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使用 llvm-5.0 构建 llvm-6.0.0 时无法向 ../../lib/libLLVMSupport.a 添加符号

tag-icon • tag-icon compiling cmake llvm
使用 llvm-5.0 构建 llvm-6.0.0 时无法向 ../../lib/libLLVMSupport.a 添加符号

以下是有关我的系统和我使用的编译器的信息：

Linux version 4.9.0-5-amd64 ([email protected]) (gcc version 
6.3.0 20170516 (Debian 6.3.0-1
8) ) #1 SMP Debian 4.9.65-3+deb9u2 (2018-01-04)

clang version 5.0.1-svn325091-1~exp1 (branches/release_50)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

我在使用 libcxx 构建 llvm-6.0.0 时遇到问题。我全部下载自llvm下载页面并将源代码放在那里：

llvm-6.0
  build
  llvm-6.0.0
    ...(other stuff)
    tools
      clang
    projects
      libcxx 
      libcxxabi

这是我使用的命令：

#!/bin/bash
#References: https://libcxx.llvm.org/docs/BuildingLibcxx.html
cd build
#The option for llvm starts from line 5, for libcxx starts from line 15
cmake -DCMAKE_BUILD_TYPE=Release                  \
      -DCMAKE_C_COMPILER=clang-5.0                \
      -DCMAKE_CXX_COMPILER=clang++-5.0            \
      -DCMAKE_INSTALL_PREFIX=/usr/local/          \
      -DLLVM_INSTALL_BINUTILS_SYMLINKS=True       \
      -DLLVM_INSTALL_CCTOOLS_SYMLINKS=True        \
      -DLLVM_ENABLE_CXX1Y=True                    \
      -DLLVM_ENABLE_EH=True                       \
      -DLLVM_ENABLE_RTTI=True                     \
      -DLLVM_ENABLE_LTO=Thin                      \
      -DLIBCXX_ENABLE_ASSERTIONS=False            \
      -DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=True  \
      -DLIBCXX_LIBDIR_SUFFIX=/usr/local/lib       \
      -DLIBCXX_BENCHMARK_NATIVE_STDLIB="libstdc++"\
      -G Unix Makefiles                           \
      ..
cmake --build .

cmake 给出：

[  0%] Building CXX object lib/Demangle/CMakeFiles/LLVMDemangle.dir/ItaniumDemangle.cpp.o
[  0%] Linking CXX static library ../libLLVMDemangle.a
[  0%] Built target LLVMDemangle
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/AMDGPUMetadata.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APInt.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/APSInt.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ARMBuildAttrs.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ARMAttributeParser.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ARMWinEH.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Allocator.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamError.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamReader.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamRef.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BinaryStreamWriter.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BlockFrequency.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/BranchProbability.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CachePruning.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/circular_raw_ostream.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Chrono.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/COM.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CodeGenCoverage.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Compression.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ConvertUTF.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ConvertUTFWrapper.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/CrashRecoveryContext.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DataExtractor.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Debug.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DebugCounter.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DeltaAlgorithm.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DAGDeltaAlgorithm.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Error.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ErrorHandling.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FileUtilities.cpp.o
[  0%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FileOutputBuffer.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FoldingSet.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FormattedStream.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/FormatVariadic.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/GlobPattern.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/GraphWriter.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Hashing.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/IntEqClasses.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/IntervalMap.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/JamCRC.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/KnownBits.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/LEB128.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/LineIterator.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Locale.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/LockFileManager.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/LowLevelType.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ManagedStatic.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/MathExtras.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/MemoryBuffer.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/MD5.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/NativeFormatting.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Options.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Parallel.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/PluginLoader.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/PrettyStackTrace.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/RandomNumberGenerator.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Regex.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ScaledNumber.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ScopedPrinter.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SHA1.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SmallPtrSet.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SmallVector.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SourceMgr.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SpecialCaseList.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Statistic.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringExtras.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringMap.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringPool.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringSaver.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/StringRef.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/SystemUtils.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TarWriter.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TargetParser.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ThreadPool.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Timer.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ToolOutputFile.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TrigramIndex.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Triple.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Twine.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Unicode.cpp.o
[  1%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/YAMLParser.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/YAMLTraits.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/raw_os_ostream.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/raw_ostream.cpp.o
[  2%] Building C object lib/Support/CMakeFiles/LLVMSupport.dir/regcomp.c.o
[  2%] Building C object lib/Support/CMakeFiles/LLVMSupport.dir/regerror.c.o
[  2%] Building C object lib/Support/CMakeFiles/LLVMSupport.dir/regexec.c.o
[  2%] Building C object lib/Support/CMakeFiles/LLVMSupport.dir/regfree.c.o
[  2%] Building C object lib/Support/CMakeFiles/LLVMSupport.dir/regstrlcpy.c.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/xxhash.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Atomic.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/DynamicLibrary.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Errno.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Host.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Memory.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Mutex.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Path.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Process.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Program.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/RWMutex.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/TargetRegistry.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/ThreadLocal.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Threading.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Valgrind.cpp.o
[  2%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Watchdog.cpp.o
[  2%] Linking CXX static library ../libLLVMSupport.a
[  2%] Built target LLVMSupport
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/Error.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/Main.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/Record.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/SetTheory.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/StringMatcher.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/TableGenBackend.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/TGLexer.cpp.o
[  2%] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/TGParser.cpp.o
[  2%] Linking CXX static library ../libLLVMTableGen.a
[  2%] Built target LLVMTableGen
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/AsmMatcherEmitter.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/AsmWriterEmitter.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/AsmWriterInst.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/Attributes.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CallingConvEmitter.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeEmitterGen.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenDAGPatterns.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenHwModes.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenInstruction.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenMapTable.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenRegisters.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenSchedule.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CodeGenTarget.cpp.o
[  2%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DAGISelEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherGen.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherOpt.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcher.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DFAPacketizerEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/DisassemblerEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/FastISelEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/FixedLenDecoderEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/GlobalISelEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/InfoByHwMode.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/InstrInfoEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/InstrDocsEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/IntrinsicEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/OptParserEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/PseudoLoweringEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/RegisterBankEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/RegisterInfoEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/SDNodeProperties.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/SearchableTableEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/SubtargetEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/SubtargetFeatureInfo.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/TableGen.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/Types.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86DisassemblerTables.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86EVEX2VEXTablesEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86FoldTablesEmitter.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86ModRMFilters.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/X86RecognizableInstr.cpp.o
[  4%] Building CXX object utils/TableGen/CMakeFiles/obj.llvm-tblgen.dir/CTagsEmitter.cpp.o
[  4%] Built target obj.llvm-tblgen
[  4%] Linking CXX executable ../../bin/llvm-tblgen
../../lib/libLLVMSupport.a: error adding symbols: Archive has no index; run ranlib to add one
clang: error: linker command failed with exit code 1 (use -v to see invocation)
utils/TableGen/CMakeFiles/llvm-tblgen.dir/build.make:158: recipe for target 'bin/llvm-tblgen' failed
make[2]: *** [bin/llvm-tblgen] Error 1
CMakeFiles/Makefile2:906: recipe for target 'utils/TableGen/CMakeFiles/llvm-tblgen.dir/all' failed
make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2

我尝试通过以下方式解决这个问题：

  1. 用于 cmake --build . --target clean删除构建的文件并cmake --build .再次运行。

  2. 按照上面给出的说明进行操作，将目录更改为 lib，然后运行ranlib libLLVMSupport.a​​.

但这些都不起作用：我cmake --build .再次运行，他们给出了：

[  0%] Built target LLVMDemangle
[  2%] Built target LLVMSupport
[  2%] Built target LLVMTableGen
[  4%] Built target obj.llvm-tblgen
[  4%] Linking CXX executable ../../bin/llvm-tblgen
../../lib/libLLVMSupport.a: error adding symbols: Archive has no index; 
run ranlib to add one
clang: error: linker command failed with exit code 1 (use -v to see 
invocation)
utils/TableGen/CMakeFiles/llvm-tblgen.dir/build.make:158: recipe for 
target 'bin/llvm-tblgen' failed
make[2]: *** [bin/llvm-tblgen] Error 1
CMakeFiles/Makefile2:906: recipe for target 
'utils/TableGen/CMakeFiles/llvm-tblgen.dir/all' failed
make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2

我检查了方法2中lib/libLLVMSupport.a的时间戳，发现它没有改变，意味着它没有被.a重新生成cmake --build .。

如何解决这个问题？

答案1

为什么不将档案作为单独的文件保留？然后将应用程序链接到所有所需的存档。

答案2

我终于找到了导致此错误的真正原因。

cmake使用的是gnu gold linker，而archieve libLLVMSupport.a是由LLVM IR代码组成的，难怪会出错。

当我改用 ld.lld-5.0 后，所有错误都消失了。

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