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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/Driver/Arg.h"
#include "clang/Driver/ArgList.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/HostInfo.h"
#include "clang/Driver/Option.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Path.h"
#include <cstdlib> // ::getenv
using namespace clang::driver;
using namespace clang::driver::toolchains;
/// Darwin_X86 - Darwin tool chain for i386 and x86_64.
Darwin_X86::Darwin_X86(const HostInfo &Host, const llvm::Triple& Triple,
const unsigned (&_DarwinVersion)[3],
const unsigned (&_GCCVersion)[3])
: ToolChain(Host, Triple) {
DarwinVersion[0] = _DarwinVersion[0];
DarwinVersion[1] = _DarwinVersion[1];
DarwinVersion[2] = _DarwinVersion[2];
GCCVersion[0] = _GCCVersion[0];
GCCVersion[1] = _GCCVersion[1];
GCCVersion[2] = _GCCVersion[2];
llvm::raw_string_ostream(MacosxVersionMin)
<< "10." << DarwinVersion[0] - 4 << '.' << DarwinVersion[1];
ToolChainDir = "i686-apple-darwin";
ToolChainDir += llvm::utostr(DarwinVersion[0]);
ToolChainDir += "/";
ToolChainDir += llvm::utostr(GCCVersion[0]);
ToolChainDir += '.';
ToolChainDir += llvm::utostr(GCCVersion[1]);
ToolChainDir += '.';
ToolChainDir += llvm::utostr(GCCVersion[2]);
std::string Path;
if (getArchName() == "x86_64") {
Path = getHost().getDriver().Dir;
Path += "/../lib/gcc/";
Path += getToolChainDir();
Path += "/x86_64";
getFilePaths().push_back(Path);
Path = "/usr/lib/gcc/";
Path += getToolChainDir();
Path += "/x86_64";
getFilePaths().push_back(Path);
}
Path = getHost().getDriver().Dir;
Path += "/../lib/gcc/";
Path += getToolChainDir();
getFilePaths().push_back(Path);
Path = "/usr/lib/gcc/";
Path += getToolChainDir();
getFilePaths().push_back(Path);
Path = getHost().getDriver().Dir;
Path += "/../libexec/gcc/";
Path += getToolChainDir();
getProgramPaths().push_back(Path);
Path = "/usr/libexec/gcc/";
Path += getToolChainDir();
getProgramPaths().push_back(Path);
Path = getHost().getDriver().Dir;
Path += "/../libexec";
getProgramPaths().push_back(Path);
getProgramPaths().push_back(getHost().getDriver().Dir);
}
Darwin_X86::~Darwin_X86() {
// Free tool implementations.
for (llvm::DenseMap<unsigned, Tool*>::iterator
it = Tools.begin(), ie = Tools.end(); it != ie; ++it)
delete it->second;
}
Tool &Darwin_X86::SelectTool(const Compilation &C,
const JobAction &JA) const {
Action::ActionClass Key;
if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getArchName()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::InputClass:
case Action::BindArchClass:
assert(0 && "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:
T = new tools::darwin::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::darwin::Link(*this, MacosxVersionMin.c_str()); break;
case Action::LipoJobClass:
T = new tools::darwin::Lipo(*this); break;
}
}
return *T;
}
DerivedArgList *Darwin_X86::TranslateArgs(InputArgList &Args) const {
DerivedArgList *DAL = new DerivedArgList(Args, false);
const OptTable &Opts = getHost().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.
Arg *OSXVersion =
Args.getLastArg(options::OPT_mmacosx_version_min_EQ, false);
Arg *iPhoneVersion =
Args.getLastArg(options::OPT_miphoneos_version_min_EQ, false);
if (OSXVersion && iPhoneVersion) {
getHost().getDriver().Diag(clang::diag::err_drv_argument_not_allowed_with)
<< OSXVersion->getAsString(Args)
<< iPhoneVersion->getAsString(Args);
} else if (!OSXVersion && !iPhoneVersion) {
// Chose the default version based on the arch.
//
// FIXME: This will need to be fixed when we merge in arm support.
// Look for MACOSX_DEPLOYMENT_TARGET, otherwise use the version
// from the host.
const char *Version = ::getenv("MACOSX_DEPLOYMENT_TARGET");
if (!Version)
Version = MacosxVersionMin.c_str();
const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ);
DAL->append(DAL->MakeJoinedArg(0, O, Version));
}
for (ArgList::iterator it = Args.begin(), ie = Args.end(); it != ie; ++it) {
Arg *A = *it;
if (A->getOption().matches(options::OPT_Xarch__)) {
// FIXME: Canonicalize name.
if (getArchName() != A->getValue(Args, 0))
continue;
// FIXME: The arg is leaked here, and we should have a nicer
// interface for this.
unsigned Prev, Index = Prev = A->getIndex() + 1;
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 ||
XarchArg->getOption().isDriverOption()) {
getHost().getDriver().Diag(clang::diag::err_drv_invalid_Xarch_argument)
<< A->getAsString(Args);
continue;
}
XarchArg->setBaseArg(A);
A = XarchArg;
}
// Sob. These is strictly gcc compatible for the time being. Apple
// gcc translates options twice, which means that self-expanding
// options add duplicates.
options::ID id = A->getOption().getId();
switch (id) {
default:
DAL->append(A);
break;
case options::OPT_mkernel:
case options::OPT_fapple_kext:
DAL->append(A);
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
break;
case options::OPT_dependency_file:
DAL->append(DAL->MakeSeparateArg(A, Opts.getOption(options::OPT_MF),
A->getValue(Args)));
break;
case options::OPT_gfull:
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_g_Flag)));
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols)));
break;
case options::OPT_gused:
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_g_Flag)));
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_feliminate_unused_debug_symbols)));
break;
case options::OPT_fterminated_vtables:
case options::OPT_findirect_virtual_calls:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_fapple_kext)));
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_static)));
break;
case options::OPT_shared:
DAL->append(DAL->MakeFlagArg(A, Opts.getOption(options::OPT_dynamiclib)));
break;
case options::OPT_fconstant_cfstrings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mconstant_cfstrings)));
break;
case options::OPT_fno_constant_cfstrings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mno_constant_cfstrings)));
break;
case options::OPT_Wnonportable_cfstrings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mwarn_nonportable_cfstrings)));
break;
case options::OPT_Wno_nonportable_cfstrings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings)));
break;
case options::OPT_fpascal_strings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mpascal_strings)));
break;
case options::OPT_fno_pascal_strings:
DAL->append(DAL->MakeFlagArg(A,
Opts.getOption(options::OPT_mno_pascal_strings)));
break;
}
}
// FIXME: Actually, gcc always adds this, but it is filtered for
// duplicates somewhere. This also changes the order of things, so
// look it up.
if (getArchName() == "x86_64")
if (!Args.hasArg(options::OPT_m64, false))
DAL->append(DAL->MakeFlagArg(0, Opts.getOption(options::OPT_m64)));
if (!Args.hasArg(options::OPT_mtune_EQ, false))
DAL->append(DAL->MakeJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ),
"core2"));
return DAL;
}
bool Darwin_X86::IsMathErrnoDefault() const {
return false;
}
bool Darwin_X86::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 *Darwin_X86::GetDefaultRelocationModel() const {
return "pic";
}
const char *Darwin_X86::GetForcedPicModel() const {
if (getArchName() == "x86_64")
return "pic";
return 0;
}
/// 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)
{
std::string Path(getHost().getDriver().Dir);
Path += "/../libexec";
getProgramPaths().push_back(Path);
getProgramPaths().push_back(getHost().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 {
Action::ActionClass Key;
if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getArchName()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::InputClass:
case Action::BindArchClass:
assert(0 && "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;
}
}
return *T;
}
bool Generic_GCC::IsMathErrnoDefault() const {
return true;
}
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;
}
DerivedArgList *Generic_GCC::TranslateArgs(InputArgList &Args) const {
return new DerivedArgList(Args, true);
}
/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
FreeBSD::FreeBSD(const HostInfo &Host, const llvm::Triple& Triple, bool Lib32)
: Generic_GCC(Host, Triple) {
if (Lib32) {
getFilePaths().push_back(getHost().getDriver().Dir + "/../lib32");
getFilePaths().push_back("/usr/lib32");
} else {
getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
getFilePaths().push_back("/usr/lib");
}
}
Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA) const {
Action::ActionClass Key;
if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getArchName()))
Key = Action::AnalyzeJobClass;
else
Key = JA.getKind();
Tool *&T = Tools[Key];
if (!T) {
switch (Key) {
case Action::AssembleJobClass:
T = new tools::freebsd::Assemble(*this); break;
case Action::LinkJobClass:
T = new tools::freebsd::Link(*this); break;
default:
T = &Generic_GCC::SelectTool(C, JA);
}
}
return *T;
}
/// Linux toolchain (very bare-bones at the moment).
Linux::Linux(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {
getFilePaths().push_back(getHost().getDriver().Dir + "/../lib/clang/1.0/");
getFilePaths().push_back("/lib/");
getFilePaths().push_back("/usr/lib/");
// FIXME: Figure out some way to get gcc's libdir
// (e.g. /usr/lib/gcc/i486-linux-gnu/4.3/ for Ubuntu 32-bit); we need
// crtbegin.o/crtend.o/etc., and want static versions of various
// libraries. If we had our own crtbegin.o/crtend.o/etc, we could probably
// get away with using shared versions in /usr/lib, though.
// We could fall back to the approach we used for includes (a massive
// list), but that's messy at best.
}
/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
DragonFly::DragonFly(const HostInfo &Host, const llvm::Triple& Triple)
: Generic_GCC(Host, Triple) {
// Path mangling to find libexec
std::string Path(getHost().getDriver().Dir);
Path += "/../libexec";
getProgramPaths().push_back(Path);
getProgramPaths().push_back(getHost().getDriver().Dir);
getFilePaths().push_back(getHost().getDriver().Dir + "/../lib");
getFilePaths().push_back("/usr/lib");
getFilePaths().push_back("/usr/lib/gcc41");
}
Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA) const {
Action::ActionClass Key;
if (getHost().getDriver().ShouldUseClangCompiler(C, JA, getArchName()))
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);
}
}
return *T;
}
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