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 if (!Args.hasArg(options::OPT_shared)) {
80 std::string Dyld = D.DyldPrefix;
81 if (ToolChain.getSanitizerArgs().needsAsanRt() &&
82 ToolChain.getSanitizerArgs().needsSharedRt())
85 CmdArgs.push_back("-dynamic-linker");
86 CmdArgs.push_back(Args.MakeArgString(Dyld));
89 CmdArgs.push_back("-o");
90 CmdArgs.push_back(Output.getFilename());
92 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
93 if (!Args.hasArg(options::OPT_shared)) {
94 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
98 Args.AddAllArgs(CmdArgs, options::OPT_L);
99 Args.AddAllArgs(CmdArgs, options::OPT_u);
101 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
103 addSanitizerRuntimes(ToolChain, Args, CmdArgs);
105 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
107 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
108 if (Args.hasArg(options::OPT_static))
109 CmdArgs.push_back("-Bdynamic");
112 if (ToolChain.ShouldLinkCXXStdlib(Args))
113 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
114 CmdArgs.push_back("-lm");
117 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
119 if (Args.hasArg(options::OPT_pthread) ||
120 Args.hasArg(options::OPT_pthreads))
121 CmdArgs.push_back("-lpthread");
123 if (Args.hasArg(options::OPT_fsplit_stack))
124 CmdArgs.push_back("--wrap=pthread_create");
126 CmdArgs.push_back("-lc");
129 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
132 /// Fuchsia - Fuchsia tool chain which can call as(1) and ld(1) directly.
134 static std::string normalizeTriple(llvm::Triple Triple) {
136 T += Triple.getArchName();
138 T += Triple.getOSName();
142 static std::string getTargetDir(const Driver &D,
143 llvm::Triple Triple) {
144 SmallString<128> P(llvm::sys::path::parent_path(D.Dir));
145 llvm::sys::path::append(P, "lib", normalizeTriple(Triple));
149 Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
151 : ToolChain(D, Triple, Args) {
152 getProgramPaths().push_back(getDriver().getInstalledDir());
153 if (getDriver().getInstalledDir() != D.Dir)
154 getProgramPaths().push_back(D.Dir);
156 SmallString<128> P(getTargetDir(D, getTriple()));
157 llvm::sys::path::append(P, "lib");
158 getFilePaths().push_back(P.str());
160 if (!D.SysRoot.empty()) {
161 SmallString<128> P(D.SysRoot);
162 llvm::sys::path::append(P, "lib");
163 getFilePaths().push_back(P.str());
167 std::string Fuchsia::ComputeEffectiveClangTriple(const ArgList &Args,
168 types::ID InputType) const {
169 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
170 Triple.setTriple(normalizeTriple(Triple));
171 return Triple.getTriple();
174 Tool *Fuchsia::buildLinker() const {
175 return new tools::fuchsia::Linker(*this);
178 ToolChain::RuntimeLibType Fuchsia::GetRuntimeLibType(
179 const ArgList &Args) const {
180 if (Arg *A = Args.getLastArg(clang::driver::options::OPT_rtlib_EQ)) {
181 StringRef Value = A->getValue();
182 if (Value != "compiler-rt")
183 getDriver().Diag(clang::diag::err_drv_invalid_rtlib_name)
184 << A->getAsString(Args);
187 return ToolChain::RLT_CompilerRT;
190 ToolChain::CXXStdlibType
191 Fuchsia::GetCXXStdlibType(const ArgList &Args) const {
192 if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
193 StringRef Value = A->getValue();
194 if (Value != "libc++")
195 getDriver().Diag(diag::err_drv_invalid_stdlib_name)
196 << A->getAsString(Args);
199 return ToolChain::CST_Libcxx;
202 void Fuchsia::addClangTargetOptions(const ArgList &DriverArgs,
203 ArgStringList &CC1Args,
204 Action::OffloadKind) const {
205 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
206 options::OPT_fno_use_init_array, true))
207 CC1Args.push_back("-fuse-init-array");
210 void Fuchsia::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
211 ArgStringList &CC1Args) const {
212 const Driver &D = getDriver();
214 if (DriverArgs.hasArg(options::OPT_nostdinc))
217 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
218 SmallString<128> P(D.ResourceDir);
219 llvm::sys::path::append(P, "include");
220 addSystemInclude(DriverArgs, CC1Args, P);
223 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
226 // Check for configure-time C include directories.
227 StringRef CIncludeDirs(C_INCLUDE_DIRS);
228 if (CIncludeDirs != "") {
229 SmallVector<StringRef, 5> dirs;
230 CIncludeDirs.split(dirs, ":");
231 for (StringRef dir : dirs) {
233 llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
234 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
239 if (!D.SysRoot.empty()) {
240 SmallString<128> P(D.SysRoot);
241 llvm::sys::path::append(P, "include");
242 addExternCSystemInclude(DriverArgs, CC1Args, P.str());
246 void Fuchsia::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
247 ArgStringList &CC1Args) const {
248 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
249 DriverArgs.hasArg(options::OPT_nostdincxx))
252 switch (GetCXXStdlibType(DriverArgs)) {
253 case ToolChain::CST_Libcxx: {
254 SmallString<128> P(getTargetDir(getDriver(), getTriple()));
255 llvm::sys::path::append(P, "include", "c++", "v1");
256 addSystemInclude(DriverArgs, CC1Args, P.str());
261 llvm_unreachable("invalid stdlib name");
265 void Fuchsia::AddCXXStdlibLibArgs(const ArgList &Args,
266 ArgStringList &CmdArgs) const {
267 switch (GetCXXStdlibType(Args)) {
268 case ToolChain::CST_Libcxx:
269 CmdArgs.push_back("-lc++");
270 CmdArgs.push_back("-lc++abi");
271 CmdArgs.push_back("-lunwind");
274 case ToolChain::CST_Libstdcxx:
275 llvm_unreachable("invalid stdlib name");
279 SanitizerMask Fuchsia::getSupportedSanitizers() const {
280 SanitizerMask Res = ToolChain::getSupportedSanitizers();
281 Res |= SanitizerKind::SafeStack;
282 Res |= SanitizerKind::Address;