gcc/genmddeps.c

   1 /* genmddeps.c - creates a makefile dependency fragment for the md file.
   2    Copyright (C) 2004-2020 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify it
   5    under the terms of the GNU General Public License as published by the
   6    Free Software Foundation; either version 3, or (at your option) any
   7    later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; see the file COPYING3.  If not see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include "bconfig.h"
  19 #include "system.h"
  20 #include "coretypes.h"
  21 #include "errors.h"
  22 #include "statistics.h"
  23 #include "vec.h"
  24 #include "read-md.h"
  25
  26
  27 struct filedep
  28 {
  29   struct filedep *next;
  30   const char *pathname;
  31 };
  32
  33 static struct filedep *deps, **last = &deps;
  34
  35 static void
  36 add_filedep (const char *pathname)
  37 {
  38   struct filedep *n = XNEW (struct filedep);
  39   n->pathname = pathname;
  40   *last = n;
  41   last = &n->next;
  42 }
  43
  44 int
  45 main (int argc, const char **argv)
  46 {
  47   struct filedep *d;
  48
  49   progname = "genmddeps";
  50   include_callback = add_filedep;
  51
  52   noop_reader reader;
  53   if (!reader.read_md_files (argc, argv, NULL))
  54     return FATAL_EXIT_CODE;
  55
  56   *last = NULL;
  57
  58   /* Output a variable containing all of the include files.  */
  59   fputs ("MD_INCLUDES =", stdout);
  60   for (d = deps; d ; d = d->next)
  61     printf (" \\\n\t%s", d->pathname);
  62   putchar ('\n');
  63
  64   /* Output make targets for these includes with empty actions.  This
  65      will guard against make errors when includes are removed.  */
  66   for (d = deps; d ; d = d->next)
  67     printf ("\n%s:\n", d->pathname);
  68
  69   fflush (stdout);
  70   return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
  71 }