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`.
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===--- Mips.h - Mips 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_MIPS_LINUX_H
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#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_MIPS_LINUX_H
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#include "Linux.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 toolchains {
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class LLVM_LIBRARY_VISIBILITY MipsLLVMToolChain : public Linux {
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protected:
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Tool *buildLinker() const override;
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public:
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MipsLLVMToolChain(const Driver &D, const llvm::Triple &Triple,
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const llvm::opt::ArgList &Args);
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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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CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
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void addLibCxxIncludePaths(
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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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std::string computeSysRoot() const override;
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RuntimeLibType GetDefaultRuntimeLibType() const override {
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return GCCInstallation.isValid() ? RuntimeLibType::RLT_Libgcc
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: RuntimeLibType::RLT_CompilerRT;
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}
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const char *getDefaultLinker() const override {
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return "ld.lld";
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}
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private:
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std::string LibSuffix;
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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_MIPS_LINUX_H
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