[LLVMdev] building Polly on Ubuntu

[Tobias Grosser]

On 05/13/2011 01:29 AM, MORIYAMA Tomohiro wrote:
> Hello,
> 
> I am trying to build Polly on Ubuntu11.04 on Windows XP via VMWare,
> according to the Polly wiki(now moved).
> 
> I succeeded last month, but now it fails at "make".
> Please tell me what is wrong.

Hi Tomohiro,

cool that you are looking into Polly. Lets see if we can get it working. ;)

> Here is the corresponding log.
> 
> [ 67%] Built target count
> Scanning dependencies of target not
> [ 67%] Building CXX object utils/not/CMakeFiles/not.dir/not.cpp.o
> Linking CXX executable ../../bin/not
> [ 67%] Built target not
> Scanning dependencies of target PollyJSON
> [ 67%] Building CXX object
> tools/polly/lib/JSON/CMakeFiles/PollyJSON.dir/json_reader.cpp.o
> /home/tomohiro/llvm/tools/polly/lib/JSON/json_reader.cpp: In function
> ‘std::istream&  Json::operator>>(std::istream&, Json::Value&)’:
> /home/tomohiro/llvm/tools/polly/lib/JSON/json_reader.cpp:880:72: error:
> exception handling disabled, use -fexceptions to enable
> make[2]: ***
> [tools/polly/lib/JSON/CMakeFiles/PollyJSON.dir/json_reader.cpp.o] Error 1
> make[1]: *** [tools/polly/lib/JSON/CMakeFiles/PollyJSON.dir/all] Error 2
> make: *** [all] Error 2

The problem here is that LLVM is compiled by default without exceptions,
however the version of Polly that you have includes a JSON library were
that uses exceptions.

This conflict was introduced by a recent update of our JSON library and
should have been solved by the following two commits:

-------------------------------------------------------------------------
Author: Hongbin Zheng <etherzhhb at gmail.com>
Date:   Sat Apr 30 02:47:34 2011 +0000

    JSON: Do not use throw when exception is disabled.

    svn-id: https://llvm.org/svn/llvm-project/polly/trunk@130575

Author: Hongbin Zheng <etherzhhb at gmail.com>
Date:   Sat Apr 30 02:30:58 2011 +0000

    JSON: Disable exception in JSON library, because exception is
          disable by by default.

    svn-id: https://llvm.org/svn/llvm-project/polly/trunk@130574
-------------------------------------------------------------------------

When did you check out Polly? What does 'git log' or 'svn status' show?
I suspect you are still using the old Polly git repository. We recently
moved Polly into the LLVM svn repository and only there the recent
changes are available. To check out Polly from LLVM svn have a look at
this page:

http://polly.grosser.es/get_started.html#source

If you need further help, let me know.

Cheers

Tobi