{"id":8496,"date":"2023-10-23T07:43:16","date_gmt":"2023-10-23T07:43:16","guid":{"rendered":"https:\/\/www.modernescpp.com\/?p=8496"},"modified":"2023-10-23T07:43:17","modified_gmt":"2023-10-23T07:43:17","slug":"c20-more-details-about-module-support-of-the-big-three","status":"publish","type":"post","link":"https:\/\/www.modernescpp.com\/index.php\/c20-more-details-about-module-support-of-the-big-three\/","title":{"rendered":"C++20: More Details about Module Support of the Big Three"},"content":{"rendered":"\n

In my last post, “C++20: Module Support of the Big Three<\/a>“, I compiled a simple module with the Big Three. Today, I drill deeper using the GCC, Clang, and Microsoft Compiler.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Honestly, this post will be pretty technical and end with a curious note. Additionally, it requires basic modules knowledge. If you don’t have it, read my previous post about modules:<\/p>\n\n\n\n

    \n
  1. The Advantages of Modules<\/a><\/li>\n\n\n\n
  2. A Simple math Modul<\/a><\/li>\n\n\n\n
  3. Module Interface Unit and Module Implementation Unit<\/a><\/li>\n\n\n\n
  4. Structure Modules<\/a><\/li>\n\n\n\n
  5. Open Questions to Modules<\/a><\/li>\n\n\n\n
  6. Private Module Fragment and Header Units<\/a><\/li>\n\n\n\n
  7. C++20: Module Support of the Big Three<\/a><\/li>\n<\/ol>\n\n\n\n

    Compiler Support of Modules<\/h2>\n\n\n\n

    I use the Microsofts cl.exe 19.29.20133 for x64, the Clang 16.0.5, and the GCC 11.1.0 compiler for my experiments. <\/p>\n\n\n\n

    Microsoft Visual Compiler<\/h3>\n\n\n\n

    Let me start with the Microsoft Compiler.<\/p>\n\n\n\n

    The Microsoft Visual Compiler provides various options for the using of modules.<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    Additionally, there are a few common cl.exe<\/code> compiler options.<\/p>\n\n\n\n

    <\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    I use various compiler options for the ifc file in the following command lines. The ifc file is the module and contains the metadata description of the module interface.<\/p>\n\n\n\n