[LLVMdev] undefined reference when using llvm-config

[Tom Hawkins]

On Sat, Jun 5, 2010 at 3:18 AM, Duncan Sands <baldrick at free.fr> wrote:
> Hi Tom,
>
> I'm pretty sure that the LLVMContext constructor is defined in libLLVMCore.a
> What is the output of `llvm-config --libs bitwriter`?  Does it include
> -lLLVMCore?

Hi Duncan,

e0082888 at e0082888-laptop:~$ local/bin/llvm-config --libs bitwriter
-lLLVMBitWriter -lLLVMCore -lLLVMSupport -lLLVMSystem

I verified it's pulling from the right library directory, because if I
hide libLLVMCore.a from view and I get:

 e0082888 at e0082888-laptop:~/projects/llvm-hs/tools/ModuleMaker$ g++
`$HOME/local/bin/llvm-config --cppflags --cxxflags --ldflags --libs
bitwriter` ModuleMaker.cpp
/usr/bin/ld: cannot find -lLLVMCore
collect2: ld returned 1 exit status

And libLLVMCore.a contains at least something related to LLVMContext:

e0082888 at e0082888-laptop:~/local/lib$ objdump -h libLLVMCore.a | grep
LLVMContext
LLVMContext.o:     file format elf32-i386
313 .text._ZN4llvm15LLVMContextImplC1ERNS_11LLVMContextE 00001199
00000000  00000000  00007420  2**4
314 .text._ZN4llvm14object_creatorINS_11LLVMContextEEEPvv 0000003a
00000000  00000000  000085c0  2**4
319 .text._ZN4llvm15LLVMContextImplD1Ev 0000159d  00000000  00000000
00008900  2**4
320 .text._ZN4llvm14object_deleterINS_11LLVMContextEE4callEPv 0000003a
 00000000  00000000  00009ea0  2**4

Here is the contents of my local library directory:

e0082888 at e0082888-laptop:~$ ls -1 local/lib
libCompilerDriver.a
libEnhancedDisassembly.a
libEnhancedDisassembly.so
libllvm.a
libLLVMAlphaAsmPrinter.a
libLLVMAlphaCodeGen.a
libLLVMAlphaInfo.a
libllvm_analysis.a
libLLVMAnalysis.a
libLLVMArchive.a
libLLVMARMAsmParser.a
libLLVMARMAsmPrinter.a
libLLVMARMCodeGen.a
libLLVMARMInfo.a
libLLVMAsmParser.a
libLLVMAsmPrinter.a
libllvm_bitreader.a
libLLVMBitReader.a
libllvm_bitwriter.a
libLLVMBitWriter.a
libLLVMBlackfinAsmPrinter.a
libLLVMBlackfinCodeGen.a
libLLVMBlackfinInfo.a
libLLVMCBackend.a
libLLVMCBackendInfo.a
libLLVMCellSPUAsmPrinter.a
libLLVMCellSPUCodeGen.a
libLLVMCellSPUInfo.a
libLLVMCodeGen.a
libLLVMCore.a
libLLVMCppBackend.a
libLLVMCppBackendInfo.a
libllvm_executionengine.a
libLLVMExecutionEngine.a
libLLVMHello.so
libLLVMInstCombine.a
libLLVMInstrumentation.a
libLLVMInterpreter.a
libLLVMipa.a
libLLVMipo.a
libLLVMJIT.a
libLLVMLinker.a
libLLVMMBlazeAsmPrinter.a
libLLVMMBlazeCodeGen.a
libLLVMMBlazeInfo.a
libLLVMMC.a
libLLVMMCParser.a
libLLVMMipsAsmPrinter.a
libLLVMMipsCodeGen.a
libLLVMMipsInfo.a
libLLVMMSIL.a
libLLVMMSILInfo.a
libLLVMMSP430AsmPrinter.a
libLLVMMSP430CodeGen.a
libLLVMMSP430Info.a
libLLVMPIC16AsmPrinter.a
libLLVMPIC16CodeGen.a
libLLVMPIC16Info.a
libLLVMpic16passes.a
libLLVMPowerPCAsmPrinter.a
libLLVMPowerPCCodeGen.a
libLLVMPowerPCInfo.a
libllvm_scalar_opts.a
libLLVMScalarOpts.a
libLLVMSelectionDAG.a
libLLVMSparcAsmPrinter.a
libLLVMSparcCodeGen.a
libLLVMSparcInfo.a
libLLVMSupport.a
libLLVMSystem.a
libLLVMSystemZAsmPrinter.a
libLLVMSystemZCodeGen.a
libLLVMSystemZInfo.a
libllvm_target.a
libLLVMTarget.a
libLLVMTransformUtils.a
libLLVMX86AsmParser.a
libLLVMX86AsmPrinter.a
libLLVMX86CodeGen.a
libLLVMX86Disassembler.a
libLLVMX86Info.a
libLLVMXCoreAsmPrinter.a
libLLVMXCoreCodeGen.a
libLLVMXCoreInfo.a
libLTO.a
libLTO.so
libplugin_llvmc_Base.a
libplugin_llvmc_Clang.a
libprofile_rt.so
libUnitTestMain.a
ocaml