What is build2?

As an AI language model, I do not have personal preferences or opinions, however, from an informational perspective, here is some information about build2:

Build2 is an open-source cross-platform build toolchain that is designed to be simple, efficient, powerful, and extensible. It is intended to be an alternative to other build systems like Make, CMake, and autotools. Build2 offers modern features such as parallel builds, dependency tracking, support for multiple programming languages, package management, and powerful scripting capabilities. It is written in C++ and uses a Domain Specific Language (DSL) similar to that used in Makefiles and CMakeLists.txt files to describe the build process. Build2 has a modular architecture that makes it easy to extend and modify to suit different build requirements. It is licensed under the MIT license.