f59bec7acb
`clang` currently requires the native linker on Solaris:
- It passes `-C` to `ld` which GNU `ld` doesn't understand.
- To use `gld`, one needs to pass the correct `-m EMU` option to select
the right emulation. Solaris `ld` cannot handle that option.
So far I've worked around this by passing `-DCLANG_DEFAULT_LINKER=/usr/bin/ld`
to `cmake`. However, if someone forgets this, it depends on the user's
`PATH` whether or not `clang` finds the correct linker, which doesn't make
for a good user experience.
While it would be nice to detect the linker flavor at runtime, this is more
involved. Instead, this patch defaults to `/usr/bin/ld` on Solaris. This
doesn't work on its own, however: a link fails with
clang-12: error: unable to execute command: Executable "x86_64-pc-solaris2.11-/usr/bin/ld" doesn't exist!
I avoid this by leaving absolute paths alone in `ToolChain::GetLinkerPath`.
Tested on `amd64-pc-solaris2.11`, `sparcv9-sun-solaris2.11`, and
`x86_64-pc-linux-gnu`.
Differential Revision: https://reviews.llvm.org/D84029
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
//===--- Solaris.h - Solaris 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_SOLARIS_H
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#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_SOLARIS_H
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#include "Gnu.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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/// solaris -- Directly call Solaris assembler and linker
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namespace solaris {
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class LLVM_LIBRARY_VISIBILITY Assembler : public Tool {
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public:
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Assembler(const ToolChain &TC)
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: Tool("solaris::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 : public Tool {
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public:
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Linker(const ToolChain &TC) : Tool("solaris::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 solaris
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} // end namespace tools
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namespace toolchains {
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class LLVM_LIBRARY_VISIBILITY Solaris : public Generic_ELF {
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public:
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Solaris(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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void
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addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const override;
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SanitizerMask getSupportedSanitizers() const override;
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unsigned GetDefaultDwarfVersion() const override { return 2; }
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const char *getDefaultLinker() const override {
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// clang currently uses Solaris ld-only options.
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return "/usr/bin/ld";
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}
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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_SOLARIS_H
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