| //===---- WindowsToolChains.cpp - Job invocations (Windows-specific) ------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ToolChains.h" |
| |
| #include "swift/Basic/Dwarf.h" |
| #include "swift/Basic/LLVM.h" |
| #include "swift/Basic/Platform.h" |
| #include "swift/Basic/Range.h" |
| #include "swift/Basic/TaskQueue.h" |
| #include "swift/Config.h" |
| #include "swift/Driver/Compilation.h" |
| #include "swift/Driver/Driver.h" |
| #include "swift/Driver/Job.h" |
| #include "swift/Option/Options.h" |
| #include "clang/Basic/Version.h" |
| #include "clang/Driver/Util.h" |
| #include "llvm/ADT/StringSwitch.h" |
| #include "llvm/Option/Arg.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/ProfileData/InstrProf.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/Process.h" |
| #include "llvm/Support/Program.h" |
| |
| using namespace swift; |
| using namespace swift::driver; |
| using namespace llvm::opt; |
| |
| std::string toolchains::Windows::sanitizerRuntimeLibName(StringRef Sanitizer, |
| bool shared) const { |
| return (Twine("clang_rt.") + Sanitizer + "-" + |
| this->getTriple().getArchName() + ".lib") |
| .str(); |
| } |
| |
| ToolChain::InvocationInfo |
| toolchains::Windows::constructInvocation(const DynamicLinkJobAction &job, |
| const JobContext &context) const { |
| assert(context.Output.getPrimaryOutputType() == file_types::TY_Image && |
| "Invalid linker output type."); |
| |
| ArgStringList Arguments; |
| |
| switch (job.getKind()) { |
| case LinkKind::None: |
| llvm_unreachable("invalid link kind"); |
| case LinkKind::Executable: |
| // Default case, nothing extra needed. |
| break; |
| case LinkKind::DynamicLibrary: |
| Arguments.push_back("-shared"); |
| break; |
| case LinkKind::StaticLibrary: |
| llvm_unreachable("invalid link kind"); |
| } |
| |
| // Select the linker to use. |
| std::string Linker; |
| if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) { |
| Linker = A->getValue(); |
| } |
| if (!Linker.empty()) |
| Arguments.push_back(context.Args.MakeArgString("-fuse-ld=" + Linker)); |
| |
| if (context.OI.DebugInfoFormat == IRGenDebugInfoFormat::CodeView) { |
| Arguments.push_back("-Xlinker"); |
| Arguments.push_back("/DEBUG"); |
| } |
| |
| // Configure the toolchain. |
| // |
| // By default use the system `clang` to perform the link. We use `clang` for |
| // the driver here because we do not wish to select a particular C++ runtime. |
| // Furthermore, until C++ interop is enabled, we cannot have a dependency on |
| // C++ code from pure Swift code. If linked libraries are C++ based, they |
| // should properly link C++. In the case of static linking, the user can |
| // explicitly specify the C++ runtime to link against. This is particularly |
| // important for platforms like android where as it is a Linux platform, the |
| // default C++ runtime is `libstdc++` which is unsupported on the target but |
| // as the builds are usually cross-compiled from Linux, libstdc++ is going to |
| // be present. This results in linking the wrong version of libstdc++ |
| // generating invalid binaries. It is also possible to use different C++ |
| // runtimes than the default C++ runtime for the platform (e.g. libc++ on |
| // Windows rather than msvcprt). When C++ interop is enabled, we will need to |
| // surface this via a driver flag. For now, opt for the simpler approach of |
| // just using `clang` and avoid a dependency on the C++ runtime. |
| const char *Clang = "clang"; |
| if (const Arg *A = context.Args.getLastArg(options::OPT_tools_directory)) { |
| StringRef toolchainPath(A->getValue()); |
| |
| // If there is a clang in the toolchain folder, use that instead. |
| if (auto tool = llvm::sys::findProgramByName("clang", {toolchainPath})) |
| Clang = context.Args.MakeArgString(tool.get()); |
| } |
| |
| std::string Target = getTriple().str(); |
| if (!Target.empty()) { |
| Arguments.push_back("-target"); |
| Arguments.push_back(context.Args.MakeArgString(Target)); |
| } |
| |
| // Rely on `-libc` to correctly identify the MSVC Runtime Library. We use |
| // `-nostartfiles` as that limits the difference to just the |
| // `-defaultlib:libcmt` which is passed unconditionally with the `clang++` |
| // driver rather than the `clang-cl` driver. |
| Arguments.push_back("-nostartfiles"); |
| |
| bool wantsStaticStdlib = |
| context.Args.hasFlag(options::OPT_static_stdlib, |
| options::OPT_no_static_stdlib, false); |
| |
| SmallVector<std::string, 4> RuntimeLibPaths; |
| getRuntimeLibraryPaths(RuntimeLibPaths, context.Args, context.OI.SDKPath, |
| /*Shared=*/!wantsStaticStdlib); |
| |
| for (auto path : RuntimeLibPaths) { |
| Arguments.push_back("-L"); |
| // Since Windows has separate libraries per architecture, link against the |
| // architecture specific version of the static library. |
| Arguments.push_back(context.Args.MakeArgString(path + "/" + |
| getTriple().getArchName())); |
| } |
| |
| SmallString<128> SharedResourceDirPath; |
| getResourceDirPath(SharedResourceDirPath, context.Args, /*Shared=*/true); |
| |
| SmallString<128> swiftrtPath = SharedResourceDirPath; |
| llvm::sys::path::append(swiftrtPath, |
| swift::getMajorArchitectureName(getTriple())); |
| llvm::sys::path::append(swiftrtPath, "swiftrt.obj"); |
| Arguments.push_back(context.Args.MakeArgString(swiftrtPath)); |
| |
| addPrimaryInputsOfType(Arguments, context.Inputs, context.Args, |
| file_types::TY_Object); |
| addInputsOfType(Arguments, context.InputActions, file_types::TY_Object); |
| |
| for (const Arg *arg : |
| context.Args.filtered(options::OPT_F, options::OPT_Fsystem)) { |
| if (arg->getOption().matches(options::OPT_Fsystem)) |
| Arguments.push_back("-iframework"); |
| else |
| Arguments.push_back(context.Args.MakeArgString(arg->getSpelling())); |
| Arguments.push_back(arg->getValue()); |
| } |
| |
| if (!context.OI.SDKPath.empty()) { |
| Arguments.push_back("-I"); |
| Arguments.push_back(context.Args.MakeArgString(context.OI.SDKPath)); |
| } |
| |
| if (job.getKind() == LinkKind::Executable) { |
| if (context.OI.SelectedSanitizers & SanitizerKind::Address) |
| addLinkRuntimeLib(context.Args, Arguments, |
| sanitizerRuntimeLibName("asan")); |
| |
| if (context.OI.SelectedSanitizers & SanitizerKind::Undefined) |
| addLinkRuntimeLib(context.Args, Arguments, |
| sanitizerRuntimeLibName("ubsan")); |
| } |
| |
| if (context.Args.hasArg(options::OPT_profile_generate)) { |
| SmallString<128> LibProfile(SharedResourceDirPath); |
| llvm::sys::path::remove_filename(LibProfile); // remove platform name |
| llvm::sys::path::append(LibProfile, "clang", "lib"); |
| |
| llvm::sys::path::append(LibProfile, getTriple().getOSName(), |
| Twine("clang_rt.profile-") + |
| getTriple().getArchName() + ".lib"); |
| Arguments.push_back(context.Args.MakeArgString(LibProfile)); |
| Arguments.push_back(context.Args.MakeArgString( |
| Twine("-u", llvm::getInstrProfRuntimeHookVarName()))); |
| } |
| |
| context.Args.AddAllArgs(Arguments, options::OPT_Xlinker); |
| context.Args.AddAllArgs(Arguments, options::OPT_linker_option_Group); |
| context.Args.AddAllArgValues(Arguments, options::OPT_Xclang_linker); |
| |
| // Run clang++ in verbose mode if "-v" is set |
| if (context.Args.hasArg(options::OPT_v)) { |
| Arguments.push_back("-v"); |
| } |
| |
| // This should be the last option, for convenience in checking output. |
| Arguments.push_back("-o"); |
| Arguments.push_back( |
| context.Args.MakeArgString(context.Output.getPrimaryOutputFilename())); |
| |
| InvocationInfo II{Clang, Arguments}; |
| II.allowsResponseFiles = true; |
| |
| return II; |
| } |
| |
| ToolChain::InvocationInfo |
| toolchains::Windows::constructInvocation(const StaticLinkJobAction &job, |
| const JobContext &context) const { |
| assert(context.Output.getPrimaryOutputType() == file_types::TY_Image && |
| "Invalid linker output type."); |
| |
| ArgStringList Arguments; |
| |
| const char *Linker = "link"; |
| if (const Arg *A = context.Args.getLastArg(options::OPT_use_ld)) |
| Linker = context.Args.MakeArgString(A->getValue()); |
| |
| Arguments.push_back("/lib"); |
| Arguments.push_back("-nologo"); |
| |
| addPrimaryInputsOfType(Arguments, context.Inputs, context.Args, |
| file_types::TY_Object); |
| addInputsOfType(Arguments, context.InputActions, file_types::TY_Object); |
| |
| StringRef OutputFile = context.Output.getPrimaryOutputFilename(); |
| Arguments.push_back(context.Args.MakeArgString(Twine("/OUT:") + OutputFile)); |
| |
| InvocationInfo II{Linker, Arguments}; |
| II.allowsResponseFiles = true; |
| |
| return II; |
| } |