[LLVMdev] [Cygwin] onsistant error building LLVM

[Jeff Cohen]

Also, this error:

/usr/src/llvm/lib/Target/X86/X86ISelPattern.cpp:73: undefined reference 
to `X86CompilationCallback2'

doesn't make sense.  X86CompilationCallback2 is not visible outside of 
X86JITInfo.cpp, and line 73 of X86ISelPattern.cpp is in the middle of a 
comment block.