gcc/config/i386/xm-djgpp.h

   1 /* Configuration for GCC for Intel 80386 running DJGPP.
   2    Copyright (C) 1988-2024 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 /* Define standard DJGPP installation paths.  */
  26 /* We override default /usr or /usr/local part with /dev/env/DJDIR which */
  27 /* points to actual DJGPP installation directory.  */
  28
  29 /* Native system include directory */
  30 #undef NATIVE_SYSTEM_HEADER_DIR
  31 #define NATIVE_SYSTEM_HEADER_DIR "/dev/env/DJDIR/include/"
  32
  33 /* Search for as.exe and ld.exe in DJGPP's binary directory.  */
  34 #undef MD_EXEC_PREFIX
  35 #define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
  36
  37 /* Standard DJGPP library and startup files */
  38 #undef STANDARD_STARTFILE_PREFIX_1
  39 #define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"
  40
  41 /* Define STANDARD_STARTFILE_PREFIX_2 equal to STANDARD_STARTFILE_PREFIX_1
  42    to avoid gcc.cc redefining it to /usr/lib */
  43 #undef STANDARD_STARTFILE_PREFIX_2
  44 #define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"
  45
  46 /* Make sure that gcc will not look for .h files in /usr/local/include
  47    unless user explicitly requests it.  */
  48 #undef LOCAL_INCLUDE_DIR
  49
  50 /* System dependent initialization for collect2
  51    to tell system() to act like Unix.  */
  52 #define COLLECT2_HOST_INITIALIZATION \
  53   do { __system_flags |= (__system_allow_multiple_cmds                  \
  54                           | __system_emulate_chdir); } while (0)
  55
  56 /* Define a version appropriate for DOS.  */
  57 #undef XREF_FILE_NAME
  58 #define XREF_FILE_NAME(xref_file, file) \
  59   do { \
  60     const char xref_ext[] = ".gxref"; \
  61     strcpy (xref_file, file); \
  62     s = basename (xref_file); \
  63     t = strchr (s, '.'); \
  64     if (t) \
  65       strcpy (t, xref_ext); \
  66     else \
  67       strcat (xref_file, xref_ext); \
  68   } while (0)
  69
  70 #undef GCC_DRIVER_HOST_INITIALIZATION
  71 #define GCC_DRIVER_HOST_INITIALIZATION \
  72   do { \
  73     /* If the environment variable DJDIR is not defined, then DJGPP is not \
  74        installed correctly and GCC will quickly become confused with the \
  75        default prefix settings. Report the problem now so the user doesn't \
  76        receive deceptive "file not found" error messages later.  */ \
  77     char *djdir = getenv ("DJDIR"); \
  78     if (djdir == NULL) \
  79       { \
  80         /* DJDIR is automatically defined by the DJGPP environment config \
  81            file pointed to by the environment variable DJGPP. Examine DJGPP \
  82            to try and figure out what's wrong.  */ \
  83         char *djgpp = getenv ("DJGPP"); \
  84         if (djgpp == NULL) \
  85           fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP not defined"); \
  86         else if (access (djgpp, R_OK) == 0) \
  87           fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to missing file %qs", \
  88                  djgpp); \
  89         else \
  90           fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to corrupt file %qs", \
  91                   djgpp); \
  92       } \
  93   } while (0)
  94
  95 /* Canonicalize paths containing '/dev/env/'; used in prefix.cc.
  96    _fixpath is a djgpp-specific function to canonicalize a path.
  97    "/dev/env/DJDIR" evaluates to "c:/djgpp" if DJDIR is "c:/djgpp" for
  98    example.  It removes any trailing '/', so add it back.  */
  99 /* We cannot free PATH below as it can point to string constant  */
 100 #define UPDATE_PATH_HOST_CANONICALIZE(PATH) \
 101   if (memcmp ((PATH), "/dev/env/", sizeof("/dev/env/") - 1) == 0) \
 102     {                                           \
 103       static char fixed_path[FILENAME_MAX + 1]; \
 104                                                 \
 105       _fixpath ((PATH), fixed_path);            \
 106       strcat (fixed_path, "/");                 \
 107       (PATH) = xstrdup (fixed_path);            \
 108     }
 109
 110 #undef MAX_OFILE_ALIGNMENT
 111 #define MAX_OFILE_ALIGNMENT 128
 112
 113 /* DJGPP versions up to current (2.05) have ftw.h but only ftw() not nftw().
 114    Disable use of ftw.h */
 115 #undef HAVE_FTW_H