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llvm-project/clang/lib/Driver/ToolChains.h

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//===--- ToolChains.h - ToolChain Implementations ---------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef CLANG_LIB_DRIVER_TOOLCHAINS_H_
#define CLANG_LIB_DRIVER_TOOLCHAINS_H_
#include "clang/Driver/Action.h"
#include "clang/Driver/ToolChain.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Compiler.h"
#include "Tools.h"
namespace clang {
namespace driver {
namespace toolchains {
/// Generic_GCC - A tool chain using the 'gcc' command to perform
/// all subcommands; this relies on gcc translating the majority of
/// command line options.
class LLVM_LIBRARY_VISIBILITY Generic_GCC : public ToolChain {
protected:
/// \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 except for the last component. For
/// the last component we are very flexible in order to tolerate release
/// candidates or 'x' wildcards.
///
/// Note that the ordering established among GCCVersions is based on the
/// preferred version string to use. For example we prefer versions without
/// a hard-coded patch number to those with a hard coded patch number.
///
/// Currently this doesn't provide any logic for textual suffixes to patches
/// in the way that (for example) Debian's version format does. If that ever
/// becomes necessary, it can be added.
struct GCCVersion {
/// \brief The unparsed text of the version.
std::string Text;
/// \brief The parsed major, minor, and patch numbers.
int Major, Minor, Patch;
/// \brief Any textual suffix on the patch number.
std::string PatchSuffix;
static GCCVersion Parse(StringRef VersionText);
bool operator<(const GCCVersion &RHS) const;
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); }
};
/// \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 {
bool IsValid;
std::string GccTriple;
// FIXME: These might be better as path objects.
std::string GccInstallPath;
std::string GccParentLibPath;
GCCVersion Version;
public:
GCCInstallationDetector(const Driver &D);
/// \brief Check whether we detected a valid GCC install.
bool isValid() const { return IsValid; }
/// \brief Get the GCC triple for the detected install.
StringRef getTriple() const { return GccTriple; }
/// \brief Get the detected GCC installation path.
StringRef getInstallPath() const { return GccInstallPath; }
/// \brief Get the detected GCC parent lib path.
StringRef getParentLibPath() const { return GccParentLibPath; }
/// \brief Get the detected GCC version string.
StringRef getVersion() const { return Version.Text; }
private:
static void CollectLibDirsAndTriples(llvm::Triple::ArchType HostArch,
SmallVectorImpl<StringRef> &LibDirs,
SmallVectorImpl<StringRef> &Triples);
void ScanLibDirForGCCTriple(llvm::Triple::ArchType HostArch,
const std::string &LibDir,
StringRef CandidateTriple);
};
GCCInstallationDetector GCCInstallation;
mutable llvm::DenseMap<unsigned, Tool*> Tools;
public:
Generic_GCC(const HostInfo &Host, const llvm::Triple& Triple);
~Generic_GCC();
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
virtual bool IsUnwindTablesDefault() const;
virtual const char *GetDefaultRelocationModel() const;
virtual const char *GetForcedPicModel() const;
protected:
/// \name ToolChain Implementation Helper Functions
/// @{
/// \brief Check whether the target triple's architecture is 64-bits.
bool isTarget64Bit() const {
return (getTriple().getArch() == llvm::Triple::x86_64 ||
getTriple().getArch() == llvm::Triple::ppc64);
}
/// \brief Check whether the target triple's architecture is 32-bits.
/// FIXME: This should likely do more than just negate the 64-bit query.
bool isTarget32Bit() const { return !isTarget64Bit(); }
/// @}
};
class LLVM_LIBRARY_VISIBILITY Hexagon_TC : public ToolChain {
protected:
mutable llvm::DenseMap<unsigned, Tool*> Tools;
public:
Hexagon_TC(const HostInfo &Host, const llvm::Triple& Triple);
~Hexagon_TC();
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
virtual bool IsUnwindTablesDefault() const;
virtual const char *GetDefaultRelocationModel() const;
virtual const char *GetForcedPicModel() const;
};
/// Darwin - The base Darwin tool chain.
class LLVM_LIBRARY_VISIBILITY Darwin : public ToolChain {
public:
/// The host version.
unsigned DarwinVersion[3];
private:
mutable llvm::DenseMap<unsigned, Tool*> Tools;
/// Whether the information on the target has been initialized.
//
// FIXME: This should be eliminated. What we want to do is make this part of
// the "default target for arguments" selection process, once we get out of
// the argument translation business.
mutable bool TargetInitialized;
// FIXME: Remove this once there is a proper way to detect an ARC runtime
// for the simulator.
public:
mutable enum {
ARCSimulator_None,
ARCSimulator_HasARCRuntime,
ARCSimulator_NoARCRuntime
} ARCRuntimeForSimulator;
mutable enum {
LibCXXSimulator_None,
LibCXXSimulator_NotAvailable,
LibCXXSimulator_Available
} LibCXXForSimulator;
private:
/// Whether we are targeting iPhoneOS target.
mutable bool TargetIsIPhoneOS;
/// Whether we are targeting the iPhoneOS simulator target.
mutable bool TargetIsIPhoneOSSimulator;
/// The OS version we are targeting.
mutable unsigned TargetVersion[3];
/// The default macosx-version-min of this tool chain; empty until
/// initialized.
std::string MacosxVersionMin;
bool hasARCRuntime() const;
private:
void AddDeploymentTarget(DerivedArgList &Args) const;
public:
Darwin(const HostInfo &Host, const llvm::Triple& Triple);
~Darwin();
std::string ComputeEffectiveClangTriple(const ArgList &Args,
types::ID InputType) const;
/// @name Darwin Specific Toolchain API
/// {
// FIXME: Eliminate these ...Target functions and derive separate tool chains
// for these targets and put version in constructor.
void setTarget(bool IsIPhoneOS, unsigned Major, unsigned Minor,
unsigned Micro, bool IsIOSSim) const {
assert((!IsIOSSim || IsIPhoneOS) && "Unexpected deployment target!");
// FIXME: For now, allow reinitialization as long as values don't
// change. This will go away when we move away from argument translation.
if (TargetInitialized && TargetIsIPhoneOS == IsIPhoneOS &&
TargetIsIPhoneOSSimulator == IsIOSSim &&
TargetVersion[0] == Major && TargetVersion[1] == Minor &&
TargetVersion[2] == Micro)
return;
assert(!TargetInitialized && "Target already initialized!");
TargetInitialized = true;
TargetIsIPhoneOS = IsIPhoneOS;
TargetIsIPhoneOSSimulator = IsIOSSim;
TargetVersion[0] = Major;
TargetVersion[1] = Minor;
TargetVersion[2] = Micro;
}
bool isTargetIPhoneOS() const {
assert(TargetInitialized && "Target not initialized!");
return TargetIsIPhoneOS;
}
bool isTargetIOSSimulator() const {
assert(TargetInitialized && "Target not initialized!");
return TargetIsIPhoneOSSimulator;
}
bool isTargetInitialized() const { return TargetInitialized; }
void getTargetVersion(unsigned (&Res)[3]) const {
assert(TargetInitialized && "Target not initialized!");
Res[0] = TargetVersion[0];
Res[1] = TargetVersion[1];
Res[2] = TargetVersion[2];
}
/// getDarwinArchName - Get the "Darwin" arch name for a particular compiler
/// invocation. For example, Darwin treats different ARM variations as
/// distinct architectures.
StringRef getDarwinArchName(const ArgList &Args) const;
static bool isVersionLT(unsigned (&A)[3], unsigned (&B)[3]) {
for (unsigned i=0; i < 3; ++i) {
if (A[i] > B[i]) return false;
if (A[i] < B[i]) return true;
}
return false;
}
bool isIPhoneOSVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const {
assert(isTargetIPhoneOS() && "Unexpected call for OS X target!");
unsigned B[3] = { V0, V1, V2 };
return isVersionLT(TargetVersion, B);
}
bool isMacosxVersionLT(unsigned V0, unsigned V1=0, unsigned V2=0) const {
assert(!isTargetIPhoneOS() && "Unexpected call for iPhoneOS target!");
unsigned B[3] = { V0, V1, V2 };
return isVersionLT(TargetVersion, B);
}
/// AddLinkSearchPathArgs - Add the linker search paths to \arg CmdArgs.
///
/// \param Args - The input argument list.
/// \param CmdArgs [out] - The command argument list to append the paths
/// (prefixed by -L) to.
virtual void AddLinkSearchPathArgs(const ArgList &Args,
ArgStringList &CmdArgs) const = 0;
/// AddLinkARCArgs - Add the linker arguments to link the ARC runtime library.
virtual void AddLinkARCArgs(const ArgList &Args,
ArgStringList &CmdArgs) const = 0;
/// AddLinkRuntimeLibArgs - Add the linker arguments to link the compiler
/// runtime library.
virtual void AddLinkRuntimeLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const = 0;
/// }
/// @name ToolChain Implementation
/// {
virtual types::ID LookupTypeForExtension(const char *Ext) const;
virtual bool HasNativeLLVMSupport() const;
virtual void configureObjCRuntime(ObjCRuntime &runtime) const;
virtual bool hasBlocksRuntime() const;
virtual DerivedArgList *TranslateArgs(const DerivedArgList &Args,
const char *BoundArch) const;
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
virtual bool IsBlocksDefault() const {
// Always allow blocks on Darwin; users interested in versioning are
// expected to use /usr/include/Blocks.h.
return true;
}
virtual bool IsIntegratedAssemblerDefault() const {
#ifdef DISABLE_DEFAULT_INTEGRATED_ASSEMBLER
return false;
#else
// Default integrated assembler to on for x86.
return (getTriple().getArch() == llvm::Triple::x86 ||
getTriple().getArch() == llvm::Triple::x86_64);
#endif
}
virtual bool IsStrictAliasingDefault() const {
#ifdef DISABLE_DEFAULT_STRICT_ALIASING
return false;
#else
return ToolChain::IsStrictAliasingDefault();
#endif
}
virtual bool IsObjCDefaultSynthPropertiesDefault() const {
return false;
}
virtual bool IsObjCNonFragileABIDefault() const {
// Non-fragile ABI is default for everything but i386.
return getTriple().getArch() != llvm::Triple::x86;
}
virtual bool IsObjCLegacyDispatchDefault() const {
// This is only used with the non-fragile ABI.
// Legacy dispatch is used everywhere except on x86_64.
return getTriple().getArch() != llvm::Triple::x86_64;
}
virtual bool UseObjCMixedDispatch() const {
// This is only used with the non-fragile ABI and non-legacy dispatch.
// Mixed dispatch is used everywhere except OS X before 10.6.
return !(!isTargetIPhoneOS() && isMacosxVersionLT(10, 6));
}
virtual bool IsUnwindTablesDefault() const;
virtual unsigned GetDefaultStackProtectorLevel(bool KernelOrKext) const {
// Stack protectors default to on for user code on 10.5,
// and for everything in 10.6 and beyond
return isTargetIPhoneOS() ||
(!isMacosxVersionLT(10, 6) ||
(!isMacosxVersionLT(10, 5) && !KernelOrKext));
}
virtual RuntimeLibType GetDefaultRuntimeLibType() const {
return ToolChain::RLT_CompilerRT;
}
virtual const char *GetDefaultRelocationModel() const;
virtual const char *GetForcedPicModel() const;
virtual bool SupportsProfiling() const;
virtual bool SupportsObjCGC() const;
virtual bool UseDwarfDebugFlags() const;
virtual bool UseSjLjExceptions() const;
/// }
};
/// DarwinClang - The Darwin toolchain used by Clang.
class LLVM_LIBRARY_VISIBILITY DarwinClang : public Darwin {
private:
void AddGCCLibexecPath(unsigned darwinVersion);
public:
DarwinClang(const HostInfo &Host, const llvm::Triple& Triple);
/// @name Darwin ToolChain Implementation
/// {
virtual void AddLinkSearchPathArgs(const ArgList &Args,
ArgStringList &CmdArgs) const;
virtual void AddLinkRuntimeLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const;
void AddLinkRuntimeLib(const ArgList &Args, ArgStringList &CmdArgs,
const char *DarwinStaticLib) const;
virtual void AddCXXStdlibLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const;
virtual void AddCCKextLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const;
virtual void AddLinkARCArgs(const ArgList &Args,
ArgStringList &CmdArgs) const;
/// }
};
/// Darwin_Generic_GCC - Generic Darwin tool chain using gcc.
class LLVM_LIBRARY_VISIBILITY Darwin_Generic_GCC : public Generic_GCC {
public:
Darwin_Generic_GCC(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {}
std::string ComputeEffectiveClangTriple(const ArgList &Args,
types::ID InputType) const;
virtual const char *GetDefaultRelocationModel() const { return "pic"; }
};
class LLVM_LIBRARY_VISIBILITY Generic_ELF : public Generic_GCC {
virtual void anchor();
public:
Generic_ELF(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {}
virtual bool IsIntegratedAssemblerDefault() const {
// Default integrated assembler to on for x86.
return (getTriple().getArch() == llvm::Triple::x86 ||
getTriple().getArch() == llvm::Triple::x86_64);
}
};
class LLVM_LIBRARY_VISIBILITY AuroraUX : public Generic_GCC {
public:
AuroraUX(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY OpenBSD : public Generic_ELF {
public:
OpenBSD(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY FreeBSD : public Generic_ELF {
public:
FreeBSD(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY NetBSD : public Generic_ELF {
const llvm::Triple ToolTriple;
public:
NetBSD(const HostInfo &Host, const llvm::Triple& Triple,
const llvm::Triple& ToolTriple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY Minix : public Generic_ELF {
public:
Minix(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY DragonFly : public Generic_ELF {
public:
DragonFly(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
};
class LLVM_LIBRARY_VISIBILITY Linux : public Generic_ELF {
public:
Linux(const HostInfo &Host, const llvm::Triple& Triple);
virtual bool HasNativeLLVMSupport() const;
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
virtual void AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const;
virtual void AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const;
std::string Linker;
std::vector<std::string> ExtraOpts;
private:
static bool addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir,
const ArgList &DriverArgs,
ArgStringList &CC1Args);
};
/// TCEToolChain - A tool chain using the llvm bitcode tools to perform
/// all subcommands. See http://tce.cs.tut.fi for our peculiar target.
class LLVM_LIBRARY_VISIBILITY TCEToolChain : public ToolChain {
public:
TCEToolChain(const HostInfo &Host, const llvm::Triple& Triple);
~TCEToolChain();
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
bool IsMathErrnoDefault() const;
bool IsUnwindTablesDefault() const;
const char* GetDefaultRelocationModel() const;
const char* GetForcedPicModel() const;
private:
mutable llvm::DenseMap<unsigned, Tool*> Tools;
};
class LLVM_LIBRARY_VISIBILITY Windows : public ToolChain {
mutable llvm::DenseMap<unsigned, Tool*> Tools;
public:
Windows(const HostInfo &Host, const llvm::Triple& Triple);
virtual Tool &SelectTool(const Compilation &C, const JobAction &JA,
const ActionList &Inputs) const;
virtual bool IsIntegratedAssemblerDefault() const;
virtual bool IsUnwindTablesDefault() const;
virtual const char *GetDefaultRelocationModel() const;
virtual const char *GetForcedPicModel() const;
virtual void AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const;
virtual void AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const;
};
} // end namespace toolchains
} // end namespace driver
} // end namespace clang
#endif
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