[LLVMdev] Some Questions about LLVM

[Chris Lattner]

On Mon, 25 Oct 2004, zhou feng wrote:
> I have some questions about LLVM
> 1. I recently compiled LLVM on my X86 machine correctly. But when I use
> the built LLVm compiling programs(in the getting started guide), I got
> an warning saying can not find library "lc" (something like that). Yet
> LLVM did yeild a execution native code and it runs correctly except with
> a waring saying something like "__main**"(I cann't remember very clearly).
> I followed all the install instructions except the installation dir for
> llvm is /home/my/llvm/llvm-bin/ and llvmgcc dir is
> /home/my/llvm/llvm/llvm-gcc and the configure option is
> --prefix=/home/my/llvm/llvm-bin/ --enable-jit
> --llvmgccdir=/home/my/llvm/llvm/llvm-gcc

Make sure you set your LLVM_LIB_SEARCH_PATH envvar, as specified in the
getting started guide:
http://llvm.cs.uiuc.edu/docs/GettingStarted.html#environment

> btw: there was an error when installing LLVM, the system complained "no
> pax command...". What pax is?

I have no idea.

> 2. I want to do some work on register allocation using LLVM, which parts
> of code should I read? ( The whole source is too big for me)

As Alkis mentioned, the code in lib/CodeGen/* is the most relevant.

-Chris

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