gcc/cppdefault.h

   1 /* CPP Library.
   2    Copyright (C) 1986-2023 Free Software Foundation, Inc.
   3    Contributed by Per Bothner, 1994-95.
   4    Based on CCCP program by Paul Rubin, June 1986
   5    Adapted to ANSI C, Richard Stallman, Jan 1987
   6
   7    This program is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by the
   9    Free Software Foundation; either version 3, or (at your option) any
  10    later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_CPPDEFAULT_H
  22 #define GCC_CPPDEFAULT_H
  23
  24 /* This is the default list of directories to search for include files.
  25    It may be overridden by the various -I and -ixxx options.
  26
  27    #include "file" looks in the same directory as the current file,
  28    then this list.
  29    #include <file> just looks in this list.
  30
  31    All these directories are treated as `system' include directories
  32    (they are not subject to pedantic warnings in some cases).  */
  33
  34 struct default_include
  35 {
  36   const char *const fname;      /* The name of the directory.  */
  37   const char *const component;  /* The component containing the directory
  38                                    (see update_path in prefix.cc) */
  39   const char cplusplus;         /* When this is non-zero, we should only
  40                                    consider this if we're compiling C++.
  41                                    When the -stdlib option is configured, this
  42                                    may take values greater than 1 to indicate
  43                                    which C++ standard library should be
  44                                    used.  */
  45   const char cxx_aware;         /* Includes in this directory don't need to
  46                                    be wrapped in extern "C" when compiling
  47                                    C++.  */
  48   const char add_sysroot;       /* FNAME should be prefixed by
  49                                    cpp_SYSROOT.  */
  50   const char multilib;          /* FNAME should have appended
  51                                    - the multilib path specified with -imultilib
  52                                      when set to 1,
  53                                    - the multiarch path specified with
  54                                      -imultiarch, when set to 2.  */
  55 };
  56
  57 extern const struct default_include cpp_include_defaults[];
  58 extern const char cpp_GCC_INCLUDE_DIR[];
  59 extern const size_t cpp_GCC_INCLUDE_DIR_len;
  60
  61 /* The configure-time prefix, i.e., the value supplied as the argument
  62    to --prefix=.  */
  63 extern const char cpp_PREFIX[];
  64 /* The length of the configure-time prefix.  */
  65 extern const size_t cpp_PREFIX_len;
  66 /* The configure-time execution prefix.  This is typically the lib/gcc
  67    subdirectory of cpp_PREFIX.  */
  68 extern const char cpp_EXEC_PREFIX[];
  69 /* The run-time execution prefix.  This is typically the lib/gcc
  70    subdirectory of the actual installation.  */
  71 extern const char *gcc_exec_prefix;
  72
  73 /* Return true if the toolchain is relocated.  */
  74 bool cpp_relocated (void);
  75
  76 #endif /* ! GCC_CPPDEFAULT_H */