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Diffstat (limited to 'src/RELEASE.txt')
| -rw-r--r-- | src/RELEASE.txt | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/src/RELEASE.txt b/src/RELEASE.txt index 23c5638..ca01607 100644 --- a/src/RELEASE.txt +++ b/src/RELEASE.txt @@ -20,11 +20,39 @@ more effectively, please sign up for the scons-users mailing list at: -RELEASE 0.97.0d200709XX - XXX +RELEASE 0.97.0d20071212 - Wed, 12 Dec 2007 09:29:32 -0600 This is the eighth beta release of SCons. Please consult the CHANGES.txt file for a list of specific changes since last release. + Please note the following important changes since release 0.97.0d20070918: + + -- SCons REDEFINES PYTHON open() AND file() ON Windows TO NOT PASS + ON OPEN FILE HANDLES TO CREATED PROCESSES + + On Windows systems, SCons now redefines the Python open() + and file() functions so that, if the Python Win32 extensions + are available, the file handles for any opened files will *not* + be inherited by subprocesses, such as the spawned compilers and + other tools invoked to build the software. + + This prevents certain race conditions where a file handle for + a file opened by Python (either in a Python function action, + or directly in a SConscript file) could be inherited and help + open by a subprocess, interfering with the ability of other + processes to create or modify the file. + + In general, this should not cause problems for the vast majority + of configurations. The only time this would be a problem would be + in the unlikely event that a process spawned by SCons specifically + *expected* to use an inherited file handle opened by SCons. + + If the Python Win32 extensions are not installed or are an + earlier version that does not have the ability to disable file + handle inheritance, SCons will print a warning message when the + -j option is used. The warning message may be suppressed by + specifying --warn=no-parallel-support. + Please note the following important changes since release 0.97.0d20070809: -- "content" SIGNATURES ARE NOW THE DEFAULT BEHAVIOR @@ -433,9 +461,9 @@ RELEASE 0.97.0d200709XX - XXX You can guarantee that a list will be updated in place regardless of which SConscript file defines it and which adds to it by - using the list append() method as follows: + using the list extend() method as follows: - obj.append(env.Object('foo.c')) + obj.extend(env.Object('foo.c')) Please note the following important changes since release 0.96.1: |