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SCons
scons.org
What it is
SCons is an open source software construction tool and cross-platform alternative to Make, with builds configured through Python scripts. It analyzes dependencies automatically for C, C++ and Fortran, and users can extend that analysis with their own scanners. Built-in support covers C, C++, D, Java, Fortran, Yacc, Lex, Qt, SWIG, TeX and LaTeX; more tools are available from contributed sources. Builds can run in parallel, detect changes using MD5 signatures and cache built files. SCons can also generate Microsoft Visual Studio project and solution files. It is distributed under the MIT license, which permits use, modification and redistribution without charge if the license is retained. The project recommends installing the Python wheel from PyPI with pip, and offers standalone bundles; scons-local can run without installation from a local directory. SCons 4.11.1 requires Python 3.7 or later and normally has no other dependencies. Build files execute as Python code, and SCons is not sandboxed: file operations and processes run with the user's identity. The project says its current User's Guide may have missing or incorrect material.
Spec sheet
- Purpose
- SCons is an open source software construction tool that provides a cross-platform alternative to Make.Read 7 Oct 2026 · scons.org
- Security
- SCons build files execute as Python code, and the project advises treating them with the same trust considerations as other interpreted code.Read 7 Oct 2026 · scons.org
- Support
- The project provides mailing lists, a Discord server and an IRC channel for community contact.Read 7 Oct 2026 · scons.org
- License
- SCons is distributed under the MIT open source license, which permits use, modification and redistribution without charge subject to retaining the license.Read 7 Oct 2026 · scons.org
- Founded
- 2000Read 28 Sep 2026 · scons.org
- Build configuration
- SCons build configuration files are Python scripts.Read 7 Oct 2026 · scons.org
- Build features
- SCons supports parallel builds, build-change detection using MD5 signatures, and caching built files.Read 7 Oct 2026 · scons.org
- Build performance
- SCons supports parallel builds and caching of built files.Read 7 Oct 2026 · scons.org
- Dependency analysis
- It includes automatic dependency analysis for C, C++ and Fortran, which can be extended with user-defined scanners.Read 7 Oct 2026 · scons.org
- Documentation caveat
- The current User's Guide is described as a work in progress and may have missing or incorrect material.Read 7 Oct 2026 · scons.org
- Download limitation
- The SCons project no longer provides Windows installers, Source RPMs or Red Hat RPMs, and recommends pip or a distribution package instead.Read 7 Oct 2026 · scons.org
- Installation
- The download page recommends installing the Python wheel from PyPI with pip for most situations and recommends a Python virtual environment for maximum control over a build environment.Read 7 Oct 2026 · scons.org
- Language and tool support
- Built-in support includes C, C++, D, Java, Fortran, Yacc, Lex, Qt, SWIG, TeX and LaTeX, with additional tools available from contributed sources.Read 7 Oct 2026 · scons.org
- Microsoft Visual Studio
- SCons can generate Microsoft Visual Studio project and solution files.Read 7 Oct 2026 · scons.org
- Project history
- SCons began as the ScCons build tool design that won the Software Carpentry SC Build competition in August 2000.Read 7 Oct 2026 · scons.org
- Runtime requirement
- SCons 4.11.1 requires Python 3.7 or later and normally has no other dependencies.Read 7 Oct 2026 · scons.org
- Security limitation
- SCons says its operation is not sandboxed and that it runs file operations and processes on behalf of the user's identity.Read 7 Oct 2026 · scons.org
- Security model
- SCons executes build scripts as code, so the project advises treating them with the same trust considerations as other interpreted code.Read 7 Oct 2026 · scons.org
- Security reporting
- The project directs vulnerability reports to its security contact email address.Read 7 Oct 2026 · scons.org
- Standalone use
- The scons-local bundles can run from a local directory without installation and can be shipped with software packages that use SCons.Read 7 Oct 2026 · scons.org
Plans and prices
Free Free MIT license · use, modify, or redistribute without charge Read 7 Oct 2026 · scons.org
Strong points and limits
Strong points
- Automatic dependency analysis for C, C++ and Fortran.
- Supports parallel builds and build caching.
- Generates Microsoft Visual Studio project and solution files.
- MIT license permits use, modification and redistribution.
- Standalone bundles can run without installation.
Limits
- Build scripts run as code and are not sandboxed.
- Current User's Guide may contain missing or incorrect material.
- Windows installers are no longer provided.
Who it suits
SCons suits developers who want a cross-platform build tool with Python-based configuration and support for several languages and tools. Users should be comfortable treating build files as code running under their identity.
Verdict
SCons offers configurable, cross-platform builds with dependency analysis, parallel execution and caching. Its code-executing, unsandboxed model and documentation caveat merit attention before adoption.
Where Specifiction places it
- Build Automation Software#16 of 427.9
