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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_GN_NINJA_C_BINARY_TARGET_WRITER_H_
#define TOOLS_GN_NINJA_C_BINARY_TARGET_WRITER_H_
#include "base/macros.h"
#include "gn/config_values.h"
#include "gn/ninja_binary_target_writer.h"
#include "gn/toolchain.h"
#include "gn/unique_vector.h"
struct EscapeOptions;
// Writes a .ninja file for a binary target type (an executable, a shared
// library, or a static library).
class NinjaCBinaryTargetWriter : public NinjaBinaryTargetWriter {
public:
NinjaCBinaryTargetWriter(const Target* target, std::ostream& out);
~NinjaCBinaryTargetWriter() override;
void Run() override;
private:
using OutputFileSet = std::set<OutputFile>;
// Writes all flags for the compiler: includes, defines, cflags, etc.
void WriteCompilerVars();
// Writes build lines required for precompiled headers. Any generated
// object files will be appended to the |object_files|. Any generated
// non-object files (for instance, .gch files from a GCC toolchain, are
// appended to |other_files|).
//
// input_deps is the stamp file collecting the dependencies required before
// compiling this target. It will be empty if there are no input deps.
void WritePCHCommands(const std::vector<OutputFile>& input_deps,
const std::vector<OutputFile>& order_only_deps,
std::vector<OutputFile>* object_files,
std::vector<OutputFile>* other_files);
// Writes a .pch compile build line for a language type.
void WritePCHCommand(const Substitution* flag_type,
const char* tool_name,
CTool::PrecompiledHeaderType header_type,
const std::vector<OutputFile>& input_deps,
const std::vector<OutputFile>& order_only_deps,
std::vector<OutputFile>* object_files,
std::vector<OutputFile>* other_files);
void WriteGCCPCHCommand(const Substitution* flag_type,
const char* tool_name,
const std::vector<OutputFile>& input_deps,
const std::vector<OutputFile>& order_only_deps,
std::vector<OutputFile>* gch_files);
void WriteWindowsPCHCommand(const Substitution* flag_type,
const char* tool_name,
const std::vector<OutputFile>& input_deps,
const std::vector<OutputFile>& order_only_deps,
std::vector<OutputFile>* object_files);
// pch_deps are additional dependencies to run before the rule. They are
// expected to abide by the naming conventions specified by GetPCHOutputFiles.
//
// order_only_dep are the dependencies that must be run before doing any
// compiles.
//
// The files produced by the compiler will be added to two output vectors.
void WriteSources(const std::vector<OutputFile>& pch_deps,
const std::vector<OutputFile>& input_deps,
const std::vector<OutputFile>& order_only_deps,
std::vector<OutputFile>* object_files,
std::vector<SourceFile>* other_files);
void WriteLinkerStuff(const std::vector<OutputFile>& object_files,
const std::vector<SourceFile>& other_files,
const std::vector<OutputFile>& input_deps);
void WriteOutputSubstitutions();
void WriteLibsList(const std::string& label,
const std::vector<OutputFile>& libs);
// Writes the implicit dependencies for the link or stamp line. This is
// the "||" and everything following it on the ninja line.
//
// The order-only dependencies are the non-linkable deps passed in as an
// argument, plus the data file depdencies in the target.
void WriteOrderOnlyDependencies(
const UniqueVector<const Target*>& non_linkable_deps);
// Checks for duplicates in the given list of output files. If any duplicates
// are found, throws an error and return false.
bool CheckForDuplicateObjectFiles(const std::vector<OutputFile>& files) const;
const CTool* tool_;
DISALLOW_COPY_AND_ASSIGN(NinjaCBinaryTargetWriter);
};
#endif // TOOLS_GN_NINJA_C_BINARY_TARGET_WRITER_H_