# Copyright (c) 2001 Steven Knight
# __FILE__ __REVISION__ __DATE__ __DEVELOPER__


                 SCons - a software construction tool

                            Change Log



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.