configure: check that the version of emacs we may have is at least 24

This also effectively drops support to Emacs version 23, which was
deprecated in version 0.23.2 (2016-11-20) and did not entirely work
any more.
This commit is contained in:
Tomi Ollila 2018-12-19 18:59:49 +02:00 committed by David Bremner
parent fac155815c
commit 5e44372373

4
configure vendored
View file

@ -623,8 +623,8 @@ if [ -z "${EMACSETCDIR-}" ]; then
EMACSETCDIR="\$(prefix)/share/emacs/site-lisp"
fi
printf "Checking if emacs is available... "
if emacs --quick --batch > /dev/null 2>&1; then
printf "Checking if emacs (>= 24) is available... "
if emacs --quick --batch --eval '(if (< emacs-major-version 24) (kill-emacs 1))' > /dev/null 2>&1; then
printf "Yes.\n"
have_emacs=1
else