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diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChains.cpp
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+//===--- ToolChains.cpp - ToolChain Implementations -----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ToolChains.h"
+#include "SanitizerArgs.h"
+#include "clang/Basic/ObjCRuntime.h"
+#include "clang/Basic/Version.h"
+#include "clang/Driver/Arg.h"
+#include "clang/Driver/ArgList.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/OptTable.h"
+#include "clang/Driver/Option.h"
+#include "clang/Driver/Options.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+
+// FIXME: This needs to be listed last until we fix the broken include guards
+// in these files and the LLVM config.h files.
+#include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
+
+#include <cstdlib> // ::getenv
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang;
+
+/// Darwin - Darwin tool chain for i386 and x86_64.
+
+Darwin::Darwin(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : ToolChain(D, Triple, Args), TargetInitialized(false)
+{
+ // Compute the initial Darwin version from the triple
+ unsigned Major, Minor, Micro;
+ if (!Triple.getMacOSXVersion(Major, Minor, Micro))
+ getDriver().Diag(diag::err_drv_invalid_darwin_version) <<
+ Triple.getOSName();
+ llvm::raw_string_ostream(MacosxVersionMin)
+ << Major << '.' << Minor << '.' << Micro;
+
+ // FIXME: DarwinVersion is only used to find GCC's libexec directory.
+ // It should be removed when we stop supporting that.
+ DarwinVersion[0] = Minor + 4;
+ DarwinVersion[1] = Micro;
+ DarwinVersion[2] = 0;
+
+ // Compute the initial iOS version from the triple
+ Triple.getiOSVersion(Major, Minor, Micro);
+ llvm::raw_string_ostream(iOSVersionMin)
+ << Major << '.' << Minor << '.' << Micro;
+}
+
+types::ID Darwin::LookupTypeForExtension(const char *Ext) const {
+ types::ID Ty = types::lookupTypeForExtension(Ext);
+
+ // Darwin always preprocesses assembly files (unless -x is used explicitly).
+ if (Ty == types::TY_PP_Asm)
+ return types::TY_Asm;
+
+ return Ty;
+}
+
+bool Darwin::HasNativeLLVMSupport() const {
+ return true;
+}
+
+/// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
+ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const {
+ if (isTargetIPhoneOS())
+ return ObjCRuntime(ObjCRuntime::iOS, TargetVersion);
+ if (isNonFragile)
+ return ObjCRuntime(ObjCRuntime::MacOSX, TargetVersion);
+ return ObjCRuntime(ObjCRuntime::FragileMacOSX, TargetVersion);
+}
+
+/// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2.
+bool Darwin::hasBlocksRuntime() const {
+ if (isTargetIPhoneOS())
+ return !isIPhoneOSVersionLT(3, 2);
+ else
+ return !isMacosxVersionLT(10, 6);
+}
+
+static const char *GetArmArchForMArch(StringRef Value) {
+ return llvm::StringSwitch<const char*>(Value)
+ .Case("armv6k", "armv6")
+ .Case("armv6m", "armv6m")
+ .Case("armv5tej", "armv5")
+ .Case("xscale", "xscale")
+ .Case("armv4t", "armv4t")
+ .Case("armv7", "armv7")
+ .Cases("armv7a", "armv7-a", "armv7")
+ .Cases("armv7r", "armv7-r", "armv7")
+ .Cases("armv7em", "armv7e-m", "armv7em")
+ .Cases("armv7f", "armv7-f", "armv7f")
+ .Cases("armv7k", "armv7-k", "armv7k")
+ .Cases("armv7m", "armv7-m", "armv7m")
+ .Cases("armv7s", "armv7-s", "armv7s")
+ .Default(0);
+}
+
+static const char *GetArmArchForMCpu(StringRef Value) {
+ return llvm::StringSwitch<const char *>(Value)
+ .Cases("arm9e", "arm946e-s", "arm966e-s", "arm968e-s", "arm926ej-s","armv5")
+ .Cases("arm10e", "arm10tdmi", "armv5")
+ .Cases("arm1020t", "arm1020e", "arm1022e", "arm1026ej-s", "armv5")
+ .Case("xscale", "xscale")
+ .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", "arm1176jzf-s", "armv6")
+ .Case("cortex-m0", "armv6m")
+ .Cases("cortex-a8", "cortex-r4", "cortex-a9", "cortex-a15", "armv7")
+ .Case("cortex-a9-mp", "armv7f")
+ .Case("cortex-m3", "armv7m")
+ .Case("cortex-m4", "armv7em")
+ .Case("swift", "armv7s")
+ .Default(0);
+}
+
+StringRef Darwin::getDarwinArchName(const ArgList &Args) const {
+ switch (getTriple().getArch()) {
+ default:
+ return getArchName();
+
+ case llvm::Triple::thumb:
+ case llvm::Triple::arm: {
+ if (const Arg *A = Args.getLastArg(options::OPT_march_EQ))
+ if (const char *Arch = GetArmArchForMArch(A->getValue()))
+ return Arch;
+
+ if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
+ if (const char *Arch = GetArmArchForMCpu(A->getValue()))
+ return Arch;
+
+ return "arm";
+ }
+ }
+}
+
+Darwin::~Darwin() {
+}
+
+std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args,
+ types::ID InputType) const {
+ llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
+
+ // If the target isn't initialized (e.g., an unknown Darwin platform, return
+ // the default triple).
+ if (!isTargetInitialized())
+ return Triple.getTriple();
+
+ SmallString<16> Str;
+ Str += isTargetIPhoneOS() ? "ios" : "macosx";
+ Str += getTargetVersion().getAsString();
+ Triple.setOSName(Str);
+
+ return Triple.getTriple();
+}
+
+void Generic_ELF::anchor() {}
+
+Tool *Darwin::getTool(Action::ActionClass AC) const {
+ switch (AC) {
+ case Action::LipoJobClass:
+ if (!Lipo)
+ Lipo.reset(new tools::darwin::Lipo(*this));
+ return Lipo.get();
+ case Action::DsymutilJobClass:
+ if (!Dsymutil)
+ Dsymutil.reset(new tools::darwin::Dsymutil(*this));
+ return Dsymutil.get();
+ case Action::VerifyJobClass:
+ if (!VerifyDebug)
+ VerifyDebug.reset(new tools::darwin::VerifyDebug(*this));
+ return VerifyDebug.get();
+ default:
+ return ToolChain::getTool(AC);
+ }
+}
+
+Tool *Darwin::buildLinker() const {
+ return new tools::darwin::Link(*this);
+}
+
+Tool *Darwin::buildAssembler() const {
+ return new tools::darwin::Assemble(*this);
+}
+
+DarwinClang::DarwinClang(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : Darwin(D, Triple, Args)
+{
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+
+ // We expect 'as', 'ld', etc. to be adjacent to our install dir.
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+}
+
+void DarwinClang::AddLinkARCArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+
+ CmdArgs.push_back("-force_load");
+ llvm::sys::Path P(getDriver().ClangExecutable);
+ P.eraseComponent(); // 'clang'
+ P.eraseComponent(); // 'bin'
+ P.appendComponent("lib");
+ P.appendComponent("arc");
+ P.appendComponent("libarclite_");
+ std::string s = P.str();
+ // Mash in the platform.
+ if (isTargetIOSSimulator())
+ s += "iphonesimulator";
+ else if (isTargetIPhoneOS())
+ s += "iphoneos";
+ else
+ s += "macosx";
+ s += ".a";
+
+ CmdArgs.push_back(Args.MakeArgString(s));
+}
+
+void DarwinClang::AddLinkRuntimeLib(const ArgList &Args,
+ ArgStringList &CmdArgs,
+ const char *DarwinStaticLib,
+ bool AlwaysLink) const {
+ llvm::sys::Path P(getDriver().ResourceDir);
+ P.appendComponent("lib");
+ P.appendComponent("darwin");
+ P.appendComponent(DarwinStaticLib);
+
+ // For now, allow missing resource libraries to support developers who may
+ // not have compiler-rt checked out or integrated into their build (unless
+ // we explicitly force linking with this library).
+ bool Exists;
+ if (AlwaysLink || (!llvm::sys::fs::exists(P.str(), Exists) && Exists))
+ CmdArgs.push_back(Args.MakeArgString(P.str()));
+}
+
+void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ // Darwin only supports the compiler-rt based runtime libraries.
+ switch (GetRuntimeLibType(Args)) {
+ case ToolChain::RLT_CompilerRT:
+ break;
+ default:
+ getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform)
+ << Args.getLastArg(options::OPT_rtlib_EQ)->getValue() << "darwin";
+ return;
+ }
+
+ // Darwin doesn't support real static executables, don't link any runtime
+ // libraries with -static.
+ if (Args.hasArg(options::OPT_static) ||
+ Args.hasArg(options::OPT_fapple_kext) ||
+ Args.hasArg(options::OPT_mkernel))
+ return;
+
+ // Reject -static-libgcc for now, we can deal with this when and if someone
+ // cares. This is useful in situations where someone wants to statically link
+ // something like libstdc++, and needs its runtime support routines.
+ if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) {
+ getDriver().Diag(diag::err_drv_unsupported_opt)
+ << A->getAsString(Args);
+ return;
+ }
+
+ // If we are building profile support, link that library in.
+ if (Args.hasArg(options::OPT_fprofile_arcs) ||
+ Args.hasArg(options::OPT_fprofile_generate) ||
+ Args.hasArg(options::OPT_fcreate_profile) ||
+ Args.hasArg(options::OPT_coverage)) {
+ // Select the appropriate runtime library for the target.
+ if (isTargetIPhoneOS()) {
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_ios.a");
+ } else {
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_osx.a");
+ }
+ }
+
+ SanitizerArgs Sanitize(*this, Args);
+
+ // Add Ubsan runtime library, if required.
+ if (Sanitize.needsUbsanRt()) {
+ if (isTargetIPhoneOS()) {
+ getDriver().Diag(diag::err_drv_clang_unsupported_per_platform)
+ << "-fsanitize=undefined";
+ } else {
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ubsan_osx.a", true);
+
+ // The Ubsan runtime library requires C++.
+ AddCXXStdlibLibArgs(Args, CmdArgs);
+ }
+ }
+
+ // Add ASAN runtime library, if required. Dynamic libraries and bundles
+ // should not be linked with the runtime library.
+ if (Sanitize.needsAsanRt()) {
+ if (isTargetIPhoneOS() && !isTargetIOSSimulator()) {
+ getDriver().Diag(diag::err_drv_clang_unsupported_per_platform)
+ << "-fsanitize=address";
+ } else {
+ if (Args.hasArg(options::OPT_dynamiclib) ||
+ Args.hasArg(options::OPT_bundle)) {
+ // Assume the binary will provide the ASan runtime.
+ } else {
+ AddLinkRuntimeLib(Args, CmdArgs,
+ "libclang_rt.asan_osx_dynamic.dylib", true);
+ // The ASAN runtime library requires C++.
+ AddCXXStdlibLibArgs(Args, CmdArgs);
+ }
+ }
+ }
+
+ // Otherwise link libSystem, then the dynamic runtime library, and finally any
+ // target specific static runtime library.
+ CmdArgs.push_back("-lSystem");
+
+ // Select the dynamic runtime library and the target specific static library.
+ if (isTargetIPhoneOS()) {
+ // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1,
+ // it never went into the SDK.
+ // Linking against libgcc_s.1 isn't needed for iOS 5.0+
+ if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator())
+ CmdArgs.push_back("-lgcc_s.1");
+
+ // We currently always need a static runtime library for iOS.
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ios.a");
+ } else {
+ // The dynamic runtime library was merged with libSystem for 10.6 and
+ // beyond; only 10.4 and 10.5 need an additional runtime library.
+ if (isMacosxVersionLT(10, 5))
+ CmdArgs.push_back("-lgcc_s.10.4");
+ else if (isMacosxVersionLT(10, 6))
+ CmdArgs.push_back("-lgcc_s.10.5");
+
+ // For OS X, we thought we would only need a static runtime library when
+ // targeting 10.4, to provide versions of the static functions which were
+ // omitted from 10.4.dylib.
+ //
+ // Unfortunately, that turned out to not be true, because Darwin system
+ // headers can still use eprintf on i386, and it is not exported from
+ // libSystem. Therefore, we still must provide a runtime library just for
+ // the tiny tiny handful of projects that *might* use that symbol.
+ if (isMacosxVersionLT(10, 5)) {
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a");
+ } else {
+ if (getTriple().getArch() == llvm::Triple::x86)
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.eprintf.a");
+ AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a");
+ }
+ }
+}
+
+void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
+ const OptTable &Opts = getDriver().getOpts();
+
+ // Support allowing the SDKROOT environment variable used by xcrun and other
+ // Xcode tools to define the default sysroot, by making it the default for
+ // isysroot.
+ if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
+ // Warn if the path does not exist.
+ bool Exists;
+ if (llvm::sys::fs::exists(A->getValue(), Exists) || !Exists)
+ getDriver().Diag(clang::diag::warn_missing_sysroot) << A->getValue();
+ } else {
+ if (char *env = ::getenv("SDKROOT")) {
+ // We only use this value as the default if it is an absolute path,
+ // exists, and it is not the root path.
+ if (llvm::sys::path::is_absolute(env) && llvm::sys::fs::exists(env) &&
+ StringRef(env) != "/") {
+ Args.append(Args.MakeSeparateArg(
+ 0, Opts.getOption(options::OPT_isysroot), env));
+ }
+ }
+ }
+
+ Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ);
+ Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ);
+ Arg *iOSSimVersion = Args.getLastArg(
+ options::OPT_mios_simulator_version_min_EQ);
+
+ if (OSXVersion && (iOSVersion || iOSSimVersion)) {
+ getDriver().Diag(diag::err_drv_argument_not_allowed_with)
+ << OSXVersion->getAsString(Args)
+ << (iOSVersion ? iOSVersion : iOSSimVersion)->getAsString(Args);
+ iOSVersion = iOSSimVersion = 0;
+ } else if (iOSVersion && iOSSimVersion) {
+ getDriver().Diag(diag::err_drv_argument_not_allowed_with)
+ << iOSVersion->getAsString(Args)
+ << iOSSimVersion->getAsString(Args);
+ iOSSimVersion = 0;
+ } else if (!OSXVersion && !iOSVersion && !iOSSimVersion) {
+ // If no deployment target was specified on the command line, check for
+ // environment defines.
+ StringRef OSXTarget;
+ StringRef iOSTarget;
+ StringRef iOSSimTarget;
+ if (char *env = ::getenv("MACOSX_DEPLOYMENT_TARGET"))
+ OSXTarget = env;
+ if (char *env = ::getenv("IPHONEOS_DEPLOYMENT_TARGET"))
+ iOSTarget = env;
+ if (char *env = ::getenv("IOS_SIMULATOR_DEPLOYMENT_TARGET"))
+ iOSSimTarget = env;
+
+ // If no '-miphoneos-version-min' specified on the command line and
+ // IPHONEOS_DEPLOYMENT_TARGET is not defined, see if we can set the default
+ // based on -isysroot.
+ if (iOSTarget.empty()) {
+ if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
+ StringRef first, second;
+ StringRef isysroot = A->getValue();
+ llvm::tie(first, second) = isysroot.split(StringRef("SDKs/iPhoneOS"));
+ if (second != "")
+ iOSTarget = second.substr(0,3);
+ }
+ }
+
+ // If no OSX or iOS target has been specified and we're compiling for armv7,
+ // go ahead as assume we're targeting iOS.
+ if (OSXTarget.empty() && iOSTarget.empty() &&
+ (getDarwinArchName(Args) == "armv7" ||
+ getDarwinArchName(Args) == "armv7s"))
+ iOSTarget = iOSVersionMin;
+
+ // Handle conflicting deployment targets
+ //
+ // FIXME: Don't hardcode default here.
+
+ // Do not allow conflicts with the iOS simulator target.
+ if (!iOSSimTarget.empty() && (!OSXTarget.empty() || !iOSTarget.empty())) {
+ getDriver().Diag(diag::err_drv_conflicting_deployment_targets)
+ << "IOS_SIMULATOR_DEPLOYMENT_TARGET"
+ << (!OSXTarget.empty() ? "MACOSX_DEPLOYMENT_TARGET" :
+ "IPHONEOS_DEPLOYMENT_TARGET");
+ }
+
+ // Allow conflicts among OSX and iOS for historical reasons, but choose the
+ // default platform.
+ if (!OSXTarget.empty() && !iOSTarget.empty()) {
+ if (getTriple().getArch() == llvm::Triple::arm ||
+ getTriple().getArch() == llvm::Triple::thumb)
+ OSXTarget = "";
+ else
+ iOSTarget = "";
+ }
+
+ if (!OSXTarget.empty()) {
+ const Option O = Opts.getOption(options::OPT_mmacosx_version_min_EQ);
+ OSXVersion = Args.MakeJoinedArg(0, O, OSXTarget);
+ Args.append(OSXVersion);
+ } else if (!iOSTarget.empty()) {
+ const Option O = Opts.getOption(options::OPT_miphoneos_version_min_EQ);
+ iOSVersion = Args.MakeJoinedArg(0, O, iOSTarget);
+ Args.append(iOSVersion);
+ } else if (!iOSSimTarget.empty()) {
+ const Option O = Opts.getOption(
+ options::OPT_mios_simulator_version_min_EQ);
+ iOSSimVersion = Args.MakeJoinedArg(0, O, iOSSimTarget);
+ Args.append(iOSSimVersion);
+ } else {
+ // Otherwise, assume we are targeting OS X.
+ const Option O = Opts.getOption(options::OPT_mmacosx_version_min_EQ);
+ OSXVersion = Args.MakeJoinedArg(0, O, MacosxVersionMin);
+ Args.append(OSXVersion);
+ }
+ }
+
+ // Reject invalid architecture combinations.
+ if (iOSSimVersion && (getTriple().getArch() != llvm::Triple::x86 &&
+ getTriple().getArch() != llvm::Triple::x86_64)) {
+ getDriver().Diag(diag::err_drv_invalid_arch_for_deployment_target)
+ << getTriple().getArchName() << iOSSimVersion->getAsString(Args);
+ }
+
+ // Set the tool chain target information.
+ unsigned Major, Minor, Micro;
+ bool HadExtra;
+ if (OSXVersion) {
+ assert((!iOSVersion && !iOSSimVersion) && "Unknown target platform!");
+ if (!Driver::GetReleaseVersion(OSXVersion->getValue(), Major, Minor,
+ Micro, HadExtra) || HadExtra ||
+ Major != 10 || Minor >= 100 || Micro >= 100)
+ getDriver().Diag(diag::err_drv_invalid_version_number)
+ << OSXVersion->getAsString(Args);
+ } else {
+ const Arg *Version = iOSVersion ? iOSVersion : iOSSimVersion;
+ assert(Version && "Unknown target platform!");
+ if (!Driver::GetReleaseVersion(Version->getValue(), Major, Minor,
+ Micro, HadExtra) || HadExtra ||
+ Major >= 10 || Minor >= 100 || Micro >= 100)
+ getDriver().Diag(diag::err_drv_invalid_version_number)
+ << Version->getAsString(Args);
+ }
+
+ bool IsIOSSim = bool(iOSSimVersion);
+
+ // In GCC, the simulator historically was treated as being OS X in some
+ // contexts, like determining the link logic, despite generally being called
+ // with an iOS deployment target. For compatibility, we detect the
+ // simulator as iOS + x86, and treat it differently in a few contexts.
+ if (iOSVersion && (getTriple().getArch() == llvm::Triple::x86 ||
+ getTriple().getArch() == llvm::Triple::x86_64))
+ IsIOSSim = true;
+
+ setTarget(/*IsIPhoneOS=*/ !OSXVersion, Major, Minor, Micro, IsIOSSim);
+}
+
+void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ CXXStdlibType Type = GetCXXStdlibType(Args);
+
+ switch (Type) {
+ case ToolChain::CST_Libcxx:
+ CmdArgs.push_back("-lc++");
+ break;
+
+ case ToolChain::CST_Libstdcxx: {
+ // Unfortunately, -lstdc++ doesn't always exist in the standard search path;
+ // it was previously found in the gcc lib dir. However, for all the Darwin
+ // platforms we care about it was -lstdc++.6, so we search for that
+ // explicitly if we can't see an obvious -lstdc++ candidate.
+
+ // Check in the sysroot first.
+ bool Exists;
+ if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
+ llvm::sys::Path P(A->getValue());
+ P.appendComponent("usr");
+ P.appendComponent("lib");
+ P.appendComponent("libstdc++.dylib");
+
+ if (llvm::sys::fs::exists(P.str(), Exists) || !Exists) {
+ P.eraseComponent();
+ P.appendComponent("libstdc++.6.dylib");
+ if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) {
+ CmdArgs.push_back(Args.MakeArgString(P.str()));
+ return;
+ }
+ }
+ }
+
+ // Otherwise, look in the root.
+ // FIXME: This should be removed someday when we don't have to care about
+ // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist.
+ if ((llvm::sys::fs::exists("/usr/lib/libstdc++.dylib", Exists) || !Exists)&&
+ (!llvm::sys::fs::exists("/usr/lib/libstdc++.6.dylib", Exists) && Exists)){
+ CmdArgs.push_back("/usr/lib/libstdc++.6.dylib");
+ return;
+ }
+
+ // Otherwise, let the linker search.
+ CmdArgs.push_back("-lstdc++");
+ break;
+ }
+ }
+}
+
+void DarwinClang::AddCCKextLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+
+ // For Darwin platforms, use the compiler-rt-based support library
+ // instead of the gcc-provided one (which is also incidentally
+ // only present in the gcc lib dir, which makes it hard to find).
+
+ llvm::sys::Path P(getDriver().ResourceDir);
+ P.appendComponent("lib");
+ P.appendComponent("darwin");
+
+ // Use the newer cc_kext for iOS ARM after 6.0.
+ if (!isTargetIPhoneOS() || isTargetIOSSimulator() ||
+ !isIPhoneOSVersionLT(6, 0)) {
+ P.appendComponent("libclang_rt.cc_kext.a");
+ } else {
+ P.appendComponent("libclang_rt.cc_kext_ios5.a");
+ }
+
+ // For now, allow missing resource libraries to support developers who may
+ // not have compiler-rt checked out or integrated into their build.
+ bool Exists;
+ if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
+ CmdArgs.push_back(Args.MakeArgString(P.str()));
+}
+
+DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args,
+ const char *BoundArch) const {
+ DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
+ const OptTable &Opts = getDriver().getOpts();
+
+ // FIXME: We really want to get out of the tool chain level argument
+ // translation business, as it makes the driver functionality much
+ // more opaque. For now, we follow gcc closely solely for the
+ // purpose of easily achieving feature parity & testability. Once we
+ // have something that works, we should reevaluate each translation
+ // and try to push it down into tool specific logic.
+
+ for (ArgList::const_iterator it = Args.begin(),
+ ie = Args.end(); it != ie; ++it) {
+ Arg *A = *it;
+
+ if (A->getOption().matches(options::OPT_Xarch__)) {
+ // Skip this argument unless the architecture matches either the toolchain
+ // triple arch, or the arch being bound.
+ llvm::Triple::ArchType XarchArch =
+ tools::darwin::getArchTypeForDarwinArchName(A->getValue(0));
+ if (!(XarchArch == getArch() ||
+ (BoundArch && XarchArch ==
+ tools::darwin::getArchTypeForDarwinArchName(BoundArch))))
+ continue;
+
+ Arg *OriginalArg = A;
+ unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(1));
+ unsigned Prev = Index;
+ Arg *XarchArg = Opts.ParseOneArg(Args, Index);
+
+ // If the argument parsing failed or more than one argument was
+ // consumed, the -Xarch_ argument's parameter tried to consume
+ // extra arguments. Emit an error and ignore.
+ //
+ // We also want to disallow any options which would alter the
+ // driver behavior; that isn't going to work in our model. We
+ // use isDriverOption() as an approximation, although things
+ // like -O4 are going to slip through.
+ if (!XarchArg || Index > Prev + 1) {
+ getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args)
+ << A->getAsString(Args);
+ continue;
+ } else if (XarchArg->getOption().hasFlag(options::DriverOption)) {
+ getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver)
+ << A->getAsString(Args);
+ continue;
+ }
+
+ XarchArg->setBaseArg(A);
+ A = XarchArg;
+
+ DAL->AddSynthesizedArg(A);
+
+ // Linker input arguments require custom handling. The problem is that we
+ // have already constructed the phase actions, so we can not treat them as
+ // "input arguments".
+ if (A->getOption().hasFlag(options::LinkerInput)) {
+ // Convert the argument into individual Zlinker_input_args.
+ for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) {
+ DAL->AddSeparateArg(OriginalArg,
+ Opts.getOption(options::OPT_Zlinker_input),
+ A->getValue(i));
+
+ }
+ continue;
+ }
+ }
+
+ // Sob. These is strictly gcc compatible for the time being. Apple
+ // gcc translates options twice, which means that self-expanding
+ // options add duplicates.
+ switch ((options::ID) A->getOption().getID()) {
+ default:
+ DAL->append(A);
+ break;
+
+ case options::OPT_mkernel:
+ case options::OPT_fapple_kext:
+ DAL->append(A);
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
+ break;
+
+ case options::OPT_dependency_file:
+ DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF),
+ A->getValue());
+ break;
+
+ case options::OPT_gfull:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
+ DAL->AddFlagArg(A,
+ Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols));
+ break;
+
+ case options::OPT_gused:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag));
+ DAL->AddFlagArg(A,
+ Opts.getOption(options::OPT_feliminate_unused_debug_symbols));
+ break;
+
+ case options::OPT_shared:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib));
+ break;
+
+ case options::OPT_fconstant_cfstrings:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings));
+ break;
+
+ case options::OPT_fno_constant_cfstrings:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings));
+ break;
+
+ case options::OPT_Wnonportable_cfstrings:
+ DAL->AddFlagArg(A,
+ Opts.getOption(options::OPT_mwarn_nonportable_cfstrings));
+ break;
+
+ case options::OPT_Wno_nonportable_cfstrings:
+ DAL->AddFlagArg(A,
+ Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings));
+ break;
+
+ case options::OPT_fpascal_strings:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings));
+ break;
+
+ case options::OPT_fno_pascal_strings:
+ DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings));
+ break;
+ }
+ }
+
+ if (getTriple().getArch() == llvm::Triple::x86 ||
+ getTriple().getArch() == llvm::Triple::x86_64)
+ if (!Args.hasArgNoClaim(options::OPT_mtune_EQ))
+ DAL->AddJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ), "core2");
+
+ // Add the arch options based on the particular spelling of -arch, to match
+ // how the driver driver works.
+ if (BoundArch) {
+ StringRef Name = BoundArch;
+ const Option MCpu = Opts.getOption(options::OPT_mcpu_EQ);
+ const Option MArch = Opts.getOption(options::OPT_march_EQ);
+
+ // This code must be kept in sync with LLVM's getArchTypeForDarwinArch,
+ // which defines the list of which architectures we accept.
+ if (Name == "ppc")
+ ;
+ else if (Name == "ppc601")
+ DAL->AddJoinedArg(0, MCpu, "601");
+ else if (Name == "ppc603")
+ DAL->AddJoinedArg(0, MCpu, "603");
+ else if (Name == "ppc604")
+ DAL->AddJoinedArg(0, MCpu, "604");
+ else if (Name == "ppc604e")
+ DAL->AddJoinedArg(0, MCpu, "604e");
+ else if (Name == "ppc750")
+ DAL->AddJoinedArg(0, MCpu, "750");
+ else if (Name == "ppc7400")
+ DAL->AddJoinedArg(0, MCpu, "7400");
+ else if (Name == "ppc7450")
+ DAL->AddJoinedArg(0, MCpu, "7450");
+ else if (Name == "ppc970")
+ DAL->AddJoinedArg(0, MCpu, "970");
+
+ else if (Name == "ppc64")
+ DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64));
+
+ else if (Name == "i386")
+ ;
+ else if (Name == "i486")
+ DAL->AddJoinedArg(0, MArch, "i486");
+ else if (Name == "i586")
+ DAL->AddJoinedArg(0, MArch, "i586");
+ else if (Name == "i686")
+ DAL->AddJoinedArg(0, MArch, "i686");
+ else if (Name == "pentium")
+ DAL->AddJoinedArg(0, MArch, "pentium");
+ else if (Name == "pentium2")
+ DAL->AddJoinedArg(0, MArch, "pentium2");
+ else if (Name == "pentpro")
+ DAL->AddJoinedArg(0, MArch, "pentiumpro");
+ else if (Name == "pentIIm3")
+ DAL->AddJoinedArg(0, MArch, "pentium2");
+
+ else if (Name == "x86_64")
+ DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64));
+
+ else if (Name == "arm")
+ DAL->AddJoinedArg(0, MArch, "armv4t");
+ else if (Name == "armv4t")
+ DAL->AddJoinedArg(0, MArch, "armv4t");
+ else if (Name == "armv5")
+ DAL->AddJoinedArg(0, MArch, "armv5tej");
+ else if (Name == "xscale")
+ DAL->AddJoinedArg(0, MArch, "xscale");
+ else if (Name == "armv6")
+ DAL->AddJoinedArg(0, MArch, "armv6k");
+ else if (Name == "armv6m")
+ DAL->AddJoinedArg(0, MArch, "armv6m");
+ else if (Name == "armv7")
+ DAL->AddJoinedArg(0, MArch, "armv7a");
+ else if (Name == "armv7em")
+ DAL->AddJoinedArg(0, MArch, "armv7em");
+ else if (Name == "armv7f")
+ DAL->AddJoinedArg(0, MArch, "armv7f");
+ else if (Name == "armv7k")
+ DAL->AddJoinedArg(0, MArch, "armv7k");
+ else if (Name == "armv7m")
+ DAL->AddJoinedArg(0, MArch, "armv7m");
+ else if (Name == "armv7s")
+ DAL->AddJoinedArg(0, MArch, "armv7s");
+
+ else
+ llvm_unreachable("invalid Darwin arch");
+ }
+
+ // Add an explicit version min argument for the deployment target. We do this
+ // after argument translation because -Xarch_ arguments may add a version min
+ // argument.
+ if (BoundArch)
+ AddDeploymentTarget(*DAL);
+
+ // For iOS 6, undo the translation to add -static for -mkernel/-fapple-kext.
+ // FIXME: It would be far better to avoid inserting those -static arguments,
+ // but we can't check the deployment target in the translation code until
+ // it is set here.
+ if (isTargetIPhoneOS() && !isIPhoneOSVersionLT(6, 0)) {
+ for (ArgList::iterator it = DAL->begin(), ie = DAL->end(); it != ie; ) {
+ Arg *A = *it;
+ ++it;
+ if (A->getOption().getID() != options::OPT_mkernel &&
+ A->getOption().getID() != options::OPT_fapple_kext)
+ continue;
+ assert(it != ie && "unexpected argument translation");
+ A = *it;
+ assert(A->getOption().getID() == options::OPT_static &&
+ "missing expected -static argument");
+ it = DAL->getArgs().erase(it);
+ }
+ }
+
+ // Validate the C++ standard library choice.
+ CXXStdlibType Type = GetCXXStdlibType(*DAL);
+ if (Type == ToolChain::CST_Libcxx) {
+ // Check whether the target provides libc++.
+ StringRef where;
+
+ // Complain about targetting iOS < 5.0 in any way.
+ if (isTargetIPhoneOS() && isIPhoneOSVersionLT(5, 0))
+ where = "iOS 5.0";
+
+ if (where != StringRef()) {
+ getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment)
+ << where;
+ }
+ }
+
+ return DAL;
+}
+
+bool Darwin::IsUnwindTablesDefault() const {
+ return getArch() == llvm::Triple::x86_64;
+}
+
+bool Darwin::UseDwarfDebugFlags() const {
+ if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
+ return S[0] != '\0';
+ return false;
+}
+
+bool Darwin::UseSjLjExceptions() const {
+ // Darwin uses SjLj exceptions on ARM.
+ return (getTriple().getArch() == llvm::Triple::arm ||
+ getTriple().getArch() == llvm::Triple::thumb);
+}
+
+bool Darwin::isPICDefault() const {
+ return true;
+}
+
+bool Darwin::isPIEDefault() const {
+ return false;
+}
+
+bool Darwin::isPICDefaultForced() const {
+ return getArch() == llvm::Triple::x86_64;
+}
+
+bool Darwin::SupportsProfiling() const {
+ // Profiling instrumentation is only supported on x86.
+ return getArch() == llvm::Triple::x86 || getArch() == llvm::Triple::x86_64;
+}
+
+bool Darwin::SupportsObjCGC() const {
+ // Garbage collection is supported everywhere except on iPhone OS.
+ return !isTargetIPhoneOS();
+}
+
+void Darwin::CheckObjCARC() const {
+ if (isTargetIPhoneOS() || !isMacosxVersionLT(10, 6))
+ return;
+ getDriver().Diag(diag::err_arc_unsupported_on_toolchain);
+}
+
+std::string
+Darwin_Generic_GCC::ComputeEffectiveClangTriple(const ArgList &Args,
+ types::ID InputType) const {
+ return ComputeLLVMTriple(Args, InputType);
+}
+
+/// Generic_GCC - A tool chain using the 'gcc' command to perform
+/// all subcommands; this relies on gcc translating the majority of
+/// command line options.
+
+/// \brief Parse a GCCVersion object out of a string of text.
+///
+/// This is the primary means of forming GCCVersion objects.
+/*static*/
+Generic_GCC::GCCVersion Linux::GCCVersion::Parse(StringRef VersionText) {
+ const GCCVersion BadVersion = { VersionText.str(), -1, -1, -1, "" };
+ std::pair<StringRef, StringRef> First = VersionText.split('.');
+ std::pair<StringRef, StringRef> Second = First.second.split('.');
+
+ GCCVersion GoodVersion = { VersionText.str(), -1, -1, -1, "" };
+ if (First.first.getAsInteger(10, GoodVersion.Major) ||
+ GoodVersion.Major < 0)
+ return BadVersion;
+ if (Second.first.getAsInteger(10, GoodVersion.Minor) ||
+ GoodVersion.Minor < 0)
+ return BadVersion;
+
+ // First look for a number prefix and parse that if present. Otherwise just
+ // stash the entire patch string in the suffix, and leave the number
+ // unspecified. This covers versions strings such as:
+ // 4.4
+ // 4.4.0
+ // 4.4.x
+ // 4.4.2-rc4
+ // 4.4.x-patched
+ // And retains any patch number it finds.
+ StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str();
+ if (!PatchText.empty()) {
+ if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
+ // Try to parse the number and any suffix.
+ if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
+ GoodVersion.Patch < 0)
+ return BadVersion;
+ GoodVersion.PatchSuffix = PatchText.substr(EndNumber).str();
+ }
+ }
+
+ return GoodVersion;
+}
+
+/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering.
+bool Generic_GCC::GCCVersion::operator<(const GCCVersion &RHS) const {
+ if (Major != RHS.Major)
+ return Major < RHS.Major;
+ if (Minor != RHS.Minor)
+ return Minor < RHS.Minor;
+ if (Patch != RHS.Patch) {
+ // Note that versions without a specified patch sort higher than those with
+ // a patch.
+ if (RHS.Patch == -1)
+ return true;
+ if (Patch == -1)
+ return false;
+
+ // Otherwise just sort on the patch itself.
+ return Patch < RHS.Patch;
+ }
+ if (PatchSuffix != RHS.PatchSuffix) {
+ // Sort empty suffixes higher.
+ if (RHS.PatchSuffix.empty())
+ return true;
+ if (PatchSuffix.empty())
+ return false;
+
+ // Provide a lexicographic sort to make this a total ordering.
+ return PatchSuffix < RHS.PatchSuffix;
+ }
+
+ // The versions are equal.
+ return false;
+}
+
+static StringRef getGCCToolchainDir(const ArgList &Args) {
+ const Arg *A = Args.getLastArg(options::OPT_gcc_toolchain);
+ if (A)
+ return A->getValue();
+ return GCC_INSTALL_PREFIX;
+}
+
+/// \brief Construct a GCCInstallationDetector from the driver.
+///
+/// This performs all of the autodetection and sets up the various paths.
+/// Once constructed, a GCCInstallationDetector is essentially immutable.
+///
+/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
+/// should instead pull the target out of the driver. This is currently
+/// necessary because the driver doesn't store the final version of the target
+/// triple.
+Generic_GCC::GCCInstallationDetector::GCCInstallationDetector(
+ const Driver &D,
+ const llvm::Triple &TargetTriple,
+ const ArgList &Args)
+ : IsValid(false) {
+ llvm::Triple MultiarchTriple
+ = TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant()
+ : TargetTriple.get32BitArchVariant();
+ llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
+ // The library directories which may contain GCC installations.
+ SmallVector<StringRef, 4> CandidateLibDirs, CandidateMultiarchLibDirs;
+ // The compatible GCC triples for this particular architecture.
+ SmallVector<StringRef, 10> CandidateTripleAliases;
+ SmallVector<StringRef, 10> CandidateMultiarchTripleAliases;
+ CollectLibDirsAndTriples(TargetTriple, MultiarchTriple, CandidateLibDirs,
+ CandidateTripleAliases,
+ CandidateMultiarchLibDirs,
+ CandidateMultiarchTripleAliases);
+
+ // Compute the set of prefixes for our search.
+ SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
+ D.PrefixDirs.end());
+
+ StringRef GCCToolchainDir = getGCCToolchainDir(Args);
+ if (GCCToolchainDir != "") {
+ if (GCCToolchainDir.back() == '/')
+ GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
+
+ Prefixes.push_back(GCCToolchainDir);
+ } else {
+ Prefixes.push_back(D.SysRoot);
+ Prefixes.push_back(D.SysRoot + "/usr");
+ Prefixes.push_back(D.InstalledDir + "/..");
+ }
+
+ // Loop over the various components which exist and select the best GCC
+ // installation available. GCC installs are ranked by version number.
+ Version = GCCVersion::Parse("0.0.0");
+ for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) {
+ if (!llvm::sys::fs::exists(Prefixes[i]))
+ continue;
+ for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) {
+ const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str();
+ if (!llvm::sys::fs::exists(LibDir))
+ continue;
+ for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k)
+ ScanLibDirForGCCTriple(TargetArch, Args, LibDir,
+ CandidateTripleAliases[k]);
+ }
+ for (unsigned j = 0, je = CandidateMultiarchLibDirs.size(); j < je; ++j) {
+ const std::string LibDir
+ = Prefixes[i] + CandidateMultiarchLibDirs[j].str();
+ if (!llvm::sys::fs::exists(LibDir))
+ continue;
+ for (unsigned k = 0, ke = CandidateMultiarchTripleAliases.size(); k < ke;
+ ++k)
+ ScanLibDirForGCCTriple(TargetArch, Args, LibDir,
+ CandidateMultiarchTripleAliases[k],
+ /*NeedsMultiarchSuffix=*/true);
+ }
+ }
+}
+
+/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
+ const llvm::Triple &TargetTriple,
+ const llvm::Triple &MultiarchTriple,
+ SmallVectorImpl<StringRef> &LibDirs,
+ SmallVectorImpl<StringRef> &TripleAliases,
+ SmallVectorImpl<StringRef> &MultiarchLibDirs,
+ SmallVectorImpl<StringRef> &MultiarchTripleAliases) {
+ // Declare a bunch of static data sets that we'll select between below. These
+ // are specifically designed to always refer to string literals to avoid any
+ // lifetime or initialization issues.
+ static const char *const AArch64LibDirs[] = { "/lib" };
+ static const char *const AArch64Triples[] = {
+ "aarch64-none-linux-gnu",
+ "aarch64-linux-gnu"
+ };
+
+ static const char *const ARMLibDirs[] = { "/lib" };
+ static const char *const ARMTriples[] = {
+ "arm-linux-gnueabi",
+ "arm-linux-androideabi"
+ };
+ static const char *const ARMHFTriples[] = {
+ "arm-linux-gnueabihf",
+ "armv7hl-redhat-linux-gnueabi"
+ };
+
+ static const char *const X86_64LibDirs[] = { "/lib64", "/lib" };
+ static const char *const X86_64Triples[] = {
+ "x86_64-linux-gnu",
+ "x86_64-unknown-linux-gnu",
+ "x86_64-pc-linux-gnu",
+ "x86_64-redhat-linux6E",
+ "x86_64-redhat-linux",
+ "x86_64-suse-linux",
+ "x86_64-manbo-linux-gnu",
+ "x86_64-linux-gnu",
+ "x86_64-slackware-linux"
+ };
+ static const char *const X86LibDirs[] = { "/lib32", "/lib" };
+ static const char *const X86Triples[] = {
+ "i686-linux-gnu",
+ "i686-pc-linux-gnu",
+ "i486-linux-gnu",
+ "i386-linux-gnu",
+ "i386-redhat-linux6E",
+ "i686-redhat-linux",
+ "i586-redhat-linux",
+ "i386-redhat-linux",
+ "i586-suse-linux",
+ "i486-slackware-linux",
+ "i686-montavista-linux"
+ };
+
+ static const char *const MIPSLibDirs[] = { "/lib" };
+ static const char *const MIPSTriples[] = { "mips-linux-gnu" };
+ static const char *const MIPSELLibDirs[] = { "/lib" };
+ static const char *const MIPSELTriples[] = {
+ "mipsel-linux-gnu",
+ "mipsel-linux-android",
+ "mips-linux-gnu"
+ };
+
+ static const char *const MIPS64LibDirs[] = { "/lib64", "/lib" };
+ static const char *const MIPS64Triples[] = { "mips64-linux-gnu" };
+ static const char *const MIPS64ELLibDirs[] = { "/lib64", "/lib" };
+ static const char *const MIPS64ELTriples[] = { "mips64el-linux-gnu" };
+
+ static const char *const PPCLibDirs[] = { "/lib32", "/lib" };
+ static const char *const PPCTriples[] = {
+ "powerpc-linux-gnu",
+ "powerpc-unknown-linux-gnu",
+ "powerpc-linux-gnuspe",
+ "powerpc-suse-linux",
+ "powerpc-montavista-linuxspe"
+ };
+ static const char *const PPC64LibDirs[] = { "/lib64", "/lib" };
+ static const char *const PPC64Triples[] = {
+ "powerpc64-linux-gnu",
+ "powerpc64-unknown-linux-gnu",
+ "powerpc64-suse-linux",
+ "ppc64-redhat-linux"
+ };
+
+ static const char *const SystemZLibDirs[] = { "/lib64", "/lib" };
+ static const char *const SystemZTriples[] = {
+ "s390x-linux-gnu",
+ "s390x-unknown-linux-gnu",
+ "s390x-ibm-linux-gnu",
+ "s390x-suse-linux",
+ "s390x-redhat-linux"
+ };
+
+ switch (TargetTriple.getArch()) {
+ case llvm::Triple::aarch64:
+ LibDirs.append(AArch64LibDirs, AArch64LibDirs
+ + llvm::array_lengthof(AArch64LibDirs));
+ TripleAliases.append(
+ AArch64Triples, AArch64Triples + llvm::array_lengthof(AArch64Triples));
+ MultiarchLibDirs.append(
+ AArch64LibDirs, AArch64LibDirs + llvm::array_lengthof(AArch64LibDirs));
+ MultiarchTripleAliases.append(
+ AArch64Triples, AArch64Triples + llvm::array_lengthof(AArch64Triples));
+ break;
+ case llvm::Triple::arm:
+ case llvm::Triple::thumb:
+ LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs));
+ if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
+ TripleAliases.append(
+ ARMHFTriples, ARMHFTriples + llvm::array_lengthof(ARMHFTriples));
+ } else {
+ TripleAliases.append(
+ ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples));
+ }
+ break;
+ case llvm::Triple::x86_64:
+ LibDirs.append(
+ X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs));
+ TripleAliases.append(
+ X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples));
+ MultiarchLibDirs.append(
+ X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs));
+ MultiarchTripleAliases.append(
+ X86Triples, X86Triples + llvm::array_lengthof(X86Triples));
+ break;
+ case llvm::Triple::x86:
+ LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs));
+ TripleAliases.append(
+ X86Triples, X86Triples + llvm::array_lengthof(X86Triples));
+ MultiarchLibDirs.append(
+ X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs));
+ MultiarchTripleAliases.append(
+ X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples));
+ break;
+ case llvm::Triple::mips:
+ LibDirs.append(
+ MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs));
+ TripleAliases.append(
+ MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples));
+ MultiarchLibDirs.append(
+ MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs));
+ MultiarchTripleAliases.append(
+ MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples));
+ break;
+ case llvm::Triple::mipsel:
+ LibDirs.append(
+ MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs));
+ TripleAliases.append(
+ MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples));
+ MultiarchLibDirs.append(
+ MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs));
+ MultiarchTripleAliases.append(
+ MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples));
+ break;
+ case llvm::Triple::mips64:
+ LibDirs.append(
+ MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs));
+ TripleAliases.append(
+ MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples));
+ MultiarchLibDirs.append(
+ MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs));
+ MultiarchTripleAliases.append(
+ MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples));
+ break;
+ case llvm::Triple::mips64el:
+ LibDirs.append(
+ MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs));
+ TripleAliases.append(
+ MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples));
+ MultiarchLibDirs.append(
+ MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs));
+ MultiarchTripleAliases.append(
+ MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples));
+ break;
+ case llvm::Triple::ppc:
+ LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs));
+ TripleAliases.append(
+ PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples));
+ MultiarchLibDirs.append(
+ PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs));
+ MultiarchTripleAliases.append(
+ PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples));
+ break;
+ case llvm::Triple::ppc64:
+ LibDirs.append(
+ PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs));
+ TripleAliases.append(
+ PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples));
+ MultiarchLibDirs.append(
+ PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs));
+ MultiarchTripleAliases.append(
+ PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples));
+ break;
+ case llvm::Triple::systemz:
+ LibDirs.append(
+ SystemZLibDirs, SystemZLibDirs + llvm::array_lengthof(SystemZLibDirs));
+ TripleAliases.append(
+ SystemZTriples, SystemZTriples + llvm::array_lengthof(SystemZTriples));
+ break;
+
+ default:
+ // By default, just rely on the standard lib directories and the original
+ // triple.
+ break;
+ }
+
+ // Always append the drivers target triple to the end, in case it doesn't
+ // match any of our aliases.
+ TripleAliases.push_back(TargetTriple.str());
+
+ // Also include the multiarch variant if it's different.
+ if (TargetTriple.str() != MultiarchTriple.str())
+ MultiarchTripleAliases.push_back(MultiarchTriple.str());
+}
+
+static bool isSoftFloatABI(const ArgList &Args) {
+ Arg *A = Args.getLastArg(options::OPT_msoft_float,
+ options::OPT_mhard_float,
+ options::OPT_mfloat_abi_EQ);
+ if (!A) return false;
+
+ return A->getOption().matches(options::OPT_msoft_float) ||
+ (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
+ A->getValue() == StringRef("soft"));
+}
+
+static bool isMipsArch(llvm::Triple::ArchType Arch) {
+ return Arch == llvm::Triple::mips ||
+ Arch == llvm::Triple::mipsel ||
+ Arch == llvm::Triple::mips64 ||
+ Arch == llvm::Triple::mips64el;
+}
+
+static bool isMips16(const ArgList &Args) {
+ Arg *A = Args.getLastArg(options::OPT_mips16,
+ options::OPT_mno_mips16);
+ return A && A->getOption().matches(options::OPT_mips16);
+}
+
+static bool isMicroMips(const ArgList &Args) {
+ Arg *A = Args.getLastArg(options::OPT_mmicromips,
+ options::OPT_mno_micromips);
+ return A && A->getOption().matches(options::OPT_mmicromips);
+}
+
+// FIXME: There is the same routine in the Tools.cpp.
+static bool hasMipsN32ABIArg(const ArgList &Args) {
+ Arg *A = Args.getLastArg(options::OPT_mabi_EQ);
+ return A && (A->getValue() == StringRef("n32"));
+}
+
+static void appendMipsTargetSuffix(std::string &Path,
+ llvm::Triple::ArchType TargetArch,
+ const ArgList &Args) {
+ if (isMips16(Args))
+ Path += "/mips16";
+ else if (isMicroMips(Args))
+ Path += "/micromips";
+
+ if (isSoftFloatABI(Args))
+ Path += "/soft-float";
+
+ if (TargetArch == llvm::Triple::mipsel ||
+ TargetArch == llvm::Triple::mips64el)
+ Path += "/el";
+}
+
+static StringRef getMipsTargetABISuffix(llvm::Triple::ArchType TargetArch,
+ const ArgList &Args) {
+ if (TargetArch == llvm::Triple::mips64 ||
+ TargetArch == llvm::Triple::mips64el)
+ return hasMipsN32ABIArg(Args) ? "/n32" : "/64";
+
+ return "/32";
+}
+
+static bool findTargetMultiarchSuffix(std::string &Suffix,
+ StringRef Path,
+ llvm::Triple::ArchType TargetArch,
+ const ArgList &Args) {
+ if (isMipsArch(TargetArch)) {
+ StringRef ABISuffix = getMipsTargetABISuffix(TargetArch, Args);
+
+ // First build and check a complex path to crtbegin.o
+ // depends on command line options (-mips16, -msoft-float, ...)
+ // like mips-linux-gnu/4.7/mips16/soft-float/el/crtbegin.o
+ appendMipsTargetSuffix(Suffix, TargetArch, Args);
+
+ if (TargetArch == llvm::Triple::mips64 ||
+ TargetArch == llvm::Triple::mips64el)
+ Suffix += ABISuffix;
+
+ if (llvm::sys::fs::exists(Path + Suffix + "/crtbegin.o"))
+ return true;
+
+ // Then fall back and probe a simple case like
+ // mips-linux-gnu/4.7/32/crtbegin.o
+ Suffix = ABISuffix;
+ return llvm::sys::fs::exists(Path + Suffix + "/crtbegin.o");
+ }
+
+ if (TargetArch == llvm::Triple::x86_64 ||
+ TargetArch == llvm::Triple::ppc64 ||
+ TargetArch == llvm::Triple::systemz)
+ Suffix = "/64";
+ else
+ Suffix = "/32";
+
+ return llvm::sys::fs::exists(Path + Suffix + "/crtbegin.o");
+}
+
+void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
+ llvm::Triple::ArchType TargetArch, const ArgList &Args,
+ const std::string &LibDir,
+ StringRef CandidateTriple, bool NeedsMultiarchSuffix) {
+ // There are various different suffixes involving the triple we
+ // check for. We also record what is necessary to walk from each back
+ // up to the lib directory.
+ const std::string LibSuffixes[] = {
+ "/gcc/" + CandidateTriple.str(),
+ "/" + CandidateTriple.str() + "/gcc/" + CandidateTriple.str(),
+
+ // The Freescale PPC SDK has the gcc libraries in
+ // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well.
+ "/" + CandidateTriple.str(),
+
+ // Ubuntu has a strange mis-matched pair of triples that this happens to
+ // match.
+ // FIXME: It may be worthwhile to generalize this and look for a second
+ // triple.
+ "/i386-linux-gnu/gcc/" + CandidateTriple.str()
+ };
+ const std::string InstallSuffixes[] = {
+ "/../../..",
+ "/../../../..",
+ "/../..",
+ "/../../../.."
+ };
+ // Only look at the final, weird Ubuntu suffix for i386-linux-gnu.
+ const unsigned NumLibSuffixes = (llvm::array_lengthof(LibSuffixes) -
+ (TargetArch != llvm::Triple::x86));
+ for (unsigned i = 0; i < NumLibSuffixes; ++i) {
+ StringRef LibSuffix = LibSuffixes[i];
+ llvm::error_code EC;
+ for (llvm::sys::fs::directory_iterator LI(LibDir + LibSuffix, EC), LE;
+ !EC && LI != LE; LI = LI.increment(EC)) {
+ StringRef VersionText = llvm::sys::path::filename(LI->path());
+ GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
+ static const GCCVersion MinVersion = { "4.1.1", 4, 1, 1, "" };
+ if (CandidateVersion < MinVersion)
+ continue;
+ if (CandidateVersion <= Version)
+ continue;
+
+ // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
+ // in what would normally be GCCInstallPath and put the 64-bit
+ // libs in a subdirectory named 64. The simple logic we follow is that
+ // *if* there is a subdirectory of the right name with crtbegin.o in it,
+ // we use that. If not, and if not a multiarch triple, we look for
+ // crtbegin.o without the subdirectory.
+
+ std::string MultiarchSuffix;
+ if (findTargetMultiarchSuffix(MultiarchSuffix,
+ LI->path(), TargetArch, Args)) {
+ GCCMultiarchSuffix = MultiarchSuffix;
+ } else {
+ if (NeedsMultiarchSuffix ||
+ !llvm::sys::fs::exists(LI->path() + "/crtbegin.o"))
+ continue;
+ GCCMultiarchSuffix.clear();
+ }
+
+ Version = CandidateVersion;
+ GCCTriple.setTriple(CandidateTriple);
+ // FIXME: We hack together the directory name here instead of
+ // using LI to ensure stable path separators across Windows and
+ // Linux.
+ GCCInstallPath = LibDir + LibSuffixes[i] + "/" + VersionText.str();
+ GCCParentLibPath = GCCInstallPath + InstallSuffixes[i];
+ IsValid = true;
+ }
+ }
+}
+
+Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : ToolChain(D, Triple, Args), GCCInstallation(getDriver(), Triple, Args) {
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+}
+
+Generic_GCC::~Generic_GCC() {
+}
+
+Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
+ switch (AC) {
+ case Action::PreprocessJobClass:
+ if (!Preprocess)
+ Preprocess.reset(new tools::gcc::Preprocess(*this));
+ return Preprocess.get();
+ case Action::PrecompileJobClass:
+ if (!Precompile)
+ Precompile.reset(new tools::gcc::Precompile(*this));
+ return Precompile.get();
+ case Action::CompileJobClass:
+ if (!Compile)
+ Compile.reset(new tools::gcc::Compile(*this));
+ return Compile.get();
+ default:
+ return ToolChain::getTool(AC);
+ }
+}
+
+Tool *Generic_GCC::buildAssembler() const {
+ return new tools::gcc::Assemble(*this);
+}
+
+Tool *Generic_GCC::buildLinker() const {
+ return new tools::gcc::Link(*this);
+}
+
+bool Generic_GCC::IsUnwindTablesDefault() const {
+ return getArch() == llvm::Triple::x86_64;
+}
+
+bool Generic_GCC::isPICDefault() const {
+ return false;
+}
+
+bool Generic_GCC::isPIEDefault() const {
+ return false;
+}
+
+bool Generic_GCC::isPICDefaultForced() const {
+ return false;
+}
+
+/// Hexagon Toolchain
+
+std::string Hexagon_TC::GetGnuDir(const std::string &InstalledDir) {
+
+ // Locate the rest of the toolchain ...
+ if (strlen(GCC_INSTALL_PREFIX))
+ return std::string(GCC_INSTALL_PREFIX);
+
+ std::string InstallRelDir = InstalledDir + "/../../gnu";
+ if (llvm::sys::fs::exists(InstallRelDir))
+ return InstallRelDir;
+
+ std::string PrefixRelDir = std::string(LLVM_PREFIX) + "/../gnu";
+ if (llvm::sys::fs::exists(PrefixRelDir))
+ return PrefixRelDir;
+
+ return InstallRelDir;
+}
+
+static void GetHexagonLibraryPaths(
+ const ArgList &Args,
+ const std::string Ver,
+ const std::string MarchString,
+ const std::string &InstalledDir,
+ ToolChain::path_list *LibPaths)
+{
+ bool buildingLib = Args.hasArg(options::OPT_shared);
+
+ //----------------------------------------------------------------------------
+ // -L Args
+ //----------------------------------------------------------------------------
+ for (arg_iterator
+ it = Args.filtered_begin(options::OPT_L),
+ ie = Args.filtered_end();
+ it != ie;
+ ++it) {
+ for (unsigned i = 0, e = (*it)->getNumValues(); i != e; ++i)
+ LibPaths->push_back((*it)->getValue(i));
+ }
+
+ //----------------------------------------------------------------------------
+ // Other standard paths
+ //----------------------------------------------------------------------------
+ const std::string MarchSuffix = "/" + MarchString;
+ const std::string G0Suffix = "/G0";
+ const std::string MarchG0Suffix = MarchSuffix + G0Suffix;
+ const std::string RootDir = Hexagon_TC::GetGnuDir(InstalledDir) + "/";
+
+ // lib/gcc/hexagon/...
+ std::string LibGCCHexagonDir = RootDir + "lib/gcc/hexagon/";
+ if (buildingLib) {
+ LibPaths->push_back(LibGCCHexagonDir + Ver + MarchG0Suffix);
+ LibPaths->push_back(LibGCCHexagonDir + Ver + G0Suffix);
+ }
+ LibPaths->push_back(LibGCCHexagonDir + Ver + MarchSuffix);
+ LibPaths->push_back(LibGCCHexagonDir + Ver);
+
+ // lib/gcc/...
+ LibPaths->push_back(RootDir + "lib/gcc");
+
+ // hexagon/lib/...
+ std::string HexagonLibDir = RootDir + "hexagon/lib";
+ if (buildingLib) {
+ LibPaths->push_back(HexagonLibDir + MarchG0Suffix);
+ LibPaths->push_back(HexagonLibDir + G0Suffix);
+ }
+ LibPaths->push_back(HexagonLibDir + MarchSuffix);
+ LibPaths->push_back(HexagonLibDir);
+}
+
+Hexagon_TC::Hexagon_TC(const Driver &D, const llvm::Triple &Triple,
+ const ArgList &Args)
+ : Linux(D, Triple, Args) {
+ const std::string InstalledDir(getDriver().getInstalledDir());
+ const std::string GnuDir = Hexagon_TC::GetGnuDir(InstalledDir);
+
+ // Note: Generic_GCC::Generic_GCC adds InstalledDir and getDriver().Dir to
+ // program paths
+ const std::string BinDir(GnuDir + "/bin");
+ if (llvm::sys::fs::exists(BinDir))
+ getProgramPaths().push_back(BinDir);
+
+ // Determine version of GCC libraries and headers to use.
+ const std::string HexagonDir(GnuDir + "/lib/gcc/hexagon");
+ llvm::error_code ec;
+ GCCVersion MaxVersion= GCCVersion::Parse("0.0.0");
+ for (llvm::sys::fs::directory_iterator di(HexagonDir, ec), de;
+ !ec && di != de; di = di.increment(ec)) {
+ GCCVersion cv = GCCVersion::Parse(llvm::sys::path::filename(di->path()));
+ if (MaxVersion < cv)
+ MaxVersion = cv;
+ }
+ GCCLibAndIncVersion = MaxVersion;
+
+ ToolChain::path_list *LibPaths= &getFilePaths();
+
+ // Remove paths added by Linux toolchain. Currently Hexagon_TC really targets
+ // 'elf' OS type, so the Linux paths are not appropriate. When we actually
+ // support 'linux' we'll need to fix this up
+ LibPaths->clear();
+
+ GetHexagonLibraryPaths(
+ Args,
+ GetGCCLibAndIncVersion(),
+ GetTargetCPU(Args),
+ InstalledDir,
+ LibPaths);
+}
+
+Hexagon_TC::~Hexagon_TC() {
+}
+
+Tool *Hexagon_TC::buildAssembler() const {
+ return new tools::hexagon::Assemble(*this);
+}
+
+Tool *Hexagon_TC::buildLinker() const {
+ return new tools::hexagon::Link(*this);
+}
+
+void Hexagon_TC::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ const Driver &D = getDriver();
+
+ if (DriverArgs.hasArg(options::OPT_nostdinc) ||
+ DriverArgs.hasArg(options::OPT_nostdlibinc))
+ return;
+
+ llvm::sys::Path InstallDir(D.InstalledDir);
+ std::string Ver(GetGCCLibAndIncVersion());
+ std::string GnuDir = Hexagon_TC::GetGnuDir(D.InstalledDir);
+ std::string HexagonDir(GnuDir + "/lib/gcc/hexagon/" + Ver);
+ addExternCSystemInclude(DriverArgs, CC1Args, HexagonDir + "/include");
+ addExternCSystemInclude(DriverArgs, CC1Args, HexagonDir + "/include-fixed");
+ addExternCSystemInclude(DriverArgs, CC1Args, GnuDir + "/hexagon/include");
+}
+
+void Hexagon_TC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ const Driver &D = getDriver();
+ std::string Ver(GetGCCLibAndIncVersion());
+ llvm::sys::Path IncludeDir(Hexagon_TC::GetGnuDir(D.InstalledDir));
+
+ IncludeDir.appendComponent("hexagon/include/c++/");
+ IncludeDir.appendComponent(Ver);
+ addSystemInclude(DriverArgs, CC1Args, IncludeDir.str());
+}
+
+ToolChain::CXXStdlibType
+Hexagon_TC::GetCXXStdlibType(const ArgList &Args) const {
+ Arg *A = Args.getLastArg(options::OPT_stdlib_EQ);
+ if (!A)
+ return ToolChain::CST_Libstdcxx;
+
+ StringRef Value = A->getValue();
+ if (Value != "libstdc++") {
+ getDriver().Diag(diag::err_drv_invalid_stdlib_name)
+ << A->getAsString(Args);
+ }
+
+ return ToolChain::CST_Libstdcxx;
+}
+
+static Arg *GetLastHexagonArchArg(const ArgList &Args)
+{
+ Arg *A = NULL;
+
+ for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
+ it != ie; ++it) {
+ if ((*it)->getOption().matches(options::OPT_march_EQ) ||
+ (*it)->getOption().matches(options::OPT_mcpu_EQ)) {
+ A = *it;
+ A->claim();
+ } else if ((*it)->getOption().matches(options::OPT_m_Joined)) {
+ StringRef Value = (*it)->getValue(0);
+ if (Value.startswith("v")) {
+ A = *it;
+ A->claim();
+ }
+ }
+ }
+ return A;
+}
+
+StringRef Hexagon_TC::GetTargetCPU(const ArgList &Args)
+{
+ // Select the default CPU (v4) if none was given or detection failed.
+ Arg *A = GetLastHexagonArchArg (Args);
+ if (A) {
+ StringRef WhichHexagon = A->getValue();
+ if (WhichHexagon.startswith("hexagon"))
+ return WhichHexagon.substr(sizeof("hexagon") - 1);
+ if (WhichHexagon != "")
+ return WhichHexagon;
+ }
+
+ return "v4";
+}
+// End Hexagon
+
+/// TCEToolChain - A tool chain using the llvm bitcode tools to perform
+/// all subcommands. See http://tce.cs.tut.fi for our peculiar target.
+/// Currently does not support anything else but compilation.
+
+TCEToolChain::TCEToolChain(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : ToolChain(D, Triple, Args) {
+ // Path mangling to find libexec
+ std::string Path(getDriver().Dir);
+
+ Path += "/../libexec";
+ getProgramPaths().push_back(Path);
+}
+
+TCEToolChain::~TCEToolChain() {
+}
+
+bool TCEToolChain::IsMathErrnoDefault() const {
+ return true;
+}
+
+bool TCEToolChain::isPICDefault() const {
+ return false;
+}
+
+bool TCEToolChain::isPIEDefault() const {
+ return false;
+}
+
+bool TCEToolChain::isPICDefaultForced() const {
+ return false;
+}
+
+/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
+
+OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+}
+
+Tool *OpenBSD::buildAssembler() const {
+ return new tools::openbsd::Assemble(*this);
+}
+
+Tool *OpenBSD::buildLinker() const {
+ return new tools::openbsd::Link(*this);
+}
+
+/// Bitrig - Bitrig tool chain which can call as(1) and ld(1) directly.
+
+Bitrig::Bitrig(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+}
+
+Tool *Bitrig::buildAssembler() const {
+ return new tools::bitrig::Assemble(*this);
+}
+
+Tool *Bitrig::buildLinker() const {
+ return new tools::bitrig::Link(*this);
+}
+
+void Bitrig::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ switch (GetCXXStdlibType(DriverArgs)) {
+ case ToolChain::CST_Libcxx:
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/");
+ break;
+ case ToolChain::CST_Libstdcxx:
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/stdc++");
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/stdc++/backward");
+
+ StringRef Triple = getTriple().str();
+ if (Triple.startswith("amd64"))
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/stdc++/x86_64" +
+ Triple.substr(5));
+ else
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/stdc++/" +
+ Triple);
+ break;
+ }
+}
+
+void Bitrig::AddCXXStdlibLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ switch (GetCXXStdlibType(Args)) {
+ case ToolChain::CST_Libcxx:
+ CmdArgs.push_back("-lc++");
+ CmdArgs.push_back("-lcxxrt");
+ // Include supc++ to provide Unwind until provided by libcxx.
+ CmdArgs.push_back("-lgcc");
+ break;
+ case ToolChain::CST_Libstdcxx:
+ CmdArgs.push_back("-lstdc++");
+ break;
+ }
+}
+
+/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
+
+FreeBSD::FreeBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+
+ // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
+ // back to '/usr/lib' if it doesn't exist.
+ if ((Triple.getArch() == llvm::Triple::x86 ||
+ Triple.getArch() == llvm::Triple::ppc) &&
+ llvm::sys::fs::exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
+ getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
+ else
+ getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
+}
+
+Tool *FreeBSD::buildAssembler() const {
+ return new tools::freebsd::Assemble(*this);
+}
+
+Tool *FreeBSD::buildLinker() const {
+ return new tools::freebsd::Link(*this);
+}
+
+bool FreeBSD::UseSjLjExceptions() const {
+ // FreeBSD uses SjLj exceptions on ARM oabi.
+ switch (getTriple().getEnvironment()) {
+ case llvm::Triple::GNUEABI:
+ case llvm::Triple::EABI:
+ return false;
+
+ default:
+ return (getTriple().getArch() == llvm::Triple::arm ||
+ getTriple().getArch() == llvm::Triple::thumb);
+ }
+}
+
+/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly.
+
+NetBSD::NetBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+
+ if (getDriver().UseStdLib) {
+ // When targeting a 32-bit platform, try the special directory used on
+ // 64-bit hosts, and only fall back to the main library directory if that
+ // doesn't work.
+ // FIXME: It'd be nicer to test if this directory exists, but I'm not sure
+ // what all logic is needed to emulate the '=' prefix here.
+ if (Triple.getArch() == llvm::Triple::x86)
+ getFilePaths().push_back("=/usr/lib/i386");
+
+ getFilePaths().push_back("=/usr/lib");
+ }
+}
+
+Tool *NetBSD::buildAssembler() const {
+ return new tools::netbsd::Assemble(*this);
+}
+
+Tool *NetBSD::buildLinker() const {
+ return new tools::netbsd::Link(*this);
+}
+
+ToolChain::CXXStdlibType
+NetBSD::GetCXXStdlibType(const ArgList &Args) const {
+ if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value == "libstdc++")
+ return ToolChain::CST_Libstdcxx;
+ if (Value == "libc++")
+ return ToolChain::CST_Libcxx;
+
+ getDriver().Diag(diag::err_drv_invalid_stdlib_name)
+ << A->getAsString(Args);
+ }
+
+ return ToolChain::CST_Libstdcxx;
+}
+
+void NetBSD::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ switch (GetCXXStdlibType(DriverArgs)) {
+ case ToolChain::CST_Libcxx:
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/");
+ break;
+ case ToolChain::CST_Libstdcxx:
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/g++");
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/g++/backward");
+ break;
+ }
+}
+
+/// Minix - Minix tool chain which can call as(1) and ld(1) directly.
+
+Minix::Minix(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+}
+
+Tool *Minix::buildAssembler() const {
+ return new tools::minix::Assemble(*this);
+}
+
+Tool *Minix::buildLinker() const {
+ return new tools::minix::Link(*this);
+}
+
+/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly.
+
+AuroraUX::AuroraUX(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : Generic_GCC(D, Triple, Args) {
+
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+ getFilePaths().push_back("/usr/sfw/lib");
+ getFilePaths().push_back("/opt/gcc4/lib");
+ getFilePaths().push_back("/opt/gcc4/lib/gcc/i386-pc-solaris2.11/4.2.4");
+
+}
+
+Tool *AuroraUX::buildAssembler() const {
+ return new tools::auroraux::Assemble(*this);
+}
+
+Tool *AuroraUX::buildLinker() const {
+ return new tools::auroraux::Link(*this);
+}
+
+/// Solaris - Solaris tool chain which can call as(1) and ld(1) directly.
+
+Solaris::Solaris(const Driver &D, const llvm::Triple& Triple,
+ const ArgList &Args)
+ : Generic_GCC(D, Triple, Args) {
+
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+}
+
+Tool *Solaris::buildAssembler() const {
+ return new tools::solaris::Assemble(*this);
+}
+
+Tool *Solaris::buildLinker() const {
+ return new tools::solaris::Link(*this);
+}
+
+/// Distribution (very bare-bones at the moment).
+
+enum Distro {
+ ArchLinux,
+ DebianLenny,
+ DebianSqueeze,
+ DebianWheezy,
+ DebianJessie,
+ Exherbo,
+ RHEL4,
+ RHEL5,
+ RHEL6,
+ Fedora13,
+ Fedora14,
+ Fedora15,
+ Fedora16,
+ FedoraRawhide,
+ OpenSuse11_3,
+ OpenSuse11_4,
+ OpenSuse12_1,
+ OpenSuse12_2,
+ UbuntuHardy,
+ UbuntuIntrepid,
+ UbuntuJaunty,
+ UbuntuKarmic,
+ UbuntuLucid,
+ UbuntuMaverick,
+ UbuntuNatty,
+ UbuntuOneiric,
+ UbuntuPrecise,
+ UbuntuQuantal,
+ UbuntuRaring,
+ UnknownDistro
+};
+
+static bool IsRedhat(enum Distro Distro) {
+ return (Distro >= Fedora13 && Distro <= FedoraRawhide) ||
+ (Distro >= RHEL4 && Distro <= RHEL6);
+}
+
+static bool IsOpenSuse(enum Distro Distro) {
+ return Distro >= OpenSuse11_3 && Distro <= OpenSuse12_2;
+}
+
+static bool IsDebian(enum Distro Distro) {
+ return Distro >= DebianLenny && Distro <= DebianJessie;
+}
+
+static bool IsUbuntu(enum Distro Distro) {
+ return Distro >= UbuntuHardy && Distro <= UbuntuRaring;
+}
+
+static Distro DetectDistro(llvm::Triple::ArchType Arch) {
+ OwningPtr<llvm::MemoryBuffer> File;
+ if (!llvm::MemoryBuffer::getFile("/etc/lsb-release", File)) {
+ StringRef Data = File.get()->getBuffer();
+ SmallVector<StringRef, 8> Lines;
+ Data.split(Lines, "\n");
+ Distro Version = UnknownDistro;
+ for (unsigned i = 0, s = Lines.size(); i != s; ++i)
+ if (Version == UnknownDistro && Lines[i].startswith("DISTRIB_CODENAME="))
+ Version = llvm::StringSwitch<Distro>(Lines[i].substr(17))
+ .Case("hardy", UbuntuHardy)
+ .Case("intrepid", UbuntuIntrepid)
+ .Case("jaunty", UbuntuJaunty)
+ .Case("karmic", UbuntuKarmic)
+ .Case("lucid", UbuntuLucid)
+ .Case("maverick", UbuntuMaverick)
+ .Case("natty", UbuntuNatty)
+ .Case("oneiric", UbuntuOneiric)
+ .Case("precise", UbuntuPrecise)
+ .Case("quantal", UbuntuQuantal)
+ .Case("raring", UbuntuRaring)
+ .Default(UnknownDistro);
+ return Version;
+ }
+
+ if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) {
+ StringRef Data = File.get()->getBuffer();
+ if (Data.startswith("Fedora release 16"))
+ return Fedora16;
+ else if (Data.startswith("Fedora release 15"))
+ return Fedora15;
+ else if (Data.startswith("Fedora release 14"))
+ return Fedora14;
+ else if (Data.startswith("Fedora release 13"))
+ return Fedora13;
+ else if (Data.startswith("Fedora release") &&
+ Data.find("Rawhide") != StringRef::npos)
+ return FedoraRawhide;
+ else if (Data.startswith("Red Hat Enterprise Linux") &&
+ Data.find("release 6") != StringRef::npos)
+ return RHEL6;
+ else if ((Data.startswith("Red Hat Enterprise Linux") ||
+ Data.startswith("CentOS")) &&
+ Data.find("release 5") != StringRef::npos)
+ return RHEL5;
+ else if ((Data.startswith("Red Hat Enterprise Linux") ||
+ Data.startswith("CentOS")) &&
+ Data.find("release 4") != StringRef::npos)
+ return RHEL4;
+ return UnknownDistro;
+ }
+
+ if (!llvm::MemoryBuffer::getFile("/etc/debian_version", File)) {
+ StringRef Data = File.get()->getBuffer();
+ if (Data[0] == '5')
+ return DebianLenny;
+ else if (Data.startswith("squeeze/sid") || Data[0] == '6')
+ return DebianSqueeze;
+ else if (Data.startswith("wheezy/sid") || Data[0] == '7')
+ return DebianWheezy;
+ else if (Data.startswith("jessie/sid") || Data[0] == '8')
+ return DebianJessie;
+ return UnknownDistro;
+ }
+
+ if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File))
+ return llvm::StringSwitch<Distro>(File.get()->getBuffer())
+ .StartsWith("openSUSE 11.3", OpenSuse11_3)
+ .StartsWith("openSUSE 11.4", OpenSuse11_4)
+ .StartsWith("openSUSE 12.1", OpenSuse12_1)
+ .StartsWith("openSUSE 12.2", OpenSuse12_2)
+ .Default(UnknownDistro);
+
+ bool Exists;
+ if (!llvm::sys::fs::exists("/etc/exherbo-release", Exists) && Exists)
+ return Exherbo;
+
+ if (!llvm::sys::fs::exists("/etc/arch-release", Exists) && Exists)
+ return ArchLinux;
+
+ return UnknownDistro;
+}
+
+/// \brief Get our best guess at the multiarch triple for a target.
+///
+/// Debian-based systems are starting to use a multiarch setup where they use
+/// a target-triple directory in the library and header search paths.
+/// Unfortunately, this triple does not align with the vanilla target triple,
+/// so we provide a rough mapping here.
+static std::string getMultiarchTriple(const llvm::Triple TargetTriple,
+ StringRef SysRoot) {
+ // For most architectures, just use whatever we have rather than trying to be
+ // clever.
+ switch (TargetTriple.getArch()) {
+ default:
+ return TargetTriple.str();
+
+ // We use the existence of '/lib/<triple>' as a directory to detect some
+ // common linux triples that don't quite match the Clang triple for both
+ // 32-bit and 64-bit targets. Multiarch fixes its install triples to these
+ // regardless of what the actual target triple is.
+ case llvm::Triple::arm:
+ case llvm::Triple::thumb:
+ if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
+ if (llvm::sys::fs::exists(SysRoot + "/lib/arm-linux-gnueabihf"))
+ return "arm-linux-gnueabihf";
+ } else {
+ if (llvm::sys::fs::exists(SysRoot + "/lib/arm-linux-gnueabi"))
+ return "arm-linux-gnueabi";
+ }
+ return TargetTriple.str();
+ case llvm::Triple::x86:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/i386-linux-gnu"))
+ return "i386-linux-gnu";
+ return TargetTriple.str();
+ case llvm::Triple::x86_64:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/x86_64-linux-gnu"))
+ return "x86_64-linux-gnu";
+ return TargetTriple.str();
+ case llvm::Triple::aarch64:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/aarch64-linux-gnu"))
+ return "aarch64-linux-gnu";
+ case llvm::Triple::mips:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/mips-linux-gnu"))
+ return "mips-linux-gnu";
+ return TargetTriple.str();
+ case llvm::Triple::mipsel:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu"))
+ return "mipsel-linux-gnu";
+ return TargetTriple.str();
+ case llvm::Triple::ppc:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnuspe"))
+ return "powerpc-linux-gnuspe";
+ if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnu"))
+ return "powerpc-linux-gnu";
+ return TargetTriple.str();
+ case llvm::Triple::ppc64:
+ if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64-linux-gnu"))
+ return "powerpc64-linux-gnu";
+ return TargetTriple.str();
+ }
+}
+
+static void addPathIfExists(Twine Path, ToolChain::path_list &Paths) {
+ if (llvm::sys::fs::exists(Path)) Paths.push_back(Path.str());
+}
+
+static bool isMipsR2Arch(llvm::Triple::ArchType Arch,
+ const ArgList &Args) {
+ if (Arch != llvm::Triple::mips &&
+ Arch != llvm::Triple::mipsel)
+ return false;
+
+ Arg *A = Args.getLastArg(options::OPT_march_EQ,
+ options::OPT_mcpu_EQ,
+ options::OPT_mips_CPUs_Group);
+
+ if (!A)
+ return false;
+
+ if (A->getOption().matches(options::OPT_mips_CPUs_Group))
+ return A->getOption().matches(options::OPT_mips32r2);
+
+ return A->getValue() == StringRef("mips32r2");
+}
+
+static StringRef getMultilibDir(const llvm::Triple &Triple,
+ const ArgList &Args) {
+ if (!isMipsArch(Triple.getArch()))
+ return Triple.isArch32Bit() ? "lib32" : "lib64";
+
+ // lib32 directory has a special meaning on MIPS targets.
+ // It contains N32 ABI binaries. Use this folder if produce
+ // code for N32 ABI only.
+ if (hasMipsN32ABIArg(Args))
+ return "lib32";
+
+ return Triple.isArch32Bit() ? "lib" : "lib64";
+}
+
+Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+ llvm::Triple::ArchType Arch = Triple.getArch();
+ std::string SysRoot = computeSysRoot(Args);
+
+ // OpenSuse stores the linker with the compiler, add that to the search
+ // path.
+ ToolChain::path_list &PPaths = getProgramPaths();
+ PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
+ GCCInstallation.getTriple().str() + "/bin").str());
+
+ Linker = GetProgramPath("ld");
+
+ Distro Distro = DetectDistro(Arch);
+
+ if (IsOpenSuse(Distro) || IsUbuntu(Distro)) {
+ ExtraOpts.push_back("-z");
+ ExtraOpts.push_back("relro");
+ }
+
+ if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb)
+ ExtraOpts.push_back("-X");
+
+ const bool IsAndroid = Triple.getEnvironment() == llvm::Triple::Android;
+ const bool IsMips = isMipsArch(Arch);
+
+ if (IsMips && !SysRoot.empty())
+ ExtraOpts.push_back("--sysroot=" + SysRoot);
+
+ // Do not use 'gnu' hash style for Mips targets because .gnu.hash
+ // and the MIPS ABI require .dynsym to be sorted in different ways.
+ // .gnu.hash needs symbols to be grouped by hash code whereas the MIPS
+ // ABI requires a mapping between the GOT and the symbol table.
+ // Android loader does not support .gnu.hash.
+ if (!IsMips && !IsAndroid) {
+ if (IsRedhat(Distro) || IsOpenSuse(Distro) ||
+ (IsUbuntu(Distro) && Distro >= UbuntuMaverick))
+ ExtraOpts.push_back("--hash-style=gnu");
+
+ if (IsDebian(Distro) || IsOpenSuse(Distro) || Distro == UbuntuLucid ||
+ Distro == UbuntuJaunty || Distro == UbuntuKarmic)
+ ExtraOpts.push_back("--hash-style=both");
+ }
+
+ if (IsRedhat(Distro))
+ ExtraOpts.push_back("--no-add-needed");
+
+ if (Distro == DebianSqueeze || Distro == DebianWheezy ||
+ Distro == DebianJessie || IsOpenSuse(Distro) ||
+ (IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) ||
+ (IsUbuntu(Distro) && Distro >= UbuntuKarmic))
+ ExtraOpts.push_back("--build-id");
+
+ if (IsOpenSuse(Distro))
+ ExtraOpts.push_back("--enable-new-dtags");
+
+ // The selection of paths to try here is designed to match the patterns which
+ // the GCC driver itself uses, as this is part of the GCC-compatible driver.
+ // This was determined by running GCC in a fake filesystem, creating all
+ // possible permutations of these directories, and seeing which ones it added
+ // to the link paths.
+ path_list &Paths = getFilePaths();
+
+ const std::string Multilib = getMultilibDir(Triple, Args);
+ const std::string MultiarchTriple = getMultiarchTriple(Triple, SysRoot);
+
+ // Add the multilib suffixed paths where they are available.
+ if (GCCInstallation.isValid()) {
+ const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
+ const std::string &LibPath = GCCInstallation.getParentLibPath();
+
+ if (IsAndroid && isMipsR2Arch(Triple.getArch(), Args))
+ addPathIfExists(GCCInstallation.getInstallPath() +
+ GCCInstallation.getMultiarchSuffix() +
+ "/mips-r2",
+ Paths);
+ else
+ addPathIfExists((GCCInstallation.getInstallPath() +
+ GCCInstallation.getMultiarchSuffix()),
+ Paths);
+
+ // If the GCC installation we found is inside of the sysroot, we want to
+ // prefer libraries installed in the parent prefix of the GCC installation.
+ // It is important to *not* use these paths when the GCC installation is
+ // outside of the system root as that can pick up unintended libraries.
+ // This usually happens when there is an external cross compiler on the
+ // host system, and a more minimal sysroot available that is the target of
+ // the cross.
+ if (StringRef(LibPath).startswith(SysRoot)) {
+ addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib,
+ Paths);
+ addPathIfExists(LibPath + "/" + MultiarchTriple, Paths);
+ addPathIfExists(LibPath + "/../" + Multilib, Paths);
+ }
+ // On Android, libraries in the parent prefix of the GCC installation are
+ // preferred to the ones under sysroot.
+ if (IsAndroid) {
+ addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths);
+ }
+ // Sourcery CodeBench MIPS toolchain holds some libraries under
+ // the parent prefix of the GCC installation.
+ if (IsMips) {
+ std::string Suffix;
+ appendMipsTargetSuffix(Suffix, Arch, Args);
+ addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" +
+ Multilib + Suffix,
+ Paths);
+ }
+ }
+ addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths);
+ addPathIfExists(SysRoot + "/lib/../" + Multilib, Paths);
+ addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths);
+ addPathIfExists(SysRoot + "/usr/lib/../" + Multilib, Paths);
+
+ // Try walking via the GCC triple path in case of multiarch GCC
+ // installations with strange symlinks.
+ if (GCCInstallation.isValid())
+ addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() +
+ "/../../" + Multilib, Paths);
+
+ // Add the non-multilib suffixed paths (if potentially different).
+ if (GCCInstallation.isValid()) {
+ const std::string &LibPath = GCCInstallation.getParentLibPath();
+ const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
+ if (!GCCInstallation.getMultiarchSuffix().empty())
+ addPathIfExists(GCCInstallation.getInstallPath(), Paths);
+
+ if (StringRef(LibPath).startswith(SysRoot)) {
+ addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths);
+ addPathIfExists(LibPath, Paths);
+ }
+ }
+ addPathIfExists(SysRoot + "/lib", Paths);
+ addPathIfExists(SysRoot + "/usr/lib", Paths);
+
+ IsPIEDefault = SanitizerArgs(*this, Args).hasZeroBaseShadow();
+}
+
+bool Linux::HasNativeLLVMSupport() const {
+ return true;
+}
+
+Tool *Linux::buildLinker() const {
+ return new tools::gnutools::Link(*this);
+}
+
+Tool *Linux::buildAssembler() const {
+ return new tools::gnutools::Assemble(*this);
+}
+
+void Linux::addClangTargetOptions(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
+ bool UseInitArrayDefault
+ = V >= Generic_GCC::GCCVersion::Parse("4.7.0") ||
+ getTriple().getArch() == llvm::Triple::aarch64 ||
+ getTriple().getEnvironment() == llvm::Triple::Android;
+ if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
+ options::OPT_fno_use_init_array,
+ UseInitArrayDefault))
+ CC1Args.push_back("-fuse-init-array");
+}
+
+std::string Linux::computeSysRoot(const ArgList &Args) const {
+ if (!getDriver().SysRoot.empty())
+ return getDriver().SysRoot;
+
+ if (!GCCInstallation.isValid() || !isMipsArch(getTriple().getArch()))
+ return std::string();
+
+ std::string Path =
+ (GCCInstallation.getInstallPath() +
+ "/../../../../" + GCCInstallation.getTriple().str() + "/libc").str();
+ appendMipsTargetSuffix(Path, getTriple().getArch(), Args);
+
+ return llvm::sys::fs::exists(Path) ? Path : "";
+}
+
+void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ const Driver &D = getDriver();
+ std::string SysRoot = computeSysRoot(DriverArgs);
+
+ if (DriverArgs.hasArg(options::OPT_nostdinc))
+ return;
+
+ if (!DriverArgs.hasArg(options::OPT_nostdlibinc))
+ addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");
+
+ if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
+ llvm::sys::Path P(D.ResourceDir);
+ P.appendComponent("include");
+ addSystemInclude(DriverArgs, CC1Args, P.str());
+ }
+
+ 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 (SmallVectorImpl<StringRef>::iterator I = dirs.begin(), E = dirs.end();
+ I != E; ++I) {
+ StringRef Prefix = llvm::sys::path::is_absolute(*I) ? SysRoot : "";
+ addExternCSystemInclude(DriverArgs, CC1Args, Prefix + *I);
+ }
+ return;
+ }
+
+ // Lacking those, try to detect the correct set of system includes for the
+ // target triple.
+
+ // Sourcery CodeBench and modern FSF Mips toolchains put extern C
+ // system includes under three additional directories.
+ if (GCCInstallation.isValid() && isMipsArch(getTriple().getArch())) {
+ addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
+ GCCInstallation.getInstallPath() +
+ "/include");
+
+ addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
+ GCCInstallation.getInstallPath() +
+ "/../../../../" +
+ GCCInstallation.getTriple().str() +
+ "/libc/usr/include");
+ }
+
+ // 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 MIPSMultiarchIncludeDirs[] = {
+ "/usr/include/mips-linux-gnu"
+ };
+ const StringRef MIPSELMultiarchIncludeDirs[] = {
+ "/usr/include/mipsel-linux-gnu"
+ };
+ const StringRef PPCMultiarchIncludeDirs[] = {
+ "/usr/include/powerpc-linux-gnu"
+ };
+ const StringRef PPC64MultiarchIncludeDirs[] = {
+ "/usr/include/powerpc64-linux-gnu"
+ };
+ ArrayRef<StringRef> MultiarchIncludeDirs;
+ if (getTriple().getArch() == llvm::Triple::x86_64) {
+ MultiarchIncludeDirs = X86_64MultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::x86) {
+ MultiarchIncludeDirs = X86MultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::aarch64) {
+ MultiarchIncludeDirs = AArch64MultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::arm) {
+ if (getTriple().getEnvironment() == llvm::Triple::GNUEABIHF)
+ MultiarchIncludeDirs = ARMHFMultiarchIncludeDirs;
+ else
+ MultiarchIncludeDirs = ARMMultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::mips) {
+ MultiarchIncludeDirs = MIPSMultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::mipsel) {
+ MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::ppc) {
+ MultiarchIncludeDirs = PPCMultiarchIncludeDirs;
+ } else if (getTriple().getArch() == llvm::Triple::ppc64) {
+ MultiarchIncludeDirs = PPC64MultiarchIncludeDirs;
+ }
+ for (ArrayRef<StringRef>::iterator I = MultiarchIncludeDirs.begin(),
+ E = MultiarchIncludeDirs.end();
+ I != E; ++I) {
+ if (llvm::sys::fs::exists(SysRoot + *I)) {
+ addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + *I);
+ 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");
+}
+
+/// \brief Helper to add the three variant paths for a libstdc++ installation.
+/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir,
+ const ArgList &DriverArgs,
+ ArgStringList &CC1Args) {
+ if (!llvm::sys::fs::exists(Base))
+ return false;
+ addSystemInclude(DriverArgs, CC1Args, Base);
+ addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir);
+ addSystemInclude(DriverArgs, CC1Args, Base + "/backward");
+ return true;
+}
+
+/// \brief Helper to add an extra variant path for an (Ubuntu) multilib
+/// libstdc++ installation.
+/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine Suffix,
+ Twine TargetArchDir,
+ Twine MultiLibSuffix,
+ const ArgList &DriverArgs,
+ ArgStringList &CC1Args) {
+ if (!addLibStdCXXIncludePaths(Base+Suffix, TargetArchDir + MultiLibSuffix,
+ DriverArgs, CC1Args))
+ return false;
+
+ addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir + Suffix
+ + MultiLibSuffix);
+ return true;
+}
+
+void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ // Check if libc++ has been enabled and provide its include paths if so.
+ if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) {
+ // libc++ is always installed at a fixed path on Linux currently.
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/usr/include/c++/v1");
+ return;
+ }
+
+ // We need a detected GCC installation on Linux to provide libstdc++'s
+ // headers. We handled the libc++ case above.
+ if (!GCCInstallation.isValid())
+ return;
+
+ // By default, look for the C++ headers in an include directory adjacent to
+ // the lib directory of the GCC installation. Note that this is expect to be
+ // equivalent to '/usr/include/c++/X.Y' in almost all cases.
+ StringRef LibDir = GCCInstallation.getParentLibPath();
+ StringRef InstallDir = GCCInstallation.getInstallPath();
+ StringRef Version = GCCInstallation.getVersion().Text;
+ StringRef TripleStr = GCCInstallation.getTriple().str();
+
+ if (addLibStdCXXIncludePaths(LibDir.str() + "/../include",
+ "/c++/" + Version.str(),
+ TripleStr,
+ GCCInstallation.getMultiarchSuffix(),
+ DriverArgs, CC1Args))
+ return;
+
+ const std::string IncludePathCandidates[] = {
+ // Gentoo is weird and places its headers inside the GCC install, so if the
+ // first attempt to find the headers fails, try this pattern.
+ InstallDir.str() + "/include/g++-v4",
+ // Android standalone toolchain has C++ headers in yet another place.
+ LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.str(),
+ // Freescale SDK C++ headers are directly in <sysroot>/usr/include/c++,
+ // without a subdirectory corresponding to the gcc version.
+ LibDir.str() + "/../include/c++",
+ };
+
+ for (unsigned i = 0; i < llvm::array_lengthof(IncludePathCandidates); ++i) {
+ if (addLibStdCXXIncludePaths(IncludePathCandidates[i], (TripleStr +
+ GCCInstallation.getMultiarchSuffix()),
+ DriverArgs, CC1Args))
+ break;
+ }
+}
+
+bool Linux::isPIEDefault() const {
+ return IsPIEDefault;
+}
+
+/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
+
+DragonFly::DragonFly(const Driver &D, const llvm::Triple& Triple, const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+
+ // Path mangling to find libexec
+ getProgramPaths().push_back(getDriver().getInstalledDir());
+ if (getDriver().getInstalledDir() != getDriver().Dir)
+ getProgramPaths().push_back(getDriver().Dir);
+
+ getFilePaths().push_back(getDriver().Dir + "/../lib");
+ getFilePaths().push_back("/usr/lib");
+ if (llvm::sys::fs::exists("/usr/lib/gcc47"))
+ getFilePaths().push_back("/usr/lib/gcc47");
+ else
+ getFilePaths().push_back("/usr/lib/gcc44");
+}
+
+Tool *DragonFly::buildAssembler() const {
+ return new tools::dragonfly::Assemble(*this);
+}
+
+Tool *DragonFly::buildLinker() const {
+ return new tools::dragonfly::Link(*this);
+}
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