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# Copyright (c) 2001 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.
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.
- 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.
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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