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llvm-project/clang/lib/Driver/ToolChains/MinGW.cpp
David L. Jones f561abab56 [Driver] Consolidate tools and toolchains by target platform. (NFC) 
Summary:
(This is a move-only refactoring patch. There are no functionality changes.)

This patch splits apart the Clang driver's tool and toolchain implementation
files. Each target platform toolchain is moved to its own file, along with the
closest-related tools. Each target platform toolchain has separate headers and
implementation files, so the hierarchy of classes is unchanged.

There are some remaining shared free functions, mostly from Tools.cpp. Several
of these move to their own architecture-specific files, similar to r296056. Some
of them are only used by a single target platform; since the tools and
toolchains are now together, some helpers now live in a platform-specific file.
The balance are helpers related to manipulating argument lists, so they are now
in a new file pair, CommonArgs.h and .cpp.

I've tried to cluster the code logically, which is fairly straightforward for
most of the target platforms and shared architectures. I think I've made
reasonable choices for these, as well as the various shared helpers; but of
course, I'm happy to hear feedback in the review.

There are some particular things I don't like about this patch, but haven't been
able to find a better overall solution. The first is the proliferation of files:
there are several files that are tiny because the toolchain is not very
different from its base (usually the Gnu tools/toolchain). I think this is
mostly a reflection of the true complexity, though, so it may not be "fixable"
in any reasonable sense. The second thing I don't like are the includes like
"../Something.h". I've avoided this largely by clustering into the current file
structure. However, a few of these includes remain, and in those cases it
doesn't make sense to me to sink an existing file any deeper.

Reviewers: rsmith, mehdi_amini, compnerd, rnk, javed.absar

Subscribers: emaste, jfb, danalbert, srhines, dschuff, jyknight, nemanjai, nhaehnle, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D30372

llvm-svn: 297250
2017-03-08 01:02:16 +00:00

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//===--- MinGW.cpp - MinGWToolChain Implementation ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "MinGW.h"
#include "InputInfo.h"
#include "CommonArgs.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include <system_error>
using namespace clang::diag;
using namespace clang::driver;
using namespace clang;
using namespace llvm::opt;
/// MinGW Tools
void tools::MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
claimNoWarnArgs(Args);
ArgStringList CmdArgs;
if (getToolChain().getArch() == llvm::Triple::x86) {
CmdArgs.push_back("--32");
} else if (getToolChain().getArch() == llvm::Triple::x86_64) {
CmdArgs.push_back("--64");
}
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
if (Args.hasArg(options::OPT_gsplit_dwarf))
SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
SplitDebugName(Args, Inputs[0]));
}
void tools::MinGW::Linker::AddLibGCC(const ArgList &Args,
ArgStringList &CmdArgs) const {
if (Args.hasArg(options::OPT_mthreads))
CmdArgs.push_back("-lmingwthrd");
CmdArgs.push_back("-lmingw32");
// Make use of compiler-rt if --rtlib option is used
ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
if (RLT == ToolChain::RLT_Libgcc) {
bool Static = Args.hasArg(options::OPT_static_libgcc) ||
Args.hasArg(options::OPT_static);
bool Shared = Args.hasArg(options::OPT_shared);
bool CXX = getToolChain().getDriver().CCCIsCXX();
if (Static || (!CXX && !Shared)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lgcc_eh");
} else {
CmdArgs.push_back("-lgcc_s");
CmdArgs.push_back("-lgcc");
}
} else {
AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
}
CmdArgs.push_back("-lmoldname");
CmdArgs.push_back("-lmingwex");
CmdArgs.push_back("-lmsvcrt");
}
void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const ToolChain &TC = getToolChain();
const Driver &D = TC.getDriver();
// const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
ArgStringList CmdArgs;
// Silence warning for "clang -g foo.o -o foo"
Args.ClaimAllArgs(options::OPT_g_Group);
// and "clang -emit-llvm foo.o -o foo"
Args.ClaimAllArgs(options::OPT_emit_llvm);
// and for "clang -w foo.o -o foo". Other warning options are already
// handled somewhere else.
Args.ClaimAllArgs(options::OPT_w);
StringRef LinkerName = Args.getLastArgValue(options::OPT_fuse_ld_EQ, "ld");
if (LinkerName.equals_lower("lld")) {
CmdArgs.push_back("-flavor");
CmdArgs.push_back("gnu");
} else if (!LinkerName.equals_lower("ld")) {
D.Diag(diag::err_drv_unsupported_linker) << LinkerName;
}
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
if (Args.hasArg(options::OPT_s))
CmdArgs.push_back("-s");
CmdArgs.push_back("-m");
if (TC.getArch() == llvm::Triple::x86)
CmdArgs.push_back("i386pe");
if (TC.getArch() == llvm::Triple::x86_64)
CmdArgs.push_back("i386pep");
if (TC.getArch() == llvm::Triple::arm)
CmdArgs.push_back("thumb2pe");
if (Args.hasArg(options::OPT_mwindows)) {
CmdArgs.push_back("--subsystem");
CmdArgs.push_back("windows");
} else if (Args.hasArg(options::OPT_mconsole)) {
CmdArgs.push_back("--subsystem");
CmdArgs.push_back("console");
}
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("-Bstatic");
else {
if (Args.hasArg(options::OPT_mdll))
CmdArgs.push_back("--dll");
else if (Args.hasArg(options::OPT_shared))
CmdArgs.push_back("--shared");
CmdArgs.push_back("-Bdynamic");
if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
CmdArgs.push_back("-e");
if (TC.getArch() == llvm::Triple::x86)
CmdArgs.push_back("_DllMainCRTStartup@12");
else
CmdArgs.push_back("DllMainCRTStartup");
CmdArgs.push_back("--enable-auto-image-base");
}
}
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
Args.AddAllArgs(CmdArgs, options::OPT_e);
// FIXME: add -N, -n flags
Args.AddLastArg(CmdArgs, options::OPT_r);
Args.AddLastArg(CmdArgs, options::OPT_s);
Args.AddLastArg(CmdArgs, options::OPT_t);
Args.AddAllArgs(CmdArgs, options::OPT_u_Group);
Args.AddLastArg(CmdArgs, options::OPT_Z_Flag);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));
} else {
if (Args.hasArg(options::OPT_municode))
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));
else
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));
}
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
}
Args.AddAllArgs(CmdArgs, options::OPT_L);
TC.AddFilePathLibArgs(Args, CmdArgs);
AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);
// TODO: Add ASan stuff here
// TODO: Add profile stuff here
if (D.CCCIsCXX() &&
!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
!Args.hasArg(options::OPT_static);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bstatic");
TC.AddCXXStdlibLibArgs(Args, CmdArgs);
if (OnlyLibstdcxxStatic)
CmdArgs.push_back("-Bdynamic");
}
if (!Args.hasArg(options::OPT_nostdlib)) {
if (!Args.hasArg(options::OPT_nodefaultlibs)) {
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--start-group");
if (Args.hasArg(options::OPT_fstack_protector) ||
Args.hasArg(options::OPT_fstack_protector_strong) ||
Args.hasArg(options::OPT_fstack_protector_all)) {
CmdArgs.push_back("-lssp_nonshared");
CmdArgs.push_back("-lssp");
}
if (Args.hasArg(options::OPT_fopenmp))
CmdArgs.push_back("-lgomp");
AddLibGCC(Args, CmdArgs);
if (Args.hasArg(options::OPT_pg))
CmdArgs.push_back("-lgmon");
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
// add system libraries
if (Args.hasArg(options::OPT_mwindows)) {
CmdArgs.push_back("-lgdi32");
CmdArgs.push_back("-lcomdlg32");
}
CmdArgs.push_back("-ladvapi32");
CmdArgs.push_back("-lshell32");
CmdArgs.push_back("-luser32");
CmdArgs.push_back("-lkernel32");
if (Args.hasArg(options::OPT_static))
CmdArgs.push_back("--end-group");
else if (!LinkerName.equals_lower("lld"))
AddLibGCC(Args, CmdArgs);
}
if (!Args.hasArg(options::OPT_nostartfiles)) {
// Add crtfastmath.o if available and fast math is enabled.
TC.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
}
}
const char *Exec = Args.MakeArgString(TC.GetProgramPath(LinkerName.data()));
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
// Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.
static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,
std::string &Ver) {
auto Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");
std::error_code EC;
for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;
LI = LI.increment(EC)) {
StringRef VersionText = llvm::sys::path::filename(LI->path());
auto CandidateVersion =
toolchains::Generic_GCC::GCCVersion::Parse(VersionText);
if (CandidateVersion.Major == -1)
continue;
if (CandidateVersion <= Version)
continue;
Ver = VersionText;
GccLibDir = LI->path();
}
return Ver.size();
}
void toolchains::MinGW::findGccLibDir() {
llvm::SmallVector<llvm::SmallString<32>, 2> Archs;
Archs.emplace_back(getTriple().getArchName());
Archs[0] += "-w64-mingw32";
Archs.emplace_back("mingw32");
Arch = Archs[0].str();
// lib: Arch Linux, Ubuntu, Windows
// lib64: openSUSE Linux
for (StringRef CandidateLib : {"lib", "lib64"}) {
for (StringRef CandidateArch : Archs) {
llvm::SmallString<1024> LibDir(Base);
llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateArch);
if (findGccVersion(LibDir, GccLibDir, Ver)) {
Arch = CandidateArch;
return;
}
}
}
}
toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args) {
getProgramPaths().push_back(getDriver().getInstalledDir());
// In Windows there aren't any standard install locations, we search
// for gcc on the PATH. In Linux the base is always /usr.
#ifdef LLVM_ON_WIN32
if (getDriver().SysRoot.size())
Base = getDriver().SysRoot;
else if (llvm::ErrorOr<std::string> GPPName =
llvm::sys::findProgramByName("gcc"))
Base = llvm::sys::path::parent_path(
llvm::sys::path::parent_path(GPPName.get()));
else
Base = llvm::sys::path::parent_path(getDriver().getInstalledDir());
#else
if (getDriver().SysRoot.size())
Base = getDriver().SysRoot;
else
Base = "/usr";
#endif
Base += llvm::sys::path::get_separator();
findGccLibDir();
// GccLibDir must precede Base/lib so that the
// correct crtbegin.o ,cetend.o would be found.
getFilePaths().push_back(GccLibDir);
getFilePaths().push_back(
(Base + Arch + llvm::sys::path::get_separator() + "lib").str());
getFilePaths().push_back(Base + "lib");
// openSUSE
getFilePaths().push_back(Base + Arch + "/sys-root/mingw/lib");
}
bool toolchains::MinGW::IsIntegratedAssemblerDefault() const { return true; }
Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {
switch (AC) {
case Action::PreprocessJobClass:
if (!Preprocessor)
Preprocessor.reset(new tools::gcc::Preprocessor(*this));
return Preprocessor.get();
case Action::CompileJobClass:
if (!Compiler)
Compiler.reset(new tools::gcc::Compiler(*this));
return Compiler.get();
default:
return ToolChain::getTool(AC);
}
}
Tool *toolchains::MinGW::buildAssembler() const {
return new tools::MinGW::Assembler(*this);
}
Tool *toolchains::MinGW::buildLinker() const {
return new tools::MinGW::Linker(*this);
}
bool toolchains::MinGW::IsUnwindTablesDefault() const {
return getArch() == llvm::Triple::x86_64;
}
bool toolchains::MinGW::isPICDefault() const {
return getArch() == llvm::Triple::x86_64;
}
bool toolchains::MinGW::isPIEDefault() const { return false; }
bool toolchains::MinGW::isPICDefaultForced() const {
return getArch() == llvm::Triple::x86_64;
}
bool toolchains::MinGW::UseSEHExceptions() const {
return getArch() == llvm::Triple::x86_64;
}
void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
}
void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {
CudaInstallation.print(OS);
}
// Include directories for various hosts:
// Windows, mingw.org
// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++
// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32
// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward
// c:\mingw\include
// c:\mingw\mingw32\include
// Windows, mingw-w64 mingw-builds
// c:\mingw32\i686-w64-mingw32\include
// c:\mingw32\i686-w64-mingw32\include\c++
// c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32
// c:\mingw32\i686-w64-mingw32\include\c++\backward
// Windows, mingw-w64 msys2
// c:\msys64\mingw32\include
// c:\msys64\mingw32\i686-w64-mingw32\include
// c:\msys64\mingw32\include\c++\4.9.2
// c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32
// c:\msys64\mingw32\include\c++\4.9.2\backward
// openSUSE
// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++
// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32
// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward
// /usr/x86_64-w64-mingw32/sys-root/mingw/include
// Arch Linux
// /usr/i686-w64-mingw32/include/c++/5.1.0
// /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32
// /usr/i686-w64-mingw32/include/c++/5.1.0/backward
// /usr/i686-w64-mingw32/include
// Ubuntu
// /usr/include/c++/4.8
// /usr/include/c++/4.8/x86_64-w64-mingw32
// /usr/include/c++/4.8/backward
// /usr/x86_64-w64-mingw32/include
void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
if (DriverArgs.hasArg(options::OPT_nostdinc))
return;
if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
SmallString<1024> P(getDriver().ResourceDir);
llvm::sys::path::append(P, "include");
addSystemInclude(DriverArgs, CC1Args, P.str());
}
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
if (GetRuntimeLibType(DriverArgs) == ToolChain::RLT_Libgcc) {
// openSUSE
addSystemInclude(DriverArgs, CC1Args,
Base + Arch + "/sys-root/mingw/include");
}
addSystemInclude(DriverArgs, CC1Args,
Base + Arch + llvm::sys::path::get_separator() + "include");
addSystemInclude(DriverArgs, CC1Args, Base + "include");
}
void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(
const ArgList &DriverArgs, ArgStringList &CC1Args) const {
if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
DriverArgs.hasArg(options::OPT_nostdincxx))
return;
switch (GetCXXStdlibType(DriverArgs)) {
case ToolChain::CST_Libcxx:
addSystemInclude(DriverArgs, CC1Args,
Base + "include" + llvm::sys::path::get_separator() +
"c++" + llvm::sys::path::get_separator() + "v1");
break;
case ToolChain::CST_Libstdcxx:
llvm::SmallVector<llvm::SmallString<1024>, 4> CppIncludeBases;
CppIncludeBases.emplace_back(Base);
llvm::sys::path::append(CppIncludeBases[0], Arch, "include", "c++");
CppIncludeBases.emplace_back(Base);
llvm::sys::path::append(CppIncludeBases[1], Arch, "include", "c++", Ver);
CppIncludeBases.emplace_back(Base);
llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);
CppIncludeBases.emplace_back(GccLibDir);
llvm::sys::path::append(CppIncludeBases[3], "include", "c++");
for (auto &CppIncludeBase : CppIncludeBases) {
addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);
CppIncludeBase += llvm::sys::path::get_separator();
addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + Arch);
addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");
}
break;
}
}
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