SCons
SCons is an open source software construction tool that provides a cross-platform alternative to Make.
What SCons is
SCons is an open source software construction tool that provides a cross-platform alternative to Make. Its build configuration files are Python scripts, and automatic dependency analysis covers C, C++, and Fortran, with user-defined scanners available to extend it. Built-in support includes C, C++, D, Java, Fortran, Yacc, Lex, Qt, SWIG, TeX, and LaTeX, with additional tools from contributed sources. SCons supports parallel builds, detects build changes using MD5 signatures, and caches built files. It can also generate Microsoft Visual Studio project and solution files. The MIT license permits use, modification, and redistribution without charge subject to retaining the license. The project recommends installing the Python wheel from PyPI using pip and also provides standalone bundles. The scons-local bundles can run from a local directory without installation and can be shipped with software packages that use SCons. SCons 4.11.1 requires Python 3.7 or later and normally has no other dependencies. Build files execute as Python code, and the project says operation is not sandboxed.
Good
- Build configuration uses Python scripts.
- Analyzes C, C++, and Fortran dependencies.
- Supports parallel builds and caching.
- Can generate Visual Studio project and solution files.
- MIT license permits use and redistribution without charge.
Watch out
- Build scripts execute as code.
- Operation is not sandboxed.
- Current User's Guide may have missing or incorrect material.
- Windows installers are no longer provided.
Who it suits
SCons suits developers building software across Linux, macOS, and Windows who want Python-based build configuration. It may also fit teams that need dependency analysis, parallel builds, caching, or Visual Studio project generation.
Verdict
SCons offers a broad set of build tools under an MIT license, with Python-based configuration and support for multiple languages. Users should consider the implications of executing unsandboxed build scripts and the project's stated documentation caveat.
Plans and prices
From SCons's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | MIT license · use, modify, or redistribute without charge |
The facts
Each one read from SCons's own pages, with the date it was checked.
What it does
- Build configuration
- SCons build configuration files are Python scripts.checked 7 Oct 2026
- Build features
- SCons supports parallel builds, build-change detection using MD5 signatures, and caching built files.checked 7 Oct 2026
- Build performance
- SCons supports parallel builds and caching of built files.checked 7 Oct 2026
- Dependency analysis
- It includes automatic dependency analysis for C, C++ and Fortran, which can be extended with user-defined scanners.checked 7 Oct 2026
- Documentation caveat
- The current User's Guide is described as a work in progress and may have missing or incorrect material.checked 7 Oct 2026
- Download limitation
- The SCons project no longer provides Windows installers, Source RPMs or Red Hat RPMs, and recommends pip or a distribution package instead.checked 7 Oct 2026
- 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.checked 7 Oct 2026
- 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.checked 7 Oct 2026
- License
- SCons is distributed under the MIT open source license, which permits use, modification and redistribution without charge subject to retaining the license.checked 7 Oct 2026
- Microsoft Visual Studio
- SCons can generate Microsoft Visual Studio project and solution files.checked 7 Oct 2026
- Project history
- SCons began as the ScCons build tool design that won the Software Carpentry SC Build competition in August 2000.checked 7 Oct 2026
- Purpose
- SCons is an open source software construction tool that provides a cross-platform alternative to Make.checked 7 Oct 2026
- Runtime requirement
- SCons 4.11.1 requires Python 3.7 or later and normally has no other dependencies.checked 7 Oct 2026
- Security
- SCons build files execute as Python code, and the project advises treating them with the same trust considerations as other interpreted code.checked 7 Oct 2026
- Security limitation
- SCons says its operation is not sandboxed and that it runs file operations and processes on behalf of the user's identity.checked 7 Oct 2026
- Security model
- SCons executes build scripts as code, so the project advises treating them with the same trust considerations as other interpreted code.checked 7 Oct 2026
- Security reporting
- The project directs vulnerability reports to its security contact email address.checked 7 Oct 2026
- Standalone use
- The scons-local bundles can run from a local directory without installation and can be shipped with software packages that use SCons.checked 7 Oct 2026
- Support
- The project recommends its users mailing list as the starting point for questions and also provides Discord and IRC channels.checked 7 Oct 2026
The company
- Founded
- 2000checked 28 Sep 2026
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