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 27 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 48 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 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so 136 // forcibly link with libatomic as a workaround. 137 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) { 138 CmdArgs.push_back(getAsNeededOption(getToolChain(), true)); 139 CmdArgs.push_back("-latomic"); 140 CmdArgs.push_back(getAsNeededOption(getToolChain(), false)); 141 } 142 CmdArgs.push_back("-lgcc_s"); 143 CmdArgs.push_back("-lc"); 144 if (!Args.hasArg(options::OPT_shared)) { 145 CmdArgs.push_back("-lgcc"); 146 CmdArgs.push_back("-lm"); 147 } 148 if (NeedsSanitizerDeps) 149 linkSanitizerRuntimeDeps(getToolChain(), CmdArgs); 150 } 151 152 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 153 CmdArgs.push_back( 154 Args.MakeArgString(getToolChain().GetFilePath("crtend.o"))); 155 } 156 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o"))); 157 158 getToolChain().addProfileRTLibs(Args, CmdArgs); 159 160 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath()); 161 C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(), 162 Exec, CmdArgs, Inputs, Output)); 163 } 164 165 static StringRef getSolarisLibSuffix(const llvm::Triple &Triple) { 166 switch (Triple.getArch()) { 167 case llvm::Triple::x86: 168 case llvm::Triple::sparc: 169 break; 170 case llvm::Triple::x86_64: 171 return "/amd64"; 172 case llvm::Triple::sparcv9: 173 return "/sparcv9"; 174 default: 175 llvm_unreachable("Unsupported architecture"); 176 } 177 return ""; 178 } 179 180 /// Solaris - Solaris tool chain which can call as(1) and ld(1) directly. 181 182 Solaris::Solaris(const Driver &D, const llvm::Triple &Triple, 183 const ArgList &Args) 184 : Generic_ELF(D, Triple, Args) { 185 186 GCCInstallation.init(Triple, Args); 187 188 StringRef LibSuffix = getSolarisLibSuffix(Triple); 189 path_list &Paths = getFilePaths(); 190 if (GCCInstallation.isValid()) { 191 // On Solaris gcc uses both an architecture-specific path with triple in it 192 // as well as a more generic lib path (+arch suffix). 193 addPathIfExists(D, 194 GCCInstallation.getInstallPath() + 195 GCCInstallation.getMultilib().gccSuffix(), 196 Paths); 197 addPathIfExists(D, GCCInstallation.getParentLibPath() + LibSuffix, Paths); 198 } 199 200 // If we are currently running Clang inside of the requested system root, 201 // add its parent library path to those searched. 202 if (StringRef(D.Dir).startswith(D.SysRoot)) 203 addPathIfExists(D, D.Dir + "/../lib", Paths); 204 205 addPathIfExists(D, D.SysRoot + "/usr/lib" + LibSuffix, Paths); 206 } 207 208 SanitizerMask Solaris::getSupportedSanitizers() const { 209 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86; 210 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64; 211 SanitizerMask Res = ToolChain::getSupportedSanitizers(); 212 // FIXME: Omit X86_64 until 64-bit support is figured out. 213 if (IsX86) { 214 Res |= SanitizerKind::Address; 215 Res |= SanitizerKind::PointerCompare; 216 Res |= SanitizerKind::PointerSubtract; 217 } 218 if (IsX86 || IsX86_64) 219 Res |= SanitizerKind::Function; 220 Res |= SanitizerKind::Vptr; 221 return Res; 222 } 223 224 Tool *Solaris::buildAssembler() const { 225 return new tools::solaris::Assembler(*this); 226 } 227 228 Tool *Solaris::buildLinker() const { return new tools::solaris::Linker(*this); } 229 230 void Solaris::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 231 ArgStringList &CC1Args) const { 232 const Driver &D = getDriver(); 233 234 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc)) 235 return; 236 237 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) 238 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include"); 239 240 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 241 SmallString<128> P(D.ResourceDir); 242 llvm::sys::path::append(P, "include"); 243 addSystemInclude(DriverArgs, CC1Args, P); 244 } 245 246 if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 247 return; 248 249 // Check for configure-time C include directories. 250 StringRef CIncludeDirs(C_INCLUDE_DIRS); 251 if (CIncludeDirs != "") { 252 SmallVector<StringRef, 5> dirs; 253 CIncludeDirs.split(dirs, ":"); 254 for (StringRef dir : dirs) { 255 StringRef Prefix = 256 llvm::sys::path::is_absolute(dir) ? "" : StringRef(D.SysRoot); 257 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir); 258 } 259 return; 260 } 261 262 // Add include directories specific to the selected multilib set and multilib. 263 if (GCCInstallation.isValid()) { 264 const MultilibSet::IncludeDirsFunc &Callback = 265 Multilibs.includeDirsCallback(); 266 if (Callback) { 267 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 268 addExternCSystemIncludeIfExists( 269 DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path); 270 } 271 } 272 273 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include"); 274 } 275 276 void Solaris::addLibStdCxxIncludePaths( 277 const llvm::opt::ArgList &DriverArgs, 278 llvm::opt::ArgStringList &CC1Args) const { 279 // We need a detected GCC installation on Solaris (similar to Linux) 280 // to provide libstdc++'s headers. 281 if (!GCCInstallation.isValid()) 282 return; 283 284 // By default, look for the C++ headers in an include directory adjacent to 285 // the lib directory of the GCC installation. 286 // On Solaris this usually looks like /usr/gcc/X.Y/include/c++/X.Y.Z 287 StringRef LibDir = GCCInstallation.getParentLibPath(); 288 StringRef TripleStr = GCCInstallation.getTriple().str(); 289 const Multilib &Multilib = GCCInstallation.getMultilib(); 290 const GCCVersion &Version = GCCInstallation.getVersion(); 291 292 // The primary search for libstdc++ supports multiarch variants. 293 addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 294 TripleStr, Multilib.includeSuffix(), DriverArgs, 295 CC1Args); 296 } 297