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/* CPP Library.
Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2003, 2004, 2006, 2007 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 STANDARD_INCLUDE_DIR
#define STANDARD_INCLUDE_DIR "/usr/include"
#endif

#ifndef STANDARD_INCLUDE_COMPONENT
#define STANDARD_INCLUDE_COMPONENT 0
#endif

#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
# undef LOCAL_INCLUDE_DIR
# undef SYSTEM_INCLUDE_DIR
# undef STANDARD_INCLUDE_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, 0, 0 },
#endif
#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
    /* Pick up GNU C++ target-dependent include files. */
    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, 0, 1 },
#endif
#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
    /* Pick up GNU C++ backward and deprecated include files. */
    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, 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 GCC_INCLUDE_DIR
    /* This is the dir for gcc's private headers. */
    { GCC_INCLUDE_DIR, "GCC", 0, 0, 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 SYSTEM_INCLUDE_DIR
    /* Some systems have an extra dir of include files. */
    { SYSTEM_INCLUDE_DIR, 0, 0, 0, 1, 0 },
#endif
#ifdef STANDARD_INCLUDE_DIR
    /* /usr/include comes dead last. */
    { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_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? */
      GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
      if (gcc_exec_prefix)
       relocated = 1;
      else
       relocated = 0;
    }

  return relocated;
}
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