[LLVMdev] CreateGlobalStringPtr giving linker errors

[Dmitry N. Mikushin]

Probably your g++ compiles x86_64 binary by default, but i686 dylib is supplied?

Try:

g++ -m32 e.cpp /Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/libexec/gcc/i686-apple-darwin10/4.2.1/libllvmgcc.dylib

- D.

2012/1/22 Arpan Sen <arpansen at gmail.com>:
> Hi,
>
> I am trying to use some LLVM API in my C++ code, and I end up getting linker
> errors. I am working on Apple MacOSX Lion. Using g++ for the compile. It is
> the CreateGlobalStringPtr which is throwing the error. This is LLVM 3.0.
>
> Here's the codeI am trying to use some LLVM API in my C++ code, and I end up
> getting linker errors. I am working on Apple MacOSX Lion. Using g++ for the
> compile. It is the CreateGlobalStringPtr which is throwing the error. This
> is LLVM 3.0.
>
> Here's the code:
>
> #define __STDC_LIMIT_MACROS
> #define __STDC_CONSTANT_MACROS
>
> #include "llvm/Support/DataTypes.h"
> #include "llvm/Support/IRBuilder.h"
> #include "llvm/LLVMContext.h"
> #include "llvm/Module.h"
> #include "llvm/Constants.h"
> #include "llvm/Function.h"
> #include "llvm/BasicBlock.h"
> int main()
> {
>   llvm::LLVMContext & context = llvm::getGlobalContext();
>   llvm::Module *module = new llvm::Module("top", context);
>   llvm::IRBuilder<> builder(context);
>   llvm::Value *helloWorld = builder.CreateGlobalStringPtr("hello world!\n");
> }
>
> And here's the error:
>
> g++ e.cpp
> /Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/libexec/gcc/i686-apple-darwin10/4.2.1/libllvmgcc.dylib
> Undefined symbols for architecture x86_64:
>   "llvm::ConstantExpr::getGetElementPtr(llvm::Constant*,
> llvm::ArrayRef<llvm::Value*>, bool)", referenced from:
>       llvm::ConstantExpr::getInBoundsGetElementPtr(llvm::Constant*,
> llvm::ArrayRef<llvm::Value*>)in ccFB7xjg.o
>   "llvm::GetElementPtrInst::getIndexedType(llvm::Type*,
> llvm::ArrayRef<llvm::Value*>)", referenced from:
>       llvm::GetElementPtrInst::GetElementPtrInst(llvm::Value*,
> llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::Twine const&,
> llvm::Instruction*)in ccFB7xjg.o
>   "llvm::PointerType::get(llvm::Type*, unsigned int)", referenced from:
>       llvm::GetElementPtrInst::GetElementPtrInst(llvm::Value*,
> llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::Twine const&,
> llvm::Instruction*)in ccFB7xjg.o
>   "llvm::Instruction::Instruction(llvm::Type*, unsigned int, llvm::Use*,
> unsigned int, llvm::Instruction*)", referenced from:
>       llvm::GetElementPtrInst::GetElementPtrInst(llvm::Value*,
> llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::Twine const&,
> llvm::Instruction*)in ccFB7xjg.o
>   "llvm::GetElementPtrInst::init(llvm::Value*, llvm::ArrayRef<llvm::Value*>,
> llvm::Twine const&)", referenced from:
>       llvm::GetElementPtrInst::GetElementPtrInst(llvm::Value*,
> llvm::ArrayRef<llvm::Value*>, unsigned int, llvm::Twine const&,
> llvm::Instruction*)in ccFB7xjg.o
>   "llvm::IRBuilderBase::CreateGlobalString(llvm::StringRef, llvm::Twine
> const&)", referenced from:
>       llvm::IRBuilder<true, llvm::ConstantFolder,
> llvm::IRBuilderDefaultInserter<true>
>>::CreateGlobalStringPtr(llvm::StringRef, llvm::Twine const&)in ccFB7xjg.o
>   "llvm::ConstantInt::get(llvm::IntegerType*, unsigned long long, bool)",
> referenced from:
>       llvm::IRBuilder<true, llvm::ConstantFolder,
> llvm::IRBuilderDefaultInserter<true>
>>::CreateGlobalStringPtr(llvm::StringRef, llvm::Twine const&)in ccFB7xjg.o
> ld: symbol(s) not found for architecture x86_64
>
>
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