@@@ All of library code is in LibSpace, user code without frame is in UserSpace@@@ As opposed to library sharing entities with other libraries+ @@@ Deducing this removes the need for CRTP2 Slides1. https://godbolt default implementation (something which can be done generally) @@@ All of library code is in LibSpace, user code without frame is in UserSpace1. @@@ Terms: 1. Overload: multiple functions with the same name library code is in LibSpace, user code without frame is in UserSpace 1. Basic: https://godbolt.org/z/nej3977z8@@@ This is done in the lib containing namespace (and not on user space) 2. Partial template

A Relaxed Guide to memory_order_relaxed Hans Boehm Paul E. McKenney Google Facebook CPPCON 2020std::atomic/std::atomic_ref and memory_order_relaxed ● C++ atomic demonstrably correct even in strict C++20.Questions? References: Boehm & McKenney, “P2055: A Relaxed Guide to memory_order_relaxed” We recklessly assumed: Boehm, “"P2215: Undefined behavior" and the concurrency

. . . . . . . . . . . . . . . . . . . . . . 7 2 What’s new in Conan 2 9 2.1 Conan 2 migration guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 New graph integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.5 New custom user commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 New features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 5 Devops guide 143 5.1 Using ConanCenter packages in production environments . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . 7 2 What’s new in Conan 2 9 2.1 Conan 2 migration guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 New graph integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.5 New custom user commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 New features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 5 Devops guide 143 5.1 Using ConanCenter packages in production environments . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stable From Conan 1.0 and onwards, there is a commitment to stability, with the goal of not breaking user space while evolving the tool and the platform. This means: • Moving forward to following minor versions Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Tip: Conan 2.0 is already released, you can install the latest Conan version from PyPI doing: