id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
5398	autoconf-2.72	Bruce Dubbs	Xi Ruoyao	"New minor version.

""There have been 171 commits by 17 people in the 151 weeks since 2.71.""

Noteworthy changes in release 2.72 (2023-12-22) [release]

Backward incompatibilities

* Configure scripts no longer support pre-1989 C compilers.
* Autoconf developers now need Perl 5.10 (2007) or later.
* Autoconf users now need GNU M4 1.4.8 (2006) or later.
* Some m4sh diversions have been renumbered.
* AC_FUNC_GETGROUPS and AC_TYPE_GETGROUPS no longer run test programs.
* All internal uses of AC_EGREP_CPP and AC_EGREP_HEADER have been removed.

New features

* Support for ensuring time_t is Y2038-safe
* AC_USE_SYSTEM_EXTENSIONS now enables C23 Annex F extensions
  by defining __STDC_WANT_IEC_60559_EXT__.
  
Obsolete features and new warnings

* Autoconf now quotes 'like this' instead of `like this'.
* AC_PROG_GCC_TRADITIONAL no longer does anything.

Notable bug fixes

* autom4te now uses fine-grained file timestamps
* AC_HEADER_STDBOOL, AC_CHECK_HEADER_STDBOOL are obsolescent and less picky.
* AC_PROG_MKDIR_P now falls back on plain 'mkdir -p'
* Better diagnostics for calling m4_warn() with a bad first argument
* Improved compatibility with a wide variety of systems and tools
  including CheriBSD, Darwin (macOS), GNU Guix, OS/2, z/OS, Bash 5.2,
  the BusyBox shell and utilities, Clang/LLVM version 16, the upcoming
  GCC version 14, etc.

Known bugs

* AC_SYS_LARGEFILE and AC_SYS_YEAR2038 only work correctly in C mode.
"	enhancement	closed	normal	12.1	Book	git	normal	fixed