# Copyright (c) 2001, 2002 Steven Knight SCons - a software construction tool Welcome to the SCons development tree. The purpose of this tree is not just to hack SCons code, but to package SCons for production distribution. To that extent, the normal development cycle (enforced by Aegis) is not to test the code directly, but to package SCons, unpack the package, "install" SCons in a test subdirectory, and then to run the tests against the unpacked and installed software. This helps eliminate problems caused by, for example, failure to update the list of files to be packaged. Note that if all you want to do is install and run SCons, it will probably be easier for you to download and install the scons-{version}.tar.gz package rather than to work with the packaging logic in this tree. LATEST VERSION ============== Before going further, you can check that this package you have is the latest version at the SCons download page: http://www.scons.org/download.html INSTALLATION ============ To install SCons from this package, you must first populate the build/scons/ directory. (For an easier way to install SCons, without having to populate this directory, use the scons-{version}.tar.gz package.) If you already have an appropriate version of SCons installed on your system, populate the build/scons/ directory by running: $ scons build/scons If you don't have SCons version 0.04 or later already installed on your system, you can use SCons itself to populate the build/scons/ directory with a little more work: $ SCONS_LIB_DIR=`pwd`/src/engine python src/script/scons.py build/scons Either command populates the build/scons/ directory with the necessary files and directory structure to use the Python-standard setup script as follows: # cd build/scons # python setup.py install This will install the scons script in the default system script directory (/usr/bin or C:\Python*\Scripts, for example) and the build engine in an appropriate SCons library directory (/usr/lib/scons or C:\Python*\SCons, for example). You should have system installation privileges (that is, "root" or "Administrator") when running the setup.py script to install SCons in the default system directories. If you don't have system installation privileges, you can use the --prefix option to specify an alternate installation location, such as your home directory: $ cd build/scons $ python setup.py install --prefix=$HOME This will install the scons script itself in $HOME/bin and the associated library in $HOME/lib/scons TESTING ======= Tests are run by the runtest.py script in this directory. There are two types of tests in this package. Unit tests for individual SCons modules live underneath the src/engine/ subdirectory and are the same base name as the module with "Tests.py" appended--for example, the unit test for the Builder.py module is the BuilderTests.py script. End-to-end tests of SCons live in the test/ subdirectory. You may specifically list one or more tests to be run: $ python runtest.py src/engine/SCons/BuilderTests.py $ python runtest.py test/option-j.py test/Program.py Alternatively, the runtest.py script takes a -a option that searches the tree for all of the tests and runs them: $ python runtest.py -a If more than one test is run, the runtest.py script prints a summary of how many tests passed, failed, or yielded no result, and lists any unsuccessful tests. The above invocations all test directly the files underneath the src/ subdirectory, and do not require that a build be performed first. The runtest.py script supports supports additional options to run tests against unpacked packages in the build/test*/ subdirectories. This is in the process of being reworked for the next release, however, so for now, see the comments in the runtest.py script itself if you want to run tests against a package. BUILDING PACKAGES ================= We now use SCons (version 0.04 or later) to build its own packages. If you already have an appropriate version of SCons installed on your system, you can build everything by simply running it: $ scons If you don't have SCons version 0.04 or later already installed on your system, you can build this version of SCons with itself with a little more work: $ SCONS_LIB_DIR=`pwd`/src/engine python src/script/scons.py Depending on the utilities installed on your system, any or all of the following packages will be built: build/dist/scons-0.04-1.noarch.rpm build/dist/scons-0.04-1.src.rpm build/dist/scons-0.04.linux-i686.tar.gz build/dist/scons-0.04.tar.gz build/dist/scons-0.04.win32.exe build/dist/scons-doc-0.04.tar.gz build/dist/scons-src-0.04.tar.gz build/dist/scons_0.04-1_all.deb The SConstruct file is supposed to be smart enough to avoid trying to build packages for which you don't have the proper utilities installed. For example, if you don't have Debian packaging tools installed, it should just not build the .deb package, not fail the build. If you receive a build error, please report it to the scons-devel mailing list. Note that in addition to creating the above packages, the default build will also unpack one or more of the packages for testing. CONTENTS OF THIS PACKAGE ======================== Not guaranteed to be up-to-date (but better than nothing): bin/ Miscellaneous utilities used in SCons development. Right now, there's a copy of the script we use to translate an Aegis change into a CVS checkin. build/ This doesn't exist yet if you're looking at a vanilla source tree. This is generated as part of our build process, and it's where, believe it or not, we *build* everything. Construct The old "Makefile" Cons-based for the SCons distribution. This is obsolete as of version 0.04, but it's being left around for a little while, just in case... config The Aegis configuration, governing much of how we use Aegis to build, test, control source, etc. debian/ Files needed to construct a Debian package. The contents of this directory are dictated by the Debian Policy Manual (http://www.debian.org/doc/debian-policy). The package will not be accepted into the Debian distribution unless the contents of this directory satisfy the relevant Debian policies. doc/ SCons documentation. A variety of things here, in various stages of (in)completeness. etc/ A subdirectory for miscellaneous things that we need. Right now, it has copies of Python modules that we use for testing, and which we don't want to force people to have to install on their own just to help out with SCons development. HOWTO/ Documentation of SCons administrative procedures (making a change, releasing a new version). Maybe other administrative stuff in the future. README What you're looking at right now. rpm/ The .spec file for building our RPM packages. runtest.py Script for running our tests. By default, this will run a test against the code in the local src/ tree, so you don't have to do a build before testing your changes. Aegis uses it with an option that requires that you've done a build (aeb) before running tests. SConstruct The "Makefile" for the SCons distribution. src/ Where the actual source code is kept, of course. template/ Template files, used by Aegis to give you a head start when you aenf or aent a new file. test/ End-to-end tests of the SCons utility itself. These are separate from the individual module unit tests, which live side-by-side with the modules under src/. DOCUMENTATION ============= See the src/RELEASE.txt file for notes about this specific release, including known problems. See the src/CHANGES.txt file for a list of changes since the previous release. The doc/man/scons.1 man page is included in this package, and contains a section of small examples for getting started using SCons. Additional documentation for SCons is available at: http://www.scons.org/doc.html LICENSING ========= SCons is distributed under the MIT license, a full copy of which is available in the LICENSE.txt file. 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: http://www.opensource.org/ REPORTING BUGS ============== You can report bugs either by following the "Tracker - Bugs" link on the SCons project page: http://sourceforge.net/projects/scons/ or by sending mail to the SCons developers mailing list: scons-devel@lists.sourceforge.net MAILING LISTS ============= A mailing list for developers of SCons is available. You may send questions or comments to the list at: scons-devel@lists.sourceforge.net You may request a subscription to the scons-devel mailing list at: http://lists.sourceforge.net/lists/listinfo/scons-devel Subscription to the list is by approval. In practice, no one is being refused list membership right now, but we reserve the right to limit membership in the future and/or weed out lurkers. FOR MORE INFORMATION ==================== Check the SCons web site at: http://www.scons.org/ AUTHOR INFO =========== Steven Knight knight at baldmt dot com http://www.baldmt.com/~knight/ With more than a little help from the SCons Development team: Chad Austin Charles Crain Steve Leblanc Anthony Roach