Re: [boost] [GSOC] Mentors for a C++11 TMP-related project

Subject: Re: [boost] [GSOC] Mentors for a C++11 TMP-related project
From: Larry Evans (cppljevans_at_[hidden])
Date: 2014-03-09 17:02:59

On 03/09/14 11:43, Larry Evans wrote:
> On 03/08/14 10:58, Louis Dionne wrote:
>> Hi,
>>
>> I am a student considering to apply for GSOC 2014.
>>
>> Short story
>> ===========
>> I would like to know if someone is interested to mentor a project
>> whose aim is boldly to:
>> - Document the current state of the art in C++11 template
>> metaprogramming.
>> - Propose modifications to the current Boost.MPL or perhaps write a TMP
>> library as a successor to the MPL.
>>
>> Full story
>> ==========
>> I have been working on a C++11 TMP library[1] for a while now, and I will
>> present the state of my work at C++Now 2014. In the process of writing
>> the library, I experiment with several TMP techniques, which I document
>> and benchmark. The goal is to propose a new library that improves over
>> the current MPL in a measurable way (i.e. it's not just my preference).
>> That library could be seen as a C++11 successor to the MPL and new
>> code could use that instead of the MPL.
>>
>> Now, while I expect the library to be fairly advanced by the beginning of
>> the summer, there will certainly be criticism when I present it publicly.
>> I see two possibilities here:
>>
>> (1) Input is negative enough that the idea to propose it is dropped.
>> In that
>> case, I could work on improvements to the current MPL during the summer.
>> The kind of improvements I'm talking about range from documentation to
>> bugfixes to support for C++11 when available.
>>
>> (2) Input is generally positive and the library is proposed circa the
>> beginning of the summer. If the library is refused, then I'm back to (1).
>> Otherwise, I can work on improvements and modifications required for the
>> library to officially make it in.
>>
>> In both cases, the scope of the project seems reasonable to me.
>>
>> There is nothing similar in the list of proposed GSOC projects, so if
>> someone is interested in mentoring this project, please speak up. I
>> will then go through the normal process for proposing GSOC projects
>> and include a more detailed description of it, and we'll see what
>> happens.
>>
>>
>> Regards,
>>
>> Louis Dionne
>>
>> [1]: http://github.com/ldionne/mpl11
>>
>>
> Do you have the results of the benchmark:
>
> https://github.com/ldionne/mpl11/blob/master/benchmark/foldl.rb
>
> ?
>
I tried using the cmake, but got a diagnostic about missing doc directory:

~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master 
$ ls
CMakeCache.txt  CMakeFiles  CMakeLists.txt  README.md  cache-table-0.2 
examples  include  rtti.kdev4  src  test
~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master 
$ mkdir build
~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master 
$ cd build
~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master/build 
$ cmke ..
cmke: command not found
~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master/build 
$ cmake ..
CMake Error at CMakeLists.txt:13 (add_subdirectory):
   add_subdirectory given source "doc" which is not an existing directory.

-- Configuring incomplete, errors occurred!
~/prog_dev/boost/boost-svn/ro/boost_1_54_0/sandbox/rw/variadic_templates/libs/composite_storage/sandbox/cjgillot/rtti-master/build 
$

When you get the time, could you please revise the build system to avoid 
that problem?

-regards,
Larry

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