scons -- An Open Source software construction tool
http://www.scons.org
SCons is an Open Source software construction tool--that is, a build
tool; an improved substitute for the classic Make utility; a better way
to build software. SCons is based on the design which won the Software
Carpentry build tool design competition in August 2000.
SCons "configuration files" are Python scripts, eliminating the need
to learn a new build tool syntax. SCons maintains a global view of all
dependencies in a tree, and can scan source (or other) files for implicit
dependencies, such as files specified on #include lines. SCons uses
MD5 signatures to rebuild only when the contents of a file have really
changed, not just when the timestamp has been touched. SCons supports
side-by-side variant builds, and is easily extended with user- defined
Builder and/or Scanner objects.