# Faster C++ code intelligence for Copilot CLI with Whole Codebase Indexing

DevFeed: [Faster C++ code intelligence for Copilot CLI with Whole Codebase Indexing](<https://devfeed.tech/articles/faster-c-code-intelligence-for-copilot-cli-with-whole-codebase-indexing-58258.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/cppblog/faster-c-code-intelligence-for-copilot-cli-with-whole-codebase-indexing/>)

Author: Sinem Akinci

Published: 2026-09-22T22:27:22Z

Content type: release

Language: en

Sources: [C++ Team Blog](<https://devfeed.tech/sources/c-team-blog.md>)

Topics: [C++](<https://devfeed.tech/topics/c-plus-plus.md>), [GitHub Copilot CLI](<https://devfeed.tech/topics/github-copilot-cli.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Code](<https://devfeed.tech/topics/code.md>), [GitHub Copilot](<https://devfeed.tech/topics/github-copilot.md>), [CMake](<https://devfeed.tech/topics/cmake.md>)

Tags: [c-plus-plus](<https://devfeed.tech/tags/c-plus-plus.md>), [cli](<https://devfeed.tech/tags/cli.md>), [cmake](<https://devfeed.tech/tags/cmake.md>), [code](<https://devfeed.tech/tags/code.md>), [code-intelligence](<https://devfeed.tech/tags/code-intelligence.md>), [compilation](<https://devfeed.tech/tags/compilation.md>), [components](<https://devfeed.tech/tags/components.md>), [context](<https://devfeed.tech/tags/context.md>), [copilot](<https://devfeed.tech/tags/copilot.md>), [github](<https://devfeed.tech/tags/github.md>), [github-copilot](<https://devfeed.tech/tags/github-copilot.md>), [github-copilot-cli](<https://devfeed.tech/tags/github-copilot-cli.md>), [indexing](<https://devfeed.tech/tags/indexing.md>), [parallel](<https://devfeed.tech/tags/parallel.md>), [parsing](<https://devfeed.tech/tags/parsing.md>), [projects](<https://devfeed.tech/tags/projects.md>), [repositories](<https://devfeed.tech/tags/repositories.md>), [searching](<https://devfeed.tech/tags/searching.md>), [symbols](<https://devfeed.tech/tags/symbols.md>), [tracing](<https://devfeed.tech/tags/tracing.md>)

## AI overview

This release describes Whole Codebase Indexing for C++ code intelligence in GitHub Copilot CLI. The persistent index uses project compilation information to track symbols and relationships across source files and headers, improving navigation, code exploration, change analysis, and parallel-agent workflows without requiring an IDE to be open.

## Source excerpt

C++ repositories can contain millions of lines of code spread across deeply connected source files and headers. Without a reusable index, navigating to definitions, finding references, or searching for symbols may require portions of that information to be analyzed again as you move through the repository. C++ code intelligence in GitHub Copilot CLI is now [...] The post Faster C++ code intelligence for Copilot CLI with Whole Codebase Indexing appeared first on C++ Team Blog.