cppdefault.c

/* CPP Library.
   Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   1999, 2000, 2003, 2004, 2006, 2007, 2010, 2011
   Free Software Foundation, Inc.
   Contributed by Per Bothner, 1994-95.
   Based on CCCP program by Paul Rubin, June 1986
   Adapted to ANSI C, Richard Stallman, Jan 1987

   This program 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.

   This program 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 this program; see the file COPYING3.  If not see
   <http://www.gnu.org/licenses/>.  */

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "cppdefault.h"

#ifndef NATIVE_SYSTEM_HEADER_COMPONENT
#define NATIVE_SYSTEM_HEADER_COMPONENT 0
#endif

#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
# undef LOCAL_INCLUDE_DIR
# undef NATIVE_SYSTEM_HEADER_DIR
#else
# undef CROSS_INCLUDE_DIR
#endif

const struct default_include cpp_include_defaults[]
#ifdef INCLUDE_DEFAULTS
= INCLUDE_DEFAULTS;
#else
= {
#ifdef GPLUSPLUS_INCLUDE_DIR
    /* Pick up GNU C++ generic include files.  */
    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,
      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
#endif
#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
    /* Pick up GNU C++ target-dependent include files.  */
    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,
      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },
#endif
#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
    /* Pick up GNU C++ backward and deprecated include files.  */
    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,
      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
#endif
#ifdef GCC_INCLUDE_DIR
    /* This is the dir for gcc's private headers.  */
    { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
#endif
#ifdef LOCAL_INCLUDE_DIR
    /* /usr/local/include comes before the fixincluded header files.  */
    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
#endif
#ifdef PREFIX_INCLUDE_DIR
    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
#endif
#ifdef FIXED_INCLUDE_DIR
    /* This is the dir for fixincludes.  */
    { FIXED_INCLUDE_DIR, "GCC", 0, 0, 0,
      /* A multilib suffix needs adding if different multilibs use
	 different headers.  */
#ifdef SYSROOT_HEADERS_SUFFIX_SPEC
      1
#else
      0
#endif
    },
#endif
#ifdef CROSS_INCLUDE_DIR
    /* One place the target system's headers might be.  */
    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
#endif
#ifdef TOOL_INCLUDE_DIR
    /* Another place the target system's headers might be.  */
    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
#endif
#ifdef NATIVE_SYSTEM_HEADER_DIR
    /* /usr/include comes dead last.  */
    { NATIVE_SYSTEM_HEADER_DIR, NATIVE_SYSTEM_HEADER_COMPONENT, 0, 0, 1, 0 },
#endif
    { 0, 0, 0, 0, 0, 0 }
  };
#endif /* no INCLUDE_DEFAULTS */

#ifdef GCC_INCLUDE_DIR
const char cpp_GCC_INCLUDE_DIR[] = GCC_INCLUDE_DIR;
const size_t cpp_GCC_INCLUDE_DIR_len = sizeof GCC_INCLUDE_DIR - 8;
#else
const char cpp_GCC_INCLUDE_DIR[] = "";
const size_t cpp_GCC_INCLUDE_DIR_len = 0;
#endif

/* The configured prefix.  */
const char cpp_PREFIX[] = PREFIX;
const size_t cpp_PREFIX_len = sizeof PREFIX - 1;
const char cpp_EXEC_PREFIX[] = STANDARD_EXEC_PREFIX;

/* This value is set by cpp_relocated at runtime */
const char *gcc_exec_prefix;

/* Return true if the toolchain is relocated.  */
bool
cpp_relocated (void)
{
  static int relocated = -1;

  /* A relocated toolchain ignores standard include directories.  */
  if (relocated == -1)
    {
      /* Check if the toolchain was relocated?  */
      gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
      if (gcc_exec_prefix)
       relocated = 1;
      else
       relocated = 0;
    }

  return relocated;
}