+# Reentrant code has to be opaque; there's little advantage to making ncurses
+# opaque outside of that, so there is no --enable-opaque option.
+AC_MSG_CHECKING(if you want experimental reentrant code)
+AC_ARG_ENABLE(reentrant,
+ [ --enable-reentrant compile with experimental reentrant code],
+ [with_reentrant=$enableval],
+ [with_reentrant=no])
+AC_MSG_RESULT($with_reentrant)
+if test "$with_reentrant" = yes ; then
+ cf_cv_enable_reentrant=1
+ cf_cv_enable_opaque="NCURSES_INTERNALS"
+ NCURSES_OPAQUE=1
+ NCURSES_SIZE_T=int
+ LIB_SUFFIX="t${LIB_SUFFIX}"
+ AC_DEFINE(USE_REENTRANT)
+ CF_NCURSES_ABI_6
+else
+ cf_cv_enable_reentrant=0
+ cf_cv_enable_opaque="NCURSES_OPAQUE"
+ NCURSES_OPAQUE=0
+ NCURSES_SIZE_T=short
+fi
+AC_SUBST(cf_cv_enable_reentrant)
+AC_SUBST(cf_cv_enable_opaque)
+AC_SUBST(NCURSES_OPAQUE)
+AC_SUBST(NCURSES_SIZE_T)
+