[lldb-dev] Linker errors on MacOSX this morning?

[Greg Clayton]

You might want to nuke your lldb/llvm-build folder and try again. Sometimes when updating the dependencies aren't tracked 100% and can result in bad .a files from the llvm build.

> On Aug 22, 2014, at 10:32 AM, Zachary Turner <zturner at google.com> wrote:
> 
> I just updated all my repos and I'm seeing this when I build lldb-tool using the Xcode solution:
> 
> Undefined symbols for architecture x86_64:
> 
>   "llvm::ConstantExpr::getGetElementPtr(llvm::Constant*, llvm::ArrayRef<llvm::Value*>, bool)", referenced from:
> 
>       llvm::ConstantExpr::getGetElementPtr(llvm::Constant*, llvm::ArrayRef<llvm::Constant*>, bool) in liblldb-core.a(IRForTarget.o)
> 
>      (maybe you meant: __ZN4llvm12ConstantExpr16getGetElementPtrEPNS_8ConstantENS_8ArrayRefIPNS_5ValueEEEbPNS_4TypeE)
> 
>   "llvm::ConstantExpr::getBitCast(llvm::Constant*, llvm::Type*)", referenced from:
> 
>       IRForTarget::RewriteObjCConstString(llvm::GlobalVariable*, llvm::GlobalVariable*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::RewriteObjCSelector(llvm::Instruction*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::BuildRelocation(llvm::Type*, unsigned long long) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::ReplaceStrings() in liblldb-core.a(IRForTarget.o)
> 
>      (maybe you meant: __ZN4llvm12ConstantExpr10getBitCastEPNS_8ConstantEPNS_4TypeEb)
> 
>   "llvm::ConstantExpr::getIntToPtr(llvm::Constant*, llvm::Type*)", referenced from:
> 
>       IRForTarget::BuildFunctionPointer(llvm::Type*, unsigned long long) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::RewriteObjCConstString(llvm::GlobalVariable*, llvm::GlobalVariable*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::RewriteObjCSelector(llvm::Instruction*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::HandleSymbol(llvm::Value*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::HandleObjCClass(llvm::Value*) in liblldb-core.a(IRForTarget.o)
> 
>       IRForTarget::CompleteDataAllocation() in liblldb-core.a(IRForTarget.o)
> 
>      (maybe you meant: __ZN4llvm12ConstantExpr11getIntToPtrEPNS_8ConstantEPNS_4TypeEb)
> 
> ld: symbol(s) not found for architecture x86_64
> 
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
> 
> 
> 
> Is anyone else seeing this?
> 
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