Line data    Source code

       1              : /* Specific flags and argument handling of the C front-end.
       2              :    Copyright (C) 1999-2026 Free Software Foundation, Inc.
       3              : 
       4              : This file is part of GCC.
       5              : 
       6              : GCC is free software; you can redistribute it and/or modify it under
       7              : the terms of the GNU General Public License as published by the Free
       8              : Software Foundation; either version 3, or (at your option) any later
       9              : version.
      10              : 
      11              : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12              : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13              : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14              : for more details.
      15              : 
      16              : You should have received a copy of the GNU General Public License
      17              : along with GCC; see the file COPYING3.  If not see
      18              : <http://www.gnu.org/licenses/>.  */
      19              : 
      20              : #include "config.h"
      21              : #include "system.h"
      22              : #include "coretypes.h"
      23              : #include "tm.h"
      24              : #include "opts.h"
      25              : 
      26              : /* Filter command line before processing by the gcc driver proper.  */
      27              : void
      28       123364 : lang_specific_driver (struct cl_decoded_option **in_decoded_options ATTRIBUTE_UNUSED,
      29              :                       unsigned int *in_decoded_options_count ATTRIBUTE_UNUSED,
      30              :                       int *in_added_libraries ATTRIBUTE_UNUSED)
      31              : {
      32              :   /* Systems which use the NeXT runtime by default should arrange
      33              :      for the shared libgcc to be used when -fgnu-runtime is passed
      34              :      through specs.  */
      35              : #if defined(ENABLE_SHARED_LIBGCC) && ! NEXT_OBJC_RUNTIME
      36       123364 :   unsigned int i;
      37              : 
      38              :   /* The new argument list will be contained in this.  */
      39       123364 :   struct cl_decoded_option *new_decoded_options;
      40              : 
      41              :   /* True if we should add -shared-libgcc to the command-line.  */
      42       123364 :   int shared_libgcc = 0;
      43              : 
      44              :   /* The total number of arguments with the new stuff.  */
      45       123364 :   unsigned int argc;
      46              : 
      47              :   /* The argument list.  */
      48       123364 :   struct cl_decoded_option *decoded_options;
      49              : 
      50       123364 :   argc = *in_decoded_options_count;
      51       123364 :   decoded_options = *in_decoded_options;
      52              : 
      53      2394318 :   for (i = 1; i < argc; i++)
      54              :     {
      55      2271009 :       switch (decoded_options[i].opt_index)
      56              :         {
      57              :         case OPT_static_libgcc:
      58              :         case OPT_static:
      59              :           return;
      60              : 
      61       128039 :         case OPT_SPECIAL_input_file:
      62       128039 :           {
      63       128039 :             const char *file = decoded_options[i].arg;
      64       128039 :             int len;
      65              : 
      66              :             /* If the filename ends in .m or .mi, we are compiling
      67              :                ObjC and want to pass -shared-libgcc.  */
      68       128039 :             len = strlen (file);
      69       128039 :             if ((len > 2 && file[len - 2] == '.' && file[len - 1] == 'm')
      70       127856 :                 ||  (len > 3 && file[len - 3] == '.' && file[len - 2] == 'm'
      71            0 :                      && file[len - 1] == 'i'))
      72      2270954 :               shared_libgcc = 1;
      73              :           }
      74              :           break;
      75              :         }
      76              :     }
      77              : 
      78       123309 :   if  (shared_libgcc)
      79              :     {
      80            0 :       new_decoded_options = XNEWVEC (struct cl_decoded_option, argc + 1);
      81              : 
      82            0 :       i = 0;
      83            0 :       do
      84              :         {
      85            0 :           new_decoded_options[i] = decoded_options[i];
      86            0 :           i++;
      87              :         }
      88            0 :       while (i < argc);
      89              : 
      90            0 :       generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
      91            0 :                        &new_decoded_options[i++]);
      92              : 
      93            0 :       *in_decoded_options_count = i;
      94            0 :       *in_decoded_options = new_decoded_options;
      95              :     }
      96              : #endif
      97              : }
      98              : 
      99              : /* Called before linking.  Returns 0 on success and -1 on failure.  */
     100              : int
     101       116059 : lang_specific_pre_link (void)
     102              : {
     103       116059 :   return 0;  /* Not used for C.  */
     104              : }
     105              : 
     106              : /* Number of extra output files that lang_specific_pre_link may generate.  */
     107              : int lang_specific_extra_outfiles = 0;  /* Not used for C.  */