[PATCH] Rework lli-child-target for portability and correctness

[Alp Toker]

Thanks Renato,

Based on this and also gentle / caring nudging from rnk, I decided to go 
back and do this part of the patch in a slightly more conventional manner.

I guess your work on PR18057 will benefit from the unified 
ReadBytes()/WriteBytes() in my patch, are you actively blocked on this 
landing or can I leave finishing it off to the weekend?

Alp.



On 04/12/2013 15:35, Renato Golin wrote:
> Hi Alp,
>
> I'm getting link errors on my ARM box:
>
> llvm[3]: Linking Release+Asserts executable lli-child-target (without symbols)
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> LLIChildTarget::handleTerminate(): error: undefined reference to
> 'llvm::system_category()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::releaseMappedMemory(llvm::sys::MemoryBlock&):
> error: undefined reference to 'llvm::system_category()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::releaseMappedMemory(llvm::sys::MemoryBlock&):
> error: undefined reference to 'llvm::system_category()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::allocateMappedMemory(unsigned int,
> llvm::sys::MemoryBlock const*, unsigned int, llvm::error_code&):
> error: undefined reference to 'llvm::system_category()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::allocateMappedMemory(unsigned int,
> llvm::sys::MemoryBlock const*, unsigned int, llvm::error_code&):
> error: undefined reference to 'llvm::sys::process::get_self()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::allocateMappedMemory(unsigned int,
> llvm::sys::MemoryBlock const*, unsigned int, llvm::error_code&):
> error: undefined reference to 'llvm::llvm_unreachable_internal(char
> const*, char const*, unsigned int)'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::protectMappedMemory(llvm::sys::MemoryBlock const&,
> unsigned int): error: undefined reference to
> 'llvm::generic_category()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::protectMappedMemory(llvm::sys::MemoryBlock const&,
> unsigned int): error: undefined reference to
> 'llvm::llvm_unreachable_internal(char const*, char const*, unsigned
> int)'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> llvm::sys::Memory::AllocateRWX(unsigned int, llvm::sys::MemoryBlock
> const*, std::string*): error: undefined reference to
> 'llvm::sys::process::get_self()'
> tools/lli/ChildTarget/Release+Asserts/ChildTarget.o:tools/lli/ChildTarget/ChildTarget.cpp:function
> MakeErrMsg(std::string*, std::string const&, int): error: undefined
> reference to 'llvm::sys::StrError(int)'
>
> On my laptop it builds fine, though.
>
> cheers,
> --renato

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