Incremental Build
Incremental build is a software development concept where a build system only recompiles or rebuilds the parts of a project that have changed since the last build, rather than rebuilding the entire project from scratch. This approach leverages dependency tracking to identify modified source files and their downstream dependencies, significantly reducing build times and improving developer productivity. It is commonly implemented in build tools like Make, Gradle, and modern JavaScript bundlers.
Developers should use incremental builds to accelerate development cycles, especially in large projects where full rebuilds can take minutes or hours, by only processing changed components. This is critical in continuous integration/continuous deployment (CI/CD) pipelines to provide faster feedback and in local development environments to enable rapid iteration. It is particularly valuable for languages with long compilation times (e.g., C++, Java) or complex dependency graphs.