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authorIan Lance Taylor <iant@google.com>2007-09-21 07:20:01 +0000
committerIan Lance Taylor <iant@google.com>2007-09-21 07:20:01 +0000
commit7e1edb9089c4eec761d09d9bb0ce675eb0bcbc2b (patch)
tree8e9869d1fd6febfdfdc5e754ba12f36e899d9bb2 /gold/parameters.h
parentbe9d5a933eb75809b583dc29bc7deb7690954d12 (diff)
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Add global parameters.
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+// parameters.h -- general parameters for a link using gold -*- C++ -*-
+
+#ifndef GOLD_PARAMETERS_H
+#define GOLD_PARAMETERS_H
+
+namespace gold
+{
+
+class General_options;
+
+// Here we define the Parameters class which simply holds simple
+// general parameters which apply to the entire link. We use a global
+// variable for this. This is in contrast to the General_options
+// class, which holds the complete state of position independent
+// command line options. The hope is that Parameters will stay fairly
+// simple, so that if this turns into a library it will be clear how
+// these parameters should be set.
+
+class Parameters
+{
+ public:
+ Parameters(const General_options*);
+
+ // Whether we are generating a regular executable.
+ bool
+ output_is_executable() const
+ { return this->output_file_type_ == OUTPUT_EXECUTABLE; }
+
+ // Whether we are generating a shared library.
+ bool
+ output_is_shared() const
+ { return this->output_file_type_ == OUTPUT_SHARED; }
+
+ // Whether we are generating an object file.
+ bool
+ output_is_object() const
+ { return this->output_file_type_ == OUTPUT_OBJECT; }
+
+ // The general linker optimization level.
+ int
+ optimization_level() const
+ { return this->optimization_level_; }
+
+ private:
+ // The types of output files.
+ enum Output_file_type
+ {
+ // Generating executable.
+ OUTPUT_EXECUTABLE,
+ // Generating shared library.
+ OUTPUT_SHARED,
+ // Generating object file.
+ OUTPUT_OBJECT
+ };
+
+ // The type of the output file.
+ Output_file_type output_file_type_;
+ // The optimization level.
+ int optimization_level_;
+};
+
+// This is a global variable.
+extern const Parameters* parameters;
+
+// Initialize the global variable.
+extern void initialize_parameters(const General_options*);
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_PARAMATERS_H)