Re: [Getfem-users] C++11 in Getfem

[Andriy Andreykiv]

Dear Kostas and Getfem users,

At our company we build Getfem on Windows with Intel C++ as well as MSVS 2012 C++

and on Linux with GCC 4.81. As far as I know Clang supports 11th standard too. 

These are major C++ compilers (correct me if I"m wrong) and all of them 

happily support major C++11 features.

What you, Kostas, are proposing, about conditional compilation of 11th features, sure possible, but 

is really a big burden to maintain, at least for our side. Imagine if I use Lambda's and auto's and then 

I have to conditionally provide code for the case C++11 is not enabled, then I have to sometimes 

re-design several functions. If I have to do that, then I have no reasons to use 11th features at all.

I do use conditional compilation now and then, during implementation of multithreaded assembly. 

It, sure, makes sense for performance reasons, but C++11 is always available and not such a reason. 

Given the above I would propose to Getfem community to have 11th standard enforced by default,

and allow code that compiles only with C++11 on. Please tell me what you think about this.

Best regards,

                      Andriy

On 19 March 2014 11:17, Konstantinos Poulios <address@hidden> wrote:

Dear Andriy,

actually the intention of my change was getfem to support C++11 by default if the compiler supports it by default.

Are you using msvc or gcc? I thought that my change would affect only compiling with gcc which officially does not support c++11 by default.

Even with gcc one can still enable c++11 by adding the appropriate CXXFLAGS at running the configure script.

Within getfem we just need to use
#if __cplusplus > 199711L

#endif

conditionals for features that depend on C++11.

Is there any practical issue that I am forgetting here?

Best regards

Kostas

On Wed, Mar 19, 2014 at 10:26 AM, Andriy Andreykiv <address@hidden> wrote:

Dear Getfem users,

Currently, Getfem is configured by default not to support C++11 (revision 4536).

May I ask why?  I would really want to have it supported. I like to use lambda's auto's and the new for loop syntax in my code, but,

more importantly, C++11 includes libraries that otherwise have to be included through Boost (I'm using at least <thread> and <atomic>)

Best regards,

                        Andriy

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