Cling Transitions to LLVM’s Clang-Repl

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Over the last decade we developed an interactive, interpretative C++ interpreter (aka REPL) as part of the high-energy physics (HEP) data analysis project – ROOT. We invested a significant effort to replace CINT, the C++ interpreter used until ROOT5, with a newly implemented REPL based on llvm – Cling. Cling is a core component of ROOT and has been in production since 2014.

This is a companion discussion topic for the original entry at https://root.cern/blog/cling-in-llvm/
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Does it mean that new Clang-Repl will make it possible to use any C/C++ lib without any additional efforts, e.g. wrapping?
I’d like to use Runge-Kutta from GSL (GNU Scientific Library) to solve differential equations.

Thanks.
Regards. Valeriy

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Hi Valeriy,
I think @Axel or @moneta can give you more details

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3 posts were split to a new topic: ClassDef / ClassImp

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A post was split to a new topic: ODE (Runge-Kutta 4, etc.) from GSL or boost from inside ROOT interactive session

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Hi Valeriy,

Thanks for your comment. I’d need more details to answer your question in details. For example, the GSL RK to solve differential equations in C++ or Python? What do you mean by wrapping – static bindings?

I try to answer broadly to your question broadly. The goal of Clang-Repl is to offer a Cling-like experience to the broader community with improved stability and tighter integration with the Clang compiler. Once that happen we should be one step closer to have C++ language (eg Python) bindings on the fly. That would indeed enable using some libraries which do not have static bindings (swig or pybind11).

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AFAIR gsl is C, and that works just fine even today, in cling.