[LLVMdev] Extracting an AST to Graphviz using Clang

Sat Jun 9 14:52:31 PDT 2012

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
>>>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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