old-autovect-branch/gcc/config/i386/xm-djgpp.h

   1 /* Configuration for GCC for Intel 80386 running DJGPP.
   2    Copyright (C) 1988, 1996, 1998, 1999, 2000, 2001, 2004
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 /* Use semicolons to separate elements of a path.  */
  23 #define PATH_SEPARATOR ';'
  24
  25 #define HOST_EXECUTABLE_SUFFIX ".exe"
  26
  27 /* System dependent initialization for collect2
  28    to tell system() to act like Unix.  */
  29 #define COLLECT2_HOST_INITIALIZATION \
  30   do { __system_flags |= (__system_allow_multiple_cmds                  \
  31                           | __system_emulate_chdir); } while (0)
  32
  33 /* Define a version appropriate for DOS.  */
  34 #undef XREF_FILE_NAME
  35 #define XREF_FILE_NAME(xref_file, file) \
  36   do { \
  37     const char xref_ext[] = ".gxref"; \
  38     strcpy (xref_file, file); \
  39     s = basename (xref_file); \
  40     t = strchr (s, '.'); \
  41     if (t) \
  42       strcpy (t, xref_ext); \
  43     else \
  44       strcat (xref_file, xref_ext); \
  45   } while (0)
  46
  47 #undef GCC_DRIVER_HOST_INITIALIZATION
  48 #define GCC_DRIVER_HOST_INITIALIZATION \
  49   do { \
  50     /* If the environment variable DJDIR is not defined, then DJGPP is not \
  51        installed correctly and GCC will quickly become confused with the \
  52        default prefix settings. Report the problem now so the user doesn't \
  53        receive deceptive "file not found" error messages later.  */ \
  54     char *djdir = getenv ("DJDIR"); \
  55     if (djdir == NULL) \
  56       { \
  57         /* DJDIR is automatically defined by the DJGPP environment config \
  58            file pointed to by the environment variable DJGPP. Examine DJGPP \
  59            to try and figure out what's wrong.  */ \
  60         char *djgpp = getenv ("DJGPP"); \
  61         if (djgpp == NULL) \
  62           fatal ("environment variable DJGPP not defined"); \
  63         else if (access (djgpp, R_OK) == 0) \
  64           fatal ("environment variable DJGPP points to missing file '%s'", \
  65                  djgpp); \
  66         else \
  67           fatal ("environment variable DJGPP points to corrupt file '%s'", \
  68                   djgpp); \
  69       } \
  70   } while (0)
  71
  72 /* Canonicalize paths containing '/dev/env/'; used in prefix.c.
  73    _fixpath is a djgpp-specific function to canonicalize a path.
  74    "/dev/env/DJDIR" evaluates to "c:/djgpp" if DJDIR is "c:/djgpp" for
  75    example.  It removes any trailing '/', so add it back.  */
  76 /* We cannot free PATH below as it can point to string constant  */
  77 #define UPDATE_PATH_HOST_CANONICALIZE(PATH) \
  78   if (memcmp ((PATH), "/dev/env/", sizeof("/dev/env/") - 1) == 0) \
  79     {                                           \
  80       static char fixed_path[FILENAME_MAX + 1]; \
  81                                                 \
  82       _fixpath ((PATH), fixed_path);            \
  83       strcat (fixed_path, "/");                 \
  84       (PATH) = xstrdup (fixed_path);            \
  85     }