False, 1563 Ignore_Errors => True); 1564 1565 if A /= No_ALI_Id then 1566 for 1567 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg .. 1568 Units.Table (ALIs.Table (A).First_Unit).Last_Arg 1569 loop 1570 -- Do not compile with the front end switches. However, --RTS 1571 -- is to be dealt with specially because it needs to be passed 1572 -- if the binder-generated file is in Ada and may also be used 1573 -- to drive the linker. 1574 1575 declare 1576 Arg : String_Ptr renames Args.Table (Index); 1577 begin 1578 if not Is_Front_End_Switch (Arg.all) then 1579 Binder_Options_From_ALI.Increment_Last; 1580 Binder_Options_From_ALI.Table 1581 (Binder_Options_From_ALI.Last) := String_Access (Arg); 1582 1583 elsif Arg'Length > 5 1584 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS=" 1585 then 1586 Binder_Options_From_ALI.Increment_Last; 1587 Binder_Options_From_ALI.Table 1588 (Binder_Options_From_ALI.Last) := String_Access (Arg); 1589 1590 -- Set the RTS_*_Path_Name variables, so that 1591 -- the correct directories will be set when 1592 -- Osint.Add_Default_Search_Dirs will be called later. 1593 1594 Opt.RTS_Src_Path_Name := 1595 Get_RTS_Search_Dir 1596 (Arg (Arg'First + 6 .. Arg'Last), Include); 1597 1598 Opt.RTS_Lib_Path_Name := 1599 Get_RTS_Search_Dir 1600 (Arg (Arg'First + 6 .. Arg'Last), Objects); 1601 1602 -- GNAT doesn't support the GCC multilib mechanism. 1603 -- This means that, when a multilib switch is used 1604 -- to request a particular compilation mode, the 1605 -- corresponding runtime switch (--RTS) must also be 1606 -- specified. The long-term goal is to fully support the 1607 -- multilib mechanism; however, in the meantime, it is 1608 -- convenient to eliminate the redundancy by keying the 1609 -- compilation mode on a single switch, namely --RTS. 1610 1611 -- Pass -mrtp to the linker if --RTS=rtp was passed 1612 1613 if Arg'Length > 8 1614 and then 1615 (Arg (Arg'First + 6 .. Arg'First + 8) = "rtp" 1616 or else Arg (Arg'Last - 2 .. Arg'Last) = "rtp") 1617 then 1618 Linker_Options.Increment_Last; 1619 Linker_Options.Table (Linker_Options.Last) := 1620 new String'("-mrtp"); 1621 end if; 1622 end if; 1623 end; 1624 end loop; 1625 end if; 1626 end; 1627 end if; 1628 1629 -- Get target parameters 1630 1631 Osint.Add_Default_Search_Dirs; 1632 Targparm.Get_Target_Parameters; 1633 1634 if VM_Target /= No_VM then 1635 case VM_Target is 1636 when JVM_Target => Gcc := new String'("jvm-gnatcompile"); 1637 when CLI_Target => Gcc := new String'("dotnet-gnatcompile"); 1638 when No_VM => raise Program_Error; 1639 end case; 1640 end if; 1641 1642 -- Compile the bind file with the following switches: 1643 1644 -- -gnatA stops reading gnat.adc, since we don't know what 1645 -- pragmas would work, and we do not need it anyway. 1646 1647 -- -gnatWb allows brackets coding for wide characters 1648 1649 -- -gnatiw allows wide characters in identifiers. This is needed 1650 -- because bindgen uses brackets encoding for all upper 1651 -- half and wide characters in identifier names. 1652 1653 -- In addition, in CodePeer mode compile with -x adascil -gnatcC 1654 1655 Binder_Options_From_ALI.Increment_Last; 1656 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1657 new String'("-gnatA"); 1658 Binder_Options_From_ALI.Increment_Last; 1659 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1660 new String'("-gnatWb"); 1661 Binder_Options_From_ALI.Increment_Last; 1662 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1663 new String'("-gnatiw"); 1664 1665 if Opt.CodePeer_Mode then 1666 Binder_Options_From_ALI.Increment_Last; 1667 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1668 new String'("-x"); 1669 Binder_Options_From_ALI.Increment_Last; 1670 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1671 new String'("adascil"); 1672 Binder_Options_From_ALI.Increment_Last; 1673 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) := 1674 new String'("-gnatcC"); 1675 end if; 1676 1677 -- Locate all the necessary programs and verify required files are present 1678 1679 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all); 1680 1681 if Gcc_Path = null then 1682 Exit_With_Error ("Couldn't locate " & Gcc.all); 1683 end if; 1684 1685 if Linker_Path = null then 1686 if VM_Target = CLI_Target then 1687 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld"); 1688 1689 if Linker_Path = null then 1690 Exit_With_Error ("Couldn't locate dotnet-ld"); 1691 end if; 1692 1693 elsif RTX_RTSS_Kernel_Module_On_Target then 1694 1695 -- Use Microsoft linker for RTSS modules 1696 1697 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link"); 1698 1699 if Linker_Path = null then 1700 Exit_With_Error ("Couldn't locate link"); 1701 end if; 1702 1703 else 1704 Linker_Path := Gcc_Path; 1705 end if; 1706 end if; 1707 1708 Write_Header; 1709 1710 -- If no output name specified, then use the base name of .ali file name 1711 1712 if Output_File_Name = null then 1713 Output_File_Name := 1714 new String'(Base_Name (Ali_File_Name.all) 1715 & Get_Target_Debuggable_Suffix.all); 1716 end if; 1717 1718 if RTX_RTSS_Kernel_Module_On_Target then 1719 Linker_Options.Increment_Last; 1720 Linker_Options.Table (Linker_Options.Last) := 1721 new String'("/OUT:" & Output_File_Name.all); 1722 1723 else 1724 Linker_Options.Increment_Last; 1725 Linker_Options.Table (Linker_Options.Last) := new String'("-o"); 1726 1727 Linker_Options.Increment_Last; 1728 Linker_Options.Table (Linker_Options.Last) := 1729 new String'(Output_File_Name.all); 1730 end if; 1731 1732 Check_Existing_Executable (Output_File_Name.all); 1733 1734 -- Warn if main program is called "test", as that may be a built-in command 1735 -- on Unix. On non-Unix systems executables have a suffix, so the warning 1736 -- will not appear. However, do not warn in the case of a cross compiler. 1737 1738 -- Assume this is a cross tool if the executable name is not gnatlink 1739 1740 if Base_Name (Command_Name) = "gnatlink" 1741 and then Output_File_Name.all = "test" 1742 then 1743 Error_Msg ("warning: executable name """ & Output_File_Name.all 1744 & """ may conflict with shell command"); 1745 end if; 1746 1747 -- If -M switch was specified, add the switches to create the map file 1748 1749 if Create_Map_File then 1750 declare 1751 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map"; 1752 Switches : String_List_Access; 1753 1754 begin 1755 Convert (Map_File, Map_Name, Switches); 1756 1757 if Switches /= null then 1758 for J in Switches'Range loop 1759 Linker_Options.Increment_Last; 1760 Linker_Options.Table (Linker_Options.Last) := Switches (J); 1761 end loop; 1762 end if; 1763 end; 1764 end if; 1765 1766 -- Perform consistency checks 1767 1768 -- Transform the .ali file name into the binder output file name 1769 1770 Make_Binder_File_Names : declare 1771 Fname : constant String := Base_Name (Ali_File_Name.all); 1772 Fname_Len : Integer := Fname'Length; 1773 1774 function Get_Maximum_File_Name_Length return Integer; 1775 pragma Import (C, Get_Maximum_File_Name_Length, 1776 "__gnat_get_maximum_file_name_length"); 1777 1778 Maximum_File_Name_Length : constant Integer := 1779 Get_Maximum_File_Name_Length; 1780 1781 Bind_File_Prefix : Types.String_Ptr; 1782 -- Contains prefix used for bind files 1783 1784 begin 1785 -- Set prefix 1786 1787 if OpenVMS_On_Target then 1788 Bind_File_Prefix := new String'("b__"); 1789 else 1790 Bind_File_Prefix := new String'("b~"); 1791 end if; 1792 1793 -- If the length of the binder file becomes too long due to 1794 -- the addition of the "b?" prefix, then truncate it. 1795 1796 if Maximum_File_Name_Length > 0 then 1797 while Fname_Len > 1798 Maximum_File_Name_Length - Bind_File_Prefix.all'Length 1799 loop 1800 Fname_Len := Fname_Len - 1; 1801 end loop; 1802 end if; 1803 1804 declare 1805 Fnam : constant String := 1806 Bind_File_Prefix.all & 1807 Fname (Fname'First .. Fname'First + Fname_Len - 1); 1808 1809 begin 1810 Binder_Spec_Src_File := new String'(Fnam & ".ads"); 1811 Binder_Body_Src_File := new String'(Fnam & ".adb"); 1812 Binder_Ali_File := new String'(Fnam & ".ali"); 1813 1814 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all); 1815 end; 1816 1817 if Fname_Len /= Fname'Length then 1818 Binder_Options.Increment_Last; 1819 Binder_Options.Table (Binder_Options.Last) := new String'("-o"); 1820 Binder_Options.Increment_Last; 1821 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File; 1822 end if; 1823 end Make_Binder_File_Names; 1824 1825 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL); 1826 1827 -- Compile the binder file. This is fast, so we always do it, unless 1828 -- specifically told not to by the -n switch 1829 1830 if Compile_Bind_File then 1831 Bind_Step : declare 1832 Success : Boolean; 1833 Args : Argument_List 1834 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1); 1835 1836 begin 1837 for J in 1 .. Binder_Options_From_ALI.Last loop 1838 Args (J) := Binder_Options_From_ALI.Table (J); 1839 end loop; 1840 1841 for J in 1 .. Binder_Options.Last loop 1842 Args (Binder_Options_From_ALI.Last + J) := 1843 Binder_Options.Table (J); 1844 end loop; 1845 1846 -- Use the full path of the binder generated source, so that it is 1847 -- guaranteed that the debugger will find this source, even with 1848 -- STABS. 1849 1850 Args (Args'Last) := 1851 new String'(Normalize_Pathname (Binder_Body_Src_File.all)); 1852 1853 if Verbose_Mode then 1854 Write_Str (Base_Name (Gcc_Path.all)); 1855 1856 for J in Args'Range loop 1857 Write_Str (" "); 1858 Write_Str (Args (J).all); 1859 end loop; 1860 1861 Write_Eol; 1862 end if; 1863 1864 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success); 1865 1866 if not Success then 1867 Exit_Program (E_Fatal); 1868 end if; 1869 end Bind_Step; 1870 end if; 1871 1872 -- In CodePeer mode, there's nothing left to do after the binder file has 1873 -- been compiled. 1874 1875 if Opt.CodePeer_Mode then 1876 return; 1877 end if; 1878 1879 -- Now, actually link the program 1880 1881 -- Skip this step for now on JVM since the Java interpreter will do 1882 -- the actual link at run time. We might consider packing all class files 1883 -- in a .zip file during this step. 1884 1885 if VM_Target /= JVM_Target then 1886 Link_Step : declare 1887 Num_Args : Natural := 1888 (Linker_Options.Last - Linker_Options.First + 1) + 1889 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) + 1890 (Linker_Objects.Last - Linker_Objects.First + 1); 1891 Stack_Op : Boolean := False; 1892 IDENT_Op : Boolean := False; 1893 1894 begin 1895 if AAMP_On_Target then 1896 1897 -- Remove extraneous flags not relevant for AAMP 1898 1899 for J in reverse Linker_Options.First .. Linker_Options.Last loop 1900 if Linker_Options.Table (J)'Length = 0 1901 or else Linker_Options.Table (J) (1 .. 3) = "-Wl" 1902 or else Linker_Options.Table (J) (1 .. 3) = "-sh" 1903 or else Linker_Options.Table (J) (1 .. 2) = "-O" 1904 or else Linker_Options.Table (J) (1 .. 2) = "-g" 1905 then 1906 Linker_Options.Table (J .. Linker_Options.Last - 1) := 1907 Linker_Options.Table (J + 1 .. Linker_Options.Last); 1908 Linker_Options.Decrement_Last; 1909 Num_Args := Num_Args - 1; 1910 end if; 1911 end loop; 1912 1913 elsif RTX_RTSS_Kernel_Module_On_Target then 1914 1915 -- Remove flags not relevant for Microsoft linker and adapt some 1916 -- others. 1917 1918 for J in reverse Linker_Options.First .. Linker_Options.Last loop 1919 1920 -- Remove flags that are not accepted 1921 1922 if Linker_Options.Table (J)'Length = 0 1923 or else Linker_Options.Table (J) (1 .. 2) = "-l" 1924 or else Linker_Options.Table (J) (1 .. 3) = "-Wl" 1925 or else Linker_Options.Table (J) (1 .. 3) = "-sh" 1926 or else Linker_Options.Table (J) (1 .. 2) = "-O" 1927 or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker" 1928 or else Linker_Options.Table (J) (1 .. 9) = "-mthreads" 1929 then 1930 Linker_Options.Table (J .. Linker_Options.Last - 1) := 1931 Linker_Options.Table (J + 1 .. Linker_Options.Last); 1932 Linker_Options.Decrement_Last; 1933 Num_Args := Num_Args - 1; 1934 1935 -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by 1936 -- Windows "\". 1937 elsif Linker_Options.Table (J) (1 .. 2) = "-L" then 1938 declare 1939 Libpath_Option : constant String_Access := new String' 1940 ("/LIBPATH:" & 1941 Linker_Options.Table (J) 1942 (3 .. Linker_Options.Table (J).all'Last)); 1943 begin 1944 for Index in 10 .. Libpath_Option'Last loop 1945 if Libpath_Option (Index) = '/' then 1946 Libpath_Option (Index) := '\'; 1947 end if; 1948 end loop; 1949 1950 Linker_Options.Table (J) := Libpath_Option; 1951 end; 1952 1953 -- Replace "-g" by "/DEBUG" 1954 elsif Linker_Options.Table (J) (1 .. 2) = "-g" then 1955 Linker_Options.Table (J) := new String'("/DEBUG"); 1956 1957 -- Replace "-o" by "/OUT:" 1958 elsif Linker_Options.Table (J) (1 .. 2) = "-o" then 1959 Linker_Options.Table (J + 1) := new String' 1960 ("/OUT:" & Linker_Options.Table (J + 1).all); 1961 1962 Linker_Options.Table (J .. Linker_Options.Last - 1) := 1963 Linker_Options.Table (J + 1 .. Linker_Options.Last); 1964 Linker_Options.Decrement_Last; 1965 Num_Args := Num_Args - 1; 1966 1967 -- Replace "--stack=" by "/STACK:" 1968 elsif Linker_Options.Table (J) (1 .. 8) = "--stack=" then 1969 Linker_Options.Table (J) := new String' 1970 ("/STACK:" & 1971 Linker_Options.Table (J) 1972 (9 .. Linker_Options.Table (J).all'Last)); 1973 1974 -- Replace "-v" by its counterpart "/VERBOSE" 1975 elsif Linker_Options.Table (J) (1 .. 2) = "-v" then 1976 Linker_Options.Table (J) := new String'("/VERBOSE"); 1977 end if; 1978 end loop; 1979 1980 -- Add some required flags to create RTSS modules 1981 1982 declare 1983 Flags_For_Linker : constant array (1 .. 17) of String_Access := 1984 (new String'("/NODEFAULTLIB"), 1985 new String'("/INCREMENTAL:NO"), 1986 new String'("/NOLOGO"), 1987 new String'("/DRIVER"), 1988 new String'("/ALIGN:0x20"), 1989 new String'("/SUBSYSTEM:NATIVE"), 1990 new String'("/ENTRY:_RtapiProcessEntryCRT@8"), 1991 new String'("/RELEASE"), 1992 new String'("startupCRT.obj"), 1993 new String'("rtxlibcmt.lib"), 1994 new String'("oldnames.lib"), 1995 new String'("rtapi_rtss.lib"), 1996 new String'("Rtx_Rtss.lib"), 1997 new String'("libkernel32.a"), 1998 new String'("libws2_32.a"), 1999 new String'("libmswsock.a"), 2000 new String'("libadvapi32.a")); 2001 -- These flags need to be passed to Microsoft linker. They 2002 -- come from the RTX documentation. 2003 2004 Gcc_Lib_Path : constant String_Access := new String' 2005 ("/LIBPATH:" & Include_Dir_Default_Prefix & "\..\"); 2006 -- Place to look for gcc related libraries, such as libgcc 2007 2008 begin 2009 -- Replace UNIX "/" by Windows "\" in the path 2010 2011 for Index in 10 .. Gcc_Lib_Path.all'Last loop 2012 if Gcc_Lib_Path (Index) = '/' then 2013 Gcc_Lib_Path (Index) := '\'; 2014 end if; 2015 end loop; 2016 2017 Linker_Options.Increment_Last; 2018 Linker_Options.Table (Linker_Options.Last) := Gcc_Lib_Path; 2019 Num_Args := Num_Args + 1; 2020 2021 for Index in Flags_For_Linker'Range loop 2022 Linker_Options.Increment_Last; 2023 Linker_Options.Table (Linker_Options.Last) := 2024 Flags_For_Linker (Index); 2025 Num_Args := Num_Args + 1; 2026 end loop; 2027 end; 2028 end if; 2029 2030 -- Remove duplicate stack size setting from the Linker_Options 2031 -- table. The stack setting option "-Xlinker --stack=R,C" can be 2032 -- found in one line when set by a pragma Linker_Options or in two 2033 -- lines ("-Xlinker" then "--stack=R,C") when set on the command 2034 -- line. We also check for the "-Wl,--stack=R" style option. 2035 2036 -- We must remove the second stack setting option instance 2037 -- because the one on the command line will always be the first 2038 -- one. And any subsequent stack setting option will overwrite the 2039 -- previous one. This is done especially for GNAT/NT where we set 2040 -- the stack size for tasking programs by a pragma in the NT 2041 -- specific tasking package System.Task_Primitives.Operations. 2042 2043 -- Note: This is not a FOR loop that runs from Linker_Options.First 2044 -- to Linker_Options.Last, since operations within the loop can 2045 -- modify the length of the table. 2046 2047 Clean_Link_Option_Set : declare 2048 J : Natural := Linker_Options.First; 2049 Shared_Libgcc_Seen : Boolean := False; 2050 2051 begin 2052 while J <= Linker_Options.Last loop 2053 2054 if Linker_Options.Table (J).all = "-Xlinker" 2055 and then J < Linker_Options.Last 2056 and then Linker_Options.Table (J + 1)'Length > 8 2057 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack=" 2058 then 2059 if Stack_Op then 2060 Linker_Options.Table (J .. Linker_Options.Last - 2) := 2061 Linker_Options.Table (J + 2 .. Linker_Options.Last); 2062 Linker_Options.Decrement_Last; 2063 Linker_Options.Decrement_Last; 2064 Num_Args := Num_Args - 2; 2065 2066 else 2067 Stack_Op := True; 2068 end if; 2069 end if; 2070 2071 -- Remove duplicate -shared-libgcc switch 2072 2073 if Linker_Options.Table (J).all = Shared_Libgcc_String then 2074 if Shared_Libgcc_Seen then 2075 Linker_Options.Table (J .. Linker_Options.Last - 1) := 2076 Linker_Options.Table (J + 1 .. Linker_Options.Last); 2077 Linker_Options.Decrement_Last; 2078 Num_Args := Num_Args - 1; 2079 2080 else 2081 Shared_Libgcc_Seen := True; 2082 end if; 2083 end if; 2084 2085 -- Here we just check for a canonical form that matches the 2086 -- pragma Linker_Options set in the NT runtime. 2087 2088 if (Linker_Options.Table (J)'Length > 17 2089 and then Linker_Options.Table (J) (1 .. 17) 2090 = "-Xlinker --stack=") 2091 or else 2092 (Linker_Options.Table (J)'Length > 12 2093 and then Linker_Options.Table (J) (1 .. 12) 2094 = "-Wl,--stack=") 2095 then 2096 if Stack_Op then 2097 Linker_Options.Table (J .. Linker_Options.Last - 1) := 2098 Linker_Options.Table (J + 1 .. Linker_Options.Last); 2099 Linker_Options.Decrement_Last; 2100 Num_Args := Num_Args - 1; 2101 2102 else 2103 Stack_Op := True; 2104 end if; 2105 end if; 2106 2107 -- Remove duplicate IDENTIFICATION directives (VMS) 2108 2109 if Linker_Options.Table (J)'Length > 29 2110 and then Linker_Options.Table (J) (1 .. 30) = 2111 "--for-linker=--identification=" 2112 then 2113 if IDENT_Op then 2114 Linker_Options.Table (J .. Linker_Options.Last - 1) := 2115 Linker_Options.Table (J + 1 .. Linker_Options.Last); 2116 Linker_Options.Decrement_Last; 2117 Num_Args := Num_Args - 1; 2118 2119 else 2120 IDENT_Op := True; 2121 end if; 2122 end if; 2123 2124 J := J + 1; 2125 end loop; 2126 2127 if Linker_Path = Gcc_Path and then VM_Target = No_VM then 2128 2129 -- For systems where the default is to link statically with 2130 -- libgcc, if gcc is not called with -shared-libgcc, call it 2131 -- with -static-libgcc, as there are some platforms where one 2132 -- of these two switches is compulsory to link. 2133 2134 if Shared_Libgcc_Default = 'T' 2135 and then not Shared_Libgcc_Seen 2136 then 2137 Linker_Options.Increment_Last; 2138 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc; 2139 Num_Args := Num_Args + 1; 2140 end if; 2141 2142 elsif RTX_RTSS_Kernel_Module_On_Target then 2143 2144 -- Force the use of the static libgcc for RTSS modules 2145 2146 Linker_Options.Increment_Last; 2147 Linker_Options.Table (Linker_Options.Last) := 2148 new String'("libgcc.a"); 2149 Num_Args := Num_Args + 1; 2150 end if; 2151 2152 end Clean_Link_Option_Set; 2153 2154 -- Prepare arguments for call to linker 2155 2156 Call_Linker : declare 2157 Success : Boolean; 2158 Args : Argument_List (1 .. Num_Args + 1); 2159 Index : Integer := Args'First; 2160 2161 begin 2162 Args (Index) := Binder_Obj_File; 2163 2164 -- Add the object files and any -largs libraries 2165 2166 for J in Linker_Objects.First .. Linker_Objects.Last loop 2167 Index := Index + 1; 2168 Args (Index) := Linker_Objects.Table (J); 2169 end loop; 2170 2171 -- Add the linker options from the binder file 2172 2173 for J in Linker_Options.First .. Linker_Options.Last loop 2174 Index := Index + 1; 2175 Args (Index) := Linker_Options.Table (J); 2176 end loop; 2177 2178 -- Finally add the libraries from the --GCC= switch 2179 2180 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop 2181 Index := Index + 1; 2182 Args (Index) := Gcc_Linker_Options.Table (J); 2183 end loop; 2184 2185 if Verbose_Mode then 2186 Write_Str (Linker_Path.all); 2187 2188 for J in Args'Range loop 2189 Write_Str (" "); 2190 Write_Str (Args (J).all); 2191 end loop; 2192 2193 Write_Eol; 2194 2195 -- If we are on very verbose mode (-v -v) and a response file 2196 -- is used we display its content. 2197 2198 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then 2199 Write_Eol; 2200 Write_Str ("Response file (" & 2201 Tname (Tname'First .. Tname'Last - 1) & 2202 ") content : "); 2203 Write_Eol; 2204 2205 for J in 2206 Response_File_Objects.First .. 2207 Response_File_Objects.Last 2208 loop 2209 Write_Str (Response_File_Objects.Table (J).all); 2210 Write_Eol; 2211 end loop; 2212 2213 Write_Eol; 2214 end if; 2215 end if; 2216 2217 System.OS_Lib.Spawn (Linker_Path.all, Args, Success); 2218 2219 if Success then 2220 2221 -- Delete the temporary file used in conjunction with linking 2222 -- if one was created. See Process_Bind_File for details. 2223 2224 if Tname_FD /= Invalid_FD then 2225 Delete (Tname); 2226 end if; 2227 2228 else 2229 Error_Msg ("error when calling " & Linker_Path.all); 2230 Exit_Program (E_Fatal); 2231 end if; 2232 end Call_Linker; 2233 end Link_Step; 2234 end if; 2235 2236 -- Only keep the binder output file and it's associated object 2237 -- file if compiling with the -g option. These files are only 2238 -- useful if debugging. 2239 2240 if not Debug_Flag_Present then 2241 Delete (Binder_Ali_File.all & ASCII.NUL); 2242 Delete (Binder_Spec_Src_File.all & ASCII.NUL); 2243 Delete (Binder_Body_Src_File.all & ASCII.NUL); 2244 2245 if VM_Target = No_VM then 2246 Delete (Binder_Obj_File.all & ASCII.NUL); 2247 end if; 2248 end if; 2249 2250 Exit_Program (E_Success); 2251 2252exception 2253 when X : others => 2254 Write_Line (Exception_Information (X)); 2255 Exit_With_Error ("INTERNAL ERROR. Please report"); 2256end Gnatlink; 2257