gold/parameters.h

   1 // parameters.h -- general parameters for a link using gold  -*- C++ -*-
   2
   3 // Copyright 2006, 2007 Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@google.com>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 #ifndef GOLD_PARAMETERS_H
  24 #define GOLD_PARAMETERS_H
  25
  26 namespace gold
  27 {
  28
  29 class General_options;
  30
  31 // Here we define the Parameters class which simply holds simple
  32 // general parameters which apply to the entire link.  We use a global
  33 // variable for this.  This is in contrast to the General_options
  34 // class, which holds the complete state of position independent
  35 // command line options.  The hope is that Parameters will stay fairly
  36 // simple, so that if this turns into a library it will be clear how
  37 // these parameters should be set.
  38
  39 class Parameters
  40 {
  41  public:
  42   Parameters(const General_options*);
  43
  44   // Whether we are generating a regular executable.
  45   bool
  46   output_is_executable() const
  47   { return this->output_file_type_ == OUTPUT_EXECUTABLE; }
  48
  49   // Whether we are generating a shared library.
  50   bool
  51   output_is_shared() const
  52   { return this->output_file_type_ == OUTPUT_SHARED; }
  53
  54   // Whether we are generating an object file.
  55   bool
  56   output_is_object() const
  57   { return this->output_file_type_ == OUTPUT_OBJECT; }
  58
  59   // The general linker optimization level.
  60   int
  61   optimization_level() const
  62   { return this->optimization_level_; }
  63
  64  private:
  65   // The types of output files.
  66   enum Output_file_type
  67     {
  68       // Generating executable.
  69       OUTPUT_EXECUTABLE,
  70       // Generating shared library.
  71       OUTPUT_SHARED,
  72       // Generating object file.
  73       OUTPUT_OBJECT
  74     };
  75
  76   // The type of the output file.
  77   Output_file_type output_file_type_;
  78   // The optimization level.
  79   int optimization_level_;
  80 };
  81
  82 // This is a global variable.
  83 extern const Parameters* parameters;
  84
  85 // Initialize the global variable.
  86 extern void initialize_parameters(const General_options*);
  87
  88 } // End namespace gold.
  89
  90 #endif // !defined(GOLD_PARAMATERS_H)