927 lines
33 KiB
C++
927 lines
33 KiB
C++
//===--- Linux.h - Linux ToolChain Implementations --------------*- C++ -*-===//
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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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#include "Linux.h"
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#include "Arch/ARM.h"
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#include "Arch/Mips.h"
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#include "Arch/PPC.h"
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#include "Arch/RISCV.h"
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#include "CommonArgs.h"
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#include "clang/Config/config.h"
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#include "clang/Driver/Distro.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/Options.h"
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#include "clang/Driver/SanitizerArgs.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/ScopedPrinter.h"
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#include "llvm/Support/VirtualFileSystem.h"
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#include <system_error>
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang;
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using namespace llvm::opt;
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using tools::addPathIfExists;
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/// Get our best guess at the multiarch triple for a target.
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///
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/// Debian-based systems are starting to use a multiarch setup where they use
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/// a target-triple directory in the library and header search paths.
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/// Unfortunately, this triple does not align with the vanilla target triple,
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/// so we provide a rough mapping here.
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std::string Linux::getMultiarchTriple(const Driver &D,
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const llvm::Triple &TargetTriple,
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StringRef SysRoot) const {
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llvm::Triple::EnvironmentType TargetEnvironment =
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TargetTriple.getEnvironment();
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bool IsAndroid = TargetTriple.isAndroid();
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bool IsMipsR6 = TargetTriple.getSubArch() == llvm::Triple::MipsSubArch_r6;
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bool IsMipsN32Abi = TargetTriple.getEnvironment() == llvm::Triple::GNUABIN32;
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// For most architectures, just use whatever we have rather than trying to be
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// clever.
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switch (TargetTriple.getArch()) {
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default:
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break;
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// We use the existence of '/lib/<triple>' as a directory to detect some
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// common linux triples that don't quite match the Clang triple for both
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// 32-bit and 64-bit targets. Multiarch fixes its install triples to these
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// regardless of what the actual target triple is.
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case llvm::Triple::arm:
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case llvm::Triple::thumb:
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if (IsAndroid) {
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return "arm-linux-androideabi";
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} else if (TargetEnvironment == llvm::Triple::GNUEABIHF) {
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if (D.getVFS().exists(SysRoot + "/lib/arm-linux-gnueabihf"))
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return "arm-linux-gnueabihf";
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} else {
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if (D.getVFS().exists(SysRoot + "/lib/arm-linux-gnueabi"))
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return "arm-linux-gnueabi";
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}
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break;
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case llvm::Triple::armeb:
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case llvm::Triple::thumbeb:
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if (TargetEnvironment == llvm::Triple::GNUEABIHF) {
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if (D.getVFS().exists(SysRoot + "/lib/armeb-linux-gnueabihf"))
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return "armeb-linux-gnueabihf";
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} else {
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if (D.getVFS().exists(SysRoot + "/lib/armeb-linux-gnueabi"))
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return "armeb-linux-gnueabi";
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}
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break;
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case llvm::Triple::x86:
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if (IsAndroid)
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return "i686-linux-android";
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if (D.getVFS().exists(SysRoot + "/lib/i386-linux-gnu"))
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return "i386-linux-gnu";
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break;
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case llvm::Triple::x86_64:
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if (IsAndroid)
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return "x86_64-linux-android";
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// We don't want this for x32, otherwise it will match x86_64 libs
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if (TargetEnvironment != llvm::Triple::GNUX32 &&
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D.getVFS().exists(SysRoot + "/lib/x86_64-linux-gnu"))
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return "x86_64-linux-gnu";
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break;
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case llvm::Triple::aarch64:
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if (IsAndroid)
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return "aarch64-linux-android";
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if (D.getVFS().exists(SysRoot + "/lib/aarch64-linux-gnu"))
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return "aarch64-linux-gnu";
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break;
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case llvm::Triple::aarch64_be:
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if (D.getVFS().exists(SysRoot + "/lib/aarch64_be-linux-gnu"))
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return "aarch64_be-linux-gnu";
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break;
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case llvm::Triple::mips: {
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std::string MT = IsMipsR6 ? "mipsisa32r6-linux-gnu" : "mips-linux-gnu";
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if (D.getVFS().exists(SysRoot + "/lib/" + MT))
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return MT;
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break;
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}
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case llvm::Triple::mipsel: {
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if (IsAndroid)
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return "mipsel-linux-android";
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std::string MT = IsMipsR6 ? "mipsisa32r6el-linux-gnu" : "mipsel-linux-gnu";
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if (D.getVFS().exists(SysRoot + "/lib/" + MT))
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return MT;
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break;
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}
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case llvm::Triple::mips64: {
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std::string MT = std::string(IsMipsR6 ? "mipsisa64r6" : "mips64") +
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"-linux-" + (IsMipsN32Abi ? "gnuabin32" : "gnuabi64");
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if (D.getVFS().exists(SysRoot + "/lib/" + MT))
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return MT;
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if (D.getVFS().exists(SysRoot + "/lib/mips64-linux-gnu"))
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return "mips64-linux-gnu";
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break;
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}
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case llvm::Triple::mips64el: {
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if (IsAndroid)
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return "mips64el-linux-android";
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std::string MT = std::string(IsMipsR6 ? "mipsisa64r6el" : "mips64el") +
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"-linux-" + (IsMipsN32Abi ? "gnuabin32" : "gnuabi64");
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if (D.getVFS().exists(SysRoot + "/lib/" + MT))
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return MT;
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if (D.getVFS().exists(SysRoot + "/lib/mips64el-linux-gnu"))
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return "mips64el-linux-gnu";
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break;
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}
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case llvm::Triple::ppc:
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if (D.getVFS().exists(SysRoot + "/lib/powerpc-linux-gnuspe"))
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return "powerpc-linux-gnuspe";
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if (D.getVFS().exists(SysRoot + "/lib/powerpc-linux-gnu"))
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return "powerpc-linux-gnu";
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break;
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case llvm::Triple::ppcle:
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if (D.getVFS().exists(SysRoot + "/lib/powerpcle-linux-gnu"))
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return "powerpcle-linux-gnu";
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break;
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case llvm::Triple::ppc64:
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if (D.getVFS().exists(SysRoot + "/lib/powerpc64-linux-gnu"))
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return "powerpc64-linux-gnu";
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break;
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case llvm::Triple::ppc64le:
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if (D.getVFS().exists(SysRoot + "/lib/powerpc64le-linux-gnu"))
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return "powerpc64le-linux-gnu";
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break;
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case llvm::Triple::sparc:
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if (D.getVFS().exists(SysRoot + "/lib/sparc-linux-gnu"))
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return "sparc-linux-gnu";
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break;
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case llvm::Triple::sparcv9:
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if (D.getVFS().exists(SysRoot + "/lib/sparc64-linux-gnu"))
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return "sparc64-linux-gnu";
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break;
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case llvm::Triple::systemz:
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if (D.getVFS().exists(SysRoot + "/lib/s390x-linux-gnu"))
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return "s390x-linux-gnu";
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break;
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}
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return TargetTriple.str();
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}
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static StringRef getOSLibDir(const llvm::Triple &Triple, const ArgList &Args) {
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if (Triple.isMIPS()) {
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if (Triple.isAndroid()) {
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StringRef CPUName;
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StringRef ABIName;
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tools::mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
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if (CPUName == "mips32r6")
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return "libr6";
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if (CPUName == "mips32r2")
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return "libr2";
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}
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// lib32 directory has a special meaning on MIPS targets.
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// It contains N32 ABI binaries. Use this folder if produce
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// code for N32 ABI only.
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if (tools::mips::hasMipsAbiArg(Args, "n32"))
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return "lib32";
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return Triple.isArch32Bit() ? "lib" : "lib64";
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}
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// It happens that only x86, PPC and SPARC use the 'lib32' variant of
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// oslibdir, and using that variant while targeting other architectures causes
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// problems because the libraries are laid out in shared system roots that
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// can't cope with a 'lib32' library search path being considered. So we only
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// enable them when we know we may need it.
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//
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// FIXME: This is a bit of a hack. We should really unify this code for
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// reasoning about oslibdir spellings with the lib dir spellings in the
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// GCCInstallationDetector, but that is a more significant refactoring.
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if (Triple.getArch() == llvm::Triple::x86 || Triple.isPPC32() ||
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Triple.getArch() == llvm::Triple::sparc)
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return "lib32";
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if (Triple.getArch() == llvm::Triple::x86_64 &&
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Triple.getEnvironment() == llvm::Triple::GNUX32)
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return "libx32";
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if (Triple.getArch() == llvm::Triple::riscv32)
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return "lib32";
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return Triple.isArch32Bit() ? "lib" : "lib64";
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}
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Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
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: Generic_ELF(D, Triple, Args) {
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GCCInstallation.init(Triple, Args);
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Multilibs = GCCInstallation.getMultilibs();
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SelectedMultilib = GCCInstallation.getMultilib();
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llvm::Triple::ArchType Arch = Triple.getArch();
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std::string SysRoot = computeSysRoot();
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ToolChain::path_list &PPaths = getProgramPaths();
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Generic_GCC::PushPPaths(PPaths);
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Distro Distro(D.getVFS(), Triple);
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if (Distro.IsAlpineLinux() || Triple.isAndroid()) {
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ExtraOpts.push_back("-z");
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ExtraOpts.push_back("now");
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}
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if (Distro.IsOpenSUSE() || Distro.IsUbuntu() || Distro.IsAlpineLinux() ||
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Triple.isAndroid()) {
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ExtraOpts.push_back("-z");
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ExtraOpts.push_back("relro");
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}
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// Android ARM/AArch64 use max-page-size=4096 to reduce VMA usage. Note, lld
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// from 11 onwards default max-page-size to 65536 for both ARM and AArch64.
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if ((Triple.isARM() || Triple.isAArch64()) && Triple.isAndroid()) {
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ExtraOpts.push_back("-z");
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ExtraOpts.push_back("max-page-size=4096");
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}
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if (GCCInstallation.getParentLibPath().find("opt/rh/devtoolset") !=
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StringRef::npos)
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// With devtoolset on RHEL, we want to add a bin directory that is relative
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// to the detected gcc install, because if we are using devtoolset gcc then
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// we want to use other tools from devtoolset (e.g. ld) instead of the
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// standard system tools.
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PPaths.push_back(Twine(GCCInstallation.getParentLibPath() +
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"/../bin").str());
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if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)
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ExtraOpts.push_back("-X");
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const bool IsAndroid = Triple.isAndroid();
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const bool IsMips = Triple.isMIPS();
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const bool IsHexagon = Arch == llvm::Triple::hexagon;
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const bool IsRISCV = Triple.isRISCV();
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if (IsMips && !SysRoot.empty())
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ExtraOpts.push_back("--sysroot=" + SysRoot);
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// Do not use 'gnu' hash style for Mips targets because .gnu.hash
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// and the MIPS ABI require .dynsym to be sorted in different ways.
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// .gnu.hash needs symbols to be grouped by hash code whereas the MIPS
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// ABI requires a mapping between the GOT and the symbol table.
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// Android loader does not support .gnu.hash until API 23.
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// Hexagon linker/loader does not support .gnu.hash
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if (!IsMips && !IsHexagon) {
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if (Distro.IsRedhat() || Distro.IsOpenSUSE() || Distro.IsAlpineLinux() ||
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(Distro.IsUbuntu() && Distro >= Distro::UbuntuMaverick) ||
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(IsAndroid && !Triple.isAndroidVersionLT(23)))
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ExtraOpts.push_back("--hash-style=gnu");
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if (Distro.IsDebian() || Distro.IsOpenSUSE() ||
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Distro == Distro::UbuntuLucid || Distro == Distro::UbuntuJaunty ||
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Distro == Distro::UbuntuKarmic ||
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(IsAndroid && Triple.isAndroidVersionLT(23)))
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ExtraOpts.push_back("--hash-style=both");
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}
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#ifdef ENABLE_LINKER_BUILD_ID
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ExtraOpts.push_back("--build-id");
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#endif
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if (IsAndroid || Distro.IsOpenSUSE())
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ExtraOpts.push_back("--enable-new-dtags");
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// The selection of paths to try here is designed to match the patterns which
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// the GCC driver itself uses, as this is part of the GCC-compatible driver.
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// This was determined by running GCC in a fake filesystem, creating all
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// possible permutations of these directories, and seeing which ones it added
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// to the link paths.
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path_list &Paths = getFilePaths();
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const std::string OSLibDir = std::string(getOSLibDir(Triple, Args));
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const std::string MultiarchTriple = getMultiarchTriple(D, Triple, SysRoot);
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Generic_GCC::AddMultilibPaths(D, SysRoot, OSLibDir, MultiarchTriple, Paths);
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// Similar to the logic for GCC above, if we currently running Clang inside
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// of the requested system root, add its parent library paths to
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// those searched.
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// FIXME: It's not clear whether we should use the driver's installed
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// directory ('Dir' below) or the ResourceDir.
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if (StringRef(D.Dir).startswith(SysRoot)) {
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addPathIfExists(D, D.Dir + "/../lib/" + MultiarchTriple, Paths);
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addPathIfExists(D, D.Dir + "/../" + OSLibDir, Paths);
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}
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addPathIfExists(D, SysRoot + "/lib/" + MultiarchTriple, Paths);
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addPathIfExists(D, SysRoot + "/lib/../" + OSLibDir, Paths);
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if (IsAndroid) {
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// Android sysroots contain a library directory for each supported OS
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// version as well as some unversioned libraries in the usual multiarch
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// directory.
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unsigned Major;
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unsigned Minor;
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unsigned Micro;
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Triple.getEnvironmentVersion(Major, Minor, Micro);
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addPathIfExists(D,
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SysRoot + "/usr/lib/" + MultiarchTriple + "/" +
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llvm::to_string(Major),
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Paths);
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}
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addPathIfExists(D, SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
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// 64-bit OpenEmbedded sysroots may not have a /usr/lib dir. So they cannot
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// find /usr/lib64 as it is referenced as /usr/lib/../lib64. So we handle
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// this here.
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if (Triple.getVendor() == llvm::Triple::OpenEmbedded &&
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Triple.isArch64Bit())
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addPathIfExists(D, SysRoot + "/usr/" + OSLibDir, Paths);
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else
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addPathIfExists(D, SysRoot + "/usr/lib/../" + OSLibDir, Paths);
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if (IsRISCV) {
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StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple);
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addPathIfExists(D, SysRoot + "/" + OSLibDir + "/" + ABIName, Paths);
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addPathIfExists(D, SysRoot + "/usr/" + OSLibDir + "/" + ABIName, Paths);
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}
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Generic_GCC::AddMultiarchPaths(D, SysRoot, OSLibDir, Paths);
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// Similar to the logic for GCC above, if we are currently running Clang
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// inside of the requested system root, add its parent library path to those
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// searched.
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// FIXME: It's not clear whether we should use the driver's installed
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// directory ('Dir' below) or the ResourceDir.
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if (StringRef(D.Dir).startswith(SysRoot))
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addPathIfExists(D, D.Dir + "/../lib", Paths);
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addPathIfExists(D, SysRoot + "/lib", Paths);
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addPathIfExists(D, SysRoot + "/usr/lib", Paths);
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}
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ToolChain::CXXStdlibType Linux::GetDefaultCXXStdlibType() const {
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if (getTriple().isAndroid())
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return ToolChain::CST_Libcxx;
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return ToolChain::CST_Libstdcxx;
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}
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bool Linux::HasNativeLLVMSupport() const { return true; }
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Tool *Linux::buildLinker() const { return new tools::gnutools::Linker(*this); }
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Tool *Linux::buildStaticLibTool() const {
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return new tools::gnutools::StaticLibTool(*this);
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}
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Tool *Linux::buildAssembler() const {
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return new tools::gnutools::Assembler(*this);
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}
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std::string Linux::computeSysRoot() const {
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if (!getDriver().SysRoot.empty())
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return getDriver().SysRoot;
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if (getTriple().isAndroid()) {
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// Android toolchains typically include a sysroot at ../sysroot relative to
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// the clang binary.
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const StringRef ClangDir = getDriver().getInstalledDir();
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std::string AndroidSysRootPath = (ClangDir + "/../sysroot").str();
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if (getVFS().exists(AndroidSysRootPath))
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return AndroidSysRootPath;
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}
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if (!GCCInstallation.isValid() || !getTriple().isMIPS())
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return std::string();
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// Standalone MIPS toolchains use different names for sysroot folder
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// and put it into different places. Here we try to check some known
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// variants.
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const StringRef InstallDir = GCCInstallation.getInstallPath();
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const StringRef TripleStr = GCCInstallation.getTriple().str();
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const Multilib &Multilib = GCCInstallation.getMultilib();
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std::string Path =
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(InstallDir + "/../../../../" + TripleStr + "/libc" + Multilib.osSuffix())
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.str();
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if (getVFS().exists(Path))
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return Path;
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Path = (InstallDir + "/../../../../sysroot" + Multilib.osSuffix()).str();
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if (getVFS().exists(Path))
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return Path;
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return std::string();
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}
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std::string Linux::getDynamicLinker(const ArgList &Args) const {
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const llvm::Triple::ArchType Arch = getArch();
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const llvm::Triple &Triple = getTriple();
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const Distro Distro(getDriver().getVFS(), Triple);
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if (Triple.isAndroid())
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return Triple.isArch64Bit() ? "/system/bin/linker64" : "/system/bin/linker";
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if (Triple.isMusl()) {
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std::string ArchName;
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bool IsArm = false;
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switch (Arch) {
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case llvm::Triple::arm:
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case llvm::Triple::thumb:
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ArchName = "arm";
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IsArm = true;
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break;
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case llvm::Triple::armeb:
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case llvm::Triple::thumbeb:
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ArchName = "armeb";
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IsArm = true;
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break;
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default:
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ArchName = Triple.getArchName().str();
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}
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|
if (IsArm &&
|
|
(Triple.getEnvironment() == llvm::Triple::MuslEABIHF ||
|
|
tools::arm::getARMFloatABI(*this, Args) == tools::arm::FloatABI::Hard))
|
|
ArchName += "hf";
|
|
|
|
return "/lib/ld-musl-" + ArchName + ".so.1";
|
|
}
|
|
|
|
std::string LibDir;
|
|
std::string Loader;
|
|
|
|
switch (Arch) {
|
|
default:
|
|
llvm_unreachable("unsupported architecture");
|
|
|
|
case llvm::Triple::aarch64:
|
|
LibDir = "lib";
|
|
Loader = "ld-linux-aarch64.so.1";
|
|
break;
|
|
case llvm::Triple::aarch64_be:
|
|
LibDir = "lib";
|
|
Loader = "ld-linux-aarch64_be.so.1";
|
|
break;
|
|
case llvm::Triple::arm:
|
|
case llvm::Triple::thumb:
|
|
case llvm::Triple::armeb:
|
|
case llvm::Triple::thumbeb: {
|
|
const bool HF =
|
|
Triple.getEnvironment() == llvm::Triple::GNUEABIHF ||
|
|
tools::arm::getARMFloatABI(*this, Args) == tools::arm::FloatABI::Hard;
|
|
|
|
LibDir = "lib";
|
|
Loader = HF ? "ld-linux-armhf.so.3" : "ld-linux.so.3";
|
|
break;
|
|
}
|
|
case llvm::Triple::mips:
|
|
case llvm::Triple::mipsel:
|
|
case llvm::Triple::mips64:
|
|
case llvm::Triple::mips64el: {
|
|
bool IsNaN2008 = tools::mips::isNaN2008(Args, Triple);
|
|
|
|
LibDir = "lib" + tools::mips::getMipsABILibSuffix(Args, Triple);
|
|
|
|
if (tools::mips::isUCLibc(Args))
|
|
Loader = IsNaN2008 ? "ld-uClibc-mipsn8.so.0" : "ld-uClibc.so.0";
|
|
else if (!Triple.hasEnvironment() &&
|
|
Triple.getVendor() == llvm::Triple::VendorType::MipsTechnologies)
|
|
Loader =
|
|
Triple.isLittleEndian() ? "ld-musl-mipsel.so.1" : "ld-musl-mips.so.1";
|
|
else
|
|
Loader = IsNaN2008 ? "ld-linux-mipsn8.so.1" : "ld.so.1";
|
|
|
|
break;
|
|
}
|
|
case llvm::Triple::ppc:
|
|
LibDir = "lib";
|
|
Loader = "ld.so.1";
|
|
break;
|
|
case llvm::Triple::ppcle:
|
|
LibDir = "lib";
|
|
Loader = "ld.so.1";
|
|
break;
|
|
case llvm::Triple::ppc64:
|
|
LibDir = "lib64";
|
|
Loader =
|
|
(tools::ppc::hasPPCAbiArg(Args, "elfv2")) ? "ld64.so.2" : "ld64.so.1";
|
|
break;
|
|
case llvm::Triple::ppc64le:
|
|
LibDir = "lib64";
|
|
Loader =
|
|
(tools::ppc::hasPPCAbiArg(Args, "elfv1")) ? "ld64.so.1" : "ld64.so.2";
|
|
break;
|
|
case llvm::Triple::riscv32: {
|
|
StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple);
|
|
LibDir = "lib";
|
|
Loader = ("ld-linux-riscv32-" + ABIName + ".so.1").str();
|
|
break;
|
|
}
|
|
case llvm::Triple::riscv64: {
|
|
StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple);
|
|
LibDir = "lib";
|
|
Loader = ("ld-linux-riscv64-" + ABIName + ".so.1").str();
|
|
break;
|
|
}
|
|
case llvm::Triple::sparc:
|
|
case llvm::Triple::sparcel:
|
|
LibDir = "lib";
|
|
Loader = "ld-linux.so.2";
|
|
break;
|
|
case llvm::Triple::sparcv9:
|
|
LibDir = "lib64";
|
|
Loader = "ld-linux.so.2";
|
|
break;
|
|
case llvm::Triple::systemz:
|
|
LibDir = "lib";
|
|
Loader = "ld64.so.1";
|
|
break;
|
|
case llvm::Triple::x86:
|
|
LibDir = "lib";
|
|
Loader = "ld-linux.so.2";
|
|
break;
|
|
case llvm::Triple::x86_64: {
|
|
bool X32 = Triple.getEnvironment() == llvm::Triple::GNUX32;
|
|
|
|
LibDir = X32 ? "libx32" : "lib64";
|
|
Loader = X32 ? "ld-linux-x32.so.2" : "ld-linux-x86-64.so.2";
|
|
break;
|
|
}
|
|
case llvm::Triple::ve:
|
|
return "/opt/nec/ve/lib/ld-linux-ve.so.1";
|
|
}
|
|
|
|
if (Distro == Distro::Exherbo &&
|
|
(Triple.getVendor() == llvm::Triple::UnknownVendor ||
|
|
Triple.getVendor() == llvm::Triple::PC))
|
|
return "/usr/" + Triple.str() + "/lib/" + Loader;
|
|
return "/" + LibDir + "/" + Loader;
|
|
}
|
|
|
|
void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
const Driver &D = getDriver();
|
|
std::string SysRoot = computeSysRoot();
|
|
|
|
if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
|
|
return;
|
|
|
|
if (!DriverArgs.hasArg(options::OPT_nostdlibinc))
|
|
addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");
|
|
|
|
SmallString<128> ResourceDirInclude(D.ResourceDir);
|
|
llvm::sys::path::append(ResourceDirInclude, "include");
|
|
if (!DriverArgs.hasArg(options::OPT_nobuiltininc) &&
|
|
(!getTriple().isMusl() || DriverArgs.hasArg(options::OPT_nostdlibinc)))
|
|
addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude);
|
|
|
|
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
|
|
return;
|
|
|
|
// Check for configure-time C include directories.
|
|
StringRef CIncludeDirs(C_INCLUDE_DIRS);
|
|
if (CIncludeDirs != "") {
|
|
SmallVector<StringRef, 5> dirs;
|
|
CIncludeDirs.split(dirs, ":");
|
|
for (StringRef dir : dirs) {
|
|
StringRef Prefix =
|
|
llvm::sys::path::is_absolute(dir) ? "" : StringRef(SysRoot);
|
|
addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Lacking those, try to detect the correct set of system includes for the
|
|
// target triple.
|
|
|
|
AddMultilibIncludeArgs(DriverArgs, CC1Args);
|
|
|
|
// Implement generic Debian multiarch support.
|
|
const StringRef X86_64MultiarchIncludeDirs[] = {
|
|
"/usr/include/x86_64-linux-gnu",
|
|
|
|
// FIXME: These are older forms of multiarch. It's not clear that they're
|
|
// in use in any released version of Debian, so we should consider
|
|
// removing them.
|
|
"/usr/include/i686-linux-gnu/64", "/usr/include/i486-linux-gnu/64"};
|
|
const StringRef X86MultiarchIncludeDirs[] = {
|
|
"/usr/include/i386-linux-gnu",
|
|
|
|
// FIXME: These are older forms of multiarch. It's not clear that they're
|
|
// in use in any released version of Debian, so we should consider
|
|
// removing them.
|
|
"/usr/include/x86_64-linux-gnu/32", "/usr/include/i686-linux-gnu",
|
|
"/usr/include/i486-linux-gnu"};
|
|
const StringRef AArch64MultiarchIncludeDirs[] = {
|
|
"/usr/include/aarch64-linux-gnu"};
|
|
const StringRef ARMMultiarchIncludeDirs[] = {
|
|
"/usr/include/arm-linux-gnueabi"};
|
|
const StringRef ARMHFMultiarchIncludeDirs[] = {
|
|
"/usr/include/arm-linux-gnueabihf"};
|
|
const StringRef ARMEBMultiarchIncludeDirs[] = {
|
|
"/usr/include/armeb-linux-gnueabi"};
|
|
const StringRef ARMEBHFMultiarchIncludeDirs[] = {
|
|
"/usr/include/armeb-linux-gnueabihf"};
|
|
const StringRef MIPSMultiarchIncludeDirs[] = {"/usr/include/mips-linux-gnu"};
|
|
const StringRef MIPSELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsel-linux-gnu"};
|
|
const StringRef MIPS64MultiarchIncludeDirs[] = {
|
|
"/usr/include/mips64-linux-gnuabi64"};
|
|
const StringRef MIPS64ELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mips64el-linux-gnuabi64"};
|
|
const StringRef MIPSN32MultiarchIncludeDirs[] = {
|
|
"/usr/include/mips64-linux-gnuabin32"};
|
|
const StringRef MIPSN32ELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mips64el-linux-gnuabin32"};
|
|
const StringRef MIPSR6MultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa32-linux-gnu"};
|
|
const StringRef MIPSR6ELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa32r6el-linux-gnu"};
|
|
const StringRef MIPS64R6MultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa64r6-linux-gnuabi64"};
|
|
const StringRef MIPS64R6ELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa64r6el-linux-gnuabi64"};
|
|
const StringRef MIPSN32R6MultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa64r6-linux-gnuabin32"};
|
|
const StringRef MIPSN32R6ELMultiarchIncludeDirs[] = {
|
|
"/usr/include/mipsisa64r6el-linux-gnuabin32"};
|
|
const StringRef PPCMultiarchIncludeDirs[] = {
|
|
"/usr/include/powerpc-linux-gnu",
|
|
"/usr/include/powerpc-linux-gnuspe"};
|
|
const StringRef PPCLEMultiarchIncludeDirs[] = {
|
|
"/usr/include/powerpcle-linux-gnu"};
|
|
const StringRef PPC64MultiarchIncludeDirs[] = {
|
|
"/usr/include/powerpc64-linux-gnu"};
|
|
const StringRef PPC64LEMultiarchIncludeDirs[] = {
|
|
"/usr/include/powerpc64le-linux-gnu"};
|
|
const StringRef SparcMultiarchIncludeDirs[] = {
|
|
"/usr/include/sparc-linux-gnu"};
|
|
const StringRef Sparc64MultiarchIncludeDirs[] = {
|
|
"/usr/include/sparc64-linux-gnu"};
|
|
const StringRef SYSTEMZMultiarchIncludeDirs[] = {
|
|
"/usr/include/s390x-linux-gnu"};
|
|
ArrayRef<StringRef> MultiarchIncludeDirs;
|
|
switch (getTriple().getArch()) {
|
|
case llvm::Triple::x86_64:
|
|
MultiarchIncludeDirs = X86_64MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::x86:
|
|
MultiarchIncludeDirs = X86MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::aarch64:
|
|
case llvm::Triple::aarch64_be:
|
|
MultiarchIncludeDirs = AArch64MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::arm:
|
|
case llvm::Triple::thumb:
|
|
if (getTriple().getEnvironment() == llvm::Triple::GNUEABIHF)
|
|
MultiarchIncludeDirs = ARMHFMultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = ARMMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::armeb:
|
|
case llvm::Triple::thumbeb:
|
|
if (getTriple().getEnvironment() == llvm::Triple::GNUEABIHF)
|
|
MultiarchIncludeDirs = ARMEBHFMultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = ARMEBMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::mips:
|
|
if (getTriple().getSubArch() == llvm::Triple::MipsSubArch_r6)
|
|
MultiarchIncludeDirs = MIPSR6MultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPSMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::mipsel:
|
|
if (getTriple().getSubArch() == llvm::Triple::MipsSubArch_r6)
|
|
MultiarchIncludeDirs = MIPSR6ELMultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::mips64:
|
|
if (getTriple().getSubArch() == llvm::Triple::MipsSubArch_r6)
|
|
if (getTriple().getEnvironment() == llvm::Triple::GNUABIN32)
|
|
MultiarchIncludeDirs = MIPSN32R6MultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPS64R6MultiarchIncludeDirs;
|
|
else if (getTriple().getEnvironment() == llvm::Triple::GNUABIN32)
|
|
MultiarchIncludeDirs = MIPSN32MultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPS64MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::mips64el:
|
|
if (getTriple().getSubArch() == llvm::Triple::MipsSubArch_r6)
|
|
if (getTriple().getEnvironment() == llvm::Triple::GNUABIN32)
|
|
MultiarchIncludeDirs = MIPSN32R6ELMultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPS64R6ELMultiarchIncludeDirs;
|
|
else if (getTriple().getEnvironment() == llvm::Triple::GNUABIN32)
|
|
MultiarchIncludeDirs = MIPSN32ELMultiarchIncludeDirs;
|
|
else
|
|
MultiarchIncludeDirs = MIPS64ELMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::ppc:
|
|
MultiarchIncludeDirs = PPCMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::ppcle:
|
|
MultiarchIncludeDirs = PPCLEMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::ppc64:
|
|
MultiarchIncludeDirs = PPC64MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::ppc64le:
|
|
MultiarchIncludeDirs = PPC64LEMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::sparc:
|
|
MultiarchIncludeDirs = SparcMultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::sparcv9:
|
|
MultiarchIncludeDirs = Sparc64MultiarchIncludeDirs;
|
|
break;
|
|
case llvm::Triple::systemz:
|
|
MultiarchIncludeDirs = SYSTEMZMultiarchIncludeDirs;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
const std::string AndroidMultiarchIncludeDir =
|
|
std::string("/usr/include/") +
|
|
getMultiarchTriple(D, getTriple(), SysRoot);
|
|
const StringRef AndroidMultiarchIncludeDirs[] = {AndroidMultiarchIncludeDir};
|
|
if (getTriple().isAndroid())
|
|
MultiarchIncludeDirs = AndroidMultiarchIncludeDirs;
|
|
|
|
for (StringRef Dir : MultiarchIncludeDirs) {
|
|
if (D.getVFS().exists(SysRoot + Dir)) {
|
|
addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + Dir);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (getTriple().getOS() == llvm::Triple::RTEMS)
|
|
return;
|
|
|
|
// Add an include of '/include' directly. This isn't provided by default by
|
|
// system GCCs, but is often used with cross-compiling GCCs, and harmless to
|
|
// add even when Clang is acting as-if it were a system compiler.
|
|
addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/include");
|
|
|
|
addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include");
|
|
|
|
if (!DriverArgs.hasArg(options::OPT_nobuiltininc) && getTriple().isMusl())
|
|
addSystemInclude(DriverArgs, CC1Args, ResourceDirInclude);
|
|
}
|
|
|
|
void Linux::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
|
|
llvm::opt::ArgStringList &CC1Args) const {
|
|
// Try generic GCC detection first.
|
|
if (Generic_GCC::addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args))
|
|
return;
|
|
|
|
// We need a detected GCC installation on Linux to provide libstdc++'s
|
|
// headers in odd Linuxish places.
|
|
if (!GCCInstallation.isValid())
|
|
return;
|
|
|
|
StringRef LibDir = GCCInstallation.getParentLibPath();
|
|
StringRef TripleStr = GCCInstallation.getTriple().str();
|
|
const Multilib &Multilib = GCCInstallation.getMultilib();
|
|
const GCCVersion &Version = GCCInstallation.getVersion();
|
|
|
|
const std::string LibStdCXXIncludePathCandidates[] = {
|
|
// Android standalone toolchain has C++ headers in yet another place.
|
|
LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
|
|
// Freescale SDK C++ headers are directly in <sysroot>/usr/include/c++,
|
|
// without a subdirectory corresponding to the gcc version.
|
|
LibDir.str() + "/../include/c++",
|
|
// Cray's gcc installation puts headers under "g++" without a
|
|
// version suffix.
|
|
LibDir.str() + "/../include/g++",
|
|
};
|
|
|
|
for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
|
|
if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
|
|
/*GCCMultiarchTriple*/ "",
|
|
/*TargetMultiarchTriple*/ "",
|
|
Multilib.includeSuffix(), DriverArgs, CC1Args))
|
|
break;
|
|
}
|
|
}
|
|
|
|
void Linux::AddCudaIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
|
|
}
|
|
|
|
void Linux::AddHIPIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
RocmInstallation.AddHIPIncludeArgs(DriverArgs, CC1Args);
|
|
}
|
|
|
|
void Linux::AddIAMCUIncludeArgs(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args) const {
|
|
if (GCCInstallation.isValid()) {
|
|
CC1Args.push_back("-isystem");
|
|
CC1Args.push_back(DriverArgs.MakeArgString(
|
|
GCCInstallation.getParentLibPath() + "/../" +
|
|
GCCInstallation.getTriple().str() + "/include"));
|
|
}
|
|
}
|
|
|
|
bool Linux::isPIEDefault() const {
|
|
return (getTriple().isAndroid() && !getTriple().isAndroidVersionLT(16)) ||
|
|
getTriple().isMusl() || getSanitizerArgs().requiresPIE();
|
|
}
|
|
|
|
bool Linux::isNoExecStackDefault() const {
|
|
return getTriple().isAndroid();
|
|
}
|
|
|
|
bool Linux::IsMathErrnoDefault() const {
|
|
if (getTriple().isAndroid())
|
|
return false;
|
|
return Generic_ELF::IsMathErrnoDefault();
|
|
}
|
|
|
|
SanitizerMask Linux::getSupportedSanitizers() const {
|
|
const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
|
|
const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
|
|
const bool IsMIPS = getTriple().isMIPS32();
|
|
const bool IsMIPS64 = getTriple().isMIPS64();
|
|
const bool IsPowerPC64 = getTriple().getArch() == llvm::Triple::ppc64 ||
|
|
getTriple().getArch() == llvm::Triple::ppc64le;
|
|
const bool IsAArch64 = getTriple().getArch() == llvm::Triple::aarch64 ||
|
|
getTriple().getArch() == llvm::Triple::aarch64_be;
|
|
const bool IsArmArch = getTriple().getArch() == llvm::Triple::arm ||
|
|
getTriple().getArch() == llvm::Triple::thumb ||
|
|
getTriple().getArch() == llvm::Triple::armeb ||
|
|
getTriple().getArch() == llvm::Triple::thumbeb;
|
|
const bool IsSystemZ = getTriple().getArch() == llvm::Triple::systemz;
|
|
SanitizerMask Res = ToolChain::getSupportedSanitizers();
|
|
Res |= SanitizerKind::Address;
|
|
Res |= SanitizerKind::PointerCompare;
|
|
Res |= SanitizerKind::PointerSubtract;
|
|
Res |= SanitizerKind::Fuzzer;
|
|
Res |= SanitizerKind::FuzzerNoLink;
|
|
Res |= SanitizerKind::KernelAddress;
|
|
Res |= SanitizerKind::Memory;
|
|
Res |= SanitizerKind::Vptr;
|
|
Res |= SanitizerKind::SafeStack;
|
|
if (IsX86_64 || IsMIPS64 || IsAArch64)
|
|
Res |= SanitizerKind::DataFlow;
|
|
if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsArmArch || IsPowerPC64 ||
|
|
IsSystemZ)
|
|
Res |= SanitizerKind::Leak;
|
|
if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64)
|
|
Res |= SanitizerKind::Thread;
|
|
if (IsX86_64)
|
|
Res |= SanitizerKind::KernelMemory;
|
|
if (IsX86 || IsX86_64)
|
|
Res |= SanitizerKind::Function;
|
|
if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsMIPS || IsArmArch ||
|
|
IsPowerPC64)
|
|
Res |= SanitizerKind::Scudo;
|
|
if (IsX86_64 || IsAArch64) {
|
|
Res |= SanitizerKind::HWAddress;
|
|
Res |= SanitizerKind::KernelHWAddress;
|
|
}
|
|
return Res;
|
|
}
|
|
|
|
void Linux::addProfileRTLibs(const llvm::opt::ArgList &Args,
|
|
llvm::opt::ArgStringList &CmdArgs) const {
|
|
// Add linker option -u__llvm_profile_runtime to cause runtime
|
|
// initialization module to be linked in.
|
|
if (needsProfileRT(Args))
|
|
CmdArgs.push_back(Args.MakeArgString(
|
|
Twine("-u", llvm::getInstrProfRuntimeHookVarName())));
|
|
ToolChain::addProfileRTLibs(Args, CmdArgs);
|
|
}
|
|
|
|
llvm::DenormalMode
|
|
Linux::getDefaultDenormalModeForType(const llvm::opt::ArgList &DriverArgs,
|
|
const JobAction &JA,
|
|
const llvm::fltSemantics *FPType) const {
|
|
switch (getTriple().getArch()) {
|
|
case llvm::Triple::x86:
|
|
case llvm::Triple::x86_64: {
|
|
std::string Unused;
|
|
// DAZ and FTZ are turned on in crtfastmath.o
|
|
if (!DriverArgs.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles) &&
|
|
isFastMathRuntimeAvailable(DriverArgs, Unused))
|
|
return llvm::DenormalMode::getPreserveSign();
|
|
return llvm::DenormalMode::getIEEE();
|
|
}
|
|
default:
|
|
return llvm::DenormalMode::getIEEE();
|
|
}
|
|
}
|
|
|
|
void Linux::addExtraOpts(llvm::opt::ArgStringList &CmdArgs) const {
|
|
for (const auto &Opt : ExtraOpts)
|
|
CmdArgs.push_back(Opt.c_str());
|
|
}
|