Fix the curses probe with older ncurses (.e.g. 5.7, as used by OpenBSD).
ncurses 5.7 requires _XOPEN_SOURCE_EXTENDED to be defined for WACS_* constants.
Signed-off-by: Brad Smith <b...@comstyle.com>
diff --git a/configure b/configure
index 0c6e7572db..9715b9c2cc 100755
--- a/configure
+++ b/configure
@@ -3186,7 +3186,7 @@ EOF
IFS=:
for curses_inc in $curses_inc_list; do
# Make sure we get the wide character prototypes
- curses_inc="-DNCURSES_WIDECHAR $curses_inc"
+ curses_inc="-DNCURSES_WIDECHAR -D_XOPEN_SOURCE_EXTENDED $curses_inc"
IFS=:
for curses_lib in $curses_lib_list; do
unset IFS
