Caching Compiler (RECC) CppCon 2024 September 19, 2024 Shivam Bairoliya Software Engineer© 2024 Bloomberg Finance L.P. All rights reserved. What is RECC? ● Remote Execution Caching Compiler (RECC) ○ Open source build tool that wraps compiler commands and optionally forwards them to a remote build execution service ○ Encompasses the capabilities of both ccache and distcc ○ Supports remote linking linking and caching ● Designed to share caches across diverse toolchains ○ Works with many compiler toolchains (GCC, Clang, Solaris CC) ○ Supports multiple operating systems (Linux, macOS, Solaris)

company. Ⓡ © 2021 Apex.AI, Inc. Igor Bogoslavskyi Testing the compilability of the code at runtime© 2021 Apex.AI, Inc. Errors have a high cost, so rigorous testing is a must We use increasingly test_halving.cpp image: Flaticon.com Compiler image: Flaticon.com Test binary GoogleTest ✅ flags© 2021 Apex.AI, Inc. Proposed testing pipeline image: Flaticon.com Compiler image: Flaticon.com Test binary does image: Flaticon.com Test binary GoogleTest StaticTest Fixture ✅ image: Flaticon.com Compiler image: Flaticon.com test_halving.cpp flags image: Flaticon.com test_compile_1.cpp image: Flaticon

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) installer and execute it. The default /.conan/settings.yml file, containing the definition of compiler versions, etc., will be upgraded if Conan does not detect local changes, otherwise it will create

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) Building with Other Configurations. • When a GCC compiler >= 5.1 is detected, the setting modeling for the c++ standard library is set as follows: The compiler.libcxx is set to libstdc++ that represents the

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) installer and execute it. The default /.conan/settings.yml file, containing the definition of compiler versions, etc., will be upgraded if Conan does not detect local changes, otherwise it will create

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) installer and execute it. The default /.conan/settings.yml file, containing the definition of compiler versions, etc., will be upgraded if Conan does not detect local changes, otherwise it will create

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) installer and execute it. The default /.conan/settings.yml file, containing the definition of compiler versions, etc., will be upgraded if Conan does not detect local changes, otherwise it will create

"7", "7.1", "7.2"] Most package creators want to use the major-only settings, like -s compiler=gcc -s compiler.version=5, in- stead of specifying the minors too. The default profile detection and creation you have a default profile you may want to update it to reflect this: [settings] os=Linux compiler=gcc compiler.version=7 #instead of 7.2 Conan associated tools (conan-package-tools, conan.cmake) have package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) dependencies 13 conan Documentation, Release 1.6.1 For a command like conan install . -s os="Linux" -s compiler="gcc", the steps are: • Check if the package recipe (for Poco/1.9.0@pocoproject/stable package)

package will be compatible with specific settings, such as the OS it was created for, the compiler and compiler version, or the computer architecture. If the package is built again from the same sources -s compiler="Visual Studio", which will be specific for Windows users. If on a different system, the reader should adapt to their own platform and settings (for example conan install . -s compiler=gcc) installer and execute it. The default /.conan/settings.yml file, containing the definition of compiler versions, etc., will be upgraded if Conan does not detect local changes, otherwise it will create