[llvm-dev] ../../../Makefile.common:60:../../../Makefile.config:don't have that file or directory

[Q Z via llvm-dev]

I installed LLVM3.7.0  according to the LLVM document. I can use
"clang","LLVM-dis"commands ,and so on.
but when I execute commad "make" at llvm/lib/Transform/Hello directory, the
error is :
../../../Makefile.common:60:../../../Makefile.config:don't have that file
or directory
../../../Makefile.common:68:../../../Makefile.rules:don't have that file or
directory

why?
can anyone help me?
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