xm-djgpp.h revision 132718 
1/* Configuration for GCC for Intel 80386 running DJGPP.
2   Copyright (C) 1988, 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING.  If not, write to
18the Free Software Foundation, 59 Temple Place - Suite 330,
19Boston, 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    }
85