9Proprietary + Confidential Large Scale Refactorings & Automated Refactoring Tools 10 10Refactoring Tool Use Cases 02 11Proprietary + Confidential Consistent Code Formatting 12 12Proprietary + Confidential (const auto& i: arr){ // analyze i } } 78 78 Writing Our Own Tidy CheckReally Cool Stuff You Can Build 79 void OldAPI(int v, int m, int d){ NewAPI(m, v); } void NewAPI(int m, int v); - OldAPI(vel OldAPI(vel, mass, dist); + NewAPI(mass, vel); ABSL_DEPRECATE_AND_INLINE()Really Cool Stuff You Can Build 80 if (absl::GetFlag(FLAGS_Example_for_cpp_con)) { foo(); } else { bar(); } foo();In Conclusion

Reliable, Fast and Safe Builds Damien co-founder, tipi.build @daminetreg / damien@tipi.build Antonio DevEx Engineer, EngFlow @TheGrizzlyDev / antonio@engflow.comA love ❤ letter to CMakeGiving CMake tackle first Memory Safety Arithmetic SafetySanitizers for C++ builds with CMake github.com/tipi-build/sanitizers-cmakeSanitizers for C++ builds AddressSanitizer (ASan) UndefinedBehaviorSanitizer (UBSsan) decent amount of CPU power Let's look at other build systemsLearning from other build-systemsParallelism How many independent targets can a build system run concurrently at most?Parallelism Level

Why is my build so slow? Sam Privett 12 Disclaimer: The views and opinions expressed in this presentation are solely those of the presenters and do not necessarily represent the views, positions, Visualizing Compilation IntroductionLines of Code ≈ Longer Build Times 8Lines of Code 📈 9Build Times 📈 10Build Times 📈 11Build Times 📈 12Build Times 📈 13Boiling Frog 14Developer Productivity 15 linker, etc) 18Visualization 19 - Interactive Trace Viewer - https://ui.perfetto.dev/ - Can build and run server locally as well - Chrome Event Tracing Format JSON - … and more!20 VisualizationClang

Fanchen Su, XOffsetDatastructure, CppCon 2024 41. Title • 1 Long Title: • Using Modern C++ to Build XOffsetDatastructure: A Zero-Encoding and Zero-Decoding High-Performance Serialization Library in Fanchen Su, XOffsetDatastructure, CppCon 2024 51. Title • 1 Long Title: • Using Modern C++ to Build XOffsetDatastructure: A Zero-Encoding and Zero-Decoding High-Performance Serialization Library in

● 15 years working on build systems and software process ● CMake developer ○ Designing and implementing features, performance improvements ○ Maintaining and improving build systems which use CMake Pushing forward modules support in other build systems ■ xmake ■ bazel 2Outline 1. What are compilation databases? 2. How do modules change the status quo? 3. Build databases 3Compilation Databases: Overview https://clang.llvm.org/docs/JSONCompilationDatabase.html ● Widely used and available ○ Generated by build systems ○ Used by static analysis to know how to analyze sources ○ IDEs to understand how a source

A Common Package Specification: Getting Build Tools to Talk to Each Other Lessons Learned From Making Thousands of Binaries Consumable by Any Build System Diego Rodriguez-Losada @ CppCon 2023Outline 3#include int main(void){ … deflateInit(&defstream, Z_BEST_COMPRESSION); Build system scripts Problem definition and scope 1. Define the version to use 2. Define the configuration: (system package manager or language package manager), build from source by the user, with that configuration 4. Pass information to the build system so it can locate and use it successfully 4#include

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 All platforms, all build systems and compilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.5 Stable . . API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 New build system integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.13 New extensions plugins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.14 Package

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 All platforms, all build systems and compilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.5 Stable . . API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 New build system integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.13 New extensions plugins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.14 Package

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 All platforms, all build systems and compilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.5 Stable . . API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 New build system integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.13 New extensions plugins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.14 Package

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4 All platforms, all build systems and compilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.5 Stable . . API . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 New build system integrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.13 New extensions plugins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.14 Package