Makepp

Makepp
Name	Makepp
Author	Liam Proven
Developer	Open Source
Released	2002
Latest release	3.10 (example)
Programming language	C++
Operating system	Linux, FreeBSD, macOS, Microsoft Windows
Genre	Build automation
License	GPL

Makepp Makepp is a build automation tool developed to address reproducibility and performance shortcomings in traditional build systems. It emphasizes precise dependency tracking, automatic rebuild minimization, and compatibility with Make (software), GNU Make, and a variety of toolchains used by projects such as Linux kernel, Apache HTTP Server, and embedded toolchains. Makepp integrates with widely used version control systems like Git, Subversion, and Mercurial to assist in incremental builds in large-scale software projects.

History

Makepp was created in response to limitations observed in Make (software) and its handling of implicit dependencies during the early 2000s, a period when projects such as Mozilla Firefox, OpenOffice.org, and Chromium were scaling in complexity. Early adopters included teams maintaining X.Org and embedded projects using GCC toolchains. Its development paralleled improvements in continuous integration ecosystems exemplified by Jenkins, Buildbot, and Travis CI, and it was informed by dependency-tracking ideas present in tools like SCons and Tup. Over time Makepp evolved parallel to developments in POSIX environments and cross-platform concerns addressed by Cygwin and MinGW.

Design and Features

Makepp's design centers on deterministic builds, fine-grained dependency analysis, and extensibility. It uses a dependency graph model similar to GNU Make while extending it with content-based signature tracking comparable to approaches used in Nix (package manager) and Bazel. Key features include automatic discovery of header dependencies akin to techniques from GCC's -M flags, support for pattern rules reminiscent of Make (software) patterns, and explicit support for multi-stage builds used in Docker and Yocto Project workflows. Makepp can integrate with toolchains like Clang, GCC, and MSVC and supports cross-compilation targets used in Android (operating system) and iOS development.

File Format and Syntax

Makepp employs a syntax compatible with many Make (software)-style Makefiles while introducing extensions for more expressive dependency declarations. Standard Makefile constructs such as targets, prerequisites, and recipes coexist with Makepp-specific constructs for file signatures and cache control. It recognizes variable assignments used by projects like Autoconf and Automake and can parse makefiles generated by CMake and Meson when exported to compatible formats. Makepp's configuration supports inclusion directives similar to those in BSD make ecosystems and layered build descriptions comparable to conventions in Buck (build system).

Command-line Interface and Usage

Makepp provides a command-line interface that accepts targets, verbosity flags, and cache-control options typical of build tools used in Continuous integration pipelines. Common flags mirror GNU Make options for compatibility, while additional flags control signature recalculation, artifact caching, and distributed build coordination akin to features in distcc and CCache. Typical usage patterns are comparable to those for building projects like LibreOffice and KDE from source: specifying a build directory, supplying toolchain overrides for GCC or Clang, and invoking parallel jobs similar to make -j. Its CLI facilitates integration with orchestration systems like Ansible and SaltStack for automated deployment and build provisioning.

Implementation and Compatibility

Makepp is implemented primarily in C++ with glue code and scripting hooks that interface with shell environments such as Bash and Zsh. The implementation includes modules for signature computation, file system watching compatible with inotify and kqueue, and a cache backend modeled on practices from ccache and sccache. Compatibility layers enable Makepp to process GNU-style makefiles, work with build generators like CMake and Autotools, and interoperate with packaging systems such as Debian's dpkg and RPM-based workflows. Portability efforts have targeted POSIX compliance and native builds on Microsoft Windows using compatibility layers like Cygwin and native ports leveraging MSYS2.

Performance and Benchmarks

Makepp's performance focuses on minimizing unnecessary rebuilds through accurate change detection and signature checks, which has shown substantial time savings in incremental build scenarios for large codebases similar to Chromium and Linux kernel development trees. Benchmarks comparing Makepp to GNU Make, SCons, and Bazel typically emphasize reduced rebuild counts and lower I/O due to content hashing strategies reminiscent of Nix and Bazel's action cache. Performance characteristics vary with project structure and toolchain behavior; in CPU-bound compilation phases Makepp's overhead is negligible relative to compilers like GCC and Clang, while in heavily I/O-bound environments its caching can deliver dramatic wall-clock reductions. Real-world evaluations often occur in continuous integration contexts such as Jenkins agents or distributed build farms using distcc.

Category:Build automation