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//===- Config.h -------------------------------------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/BinaryFormat/Wasm.h"
#include "llvm/Support/CachePruning.h"
namespace lld {
namespace wasm {
// For --unresolved-symbols.
enum class UnresolvedPolicy { ReportError, Warn, Ignore };
// This struct contains the global configuration for the linker.
// Most fields are direct mapping from the command line options
// and such fields have the same name as the corresponding options.
// Most fields are initialized by the driver.
struct Configuration {
bool bsymbolic;
bool checkFeatures;
bool compressRelocations;
bool demangle;
bool disableVerify;
bool experimentalPic;
bool emitRelocs;
bool exportAll;
bool exportDynamic;
bool exportTable;
bool growableTable;
bool gcSections;
bool importMemory;
bool sharedMemory;
bool importTable;
bool importUndefined;
llvm::Optional<bool> is64;
bool mergeDataSegments;
bool pie;
bool printGcSections;
bool relocatable;
bool saveTemps;
bool shared;
bool stripAll;
bool stripDebug;
bool stackFirst;
bool trace;
uint64_t globalBase;
uint64_t initialMemory;
uint64_t maxMemory;
uint64_t zStackSize;
unsigned ltoPartitions;
unsigned ltoo;
unsigned optimize;
llvm::StringRef thinLTOJobs;
bool ltoNewPassManager;
bool ltoDebugPassManager;
UnresolvedPolicy unresolvedSymbols;
llvm::StringRef entry;
llvm::StringRef mapFile;
llvm::StringRef outputFile;
llvm::StringRef thinLTOCacheDir;
llvm::StringSet<> allowUndefinedSymbols;
llvm::StringSet<> exportedSymbols;
std::vector<llvm::StringRef> requiredExports;
std::vector<llvm::StringRef> searchPaths;
llvm::CachePruningPolicy thinLTOCachePolicy;
llvm::Optional<std::vector<std::string>> features;
// The following config options do not directly correspond to any
// particular command line options.
// True if we are creating position-independent code.
bool isPic;
// True if we have an MVP input that uses __indirect_function_table and which
// requires it to be allocated to table number 0.
bool legacyFunctionTable = false;
// The table offset at which to place function addresses. We reserve zero
// for the null function pointer. This gets set to 1 for executables and 0
// for shared libraries (since they always added to a dynamic offset at
// runtime).
uint32_t tableBase = 0;
// Will be set to true if bss data segments should be emitted. In most cases
// this is not necessary.
bool emitBssSegments = false;
// The only instance of Configuration struct.
extern Configuration *config;
} // namespace wasm
} // namespace lld