clang c++ modules

Nov 7, 2012 · Roadmap • The fundamental brokenness of headers • A module system for the C family • Building better tools Wednesday, November 7, 12 

People using C++11 and C++14 and asking for more ○ Many Clang does not yet perform this optimization in any cases ○ Can use Modules in Clang

Module details are plans and ideas; no full implementation exists yet Clang clang scan deps has mentioned supporting it ○ MSVC Interested Once that is done, C++20 aware imported targets would have to ride that bandwagon to add

C++ Modules Compile ‐Vme Modules • Compile with clang ‐fmodules flag It will pickup any module maps on the include path and build reusable modules

To stay consistent with Clang, ROOT also uses Module Map files to configure Module contents allDictcxxpch Interpreter PCH aPCM bPCM cPCM dPCM e

Mar 6, 2019 · Support for Clang 701 module compilation for alternate data 22 export int int i300 = 300; } C++ g++ fmodules ts c O0 m148cpp BASH 

Module name and namespace name need not be related • import does not imply using directive 9 clang++ std=c++2a fmodules ts x c++ o drivero \

The compilation model of C++ is inherited from C, and as such half a century old gcc (branch) clang msvc Syntax specification C++20  

LLVM IR Intermediate Representation Input to LLVM Modules can be combined to a larger module Useful for Clang LLVM Frontend C C++ Compiler