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llvm-project/clang/lib/Driver/ToolChains/Solaris.cpp

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//===--- Solaris.cpp - Solaris ToolChain Implementations --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "Solaris.h"
#include "CommonArgs.h"
#include "clang/Config/config.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang::driver::toolchains;
using namespace clang;
using namespace llvm::opt;
void solaris::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
ArgStringList CmdArgs;
// Demangle C++ names in errors
CmdArgs.push_back("-C");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
CmdArgs.push_back("-e");
CmdArgs.push_back("_start");
}
if (Args.hasArg(options::OPT_static)) {
CmdArgs.push_back("-Bstatic");
CmdArgs.push_back("-dn");
} else {
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-shared");
} else {
CmdArgs.push_back("--dynamic-linker");
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("ld.so.1")));
}
// libpthread has been folded into libc since Solaris 10, no need to do
// anything for pthreads. Claim argument to avoid warning.
Args.ClaimAllArgs(options::OPT_pthread);
Args.ClaimAllArgs(options::OPT_pthreads);
}
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
} else {
assert(Output.isNothing() && "Invalid output.");
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (!Args.hasArg(options::OPT_shared))
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("values-Xa.o")));
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
}
// Provide __start___sancov_guards. Solaris ld doesn't automatically create
// __start_SECNAME labels.
CmdArgs.push_back("--whole-archive");
CmdArgs.push_back(
getToolChain().getCompilerRTArgString(Args, "sancov_begin"));
CmdArgs.push_back("--no-whole-archive");
getToolChain().AddFilePathLibArgs(Args, CmdArgs);
Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_e, options::OPT_r});
bool NeedsSanitizerDeps = addSanitizerRuntimes(getToolChain(), Args, CmdArgs);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
if (getToolChain().ShouldLinkCXXStdlib(Args))
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
if (Args.hasArg(options::OPT_fstack_protector) ||
Args.hasArg(options::OPT_fstack_protector_strong) ||
Args.hasArg(options::OPT_fstack_protector_all)) {
// Explicitly link ssp libraries, not folded into Solaris libc.
CmdArgs.push_back("-lssp_nonshared");
CmdArgs.push_back("-lssp");
}
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("-lc");
if (!Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lm");
}
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(getToolChain(), CmdArgs);
}
// Provide __stop___sancov_guards. Solaris ld doesn't automatically create
// __stop_SECNAME labels.
CmdArgs.push_back("--whole-archive");
CmdArgs.push_back(
getToolChain().getCompilerRTArgString(Args, "sancov_end"));
CmdArgs.push_back("--no-whole-archive");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(
Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
}
CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
getToolChain().addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
static StringRef getSolarisLibSuffix(const llvm::Triple &Triple) {
switch (Triple.getArch()) {
case llvm::Triple::x86:
case llvm::Triple::sparc:
break;
case llvm::Triple::x86_64:
return "/amd64";
case llvm::Triple::sparcv9:
return "/sparcv9";
default:
llvm_unreachable("Unsupported architecture");
}
return "";
}
/// 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_ELF(D, Triple, Args) {
GCCInstallation.init(Triple, Args);
StringRef LibSuffix = getSolarisLibSuffix(Triple);
path_list &Paths = getFilePaths();
if (GCCInstallation.isValid()) {
// On Solaris gcc uses both an architecture-specific path with triple in it
// as well as a more generic lib path (+arch suffix).
addPathIfExists(D,
GCCInstallation.getInstallPath() +
GCCInstallation.getMultilib().gccSuffix(),
Paths);
addPathIfExists(D, GCCInstallation.getParentLibPath() + LibSuffix, Paths);
}
// If we are currently running Clang inside of the requested system root,
// add its parent library path to those searched.
if (StringRef(D.Dir).startswith(D.SysRoot))
addPathIfExists(D, D.Dir + "/../lib", Paths);
addPathIfExists(D, D.SysRoot + "/usr/lib" + LibSuffix, Paths);
}
SanitizerMask Solaris::getSupportedSanitizers() const {
const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
SanitizerMask Res = ToolChain::getSupportedSanitizers();
// FIXME: Omit X86_64 until 64-bit support is figured out.
if (IsX86) {
Res |= SanitizerKind::Address;
Res |= SanitizerKind::PointerCompare;
Res |= SanitizerKind::PointerSubtract;
}
Res |= SanitizerKind::Vptr;
return Res;
}
Tool *Solaris::buildAssembler() const {
return new tools::solaris::Assembler(*this);
}
Tool *Solaris::buildLinker() const { return new tools::solaris::Linker(*this); }
void Solaris::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
const Driver &D = getDriver();
if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
return;
if (!DriverArgs.hasArg(options::OPT_nostdlibinc))
addSystemInclude(DriverArgs, CC1Args, D.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);
}
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 (StringRef dir : dirs) {
StringRef Prefix =
llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
}
return;
}
// Add include directories specific to the selected multilib set and multilib.
if (GCCInstallation.isValid()) {
const MultilibSet::IncludeDirsFunc &Callback =
Multilibs.includeDirsCallback();
if (Callback) {
for (const auto &Path : Callback(GCCInstallation.getMultilib()))
addExternCSystemIncludeIfExists(
DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path);
}
}
addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include");
}
void Solaris::addLibStdCxxIncludePaths(
const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
// We need a detected GCC installation on Solaris (similar to Linux)
// to provide libstdc++'s headers.
if (!GCCInstallation.isValid())
return;
// By default, look for the C++ headers in an include directory adjacent to
// the lib directory of the GCC installation.
// On Solaris this usually looks like /usr/gcc/X.Y/include/c++/X.Y.Z
StringRef LibDir = GCCInstallation.getParentLibPath();
StringRef TripleStr = GCCInstallation.getTriple().str();
const Multilib &Multilib = GCCInstallation.getMultilib();
const GCCVersion &Version = GCCInstallation.getVersion();
// The primary search for libstdc++ supports multiarch variants.
addLibStdCXXIncludePaths(LibDir.str() + "/../include", "/c++/" + Version.Text,
TripleStr,
/*GCCMultiarchTriple*/ "",
/*TargetMultiarchTriple*/ "",
Multilib.includeSuffix(), DriverArgs, CC1Args);
}
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