void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
const ArgList &Args, ArgStringList &CmdArgs,
const JobAction &JA) {
const Driver &D = TC.getDriver();
// Add extra linker input arguments which are not treated as inputs
// (constructed via -Xarch_).
Args.AddAllArgValues(CmdArgs, options::OPT_Zlinker_input);
for (const auto &II : Inputs) {
// If the current tool chain refers to an OpenMP offloading host, we should
// ignore inputs that refer to OpenMP offloading devices - they will be
// embedded according to a proper linker script.
if (auto *IA = II.getAction())
if (JA.isHostOffloading(Action::OFK_OpenMP) &&
IA->isDeviceOffloading(Action::OFK_OpenMP))
continue;
if (!TC.HasNativeLLVMSupport() && types::isLLVMIR(II.getType()))
// Don't try to pass LLVM inputs unless we have native support.
D.Diag(diag::err_drv_no_linker_llvm_support) << TC.getTripleString();
// Add filenames immediately.
if (II.isFilename()) {
CmdArgs.push_back(II.getFilename());
continue;
}
// Otherwise, this is a linker input argument.
const Arg &A = II.getInputArg();
// Handle reserved library options.
if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx))
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
else if (A.getOption().matches(options::OPT_Z_reserved_lib_cckext))
TC.AddCCKextLibArgs(Args, CmdArgs);
else if (A.getOption().matches(options::OPT_z)) {
// Pass -z prefix for gcc linker compatibility.
A.claim();
A.render(Args, CmdArgs);
} else {
A.renderAsInput(Args, CmdArgs);
}
}
// LIBRARY_PATH - included following the user specified library paths.
// and only supported on native toolchains.
if (!TC.isCrossCompiling()) {
addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
}
}
// Should be called before we add system libraries (C++ ABI, libstdc++/libc++,
// C runtime, etc). Returns true if sanitizer system deps need to be linked in.
bool tools::addSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
ArgStringList &CmdArgs) {
SmallVector<StringRef, 4> SharedRuntimes, StaticRuntimes,
NonWholeStaticRuntimes, HelperStaticRuntimes, RequiredSymbols;
collectSanitizerRuntimes(TC, Args, SharedRuntimes, StaticRuntimes,
NonWholeStaticRuntimes, HelperStaticRuntimes,
RequiredSymbols);
// Inject libfuzzer dependencies.
if (TC.getSanitizerArgs().needsFuzzer()
&& !Args.hasArg(options::OPT_shared)) {
addSanitizerRuntime(TC, Args, CmdArgs, "fuzzer", false, true);
if (!Args.hasArg(clang::driver::options::OPT_nostdlibxx))
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
}
for (auto RT : SharedRuntimes)
addSanitizerRuntime(TC, Args, CmdArgs, RT, true, false);
for (auto RT : HelperStaticRuntimes)
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
bool AddExportDynamic = false;
for (auto RT : StaticRuntimes) {
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, true);
AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
}
for (auto RT : NonWholeStaticRuntimes) {
addSanitizerRuntime(TC, Args, CmdArgs, RT, false, false);
AddExportDynamic |= !addSanitizerDynamicList(TC, Args, CmdArgs, RT);
}
for (auto S : RequiredSymbols) {
CmdArgs.push_back("-u");
CmdArgs.push_back(Args.MakeArgString(S));
}
// If there is a static runtime with no dynamic list, force all the symbols
// to be dynamic to be sure we export sanitizer interface functions.
if (AddExportDynamic)
CmdArgs.push_back("-export-dynamic");
const SanitizerArgs &SanArgs = TC.getSanitizerArgs();
if (SanArgs.hasCrossDsoCfi() && !AddExportDynamic)
CmdArgs.push_back("-export-dynamic-symbol=__cfi_check");
return !StaticRuntimes.empty() || !NonWholeStaticRuntimes.empty();
}
