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# Copyright (c) 2001, 2002 Steven Knight
# __FILE__ __REVISION__ __DATE__ __DEVELOPER__
SCons - a software construction tool
Change Log
RELEASE 0.04 -
From Charles Crain:
- Significant performance improvements in the Node.FS and
Scanner subsystems.
- Fix signatures of binary files on Win32 systems.
- Allow LIBS and LIBPATH to be strings, not just arrays.
- Print a traceback if a Python-function builder throws an exception.
From Steven Knight:
- Fix using a directory as a Default(), and allow Default() to
support white space in file names for strings in arrays.
- Man page updates: corrected some mistakes, documented various
missing Environment methods, alphabetized the construction
variables and other functions, defined begin and end macros for
the example sections, regularized white space separation, fixed
the use of Export() in the Multiple Variants example.
- Function action fixes: None is now a successful return value.
Exceptions are now reported. Document function actions.
- Add 'Action' and 'Scanner' to the global keywords so SConscript
files can use them too.
- Removed the Wrapper class between Nodes and Walkers.
- Add examples using Library, LIBS, and LIBPATH.
- The C Scanner now always returns a sorted list of dependencies
so order changes don't cause unnecessary rebuilds.
- Strip $(-$) bracketed text from command lines. Use this to
surround $_INCDIRS and $_LIBDIRS so we don't rebuild in response
to changes to -I or -L options.
- Add the Ignore() method to ignore dependencies.
- Provide an error message when a nonexistent target is specified
on the command line.
- Remove targets before building them, and add an Environment
Precious() method to override that.
- Eliminate redundant calls to the same builder when the target is a
list of targets: Add a ListBuilder class that wraps Builders to
handle lists atomically. Extend the Task class to support building
and updating multiple targets in a single Task. Simplify the
interface between Task and Taskmaster.
- Add a --debug=pdb option to re-run SCons under the Python debugger.
- Only compute a build signature once for each node.
From Steve Leblanc:
- Add var=value command-line arguments.
RELEASE 0.03 - Fri, 11 Jan 2002 01:09:30 -0600
From Charles Crain:
- Performance improvements in the Node.FS and Sig.Calculator classes.
- Add the InstallAs() method.
- Execute commands through an external interpreter (sh, cmd.exe, or
command.com) to handle redirection metacharacters.
- Allow the user to supply a command handler.
From Steven Knight:
- Search both /usr/lib and /usr/local/lib for scons directories by
adding them both to sys.path, with whichever is in sys.prefix first.
- Fix interpreting strings of multiple white-space separated file names
as separate file names, allowing prefixes and suffixes to be appended
to each individually.
- Refactor to move CompositeBuilder initialization logic from the
factory wrapper to the __init__() method, and allow a Builder to
have both an action and a src_builder (or array of them).
- Refactor BuilderBase.__call__() to separate Node creation/lookup
from initialization of the Node's builder information.
- Add a CFile Builder object that supports turning lex (.l) and
yacc (.y) files into .c files.
- Document: variable interpretation attributes; how to propogate
the user's environment variables to executed commands; how to
build variants in multiple BuildDirs.
- Collect String, Dict, and List type-checking in common utility
routines so we can accept User{String,Dict,List}s all over.
- Put the Action factory and classes into their own module.
- Use one CPlusPlusAction in the Object Builder's action dictionary,
instead of letting it create multiple identical instances.
- Document the Install() and InstallAs() methods.
From Steve Leblanc:
- Require that a Builder be given a name argument, supplying a
useful error message when it isn't.
From Anthony Roach:
- Add a "duplicate" keyword argument to BuildDir() that can be set
to prevent linking/copying source files into build directories.
- Add a "--debug=tree" option to print an ASCII dependency tree.
- Fetch the location of the Microsoft Visual C++ compiler(s) from
the Registry, instead of hard-coding the location.
- Made Scanner objects take Nodes, not path names.
- Have the C Scanner cache the #include file names instead of
(re-)scanning the file each time it's called.
- Created a separate class for parent "nodes" of file system roots,
eliminating the need for separate is-parent-null checks everywhere.
- Removed defined __hash__() and __cmp() methods from FS.Entry, in
favor of Python's more efficient built-in identity comparisons.
RELEASE 0.02 - Sun, 23 Dec 2001 19:05:09 -0600
From Charles Crain:
- Added the Install(), BuildDir(), and Export() methods.
- Fix the -C option by delaying setting the top of the FS tree.
- Avoid putting the directory path on the libraries in the LIBS
construction variable.
- Added a GetBuildPath() method to return the full path to the
Node for a specified string.
- Fixed variable substitution in CPPPATH and LIBPATH.
From Steven Knight:
- Fixed the version comment in the scons.bat (the UNIX geek used
# instead of @rem).
- Fix to setup.py so it doesn't require a sys.argv[1] argument.
- Provide make-like warning message for "command not found" and
similar errors.
- Added an EXAMPLES section to the man page.
- Make Default() targets properly relative to their SConscript
file's subdirectory.
From Anthony Roach:
- Documented CXXFLAGS, CXXCOM, and CPPPATH.
- Fixed SCONS_LIB_DIR to work as documented.
- Made Default() accept Nodes as arguments.
- Changed Export() to make it easier to use.
- Added the Import() and Return() methods.
RELEASE 0.01 - Thu Dec 13 19:25:23 CST 2001
A brief overview of important functionality available in release 0.01:
- C and C++ compilation on POSIX and Windows NT.
- Automatic scanning of C/C++ source files for #include dependencies.
- Support for building libraries; setting construction variables
allows creation of shared libraries.
- Library and C preprocessor search paths.
- File changes detected using MD5 signatures.
- User-definable Builder objects for building files.
- User-definable Scanner objects for scanning for dependencies.
- Parallel build (-j) support.
- Dependency cycles detected.
- Linux packages available in RPM and Debian format.
- Windows installer available.
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