summaryrefslogtreecommitdiff
path: root/gcc/config/vms/vms-ld.c
blob: fb5a91602f3491eab6f4d80ad31204b2d219e043 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
/* VMS linker wrapper.
   Copyright (C) 2011-2016 Free Software Foundation, Inc.
   Contributed by AdaCore

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT 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
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

/* This program is a wrapper around the VMS linker.
   It translates Unix style command line options into corresponding
   VMS style qualifiers and then spawns the VMS linker.

   It is possible to build this program on UNIX but only for the purpose of
   checking for errors.  */

#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>

#include "libiberty.h"
#include <safe-ctype.h>
#include <sys/stat.h>

/* Macro for logicals.  */
#define LNM__STRING 2
#define LNM_C_NAMLENGTH 255
#define PSL_C_SUPER 2
#define PSL_C_USER 3

/* Local variable declarations.  */
static int ld_nocall_debug = 0;
static int ld_mkthreads = 0;
static int ld_upcalls = 0;

/* verbose = 1 if -v passed.  */
static int verbose = 0;

/* save_temps = 1 if -save-temps passed.  */
static int save_temps = 0;

/* By default don't generate executable file if there are errors
   in the link.  Override with --noinhibit-exec.  */
static int inhibit_exec = 1;

/* debug = 1 if -g passed.  */
static int debug = 0;

/* By default prefer to link with static libraries.  */
static int staticp = 1;

/* By default generate an executable, not a shareable image library.
   Override with -shared.  */
static int share = 0;

/* Linker command line.  */
static int link_cmd_maxlen = 0;
static char *link_cmd = 0;
static int link_cmd_len = 0;

/* Keep track of filenames.  */
static char *sharebasename;
static const char *exefullfilename;
static const char *exefilename;

/* Search dir list passed on command line (with -L).  */
static const char **search_dirs;
static int search_dirs_len;

/* Local function declarations.  */
static void addarg (const char *);
static int is_regular_file (char *);
static char *to_host_file_spec (char *);
static char *locate_lib (char *);
static const char *expand_lib (char *);
static void preprocess_args (int, char **);
static void process_args (int, char **);
static void maybe_set_link_compat (void);
static int set_exe (const char *);
#ifdef VMS
static int translate_unix (char *, int);
#endif


/* Append STR to the command line to invoke the linker.
   Expand the line as necessary to accommodate.  */

static void
addarg (const char *str)
{
  int l = strlen (str);

  /* Extend the line.  */
  if (link_cmd_len + l >= link_cmd_maxlen)
    {
      link_cmd_maxlen = link_cmd_len + l + 1024;
      link_cmd = XRESIZEVEC (char, link_cmd, link_cmd_maxlen);
    }

  memcpy (link_cmd + link_cmd_len, str, l);
  link_cmd_len += l;
}

/* Check to see if NAME is a regular file, i.e. not a directory.  */

static int
is_regular_file (char *name)
{
  int ret;
  struct stat statbuf;

  ret = stat (name, &statbuf);
  return !ret && S_ISREG (statbuf.st_mode);
}

#ifdef VMS
static char new_host_filespec [255];
static char filename_buff [256];

/* Action routine called by decc$to_vms.  NAME is a file name or
   directory name.  TYPE is unused.  */

static int
translate_unix (char *name, int type ATTRIBUTE_UNUSED)
{
  strcpy (filename_buff, name);
  return 0;
}
#endif

/* Translate a Unix syntax file specification FILESPEC into VMS syntax.
   If indicators of VMS syntax found, return input string.
   Return a pointer to a static buffer.  */

static char *
to_host_file_spec (char *filespec)
{
#ifdef VMS
  if (strchr (filespec, ']') || strchr (filespec, ':'))
    {
      /* Looks like a VMS path.  */
      return filespec;
    }
  else
    {

      strcpy (filename_buff, filespec);
      decc$to_vms (filespec, translate_unix, 1, 1);
      strcpy (new_host_filespec, filename_buff);
      return new_host_filespec;
    }
#else
  return filespec;
#endif
}

/* Locate library LIB_NAME on the library path.  */

static char *
locate_lib (char *lib_name)
{
  int lib_len = strlen (lib_name);
  const char *exts[3];
  int i;

  if (staticp)
    {
      /* For static links, look for shareable image libraries last.  */
      exts[0] = ".a";
      exts[1] = ".olb";
      exts[2] = ".exe";
    }
  else
    {
      exts[0] = ".exe";
      exts[1] = ".a";
      exts[2] = ".olb";
    }

  for (i = 0; i < search_dirs_len; i++)
    {
      char *buf;
      int l;
      int j;

      l = strlen (search_dirs[i]);
      buf = (char *)alloca (l + 4 + lib_len + 4 + 1);
      /* Put PATH/libLIB.  */
      memcpy (buf, search_dirs[i], l);
      memcpy (buf + l, "/lib", 4);
      l += 4;
      memcpy (buf + l, lib_name, lib_len);
      l += lib_len;

      /* Look for files with the extensions.  */
      for (j = 0; j < 3; j++)
        {
	  strcpy (buf + l, exts[j]);
	  if (is_regular_file (buf))
	    return xstrdup (to_host_file_spec (buf));
        }
    }

  return NULL;
}

/* Given a library name NAME, i.e. foo,  Look for libfoo.lib and then
   libfoo.a in the set of directories we are allowed to search in.
   May return NULL if the library can be discarded.  */

static const char *
expand_lib (char *name)
{
  char *lib_path;

  /* Discard libc.  */
  if (strcmp (name, "c") == 0)
    return NULL;

  /* Discard libm.  No separate library for math functions.  */
  if (strcmp (name, "m") == 0)
    return NULL;

  /* Search on path.  */
  lib_path = locate_lib (name);
  if (lib_path)
    return lib_path;

  fprintf (stderr,
	   "Couldn't locate library: lib%s.exe, lib%s.a or lib%s.olb\n",
	   name, name, name);

  exit (EXIT_FAILURE);
}

/* Preprocess the number of args P_ARGC in ARGV.
   Look for special flags, etc. that must be handled first.  */

static void
preprocess_args (int argc, char **argv)
{
  int i;

  /* Scan for -shared.  */
  for (i = 1; i < argc; i++)
    if (strcmp (argv[i], "-shared") == 0)
      {
        share = 1;
        break;
      }

  for (i = 1; i < argc; i++)
    if (strcmp (argv[i], "-o") == 0)
      {
	int len;

	i++;
        exefilename = lbasename (argv[i]);
	exefullfilename = xstrdup (to_host_file_spec (argv[i]));

	if (share)
          addarg(" /share=");
	else
	  addarg (" /exe=");
        addarg (exefullfilename);

	if (share)
	  {
            char *ptr;

            /* Extract the basename.  */
	    ptr = strchr (argv[i], ']');
            if (ptr == NULL)
              ptr = strchr (argv[i], ':');
            if (ptr == NULL)
              ptr = strchr (argv[i], '/');
            if (ptr == NULL)
	      sharebasename = xstrdup (argv[i]);
            else
	      sharebasename = xstrdup (ptr + 1);

	    len = strlen (sharebasename);
	    if (strncasecmp (&sharebasename[len-4], ".exe", 4) == 0)
	      sharebasename[len - 4] = 0;

            /* Convert to uppercase.  */
	    for (ptr = sharebasename; *ptr; ptr++)
	      *ptr = TOUPPER (*ptr);
	  }
      }

  if (exefullfilename == NULL && !share)
    {
      exefilename = "a_out.exe";
      exefullfilename = "a_out.exe";
      addarg (xstrdup (" /exe=a_out.exe"));
    }
}

/* Preprocess the number of args ARGC in ARGV.  Look for
   special flags, etc. that must be handled for the VMS linker.  */

static void
process_args (int argc, char **argv)
{
  int i;

  for (i = 1; i < argc; i++)
    {
      if (strncmp (argv[i], "-L", 2) == 0)
	{
          search_dirs = XRESIZEVEC(const char *, search_dirs,
                                   search_dirs_len + 1);
          search_dirs[search_dirs_len++] = &argv[i][2];
	}

      /* -v turns on verbose option here and is passed on to gcc.  */
      else if (strcmp (argv[i], "-v") == 0)
	verbose++;
      else if (strcmp (argv[i], "--version") == 0)
	{
	  fprintf (stdout, "VMS Linker\n");
          exit (EXIT_SUCCESS);
	}
      else if (strcmp (argv[i], "--help") == 0)
	{
	  fprintf (stdout, "VMS Linker\n");
          exit (EXIT_SUCCESS);
	}
      else if (strcmp (argv[i], "-g0") == 0)
	addarg ("/notraceback");
      else if (strncmp (argv[i], "-g", 2) == 0)
	{
	  addarg ("/debug");
	  debug = 1;
	}
      else if (strcmp (argv[i], "-static") == 0)
	staticp = 1;
      else if (strcmp (argv[i], "-map") == 0)
	{
	  char *buff, *ptr;

	  buff = (char *) xstrdup (exefullfilename);
	  ptr = strrchr (buff, '.');
	  if (ptr)
	    *ptr = 0;

	  strcat (buff, ".map");
	  addarg ("/map=");
	  addarg (buff);
          addarg (".map");
	  addarg ("/full");

          free (buff);
	}
      else if (strcmp (argv[i], "-save-temps") == 0)
	save_temps = 1;
      else if (strcmp (argv[i], "--noinhibit-exec") == 0)
	inhibit_exec = 0;
    }
}

#ifdef VMS
typedef struct dsc
{
  unsigned short len, mbz;
  const char *adr;
} Descriptor;

struct lst
{
  unsigned short buflen, item_code;
  const void *bufaddr;
  void *retlenaddr;
};

static struct
{
  struct lst items [1];
  unsigned int terminator;
} item_lst1;

static struct
{
  struct lst items [2];
  unsigned int terminator;
} item_lst2;

/* Checks if logical names are defined for setting system library path and
   linker program to enable compatibility with earlier VMS versions.  */

static void
maybe_set_link_compat (void)
{
  char lnm_buff [LNM_C_NAMLENGTH];
  unsigned int lnm_buff_len;
  int status;
  Descriptor tabledsc, linkdsc;

  tabledsc.adr = "LNM$JOB";
  tabledsc.len = strlen (tabledsc.adr);
  tabledsc.mbz = 0;

  linkdsc.adr = "GCC_LD_SYS$LIBRARY";
  linkdsc.len = strlen (linkdsc.adr);
  linkdsc.mbz = 0;

  item_lst1.items[0].buflen = LNM_C_NAMLENGTH;
  item_lst1.items[0].item_code = LNM__STRING;
  item_lst1.items[0].bufaddr = lnm_buff;
  item_lst1.items[0].retlenaddr = &lnm_buff_len;
  item_lst1.terminator = 0;

  status = SYS$TRNLNM
    (0,          /* attr */
     &tabledsc,  /* tabnam */
     &linkdsc,   /* lognam */
     0,          /* acmode */
     &item_lst1);

  /* If GCC_LD_SYS$LIBRARY is defined, redefine SYS$LIBRARY to search
     the equivalence name first for system libraries, then the default
     system library directory */

  if ((status & 1) == 1)
    {
      unsigned char acmode = PSL_C_USER; /* Don't retain after image exit */
      const char *syslib = "SYS$SYSROOT:[SYSLIB]"; /* Default SYS$LIBRARY */

      /* Only visible to current and child processes */
      tabledsc.adr = "LNM$PROCESS";
      tabledsc.len = strlen (tabledsc.adr);
      tabledsc.mbz = 0;

      linkdsc.adr = "SYS$LIBRARY";
      linkdsc.len = strlen (linkdsc.adr);
      linkdsc.mbz = 0;

      item_lst2.items[0].buflen = lnm_buff_len;
      item_lst2.items[0].item_code = LNM__STRING;
      item_lst2.items[0].bufaddr = lnm_buff;
      item_lst2.items[0].retlenaddr = 0;

      item_lst2.items[1].buflen = strlen (syslib);
      item_lst2.items[1].item_code = LNM__STRING;
      item_lst2.items[1].bufaddr = syslib;
      item_lst2.items[1].retlenaddr = 0;
      item_lst2.terminator = 0;

      status = SYS$CRELNM
	(0,          /* attr */
	 &tabledsc,  /* tabnam */
	 &linkdsc,   /* lognam */
	 &acmode,    /* acmode */
	 &item_lst2);

    }

  tabledsc.adr = "LNM$JOB";
  tabledsc.len = strlen (tabledsc.adr);
  tabledsc.mbz = 0;

  linkdsc.adr = "GCC_LD_LINK";
  linkdsc.len = strlen (linkdsc.adr);
  linkdsc.mbz = 0;

  item_lst1.items[0].buflen = LNM_C_NAMLENGTH;
  item_lst1.items[0].item_code = LNM__STRING;
  item_lst1.items[0].bufaddr = lnm_buff;
  item_lst1.items[0].retlenaddr = &lnm_buff_len;
  item_lst1.terminator = 0;

  status = SYS$TRNLNM
    (0,          /* attr */
     &tabledsc,  /* tabnam */
     &linkdsc,   /* lognam */
     0,          /* acmode */
     &item_lst1);

  /* If GCC_LD_LINK is defined, redefine LINK to use the equivalence name
     (sometimes the LINK program version is used by VMS to determine
     compatibility).  */

  if ((status & 1) == 1)
    {
      unsigned char acmode = PSL_C_USER; /* Don't retain after image exit.  */

      /* Only visible to current and child processes.  */
      tabledsc.adr = "LNM$PROCESS";
      tabledsc.len = strlen (tabledsc.adr);
      tabledsc.mbz = 0;

      linkdsc.adr = "LINK";
      linkdsc.len = strlen (linkdsc.adr);
      linkdsc.mbz = 0;

      item_lst1.items[0].buflen = lnm_buff_len;
      item_lst1.items[0].item_code = LNM__STRING;
      item_lst1.items[0].bufaddr = lnm_buff;
      item_lst1.items[0].retlenaddr = 0;
      item_lst1.terminator = 0;

      status = SYS$CRELNM
	(0,          /* attr */
	 &tabledsc,  /* tabnam */
	 &linkdsc,   /* lognam */
	 &acmode,    /* acmode */
	 &item_lst1);
    }
}
#else
static void
maybe_set_link_compat (void)
{
}
#endif

/* Set environment defined executable attributes.  */

static int
set_exe (const char *arg)
{
  char allargs [1024];
  int res;

  snprintf (allargs, sizeof (allargs),
            "$@gnu:[bin]set_exe %s %s", exefullfilename, arg);
  if (verbose)
    printf ("%s\n", allargs);

  res = system (allargs);
  if (verbose > 1)
    printf ("$!status = %d\n", res);

  if ((res & 1) != 1)
    {
      fprintf (stderr, "ld error: popen set_exe\n");
      return 1;
    }
  return 0;
}

/* The main program.  Spawn the VMS linker after fixing up the Unix-like flags
   and args to be what the VMS linker wants.  */

int
main (int argc, char **argv)
{
  /* File specification for vms-dwarf2.o.  */
  char *vmsdwarf2spec = 0;

  /* File specification for vms-dwarf2eh.o.  */
  char *vmsdwarf2ehspec = 0;

  int i;
  char cwdev[128], *devptr;
  int cwdevlen;
  FILE *optfile;
  char *cwd, *ptr;
  char *optfilename;
  int status = 0;

  /* Some linker options can be set with logicals.  */
  if (getenv ("GNAT$LD_NOCALL_DEBUG"))
    ld_nocall_debug = 1;
  if (getenv ("GNAT$LD_MKTHREADS"))
    ld_mkthreads = 1;
  if (getenv ("GNAT$LD_UPCALLS"))
    ld_upcalls = 1;
  if (getenv ("GNAT$LD_SHARED_LIBS"))
    staticp = 0;

  /* Get current dir.  */
#ifdef VMS
  cwd = getcwd (0, 1024, 1);
#else
  cwd = getcwd (0, 1024);
  strcat (cwd, "/");
#endif

  /* Extract device part of the path.  */
  devptr = strchr (cwd, ':');
  if (devptr)
    cwdevlen = (devptr - cwd) + 1;
  else
    cwdevlen = 0;
  memcpy (cwdev, cwd, cwdevlen);
  cwdev [cwdevlen] = '\0';

  maybe_set_link_compat ();

  /* Linker command starts with the command name.  */
  addarg ("$ link");

  /* Pass to find args that have to be append first.  */
  preprocess_args (argc , argv);

  /* Pass to find the rest of the args.  */
  process_args (argc , argv);

  if (!verbose)
    addarg ("/noinform");

  /* Create a temp file to hold args, otherwise we can easily exceed the VMS
     command line length limits.  */
  optfilename = (char *) xmalloc (strlen (exefilename) + 13);
  strcpy (optfilename, exefilename);
  ptr = strrchr (optfilename, '.');
  if (ptr)
    *ptr = 0;
  strcat (optfilename, ".opt_tmpfile");
  optfile = fopen (optfilename, "w");

  /* Write out the IDENTIFICATION argument first so that it can be overridden
     by an options file.  */
  for (i = 1; i < argc; i++)
    {
      int arg_len = strlen (argv[i]);

      if (arg_len > 6 && strncasecmp (argv[i], "IDENT=", 6) == 0)
	{
	  /* Comes from command line. If present will always appear before
	     --identification=... and will override.  */
          break;
	}
      else if (arg_len > 17
	       && strncasecmp (argv[i], "--identification=", 17) == 0)
	{
	  /* Comes from pragma Ident ().  */
          fprintf (optfile, "case_sensitive=yes\n");
          fprintf (optfile, "IDENTIFICATION=\"%-.15s\"\n", &argv[i][17]);
          fprintf (optfile, "case_sensitive=NO\n");
	}
    }

  for (i = 1; i < argc; i++)
    {
      int arg_len = strlen (argv[i]);

      if (strcmp (argv[i], "-o") == 0)
        {
          /* Already handled.  */
          i++;
        }
      else if (arg_len > 2 && strncmp (argv[i], "-l", 2) == 0)
	{
	  const char *libname;

          libname = expand_lib (&argv[i][2]);
	  if (libname != NULL)
	    {
              int len = strlen (libname);
              const char *ext;

	      if (len > 4 && strcasecmp (&libname [len-4], ".exe") == 0)
		ext = "/shareable";
	      else
		ext = "/library";

	      if (libname[0] == '[')
                fprintf (optfile, "%s%s%s\n", cwdev, libname, ext);
	      else
                fprintf (optfile, "%s%s\n", libname, ext);
	    }
	}
      else if (strcmp (argv[i], "-v" ) == 0
	       || strncmp (argv[i], "-g", 2 ) == 0
	       || strcmp (argv[i], "-static" ) == 0
	       || strcmp (argv[i], "-map" ) == 0
	       || strcmp (argv[i], "-save-temps") == 0
	       || strcmp (argv[i], "--noinhibit-exec") == 0
	       || (arg_len > 2 && strncmp (argv[i], "-L", 2) == 0)
	       || (arg_len >= 6 && strncmp (argv[i], "-share", 6) == 0))
        {
          /* Already handled.  */
        }
      else if (strncmp (argv[i], "--opt=", 6) == 0)
	fprintf (optfile, "%s\n", argv[i] + 6);
      else if (arg_len > 1 && argv[i][0] == '@')
	{
          /* Read response file (in fact a single line of filenames).  */
	  FILE *atfile;
	  char *ptr, *ptr1;
	  struct stat statbuf;
	  char *buff;
	  int len;

	  if (stat (&argv[i][1], &statbuf))
	    {
	      fprintf (stderr, "Couldn't open linker response file: %s\n",
		       &argv[i][1]);
	      exit (EXIT_FAILURE);
	    }

          /* Read the line.  */
	  buff = (char *) xmalloc (statbuf.st_size + 1);
	  atfile = fopen (&argv[i][1], "r");
	  fgets (buff, statbuf.st_size + 1, atfile);
	  fclose (atfile);

          /* Remove trailing \n.  */
	  len = strlen (buff);
	  if (buff [len - 1] == '\n')
	    {
	      buff [len - 1] = 0;
	      len--;
	    }

          /* Put the filenames to the opt file.  */
	  ptr = buff;
	  do
	  {
	     ptr1 = strchr (ptr, ' ');
	     if (ptr1)
	       *ptr1 = 0;

             /* Add device name if a path is present.  */
	     ptr = to_host_file_spec (ptr);
	     if (ptr[0] == '[')
	       fprintf (optfile, "%s%s\n", cwdev, ptr);
	     else
	       fprintf (optfile, "%s\n", ptr);

	     ptr = ptr1 + 1;
	  }
          while (ptr1);
	}
      else if ((argv[i][0] == '/') && (strchr (&argv[i][1], '/') == 0))
        {
          /* Unix style file specs and VMS style switches look alike,
             so assume an arg consisting of one and only one slash,
             and that being first, is really a switch.  */
          addarg (argv[i]);
        }
      else if (arg_len > 4
	       && strncasecmp (&argv[i][arg_len-4], ".opt", 4) == 0)
	{
          /* Read option file.  */
	  FILE *optfile1;
	  char buff[256];

	  /* Disable __UNIX_FOPEN redefinition in case user supplied .opt
	     file is not stream oriented. */

	  optfile1 = (fopen) (argv[i], "r");
	  if (optfile1 == 0)
	    {
	      perror (argv[i]);
	      status = 1;
	      goto cleanup_and_exit;
	    }

	  while (fgets (buff, sizeof (buff), optfile1))
	    fputs (buff, optfile);

	  fclose (optfile1);
	}
      else if (arg_len > 7 && strncasecmp (argv[i], "GSMATCH", 7) == 0)
	fprintf (optfile, "%s\n", argv[i]);
      else if (arg_len > 6 && strncasecmp (argv[i], "IDENT=", 6) == 0)
	{
	  /* Comes from command line and will override pragma.  */
	  fprintf (optfile, "case_sensitive=yes\n");
	  fprintf (optfile, "IDENT=\"%15.15s\"\n", &argv[i][6]);
	  fprintf (optfile, "case_sensitive=NO\n");
	}
      else if (arg_len > 17
	       && strncasecmp (argv[i], "--identification=", 17) == 0)
        {
          /* Already handled.  */
        }
      else
	{
	  /* Assume filename arg.  */
          const char *file;
	  const char *addswitch = NULL;
	  char *buff;
	  int buff_len;
	  int is_cld = 0;

	  file = to_host_file_spec (argv[i]);
	  arg_len = strlen (file);

	  /* Handle shareable image libraries.  */
	  if (arg_len > 4 && strcasecmp (&file[arg_len - 4], ".exe") == 0)
	    addswitch = "/shareable";
	  else if (arg_len > 4 && strcasecmp (&file[arg_len - 4], ".cld") == 0)
	    {
	      addswitch = "/shareable";
	      is_cld = 1;
	    }

	  /* Handle object libraries.  */
	  else if (arg_len > 2 && strcasecmp (&file[arg_len - 2], ".a") == 0)
	    addswitch = "/lib";
	  else if (arg_len > 4 && strcasecmp (&file[arg_len - 4], ".olb") == 0)
	    addswitch = "/lib";

	  /* Absolutize file location.  */
	  if (file[0] == '[')
	    {
	      buff = (char *) xmalloc (cwdevlen + arg_len + 1);
	      sprintf (buff, "%s%s", cwdev, file);
	    }
	  else if (strchr (file, ':'))
	    {
	      buff = xstrdup (file);
	    }
	  else
	    {
	      buff = (char *) xmalloc (strlen (cwd) + arg_len + 1);
	      sprintf (buff, "%s%s", cwd, file);
	    }

	  buff_len = strlen (buff);

	  if (buff_len >= 15
	      && strcasecmp (&buff[buff_len - 14], "vms-dwarf2eh.o") == 0)
	    {
              /* Remind of it.  */
              vmsdwarf2ehspec = xstrdup (buff);
	    }
	  else if (buff_len >= 13
                   && strcasecmp (&buff[buff_len - 12], "vms-dwarf2.o") == 0)
            {
              /* Remind of it.  */
              vmsdwarf2spec = xstrdup (buff);
            }
	  else if (is_cld)
	    {
              /* Command line definition file.  */
              addarg (buff);
              addarg (addswitch);
	      addarg (",");
	    }
	  else
	    {
              fprintf (optfile, "%s%s\n",
                       buff, addswitch != NULL ? addswitch : "");
	    }
          free (buff);
	}
    }

  if (vmsdwarf2ehspec)
    {
      /* Sequentialize exception handling info.  */

      fprintf (optfile, "case_sensitive=yes\n");
      fprintf (optfile, "cluster=DWARF2eh,,,%s\n", vmsdwarf2ehspec);
      fprintf (optfile, "collect=DWARF2eh,eh_frame\n");
      fprintf (optfile, "case_sensitive=NO\n");
    }

  if (debug && vmsdwarf2spec)
    {
      /* Sequentialize the debug info.  */

      fprintf (optfile, "case_sensitive=yes\n");
      fprintf (optfile, "cluster=DWARF2debug,,,%s\n", vmsdwarf2spec);
      fprintf (optfile, "collect=DWARF2debug,debug_abbrev,debug_aranges,-\n");
      fprintf (optfile, " debug_frame,debug_info,debug_line,debug_loc,-\n");
      fprintf (optfile, " debug_macinfo,debug_pubnames,debug_str,-\n");
      fprintf (optfile, " debug_zzzzzz\n");
      fprintf (optfile, "case_sensitive=NO\n");
    }

  if (debug && share && vmsdwarf2spec)
    {
      /* Sequentialize the shared library debug info.  */

      fprintf (optfile, "case_sensitive=yes\n");
      fprintf (optfile, "symbol_vector=(-\n");
      fprintf (optfile,
	       "%s$DWARF2.DEBUG_ABBREV/$dwarf2.debug_abbrev=DATA,-\n",
	       sharebasename);
      fprintf (optfile,
	       "%s$DWARF2.DEBUG_ARANGES/$dwarf2.debug_aranges=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_FRAME/$dwarf2.debug_frame=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_INFO/$dwarf2.debug_info=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_LINE/$dwarf2.debug_line=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_LOC/$dwarf2.debug_loc=DATA,-\n",
	       sharebasename);
      fprintf (optfile,
	       "%s$DWARF2.DEBUG_MACINFO/$dwarf2.debug_macinfo=DATA,-\n",
	       sharebasename);
      fprintf (optfile,
	       "%s$DWARF2.DEBUG_PUBNAMES/$dwarf2.debug_pubnames=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_STR/$dwarf2.debug_str=DATA,-\n",
	       sharebasename);
      fprintf (optfile, "%s$DWARF2.DEBUG_ZZZZZZ/$dwarf2.debug_zzzzzz=DATA)\n",
	       sharebasename);
      fprintf (optfile, "case_sensitive=NO\n");
    }

  fprintf (optfile, "PSECT_ATTR=LIB$INITIALIZE,GBL\n");
  fclose (optfile);

  /* Append opt file.  */
  addarg (" ");
  addarg (optfilename);
  addarg ("/opt");

  if (verbose)
    printf ("%s\n", link_cmd);

  status = system (link_cmd);
  if (verbose > 1)
    printf ("$!status = %d\n", status);

  if ((status & 1) != 1)
    {
      status = 1;
      goto cleanup_and_exit;
    }

  if (debug && !share && ld_nocall_debug)
    {
      status = set_exe ("/flags=nocall_debug");
      if (status != 0)
        goto cleanup_and_exit;
    }

  if (!share && ld_mkthreads)
    {
      status = set_exe ("/flags=mkthreads");
      if (status != 0)
        goto cleanup_and_exit;
    }

  if (!share && ld_upcalls)
    {
      status = set_exe ("/flags=upcalls");
      if (status != 0)
        goto cleanup_and_exit;
    }

  status = 0;

 cleanup_and_exit:
  if (!save_temps)
    remove (optfilename);

  if (status == 0)
    exit (EXIT_SUCCESS);

  if (exefullfilename && inhibit_exec == 1)
    remove (exefullfilename);

  exit (EXIT_FAILURE);
}