1 //===--- Fuchsia.cpp - Fuchsia ToolChain Implementations --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 #include "CommonArgs.h"
12 #include "clang/Config/config.h"
13 #include "clang/Driver/Compilation.h"
14 #include "clang/Driver/Driver.h"
15 #include "clang/Driver/DriverDiagnostic.h"
16 #include "clang/Driver/Options.h"
17 #include "clang/Driver/SanitizerArgs.h"
18 #include "llvm/Option/ArgList.h"
19 #include "llvm/Support/Path.h"
21 using namespace clang::driver;
22 using namespace clang::driver::toolchains;
23 using namespace clang::driver::tools;
24 using namespace clang;
25 using namespace llvm::opt;
27 void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
28 const InputInfo &Output,
29 const InputInfoList &Inputs,
31 const char *LinkingOutput) const {
32 const toolchains::Fuchsia &ToolChain =
33 static_cast<const toolchains::Fuchsia &>(getToolChain());
34 const Driver &D = ToolChain.getDriver();
36 ArgStringList CmdArgs;
38 // Silence warning for "clang -g foo.o -o foo"
39 Args.ClaimAllArgs(options::OPT_g_Group);
40 // and "clang -emit-llvm foo.o -o foo"
41 Args.ClaimAllArgs(options::OPT_emit_llvm);
42 // and for "clang -w foo.o -o foo". Other warning options are already
43 // handled somewhere else.
44 Args.ClaimAllArgs(options::OPT_w);
46 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
47 if (llvm::sys::path::filename(Exec).equals_lower("ld.lld") ||
48 llvm::sys::path::stem(Exec).equals_lower("ld.lld")) {
49 CmdArgs.push_back("-z");
50 CmdArgs.push_back("rodynamic");
53 if (!D.SysRoot.empty())
54 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
56 if (!Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_r))
57 CmdArgs.push_back("-pie");
59 if (Args.hasArg(options::OPT_rdynamic))
60 CmdArgs.push_back("-export-dynamic");
62 if (Args.hasArg(options::OPT_s))
63 CmdArgs.push_back("-s");
65 if (Args.hasArg(options::OPT_r)) {
66 CmdArgs.push_back("-r");
68 CmdArgs.push_back("--build-id");
69 CmdArgs.push_back("--hash-style=gnu");
72 CmdArgs.push_back("--eh-frame-hdr");
74 if (Args.hasArg(options::OPT_static))
75 CmdArgs.push_back("-Bstatic");
76 else if (Args.hasArg(options::OPT_shared))
77 CmdArgs.push_back("-shared");
79 const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs();
81 if (!Args.hasArg(options::OPT_shared)) {
82 std::string Dyld = D.DyldPrefix;
83 if (SanArgs.needsAsanRt() && SanArgs.needsSharedRt())
86 CmdArgs.push_back("-dynamic-linker");
87 CmdArgs.push_back(Args.MakeArgString(Dyld));
90 CmdArgs.push_back("-o");
91 CmdArgs.push_back(Output.getFilename());
93 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
94 if (!Args.hasArg(options::OPT_shared)) {
95 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
99 Args.AddAllArgs(CmdArgs, options::OPT_L);
100 Args.AddAllArgs(CmdArgs, options::OPT_u);
102 addSanitizerPathLibArgs(ToolChain, Args, CmdArgs);
104 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
106 if (D.isUsingLTO()) {
107 assert(!Inputs.empty() && "Must have at least one input.");
108 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
109 D.getLTOMode() == LTOK_Thin);
112 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
113 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
114 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
115 ToolChain.addProfileRTLibs(Args, CmdArgs);
117 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
118 if (Args.hasArg(options::OPT_static))
119 CmdArgs.push_back("-Bdynamic");
122 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
123 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
124 !Args.hasArg(options::OPT_static);
125 CmdArgs.push_back("--push-state");
126 CmdArgs.push_back("--as-needed");
127 if (OnlyLibstdcxxStatic)
128 CmdArgs.push_back("-Bstatic");
129 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
130 if (OnlyLibstdcxxStatic)
131 CmdArgs.push_back("-Bdynamic");
132 CmdArgs.push_back("-lm");
133 CmdArgs.push_back("--pop-state");
137 if (NeedsSanitizerDeps)
138 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
141 linkXRayRuntimeDeps(ToolChain, CmdArgs);
143 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
145 if (Args.hasArg(options::OPT_pthread) ||
146 Args.hasArg(options::OPT_pthreads))
147 CmdArgs.push_back("-lpthread");
149 if (Args.hasArg(options::OPT_fsplit_stack))
150 CmdArgs.push_back("--wrap=pthread_create");
152 CmdArgs.push_back("-lc");
155 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
158 /// Fuchsia - Fuchsia tool chain which can call as(1) and ld(1) directly.
160 Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
162 : ToolChain(D, Triple, Args) {
163 getProgramPaths().push_back(getDriver().getInstalledDir());
164 if (getDriver().getInstalledDir() != D.Dir)
165 getProgramPaths().push_back(D.Dir);
167 if (!D.SysRoot.empty()) {
168 SmallString<128> P(D.SysRoot);
169 llvm::sys::path::append(P, "lib");
170 getFilePaths().push_back(P.str());
174 std::string Fuchsia::ComputeEffectiveClangTriple(const ArgList &Args,
175 types::ID InputType) const {
176 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
177 return (Triple.getArchName() + "-" + Triple.getOSName()).str();
180 Tool *Fuchsia::buildLinker() const {
181 return new tools::fuchsia::Linker(*this);
184 ToolChain::RuntimeLibType Fuchsia::GetRuntimeLibType(
185 const ArgList &Args) const {
186 if (Arg *A = Args.getLastArg(clang::driver::options::OPT_rtlib_EQ)) {
187 StringRef Value = A->getValue();
188 if (Value != "compiler-rt")
189 getDriver().Diag(clang::diag::err_drv_invalid_rtlib_name)
190 << A->getAsString(Args);
193 return ToolChain::RLT_CompilerRT;
196 ToolChain::CXXStdlibType
197 Fuchsia::GetCXXStdlibType(const ArgList &Args) const {
198 if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
199 StringRef Value = A->getValue();
200 if (Value != "libc++")
201 getDriver().Diag(diag::err_drv_invalid_stdlib_name)
202 << A->getAsString(Args);
205 return ToolChain::CST_Libcxx;
208 void Fuchsia::addClangTargetOptions(const ArgList &DriverArgs,
209 ArgStringList &CC1Args,
210 Action::OffloadKind) const {
211 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
212 options::OPT_fno_use_init_array, true))
213 CC1Args.push_back("-fuse-init-array");
216 void Fuchsia::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
217 ArgStringList &CC1Args) const {
218 const Driver &D = getDriver();
220 if (DriverArgs.hasArg(options::OPT_nostdinc))
223 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
224 SmallString<128> P(D.ResourceDir);
225 llvm::sys::path::append(P, "include");
226 addSystemInclude(DriverArgs, CC1Args, P);
229 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
232 // Check for configure-time C include directories.
233 StringRef CIncludeDirs(C_INCLUDE_DIRS);
234 if (CIncludeDirs != "") {
235 SmallVector<StringRef, 5> dirs;
236 CIncludeDirs.split(dirs, ":");
237 for (StringRef dir : dirs) {
239 llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
240 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
245 if (!D.SysRoot.empty()) {
246 SmallString<128> P(D.SysRoot);
247 llvm::sys::path::append(P, "include");
248 addExternCSystemInclude(DriverArgs, CC1Args, P.str());
252 void Fuchsia::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
253 ArgStringList &CC1Args) const {
254 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
255 DriverArgs.hasArg(options::OPT_nostdincxx))
258 switch (GetCXXStdlibType(DriverArgs)) {
259 case ToolChain::CST_Libcxx: {
260 SmallString<128> P(getDriver().ResourceDir);
261 llvm::sys::path::append(P, "include", "c++", "v1");
262 addSystemInclude(DriverArgs, CC1Args, P.str());
267 llvm_unreachable("invalid stdlib name");
271 void Fuchsia::AddCXXStdlibLibArgs(const ArgList &Args,
272 ArgStringList &CmdArgs) const {
273 switch (GetCXXStdlibType(Args)) {
274 case ToolChain::CST_Libcxx:
275 CmdArgs.push_back("-lc++");
278 case ToolChain::CST_Libstdcxx:
279 llvm_unreachable("invalid stdlib name");
283 SanitizerMask Fuchsia::getSupportedSanitizers() const {
284 SanitizerMask Res = ToolChain::getSupportedSanitizers();
285 Res |= SanitizerKind::Address;
286 Res |= SanitizerKind::Fuzzer;
287 Res |= SanitizerKind::FuzzerNoLink;
288 Res |= SanitizerKind::SafeStack;
289 Res |= SanitizerKind::Scudo;
293 SanitizerMask Fuchsia::getDefaultSanitizers() const {
294 return SanitizerKind::SafeStack;