| //===-- LinuxToolChain.cpp ------------------------------------------------===// |
| // |
| // Copyright 2018 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Gollvm driver helper class LinuxToolChain methods. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LinuxToolChain.h" |
| |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| #include "CompileGo.h" |
| #include "Driver.h" |
| #include "GnuTools.h" |
| #include "Tool.h" |
| #include "ToolChain.h" |
| |
| using namespace gollvm::driver; |
| |
| namespace toolchains { |
| |
| static void addIfPathExists(pathlist &paths, const llvm::Twine &path) |
| { |
| if (llvm::sys::fs::exists(path)) |
| paths.push_back(path.str()); |
| } |
| |
| static llvm::StringRef getOSLibDir(const llvm::Triple &triple) |
| { |
| // multilib is not supported on major aarch64/arm64 linux distributions |
| // subject to change when more scenarios to be taken into account |
| if (triple.getArch() == llvm::Triple::aarch64) |
| return "lib"; |
| // x86 uses the lib32 variant, unlike other archs. |
| if (triple.getArch() == llvm::Triple::x86) |
| return "lib32"; |
| return triple.isArch32Bit() ? "lib" : "lib64"; |
| } |
| |
| Linux::Linux(gollvm::driver::Driver &driver, |
| const llvm::Triple &targetTriple) |
| : ToolChain(driver, targetTriple), |
| inspectFS_(gnutools::gccdetect::InspectRealFS()), |
| gccDetector_(targetTriple, |
| driver.gccToolchainDir(), |
| driver.sysRoot(), |
| inspectFS_) |
| { |
| gccDetector_.init(); |
| |
| // Program paths |
| pathlist &ppaths = programPaths(); |
| auto ftrip = gccDetector_.foundTriple().str(); |
| addIfPathExists(ppaths, llvm::Twine(gccDetector_.getParentLibPath() + |
| "/../../" + ftrip + |
| "/bin").str()); |
| |
| // File paths |
| pathlist &fpaths = filePaths(); |
| addIfPathExists(fpaths, gccDetector_.getLibPath()); |
| std::string osLibDir = getOSLibDir(targetTriple); |
| if (!driver.sysRoot().empty()) |
| osLibDir = driver.sysRoot() + "/" + osLibDir; |
| addIfPathExists(fpaths, llvm::Twine(gccDetector_.getParentLibPath() + |
| "/../" + ftrip).str()); |
| addIfPathExists(fpaths, llvm::Twine(osLibDir).str()); |
| addIfPathExists(fpaths, llvm::Twine(osLibDir + "/" + ftrip).str()); |
| |
| // Include program and file paths in verbose output. |
| if (driver.args().hasArg(gollvm::options::OPT_v)) { |
| llvm::errs() << "Candidate GCC install:\n" << gccDetector_.toString(); |
| |
| llvm::errs() << "ProgramPaths:\n"; |
| for (auto &path : programPaths()) |
| llvm::errs() << path << "\n"; |
| llvm::errs() << "FilePaths:\n"; |
| for (auto &path : filePaths()) |
| llvm::errs() << path << "\n"; |
| } |
| } |
| |
| Linux::~Linux() |
| { |
| } |
| |
| Tool *Linux::buildCompiler() |
| { |
| return new CompileGo(*this, driver().executablePath()); |
| } |
| |
| Tool *Linux::buildAssembler() |
| { |
| return new gnutools::Assembler(*this); |
| } |
| |
| Tool *Linux::buildLinker() |
| { |
| return new gnutools::Linker(*this); |
| } |
| |
| std::string Linux::getDynamicLinker(const llvm::opt::ArgList &args) |
| { |
| const llvm::Triple::ArchType arch = triple().getArch(); |
| |
| std::string LibDir; |
| std::string Loader; |
| |
| switch (arch) { |
| default: |
| assert(false && "unsupported architecture"); |
| return "<unknown_dynamic_linker>"; |
| case llvm::Triple::aarch64: |
| LibDir = "lib"; |
| Loader = "ld-linux-aarch64.so.1"; |
| break; |
| case llvm::Triple::x86: |
| LibDir = "lib"; |
| Loader = "ld-linux.so.2"; |
| break; |
| case llvm::Triple::x86_64: { |
| LibDir = "lib64"; |
| Loader = "ld-linux-x86-64.so.2"; |
| break; |
| } |
| } |
| return "/" + LibDir + "/" + Loader; |
| } |
| |
| } // end namespace toolchains |