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Thursday, September 28 • 9:00am - 10:00am
Building C++ Modules

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C++ Modules TS is now implemented (to various degrees) by GCC, Clang, and MSVC. The aim of this talk is to provide practical information on the mechanics of creating and consuming modules with these compilers. It is based on our experience adding modules support to the build2 toolchain and then modularizing some of its components.

We start with a brief introduction to C++ modules, why we need them, and how they relate to other physical design mechanisms, namely headers, namespaces, and libraries.

Next we explore the kind of integration modules will require from a C++ build system. Specifically, when and where a module binary interface is built? How can a build system discover which modules are needed? What are the implications for parallel and distributed builds? Can we finally get rid of the preprocessor? And what happens to header-only libraries in this brave new modularized world?

With a firm understanding of the implications C++ modules have on the build process, we can try to answer some of the module design questions: What is an appropriate module granularity? Should we have separate module interface and implementation units? Can we have a dual header/module interface for legacy support? Are module-only libraries to become all the rage?

Speakers
avatar for Boris Kolpackov

Boris Kolpackov

Chief Hacking Officer, Code Synthesis
Boris Kolpackov is a founder and CHO (Chief Hacking Officer) at Code Synthesis, a company focusing on the development of open-source tools and libraries for C++. For the past 10 years Boris has been working on solving interesting problems in the context of C++ using domain-specif... Read More →


Thursday September 28, 2017 9:00am - 10:00am
Colossus Theater Meydenbauer Center

Attendees (184)