1 //===--- Solaris.cpp - Solaris ToolChain Implementations --------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "Solaris.h"
10 #include "CommonArgs.h"
11 #include "clang/Basic/LangStandard.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 "llvm/Option/ArgList.h"
18 #include "llvm/Support/FileSystem.h"
19 #include "llvm/Support/Path.h"
20
21 using namespace clang::driver;
22 using namespace clang::driver::tools;
23 using namespace clang::driver::toolchains;
24 using namespace clang;
25 using namespace llvm::opt;
26
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const27 void solaris::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
28 const InputInfo &Output,
29 const InputInfoList &Inputs,
30 const ArgList &Args,
31 const char *LinkingOutput) const {
32 claimNoWarnArgs(Args);
33 ArgStringList CmdArgs;
34
35 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
36
37 CmdArgs.push_back("-o");
38 CmdArgs.push_back(Output.getFilename());
39
40 for (const auto &II : Inputs)
41 CmdArgs.push_back(II.getFilename());
42
43 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
44 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
45 Exec, CmdArgs, Inputs, Output));
46 }
47
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const48 void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
49 const InputInfo &Output,
50 const InputInfoList &Inputs,
51 const ArgList &Args,
52 const char *LinkingOutput) const {
53 ArgStringList CmdArgs;
54
55 // Demangle C++ names in errors
56 CmdArgs.push_back("-C");
57
58 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
59 CmdArgs.push_back("-e");
60 CmdArgs.push_back("_start");
61 }
62
63 if (Args.hasArg(options::OPT_static)) {
64 CmdArgs.push_back("-Bstatic");
65 CmdArgs.push_back("-dn");
66 } else {
67 CmdArgs.push_back("-Bdynamic");
68 if (Args.hasArg(options::OPT_shared)) {
69 CmdArgs.push_back("-shared");
70 }
71
72 // libpthread has been folded into libc since Solaris 10, no need to do
73 // anything for pthreads. Claim argument to avoid warning.
74 Args.ClaimAllArgs(options::OPT_pthread);
75 Args.ClaimAllArgs(options::OPT_pthreads);
76 }
77
78 if (Output.isFilename()) {
79 CmdArgs.push_back("-o");
80 CmdArgs.push_back(Output.getFilename());
81 } else {
82 assert(Output.isNothing() && "Invalid output.");
83 }
84
85 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
86 if (!Args.hasArg(options::OPT_shared))
87 CmdArgs.push_back(
88 Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));
89
90 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
91
92 const Arg *Std = Args.getLastArg(options::OPT_std_EQ, options::OPT_ansi);
93 bool HaveAnsi = false;
94 const LangStandard *LangStd = nullptr;
95 if (Std) {
96 HaveAnsi = Std->getOption().matches(options::OPT_ansi);
97 if (!HaveAnsi)
98 LangStd = LangStandard::getLangStandardForName(Std->getValue());
99 }
100
101 const char *values_X = "values-Xa.o";
102 // Use values-Xc.o for -ansi, -std=c*, -std=iso9899:199409.
103 if (HaveAnsi || (LangStd && !LangStd->isGNUMode()))
104 values_X = "values-Xc.o";
105 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath(values_X)));
106
107 const char *values_xpg = "values-xpg6.o";
108 // Use values-xpg4.o for -std=c90, -std=gnu90, -std=iso9899:199409.
109 if (LangStd && LangStd->getLanguage() == Language::C && !LangStd->isC99())
110 values_xpg = "values-xpg4.o";
111 CmdArgs.push_back(
112 Args.MakeArgString(getToolChain().GetFilePath(values_xpg)));
113 CmdArgs.push_back(
114 Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
115 }
116
117 getToolChain().AddFilePathLibArgs(Args, CmdArgs);
118
119 Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
120 options::OPT_e, options::OPT_r});
121
122 bool NeedsSanitizerDeps = addSanitizerRuntimes(getToolChain(), Args, CmdArgs);
123 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
124
125 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
126 if (getToolChain().ShouldLinkCXXStdlib(Args))
127 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
128 if (Args.hasArg(options::OPT_fstack_protector) ||
129 Args.hasArg(options::OPT_fstack_protector_strong) ||
130 Args.hasArg(options::OPT_fstack_protector_all)) {
131 // Explicitly link ssp libraries, not folded into Solaris libc.
132 CmdArgs.push_back("-lssp_nonshared");
133 CmdArgs.push_back("-lssp");
134 }
135 CmdArgs.push_back("-lgcc_s");
136 CmdArgs.push_back("-lc");
137 if (!Args.hasArg(options::OPT_shared)) {
138 CmdArgs.push_back("-lgcc");
139 CmdArgs.push_back("-lm");
140 }
141 if (NeedsSanitizerDeps)
142 linkSanitizerRuntimeDeps(getToolChain(), CmdArgs);
143 }
144
145 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
146 CmdArgs.push_back(
147 Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
148 }
149 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
150
151 getToolChain().addProfileRTLibs(Args, CmdArgs);
152
153 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
154 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
155 Exec, CmdArgs, Inputs, Output));
156 }
157
getSolarisLibSuffix(const llvm::Triple & Triple)158 static StringRef getSolarisLibSuffix(const llvm::Triple &Triple) {
159 switch (Triple.getArch()) {
160 case llvm::Triple::x86:
161 case llvm::Triple::sparc:
162 break;
163 case llvm::Triple::x86_64:
164 return "/amd64";
165 case llvm::Triple::sparcv9:
166 return "/sparcv9";
167 default:
168 llvm_unreachable("Unsupported architecture");
169 }
170 return "";
171 }
172
173 /// Solaris - Solaris tool chain which can call as(1) and ld(1) directly.
174
Solaris(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)175 Solaris::Solaris(const Driver &D, const llvm::Triple &Triple,
176 const ArgList &Args)
177 : Generic_ELF(D, Triple, Args) {
178
179 GCCInstallation.init(Triple, Args);
180
181 StringRef LibSuffix = getSolarisLibSuffix(Triple);
182 path_list &Paths = getFilePaths();
183 if (GCCInstallation.isValid()) {
184 // On Solaris gcc uses both an architecture-specific path with triple in it
185 // as well as a more generic lib path (+arch suffix).
186 addPathIfExists(D,
187 GCCInstallation.getInstallPath() +
188 GCCInstallation.getMultilib().gccSuffix(),
189 Paths);
190 addPathIfExists(D, GCCInstallation.getParentLibPath() + LibSuffix, Paths);
191 }
192
193 // If we are currently running Clang inside of the requested system root,
194 // add its parent library path to those searched.
195 if (StringRef(D.Dir).startswith(D.SysRoot))
196 addPathIfExists(D, D.Dir + "/../lib", Paths);
197
198 addPathIfExists(D, D.SysRoot + "/usr/lib" + LibSuffix, Paths);
199 }
200
getSupportedSanitizers() const201 SanitizerMask Solaris::getSupportedSanitizers() const {
202 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
203 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
204 SanitizerMask Res = ToolChain::getSupportedSanitizers();
205 // FIXME: Omit X86_64 until 64-bit support is figured out.
206 if (IsX86) {
207 Res |= SanitizerKind::Address;
208 Res |= SanitizerKind::PointerCompare;
209 Res |= SanitizerKind::PointerSubtract;
210 }
211 if (IsX86 || IsX86_64)
212 Res |= SanitizerKind::Function;
213 Res |= SanitizerKind::Vptr;
214 return Res;
215 }
216
buildAssembler() const217 Tool *Solaris::buildAssembler() const {
218 return new tools::solaris::Assembler(*this);
219 }
220
buildLinker() const221 Tool *Solaris::buildLinker() const { return new tools::solaris::Linker(*this); }
222
AddClangSystemIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const223 void Solaris::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
224 ArgStringList &CC1Args) const {
225 const Driver &D = getDriver();
226
227 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
228 return;
229
230 if (!DriverArgs.hasArg(options::OPT_nostdlibinc))
231 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include");
232
233 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
234 SmallString<128> P(D.ResourceDir);
235 llvm::sys::path::append(P, "include");
236 addSystemInclude(DriverArgs, CC1Args, P);
237 }
238
239 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
240 return;
241
242 // Check for configure-time C include directories.
243 StringRef CIncludeDirs(C_INCLUDE_DIRS);
244 if (CIncludeDirs != "") {
245 SmallVector<StringRef, 5> dirs;
246 CIncludeDirs.split(dirs, ":");
247 for (StringRef dir : dirs) {
248 StringRef Prefix =
249 llvm::sys::path::is_absolute(dir) ? "" : StringRef(D.SysRoot);
250 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
251 }
252 return;
253 }
254
255 // Add include directories specific to the selected multilib set and multilib.
256 if (GCCInstallation.isValid()) {
257 const MultilibSet::IncludeDirsFunc &Callback =
258 Multilibs.includeDirsCallback();
259 if (Callback) {
260 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
261 addExternCSystemIncludeIfExists(
262 DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path);
263 }
264 }
265
266 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include");
267 }
268
addLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const269 void Solaris::addLibStdCxxIncludePaths(
270 const llvm::opt::ArgList &DriverArgs,
271 llvm::opt::ArgStringList &CC1Args) const {
272 // We need a detected GCC installation on Solaris (similar to Linux)
273 // to provide libstdc++'s headers.
274 if (!GCCInstallation.isValid())
275 return;
276
277 // By default, look for the C++ headers in an include directory adjacent to
278 // the lib directory of the GCC installation.
279 // On Solaris this usually looks like /usr/gcc/X.Y/include/c++/X.Y.Z
280 StringRef LibDir = GCCInstallation.getParentLibPath();
281 StringRef TripleStr = GCCInstallation.getTriple().str();
282 const Multilib &Multilib = GCCInstallation.getMultilib();
283 const GCCVersion &Version = GCCInstallation.getVersion();
284
285 // The primary search for libstdc++ supports multiarch variants.
286 addLibStdCXXIncludePaths(LibDir.str() + "/../include", "/c++/" + Version.Text,
287 TripleStr,
288 /*GCCMultiarchTriple*/ "",
289 /*TargetMultiarchTriple*/ "",
290 Multilib.includeSuffix(), DriverArgs, CC1Args);
291 }
292