libffi VS sol2

Compare libffi vs sol2 and see what are their differences.


A portable foreign-function interface library. (by libffi)


Sol3 (sol2 v3.0) - a C++ <-> Lua API wrapper with advanced features and top notch performance - is here, and it's great! Documentation: (by ThePhD)
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libffi sol2
5 7
2,325 2,771
1.6% -
7.9 7.1
1 day ago 26 days ago
C C++
GNU General Public License v3.0 or later MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of libffi. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-12-01.
  • Installing Python in Ubuntu 20.04
    2 projects | | 1 Dec 2021
    build-essential installs everything required for compiling basic software written in C and C++ in this case Python. Read more... zlib1g-devis the development package of the compression library that implements the deflate compression methods and essential in Python's installation and other installations as well. Read more... libncurses5-dev is the development package for the curses library that provides a terminal-independent screen-painting and keyboard-handling tool. Read more... libgdbm-dev is a development library for GDBM whose functionality is to store key/data pairs in a data file. Read more... libnss3-dev Read more... libssl-dev Read more... libreadline-dev Read more... libffi-dev Read more... libsqlite3-dev Read more... wget Read more... libbz2-dev Read more... In the next step we can either manually download the latest release of Python from the Python Official Release page or use wget which we have installed in previous command. To download using wget, paste the following command in the terminal to download Python in the computer.
  • buildozer -v android debug error
    4 projects | | 2 Nov 2021
    [INFO]: -> running basename
  • Part 1. Small Intro to SWIG
    1 project | | 22 Oct 2021
    libffi C library
  • Julia ❤ Python
    5 projects | | 24 Jul 2021
    If you have read my earlier posts you know I love multilingual programming. One important part of multilingual programming is how to interface one language with other. Typically this is called FFI or foreign function interface. At the lowest level often there are libraries (aka bindings) to talk across languages or across implementations of same language e.g. libffi. In my undergrad we did a group project where we created language bindings to separate algorithmic part written in python and opencv and X11 logic in c.
  • Can't compile gollvm on Void Linux
    1 project | | 9 Jan 2021
    is itself related to the bug in the build script, for dependency. Thus not an issue of your distro/beyond the scope of this bug.


Posts with mentions or reviews of sol2. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-12-06.
  • Sayonara, C++, and Hello to Rust
    4 projects | | 6 Dec 2021
    I mean, if you could tell from my original post, I like C++ templates. The point is not to constantly write templates in your calling code, the point is to architect a library with templates that affords flexibility and dynamism so that the calling code is easy to write, read, and reason about. Consider, for example, the sol2[0] example usage code vs the actual source code itself[1].


  • Design Issues for Foreign Function Interfaces (2004)
    3 projects | | 30 Nov 2021
    Very interesting article!

    Unfortunately, it doesn't mention Lua, which in my opinion has one of the most elegant C APIs that I have seen. It is entirely stack based, which means you only need to work with primitive types, such as numbers, C strings and user provided opaque pointers. As a consequence, you never have to care about memory management because Lua doesn't even let you access the actual Lua objects.

    You want to create a table (= Lua's dictionary/array hybrid) and set a field "foo" to 5? lua_newtable() creates a new table and pushes it onto the stack. Then you push "foo" with lua_pushstring() and 5 with lua_pushnumber(). Finally you call lua_settable(), which pops the key and value from the stack, checks if the top of the stack contains a table, and if yes, sets the given field to the given value. The actual table structure is never exposed!

    This kind of stack manipulation might seem unusual and a bit unweildy, but what you get is safety. If you mess up the stack or perform illegal operations, Lua will call an error handler, but the VM should never crash. The stack API can be seen as the fundamental layer upon which people can create nice abstractions for their host language of choice. Examples are "sol2" for C++ ( or "lupa" for Python (

    The public API is contained in "lua.h": "lauxlib.h" offers some useful helper functions:

    For comparison, this is Python's "Limited" C API:

    If you want to learn more about Lua's C API, have a look at section 4 in

  • Hardcore metaprogramming in the wild
    17 projects | | 26 Oct 2021
    Next to some already said examples: sol2 v3.0 - a Lua to C++ "header only" bridge...
  • Embedding Lisp in C++ – A Recipe
    5 projects | | 8 Jun 2021
  • My experience binding a couple of scripting engines with C++
    2 projects | | 24 May 2021
    Well, by this I mean "unfamiliar to me", of course. Lol.

    Actually Lua is something to consider from the point of view of usage: it is an industry standard actually. However, all those small quirks in semantics... and classes can be done in many ways (that is what I understand, via metatables)...

    In ChaiSCript or Wren there is one true way and you are done. You might like it or not, but it leads to less confusion, especially if you use most of the time what is in the mainstream.

    This is by no means a bad thing in itself, it is just about how ergonomic or time-consuming it could be for myself: I just feel more comfortable with ChaiScript, Wren or Squirrel than with Lua. Even AngelsCript is also more similar to what you already have. So when exposing APIs there is much less friction.

    Truth to be told, there is also which looks great and something to consider. It makes binding things quite easier and gives you object-oriented Lua. You could rely on that.

    It was just my subjective choice. There is no 100% right choice. Probably, if I found people that are comfortable with Lua I would use that. But the case is that this is a project of mine as it stands now.

  • Enabling C/C++ compilation in an application.
    4 projects | | 1 May 2021
    3) Similiar to 2, but use more common scripting languages: chai, cs-script, sol2 (c++ framework to embed lua)
  • Any articles/tutorials on how to implement C# scripting to a C++ engine?
    1 project | | 8 Mar 2021

What are some alternatives?

When comparing libffi and sol2 you can also consider the following projects:

SWIG - SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.

Lua - Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.

ChaiScript - Embedded Scripting Language Designed for C++

Wren - The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.


CppSharp - Tools and libraries to glue C/C++ APIs to high-level languages

Duktape - Duktape - embeddable Javascript engine with a focus on portability and compact footprint

V8 - The official mirror of the V8 Git repository

ChakraCore - ChakraCore is an open source Javascript engine with a C API. [Moved to:]

nelson - Nelson numerical interpreter