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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
106 lines
4.0 KiB
C++
106 lines
4.0 KiB
C++
//===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Construct a compiler invocation object for command line driver arguments
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/Utils.h"
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#include "clang/Basic/DiagnosticOptions.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/Action.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/Tool.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/Host.h"
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using namespace clang;
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using namespace llvm::opt;
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/// createInvocationFromCommandLine - Construct a compiler invocation object for
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/// a command line argument vector.
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///
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/// \return A CompilerInvocation, or 0 if none was built for the given
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/// argument vector.
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std::unique_ptr<CompilerInvocation> clang::createInvocationFromCommandLine(
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ArrayRef<const char *> ArgList, IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
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IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) {
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if (!Diags.get()) {
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// No diagnostics engine was provided, so create our own diagnostics object
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// with the default options.
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Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions);
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}
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SmallVector<const char *, 16> Args(ArgList.begin(), ArgList.end());
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// FIXME: Find a cleaner way to force the driver into restricted modes.
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Args.push_back("-fsyntax-only");
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// FIXME: We shouldn't have to pass in the path info.
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driver::Driver TheDriver(Args[0], llvm::sys::getDefaultTargetTriple(),
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*Diags, VFS);
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// Don't check that inputs exist, they may have been remapped.
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TheDriver.setCheckInputsExist(false);
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std::unique_ptr<driver::Compilation> C(TheDriver.BuildCompilation(Args));
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if (!C)
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return nullptr;
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// Just print the cc1 options if -### was present.
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if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) {
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C->getJobs().Print(llvm::errs(), "\n", true);
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return nullptr;
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}
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// We expect to get back exactly one command job, if we didn't something
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// failed. Offload compilation is an exception as it creates multiple jobs. If
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// that's the case, we proceed with the first job. If caller needs a
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// particular job, it should be controlled via options (e.g.
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// --cuda-{host|device}-only for CUDA) passed to the driver.
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const driver::JobList &Jobs = C->getJobs();
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bool OffloadCompilation = false;
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if (Jobs.size() > 1) {
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for (auto &A : C->getActions()){
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// On MacOSX real actions may end up being wrapped in BindArchAction
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if (isa<driver::BindArchAction>(A))
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A = *A->input_begin();
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if (isa<driver::OffloadAction>(A)) {
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OffloadCompilation = true;
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break;
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}
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}
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}
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if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) ||
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(Jobs.size() > 1 && !OffloadCompilation)) {
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SmallString<256> Msg;
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llvm::raw_svector_ostream OS(Msg);
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Jobs.Print(OS, "; ", true);
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Diags->Report(diag::err_fe_expected_compiler_job) << OS.str();
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return nullptr;
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}
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const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin());
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if (StringRef(Cmd.getCreator().getName()) != "clang") {
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Diags->Report(diag::err_fe_expected_clang_command);
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return nullptr;
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}
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const ArgStringList &CCArgs = Cmd.getArguments();
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auto CI = llvm::make_unique<CompilerInvocation>();
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if (!CompilerInvocation::CreateFromArgs(*CI,
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const_cast<const char **>(CCArgs.data()),
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const_cast<const char **>(CCArgs.data()) +
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CCArgs.size(),
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*Diags))
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return nullptr;
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return CI;
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}
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