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[thirdparty/gcc.git] / gcc / config / i386 / xm-djgpp.h

/* Configuration for GCC for Intel 80386 running DJGPP.
   Copyright (C) 1988-2019 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

/* Use semicolons to separate elements of a path.  */
#define PATH_SEPARATOR ';'

#define HOST_EXECUTABLE_SUFFIX ".exe"

/* Define standard DJGPP installation paths.  */
/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
/* points to actual DJGPP installation directory.  */

/* Native system include directory */
#undef NATIVE_SYSTEM_HEADER_DIR
#define NATIVE_SYSTEM_HEADER_DIR "/dev/env/DJDIR/include/"

/* Search for as.exe and ld.exe in DJGPP's binary directory.  */
#undef MD_EXEC_PREFIX
#define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"

/* Standard DJGPP library and startup files */
#undef STANDARD_STARTFILE_PREFIX_1
#define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"

/* Define STANDARD_STARTFILE_PREFIX_2 equal to STANDARD_STARTFILE_PREFIX_1
   to avoid gcc.c redefining it to /usr/lib */
#undef STANDARD_STARTFILE_PREFIX_2
#define STANDARD_STARTFILE_PREFIX_1 "/dev/env/DJDIR/lib/"

/* Make sure that gcc will not look for .h files in /usr/local/include
   unless user explicitly requests it.  */
#undef LOCAL_INCLUDE_DIR

/* System dependent initialization for collect2
   to tell system() to act like Unix.  */
#define COLLECT2_HOST_INITIALIZATION \
  do { __system_flags |= (__system_allow_multiple_cmds			\
		          | __system_emulate_chdir); } while (0)

/* Define a version appropriate for DOS.  */
#undef XREF_FILE_NAME
#define XREF_FILE_NAME(xref_file, file) \
  do { \
    const char xref_ext[] = ".gxref"; \
    strcpy (xref_file, file); \
    s = basename (xref_file); \
    t = strchr (s, '.'); \
    if (t) \
      strcpy (t, xref_ext); \
    else \
      strcat (xref_file, xref_ext); \
  } while (0)

#undef GCC_DRIVER_HOST_INITIALIZATION
#define GCC_DRIVER_HOST_INITIALIZATION \
  do { \
    /* If the environment variable DJDIR is not defined, then DJGPP is not \
       installed correctly and GCC will quickly become confused with the \
       default prefix settings. Report the problem now so the user doesn't \
       receive deceptive "file not found" error messages later.  */ \
    char *djdir = getenv ("DJDIR"); \
    if (djdir == NULL) \
      { \
        /* DJDIR is automatically defined by the DJGPP environment config \
           file pointed to by the environment variable DJGPP. Examine DJGPP \
           to try and figure out what's wrong.  */ \
        char *djgpp = getenv ("DJGPP"); \
        if (djgpp == NULL) \
          fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP not defined"); \
        else if (access (djgpp, R_OK) == 0) \
          fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to missing file '%s'", \
                 djgpp); \
        else \
          fatal_error (UNKNOWN_LOCATION, "environment variable DJGPP points to corrupt file '%s'", \
                  djgpp); \
      } \
  } while (0)

/* Canonicalize paths containing '/dev/env/'; used in prefix.c.
   _fixpath is a djgpp-specific function to canonicalize a path.
   "/dev/env/DJDIR" evaluates to "c:/djgpp" if DJDIR is "c:/djgpp" for
   example.  It removes any trailing '/', so add it back.  */
/* We cannot free PATH below as it can point to string constant  */
#define UPDATE_PATH_HOST_CANONICALIZE(PATH) \
  if (memcmp ((PATH), "/dev/env/", sizeof("/dev/env/") - 1) == 0) \
    {						\
      static char fixed_path[FILENAME_MAX + 1];	\
						\
      _fixpath ((PATH), fixed_path);		\
      strcat (fixed_path, "/");			\
      (PATH) = xstrdup (fixed_path);		\
    }

#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT 128

/* DJGPP versions up to current (2.05) have ftw.h but only ftw() not nftw().
   Disable use of ftw.h */
#undef HAVE_FTW_H