[LLVMdev] Extracting an AST to Graphviz using Clang

Sat Jun 9 14:56:41 PDT 2012

You need to run the clang from the build directory. Something like
./Debug+Asserts/bin/clang

Joey

On 9 June 2012 22:52, Carlos Andrade <carlosviansi at gmail.com> wrote:

> Just in case another person comes to get stuck on this on Mac OS:
>
> http://web.mit.edu/mfloyd/www/computing/mac/gv/
>
> This link explains the process on getting gv installed since Xaw3d
> dependency even has a 'error' (actually missing few parameters) on a line
> that prevents code compilation that needs to be fixed before configuring
> and make it works.
>
> -- I have gv installed now and my bash console can recognize the 'gv' and
> 'dot' as specified on llvm manual, from my previous email I believe I
> compiled on debug mode and my bash does recognize 'clang' bash now but
> still I get:
>
> clang -cc1 -ast-view smd.c
>
> *Stmt::viewAST is only available in debug builds on systems with Graphviz
> or gv!*
>
> What am I missing? :(
>
> Thanks,
>
> Carlos Andrade
> http://carlosandrade.co
>
>
>
> 2012/6/9 Carlos Andrade <carlosviansi at gmail.com>
>
>> Just to add one more thing. I have been trying to install the gv on my
>> mac os but I have not been successful either. The gv build requires xaw3d (
>> http://directory.fsf.org/wiki/Xaw3d ) which apparently has not been
>> updated for quite few years and the download is not even available anymore.
>>
>> Carlos Andrade
>> http://carlosandrade.co
>>
>>
>>
>> 2012/6/9 Carlos Andrade <carlosviansi at gmail.com>
>>
>>> Hi Joey,
>>>
>>> I think there is still something missing.
>>>
>>> I ignored the -j as you mentioned and saw on the documentation that to
>>> compile on debug mode I could do so using:
>>>
>>> $./configure --disable-optimized
>>>
>>> As a result by the end I compiled llvm2.9 I got:
>>>
>>> llvm[0]: ***** Completed Debug Build
>>> llvm[0]: ***** Note: Debug build can be 10 times slower than an
>>> llvm[0]: ***** optimized build. Use make ENABLE_OPTIMIZED=1 to
>>> llvm[0]: ***** make an optimized build. Alternatively you can
>>> llvm[0]: ***** configure with --enable-optimized.
>>>
>>>
>>> Which lead me to believe I end up getting what you suggested on debug
>>> mode. I also put clang 2.9 inside /tools/clang (renamed the clang-2-9) so
>>> that the configure could notice it and ran $make test inside the clang
>>> folder after it.
>>>
>>> Still I executed $ ./clang -cc1 -ast-view smd.c only to get
>>>
>>> Stmt::viewAST is only available in debug builds on systems with Graphviz
>>> or gv!
>>>
>>> Mixed up with the output and nothing being show on graphviz. What am I
>>> missing? Again, I have graphviz but I don't think I have gv and I am
>>> running an OS X Lion 10.7.4 (latest version).
>>>
>>> Thanks,
>>>
>>> Carlos Andrade
>>> http://carlosandrade.co
>>>
>>>
>>>
>>> 2012/6/9 Joey Gouly <joel.gouly at gmail.com>
>>>
>>>> Hi,
>>>>
>>>> The -j option just says how many processes are started to parallelise
>>>> the build.
>>>>
>>>> The default option is to build Debug+Asserts, so unless you add any
>>>> extra arguments when you run './configure', you should be fine!
>>>>
>>>> Joey
>>>>
>>>>
>>>> On 9 June 2012 21:29, Carlos Andrade <carlosviansi at gmail.com> wrote:
>>>>
>>>>> Hi Joey!
>>>>>
>>>>> Thanks I just replied your message on stack and I was actually looking
>>>>> into this right now. Is this the option? I just wanted to confirm:
>>>>>
>>>>>
>>>>>    - make [-j] - The -j specifies the number of jobs (commands) to
>>>>>    run simultaneously. This builds both LLVM and Clang for Debug+Asserts mode.
>>>>>    The --enabled-optimized configure option is used to specify a Release build.
>>>>>
>>>>>
>>>>> The -j parameter is the right one?
>>>>>
>>>>> Thank you,
>>>>>
>>>>> Carlos Andrade
>>>>> http://carlosandrade.co
>>>>>
>>>>>
>>>>>
>>>>> 2012/6/9 Joey Gouly <joel.gouly at gmail.com>
>>>>>
>>>>>> Hi Carlos,
>>>>>>
>>>>>> You can just download the source code from
>>>>>> http://llvm.org/releases/download.html#2.9 and then read
>>>>>> http://llvm.org/docs/GettingStarted.html which should tell you how
>>>>>> to compile it.
>>>>>>
>>>>>> Joey
>>>>>>
>>>>>> On 9 June 2012 21:10, Carlos Andrade <carlosviansi at gmail.com> wrote:
>>>>>>
>>>>>>> Hi Alex,
>>>>>>>
>>>>>>> Would you recommend any specific link in respect on how to compile
>>>>>>> in debug mode? I downloaded the Mac OS version on the website so I did not
>>>>>>> compile anything. I am sort of a rookie on bash but I should be able to
>>>>>>> figure my way around this.
>>>>>>>
>>>>>>> Also, is there any particular reason why this functionality is only
>>>>>>> available on debug mode?
>>>>>>>
>>>>>>> Thank you so much for the fast reply, was driving me nuts!
>>>>>>>
>>>>>>> Best,
>>>>>>>
>>>>>>> Carlos Andrade
>>>>>>> http://carlosandrade.co
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 2012/6/9 Alex Rønne Petersen <xtzgzorex at gmail.com>
>>>>>>>
>>>>>>>> Hi Carlos,
>>>>>>>>
>>>>>>>> > I am new to this list, and hope this question is pertinent to
>>>>>>>> this mailing
>>>>>>>> > list.
>>>>>>>>
>>>>>>>> Welcome!
>>>>>>>>
>>>>>>>> > Stmt::viewAST is only available in debug builds on systems with
>>>>>>>> Graphviz or
>>>>>>>> > gv!
>>>>>>>>
>>>>>>>> You need to actually build Clang in debug mode for this particular
>>>>>>>> method to be available, which is very likely why you're seeing this
>>>>>>>> error. I don't think that Clang builds shipped with Xcode (for
>>>>>>>> example) are built in debug mode.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Alex
>>>>>>>>
>>>>>>>> On Sat, Jun 9, 2012 at 8:54 PM, Carlos Andrade <
>>>>>>>> carlosviansi at gmail.com> wrote:
>>>>>>>> > Dears,
>>>>>>>> >
>>>>>>>> > I am new to this list, and hope this question is pertinent to
>>>>>>>> this mailing
>>>>>>>> > list.
>>>>>>>> >
>>>>>>>> > I have been trying to use Clang to extract an AST from my source
>>>>>>>> code, but
>>>>>>>> > without success when attempting to do so with Graphviz.
>>>>>>>> >
>>>>>>>> > I created a thread on Stackoverflow recently in hope any could
>>>>>>>> help me [1],
>>>>>>>> > but the question is actually pretty simple. I keep getting
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > Stmt::viewAST is only available in debug builds on systems with
>>>>>>>> Graphviz or
>>>>>>>> > gv!
>>>>>>>> >
>>>>>>>> > alongside the code that is output despite having graphviz added
>>>>>>>> to the path
>>>>>>>> > and having it installed on my machine. dot works fine from my
>>>>>>>> console, but I
>>>>>>>> > have no 'gv' like it is suggested on the documentation (you can
>>>>>>>> find how I
>>>>>>>> > attempted that and the versions on the stack link better
>>>>>>>> formatted than on
>>>>>>>> > this email).
>>>>>>>> >
>>>>>>>> > The command I am running on my console is:
>>>>>>>> >
>>>>>>>> > ./clang -cc1 -ast-view smd.c
>>>>>>>> >
>>>>>>>> > My graphviz version is 2.28 and my clang version is 2.9 (for a
>>>>>>>> couple of
>>>>>>>> > reasons I need to make it work for this version).
>>>>>>>> >
>>>>>>>> >
>>>>>>>> http://stackoverflow.com/questions/10962845/stmtviewast-is-only-available-in-debug-builds-on-systems-with-graphviz-or-gv
>>>>>>>> >
>>>>>>>> > I also heard xml output was discontinued, but I still see the
>>>>>>>> option from
>>>>>>>> > cc1 to output in such format without any warning message on 2.9
>>>>>>>> (although no
>>>>>>>> > apparent output is given in that case), why is that?
>>>>>>>> >
>>>>>>>> > Thank you,
>>>>>>>> >
>>>>>>>> > Carlos Andrade
>>>>>>>> > http://carlosandrade.co
>>>>>>>> >
>>>>>>>> >
>>>>>>>> > _______________________________________________
>>>>>>>> > LLVM Developers mailing list
>>>>>>>> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>>>>>> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>>>>> >
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> LLVM Developers mailing list
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>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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