Release Notes: Python support has been updated. Version requirements have been tightened. Several deprecated and obsoleted features have been removed, while new deprecations and future obsoletions have been introduced. Several minor bugs have been fixed.
Release Notes: Many obsoletions were introduced or finalized. Support for 'perllibdir', which was a hack, was removed. Some test suite weaknesses and spurious failures were fixed.
Release Notes: A large number of warnings and deprecations were introduced. Support was added for Objective C++ and for silent rules. Recursive cleaning rules now use the natural subdirectory order. Support for older non-POSIX Bourne shells was dropped. Several other modifications and enhancements were made. Many minor bugs were fixed.
Release Notes: Several obsolete features have been removed. A new "cscope" target has been added to aid in building a cscope database for the source tree. Several changes have been made to Automake-generated testsuite harnesses. Various other improvements and minor bugfixes have been made.
Release Notes: Various bugs were fixed. Some functions and behaviors were deprecated.