1*0b57cec5SDimitry Andric //===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric // 9*0b57cec5SDimitry Andric // Construct a compiler invocation object for command line driver arguments 10*0b57cec5SDimitry Andric // 11*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 12*0b57cec5SDimitry Andric 13*0b57cec5SDimitry Andric #include "clang/Frontend/Utils.h" 14*0b57cec5SDimitry Andric #include "clang/Basic/DiagnosticOptions.h" 15*0b57cec5SDimitry Andric #include "clang/Driver/Compilation.h" 16*0b57cec5SDimitry Andric #include "clang/Driver/Driver.h" 17*0b57cec5SDimitry Andric #include "clang/Driver/Action.h" 18*0b57cec5SDimitry Andric #include "clang/Driver/Options.h" 19*0b57cec5SDimitry Andric #include "clang/Driver/Tool.h" 20*0b57cec5SDimitry Andric #include "clang/Frontend/CompilerInstance.h" 21*0b57cec5SDimitry Andric #include "clang/Frontend/FrontendDiagnostic.h" 22*0b57cec5SDimitry Andric #include "llvm/Option/ArgList.h" 23*0b57cec5SDimitry Andric #include "llvm/Support/Host.h" 24*0b57cec5SDimitry Andric using namespace clang; 25*0b57cec5SDimitry Andric using namespace llvm::opt; 26*0b57cec5SDimitry Andric 27*0b57cec5SDimitry Andric /// createInvocationFromCommandLine - Construct a compiler invocation object for 28*0b57cec5SDimitry Andric /// a command line argument vector. 29*0b57cec5SDimitry Andric /// 30*0b57cec5SDimitry Andric /// \return A CompilerInvocation, or 0 if none was built for the given 31*0b57cec5SDimitry Andric /// argument vector. 32*0b57cec5SDimitry Andric std::unique_ptr<CompilerInvocation> clang::createInvocationFromCommandLine( 33*0b57cec5SDimitry Andric ArrayRef<const char *> ArgList, IntrusiveRefCntPtr<DiagnosticsEngine> Diags, 34*0b57cec5SDimitry Andric IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) { 35*0b57cec5SDimitry Andric if (!Diags.get()) { 36*0b57cec5SDimitry Andric // No diagnostics engine was provided, so create our own diagnostics object 37*0b57cec5SDimitry Andric // with the default options. 38*0b57cec5SDimitry Andric Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions); 39*0b57cec5SDimitry Andric } 40*0b57cec5SDimitry Andric 41*0b57cec5SDimitry Andric SmallVector<const char *, 16> Args(ArgList.begin(), ArgList.end()); 42*0b57cec5SDimitry Andric 43*0b57cec5SDimitry Andric // FIXME: Find a cleaner way to force the driver into restricted modes. 44*0b57cec5SDimitry Andric Args.push_back("-fsyntax-only"); 45*0b57cec5SDimitry Andric 46*0b57cec5SDimitry Andric // FIXME: We shouldn't have to pass in the path info. 47*0b57cec5SDimitry Andric driver::Driver TheDriver(Args[0], llvm::sys::getDefaultTargetTriple(), 48*0b57cec5SDimitry Andric *Diags, VFS); 49*0b57cec5SDimitry Andric 50*0b57cec5SDimitry Andric // Don't check that inputs exist, they may have been remapped. 51*0b57cec5SDimitry Andric TheDriver.setCheckInputsExist(false); 52*0b57cec5SDimitry Andric 53*0b57cec5SDimitry Andric std::unique_ptr<driver::Compilation> C(TheDriver.BuildCompilation(Args)); 54*0b57cec5SDimitry Andric if (!C) 55*0b57cec5SDimitry Andric return nullptr; 56*0b57cec5SDimitry Andric 57*0b57cec5SDimitry Andric // Just print the cc1 options if -### was present. 58*0b57cec5SDimitry Andric if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) { 59*0b57cec5SDimitry Andric C->getJobs().Print(llvm::errs(), "\n", true); 60*0b57cec5SDimitry Andric return nullptr; 61*0b57cec5SDimitry Andric } 62*0b57cec5SDimitry Andric 63*0b57cec5SDimitry Andric // We expect to get back exactly one command job, if we didn't something 64*0b57cec5SDimitry Andric // failed. Offload compilation is an exception as it creates multiple jobs. If 65*0b57cec5SDimitry Andric // that's the case, we proceed with the first job. If caller needs a 66*0b57cec5SDimitry Andric // particular job, it should be controlled via options (e.g. 67*0b57cec5SDimitry Andric // --cuda-{host|device}-only for CUDA) passed to the driver. 68*0b57cec5SDimitry Andric const driver::JobList &Jobs = C->getJobs(); 69*0b57cec5SDimitry Andric bool OffloadCompilation = false; 70*0b57cec5SDimitry Andric if (Jobs.size() > 1) { 71*0b57cec5SDimitry Andric for (auto &A : C->getActions()){ 72*0b57cec5SDimitry Andric // On MacOSX real actions may end up being wrapped in BindArchAction 73*0b57cec5SDimitry Andric if (isa<driver::BindArchAction>(A)) 74*0b57cec5SDimitry Andric A = *A->input_begin(); 75*0b57cec5SDimitry Andric if (isa<driver::OffloadAction>(A)) { 76*0b57cec5SDimitry Andric OffloadCompilation = true; 77*0b57cec5SDimitry Andric break; 78*0b57cec5SDimitry Andric } 79*0b57cec5SDimitry Andric } 80*0b57cec5SDimitry Andric } 81*0b57cec5SDimitry Andric if (Jobs.size() == 0 || !isa<driver::Command>(*Jobs.begin()) || 82*0b57cec5SDimitry Andric (Jobs.size() > 1 && !OffloadCompilation)) { 83*0b57cec5SDimitry Andric SmallString<256> Msg; 84*0b57cec5SDimitry Andric llvm::raw_svector_ostream OS(Msg); 85*0b57cec5SDimitry Andric Jobs.Print(OS, "; ", true); 86*0b57cec5SDimitry Andric Diags->Report(diag::err_fe_expected_compiler_job) << OS.str(); 87*0b57cec5SDimitry Andric return nullptr; 88*0b57cec5SDimitry Andric } 89*0b57cec5SDimitry Andric 90*0b57cec5SDimitry Andric const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin()); 91*0b57cec5SDimitry Andric if (StringRef(Cmd.getCreator().getName()) != "clang") { 92*0b57cec5SDimitry Andric Diags->Report(diag::err_fe_expected_clang_command); 93*0b57cec5SDimitry Andric return nullptr; 94*0b57cec5SDimitry Andric } 95*0b57cec5SDimitry Andric 96*0b57cec5SDimitry Andric const ArgStringList &CCArgs = Cmd.getArguments(); 97*0b57cec5SDimitry Andric auto CI = llvm::make_unique<CompilerInvocation>(); 98*0b57cec5SDimitry Andric if (!CompilerInvocation::CreateFromArgs(*CI, 99*0b57cec5SDimitry Andric const_cast<const char **>(CCArgs.data()), 100*0b57cec5SDimitry Andric const_cast<const char **>(CCArgs.data()) + 101*0b57cec5SDimitry Andric CCArgs.size(), 102*0b57cec5SDimitry Andric *Diags)) 103*0b57cec5SDimitry Andric return nullptr; 104*0b57cec5SDimitry Andric return CI; 105*0b57cec5SDimitry Andric } 106