[llvm-dev] Lots of linker errors when trying to link with the LLVM C++ API (original) (raw)

Nabeel Omer via llvm-dev llvm-dev at lists.llvm.org
Tue Apr 11 07:43:04 PDT 2017

Hello LLVM Developers, I am trying to compile the program in llvm/examples/ModuleMaker/ModuleMaker.cpp. I am executing the following command:

clang++ --std=c++14 llvm-config --cxxflags --ldflags --libs --libfiles --system-libs ~/src/llvm/examples/ModuleMaker/ModuleMaker.cpp

The linker produces the following errors:

/tmp/ModuleMaker-f710af.o: In function main': /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x17): undefined reference to llvm::LLVMContext::LLVMContext()' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x3b): undefined reference to llvm::Module::Module(llvm::StringRef, llvm::LLVMContext&)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x43): undefined reference to llvm::Type::getInt32Ty(llvm::LLVMContext&)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x4d): undefined reference to llvm::FunctionType::get(llvm::Type*, bool)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x70): undefined reference to llvm::User::operator new(unsigned long)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x88): undefined reference to llvm::Function::Function(llvm::FunctionType*, llvm::GlobalValue::LinkageTypes, llvm::Twine const&, llvm::Module*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0xc1): undefined reference to llvm::BasicBlock::BasicBlock(llvm::LLVMContext&, llvm::Twine const&, llvm::Function*, llvm::BasicBlock*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0xc9): undefined reference to llvm::Type::getInt32Ty(llvm::LLVMContext&)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0xd8): undefined reference to llvm::ConstantInt::get(llvm::IntegerType*, unsigned long, bool)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0xe3): undefined reference to llvm::Type::getInt32Ty(llvm::LLVMContext&)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0xf2): undefined reference to llvm::ConstantInt::get(llvm::IntegerType*, unsigned long, bool)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x120): undefined reference to llvm::BinaryOperator::Create(llvm::Instruction::BinaryOps, llvm::Value*, llvm::Value*, llvm::Twine const&, llvm::Instruction*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x133): undefined reference to llvm::SymbolTableListTraitsllvm::Instruction::addNodeToList(llvm::Instruction*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x160): undefined reference to llvm::User::operator new(unsigned long, unsigned int)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x173): undefined reference to llvm::ReturnInst::ReturnInst(llvm::LLVMContext&, llvm::Value*, llvm::Instruction*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x17e): undefined reference to llvm::SymbolTableListTraits<llvm::Instruction>::addNodeToList(llvm::Instruction*)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x19d): undefined reference to llvm::outs()' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x1af): undefined reference to llvm::WriteBitcodeToFile(llvm::Module const*, llvm::raw_ostream&, bool, llvm::ModuleSummaryIndex const*, bool)' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x1b7): undefined reference to llvm::Module::Module()' /home/nabeel/src/llvm/examples/ModuleMaker/ModuleMaker.cpp:(.text.main+0x1c7): undefined reference to `llvm::LLVMContext::LLVMContext()' /tmp/ModuleMaker-f710af.o:(.data._ZN4llvm30VerifyDisableABIBreakingChecksE+0x0): undefined reference to `llvm::DisableABIBreakingChecks' clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation) Makefile:2: recipe for target 'all' failed make: *** [all] Error 1

The output of clang -v:

clang version 4.0.0 (tags/RELEASE_400/final) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /home/nabeel/bin/clang/bin Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/6.2.0 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6 Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.2.0 Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.2.0 Candidate multilib: .;@m64 Selected multilib: .;@m64

From what I understand, there should be no linker errors because llvm-config produces the names of all the libraries that are distributed with LLVM.

Any help will be enormously appreciated.

Nabeel Omer Systems Programmer, Undergraduate Student, Aspiring Computer Scientist https://nabeelomer.github.io <http://nabeelomer.xyz> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170411/574f7747/attachment.html>

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