Merged revisions 1968-2115 via svnmerge from

http://scons.tigris.org/svn/scons/branches/core

........
  r1970 | stevenknight | 2007-06-01 18:22:37 -0500 (Fri, 01 Jun 2007) | 4 lines

  Import a vanilla Python 2.3 version of textwrap.py into the compatibility
  library, so we can track the changes we'll make to it.  (This isn't
  actually used yet.)
........
  r1971 | stevenknight | 2007-06-02 00:38:20 -0500 (Sat, 02 Jun 2007) | 2 lines

  Add a compatibility module for the textwrap.py module introduced in Python 2.3.
........
  r1972 | stevenknight | 2007-06-02 00:39:26 -0500 (Sat, 02 Jun 2007) | 2 lines

  Remove spurious <para> tags.
........
  r1973 | stevenknight | 2007-06-03 08:57:05 -0500 (Sun, 03 Jun 2007) | 2 lines

  Improved help-text generation using a textwrap.TextWrapper object.
........
  r1991 | stevenknight | 2007-06-10 16:03:18 -0500 (Sun, 10 Jun 2007) | 3 lines

  Add compatibility versions of the all() and any() functions introduced
  in Python 2.5.
........
  r1992 | stevenknight | 2007-06-10 17:02:18 -0500 (Sun, 10 Jun 2007) | 8 lines

  SCons-time portability fixes for Python 2.[12]:

      --  Use "from __future__ import nested_scopes".
      --  Create "False" and "True" builtins
      --  Work around the lack of a "prefix =" keyword argument to the
          Python 2.[12] version of the mktemp module.
      --  Accomodate pickier single-element tuple syntax.
........
  r1993 | stevenknight | 2007-06-10 17:27:43 -0500 (Sun, 10 Jun 2007) | 3 lines

  Delay instantiation of pstat.Stats objects until after we override
  sys.stdout, which as of Python 2.5 is captured when the object is created.
........
  r1994 | stevenknight | 2007-06-10 21:22:42 -0500 (Sun, 10 Jun 2007) | 6 lines

  Update various tests to handle the

          File "SConstruct", line 1, in <module>

  Messages in Python 2.5.
........
  r1995 | stevenknight | 2007-06-10 21:32:16 -0500 (Sun, 10 Jun 2007) | 3 lines

  Update tests to not raise strings as exceptions, which has been
  deprecated in Python 2.5.
........
  r1996 | stevenknight | 2007-06-10 21:41:57 -0500 (Sun, 10 Jun 2007) | 3 lines

  Fix the Scanner hash unit test for Python 2.5.  (Yes, it still works
  on previous versions, too.)
........
  r1997 | stevenknight | 2007-06-10 21:55:46 -0500 (Sun, 10 Jun 2007) | 3 lines

  Make the mock Node object's side_effect attribute a list, so it's
  iterable in Python 2.1 as well.
........
  r1998 | stevenknight | 2007-06-10 22:04:26 -0500 (Sun, 10 Jun 2007) | 3 lines

  Append an explicit tuple to the delayed_warnings list if there are
  problems interpreting --debug=memoizer.
........
  r1999 | stevenknight | 2007-06-11 11:09:07 -0500 (Mon, 11 Jun 2007) | 2 lines

  Fix --debug=time with -j when no arguments are rebuilt (all up-to-date).
........
  r2007 | stevenknight | 2007-06-14 13:56:35 -0500 (Thu, 14 Jun 2007) | 4 lines

  Performance improvement when looking up Nodes:  don't use is_String(),
  just check for the initial '#' that specifies a top-relative lookup,
  and handle the exceptions.
........
  r2008 | stevenknight | 2007-06-14 16:57:47 -0500 (Thu, 14 Jun 2007) | 11 lines

  First step in refactoring command-line flag processing: Split out the
  current processing into its own module, with minimal additional changes.
  Among the minimal changes:
    --  Store delayed warnings (for deprecated --debug= keywords)
        in the option parser object, not in a global variable.
    --  Remove the OptParser variable itself from the SCons.Script globals.
        It's going to change significantly (and no one's probably using
        it anyway).
    --  Don't move definition of the --version output with the OptParser,
        keep it in Main.py.
........
  r2009 | stevenknight | 2007-06-15 08:15:25 -0500 (Fri, 15 Jun 2007) | 3 lines

  Refactor the test/explain.py script into three individual scripts
  so it's easier to deal with.
........
  r2010 | stevenknight | 2007-06-15 09:49:07 -0500 (Fri, 15 Jun 2007) | 3 lines

  Handle Aliases in --debug=explain.  This is kind of hard-coded for the
  normal lookup, and should be better handled by the signature refactoring.
........
  r2011 | stevenknight | 2007-06-15 17:25:37 -0500 (Fri, 15 Jun 2007) | 5 lines

  Refactor use of the command-line parser object so it's localized to the
  top-level main() function, and not passed down through _exec_main() or
  to _main() itself.  Replace its functionality with use of an exception to
  signal that the top-level main() function should print its help message.
........
  r2012 | stevenknight | 2007-06-17 23:34:26 -0500 (Sun, 17 Jun 2007) | 2 lines

  Remove unnecessary import of __main__.
........
  r2013 | stevenknight | 2007-06-17 23:48:06 -0500 (Sun, 17 Jun 2007) | 2 lines

  Pass the options object to _main(), don't use a global.
........
  r2014 | stevenknight | 2007-06-18 00:12:09 -0500 (Mon, 18 Jun 2007) | 6 lines

  Qt test fixes for Windows:
  Link against a static library created by the test infrastructure,
  not a shared library.
  Escape backslashes in Windows path names.
  Skip test/QT/Tool.py if Qt isn't installed.
........
  r2015 | stevenknight | 2007-06-18 10:46:17 -0500 (Mon, 18 Jun 2007) | 3 lines

  Support GetOption('no_exec'), and update test/NodeOps.py to use it
  instead of reaching into the SCons.Script.Main internals.
........
  r2016 | stevenknight | 2007-06-18 11:04:39 -0500 (Mon, 18 Jun 2007) | 4 lines

  Restore use of a global delayed_warnings variable so the chicken-and-egg
  warning from trying to use --debug=memoizer on Python versions without
  metaclasses has somewhere to go.
........
  r2017 | stevenknight | 2007-06-18 11:37:59 -0500 (Mon, 18 Jun 2007) | 3 lines

  Have the test infrastructure create a mock Qt shared library on UNIX,
  static library on Windows.
........
  r2018 | stevenknight | 2007-06-18 11:48:10 -0500 (Mon, 18 Jun 2007) | 2 lines

  Pull more globals into the command-line parser options object.
........
  r2023 | stevenknight | 2007-06-19 16:46:02 -0500 (Tue, 19 Jun 2007) | 3 lines

  Refactor the __checkClass() and must_be_a_Dir() methods into a more
  general and more efficient must_be_same() method.
........
  r2025 | stevenknight | 2007-06-19 20:56:10 -0500 (Tue, 19 Jun 2007) | 3 lines

  More clean up:  change various self.fs.Entry() calls to calls through
  the bound directory.Entry() method.
........
  r2033 | stevenknight | 2007-06-20 20:03:23 -0500 (Wed, 20 Jun 2007) | 5 lines

  The --debug=count option doesn't work when run with Python - O, or
  from optimized compiled Python modules (*.pyo files), because the
  counting is all within "#if __debug__:" blocks that get stripped.
  Print a warning so it doesn't look like --debug=count is broken.
........
  r2037 | stevenknight | 2007-06-21 10:42:40 -0500 (Thu, 21 Jun 2007) | 3 lines

  Replace the _stripixes() function with a more efficient/readable version
  that was checked in, but commented out, prior to 0.96.96.
........
  r2040 | stevenknight | 2007-06-21 12:18:57 -0500 (Thu, 21 Jun 2007) | 2 lines

  Ignore *.pyo files, too, since one of the tests now generates them.
........
  r2051 | stevenknight | 2007-06-26 15:11:57 -0500 (Tue, 26 Jun 2007) | 5 lines

  Arrange for graceful shutdown of the worker threads by writing None to
  the requestQueue and having the worker threads terminate their processing
  loops when they read it.  We can then .join() the threads, to wait for
  their termination, avoiding exceptions in the threading library module.
........
  r2052 | stevenknight | 2007-06-26 15:12:53 -0500 (Tue, 26 Jun 2007) | 3 lines

  Have the SWIG tests that use the Python.h header skip gracefully if
  the Python development environment isn't installed.
........
  r2053 | stevenknight | 2007-06-26 15:23:55 -0500 (Tue, 26 Jun 2007) | 3 lines

  Massage the datestamp and IDs in the generated PDF so we can compare
  before-and-after output reliably regardless of when generated.
........
  r2054 | stevenknight | 2007-06-26 15:25:56 -0500 (Tue, 26 Jun 2007) | 3 lines

  Fix the regular expression that matches the Qt warning message when
  the moc executable is used as a hint.
........
  r2055 | stevenknight | 2007-06-26 15:48:21 -0500 (Tue, 26 Jun 2007) | 2 lines

  Fix 2.5.1 string exception warnings.
........
  r2056 | stevenknight | 2007-06-26 19:23:22 -0500 (Tue, 26 Jun 2007) | 2 lines

  Skip the scons-time tests if the Python version can't import __future__.
........
  r2057 | stevenknight | 2007-06-26 22:11:04 -0500 (Tue, 26 Jun 2007) | 3 lines

  Normalize PDF output in the bibtex rerun test as well.  Commonize the
  PDF normalization logic by putting it in QMTest/TestSCons.py.
........
  r2058 | stevenknight | 2007-06-26 22:50:39 -0500 (Tue, 26 Jun 2007) | 3 lines

  Duplicate a function declaration to suppress compiler warnings about a cast,
  when using certain systems/compilers.
........
  r2059 | stevenknight | 2007-06-26 22:53:12 -0500 (Tue, 26 Jun 2007) | 2 lines

  Use the frtbegin when compiling Fortran programs using GCC 4.
........
  r2060 | stevenknight | 2007-06-26 23:13:35 -0500 (Tue, 26 Jun 2007) | 2 lines

  Make the object that goes into the shared library a shared object file.
........
  r2061 | stevenknight | 2007-06-26 23:53:49 -0500 (Tue, 26 Jun 2007) | 4 lines

  Split test/AS/AS.py into sub-tests for the live assemblers it tests.
  Only test nasm for the known configuration of version 0.98* on a
  32-bit x86 system.
........
  r2063 | stevenknight | 2007-06-27 09:51:43 -0500 (Wed, 27 Jun 2007) | 2 lines

  Fix searching for the rmic utility.
........
  r2064 | stevenknight | 2007-06-27 10:26:42 -0500 (Wed, 27 Jun 2007) | 3 lines

  Improved worker-thread termination in a separate Job.cleanup() method.
  (Adam Simpkins)
........
  r2087 | stevenknight | 2007-07-03 12:22:10 -0500 (Tue, 03 Jul 2007) | 7 lines

  Get rid of unnecessary subclassing and complicating overriding of
  __init__() and parse_args() methods in favor of more straightforward
  initialization of the OptionParser object.

  We may need to restore subclassing in the future, but if so we'll do it
  in a more OO way.
........
  r2088 | stevenknight | 2007-07-03 16:12:30 -0500 (Tue, 03 Jul 2007) | 2 lines

  Fix a cleanup error (no self.p4d attribute) when Perforce isn't installed.
........
  r2090 | stevenknight | 2007-07-04 03:23:57 -0500 (Wed, 04 Jul 2007) | 2 lines

  Import the vanilla Python 2.5 optparse.py for use as a compatibility module.
........
  r2091 | stevenknight | 2007-07-04 03:35:17 -0500 (Wed, 04 Jul 2007) | 5 lines

  Use the new optparse compatibility module for command-line processing,
  and remove the SCons/Optik/*.py modules, with appropriate subclassing
  in Script/SConsOptions.py to preserve the way we print help text and
  SCons error messages.
........
  r2108 | stevenknight | 2007-07-08 22:57:08 -0500 (Sun, 08 Jul 2007) | 3 lines

  Make all of the optparse.add_options calls more-or-less consistent in
  how they call the keyword arguments.
........
  r2109 | stevenknight | 2007-07-09 12:31:01 -0500 (Mon, 09 Jul 2007) | 6 lines

  Consolidate command-line and {Get,Set}Option() processing and access
  in a single subclass of the optparse.Values() class.

  Allow all options, not just those that aren't SConscript-settable,
  to set their default values when calling op.add_option().
........
  r2110 | stevenknight | 2007-07-09 13:17:58 -0500 (Mon, 09 Jul 2007) | 4 lines

  Handle initialization of command-line repository options by passing the
  option arguments directly to the _SConstruct_exists() utility function,
  not by setting a global variable.
........
  r2111 | stevenknight | 2007-07-09 13:42:41 -0500 (Mon, 09 Jul 2007) | 2 lines

  Remove the unused _varargs() utility function.
........
  r2112 | stevenknight | 2007-07-09 15:21:51 -0500 (Mon, 09 Jul 2007) | 2 lines

  Clean up how we use optparse (mainly for readability).
........
  r2113 | stevenknight | 2007-07-10 15:50:08 -0500 (Tue, 10 Jul 2007) | 2 lines

  More old-Python-version compatibility changes in optparse.py.
........
  r2114 | stevenknight | 2007-07-10 16:46:42 -0500 (Tue, 10 Jul 2007) | 3 lines

  Add support for a new AddOption() function to allow the SConscript
  file(s) to define new command-line flags.
........

4 files changed, 791 insertions, 0 deletions

diff --git a/test/explain/alias-order.py b/test/explain/alias-order.py
new file mode 100644
index 0000000..78f9642
--- /dev/null
+++ b/test/explain/alias-order.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify a lot of the basic operation of the --debug=explain option.
+"""
+
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+args = '--debug=explain target2.dat'
+
+test.subdir('src')
+test.write(['src', 'SConstruct'],"""
+env = Environment()
+
+def action( source, target, env ):
+    f = open( str(target[0]), 'w' )
+    f.write( source[0].get_contents())
+    f.close()
+
+builder = env.Builder( action=action )
+
+builder( env, target = "target1.dat", source = "source1.dat" )
+alias = env.Alias( "alias", "source2.dat" )
+builder( env, target = "target2.dat", source = ["target1.dat"] )
+env.Depends( "target2.dat", alias )
+"""
+)
+
+test.write(["src", "source1.dat"], "a" )
+test.write(["src", "source2.dat"], "a" )
+
+expect = test.wrap_stdout("""\
+scons: building `target1.dat' because it doesn't exist
+action(["target1.dat"], ["source1.dat"])
+scons: building `target2.dat' because it doesn't exist
+action(["target2.dat"], ["target1.dat"])
+""")
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.write(["src", "source1.dat"], "b" )
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `target1.dat' because `source1.dat' changed
+action(["target1.dat"], ["source1.dat"])
+scons: rebuilding `target2.dat' because `target1.dat' changed
+action(["target2.dat"], ["target1.dat"])
+""")
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+
+test.pass_test()
diff --git a/test/explain/basic.py b/test/explain/basic.py
new file mode 100644
index 0000000..3366359
--- /dev/null
+++ b/test/explain/basic.py
@@ -0,0 +1,399 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify a lot of the basic operation of the --debug=explain option.
+"""
+
+import os.path
+import string
+import sys
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+test.subdir(['src'], ['src', 'subdir'])
+
+subdir_file7 = os.path.join('subdir', 'file7')
+subdir_file7_in = os.path.join('subdir', 'file7.in')
+
+cat_py = test.workpath('cat.py')
+inc_aaa = test.workpath('inc', 'aaa')
+inc_ddd = test.workpath('inc', 'ddd')
+inc_eee = test.workpath('inc', 'eee')
+inc_bbb_k = test.workpath('inc', 'bbb.k')
+
+
+
+test.write(cat_py, r"""
+import sys
+
+def process(outfp, infp):
+    for line in infp.readlines():
+        if line[:8] == 'include ':
+            file = line[8:-1]
+            try:
+                fp = open(file, 'rb')
+            except IOError:
+                import os
+                print "os.getcwd() =", os.getcwd()
+                raise
+            process(outfp, fp)
+        else:
+            outfp.write(line)
+
+outfp = open(sys.argv[1], 'wb')
+for f in sys.argv[2:]:
+    if f != '-':
+        process(outfp, open(f, 'rb'))
+
+sys.exit(0)
+""")
+
+SConstruct_contents = """\
+import re
+
+include_re = re.compile(r'^include\s+(\S+)$', re.M)
+
+def kfile_scan(node, env, target, arg):
+    contents = node.get_contents()
+    includes = include_re.findall(contents)
+    return includes
+
+kscan = Scanner(name = 'kfile',
+                function = kfile_scan,
+                argument = None,
+                skeys = ['.k'])
+
+cat = Builder(action = r'%(_python_)s %(cat_py)s $TARGET $SOURCES')
+
+env = Environment()
+env.Append(BUILDERS = {'Cat':cat},
+           SCANNERS = kscan)
+
+Export("env")
+SConscript('SConscript')
+env.Install('../inc', 'aaa')
+env.InstallAs('../inc/bbb.k', 'bbb.k')
+env.Install('../inc', 'ddd')
+env.InstallAs('../inc/eee', 'eee.in')
+""" % locals()
+
+test.write(['src', 'SConstruct'], SConstruct_contents)
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Cat('file1', 'file1.in')
+env.Cat('file2', 'file2.k')
+env.Cat('file3', ['xxx', 'yyy', 'zzz'])
+env.Command('file4', 'file4.in',
+             r'%(_python_)s %(cat_py)s $TARGET $FILE4FLAG $SOURCES',
+             FILE4FLAG='-')
+env.Cat('file5', 'file5.k')
+file6 = env.Cat('file6', 'file6.in')
+AlwaysBuild(file6)
+env.Cat('subdir/file7', 'subdir/file7.in')
+""" % locals())
+
+test.write(['src', 'aaa'], "aaa 1\n")
+test.write(['src', 'bbb.k'], """\
+bbb.k 1
+include ccc
+include ../inc/ddd
+include ../inc/eee
+""")
+test.write(['src', 'ccc'], "ccc 1\n")
+test.write(['src', 'ddd'], "ddd 1\n")
+test.write(['src', 'eee.in'], "eee.in 1\n")
+
+test.write(['src', 'file1.in'], "file1.in 1\n")
+
+test.write(['src', 'file2.k'], """\
+file2.k 1 line 1
+include xxx
+include yyy
+file2.k 1 line 4
+""")
+
+test.write(['src', 'file4.in'], "file4.in 1\n")
+
+test.write(['src', 'xxx'], "xxx 1\n")
+test.write(['src', 'yyy'], "yyy 1\n")
+test.write(['src', 'zzz'], "zzz 1\n")
+
+test.write(['src', 'file5.k'], """\
+file5.k 1 line 1
+include ../inc/aaa
+include ../inc/bbb.k
+file5.k 1 line 4
+""")
+
+test.write(['src', 'file6.in'], "file6.in 1\n")
+
+test.write(['src', 'subdir', 'file7.in'], "subdir/file7.in 1\n")
+
+
+
+args = '--debug=explain .'
+
+
+
+expect = test.wrap_stdout("""\
+scons: building `file1' because it doesn't exist
+%(_python_)s %(cat_py)s file1 file1.in
+scons: building `file2' because it doesn't exist
+%(_python_)s %(cat_py)s file2 file2.k
+scons: building `file3' because it doesn't exist
+%(_python_)s %(cat_py)s file3 xxx yyy zzz
+scons: building `file4' because it doesn't exist
+%(_python_)s %(cat_py)s file4 - file4.in
+scons: building `%(inc_aaa)s' because it doesn't exist
+Install file: "aaa" as "%(inc_aaa)s"
+scons: building `%(inc_ddd)s' because it doesn't exist
+Install file: "ddd" as "%(inc_ddd)s"
+scons: building `%(inc_eee)s' because it doesn't exist
+Install file: "eee.in" as "%(inc_eee)s"
+scons: building `%(inc_bbb_k)s' because it doesn't exist
+Install file: "bbb.k" as "%(inc_bbb_k)s"
+scons: building `file5' because it doesn't exist
+%(_python_)s %(cat_py)s file5 file5.k
+scons: building `file6' because it doesn't exist
+%(_python_)s %(cat_py)s file6 file6.in
+scons: building `%(subdir_file7)s' because it doesn't exist
+%(_python_)s %(cat_py)s %(subdir_file7)s %(subdir_file7_in)s
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file1'], "file1.in 1\n")
+test.must_match(['src', 'file2'], """\
+file2.k 1 line 1
+xxx 1
+yyy 1
+file2.k 1 line 4
+""")
+test.must_match(['src', 'file3'], "xxx 1\nyyy 1\nzzz 1\n")
+test.must_match(['src', 'file4'], "file4.in 1\n")
+test.must_match(['src', 'file5'], """\
+file5.k 1 line 1
+aaa 1
+bbb.k 1
+ccc 1
+ddd 1
+eee.in 1
+file5.k 1 line 4
+""")
+test.must_match(['src', 'file6'], "file6.in 1\n")
+
+
+
+test.write(['src', 'file1.in'], "file1.in 2\n")
+test.write(['src', 'yyy'], "yyy 2\n")
+test.write(['src', 'zzz'], "zzz 2\n")
+test.write(['src', 'bbb.k'], "bbb.k 2\ninclude ccc\n")
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file1' because `file1.in' changed
+%(_python_)s %(cat_py)s file1 file1.in
+scons: rebuilding `file2' because `yyy' changed
+%(_python_)s %(cat_py)s file2 file2.k
+scons: rebuilding `file3' because:
+           `yyy' changed
+           `zzz' changed
+%(_python_)s %(cat_py)s file3 xxx yyy zzz
+scons: rebuilding `%(inc_bbb_k)s' because:
+           `%(inc_ddd)s' is no longer a dependency
+           `%(inc_eee)s' is no longer a dependency
+           `bbb.k' changed
+Install file: "bbb.k" as "%(inc_bbb_k)s"
+scons: rebuilding `file5' because `%(inc_bbb_k)s' changed
+%(_python_)s %(cat_py)s file5 file5.k
+scons: rebuilding `file6' because AlwaysBuild() is specified
+%(_python_)s %(cat_py)s file6 file6.in
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file1'], "file1.in 2\n")
+test.must_match(['src', 'file2'], """\
+file2.k 1 line 1
+xxx 1
+yyy 2
+file2.k 1 line 4
+""")
+test.must_match(['src', 'file3'], "xxx 1\nyyy 2\nzzz 2\n")
+test.must_match(['src', 'file5'], """\
+file5.k 1 line 1
+aaa 1
+bbb.k 2
+ccc 1
+file5.k 1 line 4
+""")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Cat('file3', ['xxx', 'yyy'])
+""")
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file3' because `zzz' is no longer a dependency
+%(_python_)s %(cat_py)s file3 xxx yyy
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file3'], "xxx 1\nyyy 2\n")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Cat('file3', ['xxx', 'yyy', 'zzz'])
+""")
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file3' because `zzz' is a new dependency
+%(_python_)s %(cat_py)s file3 xxx yyy zzz
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file3'], "xxx 1\nyyy 2\nzzz 2\n")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Cat('file3', ['zzz', 'yyy', 'xxx'])
+""")
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file3' because the dependency order changed:
+               old: ['xxx', 'yyy', 'zzz']
+               new: ['zzz', 'yyy', 'xxx']
+%(_python_)s %(cat_py)s file3 zzz yyy xxx
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file3'], "zzz 2\nyyy 2\nxxx 1\n")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+f3 = File('file3')
+env.Cat(f3, ['zzz', 'yyy', 'xxx'])
+env.AddPostAction(f3, r'%(_python_)s %(cat_py)s ${TARGET}.yyy $SOURCES yyy')
+env.AddPreAction(f3, r'%(_python_)s %(cat_py)s ${TARGET}.alt $SOURCES')
+""" % locals())
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file3' because the build action changed:
+               old: %(_python_)s %(cat_py)s $TARGET $SOURCES
+               new: %(_python_)s %(cat_py)s ${TARGET}.alt $SOURCES
+                    %(_python_)s %(cat_py)s $TARGET $SOURCES
+                    %(_python_)s %(cat_py)s ${TARGET}.yyy $SOURCES yyy
+%(_python_)s %(cat_py)s file3.alt zzz yyy xxx
+%(_python_)s %(cat_py)s file3 zzz yyy xxx
+%(_python_)s %(cat_py)s file3.yyy zzz yyy xxx yyy
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file3'], "zzz 2\nyyy 2\nxxx 1\n")
+test.must_match(['src', 'file3.alt'], "zzz 2\nyyy 2\nxxx 1\n")
+test.must_match(['src', 'file3.yyy'], "zzz 2\nyyy 2\nxxx 1\nyyy 2\n")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+f3 = File('file3')
+env.Cat(f3, ['zzz', 'yyy', 'xxx'])
+env.AddPostAction(f3, r'%(_python_)s %(cat_py)s ${TARGET}.yyy $SOURCES xxx')
+env.AddPreAction(f3, r'%(_python_)s %(cat_py)s ${TARGET}.alt $SOURCES')
+""" % locals())
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file3' because the build action changed:
+               old: %(_python_)s %(cat_py)s ${TARGET}.alt $SOURCES
+                    %(_python_)s %(cat_py)s $TARGET $SOURCES
+                    %(_python_)s %(cat_py)s ${TARGET}.yyy $SOURCES yyy
+               new: %(_python_)s %(cat_py)s ${TARGET}.alt $SOURCES
+                    %(_python_)s %(cat_py)s $TARGET $SOURCES
+                    %(_python_)s %(cat_py)s ${TARGET}.yyy $SOURCES xxx
+%(_python_)s %(cat_py)s file3.alt zzz yyy xxx
+%(_python_)s %(cat_py)s file3 zzz yyy xxx
+%(_python_)s %(cat_py)s file3.yyy zzz yyy xxx xxx
+""" % locals())
+
+test.run(chdir='src', arguments=args, stdout=expect)
+
+test.must_match(['src', 'file3'], "zzz 2\nyyy 2\nxxx 1\n")
+test.must_match(['src', 'file3.alt'], "zzz 2\nyyy 2\nxxx 1\n")
+test.must_match(['src', 'file3.yyy'], "zzz 2\nyyy 2\nxxx 1\nxxx 1\n")
+
+
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Command('file4', 'file4.in',
+            r'%(_python_)s %(cat_py)s $TARGET $FILE4FLAG $SOURCES',
+            FILE4FLAG='')
+""" % locals())
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file4' because the contents of the build action changed
+               action: %(_python_)s %(cat_py)s $TARGET $FILE4FLAG $SOURCES
+%(_python_)s %(cat_py)s file4 file4.in
+""" % locals())
+
+test.run(chdir='src',arguments=args, stdout=expect)
+
+test.must_match(['src', 'file4'], "file4.in 1\n")
+
+test.up_to_date(chdir='src',arguments='.')
+
+
+
+# Test the transition when you turn ON SConsignFile().
+# This will (or might) rebuild things, but we don't care what,
+# we just want to make sure we don't blow up.
+test.write(['src', 'SConstruct'],
+           "SConsignFile()\n" + SConstruct_contents)
+
+test.run(chdir='src', arguments=args)
+
+test.up_to_date(chdir='src',arguments='.')
+
+
+
+test.pass_test()
diff --git a/test/explain/function-actions.py b/test/explain/function-actions.py
new file mode 100644
index 0000000..b28747d
--- /dev/null
+++ b/test/explain/function-actions.py
@@ -0,0 +1,100 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that --debug=explain correctly handles changes to actions
+that contain a list of function Actions.
+"""
+
+import os.path
+import string
+import sys
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+
+
+test.write('SConstruct', """\
+import shutil
+
+env = Environment()
+mode = int(ARGUMENTS.get('mode'))
+if mode:
+    def DifferentCopy(target, source, env):
+        tgt = str(target[0])
+        src = str(source[0])
+        shutil.copy(src, tgt)
+    def AltCopyStage2(target, source, env):
+        pass
+    MyCopy = Builder(action = [DifferentCopy, AltCopyStage2])
+
+    def ChangingCopy(target, source, env):
+        tgt = str(target[0])
+        src = str(source[0])
+        shutil.copy(src, tgt)
+    ChangingCopy = Builder(action = ChangingCopy)
+else:
+    MyCopy = Builder(action = Copy('$TARGET', '$SOURCE'))
+    def ChangingCopy(target, source, env):
+        tgt = str(target[0].abspath)
+        src = str(source[0].abspath)
+        shutil.copy(src, tgt)
+    ChangingCopy = Builder(action = ChangingCopy)
+
+env['BUILDERS']['MyCopy'] = MyCopy
+env['BUILDERS']['ChangingCopy'] = ChangingCopy
+
+env.MyCopy('f1.out', 'f1.in')
+env.ChangingCopy('f2.out', 'f2.in')
+""")
+
+test.write('f1.in', "f1.in\n")
+test.write('f2.in', "f2.in\n")
+
+test.run(arguments = "mode=0 .")
+
+test.must_match('f1.out', "f1.in\n")
+test.must_match('f2.out', "f2.in\n")
+
+test.run(arguments = "--debug=explain mode=1 .",
+         stdout = test.wrap_stdout("""\
+scons: rebuilding `f1.out' because the build action changed:
+               old: Copy("$TARGET", "$SOURCE")
+               new: DifferentCopy(target, source, env)
+                    AltCopyStage2(target, source, env)
+DifferentCopy(["f1.out"], ["f1.in"])
+AltCopyStage2(["f1.out"], ["f1.in"])
+scons: rebuilding `f2.out' because the contents of the build action changed
+               action: ChangingCopy(target, source, env)
+ChangingCopy(["f2.out"], ["f2.in"])
+"""))
+
+
+
+test.pass_test()
diff --git a/test/explain/save-info.py b/test/explain/save-info.py
new file mode 100644
index 0000000..0d8f5c7
--- /dev/null
+++ b/test/explain/save-info.py
@@ -0,0 +1,211 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that the --debug=explain information gets saved by default.
+"""
+
+import os.path
+import string
+import sys
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+test.subdir( 'src', ['src', 'subdir'])
+
+cat_py = test.workpath('cat.py')
+inc_bbb_k = test.workpath('inc', 'bbb.k')
+inc_ddd = test.workpath('inc', 'ddd')
+inc_eee = test.workpath('inc', 'eee')
+
+test.write(cat_py, r"""
+import sys
+
+def process(outfp, infp):
+    for line in infp.readlines():
+        if line[:8] == 'include ':
+            file = line[8:-1]
+            try:
+                fp = open(file, 'rb')
+            except IOError:
+                import os
+                print "os.getcwd() =", os.getcwd()
+                raise
+            process(outfp, fp)
+        else:
+            outfp.write(line)
+
+outfp = open(sys.argv[1], 'wb')
+for f in sys.argv[2:]:
+    if f != '-':
+        process(outfp, open(f, 'rb'))
+
+sys.exit(0)
+""")
+
+test.write(['src', 'SConstruct'], """\
+import re
+
+include_re = re.compile(r'^include\s+(\S+)$', re.M)
+
+def kfile_scan(node, env, target, arg):
+    contents = node.get_contents()
+    includes = include_re.findall(contents)
+    return includes
+
+kscan = Scanner(name = 'kfile',
+                function = kfile_scan,
+                argument = None,
+                skeys = ['.k'])
+
+cat = Builder(action = r'%(_python_)s %(cat_py)s $TARGET $SOURCES')
+
+env = Environment()
+env.Append(BUILDERS = {'Cat':cat},
+           SCANNERS = kscan)
+
+Export("env")
+SConscript('SConscript')
+env.Install('../inc', 'aaa')
+env.InstallAs('../inc/bbb.k', 'bbb.k')
+env.Install('../inc', 'ddd')
+env.InstallAs('../inc/eee', 'eee.in')
+""" % locals())
+
+test.write(['src', 'SConscript'], """\
+Import("env")
+env.Cat('file1', 'file1.in')
+env.Cat('file2', 'file2.k')
+env.Cat('file3', ['xxx', 'yyy', 'zzz'])
+env.Command('file4', 'file4.in', r'%(_python_)s %(cat_py)s $TARGET - $SOURCES')
+env.Cat('file5', 'file5.k')
+env.Cat('subdir/file6', 'subdir/file6.in')
+""" % locals())
+
+test.write(['src', 'aaa'], "aaa 1\n")
+test.write(['src', 'bbb.k'], """\
+bbb.k 1
+include ccc
+include ../inc/ddd
+include ../inc/eee
+""")
+test.write(['src', 'ccc'], "ccc 1\n")
+test.write(['src', 'ddd'], "ddd 1\n")
+test.write(['src', 'eee.in'], "eee.in 1\n")
+
+test.write(['src', 'file1.in'], "file1.in 1\n")
+
+test.write(['src', 'file2.k'], """\
+file2.k 1 line 1
+include xxx
+include yyy
+file2.k 1 line 4
+""")
+
+test.write(['src', 'file4.in'], "file4.in 1\n")
+
+test.write(['src', 'xxx'], "xxx 1\n")
+test.write(['src', 'yyy'], "yyy 1\n")
+test.write(['src', 'zzz'], "zzz 1\n")
+
+test.write(['src', 'file5.k'], """\
+file5.k 1 line 1
+include ../inc/aaa
+include ../inc/bbb.k
+file5.k 1 line 4
+""")
+
+test.write(['src', 'subdir', 'file6.in'], "subdir/file6.in 1\n")
+
+#
+test.run(chdir='src', arguments='.')
+
+test.must_match(['src', 'file1'], "file1.in 1\n")
+test.must_match(['src', 'file2'], """\
+file2.k 1 line 1
+xxx 1
+yyy 1
+file2.k 1 line 4
+""")
+test.must_match(['src', 'file3'], "xxx 1\nyyy 1\nzzz 1\n")
+test.must_match(['src', 'file4'], "file4.in 1\n")
+test.must_match(['src', 'file5'], """\
+file5.k 1 line 1
+aaa 1
+bbb.k 1
+ccc 1
+ddd 1
+eee.in 1
+file5.k 1 line 4
+""")
+
+test.write(['src', 'file1.in'], "file1.in 2\n")
+test.write(['src', 'yyy'], "yyy 2\n")
+test.write(['src', 'zzz'], "zzz 2\n")
+test.write(['src', 'bbb.k'], "bbb.k 2\ninclude ccc\n")
+
+expect = test.wrap_stdout("""\
+scons: rebuilding `file1' because `file1.in' changed
+%(_python_)s %(cat_py)s file1 file1.in
+scons: rebuilding `file2' because `yyy' changed
+%(_python_)s %(cat_py)s file2 file2.k
+scons: rebuilding `file3' because:
+           `yyy' changed
+           `zzz' changed
+%(_python_)s %(cat_py)s file3 xxx yyy zzz
+scons: rebuilding `%(inc_bbb_k)s' because:
+           `%(inc_ddd)s' is no longer a dependency
+           `%(inc_eee)s' is no longer a dependency
+           `bbb.k' changed
+Install file: "bbb.k" as "%(inc_bbb_k)s"
+scons: rebuilding `file5' because `%(inc_bbb_k)s' changed
+%(_python_)s %(cat_py)s file5 file5.k
+""" % locals())
+
+test.run(chdir='src', arguments='--debug=explain .', stdout=expect)
+
+test.must_match(['src', 'file1'], "file1.in 2\n")
+test.must_match(['src', 'file2'], """\
+file2.k 1 line 1
+xxx 1
+yyy 2
+file2.k 1 line 4
+""")
+test.must_match(['src', 'file3'], "xxx 1\nyyy 2\nzzz 2\n")
+test.must_match(['src', 'file5'], """\
+file5.k 1 line 1
+aaa 1
+bbb.k 2
+ccc 1
+file5.k 1 line 4
+""")
+
+
+
+test.pass_test()