Provided by Thomas Dickey in private email.
2019/01/06
• updated configure macros to work around a non-POSIX feature of BSDs.
• add a dummy "check" rule to makefile for Arch packages.
• add COPYING file for Arch packages.
• use consistent wording for copyright notice in source-files.
• update config.guess, config.sub
2018/12/11
• build-fixes/updates for cygwin to accommodate configure-macro changes.
• updated configure macros:
□ CF_CC_ENV_FLAGS, add check for preprocessor-options in $CFLAGS.
□ CF_FUNC_GRANTPT, amend the posix_openpt vs grantpt change to work with
BSDs
□ CF_GNU_SOURCE, fixes a regression for Cygwin. The check for
_DEFAULT_SOURCE should apply to "recent" Cygwin (since early 2016), and
except for "NEWLIB" vs "GLIBC" in the test, acts the same if I pretend
that "newlib" is the GNU C library. Without this, the check falls
through to the _XOPEN_SOURCE test, which breaks the pseudoterminal
checks for xterm.
□ CF_LD_RPATH_OPT, suppress check if --disable-rpath is given.
□ CF_XOPEN_SOURCE, add midnightbsd to special cases with freebsd
• update config.guess, config.sub
2018/06/28
• modify configure script to avoid using OpenBSD's nonfunctional POSIX
pseudoterminal interface.
• add null-pointer checks for all strings printed in trace calls.
• updated configure macros, deprecating use of _GNU_SOURCE symbol for
DEFAULT_SOURCE, and preferring man2html over groff's html conversion.
• update config.guess, config.sub
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