gcc/config/i386/xm-djgpp.h

   1 /* Configuration for GCC for Intel 80386 running DJGPP.
   2    Copyright (C) 1988, 1996, 1998, 1999, 2000, 2001 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
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Use semicolons to separate elements of a path.  */
  22 #define PATH_SEPARATOR ';'
  23
  24 #define HOST_EXECUTABLE_SUFFIX ".exe"
  25
  26 /* System dependent initialization for collect2
  27    to tell system() to act like Unix.  */
  28 #define COLLECT2_HOST_INITIALIZATION \
  29   do { __system_flags |= (__system_allow_multiple_cmds                  \
  30                           | __system_emulate_chdir); } while (0)
  31
  32 /* Define a version appropriate for DOS.  */
  33 #undef XREF_FILE_NAME
  34 #define XREF_FILE_NAME(xref_file, file) \
  35   do { \
  36     const char xref_ext[] = ".gxref"; \
  37     strcpy (xref_file, file); \
  38     s = basename (xref_file); \
  39     t = strchr (s, '.'); \
  40     if (t) \
  41       strcpy (t, xref_ext); \
  42     else \
  43       strcat (xref_file, xref_ext); \
  44   } while (0)
  45
  46 #undef GCC_DRIVER_HOST_INITIALIZATION
  47 #define GCC_DRIVER_HOST_INITIALIZATION \
  48   do { \
  49     /* If the environment variable DJDIR is not defined, then DJGPP is not \
  50        installed correctly and GCC will quickly become confused with the \
  51        default prefix settings. Report the problem now so the user doesn't \
  52        receive deceptive "file not found" error messages later.  */ \
  53     char *djdir = getenv ("DJDIR"); \
  54     if (djdir == NULL) \
  55       { \
  56         /* DJDIR is automatically defined by the DJGPP environment config \
  57            file pointed to by the environment variable DJGPP. Examine DJGPP \
  58            to try and figure out what's wrong.  */ \
  59         char *djgpp = getenv ("DJGPP"); \
  60         if (djgpp == NULL) \
  61           fatal ("environment variable DJGPP not defined"); \
  62         else if (access (djgpp, R_OK) == 0) \
  63           fatal ("environment variable DJGPP points to missing file '%s'", \
  64                  djgpp); \
  65         else \
  66           fatal ("environment variable DJGPP points to corrupt file '%s'", \
  67                   djgpp); \
  68       } \
  69   } while (0)
  70
  71 /* Canonicalize paths containing '/dev/env/'; used in prefix.c.
  72    _fixpath is a djgpp-specific function to canonicalize a path.
  73    "/dev/env/DJDIR" evaluates to "c:/djgpp" if DJDIR is "c:/djgpp" for
  74    example.  It removes any trailing '/', so add it back.  */
  75 /* We cannot free PATH below as it can point to string constant  */
  76 #define UPDATE_PATH_HOST_CANONICALIZE(PATH) \
  77   if (memcmp ((PATH), "/dev/env/", sizeof("/dev/env/") - 1) == 0) \
  78     {                                           \
  79       static char fixed_path[FILENAME_MAX + 1]; \
  80                                                 \
  81       _fixpath ((PATH), fixed_path);            \
  82       strcat (fixed_path, "/");                 \
  83       (PATH) = xstrdup (fixed_path);            \
  84     }