[llvm-dev] undefined symbols during linking LLDB 4.0 RC1

Pavel Labath via llvm-dev llvm-dev at lists.llvm.org
Fri Jan 20 06:10:00 PST 2017 

Hi Hana,

these are all symbols that should be exposed by liblldb (which is
present on your link line), so I am not sure what could be the problem
here.

Could you inspect the symbols exposed by liblldb (objdump -T
lib64/liblldb.so) to see if the symbols are present there?

Also, to help us narrow down the problem could you prune the list of
cmake flags you are configuring the build with (i.e. remove everything
libc++ and lld related) and try to rebuild that way?

thanks,
pavel




On 19 January 2017 at 20:39, Hana Dusíková via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Hello, I update my building scripts to build LLVM 4.0 RC1 (with clang, lldb,
> libc++, libc++abi, lld) on CentOS 6 and I got a lot of undefined symbols
> during linking LLDB.
>
> I'm using clang-3.9 and this configuration:
>
> -DLLVM_TARGETS_TO_BUILD="X86"
> -DCMAKE_BUILD_TYPE=Release
> -DCMAKE_C_COMPILER=/usr/bin/clang
> -DCMAKE_CXX_COMPILER=/usr/bin/clang++
> -DCMAKE_EXE_LINKER_FLAGS="-lc++abi -lc++"
> -DCMAKE_EXE_LINKER_FLAGS="-lc++abi -lc++"
> -DCMAKE_SHARED_LINKER_FLAGS="-lc++abi -lc++"
> -DCMAKE_MODULE_LINKER_FLAGS="-lc++abi -lc++"
> -DLLVM_ENABLE_LIBCXX=ON
> -DLLVM_LIBDIR_SUFFIX=64
> -DCMAKE_INSTALL_PREFIX=/usr
> -DLLDB_DISABLE_PYTHON=1
> -DTARGET_TRIPLE="x86_64-pc-linux-gnu"
> -DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=ON
> -DLLVM_ENABLE_LLD=ON
>
> List of undefined symbols and invocation is next:
>
> [ 89%] Linking CXX executable ../../../../bin/lldb
> cd
> /opt/bamboo-agent-01/xml-data/build-dir/CLANG-BFRH-JOB1/build/RELEASE_40_RC1/Linux/x86_64/llvm_build_phase1/tools/lldb/tools/driver
> && /usr/local/bin/cmake -E cmake_link_script CMakeFiles/lldb.dir/link.txt
> --verbose=1
> /usr/bin/clang++    -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Wall
> -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual
> -Wmissing-field-initializers -pedantic -Wno-long-long
> -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor
> -Wstring-conversion -Werror=date-time -std=c++11 -ffunction-sections
> -fdata-sections -Wno-deprecated-declarations -Wno-unknown-pragmas
> -Wno-strict-aliasing -Wno-deprecated-register -Wno-vla-extension -O3
> -DNDEBUG  -lc++abi -lc++ -stdlib=libc++ -fuse-ld=lld
> -Wl,-allow-shlib-undefined  -Wl,-O3 -Wl,--gc-sections
> CMakeFiles/lldb.dir/Driver.cpp.o CMakeFiles/lldb.dir/Platform.cpp.o  -o
> ../../../../bin/lldb-4.0.0 ../../../../lib64/libLLVMX86CodeGen.a
> ../../../../lib64/libLLVMX86AsmPrinter.a
> ../../../../lib64/libLLVMX86AsmParser.a ../../../../lib64/libLLVMX86Desc.a
> ../../../../lib64/libLLVMX86Info.a
> ../../../../lib64/libLLVMX86Disassembler.a
> ../../../../lib64/libLLVMInterpreter.a ../../../../lib64/libLLVMAsmParser.a
> ../../../../lib64/libLLVMBitReader.a ../../../../lib64/libLLVMBitWriter.a
> ../../../../lib64/libLLVMCodeGen.a ../../../../lib64/libLLVMDemangle.a
> ../../../../lib64/libLLVMipo.a ../../../../lib64/libLLVMSelectionDAG.a
> ../../../../lib64/libLLVMBitReader.a ../../../../lib64/libLLVMMC.a
> ../../../../lib64/libLLVMMCJIT.a ../../../../lib64/libLLVMCore.a
> ../../../../lib64/libLLVMMCDisassembler.a
> ../../../../lib64/libLLVMExecutionEngine.a
> ../../../../lib64/libLLVMRuntimeDyld.a ../../../../lib64/libLLVMOption.a
> ../../../../lib64/libLLVMSupport.a ../../../../lib64/libLLVMCoverage.a
> ../../../../lib64/libLLVMTarget.a -lpthread
> ../../../../lib64/liblldb.so.4.0.0 ../../../../lib64/libLLVMAsmPrinter.a
> ../../../../lib64/libLLVMDebugInfoCodeView.a
> ../../../../lib64/libLLVMDebugInfoMSF.a
> ../../../../lib64/libLLVMGlobalISel.a
> ../../../../lib64/libLLVMX86AsmPrinter.a ../../../../lib64/libLLVMX86Utils.a
> ../../../../lib64/libLLVMX86Info.a ../../../../lib64/libLLVMCodeGen.a
> ../../../../lib64/libLLVMBitWriter.a ../../../../lib64/libLLVMScalarOpts.a
> ../../../../lib64/libLLVMIRReader.a ../../../../lib64/libLLVMAsmParser.a
> ../../../../lib64/libLLVMInstCombine.a
> ../../../../lib64/libLLVMInstrumentation.a ../../../../lib64/libLLVMLinker.a
> ../../../../lib64/libLLVMVectorize.a
> ../../../../lib64/libLLVMTransformUtils.a ../../../../lib64/libLLVMTarget.a
> ../../../../lib64/libLLVMAnalysis.a ../../../../lib64/libLLVMObject.a
> ../../../../lib64/libLLVMBitReader.a ../../../../lib64/libLLVMMCParser.a
> ../../../../lib64/libLLVMMC.a ../../../../lib64/libLLVMProfileData.a
> ../../../../lib64/libLLVMCore.a ../../../../lib64/libLLVMSupport.a
> ../../../../lib64/libLLVMDemangle.a -lrt -ldl -ltinfo -lpthread -lz -lm
> -Wl,-rpath,"\$ORIGIN/../lib64"
> undefined symbol: _ZN4lldb10SBDebugger10InitializeEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger11SetUseColorEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger15GetInstanceNameEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger16GetVersionStringEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger16SetTerminalWidthEj in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger16SkipAppInitFilesEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger17SkipLLDBInitFilesEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger18GetErrorFileHandleEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger18SetCloseInputOnEOFEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger18SetErrorFileHandleEP8_IO_FILEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger18SetInputFileHandleEP8_IO_FILEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger19GetOutputFileHandleEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger19SetOutputFileHandleEP8_IO_FILEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger20GetScriptingLanguageEPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger20SetUseExternalEditorEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger21GetCommandInterpreterEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger21RunCommandInterpreterEbb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol:
> _ZN4lldb10SBDebugger21RunCommandInterpreterEbbRNS_30SBCommandInterpreterRunOptionsERiRbS4_
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger22DispatchInputInterruptEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger22GetDefaultArchitectureEPcm in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger22SaveInputTerminalStateEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger22SetDefaultArchitectureEPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger24GetInternalVariableValueEPKcS2_ in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger25RestoreInputTerminalStateEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger6CreateEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger7DestroyERS0_ in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger7RunREPLENS_12LanguageTypeEPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger8GetAsyncEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger8SetAsyncEb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebugger9TerminateEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBDebuggerD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBFileSpec19AppendPathComponentEPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBFileSpec25ResolveExecutableLocationEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBFileSpecC1EPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBFileSpecC1EPKcb in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb10SBFileSpecD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb12SBStringList16GetStringAtIndexEm in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb12SBStringListD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb13SBBroadcasterC2EPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb13SBBroadcasterD2Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb17SBLanguageRuntime25GetLanguageTypeFromStringEPKc
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol:
> _ZN4lldb20SBCommandInterpreter24GetArgumentTypeAsCStringENS_19CommandArgumentTypeE
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol:
> _ZN4lldb20SBCommandInterpreter29SourceInitFileInHomeDirectoryERNS_21SBCommandReturnObjectE
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb20SBCommandInterpreterD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb21SBCommandReturnObject8PutErrorEP8_IO_FILE in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb21SBCommandReturnObject9PutOutputEP8_IO_FILE in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb21SBCommandReturnObjectC1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb21SBCommandReturnObjectD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb30SBCommandInterpreterRunOptions14SetStopOnCrashEb
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb30SBCommandInterpreterRunOptions14SetStopOnErrorEb
> in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb30SBCommandInterpreterRunOptionsC1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb30SBCommandInterpreterRunOptionsD1Ev in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb7SBError24SetErrorStringWithFormatEPKcz in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb7SBErrorC1Ev in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb7SBErrorD1Ev in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBHostOS13ThreadCreatedEPKc in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBHostOS17GetLLDBPythonPathEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBHostOS20GetUserHomeDirectoryEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBStream6PrintfEPKcz in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBStream7GetDataEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBStream7GetSizeEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBStreamC1Ev in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZN4lldb8SBStreamD1Ev in CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb10SBFileSpec12GetDirectoryEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb10SBFileSpec6ExistsEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb10SBFileSpec7GetPathEPcm in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb10SBFileSpec7IsValidEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb12SBStringList7GetSizeEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb7SBError10GetCStringEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb7SBError4FailEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> undefined symbol: _ZNK4lldb7SBError8GetErrorEv in
> CMakeFiles/lldb.dir/Driver.cpp.o
> clang-3.9: error: linker command failed with exit code 1 (use -v to see
> invocation)
> make[2]: *** [bin/lldb-4.0.0] Error 1
> make[2]: Leaving directory
> `/opt/bamboo-agent-01/xml-data/build-dir/CLANG-BFRH-JOB1/build/RELEASE_40_RC1/Linux/x86_64/llvm_build_phase1'
> make[1]: *** [tools/lldb/tools/driver/CMakeFiles/lldb.dir/all] Error 2
> make[1]: Leaving directory
> `/opt/bamboo-agent-01/xml-data/build-dir/CLANG-BFRH-JOB1/build/RELEASE_40_RC1/Linux/x86_64/llvm_build_phase1'
> make: *** [all] Error 2
>
>
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