2080334574
This PR is to improve the driver code to build `flang-rt` path by re-using the logic and code of `compiler-rt`. 1. Moved `addFortranRuntimeLibraryPath` and `addFortranRuntimeLibs` to `ToolChain.h` and made them virtual so that they can be overridden if customization is needed. The current implementation of those two procedures is moved to `ToolChain.cpp` as the base implementation to default to. 2. Both AIX and PPCLinux now override `addFortranRuntimeLibs`. The overriding function of `addFortranRuntimeLibs` for both AIX and PPCLinux calls `getCompilerRTArgString` => `getCompilerRT` => `buildCompilerRTBasename` to get the path to `flang-rt`. This code handles `LLVM_ENABLE_PER_TARGET_RUNTIME_DIR` setting. As shown in `PPCLinux.cpp`, `FT_static` is the default. If not found, it will search and build for `FT_shared`. To differentiate `flang-rt` from `clang-rt`, a boolean flag `IsFortran` is passed to the chain of functions in order to reach `buildCompilerRTBasename`.
107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
//===--- OpenBSD.h - OpenBSD ToolChain Implementations ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_OPENBSD_H
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#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_OPENBSD_H
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#include "Gnu.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Driver/Tool.h"
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#include "clang/Driver/ToolChain.h"
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namespace clang {
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namespace driver {
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namespace tools {
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/// Directly call GNU Binutils assembler and linker
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namespace openbsd {
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class LLVM_LIBRARY_VISIBILITY Assembler final : public Tool {
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public:
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Assembler(const ToolChain &TC)
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: Tool("openbsd::Assembler", "assembler", TC) {}
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bool hasIntegratedCPP() const override { return false; }
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void ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output, const InputInfoList &Inputs,
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const llvm::opt::ArgList &TCArgs,
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const char *LinkingOutput) const override;
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};
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class LLVM_LIBRARY_VISIBILITY Linker final : public Tool {
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public:
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Linker(const ToolChain &TC) : Tool("openbsd::Linker", "linker", TC) {}
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bool hasIntegratedCPP() const override { return false; }
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bool isLinkJob() const override { return true; }
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void ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output, const InputInfoList &Inputs,
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const llvm::opt::ArgList &TCArgs,
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const char *LinkingOutput) const override;
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};
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} // end namespace openbsd
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} // end namespace tools
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namespace toolchains {
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class LLVM_LIBRARY_VISIBILITY OpenBSD : public Generic_ELF {
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public:
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OpenBSD(const Driver &D, const llvm::Triple &Triple,
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const llvm::opt::ArgList &Args);
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bool HasNativeLLVMSupport() const override;
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bool IsMathErrnoDefault() const override { return false; }
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bool IsObjCNonFragileABIDefault() const override { return true; }
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bool isPIEDefault(const llvm::opt::ArgList &Args) const override {
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return true;
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}
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RuntimeLibType GetDefaultRuntimeLibType() const override {
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return ToolChain::RLT_CompilerRT;
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}
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CXXStdlibType GetDefaultCXXStdlibType() const override {
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return ToolChain::CST_Libcxx;
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}
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void
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AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const override;
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void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const override;
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void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
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llvm::opt::ArgStringList &CmdArgs) const override;
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std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component,
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FileType Type = ToolChain::FT_Static,
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bool IsFortran = false) const override;
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UnwindTableLevel
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getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override;
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LangOptions::StackProtectorMode
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GetDefaultStackProtectorLevel(bool KernelOrKext) const override {
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return LangOptions::SSPStrong;
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}
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unsigned GetDefaultDwarfVersion() const override { return 2; }
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SanitizerMask getSupportedSanitizers() const override;
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protected:
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Tool *buildAssembler() const override;
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Tool *buildLinker() const override;
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};
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} // end namespace toolchains
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} // end namespace driver
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} // end namespace clang
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#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_OPENBSD_H
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