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SCons - a software construction tool
This is the scons-README file for a version of SCons packaged for local
execution--that is, execution out of a specific local directory, without
having to install SCons as a system-wide utility.
You are likely reading this file in one of the following two situations:
1) You have unpacked an scons-local-{version} package and are
examining the contents.
In this case, you are presumably interested in using this
package to include a local copy of SCons with some other
software that you package, so that you can use SCons to build
your software without forcing all of your users to have it fully
installed. Instructions for this can be found below.
If you are not looking to use SCons in this way, then please
use either the scons-{version} package to install SCons on your
system, or the scons-src-{version} package if you want the full
source to SCons, including its packaging code and underlying
tests and testing infrastructure.
2) This file was included in some other software package so that
the package could be built using SCons.
In this case, follow the instructions provided with the
rest of the software package for how to use SCons to build
and/or install the software. The file containing build and
installation instructions will typically be named README or
Before going further, you can check for the latest version of the
scons-local package, or any SCons package, at the SCons download page:
Running SCons requires Python version 2.4 or later. There should be
no other dependencies or requirements to run SCons.
The default SCons configuration assumes use of the Microsoft Visual C++
compiler suite on WIN32 systems, and assumes a C compiler named 'cc',
a C++ compiler named 'c++', and a Fortran compiler named 'g77' (such
as found in the GNU C compiler suite) on any other type of system.
You may, of course, override these default values by appropriate
configuration of Environment construction variables.
Installation of this package should be as simple as unpacking the
archive (either .tar.gz or .zip) in any directory (top-level or a
subdirectory) within the software package with which you want to ship
Once you have installed this package, you should write an SConstruct
file at the top level of your source tree to build your software as you
see fit.
Then modify the build/install instructions for your package to instruct
your users to execute SCons as follows (if you installed this package in
your top-level directory):
$ python
Or (if, for example, you installed this package in a subdirectory named
$ python scons/
That should be all you have to do. (If it isn't that simple, please let
us know!)
This scons-local package consists of the following:
A copy of the copyright and terms under which SCons is
distributed (the Open Source Initiative-approved MIT license).
A disclaimer has been added to the beginning to make clear that
this license applies only to SCons, and not to any separate
software you've written with which you're planning to package
What you're looking at right now.
The SCons build engine. This is structured as a Python
The SCons script itself. The script sets up the Python
sys.path variable to use the build engine found in the
scons-local-{version}/ directory in preference to any other
SCons build engine installed on your system.
Because this package is intended to be included with other software by
experienced users, we have not included any SCons documentation in this
package (other than this scons-README file you're reading right now).
If, however, you need documentation about SCons, then consult any of the
following from the corresponding scons-{version} or scons-src-{version}
The RELEASE.txt file (src/RELEASE.txt file in the
scons-src-{version} package), which contains notes about this
specific release, including known problems.
The CHANGES.txt file (src/CHANGES.txt file in the
scons-src-{version} package), which contains a list of changes
since the previous release.
The scons.1 man page (doc/man/scons.1 in the scons-src-{version}
package), which contains a section of small examples for getting
started using SCons.
Additional documentation for SCons is available at:
SCons is distributed under the MIT license, a full copy of which is
available in the scons-LICENSE file in this package. The MIT license is
an approved Open Source license, which means:
This software is OSI Certified Open Source Software. OSI
Certified is a certification mark of the Open Source Initiative.
More information about OSI certifications and Open Source software is
available at:
You can report bugs either by following the "Tracker - Bugs" link
on the SCons project page:
or by sending mail to the SCons developers mailing list:
A mailing list for users of SCons is available. You may send questions
or comments to the list at:
You may subscribe to the scons-users mailing list at:
Check the SCons web site at:
Steven Knight
knight at baldmt dot com
With plenty of help from the SCons Development team:
Chad Austin
Charles Crain
Steve Leblanc
Anthony Roach
Terrel Shumway