[PATCH 0/7] Add --enable-newlib-backward-binary-compat configure option

This patch set adds the --enable-newlib-backward-binary-compat configure option
which may be used to define the new Newlib configuration option
_NEWLIB_BACKWARD_BINARY_COMPAT.  This option can be used to provided binary
backward compatibility, for example by preserving unused members in struct
_reent to keep the structure layout.  Make _REENT_GLOBAL_ATEXIT the default and
remove this option.

Sebastian Huber (7):
  Add --enable-newlib-backward-binary-compat
  Cygwin: Enable backward binary compatibility
  Optional struct _reent::__unused_sdidinit
  Optional struct _reent::_unspecified_locale_info
  Optional struct _reent::_new::_unused
  Optional struct _reent::_new::_reent::_unused_rand
  Use global atexit data for all configurations

 newlib/README                         | 11 +++--
 newlib/configure                      | 28 +++++++++---
 newlib/configure.ac                   | 23 +++++++---
 newlib/libc/include/sys/config.h      |  7 ++-
 newlib/libc/include/sys/reent.h       | 64 ++++++++++++++++-----------
 newlib/libc/reent/reent.c             | 19 --------
 newlib/libc/stdlib/__atexit.c         | 15 +++----
 newlib/libc/stdlib/__call_atexit.c    |  8 ++--
 newlib/newlib.hin                     |  6 +--
 winsup/cygwin/include/cygwin/config.h |  1 +
 10 files changed, 98 insertions(+), 84 deletions(-)

-- 
2.35.3