CppCon 2019: Converting to C++20 Modules

Nathan Sidwell



g++ -fmodules-ts <a href="http://foo.cc">foo.cc</a>

  • Using timyxml2 library as example
  • On header, one .cpp, one makefile, one test program
  • When you compile a module you get a compiled module interface (CMI)
  • CME filenames related to module names is implementation defined as is where they are placed

A header unit

  • step through telling bild system: mapping file with rules for .h.gcm

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