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f649599ea9
As for now, 'extract_symbols.py' can use several tools to extract symbols from object files and libraries and to guess if the target is 32-bit Windows. The tools are being found via PATH, so in most cases, they are just system tools. This approach has a number of limitations, in particular: * System tools may not be able to handle the target format in case of cross-platform builds, * They cannot read symbols from LLVM bitcode files, so the staged LTO build with plugins is not supported, * The auto-selected tools may be suboptimal (see D113557), * Support for multiple tools for a single task increases the complexity of the script code. The patch proposes using LLVM's own tools to solve these issues. Specifically, 'llvm-readobj' detects the target platform, and 'llvm-nm' reads symbols from all supported formats, including bitcode files. The tools can be built in Release mode for the host platform or overridden using CMake settings 'LLVM_READOBJ' and 'LLVM_NM' respectively. The implementation also supports using precompiled tools via 'LLVM_NATIVE_TOOL_DIR'. Differential Revision: https://reviews.llvm.org/D149119
40 lines
783 B
CMake
40 lines
783 B
CMake
set(LLVM_LINK_COMPONENTS
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BinaryFormat
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DebugInfoCodeView
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DebugInfoDWARF
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Demangle
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Object
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Option
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Support
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TargetParser
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)
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set(LLVM_TARGET_DEFINITIONS Opts.td)
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tablegen(LLVM Opts.inc -gen-opt-parser-defs)
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add_public_tablegen_target(ReadobjOptsTableGen)
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add_llvm_tool(llvm-readobj
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ARMWinEHPrinter.cpp
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COFFDumper.cpp
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COFFImportDumper.cpp
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ELFDumper.cpp
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llvm-readobj.cpp
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MachODumper.cpp
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ObjDumper.cpp
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WasmDumper.cpp
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Win64EHDumper.cpp
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WindowsResourceDumper.cpp
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XCOFFDumper.cpp
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DEPENDS
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ReadobjOptsTableGen
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GENERATE_DRIVER
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)
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setup_host_tool(llvm-readobj LLVM_READOBJ llvm_readobj_exe llvm_readobj_target)
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add_llvm_tool_symlink(llvm-readelf llvm-readobj)
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if(LLVM_INSTALL_BINUTILS_SYMLINKS)
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add_llvm_tool_symlink(readelf llvm-readobj)
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endif()
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