[LLVMdev] Extracting an AST to Graphviz using Clang

[Carlos Andrade]

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
>>>>> >
>>>>>
>>>>
>>>>
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>>
>
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