A new SCons checkpoint release, 3.1.0, is now available
  on the SCons download page:

          https://scons.org/pages/download.html

  Here is a summary of the changes since 3.0.5:

  NEW FUNCTIONALITY

    - Added variable TEMPFILEARGJOIN to specify how to join arguments written
      to temp files used when command lines exceed MAXLINELENGTH when the
      command uses $TEMPFILE{...}
    - Support for MSVC 2019
    - 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.


  CHANGED/ENHANCED EXISTING FUNCTIONALITY

      - 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      Where repo_node is the repository (or other) node to use to check if the node is out of date instead of dependency.

    - 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

    - Changed: Pseudo-builders now inherit OverrideEnvironments. For
      example when calling a pseudo-builder from another
      pseudo-builder the override variables passed to the first
      pseudo-builder call had to be explicitly passed on to the
      internal pseudo-builder call. Now the second pseudo-builder call
      will automatically inherit these override values.

  FIXES
    - 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 > 1th target to not have it's 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)
    - Additional fix to issue #3135 - Also handle 'pure' and 'elemental' type bound procedures

    - Fix handling of Visual Studio Compilers to properly reject any unknown HOST_PLATFORM or TARGET_PLATFORM
    - Enable LaTeX scanner to find more than one include per line
    
      under which they would be observed), or major code cleanups

  Thanks to CURLY, LARRY, and MOE for their contributions to this release.
  Contributors are listed alphabetically by their last name.

Copyright (c) 2001 - 2019 The SCons Foundation
src/RELEASE.txt e724ae812eb96f4858a132f5b8c769724744faf6 2019-07-21 00:04:47 bdeegan