[cfe-dev] Error in Tutorial for building tools using LibTooling and LibASTMatchers

[Pedro Delgado Perez]

Hello everyone,

I've been following the Tutorial for building tools using LibTooling and LibASTMatchers:

http://clang.llvm.org/docs/LibASTMatchersTutorial.html [ http://clang.llvm.org/docs/LibASTMatchersTutorial.html ]

I didn't accomplish the Step 0 as I had followed the "getting started guide" before to get llvm and clang. Then, everything was right until I reached to the instruction:

cmake -G Ninja ../llvm -DLLVM_BUILD_TESTS=ON

Then, I got the next errors:

> -- The C compiler identification is GNU 4.6.3
> -- Check for working C compiler using: Ninja
> -- Check for working C compiler using: Ninja -- works
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - done
> -- The CXX compiler identification is GNU 4.6.3
> -- Check for working CXX compiler using: Ninja
> -- Check for working CXX compiler using: Ninja -- works
> -- Detecting CXX compiler ABI info
> -- Detecting CXX compiler ABI info - done
> CMake Error at CMakeLists.txt:23 (include):
>  include could not find load file:
> 
>    VersionFromVCS
> 
> 
> CMake Error at CMakeLists.txt:153 (include):
>  include could not find load file:
> 
>    AddLLVMDefinitions
> 
> 
> CMake Error at CMakeLists.txt:239 (include):
>  include could not find load file:
> 
>    config-ix
> 
> 
> CMake Error at CMakeLists.txt:247 (include):
>  include could not find load file:
> 
>    HandleLLVMOptions
> 
> 
> -- Found PythonInterp: /usr/bin/python (found version "2.7.3") 
> -- Constructing LLVMBuild project information
> CMake Error at CMakeLists.txt:306 (message):
>  Unexpected failure executing llvm-build: Usage: llvm-build [options]
> 
>   
> 
>  llvm-build: error: invalid native target: '' (not in project)
> 
> 
> -- Configuring incomplete, errors occurred!
> 
What's happening?

By the way, the directory would be ../../llvm, wouldn't it? I'm in /usr/llvm/build and when I write ../llvm it says: "The source directory /usr/llvm/llvm does not exist" 

Thanks in advance,

Pedro.
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