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llvm-project/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 "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/Version.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/SanitizerArgs.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/OptTable.h"
#include "llvm/Option/Option.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;
using namespace llvm::opt;
/// 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")
.Cases("armv8", "armv8a", "armv8-a", "armv8")
.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-a5", "cortex-a7", "cortex-a8", "armv7")
.Cases("cortex-a9", "cortex-a12", "cortex-a15", "armv7")
.Cases("cortex-r4", "cortex-r5", "armv7r")
.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");
SmallString<128> P(getDriver().ClangExecutable);
llvm::sys::path::remove_filename(P); // 'clang'
llvm::sys::path::remove_filename(P); // 'bin'
llvm::sys::path::append(P, "lib", "arc", "libarclite_");
// Mash in the platform.
if (isTargetIOSSimulator())
P += "iphonesimulator";
else if (isTargetIPhoneOS())
P += "iphoneos";
else
P += "macosx";
P += ".a";
CmdArgs.push_back(Args.MakeArgString(P));
}
void DarwinClang::AddLinkRuntimeLib(const ArgList &Args,
ArgStringList &CmdArgs,
const char *DarwinStaticLib,
bool AlwaysLink) const {
SmallString<128> P(getDriver().ResourceDir);
llvm::sys::path::append(P, "lib", "darwin", 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).
if (AlwaysLink || llvm::sys::fs::exists(P.str()))
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");
}
}
const SanitizerArgs &Sanitize = getDriver().getOrParseSanitizerArgs(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)) {
// The ASAN runtime library requires C++.
AddCXXStdlibLibArgs(Args, CmdArgs);
}
AddLinkRuntimeLib(Args, CmdArgs,
"libclang_rt.asan_osx_dynamic.dylib", true);
}
}
// 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.
if (!llvm::sys::fs::exists(A->getValue()))
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.
if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) {
SmallString<128> P(A->getValue());
llvm::sys::path::append(P, "usr", "lib", "libstdc++.dylib");
if (!llvm::sys::fs::exists(P.str())) {
llvm::sys::path::remove_filename(P);
llvm::sys::path::append(P, "libstdc++.6.dylib");
if (llvm::sys::fs::exists(P.str())) {
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") &&
llvm::sys::fs::exists("/usr/lib/libstdc++.6.dylib")) {
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).
SmallString<128> P(getDriver().ResourceDir);
llvm::sys::path::append(P, "lib", "darwin");
// Use the newer cc_kext for iOS ARM after 6.0.
if (!isTargetIPhoneOS() || isTargetIOSSimulator() ||
!isIPhoneOSVersionLT(6, 0)) {
llvm::sys::path::append(P, "libclang_rt.cc_kext.a");
} else {
llvm::sys::path::append(P, "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.
if (llvm::sys::fs::exists(P.str()))
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" || Name == "ppc64le")
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;
GoodVersion.MajorStr = First.first.str();
if (Second.first.getAsInteger(10, GoodVersion.Minor) ||
GoodVersion.Minor < 0)
return BadVersion;
GoodVersion.MinorStr = Second.first.str();
// 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);
}
}
return GoodVersion;
}
/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering.
bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
int RHSPatch,
StringRef RHSPatchSuffix) const {
if (Major != RHSMajor)
return Major < RHSMajor;
if (Minor != RHSMinor)
return Minor < RHSMinor;
if (Patch != RHSPatch) {
// Note that versions without a specified patch sort higher than those with
// a patch.
if (RHSPatch == -1)
return true;
if (Patch == -1)
return false;
// Otherwise just sort on the patch itself.
return Patch < RHSPatch;
}
if (PatchSuffix != RHSPatchSuffix) {
// Sort empty suffixes higher.
if (RHSPatchSuffix.empty())
return true;
if (PatchSuffix.empty())
return false;
// Provide a lexicographic sort to make this a total ordering.
return PatchSuffix < RHSPatchSuffix;
}
// 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 BiarchVariantTriple =
TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant()
: TargetTriple.get32BitArchVariant();
llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
// The library directories which may contain GCC installations.
SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
// The compatible GCC triples for this particular architecture.
SmallVector<StringRef, 10> CandidateTripleAliases;
SmallVector<StringRef, 10> CandidateBiarchTripleAliases;
CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
CandidateTripleAliases, CandidateBiarchLibDirs,
CandidateBiarchTripleAliases);
// 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 {
// If we have a SysRoot, try that first.
if (!D.SysRoot.empty()) {
Prefixes.push_back(D.SysRoot);
Prefixes.push_back(D.SysRoot + "/usr");
}
// Then look for gcc installed alongside clang.
Prefixes.push_back(D.InstalledDir + "/..");
// And finally in /usr.
if (D.SysRoot.empty())
Prefixes.push_back("/usr");
}
// 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 = CandidateBiarchLibDirs.size(); j < je; ++j) {
const std::string LibDir = Prefixes[i] + CandidateBiarchLibDirs[j].str();
if (!llvm::sys::fs::exists(LibDir))
continue;
for (unsigned k = 0, ke = CandidateBiarchTripleAliases.size(); k < ke;
++k)
ScanLibDirForGCCTriple(TargetArch, Args, LibDir,
CandidateBiarchTripleAliases[k],
/*NeedsBiarchSuffix=*/ true);
}
}
}
void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
for (std::set<std::string>::const_iterator
I = CandidateGCCInstallPaths.begin(),
E = CandidateGCCInstallPaths.end();
I != E; ++I)
OS << "Found candidate GCC installation: " << *I << "\n";
OS << "Selected GCC installation: " << GCCInstallPath << "\n";
}
/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
SmallVectorImpl<StringRef> &LibDirs,
SmallVectorImpl<StringRef> &TripleAliases,
SmallVectorImpl<StringRef> &BiarchLibDirs,
SmallVectorImpl<StringRef> &BiarchTripleAliases) {
// 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 PPC64LELibDirs[] = { "/lib64", "/lib" };
static const char *const PPC64LETriples[] = { "powerpc64le-linux-gnu",
"powerpc64le-unknown-linux-gnu",
"powerpc64le-suse-linux",
"ppc64le-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));
BiarchLibDirs.append(AArch64LibDirs,
AArch64LibDirs + llvm::array_lengthof(AArch64LibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(X86LibDirs,
X86LibDirs + llvm::array_lengthof(X86LibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(X86_64LibDirs,
X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(MIPS64LibDirs,
MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(
MIPS64ELLibDirs,
MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(MIPSLibDirs,
MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(MIPSELLibDirs,
MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(PPC64LibDirs,
PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs));
BiarchTripleAliases.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));
BiarchLibDirs.append(PPCLibDirs,
PPCLibDirs + llvm::array_lengthof(PPCLibDirs));
BiarchTripleAliases.append(PPCTriples,
PPCTriples + llvm::array_lengthof(PPCTriples));
break;
case llvm::Triple::ppc64le:
LibDirs.append(PPC64LELibDirs,
PPC64LELibDirs + llvm::array_lengthof(PPC64LELibDirs));
TripleAliases.append(PPC64LETriples,
PPC64LETriples + llvm::array_lengthof(PPC64LETriples));
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() != BiarchTriple.str())
BiarchTripleAliases.push_back(BiarchTriple.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 findTargetBiarchSuffix(std::string &Suffix, StringRef Path,
llvm::Triple::ArchType TargetArch,
const ArgList &Args) {
// FIXME: This routine was only intended to model bi-arch toolchains which
// use -m32 and -m64 to swap between variants of a target. It shouldn't be
// doing ABI-based builtin location for MIPS.
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 NeedsBiarchSuffix) {
// 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(),
// Debian puts cross-compilers in gcc-cross
"/gcc-cross/" + 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[] = {
"/../../..", // gcc/
"/../../..", // gcc-cross/
"/../../../..", // <triple>/gcc/
"/../..", // <triple>/
"/../../../.." // i386-linux-gnu/gcc/<triple>/
};
// 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);
if (CandidateVersion.Major != -1) // Filter obviously bad entries.
if (!CandidateGCCInstallPaths.insert(LI->path()).second)
continue; // Saw this path before; no need to look at it again.
if (CandidateVersion.isOlderThan(4, 1, 1))
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 biarch triple alias, we look for
// crtbegin.o without the subdirectory.
std::string BiarchSuffix;
if (findTargetBiarchSuffix(BiarchSuffix, LI->path(), TargetArch, Args)) {
GCCBiarchSuffix = BiarchSuffix;
} else {
if (NeedsBiarchSuffix ||
!llvm::sys::fs::exists(LI->path() + "/crtbegin.o"))
continue;
GCCBiarchSuffix.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);
}
void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
// Print the information about how we detected the GCC installation.
GCCInstallation.print(OS);
}
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;
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());
SmallString<128> IncludeDir(Hexagon_TC::GetGnuDir(D.InstalledDir));
llvm::sys::path::append(IncludeDir, "hexagon/include/c++/");
llvm::sys::path::append(IncludeDir, 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 int getHexagonVersion(const ArgList &Args) {
Arg *A = Args.getLastArg(options::OPT_march_EQ, options::OPT_mcpu_EQ);
// Select the default CPU (v4) if none was given.
if (!A)
return 4;
// FIXME: produce errors if we cannot parse the version.
StringRef WhichHexagon = A->getValue();
if (WhichHexagon.startswith("hexagonv")) {
int Val;
if (!WhichHexagon.substr(sizeof("hexagonv") - 1).getAsInteger(10, Val))
return Val;
}
if (WhichHexagon.startswith("v")) {
int Val;
if (!WhichHexagon.substr(1).getAsInteger(10, Val))
return Val;
}
// FIXME: should probably be an error.
return 4;
}
StringRef Hexagon_TC::GetTargetCPU(const ArgList &Args)
{
int V = getHexagonVersion(Args);
// FIXME: We don't support versions < 4. We should error on them.
switch (V) {
default:
llvm_unreachable("Unexpected version");
case 5:
return "v5";
case 4:
return "v4";
case 3:
return "v3";
case 2:
return "v2";
case 1:
return "v1";
}
}
// 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,
OpenSUSE,
UbuntuHardy,
UbuntuIntrepid,
UbuntuJaunty,
UbuntuKarmic,
UbuntuLucid,
UbuntuMaverick,
UbuntuNatty,
UbuntuOneiric,
UbuntuPrecise,
UbuntuQuantal,
UbuntuRaring,
UbuntuSaucy,
UnknownDistro
};
static bool IsRedhat(enum Distro Distro) {
return (Distro >= Fedora13 && Distro <= FedoraRawhide) ||
(Distro >= RHEL4 && Distro <= RHEL6);
}
static bool IsOpenSUSE(enum Distro Distro) {
return Distro == OpenSUSE;
}
static bool IsDebian(enum Distro Distro) {
return Distro >= DebianLenny && Distro <= DebianJessie;
}
static bool IsUbuntu(enum Distro Distro) {
return Distro >= UbuntuHardy && Distro <= UbuntuSaucy;
}
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)
.Case("saucy", UbuntuSaucy)
.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::sys::fs::exists("/etc/SuSE-release"))
return OpenSUSE;
if (llvm::sys::fs::exists("/etc/exherbo-release"))
return Exherbo;
if (llvm::sys::fs::exists("/etc/arch-release"))
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";
return TargetTriple.str();
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";
case llvm::Triple::ppc64le:
if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64le-linux-gnu"))
return "powerpc64le-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);
// Cross-compiling binutils and GCC installations (vanilla and openSUSE at
// least) put various tools in a triple-prefixed directory off of the parent
// of the GCC installation. We use the GCC triple here to ensure that we end
// up with tools that support the same amount of cross compiling as the
// detected GCC installation. For example, if we find a GCC installation
// targeting x86_64, but it is a bi-arch GCC installation, it can also be
// used to target i386.
// FIXME: This seems unlikely to be Linux-specific.
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.getBiarchSuffix() + "/mips-r2",
Paths);
else
addPathIfExists((GCCInstallation.getInstallPath() +
GCCInstallation.getBiarchSuffix()),
Paths);
// Sourcery CodeBench MIPS toolchain holds some libraries under
// the parent prefix of the GCC installation.
// FIXME: It would be cleaner to model this as a variant of multilib. IE,
// instead of 'lib64' it would be 'lib/el'.
std::string MultilibSuffix;
appendMipsTargetSuffix(MultilibSuffix, Arch, Args);
// GCC cross compiling toolchains will install target libraries which ship
// as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
// any part of the GCC installation in
// <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
// debatable, but is the reality today. We need to search this tree even
// when we have a sysroot somewhere else. It is the responsibility of
// whomever is doing the cross build targetting a sysroot using a GCC
// installation that is *not* within the system root to ensure two things:
//
// 1) Any DSOs that are linked in from this tree or from the install path
// above must be preasant on the system root and found via an
// appropriate rpath.
// 2) There must not be libraries installed into
// <prefix>/<triple>/<libdir> unless they should be preferred over
// those within the system root.
//
// Note that this matches the GCC behavior. See the below comment for where
// Clang diverges from GCC's behavior.
addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib +
MultilibSuffix,
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. Note that GCC does include some of these directories in some
// configurations but this seems somewhere between questionable and simply
// a bug.
if (StringRef(LibPath).startswith(SysRoot)) {
addPathIfExists(LibPath + "/" + MultiarchTriple, Paths);
addPathIfExists(LibPath + "/../" + Multilib, 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 biarch or 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.getBiarchSuffix().empty())
addPathIfExists(GCCInstallation.getInstallPath(), Paths);
// See comments above on the multilib variant for details of why this is
// included even from outside the sysroot.
addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths);
// See comments above on the multilib variant for details of why this is
// only included from within the sysroot.
if (StringRef(LibPath).startswith(SysRoot))
addPathIfExists(LibPath, Paths);
}
addPathIfExists(SysRoot + "/lib", Paths);
addPathIfExists(SysRoot + "/usr/lib", Paths);
}
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.isOlderThan(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)) {
SmallString<128> P(D.ResourceDir);
llvm::sys::path::append(P, "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 TripleStr = GCCInstallation.getTriple().str();
const GCCVersion &Version = GCCInstallation.getVersion();
if (addLibStdCXXIncludePaths(
LibDir.str() + "/../include", "/c++/" + Version.Text, TripleStr,
GCCInstallation.getBiarchSuffix(), 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 these patterns.
InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
Version.MinorStr,
InstallDir.str() + "/include/g++-v" + Version.MajorStr,
// 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++",
};
for (unsigned i = 0; i < llvm::array_lengthof(IncludePathCandidates); ++i) {
if (addLibStdCXXIncludePaths(
IncludePathCandidates[i],
(TripleStr + GCCInstallation.getBiarchSuffix()), DriverArgs,
CC1Args))
break;
}
}
bool Linux::isPIEDefault() const {
return getSanitizerArgs().hasZeroBaseShadow(*this);
}
/// 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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