llvm/clang/tools/driver/driver.cpp

//===-- driver.cpp - Clang GCC-Compatible Driver --------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This is the entry point to the clang driver; it is a thin wrapper
// for functionality in the Driver clang library.
//
//===----------------------------------------------------------------------===//

#include "clang/Driver/Driver.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/HeaderInclude.h"
#include "clang/Basic/Stack.h"
#include "clang/Config/config.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/ToolChain.h"
#include "clang/Frontend/ChainedDiagnosticConsumer.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/SerializedDiagnosticPrinter.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Frontend/Utils.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Config/llvm-config.h" // for LLVM_ON_UNIX
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/BuryPointer.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/CrashRecoveryContext.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/LLVMDriver.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/StringSaver.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Host.h"
#include <memory>
#include <optional>
#include <set>
#include <system_error>

usingnamespaceclang;
usingnamespaceclang::driver;
usingnamespacellvm::opt;

std::string GetExecutablePath(const char *Argv0, bool CanonicalPrefixes) { … }

static const char *GetStableCStr(llvm::StringSet<> &SavedStrings, StringRef S) { … }

extern int cc1_main(ArrayRef<const char *> Argv, const char *Argv0,
                    void *MainAddr);
extern int cc1as_main(ArrayRef<const char *> Argv, const char *Argv0,
                      void *MainAddr);
extern int cc1gen_reproducer_main(ArrayRef<const char *> Argv,
                                  const char *Argv0, void *MainAddr,
                                  const llvm::ToolContext &);

static void insertTargetAndModeArgs(const ParsedClangName &NameParts,
                                    SmallVectorImpl<const char *> &ArgVector,
                                    llvm::StringSet<> &SavedStrings) { … }

static void getCLEnvVarOptions(std::string &EnvValue, llvm::StringSaver &Saver,
                               SmallVectorImpl<const char *> &Opts) { … }

template <class T>
static T checkEnvVar(const char *EnvOptSet, const char *EnvOptFile,
                     std::string &OptFile) { … }

static bool SetBackdoorDriverOutputsFromEnvVars(Driver &TheDriver) { … }

static void FixupDiagPrefixExeName(TextDiagnosticPrinter *DiagClient,
                                   const std::string &Path) { … }

static int ExecuteCC1Tool(SmallVectorImpl<const char *> &ArgV,
                          const llvm::ToolContext &ToolContext) { … }

int clang_main(int Argc, char **Argv, const llvm::ToolContext &ToolContext) { … }