gcc/config/i386/xm-djgpp.h

   1 /* Configuration for GCC for Intel 80386 running DJGPP.
   2    Copyright (C) 1988-2015 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 3, 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 COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 /* Use semicolons to separate elements of a path.  */
  21 #define PATH_SEPARATOR ';'
  22
  23 #define HOST_EXECUTABLE_SUFFIX ".exe"
  24
  25 /* System dependent initialization for collect2
  26    to tell system() to act like Unix.  */
  27 #define COLLECT2_HOST_INITIALIZATION \
  28   do { __system_flags |= (__system_allow_multiple_cmds                  \
  29                           | __system_emulate_chdir); } while (0)
  30
  31 /* Define a version appropriate for DOS.  */
  32 #undef XREF_FILE_NAME
  33 #define XREF_FILE_NAME(xref_file, file) \
  34   do { \
  35     const char xref_ext[] = ".gxref"; \
  36     strcpy (xref_file, file); \
  37     s = basename (xref_file); \
  38     t = strchr (s, '.'); \
  39     if (t) \
  40       strcpy (t, xref_ext); \
  41     else \
  42       strcat (xref_file, xref_ext); \
  43   } while (0)
  44
  45 #undef GCC_DRIVER_HOST_INITIALIZATION
  46 #define GCC_DRIVER_HOST_INITIALIZATION \
  47   do { \
  48     /* If the environment variable DJDIR is not defined, then DJGPP is not \
  49        installed correctly and GCC will quickly become confused with the \
  50        default prefix settings. Report the problem now so the user doesn't \
  51        receive deceptive "file not found" error messages later.  */ \
  52     char *djdir = getenv ("DJDIR"); \
  53     if (djdir == NULL) \
  54       { \
  55         /* DJDIR is automatically defined by the DJGPP environment config \
  56            file pointed to by the environment variable DJGPP. Examine DJGPP \
  57            to try and figure out what's wrong.  */ \
  58         char *djgpp = getenv ("DJGPP"); \
  59         if (djgpp == NULL) \
  60           fatal ("environment variable DJGPP not defined"); \
  61         else if (access (djgpp, R_OK) == 0) \
  62           fatal ("environment variable DJGPP points to missing file '%s'", \
  63                  djgpp); \
  64         else \
  65           fatal ("environment variable DJGPP points to corrupt file '%s'", \
  66                   djgpp); \
  67       } \
  68   } while (0)
  69
  70 /* Canonicalize paths containing '/dev/env/'; used in prefix.c.
  71    _fixpath is a djgpp-specific function to canonicalize a path.
  72    "/dev/env/DJDIR" evaluates to "c:/djgpp" if DJDIR is "c:/djgpp" for
  73    example.  It removes any trailing '/', so add it back.  */
  74 /* We cannot free PATH below as it can point to string constant  */
  75 #define UPDATE_PATH_HOST_CANONICALIZE(PATH) \
  76   if (memcmp ((PATH), "/dev/env/", sizeof("/dev/env/") - 1) == 0) \
  77     {                                           \
  78       static char fixed_path[FILENAME_MAX + 1]; \
  79                                                 \
  80       _fixpath ((PATH), fixed_path);            \
  81       strcat (fixed_path, "/");                 \
  82       (PATH) = xstrdup (fixed_path);            \
  83     }