clang 19.0.0git
DragonFly.cpp
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1//===--- DragonFly.cpp - DragonFly 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 "DragonFly.h"
10#include "CommonArgs.h"
12#include "clang/Driver/Driver.h"
14#include "llvm/Option/ArgList.h"
15#include "llvm/Support/Path.h"
16
17using namespace clang::driver;
18using namespace clang::driver::tools;
19using namespace clang::driver::toolchains;
20using namespace clang;
21using namespace llvm::opt;
22
24 const InputInfo &Output,
25 const InputInfoList &Inputs,
26 const ArgList &Args,
27 const char *LinkingOutput) const {
28 const auto &ToolChain = static_cast<const DragonFly &>(getToolChain());
29 ArgStringList CmdArgs;
30
31 claimNoWarnArgs(Args);
32
33 // When building 32-bit code on DragonFly/pc64, we have to explicitly
34 // instruct as in the base system to assemble 32-bit code.
35 if (ToolChain.getArch() == llvm::Triple::x86)
36 CmdArgs.push_back("--32");
37
38 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
39
40 CmdArgs.push_back("-o");
41 CmdArgs.push_back(Output.getFilename());
42
43 for (const auto &II : Inputs)
44 CmdArgs.push_back(II.getFilename());
45
46 const char *Exec = Args.MakeArgString(ToolChain.GetProgramPath("as"));
47 C.addCommand(std::make_unique<Command>(JA, *this,
49 Exec, CmdArgs, Inputs, Output));
50}
51
53 const InputInfo &Output,
54 const InputInfoList &Inputs,
55 const ArgList &Args,
56 const char *LinkingOutput) const {
57 const auto &ToolChain = static_cast<const DragonFly &>(getToolChain());
58 const Driver &D = ToolChain.getDriver();
59 const llvm::Triple::ArchType Arch = ToolChain.getArch();
60 const bool Static = Args.hasArg(options::OPT_static);
61 const bool Shared = Args.hasArg(options::OPT_shared);
62 const bool Profiling = Args.hasArg(options::OPT_pg);
63 const bool Pie = Args.hasArg(options::OPT_pie);
64 ArgStringList CmdArgs;
65
66 if (!D.SysRoot.empty())
67 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
68
69 CmdArgs.push_back("--eh-frame-hdr");
70 if (Static) {
71 CmdArgs.push_back("-Bstatic");
72 } else {
73 if (Args.hasArg(options::OPT_rdynamic))
74 CmdArgs.push_back("-export-dynamic");
75 if (Shared)
76 CmdArgs.push_back("-shared");
77 else if (!Args.hasArg(options::OPT_r)) {
78 CmdArgs.push_back("-dynamic-linker");
79 CmdArgs.push_back("/usr/libexec/ld-elf.so.2");
80 }
81 CmdArgs.push_back("--hash-style=gnu");
82 CmdArgs.push_back("--enable-new-dtags");
83 }
84
85 // When building 32-bit code on DragonFly/pc64, we have to explicitly
86 // instruct ld in the base system to link 32-bit code.
87 if (Arch == llvm::Triple::x86) {
88 CmdArgs.push_back("-m");
89 CmdArgs.push_back("elf_i386");
90 }
91
92 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
93 if (Output.isFilename()) {
94 CmdArgs.push_back("-o");
95 CmdArgs.push_back(Output.getFilename());
96 }
97
98 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
99 options::OPT_r)) {
100 const char *crt1 = nullptr;
101 const char *crtbegin = nullptr;
102 if (!Shared) {
103 if (Profiling)
104 crt1 = "gcrt1.o";
105 else {
106 if (Pie)
107 crt1 = "Scrt1.o";
108 else
109 crt1 = "crt1.o";
110 }
111 }
112
113 if (Shared || Pie)
114 crtbegin = "crtbeginS.o";
115 else
116 crtbegin = "crtbegin.o";
117
118 if (crt1)
119 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
120 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
121 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
122 }
123
124 Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
125 options::OPT_s, options::OPT_t});
126 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
127
128 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
129
130 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
131 options::OPT_r)) {
132 if (!Static) {
133 CmdArgs.push_back("-rpath");
134 CmdArgs.push_back("/usr/lib/gcc80");
135 }
136
137 // Use the static OpenMP runtime with -static-openmp
138 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && !Static;
139 addOpenMPRuntime(C, CmdArgs, ToolChain, Args, StaticOpenMP);
140
141 if (D.CCCIsCXX()) {
143 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
144 CmdArgs.push_back("-lm");
145 }
146
147 // Silence warnings when linking C code with a C++ '-stdlib' argument.
148 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
149
150 // Additional linker set-up and flags for Fortran. This is required in order
151 // to generate executables. As Fortran runtime depends on the C runtime,
152 // these dependencies need to be listed before the C runtime below (i.e.
153 // AddRunTimeLibs).
154 if (D.IsFlangMode()) {
156 addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
157 CmdArgs.push_back("-lm");
158 }
159
160 if (Args.hasArg(options::OPT_pthread))
161 CmdArgs.push_back("-lpthread");
162
163 if (!Args.hasArg(options::OPT_nolibc))
164 CmdArgs.push_back("-lc");
165
166 if (Static || Args.hasArg(options::OPT_static_libgcc)) {
167 CmdArgs.push_back("-lgcc");
168 CmdArgs.push_back("-lgcc_eh");
169 } else {
170 if (Args.hasArg(options::OPT_shared_libgcc)) {
171 CmdArgs.push_back("-lgcc_pic");
172 if (!Shared)
173 CmdArgs.push_back("-lgcc");
174 } else {
175 CmdArgs.push_back("-lgcc");
176 CmdArgs.push_back("--as-needed");
177 CmdArgs.push_back("-lgcc_pic");
178 CmdArgs.push_back("--no-as-needed");
179 }
180 }
181 }
182
183 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
184 options::OPT_r)) {
185 const char *crtend = nullptr;
186 if (Shared || Pie)
187 crtend ="crtendS.o";
188 else
189 crtend = "crtend.o";
190
191 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
192 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
193 }
194
195 ToolChain.addProfileRTLibs(Args, CmdArgs);
196
197 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
198 C.addCommand(std::make_unique<Command>(JA, *this,
200 Exec, CmdArgs, Inputs, Output));
201}
202
203/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
204
205DragonFly::DragonFly(const Driver &D, const llvm::Triple &Triple,
206 const ArgList &Args)
207 : Generic_ELF(D, Triple, Args) {
208 // Path mangling to find libexec
209 getProgramPaths().push_back(getDriver().Dir);
210
211 getFilePaths().push_back(getDriver().Dir + "/../lib");
212 getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib"));
213 getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib/gcc80"));
214}
215
217 const llvm::opt::ArgList &DriverArgs,
218 llvm::opt::ArgStringList &CC1Args) const {
219 const Driver &D = getDriver();
220
221 if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
222 return;
223
224 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
226 llvm::sys::path::append(Dir, "include");
227 addSystemInclude(DriverArgs, CC1Args, Dir.str());
228 }
229
230 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
231 return;
232
233 addExternCSystemInclude(DriverArgs, CC1Args,
234 concat(D.SysRoot, "/usr/include"));
235}
236
237void DragonFly::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
238 llvm::opt::ArgStringList &CC1Args) const {
239 addLibStdCXXIncludePaths(concat(getDriver().SysRoot, "/usr/include/c++/8.0"), "", "",
240 DriverArgs, CC1Args);
241}
242
244 return new tools::dragonfly::Assembler(*this);
245}
246
248 return new tools::dragonfly::Linker(*this);
249}
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:77
std::string SysRoot
sysroot, if present
Definition: Driver.h:180
std::string ResourceDir
The path to the compiler resource directory.
Definition: Driver.h:164
bool IsFlangMode() const
Whether the driver should invoke flang for fortran inputs.
Definition: Driver.h:226
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:213
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
const char * getFilename() const
Definition: InputInfo.h:83
bool isNothing() const
Definition: InputInfo.h:74
bool isFilename() const
Definition: InputInfo.h:75
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:92
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:1169
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:1271
static void addExternCSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory with extern "C" semantics to CC1 arguments.
Definition: ToolChain.cpp:1184
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:860
path_list & getFilePaths()
Definition: ToolChain.h:295
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:269
const Driver & getDriver() const
Definition: ToolChain.h:253
static std::string concat(StringRef Path, const Twine &A, const Twine &B="", const Twine &C="", const Twine &D="")
Definition: ToolChain.cpp:1208
path_list & getProgramPaths()
Definition: ToolChain.h:298
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:1277
virtual void addProfileRTLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
addProfileRTLibs - When -fprofile-instr-profile is specified, try to pass a suitable profile runtime ...
Definition: ToolChain.cpp:1073
std::string GetLinkerPath(bool *LinkerIsLLD=nullptr) const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name.
Definition: ToolChain.cpp:868
std::string GetProgramPath(const char *Name) const
Definition: ToolChain.cpp:864
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:1296
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
const ToolChain & getToolChain() const
Definition: Tool.h:52
Tool * buildLinker() const override
Definition: DragonFly.cpp:247
void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Definition: DragonFly.cpp:237
void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add the clang cc1 arguments for system include paths.
Definition: DragonFly.cpp:216
DragonFly(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
Definition: DragonFly.cpp:205
Tool * buildAssembler() const override
Definition: DragonFly.cpp:243
bool addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, bool DetectDebian=false) const
Definition: Gnu.cpp:3322
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: DragonFly.cpp:23
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: DragonFly.cpp:52
void addFortranRuntimeLibraryPath(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Adds the path for the Fortran runtime libraries to CmdArgs.
bool addOpenMPRuntime(const Compilation &C, llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool ForceStaticHostRuntime=false, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
void addFortranRuntimeLibs(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Adds Fortran runtime libraries to CmdArgs.
The JSON file list parser is used to communicate input to InstallAPI.
static constexpr ResponseFileSupport AtFileCurCP()
Definition: Job.h:92