scons-3.1.0

[Douglas R. Reno]

New minor version

[Bruce Dubbs]

RELEASE 3.1.0 - Mon, 20 Jul 2019 16:59:23 -0700

• Code to supply correct version-specifier argument to vswhere for VS version selection.

• Enhanced --debug=explain output. Now the separate components of the dependency list are split up as follows:

        scons: rebuilding `file3' because:
             the dependency order changed:
             ->Sources
             Old:xxx   New:zzz
             Old:yyy   New:yyy
             Old:zzz   New:xxx
             ->Depends
             ->Implicit
             Old:/usr/bin/python   New:/usr/bin/python
  

• Fix Issue 3350 - SCons Exception EnvironmentError is conflicting with Python's EnvironmentError.
• Fix spurious rebuilds on second build for cases where builder has > 1 target and the source file is generated. This was causing the > 1st target to not have its implicit list cleared when the source file was actually built, leaving an implicit list similar to follows for 2nd and higher target

          ['/usr/bin/python', 'xxx', 'yyy', 'zzz']
  

  This was getting persisted to SConsign and on rebuild it would be corrected to be similar to this

          ['zzz', 'yyy', 'xxx', '/usr/bin/python']
  

  Which would trigger a rebuild because the order changed. The fix involved added logic to mark all shared targets as peers and then ensure they're implicit list is all cleared together.
• Fix Issue 3349 - SCons Exception EnvironmentError is conflicting with Python's EnvironmentError. Renamed to SConsEnvironmentError
• Fix Issue 3350 - mslink failing when too many objects. This is resolved by adding TEMPFILEARGJOIN variable which specifies what character to join all the argements output into the tempfile. The default remains a space when mslink, msvc, or mslib tools are loaded they change the TEMPFILEARGJOIN to be a line separator (\r\n on win32)
• Fix performance degradation for MD5-timestamp decider. NOTE: This changes the Decider() function arguments.

  From: def my_decider(dependency, target, prev_ni):
  To:   def my_decider(dependency, target, prev_ni, repo_node):
  

  Where repo_node is the repository (or other) node to use to check if the node is out of date instead of dependency.
• Additional fix to issue 3135 - Also handle 'pure' and 'elemental' type bound procedures
• Fix issue 3135 - Handle Fortran submodules and type bound procedures

• Upgraded and improved Visual Studio solution/project generation code using the MSVSProject builder.
  • Added support for Visual Studio 2017 and 2019.
  • Added support for the following per-variant parameters to the builder:
    • cpppaths: Provides per-variant include paths.
    • cppdefines: Provides per-variant preprocessor definitions.

• Fix handling of Visual Studio Compilers to properly reject any unknown HOST_PLATFORM or TARGET_PLATFORM

• Added support for Visual Studio 2019 toolset.

• Update cache debug output to include cache hit rate.
• No longer unintentionally hide exceptions in Action.py
• Allow builders and pseudo-builders to inherit from OverrideEnvironments

• Add logic to derive correct version argument to vswhere

• Enable LaTeX scanner to find more than one include per line

• scons-time takes more care closing files and uses safer mkdtemp to avoid possible races on multi-job runs.
• Use importlib to dynamically load tool and platform modules instead of imp module
• sconsign: default to .sconsign.dblite if no filename is specified. Be more informative in case of unsupported pickle protocol (py2 only).
• Fix issue 3336 - on Windows, paths were being added to PATH even if tools were not found in those paths.
• More fixes for newer Java versions (since 9): handle new jdk directory naming (jdk-X.Y instead of jdkX.Y) on Windows; handle two-digit major version. Docstrings improved.
• Fixups for pylint: exception types, redefined functions, globals, etc. Some old code removed to resolve issues (hashlib is always present on modern Pythons; no longer need the code for 2.5-and-earlier optparse). cmp is not a builtin function in Py3, drop one (unused) use; replace one. Fix another instance of renaming to SConsEnvironmentError. Trailing whitespace. Consistently use not is/in (if not x is y -> if x is not y).
• Add a PY3-only function for setting up the cachedir that should be less prone to races. Add a hack to the PY2 version (from Issue 3351) to be less prone to a race in the check for old-style cache.
• Fix coding error in docbook tool only exercised when using python lxml
• Recognize two additional GNU compiler header directory options in ParseFlags: -iquote and -idirafter.
• Fix more re patterns that contain \ but not specified as raw strings (affects scanners for D, LaTeX, swig)