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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"
#ifdef HAVE_CLANG_CONFIG_H
# include "clang/Config/config.h"
#endif
#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/HostInfo.h"
#include "clang/Driver/ObjCRuntime.h"
#include "clang/Driver/OptTable.h"
#include "clang/Driver/Option.h"
#include "clang/Driver/Options.h"
#include "clang/Basic/Version.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/system_error.h"
#include <cstdlib> // ::getenv
#include "llvm/Config/config.h" // for CXX_INCLUDE_ROOT
using namespace clang::driver;
using namespace clang::driver::toolchains;
using namespace clang;
/// Darwin - Darwin tool chain for i386 and x86_64.
Darwin::Darwin(const HostInfo &Host, const llvm::Triple& Triple)
: ToolChain(Host, Triple), TargetInitialized(false),
ARCRuntimeForSimulator(ARCSimulator_None),
LibCXXForSimulator(LibCXXSimulator_None)
{
// Compute the initial Darwin version based on the host.
bool HadExtra;
std::string OSName = Triple.getOSName();
if (!Driver::GetReleaseVersion(&OSName.c_str()[6],
DarwinVersion[0], DarwinVersion[1],
DarwinVersion[2], HadExtra))
getDriver().Diag(diag::err_drv_invalid_darwin_version) << OSName;
llvm::raw_string_ostream(MacosxVersionMin)
<< "10." << std::max(0, (int)DarwinVersion[0] - 4) << '.'
<< DarwinVersion[1];
}
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;
}
bool Darwin::hasARCRuntime() const {
// FIXME: Remove this once there is a proper way to detect an ARC runtime
// for the simulator.
switch (ARCRuntimeForSimulator) {
case ARCSimulator_None:
break;
case ARCSimulator_HasARCRuntime:
return true;
case ARCSimulator_NoARCRuntime:
return false;
}
if (isTargetIPhoneOS())
return !isIPhoneOSVersionLT(5);
else
return !isMacosxVersionLT(10, 7);
}
/// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0.
void Darwin::configureObjCRuntime(ObjCRuntime &runtime) const {
if (runtime.getKind() != ObjCRuntime::NeXT)
return ToolChain::configureObjCRuntime(runtime);
runtime.HasARC = runtime.HasWeak = hasARCRuntime();
// So far, objc_terminate is only available in iOS 5.
// FIXME: do the simulator logic properly.
if (!ARCRuntimeForSimulator && isTargetIPhoneOS())
runtime.HasTerminate = !isIPhoneOSVersionLT(5);
else
runtime.HasTerminate = false;
}
/// 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("armv5tej", "armv5")
.Case("xscale", "xscale")
.Case("armv4t", "armv4t")
.Case("armv7", "armv7")
.Cases("armv7a", "armv7-a", "armv7")
.Cases("armv7r", "armv7-r", "armv7")
.Cases("armv7m", "armv7-m", "armv7")
.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", "cortex-m0", "armv6")
.Cases("cortex-a8", "cortex-r4", "cortex-m3", "cortex-a9", "armv7")
.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(Args)))
return Arch;
if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
if (const char *Arch = GetArmArchForMCpu(A->getValue(Args)))
return Arch;
return "arm";
}
}
}
Darwin::~Darwin() {
// Free tool implementations.
for (llvm::DenseMap<unsigned, Tool*>::iterator
it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
delete it->second;
}
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();
unsigned Version[3];
getTargetVersion(Version);
llvm::SmallString<16> Str;
llvm::raw_svector_ostream(Str)
<< (isTargetIPhoneOS() ? "ios" : "macosx")
<< Version[0] << "." << Version[1] << "." << Version[2];
Triple.setOSName(Str.str());
return Triple.getTriple();
}
Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) {
// Fallback to llvm-gcc for i386 kext compiles, we don't support that ABI.
if (Inputs.size() == 1 &&
types::isCXX(Inputs[0]->getType()) &&
getTriple().isOSDarwin() &&
getTriple().getArch() == llvm::Triple::x86 &&
(C.getArgs().getLastArg(options::OPT_fapple_kext) ||
C.getArgs().getLastArg(options::OPT_mkernel)))
Key = JA.getKind();
else
Key = Action::AnalyzeJobClass;
} else
Key = JA.getKind();
// FIXME: This doesn't belong here, but ideally we will support static soon
// anyway.
bool HasStatic = (C.getArgs().hasArg(options::OPT_mkernel) ||
C.getArgs().hasArg(options::OPT_static) ||
C.getArgs().hasArg(options::OPT_fapple_kext));
bool IsIADefault = IsIntegratedAssemblerDefault() && !HasStatic;
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIADefault);
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::InputClass:
case Action::BindArchClass:
llvm_unreachable("Invalid tool kind.");
case Action::PreprocessJobClass:
T = new tools::darwin::Preprocess(*this); break;
case Action::AnalyzeJobClass:
T = new tools::Clang(*this); break;
case Action::PrecompileJobClass:
case Action::CompileJobClass:
T = new tools::darwin::Compile(*this); break;
case Action::AssembleJobClass: {
if (UseIntegratedAs)
T = new tools::ClangAs(*this);
else
T = new tools::darwin::Assemble(*this);
break;
}
case Action::LinkJobClass:
T = new tools::darwin::Link(*this); break;
case Action::LipoJobClass:
T = new tools::darwin::Lipo(*this); break;
case Action::DsymutilJobClass:
T = new tools::darwin::Dsymutil(*this); break;
case Action::VerifyJobClass:
T = new tools::darwin::VerifyDebug(*this); break;
}
}
return *T;
}
DarwinClang::DarwinClang(const HostInfo &Host, const llvm::Triple& Triple)
: Darwin(Host, Triple)
{
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);
// For fallback, we need to know how to find the GCC cc1 executables, so we
// also add the GCC libexec paths. This is legacy code that can be removed
// once fallback is no longer useful.
AddGCCLibexecPath(DarwinVersion[0]);
AddGCCLibexecPath(DarwinVersion[0] - 2);
AddGCCLibexecPath(DarwinVersion[0] - 1);
AddGCCLibexecPath(DarwinVersion[0] + 1);
AddGCCLibexecPath(DarwinVersion[0] + 2);
}
void DarwinClang::AddGCCLibexecPath(unsigned darwinVersion) {
std::string ToolChainDir = "i686-apple-darwin";
ToolChainDir += llvm::utostr(darwinVersion);
ToolChainDir += "/4.2.1";
std::string Path = getDriver().Dir;
Path += "/../llvm-gcc-4.2/libexec/gcc/";
Path += ToolChainDir;
getProgramPaths().push_back(Path);
Path = "/usr/llvm-gcc-4.2/libexec/gcc/";
Path += ToolChainDir;
getProgramPaths().push_back(Path);
}
void DarwinClang::AddLinkSearchPathArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
// The Clang toolchain uses explicit paths for internal libraries.
// Unfortunately, we still might depend on a few of the libraries that are
// only available in the gcc library directory (in particular
// libstdc++.dylib). For now, hardcode the path to the known install location.
llvm::sys::Path P(getDriver().Dir);
P.eraseComponent(); // .../usr/bin -> ../usr
P.appendComponent("lib");
P.appendComponent("gcc");
switch (getTriple().getArch()) {
default:
llvm_unreachable("Invalid Darwin arch!");
case llvm::Triple::x86:
case llvm::Triple::x86_64:
P.appendComponent("i686-apple-darwin10");
break;
case llvm::Triple::arm:
case llvm::Triple::thumb:
P.appendComponent("arm-apple-darwin10");
break;
case llvm::Triple::ppc:
case llvm::Triple::ppc64:
P.appendComponent("powerpc-apple-darwin10");
break;
}
P.appendComponent("4.2.1");
// Determine the arch specific GCC subdirectory.
const char *ArchSpecificDir = 0;
switch (getTriple().getArch()) {
default:
break;
case llvm::Triple::arm:
case llvm::Triple::thumb: {
std::string Triple = ComputeLLVMTriple(Args);
StringRef TripleStr = Triple;
if (TripleStr.startswith("armv5") || TripleStr.startswith("thumbv5"))
ArchSpecificDir = "v5";
else if (TripleStr.startswith("armv6") || TripleStr.startswith("thumbv6"))
ArchSpecificDir = "v6";
else if (TripleStr.startswith("armv7") || TripleStr.startswith("thumbv7"))
ArchSpecificDir = "v7";
break;
}
case llvm::Triple::ppc64:
ArchSpecificDir = "ppc64";
break;
case llvm::Triple::x86_64:
ArchSpecificDir = "x86_64";
break;
}
if (ArchSpecificDir) {
P.appendComponent(ArchSpecificDir);
bool Exists;
if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
CmdArgs.push_back(Args.MakeArgString("-L" + P.str()));
P.eraseComponent();
}
bool Exists;
if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
CmdArgs.push_back(Args.MakeArgString("-L" + P.str()));
}
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";
// FIXME: Remove this once we depend fully on -mios-simulator-version-min.
else if (ARCRuntimeForSimulator != ARCSimulator_None)
s += "iphonesimulator";
else
s += "macosx";
s += ".a";
CmdArgs.push_back(Args.MakeArgString(s));
}
void DarwinClang::AddLinkRuntimeLib(const ArgList &Args,
ArgStringList &CmdArgs,
const char *DarwinStaticLib) 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.
bool Exists;
if (!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 doesn't support real static executables, don't link any runtime
// libraries with -static.
if (Args.hasArg(options::OPT_static))
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;
}
// 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");
}
}
}
static inline StringRef SimulatorVersionDefineName() {
return "__IPHONE_OS_VERSION_MIN_REQUIRED";
}
/// \brief Parse the simulator version define:
/// __IPHONE_OS_VERSION_MIN_REQUIRED=([0-9])([0-9][0-9])([0-9][0-9])
// and return the grouped values as integers, e.g:
// __IPHONE_OS_VERSION_MIN_REQUIRED=40201
// will return Major=4, Minor=2, Micro=1.
static bool GetVersionFromSimulatorDefine(StringRef define,
unsigned &Major, unsigned &Minor,
unsigned &Micro) {
assert(define.startswith(SimulatorVersionDefineName()));
StringRef name, version;
llvm::tie(name, version) = define.split('=');
if (version.empty())
return false;
std::string verstr = version.str();
char *end;
unsigned num = (unsigned) strtol(verstr.c_str(), &end, 10);
if (*end != '\0')
return false;
Major = num / 10000;
num = num % 10000;
Minor = num / 100;
Micro = num % 100;
return true;
}
void Darwin::AddDeploymentTarget(DerivedArgList &Args) const {
const OptTable &Opts = getDriver().getOpts();
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);
// FIXME: HACK! When compiling for the simulator we don't get a
// '-miphoneos-version-min' to help us know whether there is an ARC runtime
// or not; try to parse a __IPHONE_OS_VERSION_MIN_REQUIRED
// define passed in command-line.
if (!iOSVersion && !iOSSimVersion) {
for (arg_iterator it = Args.filtered_begin(options::OPT_D),
ie = Args.filtered_end(); it != ie; ++it) {
StringRef define = (*it)->getValue(Args);
if (define.startswith(SimulatorVersionDefineName())) {
unsigned Major = 0, Minor = 0, Micro = 0;
if (GetVersionFromSimulatorDefine(define, Major, Minor, Micro) &&
Major < 10 && Minor < 100 && Micro < 100) {
ARCRuntimeForSimulator = Major < 5 ? ARCSimulator_NoARCRuntime
: ARCSimulator_HasARCRuntime;
LibCXXForSimulator = Major < 5 ? LibCXXSimulator_NotAvailable
: LibCXXSimulator_Available;
}
break;
}
}
}
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(Args);
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())
if (getDarwinArchName(Args) == "armv7")
iOSTarget = "0.0";
// 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(Args), 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(Args), 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(Args));
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.
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");
P.appendComponent("libclang_rt.cc_kext.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.
//
// FIXME: Canonicalize name.
StringRef XarchArch = A->getValue(Args, 0);
if (!(XarchArch == getArchName() ||
(BoundArch && XarchArch == BoundArch)))
continue;
Arg *OriginalArg = A;
unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(Args, 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().isDriverOption()) {
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().isLinkerInput()) {
// 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(Args, 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(Args));
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 == "armv7")
DAL->AddJoinedArg(0, MArch, "armv7a");
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.
AddDeploymentTarget(*DAL);
// Validate the C++ standard library choice.
CXXStdlibType Type = GetCXXStdlibType(*DAL);
if (Type == ToolChain::CST_Libcxx) {
switch (LibCXXForSimulator) {
case LibCXXSimulator_None:
// Handle non-simulator cases.
if (isTargetIPhoneOS()) {
if (isIPhoneOSVersionLT(5, 0)) {
getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment)
<< "iOS 5.0";
}
}
break;
case LibCXXSimulator_NotAvailable:
getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment)
<< "iOS 5.0";
break;
case LibCXXSimulator_Available:
break;
}
}
return DAL;
}
bool Darwin::IsUnwindTablesDefault() const {
// FIXME: Gross; we should probably have some separate target
// definition, possibly even reusing the one in clang.
return getArchName() == "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);
}
const char *Darwin::GetDefaultRelocationModel() const {
return "pic";
}
const char *Darwin::GetForcedPicModel() const {
if (getArchName() == "x86_64")
return "pic";
return 0;
}
bool Darwin::SupportsProfiling() const {
// Profiling instrumentation is only supported on x86.
return getArchName() == "i386" || getArchName() == "x86_64";
}
bool Darwin::SupportsObjCGC() const {
// Garbage collection is supported everywhere except on iPhone OS.
return !isTargetIPhoneOS();
}
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.
Generic_GCC::Generic_GCC(const HostInfo &Host, const llvm::Triple& Triple)
: ToolChain(Host, Triple) {
getProgramPaths().push_back(getDriver().getInstalledDir());
if (getDriver().getInstalledDir() != getDriver().Dir)
getProgramPaths().push_back(getDriver().Dir);
}
Generic_GCC::~Generic_GCC() {
// Free tool implementations.
for (llvm::DenseMap<unsigned, Tool*>::iterator
it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
delete it->second;
}
Tool &Generic_GCC::SelectTool(const Compilation &C,
const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::InputClass:
case Action::BindArchClass:
llvm_unreachable("Invalid tool kind.");
case Action::PreprocessJobClass:
T = new tools::gcc::Preprocess(*this); break;
case Action::PrecompileJobClass:
T = new tools::gcc::Precompile(*this); break;
case Action::AnalyzeJobClass:
T = new tools::Clang(*this); break;
case Action::CompileJobClass:
T = new tools::gcc::Compile(*this); break;
case Action::AssembleJobClass:
T = new tools::gcc::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::gcc::Link(*this); break;
// This is a bit ungeneric, but the only platform using a driver
// driver is Darwin.
case Action::LipoJobClass:
T = new tools::darwin::Lipo(*this); break;
case Action::DsymutilJobClass:
T = new tools::darwin::Dsymutil(*this); break;
case Action::VerifyJobClass:
T = new tools::darwin::VerifyDebug(*this); break;
}
}
return *T;
}
bool Generic_GCC::IsUnwindTablesDefault() const {
// FIXME: Gross; we should probably have some separate target
// definition, possibly even reusing the one in clang.
return getArchName() == "x86_64";
}
const char *Generic_GCC::GetDefaultRelocationModel() const {
return "static";
}
const char *Generic_GCC::GetForcedPicModel() const {
return 0;
}
/// 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 HostInfo &Host, const llvm::Triple& Triple)
: ToolChain(Host, Triple) {
// Path mangling to find libexec
std::string Path(getDriver().Dir);
Path += "/../libexec";
getProgramPaths().push_back(Path);
}
TCEToolChain::~TCEToolChain() {
for (llvm::DenseMap<unsigned, Tool*>::iterator
it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
delete it->second;
}
bool TCEToolChain::IsMathErrnoDefault() const {
return true;
}
bool TCEToolChain::IsUnwindTablesDefault() const {
return false;
}
const char *TCEToolChain::GetDefaultRelocationModel() const {
return "static";
}
const char *TCEToolChain::GetForcedPicModel() const {
return 0;
}
Tool &TCEToolChain::SelectTool(const Compilation &C,
const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
Key = Action::AnalyzeJobClass;
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::PreprocessJobClass:
T = new tools::gcc::Preprocess(*this); break;
case Action::AnalyzeJobClass:
T = new tools::Clang(*this); break;
default:
llvm_unreachable("Unsupported action for TCE target.");
}
}
return *T;
}
/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
OpenBSD::OpenBSD(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_ELF(Host, Triple) {
getFilePaths().push_back(getDriver().Dir + "/../lib");
getFilePaths().push_back("/usr/lib");
}
Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIntegratedAssemblerDefault());
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass: {
if (UseIntegratedAs)
T = new tools::ClangAs(*this);
else
T = new tools::openbsd::Assemble(*this);
break;
}
case Action::LinkJobClass:
T = new tools::openbsd::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
FreeBSD::FreeBSD(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_ELF(Host, Triple) {
// Determine if we are compiling 32-bit code on an x86_64 platform.
bool Lib32 = false;
if (Triple.getArch() == llvm::Triple::x86 &&
llvm::Triple(getDriver().DefaultHostTriple).getArch() ==
llvm::Triple::x86_64)
Lib32 = true;
if (Triple.getArch() == llvm::Triple::ppc &&
llvm::Triple(getDriver().DefaultHostTriple).getArch() ==
llvm::Triple::ppc64)
Lib32 = true;
if (Lib32) {
getFilePaths().push_back("/usr/lib32");
} else {
getFilePaths().push_back("/usr/lib");
}
}
Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIntegratedAssemblerDefault());
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
if (UseIntegratedAs)
T = new tools::ClangAs(*this);
else
T = new tools::freebsd::Assemble(*this);
break;
case Action::LinkJobClass:
T = new tools::freebsd::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly.
NetBSD::NetBSD(const HostInfo &Host, const llvm::Triple& Triple,
const llvm::Triple& ToolTriple)
: Generic_ELF(Host, Triple), ToolTriple(ToolTriple) {
// Determine if we are compiling 32-bit code on an x86_64 platform.
bool Lib32 = false;
if (ToolTriple.getArch() == llvm::Triple::x86_64 &&
Triple.getArch() == llvm::Triple::x86)
Lib32 = true;
if (getDriver().UseStdLib) {
if (Lib32)
getFilePaths().push_back("=/usr/lib/i386");
else
getFilePaths().push_back("=/usr/lib");
}
}
Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIntegratedAssemblerDefault());
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
if (UseIntegratedAs)
T = new tools::ClangAs(*this);
else
T = new tools::netbsd::Assemble(*this, ToolTriple);
break;
case Action::LinkJobClass:
T = new tools::netbsd::Link(*this, ToolTriple);
break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// Minix - Minix tool chain which can call as(1) and ld(1) directly.
Minix::Minix(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {
getFilePaths().push_back(getDriver().Dir + "/../lib");
getFilePaths().push_back("/usr/lib");
getFilePaths().push_back("/usr/gnu/lib");
getFilePaths().push_back("/usr/gnu/lib/gcc/i686-pc-minix/4.4.3");
}
Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
T = new tools::minix::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::minix::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly.
AuroraUX::AuroraUX(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {
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::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
T = new tools::auroraux::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::auroraux::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// Linux toolchain (very bare-bones at the moment).
enum LinuxDistro {
ArchLinux,
DebianLenny,
DebianSqueeze,
DebianWheezy,
Exherbo,
RHEL4,
RHEL5,
RHEL6,
Fedora13,
Fedora14,
Fedora15,
FedoraRawhide,
OpenSuse11_3,
OpenSuse11_4,
OpenSuse12_1,
UbuntuHardy,
UbuntuIntrepid,
UbuntuJaunty,
UbuntuKarmic,
UbuntuLucid,
UbuntuMaverick,
UbuntuNatty,
UbuntuOneiric,
UnknownDistro
};
static bool IsRedhat(enum LinuxDistro Distro) {
return Distro == Fedora13 || Distro == Fedora14 ||
Distro == Fedora15 || Distro == FedoraRawhide ||
Distro == RHEL4 || Distro == RHEL5 || Distro == RHEL6;
}
static bool IsOpenSuse(enum LinuxDistro Distro) {
return Distro == OpenSuse11_3 || Distro == OpenSuse11_4 ||
Distro == OpenSuse12_1;
}
static bool IsDebian(enum LinuxDistro Distro) {
return Distro == DebianLenny || Distro == DebianSqueeze ||
Distro == DebianWheezy;
}
static bool IsUbuntu(enum LinuxDistro Distro) {
return Distro == UbuntuHardy || Distro == UbuntuIntrepid ||
Distro == UbuntuLucid || Distro == UbuntuMaverick ||
Distro == UbuntuJaunty || Distro == UbuntuKarmic ||
Distro == UbuntuNatty || Distro == UbuntuOneiric;
}
// FIXME: This should be deleted. We should assume a multilib environment, and
// fallback gracefully if any parts of it are absent.
static bool HasMultilib(llvm::Triple::ArchType Arch, enum LinuxDistro Distro) {
if (Arch == llvm::Triple::x86_64) {
bool Exists;
if (Distro == Exherbo &&
(llvm::sys::fs::exists("/usr/lib32/libc.so", Exists) || !Exists))
return false;
}
return true;
}
static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) {
llvm::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");
for (unsigned int i = 0, s = Lines.size(); i < s; ++ i) {
if (Lines[i] == "DISTRIB_CODENAME=hardy")
return UbuntuHardy;
else if (Lines[i] == "DISTRIB_CODENAME=intrepid")
return UbuntuIntrepid;
else if (Lines[i] == "DISTRIB_CODENAME=jaunty")
return UbuntuJaunty;
else if (Lines[i] == "DISTRIB_CODENAME=karmic")
return UbuntuKarmic;
else if (Lines[i] == "DISTRIB_CODENAME=lucid")
return UbuntuLucid;
else if (Lines[i] == "DISTRIB_CODENAME=maverick")
return UbuntuMaverick;
else if (Lines[i] == "DISTRIB_CODENAME=natty")
return UbuntuNatty;
else if (Lines[i] == "DISTRIB_CODENAME=oneiric")
return UbuntuOneiric;
}
return UnknownDistro;
}
if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) {
StringRef Data = File.get()->getBuffer();
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"))
return DebianSqueeze;
else if (Data.startswith("wheezy/sid"))
return DebianWheezy;
return UnknownDistro;
}
if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File)) {
StringRef Data = File.get()->getBuffer();
if (Data.startswith("openSUSE 11.3"))
return OpenSuse11_3;
else if (Data.startswith("openSUSE 11.4"))
return OpenSuse11_4;
else if (Data.startswith("openSUSE 12.1"))
return OpenSuse12_1;
return 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 Trivial helper function to simplify code checking path existence.
static bool PathExists(StringRef Path) {
bool Exists;
if (!llvm::sys::fs::exists(Path, Exists))
return Exists;
return false;
}
namespace {
/// \brief This is a class to find a viable GCC installation for Clang to use.
///
/// This class tries to find a GCC installation on the system, and report
/// information about it. It starts from the host information provided to the
/// Driver, and has logic for fuzzing that where appropriate.
class GCCInstallationDetector {
/// \brief Struct to store and manipulate GCC versions.
///
/// We rely on assumptions about the form and structure of GCC version
/// numbers: they consist of at most three '.'-separated components, and each
/// component is a non-negative integer.
struct GCCVersion {
unsigned Major, Minor, Patch;
static GCCVersion Parse(StringRef VersionText) {
const GCCVersion BadVersion = {0, 0, 0};
std::pair<StringRef, StringRef> First = VersionText.split('.');
std::pair<StringRef, StringRef> Second = First.second.split('.');
GCCVersion GoodVersion = {0, 0, 0};
if (First.first.getAsInteger(10, GoodVersion.Major))
return BadVersion;
if (Second.first.getAsInteger(10, GoodVersion.Minor))
return BadVersion;
// We accept a number, or a string for the patch version, in case there
// is a strang suffix, or other mangling: '4.1.x', '4.1.2-rc3'. When it
// isn't a number, we just use '0' as the number but accept it.
if (Second.first.getAsInteger(10, GoodVersion.Patch))
GoodVersion.Patch = 0;
return GoodVersion;
}
bool operator<(const GCCVersion &RHS) const {
if (Major < RHS.Major) return true;
if (Major > RHS.Major) return false;
if (Minor < RHS.Minor) return true;
if (Minor > RHS.Minor) return false;
return Patch < RHS.Patch;
}
bool operator>(const GCCVersion &RHS) const { return RHS < *this; }
bool operator<=(const GCCVersion &RHS) const { return !(*this > RHS); }
bool operator>=(const GCCVersion &RHS) const { return !(*this < RHS); }
};
bool IsValid;
std::string GccTriple;
// FIXME: These might be better as path objects.
std::string GccInstallPath;
std::string GccParentLibPath;
llvm::SmallString<128> CxxIncludeRoot;
public:
/// \brief Construct a GCCInstallationDetector from the driver.
///
/// This performs all of the autodetection and sets up the various paths.
/// Once constructed, a GCCInstallation is esentially immutable.
GCCInstallationDetector(const Driver &D)
: IsValid(false),
GccTriple(D.DefaultHostTriple),
CxxIncludeRoot(CXX_INCLUDE_ROOT) {
// FIXME: Using CXX_INCLUDE_ROOT is here is a bit of a hack, but
// avoids adding yet another option to configure/cmake.
// It would probably be cleaner to break it in two variables
// CXX_GCC_ROOT with just /foo/bar
// CXX_GCC_VER with 4.5.2
// Then we would have
// CXX_INCLUDE_ROOT = CXX_GCC_ROOT/include/c++/CXX_GCC_VER
// and this function would return
// CXX_GCC_ROOT/lib/gcc/CXX_INCLUDE_ARCH/CXX_GCC_VER
if (CxxIncludeRoot != "") {
// This is of the form /foo/bar/include/c++/4.5.2/
if (CxxIncludeRoot.back() == '/')
llvm::sys::path::remove_filename(CxxIncludeRoot); // remove the /
StringRef Version = llvm::sys::path::filename(CxxIncludeRoot);
llvm::sys::path::remove_filename(CxxIncludeRoot); // remove the version
llvm::sys::path::remove_filename(CxxIncludeRoot); // remove the c++
llvm::sys::path::remove_filename(CxxIncludeRoot); // remove the include
GccInstallPath = CxxIncludeRoot.str();
GccInstallPath.append("/lib/gcc/");
GccInstallPath.append(CXX_INCLUDE_ARCH);
GccInstallPath.append("/");
GccInstallPath.append(Version);
GccParentLibPath = GccInstallPath + "/../../..";
IsValid = true;
return;
}
llvm::Triple::ArchType HostArch = llvm::Triple(GccTriple).getArch();
// The library directories which may contain GCC installations.
SmallVector<StringRef, 4> CandidateLibDirs;
// The compatible GCC triples for this particular architecture.
SmallVector<StringRef, 10> CandidateTriples;
CollectLibDirsAndTriples(HostArch, CandidateLibDirs, CandidateTriples);
// Always include the default host triple as the final fallback if no
// specific triple is detected.
CandidateTriples.push_back(D.DefaultHostTriple);
// Compute the set of prefixes for our search.
SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
D.PrefixDirs.end());
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.
GCCVersion BestVersion = {0, 0, 0};
for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) {
if (!PathExists(Prefixes[i]))
continue;
for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) {
const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str();
if (!PathExists(LibDir))
continue;
for (unsigned k = 0, ke = CandidateTriples.size(); k < ke; ++k)
ScanLibDirForGCCTriple(LibDir, CandidateTriples[k], BestVersion);
}
}
}
/// \brief Check whether we detected a valid GCC install.
bool isValid() const { return IsValid; }
/// \brief Get the GCC triple for the detected install.
const std::string &getTriple() const { return GccTriple; }
/// \brief Get the detected GCC installation path.
const std::string &getInstallPath() const { return GccInstallPath; }
/// \brief Get the detected GCC parent lib path.
const std::string &getParentLibPath() const { return GccParentLibPath; }
private:
static void CollectLibDirsAndTriples(llvm::Triple::ArchType HostArch,
SmallVectorImpl<StringRef> &LibDirs,
SmallVectorImpl<StringRef> &Triples) {
if (HostArch == llvm::Triple::arm || HostArch == llvm::Triple::thumb) {
static const char *const ARMLibDirs[] = { "/lib" };
static const char *const ARMTriples[] = { "arm-linux-gnueabi" };
LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs));
Triples.append(ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples));
} else if (HostArch == llvm::Triple::x86_64) {
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"
};
LibDirs.append(X86_64LibDirs,
X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs));
Triples.append(X86_64Triples,
X86_64Triples + llvm::array_lengthof(X86_64Triples));
} else if (HostArch == llvm::Triple::x86) {
static const char *const X86LibDirs[] = { "/lib32", "/lib" };
static const char *const X86Triples[] = {
"i686-linux-gnu",
"i386-linux-gnu",
"i686-pc-linux-gnu",
"i486-linux-gnu",
"i686-redhat-linux",
"i386-redhat-linux",
"i586-suse-linux",
"i486-slackware-linux"
};
LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs));
Triples.append(X86Triples, X86Triples + llvm::array_lengthof(X86Triples));
} else if (HostArch == llvm::Triple::ppc) {
static const char *const PPCLibDirs[] = { "/lib32", "/lib" };
static const char *const PPCTriples[] = {
"powerpc-linux-gnu",
"powerpc-unknown-linux-gnu"
};
LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs));
Triples.append(PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples));
} else if (HostArch == llvm::Triple::ppc64) {
static const char *const PPC64LibDirs[] = { "/lib64", "/lib" };
static const char *const PPC64Triples[] = {
"powerpc64-unknown-linux-gnu"
};
LibDirs.append(PPC64LibDirs,
PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs));
Triples.append(PPC64Triples,
PPC64Triples + llvm::array_lengthof(PPC64Triples));
}
}
void ScanLibDirForGCCTriple(const std::string &LibDir,
StringRef CandidateTriple,
GCCVersion &BestVersion) {
// 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 Suffixes[] = {
"/gcc/" + CandidateTriple.str(),
"/" + CandidateTriple.str() + "/gcc/" + 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.
"/" + CandidateTriple.str() + "/gcc/i686-linux-gnu"
};
const std::string InstallSuffixes[] = {
"/../../..",
"/../../../..",
"/../../../.."
};
// Only look at the final, weird Ubuntu suffix for i386-linux-gnu.
const unsigned NumSuffixes = (llvm::array_lengthof(Suffixes) -
(CandidateTriple != "i386-linux-gnu"));
for (unsigned i = 0; i < NumSuffixes; ++i) {
StringRef Suffix = Suffixes[i];
llvm::error_code EC;
for (llvm::sys::fs::directory_iterator LI(LibDir + Suffix, 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 };
if (CandidateVersion < MinVersion)
continue;
if (CandidateVersion <= BestVersion)
continue;
if (!PathExists(LI->path() + "/crtbegin.o"))
continue;
BestVersion = CandidateVersion;
GccTriple = CandidateTriple.str();
// FIXME: We hack together the directory name here instead of
// using LI to ensure stable path separators across Windows and
// Linux.
GccInstallPath = LibDir + Suffixes[i] + "/" + VersionText.str();
GccParentLibPath = GccInstallPath + InstallSuffixes[i];
IsValid = true;
}
}
}
};
}
static void addPathIfExists(const std::string &Path,
ToolChain::path_list &Paths) {
if (PathExists(Path)) Paths.push_back(Path);
}
Linux::Linux(const HostInfo &Host, const llvm::Triple &Triple)
: Generic_ELF(Host, Triple) {
llvm::Triple::ArchType Arch =
llvm::Triple(getDriver().DefaultHostTriple).getArch();
const std::string &SysRoot = getDriver().SysRoot;
GCCInstallationDetector GCCInstallation(getDriver());
// OpenSuse stores the linker with the compiler, add that to the search
// path.
ToolChain::path_list &PPaths = getProgramPaths();
PPaths.push_back(GCCInstallation.getParentLibPath() + "/../" +
GCCInstallation.getTriple() + "/bin");
Linker = GetProgramPath("ld");
LinuxDistro Distro = DetectLinuxDistro(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");
if (IsRedhat(Distro) || IsOpenSuse(Distro) || Distro == UbuntuMaverick ||
Distro == UbuntuNatty || Distro == UbuntuOneiric)
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 ||
IsOpenSuse(Distro) ||
(IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) ||
Distro == UbuntuLucid ||
Distro == UbuntuMaverick || Distro == UbuntuKarmic ||
Distro == UbuntuNatty || Distro == UbuntuOneiric)
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 bool Is32Bits = (getArch() == llvm::Triple::x86 ||
getArch() == llvm::Triple::ppc);
const std::string Suffix32 = Arch == llvm::Triple::x86_64 ? "/32" : "";
const std::string Suffix64 = Arch == llvm::Triple::x86_64 ? "" : "/64";
const std::string Suffix = Is32Bits ? Suffix32 : Suffix64;
const std::string Multilib = Is32Bits ? "lib32" : "lib64";
// FIXME: Because we add paths only when they exist on the system, I think we
// should remove the concept of 'HasMultilib'. It's more likely to break the
// behavior than to preserve any useful invariant on the system.
if (HasMultilib(Arch, Distro)) {
// Add the multilib suffixed paths.
if (GCCInstallation.isValid()) {
const std::string &LibPath = GCCInstallation.getParentLibPath();
const std::string &GccTriple = GCCInstallation.getTriple();
// FIXME: This OpenSuse-specific path shouldn't be needed any more, but
// I don't want to remove it without finding someone to test.
if (IsOpenSuse(Distro) && Is32Bits)
Paths.push_back(LibPath + "/../" + GccTriple + "/lib/../lib");
addPathIfExists(GCCInstallation.getInstallPath() + Suffix, Paths);
addPathIfExists(LibPath + "/../" + GccTriple + "/lib/../" + Multilib,
Paths);
addPathIfExists(LibPath + "/../" + Multilib, Paths);
}
addPathIfExists(SysRoot + "/lib/../" + Multilib, 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() +
"/../../" + Multilib, Paths);
}
// Add the non-multilib suffixed paths (if potentially different).
if (GCCInstallation.isValid()) {
const std::string &LibPath = GCCInstallation.getParentLibPath();
const std::string &GccTriple = GCCInstallation.getTriple();
if (!Suffix.empty() || !HasMultilib(Arch, Distro))
addPathIfExists(GCCInstallation.getInstallPath(), Paths);
addPathIfExists(LibPath + "/../" + GccTriple + "/lib", Paths);
addPathIfExists(LibPath, Paths);
}
addPathIfExists(SysRoot + "/lib", Paths);
addPathIfExists(SysRoot + "/usr/lib", Paths);
// Add a multiarch lib directory whenever it exists and is plausible.
if (GCCInstallation.isValid() && Arch == getArch())
addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple(), Paths);
}
bool Linux::HasNativeLLVMSupport() const {
return true;
}
Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIntegratedAssemblerDefault());
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
if (UseIntegratedAs)
T = new tools::ClangAs(*this);
else
T = new tools::linuxtools::Assemble(*this);
break;
case Action::LinkJobClass:
T = new tools::linuxtools::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
DragonFly::DragonFly(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_ELF(Host, Triple) {
// 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");
getFilePaths().push_back("/usr/lib/gcc41");
}
Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
T = new tools::dragonfly::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::dragonfly::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA, Inputs);
}
}
return *T;
}
Windows::Windows(const HostInfo &Host, const llvm::Triple& Triple)
: ToolChain(Host, Triple) {
}
Tool &Windows::SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const {
Action::ActionClass Key;
if (getDriver().ShouldUseClangCompiler(C, JA, getTriple()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as,
options::OPT_no_integrated_as,
IsIntegratedAssemblerDefault());
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::InputClass:
case Action::BindArchClass:
case Action::LipoJobClass:
case Action::DsymutilJobClass:
case Action::VerifyJobClass:
llvm_unreachable("Invalid tool kind.");
case Action::PreprocessJobClass:
case Action::PrecompileJobClass:
case Action::AnalyzeJobClass:
case Action::CompileJobClass:
T = new tools::Clang(*this); break;
case Action::AssembleJobClass:
if (!UseIntegratedAs && getTriple().getEnvironment() == llvm::Triple::MachO)
T = new tools::darwin::Assemble(*this);
else
T = new tools::ClangAs(*this);
break;
case Action::LinkJobClass:
T = new tools::visualstudio::Link(*this); break;
}
}
return *T;
}
bool Windows::IsIntegratedAssemblerDefault() const {
return true;
}
bool Windows::IsUnwindTablesDefault() const {
// FIXME: Gross; we should probably have some separate target
// definition, possibly even reusing the one in clang.
return getArchName() == "x86_64";
}
const char *Windows::GetDefaultRelocationModel() const {
return "static";
}
const char *Windows::GetForcedPicModel() const {
if (getArchName() == "x86_64")
return "pic";
return 0;
}
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