Merged revisions 2880-2883,2885-2895 via svnmerge from

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

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  r2885 | stevenknight | 2008-04-18 21:38:59 -0700 (Fri, 18 Apr 2008) | 2 lines

  Update troubleshooting appendix for new Taskmaster output.
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  r2886 | bdbaddog | 2008-04-19 15:15:03 -0700 (Sat, 19 Apr 2008) | 5 lines

  Fix infinite loop in Fortran tool initialization.
  Bug 2017.
  Steven fixed, I tested.
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  r2887 | garyo | 2008-04-20 17:44:46 -0700 (Sun, 20 Apr 2008) | 1 line

  Added this in two sections; simple one when discussing simple builds, and an example in the VariantDir section showing how it still works there.
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  r2888 | stevenknight | 2008-04-20 21:33:01 -0700 (Sun, 20 Apr 2008) | 4 lines

  Accomodate test/MSVC/msvc.py's reliance on the Windows Platform SDK
  (for now) by making use of the user's %INCLUDE% and %LIB% variables.
  Split some independent embedded subtests into their own test scripts.
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  r2889 | stevenknight | 2008-04-20 21:38:05 -0700 (Sun, 20 Apr 2008) | 2 lines

  Windows portability fix (line endings).
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  r2890 | stevenknight | 2008-04-20 21:44:24 -0700 (Sun, 20 Apr 2008) | 2 lines

  Update Windows portion of if:-elif: block for a variable name change.
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  r2891 | stevenknight | 2008-04-20 21:52:41 -0700 (Sun, 20 Apr 2008) | 3 lines

  On Windows, escape backslashes on the --interactive command line input,
  so people can build targets in other directories.
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  r2892 | stevenknight | 2008-04-20 21:56:50 -0700 (Sun, 20 Apr 2008) | 3 lines

  Fix ripple effects on Windows from redefining how $CXXFLAGS gets
  added to C++ command lines.
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  r2893 | stevenknight | 2008-04-20 22:04:50 -0700 (Sun, 20 Apr 2008) | 4 lines

  Handle a ripple effect from redefining the file() and open() builtin
  functions by explicitly restoring the originals whenever we reset
  the global state between tests.
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  r2894 | stevenknight | 2008-04-20 23:17:23 -0700 (Sun, 20 Apr 2008) | 2 lines

  Remove by-hand backslash escaping, now that --interactive mode is handling it.
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  r2895 | stevenknight | 2008-04-20 23:23:04 -0700 (Sun, 20 Apr 2008) | 2 lines

  Mention the fix for the Fortran suffix out-of-memory bug
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1 files changed, 15 insertions, 1 deletions

diff --git a/src/engine/SCons/SConfTests.py b/src/engine/SCons/SConfTests.py
index 25c89d2..ba9f2f5e 100644
--- a/src/engine/SCons/SConfTests.py
+++ b/src/engine/SCons/SConfTests.py
@@ -88,7 +88,21 @@ class SConfTestCase(unittest.TestCase):
         if self.scons_env['CXX'] == 'g++':
             global existing_lib
             existing_lib = 'm'
-        
+
+        if sys.platform in ['cygwin', 'win32']:
+             # On Windows, SCons.Platform.win32 redefines the builtin
+             # file() and open() functions to close the file handles.
+             # This interferes with the unittest.py infrastructure in
+             # some way.  Just sidestep the issue by restoring the
+             # original builtin functions whenever we have to reset
+             # all of our global state.
+
+             import __builtin__
+             import SCons.Platform.win32
+
+             __builtin__.file = SCons.Platform.win32._builtin_file
+             __builtin__.open = SCons.Platform.win32._builtin_open
+
     def _baseTryXXX(self, TryFunc):
         # TryCompile and TryLink are much the same, so we can test them
         # in one method, we pass the function as a string ('TryCompile',