1  /* Configuration for GCC for Intel 80386 running DJGPP.
       2     Copyright (C) 1988-2023 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