如何使用clang++进行编译

How to compile using clang++?

本文关键字：编译 clang++ 何使用更新时间：2023-10-16

我正在构建一个简单的解析器(用c++编写以扩展clang AST)基于clang &在OS X Yosemite上运行llvm。我在我的主目录下下载了clang和llvm的源代码(~/clang-llvm/llvm是源代码，~/clang-llvm/build是构建目录)，并使用cmake &。

一个示例解析器，例如，包括clang源文件:

#include "clang/AST/AST.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Tooling/CommonOptionsParser.h"
#include "clang/Tooling/Tooling.h"
#include "clang/Rewrite/Core/Rewriter.h"
#include "llvm/Support/raw_ostream.h"

使用clang的AST匹配特性。但是当我尝试使用clang++编译它时，我得到如下错误

Undefined symbols for architecture x86_64:
  "llvm::RefCountedBaseVPTR::anchor()", referenced from:
      vtable for clang::ast_matchers::internal::matcher_isPublicMatcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_isProtectedMatcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_isPrivateMatcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_isImplicitMatcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_ignoringImpCasts0Matcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_ignoringParenCasts0Matcher in matchers_rewriter-b01682.o
      vtable for clang::ast_matchers::internal::matcher_ignoringParenImpCasts0Matcher in matchers_rewriter-b01682.o
      ...
  "llvm::cl::OptionCategory::registerCategory()", referenced from:
      llvm::cl::OptionCategory::OptionCategory(char const*, char const*) in matchers_rewriter-b01682.o
  "llvm::outs()", referenced from:
<<OMITTED>>
"typeinfo for clang::ASTFrontendAction", referenced from:
      typeinfo for MyFrontendAction in matchers_rewriter-b01682.o
  "typeinfo for clang::tooling::FrontendActionFactory", referenced from:
      typeinfo for std::__1::unique_ptr<clang::tooling::FrontendActionFactory, std::__1::default_delete<clang::tooling::FrontendActionFactory> > clang::tooling::newFrontendActionFactory<MyFrontendAction>()::SimpleFrontendActionFactory in matchers_rewriter-b01682.o
  "vtable for llvm::RefCountedBaseVPTR", referenced from:
      llvm::RefCountedBaseVPTR::RefCountedBaseVPTR() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for clang::ASTConsumer", referenced from:
      clang::ASTConsumer::ASTConsumer() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for clang::ast_matchers::MatchFinder::MatchCallback", referenced from:
      clang::ast_matchers::MatchFinder::MatchCallback::MatchCallback() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for clang::ASTFrontendAction", referenced from:
      clang::ASTFrontendAction::ASTFrontendAction() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for clang::tooling::ToolAction", referenced from:
      clang::tooling::ToolAction::ToolAction() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "vtable for clang::tooling::FrontendActionFactory", referenced from:
      clang::tooling::FrontendActionFactory::FrontendActionFactory() in matchers_rewriter-b01682.o
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我使用的编译选项如下

clang++ -fno-rtti -O0 -std=c++11 -g -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS `/Users/me/clang-llvm/build/Debug+Asserts/bin/llvm-config --cxxflags`

似乎编译器需要。o或。a文件的clang &llvm。我是否需要提供更多选项或指定它们的任何路径?我尝试添加-I /Users/me/clang-llvm/build/Debug+Asserts/lib，其中编译的文件存在，但它也没有工作。

我希望你得到一个更好的答案，因为据我所知，llvm-config工具是坏的。

我只能通过链接所有clang lib文件夹(在我的平台上是/usr/lib64/llvm/)中的clang 静态库来实现这个工作。

CLANG_LIBS = 
    -L/usr/lib64/llvm 
    -lclang 
    -llldb 
    -lLLVM-3.5 
    /usr/lib64/llvm/libclangFrontend.a 
    /usr/lib64/llvm/libllvm.a 
    /usr/lib64/llvm/libLLVMInstrumentation.a 
    /usr/lib64/llvm/libLLVMAArch64Desc.a 
    /usr/lib64/llvm/libclangASTMatchers.a 
    /usr/lib64/llvm/libLLVMRuntimeDyld.a 
    /usr/lib64/llvm/libLLVMLTO.a 
    /usr/lib64/llvm/liblldbUtility.a 
    /usr/lib64/llvm/libLLVMR600Info.a 
    /usr/lib64/llvm/libllvm_R600.a 
    /usr/lib64/llvm/libllvm_bitwriter.a 
    /usr/lib64/llvm/libLLVMAsmParser.a 
    /usr/lib64/llvm/libLLVMTransformUtils.a 
    /usr/lib64/llvm/libLLVMR600CodeGen.a 
    /usr/lib64/llvm/liblldbPluginPlatformFreeBSD.a 
    /usr/lib64/llvm/liblldbHostLinux.a 
    /usr/lib64/llvm/liblldbPluginPlatformKalimba.a 
    /usr/lib64/llvm/libLLVMX86CodeGen.a 
    /usr/lib64/llvm/liblldbPluginJITLoaderGDB.a 
    /usr/lib64/llvm/libLLVMARMInfo.a 
    /usr/lib64/llvm/libLLVMR600Desc.a 
    /usr/lib64/llvm/libLLVMX86Disassembler.a 
    /usr/lib64/llvm/libclangTooling.a 
    /usr/lib64/llvm/libLLVMNVPTXAsmPrinter.a 
    /usr/lib64/llvm/libLLVMMCDisassembler.a 
    /usr/lib64/llvm/liblldbPluginABISysV_x86_64.a 
    /usr/lib64/llvm/liblldbInterpreter.a 
    /usr/lib64/llvm/liblldbPluginObjectContainerBSDArchive.a 
    /usr/lib64/llvm/liblldbCore.a 
    /usr/lib64/llvm/libLLVMNVPTXInfo.a 
    /usr/lib64/llvm/libLLVMMC.a 
    /usr/lib64/llvm/libLLVMAArch64Utils.a 
    /usr/lib64/llvm/liblldbPluginLanguageRuntimeObjCAppleObjCRuntime.a 
    /usr/lib64/llvm/libclangFrontendTool.a 
    /usr/lib64/llvm/libLLVMObject.a 
    /usr/lib64/llvm/liblldbBreakpoint.a 
    /usr/lib64/llvm/liblldbPluginPlatformWindows.a 
    /usr/lib64/llvm/libLLVMAnalysis.a 
    /usr/lib64/llvm/libLLVMSystemZDisassembler.a 
    /usr/lib64/llvm/libLLVMNVPTXCodeGen.a 
    /usr/lib64/llvm/libllvm_analysis.a 
    /usr/lib64/llvm/libLLVMInterpreter.a 
    /usr/lib64/llvm/libclang.a 
    /usr/lib64/llvm/libclangRewrite.a 
    /usr/lib64/llvm/libLLVMARMAsmParser.a 
    /usr/lib64/llvm/liblldbCommands.a 
    /usr/lib64/llvm/liblldbPluginSymbolFileSymtab.a 
    /usr/lib64/llvm/libclangDynamicASTMatchers.a 
    /usr/lib64/llvm/liblldbPluginProcessPOSIX.a 
    /usr/lib64/llvm/libclangSema.a 
    /usr/lib64/llvm/liblldbPluginProcessElfCore.a 
    /usr/lib64/llvm/liblldbHostCommon.a 
    /usr/lib64/llvm/libllvm_scalar_opts.a 
    /usr/lib64/llvm/libLLVMLineEditor.a 
    /usr/lib64/llvm/libllvm_irreader.a 
    /usr/lib64/llvm/liblldbPluginPlatformPOSIX.a 
    /usr/lib64/llvm/libLLVMAArch64AsmPrinter.a 
    /usr/lib64/llvm/libLLVMScalarOpts.a 
    /usr/lib64/llvm/libLLVMX86Desc.a 
    /usr/lib64/llvm/libLLVMX86AsmPrinter.a 
    /usr/lib64/llvm/libclangBasic.a 
    /usr/lib64/llvm/libclangFormat.a 
    /usr/lib64/llvm/libLLVMLinker.a 
    /usr/lib64/llvm/liblldbSymbol.a 
    /usr/lib64/llvm/libLLVMMCParser.a 
    /usr/lib64/llvm/liblldbPluginABIMacOSX_arm64.a 
    /usr/lib64/llvm/libLLVMPowerPCDisassembler.a 
    /usr/lib64/llvm/liblldbPluginEmulateInstructionARM.a 
    /usr/lib64/llvm/libclangEdit.a 
    /usr/lib64/llvm/libLLVMARMCodeGen.a 
    /usr/lib64/llvm/libLLVMPowerPCInfo.a 
    /usr/lib64/llvm/libLLVMipo.a 
    /usr/lib64/llvm/libLLVMCore.a 
    /usr/lib64/llvm/libllvm_passmgr_builder.a 
    /usr/lib64/llvm/libLLVMARMAsmPrinter.a 
    /usr/lib64/llvm/libllvm_executionengine.a 
    /usr/lib64/llvm/liblldbPluginDynamicLoaderPOSIX.a 
    /usr/lib64/llvm/libLLVMARMDisassembler.a 
    /usr/lib64/llvm/liblldbPluginProcessGDBRemote.a 
    /usr/lib64/llvm/libllvm_X86.a 
    /usr/lib64/llvm/liblldbPluginABIMacOSX_arm.a 
    /usr/lib64/llvm/liblldbAPI.a 
    /usr/lib64/llvm/libLLVMAsmPrinter.a 
    /usr/lib64/llvm/libclangCodeGen.a 
    /usr/lib64/llvm/libclangDriver.a 
    /usr/lib64/llvm/libLLVMExecutionEngine.a 
    /usr/lib64/llvm/liblldbExpression.a 
    /usr/lib64/llvm/liblldbPluginPlatformLinux.a 
    /usr/lib64/llvm/libllvm_vectorize.a 
    /usr/lib64/llvm/libLLVMX86Utils.a 
    /usr/lib64/llvm/liblldbPluginObjectFilePECOFF.a 
    /usr/lib64/llvm/liblldbPluginDynamicLoaderStatic.a 
    /usr/lib64/llvm/libLLVMMCAnalysis.a 
    /usr/lib64/llvm/libLLVMPowerPCAsmParser.a 
    /usr/lib64/llvm/libLLVMipa.a 
    /usr/lib64/llvm/liblldbPluginDynamicLoaderHexagon.a 
    /usr/lib64/llvm/libclangParse.a 
    /usr/lib64/llvm/libLLVMNVPTXDesc.a 
    /usr/lib64/llvm/libLLVMAArch64AsmParser.a 
    /usr/lib64/llvm/libclangLex.a 
    /usr/lib64/llvm/libLLVMPowerPCDesc.a 
    /usr/lib64/llvm/liblldbPluginPlatformGDBServer.a 
    /usr/lib64/llvm/libLLVMJIT.a 
    /usr/lib64/llvm/libLLVMAArch64Disassembler.a 
    /usr/lib64/llvm/libllvm_target.a 
    /usr/lib64/llvm/liblldbPluginDynamicLoaderMacOSX.a 
    /usr/lib64/llvm/liblldbPluginUnwindAssemblyInstEmulation.a 
    /usr/lib64/llvm/libLLVMBitWriter.a 
    /usr/lib64/llvm/libLLVMSelectionDAG.a 
    /usr/lib64/llvm/libLLVMOption.a 
    /usr/lib64/llvm/libLLVMSystemZCodeGen.a 
    /usr/lib64/llvm/libclangStaticAnalyzerCheckers.a 
    /usr/lib64/llvm/libllvm_AArch64.a 
    /usr/lib64/llvm/libllvm_ARM.a 
    /usr/lib64/llvm/libLLVMR600AsmPrinter.a 
    /usr/lib64/llvm/libLLVMSystemZInfo.a 
    /usr/lib64/llvm/libLLVMAArch64CodeGen.a 
    /usr/lib64/llvm/libLLVMSystemZAsmParser.a 
    /usr/lib64/llvm/libLLVMCppBackendCodeGen.a 
    /usr/lib64/llvm/libllvm_bitreader.a 
    /usr/lib64/llvm/libLLVMBitReader.a 
    /usr/lib64/llvm/libLLVMIRReader.a 
    /usr/lib64/llvm/libclangIndex.a 
    /usr/lib64/llvm/libLLVMObjCARCOpts.a 
    /usr/lib64/llvm/libLLVMPowerPCAsmPrinter.a 
    /usr/lib64/llvm/libLLVMCppBackendInfo.a 
    /usr/lib64/llvm/libLLVMAArch64Info.a 
    /usr/lib64/llvm/libllvm_CppBackend.a 
    /usr/lib64/llvm/liblldbPluginObjectFileJIT.a 
    /usr/lib64/llvm/libLLVMMCJIT.a 
    /usr/lib64/llvm/liblldbDataFormatters.a 
    /usr/lib64/llvm/liblldbPluginABIMacOSX_i386.a 
    /usr/lib64/llvm/libLLVMX86Info.a 
    /usr/lib64/llvm/libLTO.a 
    /usr/lib64/llvm/liblldbPluginLanguageRuntimeCPlusPlusItaniumABI.a 
    /usr/lib64/llvm/libclangStaticAnalyzerFrontend.a 
    /usr/lib64/llvm/libLLVMX86AsmParser.a 
    /usr/lib64/llvm/liblldbPluginObjectFileELF.a 
    /usr/lib64/llvm/libclangAST.a 
    /usr/lib64/llvm/libllvm_ipo.a 
    /usr/lib64/llvm/libLLVMProfileData.a 
    /usr/lib64/llvm/libLLVMSystemZDesc.a 
    /usr/lib64/llvm/libLLVMPowerPCCodeGen.a 
    /usr/lib64/llvm/libclangAnalysis.a 
    /usr/lib64/llvm/libLLVMSupport.a 
    /usr/lib64/llvm/liblldbPluginProcessLinux.a 
    /usr/lib64/llvm/liblldbTarget.a 
    /usr/lib64/llvm/libclangARCMigrate.a 
    /usr/lib64/llvm/libLLVMTarget.a 
    /usr/lib64/llvm/liblldbPluginUnwindAssemblyx86.a 
    /usr/lib64/llvm/libLLVMSystemZAsmPrinter.a 
    /usr/lib64/llvm/liblldbPluginUtility.a 
    /usr/lib64/llvm/libclangStaticAnalyzerCore.a 
    /usr/lib64/llvm/libclangSerialization.a 
    /usr/lib64/llvm/libLLVMVectorize.a 
    /usr/lib64/llvm/libclangRewriteFrontend.a 
    /usr/lib64/llvm/liblldbPluginOperatingSystemPython.a 
    /usr/lib64/llvm/libllvm_linker.a 
    /usr/lib64/llvm/liblldbInitAndLog.a 
    /usr/lib64/llvm/libllvm_all_backends.a 
    /usr/lib64/llvm/liblldbPluginDisassemblerLLVM.a 
    /usr/lib64/llvm/libllvm_NVPTX.a 
    /usr/lib64/llvm/libLLVMInstCombine.a 
    /usr/lib64/llvm/libLLVMDebugInfo.a 
    /usr/lib64/llvm/liblldbPluginSymbolFileDWARF.a 
    /usr/lib64/llvm/liblldbPluginABISysV_hexagon.a 
    /usr/lib64/llvm/libLLVMTableGen.a 
    /usr/lib64/llvm/liblldbPluginEmulateInstructionARM64.a 
    /usr/lib64/llvm/libllvm_PowerPC.a 
    /usr/lib64/llvm/libllvm_SystemZ.a 
    /usr/lib64/llvm/liblldbPluginSymbolVendorELF.a 
    /usr/lib64/llvm/libLLVMARMDesc.a 
    /usr/lib64/llvm/liblldbPluginPlatformMacOSX.a 
    /usr/lib64/llvm/libLLVMCodeGen.a

我想找到一个合适的解决方案。