# C++ Team Blog The latest in C++, Visual Studio, VS Code, and vcpkg from the MSFT C++ team This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Bringing Correctly Rounded Math to Production with LLVM-libc DevFeed: [Bringing Correctly Rounded Math to Production with LLVM-libc]() Original publisher: [Read original article]() Author: Cody Miller, Tue Ly, Michael Jones Published: 2026-09-16T22:09:50Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [LLVM](), [Support](), [C++]() Tags: [c-plus-plus](), [compiler](), [llvm](), [msvc]() ### AI overview This guest post explains LLVM-libc's design philosophy of portability and modularity, and discusses its math functions, including their use by MSVC for compile-time evaluation and runtime execution when /Zc:cmath is enabled. ### Source excerpt As we mentioned in the last cmath blog post, MSVC is using LLVM-libc for compile-time evaluation and runtime execution of math functions when /Zc:cmath is enabled. I invited LLVM-libc contributors Michael Jones and Tue Ly to write a guest blog post about how they've achieved what they've achieved. This is that blog post! I hope [...] The post Bringing Correctly Rounded Math to Production with LLVM-libc appeared first on C++ Team Blog. ## C++ in the Age of AI: Visual Studio at CppCon 2026 DevFeed: [C++ in the Age of AI: Visual Studio at CppCon 2026]() Original publisher: [Read original article]() Author: Augustin Popa Published: 2026-09-14T19:34:43Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [C++](), [Visual Studio](), [GitHub Copilot](), [Visual Studio 2026](), [build performance](), [MSVC](), [debugging](), [Optimization](), [Refactoring](), [Artificial Intelligence]() Tags: [ai](), [build-optimization](), [build-performance](), [c-plus-plus](), [copilot](), [cppcon](), [debugging](), [github-copilot](), [msvc](), [visual-studio](), [visual-studio-2026]() ### AI overview This companion reading guide covers how Visual Studio 2026 is evolving C++ development with improved code navigation, build and runtime performance, language feature support, debugging, modernization, refactoring, and AI-assisted workflows using GitHub Copilot. ### Source excerpt At CppCon 2026, we shared how Visual Studio is evolving to help you work more effectively with large C++ codebases, improve build and runtime performance, adopt the latest language features, and incorporate AI into your existing workflows. This post is a companion reading guide for our session, C++ in the Age of AI: How Visual [...] The post C++ in the Age of AI: Visual Studio at CppCon 2026 appeared first on C++ Team Blog. ## What's New for C++ Developers in Visual Studio 2026 (18.7 - 18.10) DevFeed: [What's New for C++ Developers in Visual Studio 2026 (18.7 - 18.10)]() Original publisher: [Read original article]() Author: Augustin Popa Published: 2026-09-14T06:38:16Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [Visual Studio 2026](), [C++](), [GitHub Copilot](), [MSVC](), [AI-assisted coding](), [CMake](), [Git](), [Submodules]() Tags: [2026](), [build-optimization](), [c-plus-plus](), [cmake](), [copilot](), [git](), [modernization](), [msvc](), [submodules](), [testing](), [tools](), [visual-studio](), [visual-studio-2026]() ### AI overview This Microsoft C++ Team Blog post recaps Visual Studio 2026 versions 18.7 through 18.10 for C++ developers. It covers C++ reliability fixes, GitHub Copilot modernization for upgrading MSBuild and CMake projects to newer MSVC Build Tools, improved code navigation, discoverable MSVC Build Tools installations, Git worktrees and submodules in the IDE, and debugging improvements. ### Source excerpt Over the past few months, we have continued shipping monthly Visual Studio 2026 releases, delivering improvements across all stages of the development cycle. In this blog post, we'll recap everything that changed from version 18.7 through 18.10 (released this month) that is relevant for C++ developers. This includes new tools for maintaining and navigating C++ [...] The post What's New for C++ Developers in Visual Studio 2026 (18.7 - 18.10) appeared first on C++ Team Blog. ## Microsoft at CppCon 2026 DevFeed: [Microsoft at CppCon 2026]() Original publisher: [Read original article]() Author: Augustin Popa Published: 2026-09-14T00:16:42Z Content type: news Language: en Sources: [C++ Team Blog]() Topics: [C++](), [Microsoft](), [Visual Studio](), [Visual Studio 2026](), [GitHub Copilot](), [MSVC](), [Visual Studio Code](), [Artificial Intelligence](), [Optimization](), [CMake]() Tags: [ai](), [c-plus-plus](), [cmake](), [copilot](), [cppcon](), [github-copilot](), [microsoft](), [msvc](), [optimization](), [safety](), [survey](), [visual-studio](), [visual-studio-2026]() ### AI overview Microsoft's CppCon 2026 sessions cover modern C++ development, including AI-assisted workflows, MSVC, Visual Studio, Visual Studio Code, compiler optimization, C++ safety, and stricter compiler warnings. The article also provides conference logistics, speaker sessions, and a survey invitation. ### Source excerpt Microsoft will be at CppCon 2026 in Aurora, Colorado, which is taking place from September 14 through 18. Join us for talks from Microsoft speakers and colleagues across the C++ community and visit the Microsoft booth Monday through Thursday to meet the team and discuss the tools, technologies, and challenges that matter to you. If [...] The post Microsoft at CppCon 2026 appeared first on C++ Team Blog. ## MSVC C++23: constexpr cmath with LLVM Libc DevFeed: [MSVC C++23: constexpr cmath with LLVM Libc]() Original publisher: [Read original article]() Author: Cody Miller Published: 2026-09-10T21:19:59Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [MSVC](), [C++](), [math]() Tags: [c-plus-plus](), [feature](), [llvm](), [math](), [msvc](), [os](), [performance](), [tools](), [visual-studio]() ### AI overview MSVC is preparing an experimental C++23 implementation of compile-time-evaluable standard math functions, powered by a new math library. The article explains the existing UCRT math-function arrangement and concerns about accuracy, compatibility, performance, and OS-dependent behavior. ### Source excerpt Proposal P0533R9 made numerous math functions in the standard library compile-time evaluable in C++23. Implementing the feature required a good bit of time and effort, but MSVC is preparing its experimental implementation for the 14.52 build tools (compiler version 19.52)! We are still refining the feature, so expect the dust to settle only when this [...] The post MSVC C++23: constexpr cmath with LLVM Libc appeared first on C++ Team Blog. ## MSVC Build Tools Preview updates - September 2026 DevFeed: [MSVC Build Tools Preview updates - September 2026]() Original publisher: [Read original article]() Author: Eric Brumer Published: 2026-09-09T21:26:30Z Content type: release Language: en Sources: [C++ Team Blog]() Topics: [C++](), [Visual Studio 2026]() Tags: [c](), [c-plus-plus](), [diagnostics](), [msvc](), [race-condition](), [release](), [september-2026](), [updates](), [visual-studio](), [visual-studio-2026]() ### AI overview MSVC Build Tools Preview v14.52 adds C and C++ compiler conformance, diagnostics, and stability fixes, including fixes for compiler errors and C++ modules. ### Source excerpt The MSVC Build Tools Preview is updated regularly with the latest features and fixes from the MSVC development team. This post covers updates from the past month, currently targeting the v14.52 release. This encompasses changes across the compiler frontend, backend, linker, standard library, and related tools. Although you can acquire the MSVC Build Tools Preview [...] The post MSVC Build Tools Preview updates - September 2026 appeared first on C++ Team Blog. ## Clearer Build Optimization Results with GitHub Copilot DevFeed: [Clearer Build Optimization Results with GitHub Copilot]() Original publisher: [Read original article]() Author: David Li Published: 2026-08-13T18:18:50Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [GitHub Copilot](), [Optimization](), [build performance](), [build times](), [C++](), [Windows](), [Visual Studio 2026]() Tags: [build-insights](), [build-optimization](), [build-performance](), [build-times](), [c-plus-plus](), [github-copilot](), [optimization](), [performance](), [visual-studio](), [visual-studio-2026](), [windows](), [workflow]() ### AI overview GitHub Copilot build performance for Windows now provides deterministic messages for optimization outcomes, including successful improvements, changes below the success threshold, unsuccessful changes, and builds that were too short to analyze. Successful results include baseline and final build times, measured improvement, and effects on iterative builds when applicable. ### Source excerpt We know that slow builds are a consistent theme in feedback from C++ developers. Your feedback helped us to shape GitHub Copilot build performance for Windows, an agent that can trace your build, find bottlenecks, apply optimizations, and measure the result. When using the agent, the clearest outcome is a straightforward win. The agent changes [...] The post Clearer Build Optimization Results with GitHub Copilot appeared first on C++ Team Blog. ## MSVC Build Tools Preview updates - August 2026 DevFeed: [MSVC Build Tools Preview updates - August 2026]() Original publisher: [Read original article]() Author: Eric Brumer Published: 2026-08-13T15:01:10Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [MSVC](), [C++](), [Compiler](), [toolchain](), [Code generation](), [Optimization](), [Visual Studio]() Tags: [c-plus-plus](), [code-generation](), [diagnostics](), [features](), [ide](), [msvc](), [optimization](), [release](), [tools](), [updates](), [visual-studio](), [visual-studio-2026]() ### AI overview The article summarizes August 2026 updates to the MSVC Build Tools Preview, targeting the v14.52 release. It covers compiler conformance, diagnostics, C++ modules, code generation, optimization, and ARM64 improvements. ### Source excerpt Try the latest updates to MSVC Build Tools Preview The post MSVC Build Tools Preview updates - August 2026 appeared first on C++ Team Blog. ## What's New in vcpkg (Jul 2026) DevFeed: [What's New in vcpkg (Jul 2026)]() Original publisher: [Read original article]() Author: Augustin Popa Published: 2026-08-11T22:43:41Z Content type: release Language: en Sources: [C++ Team Blog]() Topics: [releases](), [C++]() Tags: [bug](), [c-plus-plus](), [changelog](), [releases](), [sbom](), [supply-chain](), [vcpkg]() ### AI overview The July 2026 vcpkg release adds SBOM metadata improvements, updates 302 ports, and includes deployment, compatibility, robustness, documentation, and bug-fix changes. ### Source excerpt These updates include major SBOM improvements in vcpkg-tool, 302 updated ports including multiple major library upgrades, and other minor improvements and bug fixes. The post What's New in vcpkg (Jul 2026) appeared first on C++ Team Blog. ## Pure Virtual C++ 2026 Is a Wrap DevFeed: [Pure Virtual C++ 2026 Is a Wrap]() Original publisher: [Read original article]() Author: Marian Luparu Published: 2026-07-22T16:00:35Z Content type: news Language: en Sources: [C++ Team Blog]() Topics: [C++](), [Visual Studio 2026](), [build times]() Tags: [ai](), [announcement](), [build-performance](), [c-plus-plus](), [conference](), [interop](), [pure-virtual-c-plus-plus]() ### AI overview Pure Virtual C++ 2026 has concluded, and recordings of its featured and on-demand C++ conference sessions are available. Topics include C++/Rust interoperability, AI-assisted tooling, build times, C++20 modules, packages, MSVC, and profile-guided optimization. ### Source excerpt Pure Virtual C++ 2026 is a wrap. Every featured and on-demand session is now available on YouTube -- catch up on C++/Rust interop, AI-driven tooling, build performance, and more. The post Pure Virtual C++ 2026 Is a Wrap appeared first on C++ Team Blog. ## Pure Virtual C++ 2026 Is Now Live! DevFeed: [Pure Virtual C++ 2026 Is Now Live!]() Original publisher: [Read original article]() Author: Marian Luparu Published: 2026-07-21T15:54:35Z Content type: news Language: en Sources: [C++ Team Blog]() Topics: [C++]() Tags: [announcement](), [c-plus-plus](), [cmake](), [conference](), [msvc](), [pure-virtual-c-plus-plus](), [streaming](), [vcpkg](), [visual-studio](), [vs-code](), [youtube]() ### AI overview Pure Virtual C++ 2026 is live as a free virtual C++ conference with featured sessions, live chat Q&A, and on-demand talks. ### Source excerpt Pure Virtual C++ 2026 is streaming now -- watch five featured sessions live with Q&A, plus a full on-demand playlist, all free. The post Pure Virtual C++ 2026 Is Now Live! appeared first on C++ Team Blog. ## C++ Dependencies Without the Headache: vcpkg + Copilot CLI DevFeed: [C++ Dependencies Without the Headache: vcpkg + Copilot CLI]() Original publisher: [Read original article]() Author: Augustin Popa Published: 2026-07-20T21:05:25Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [GitHub Copilot CLI](), [Vcpkg](), [C++](), [GitHub Copilot](), [MSVC](), [Command-line interface](), [GitHub]() Tags: [blog](), [c-plus-plus](), [cli](), [cmake](), [copilot](), [github](), [github-copilot](), [github-copilot-cli](), [msvc](), [open-source](), [programming](), [pure-virtual-c-plus-plus](), [vcpkg](), [writing-code]() ### AI overview A practical walkthrough of building a C++ console application from an empty folder with CMake, MSVC Build Tools, vcpkg, and GitHub Copilot CLI. It demonstrates dependency selection, installation, integration, reproducible builds, and controlled dependency updates through a terminal-first workflow. ### Source excerpt At Pure Virtual C++ 2026, we build a C++ console app from an empty folder using CMake, MSVC, and GitHub Copilot CLI. This walkthrough shows a practical prompt sequence for dependency selection, reproducible builds, and controlled updates. The post C++ Dependencies Without the Headache: vcpkg + Copilot CLI appeared first on C++ Team Blog. ## Pure Virtual C++ 2026 Is Tomorrow and On-Demand Sessions Are Now Available DevFeed: [Pure Virtual C++ 2026 Is Tomorrow and On-Demand Sessions Are Now Available]() Original publisher: [Read original article]() Author: Marian Luparu Published: 2026-07-20T16:05:54Z Content type: news Language: en Sources: [C++ Team Blog]() Topics: [C++](), [MSVC](), [Optimization](), [Vcpkg](), [GitHub Copilot CLI]() Tags: [announcement](), [blog](), [c-plus-plus](), [cpu](), [msvc](), [optimization](), [performance](), [pure-virtual-c-plus-plus](), [release](), [synthetic](), [twitch](), [youtube]() ### AI overview Pure Virtual C++ 2026 is a free virtual conference whose on-demand sessions are already available on YouTube. The article previews the live broadcast and highlights sessions on Sample Profile-Guided Optimization, C++ tooling, package management, MSVC, and C++ standards. ### Source excerpt The on-demand sessions for Pure Virtual C++ 2026 are available now on YouTube. Watch seven talks on SPGO, vcpkg + Copilot CLI, CMake Tools, PackageReference, MSVC upgrades, and C++23/26 status -- then join us live tomorrow. The post Pure Virtual C++ 2026 Is Tomorrow and On-Demand Sessions Are Now Available appeared first on C++ Team Blog. ## Faster C++ iterative builds with GitHub Copilot DevFeed: [Faster C++ iterative builds with GitHub Copilot]() Original publisher: [Read original article]() Author: David Li Published: 2026-07-17T14:22:57Z Content type: article Language: en Sources: [C++ Team Blog]() Topics: [build times](), [C++](), [AI Bots]() Tags: [agent](), [build-insights](), [build-optimization](), [build-performance](), [build-times](), [c-plus-plus](), [copilot](), [diagnostics](), [game-development](), [github](), [github-copilot](), [optimization](), [performance](), [tool](), [visual-studio](), [visual-studio-2026](), [windows](), [workflow]() ### AI overview GitHub Copilot build performance for Windows adds an iterative build tool that evaluates optimization changes against incremental builds as well as clean builds. ### Source excerpt Slow builds are a consistent theme of feedback from C++ developers. We built GitHub Copilot build performance for Windows so you can leverage Copilot to optimize your project's build times. This workflow will find optimizations that bring your build times down. At first, we only measured the impact of build optimizations on full clean builds. [...] The post Faster C++ iterative builds with GitHub Copilot appeared first on C++ Team Blog.