mk

mk
Name	mk

mk

mk is a build automation tool and makefile dialect used for specifying and controlling the build process of software projects. It provides directives, variables, and implicit rules to describe dependencies and commands, enabling reproducible compilation across environments such as UNIX, BSD, and Plan 9. mk implementations and dialects have influenced and intersected with tools in the software toolchain including compilers, linkers, package managers, and continuous integration systems.

Etymology and Overview

The name derives from the common abbreviation for "make", aligning with utilities like Make (software), GNU Make, and nmake. mk variants appear across platforms such as BSD distributions, NetBSD, OpenBSD, FreeBSD, and Plan 9 from Bell Labs systems. It often coexists with toolchains including GCC, Clang (compiler), GNU Binutils, LLVM projects, and build orchestration services like Jenkins (software), Travis CI, and GitHub Actions. Implementations may follow conventions established by projects such as The Open Group standards, and interact with packaging systems like pkgsrc, Ports Collection (FreeBSD), and dpkg.

History and Development

mk originates from early make utilities developed in the era of Unix, tracing conceptual lineage to Make (software) and the original work by Stuart Feldman at Bell Labs. Variants evolved in parallel with operating system projects such as BSD, Plan 9, and vendor systems including SunOS and Solaris (operating system). Influential developments include the introduction of pattern rules and built-in suffix rules in GNU Make and portability-focused initiatives in pkgsrc and NetBSD that spawned mk dialects. Over time, mk variants have been adapted for integration with toolchains like Autoconf, Automake, CMake, and SCons, and for use with revision control systems such as Git and Subversion.

Features and Syntax

mk dialects typically provide variable assignment, conditional directives, include mechanisms, and dependency specification similar to constructs found in Make (software) and GNU Make. Common features include implicit rules, suffix rules, pattern matching, and phony targets; they interface with compilers like GCC and Clang (compiler), linkers such as GNU Binutils, and assemblers like GNU Assembler. Some implementations emphasize portability across POSIX-compliant shells and build environments used by projects like Autoconf and Automake, while others add extensions influenced by Plan 9 from Bell Labs build tools. Syntax nuances affect interoperability with continuous integration platforms like Jenkins (software), GitHub Actions, and packaging frameworks such as pkgsrc.

Usage and Implementations

mk is used in system distributions, embedded projects, and application builds; notable adopters include NetBSD, OpenBSD, FreeBSD, and package collections like pkgsrc and Ports Collection (FreeBSD). Implementations appear in toolchains associated with Plan 9 environments and in simplified make programs bundled with BusyBox. Integrations exist for IDEs and editors that support build systems, including Visual Studio Code, Vim, and Emacs (text editor). mk files are invoked via command-line environments such as Bourne shell derivatives and POSIX shells, and coordinate with compilers and build utilities from projects like LLVM and GCC.

Comparisons and Alternatives

mk is compared against other build systems such as Make (software), GNU Make, CMake, Ninja (build system), SCons, Meson (software), and Bazel (software). Unlike generator-based tools like CMake, mk dialects often represent direct, hand-authored recipes comparable to GNU Make semantics, and differ from declarative graph-oriented systems such as Ninja (build system) and Bazel (software). Portability-focused mk variants are favored in projects with provenance in BSD and pkgsrc, whereas meta-build systems like Autotools and Meson (software) are used where multi-platform generation or language-agnostic configuration is required.

Community and Ecosystem

The mk ecosystem comprises contributors and users from operating system communities such as NetBSD, OpenBSD, FreeBSD, and projects like pkgsrc. Documentation and discussions occur on platforms including Mailing list archives, GitHub, GitLab, and issue trackers for distributions and toolchains like LLVM and GCC. Tool maintainers and package maintainers coordinate with continuous integration providers like Jenkins (software) and GitHub Actions to validate mk-based builds across architectures supported by x86, ARM, and POWER family hardware. The ecosystem intersects with software distribution systems such as Debian, OpenBSD ports, and pkgsrc repositories.

Category:Build automation tools