Writing an LLVM Pass

i'm trying to create an LLVM pass using the guide at http://llvm.org/releases/2.9/docs/WritingAnLLVMPass.html

but i'm having several problems:

• i haven't many of the folder that are indicated into the guide (lib/Transform/Hello) and (Debug+Asserts), i have created them, is it right? what's the right path?
  i create these: /usr/lib/llvm-2.9/lib/Transforms/Hello and /usr/lib/llvm-2.9/Debug+Asserts




• when i try to make the file in the guide i have error:

.

# Makefile for hello pass
 
 
 # Path to top level of LLVM heirarchy
 LEVEL = /usr/lib/llvm-2.9/build        #*********I MODIFY THIS!!!! ***************
 
 # Name of the library to build
 LIBRARYNAME = Hello
 
 # Make the shared library become a loadable module so the tools can 
 # dlopen/dlsym on the resulting library.
 LOADABLE_MODULE = 1
 
 # Tell the build system which LLVM libraries your pass needs. You'll probably
 # need at least LLVMSystem.a, LLVMSupport.a, LLVMCore.a but possibly several
 # others too.
 LLVMLIBS = LLVMCore.a LLVMSupport.a LLVMSystem.a
 
 # Include the makefile implementation stuff
 include $(LEVEL)/Makefile.common
 

and i modify also other lines into Makefile.common:

ifndef LLVM_SRC_ROOT
 include $(LEVEL)/Makefile.rules
 else
 include $(LLVM_SRC_ROOT)/Makefile.rules
 endif
 

because it doesn't find the Makefile.rules (in this way it works)

but now i have this error when i do make into the folder containing my hello.c file (/usr/lib/llvm-2.9/lib/Transforms/Hello):

make: ***  No rule to make target "/configure", needed by "/config.status".  Stop.
 

what's the problem?!?

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