NetBSD/external/bsd/ntp/dist/m4/ntp_lineeditlibs.m4

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AC_DEFUN([NTP_LINEEDITLIBS], [
NTP_ORIG_LIBS="$LIBS"
AC_ARG_WITH([lineeditlibs],
[AC_HELP_STRING([--with-lineeditlibs], [edit,editline (readline may be specified if desired)])],
[use_lineeditlibs="$withval"],
[use_lineeditlibs="edit,editline"])
AC_MSG_CHECKING([line editing libraries])
AC_MSG_RESULT([$use_lineeditlibs])
case "$use_lineeditlibs" in
no)
ntp_lib_lineedit=no
;;
*)
for lineedit_lib in `echo $use_lineeditlibs | sed -e 's/,/ /'`; do
for term_lib in "" termcap curses ncurses; do
case "$term_lib" in
'')
TRY_LIB="-l$lineedit_lib"
;;
*) TRY_LIB="-l$lineedit_lib -l$term_lib"
esac # $term_lib
LIBS="$NTP_ORIG_LIBS $TRY_LIB"
AC_MSG_CHECKING([for readline() with $TRY_LIB])
AC_TRY_LINK_FUNC([readline], [ntp_lib_lineedit="$TRY_LIB"])
case "$ntp_lib_lineedit" in
'')
AC_MSG_RESULT([no])
;;
*)
# Use readline()
AC_MSG_RESULT([yes])
break
esac # $ntp_lib_lineedit
case "$term_lib" in
'')
# do not try el_gets without a terminal library
;;
*)
AC_MSG_CHECKING([for el_gets() with $TRY_LIB])
AC_TRY_LINK_FUNC([el_gets], [ntp_lib_lineedit="$TRY_LIB"])
case "$ntp_lib_lineedit" in
'')
AC_MSG_RESULT([no])
;;
*) # Use el_gets()
AC_MSG_RESULT([yes])
break
;;
esac # $ntp_lib_lineedit
esac # $term_lib
done
case "$ntp_lib_lineedit" in
'') ;;
*) break ;;
esac
done
LIBS="$NTP_ORIG_LIBS"
;;
esac # $use_lineeditlibs
case "$ntp_lib_lineedit" in
'')
ntp_lib_lineedit="no"
;;
no)
;;
*)
EDITLINE_LIBS="$ntp_lib_lineedit"
AC_SUBST(EDITLINE_LIBS)
;;
esac # $ntp_lib_lineedit
case "$ntp_lib_lineedit" in
no)
;;
*)
dnl AC_DEFINE(HAVE_LIBREADLINE, 1,
dnl [Define if you have a readline compatible library])
AC_CHECK_HEADERS([readline.h readline/readline.h histedit.h])
AC_CHECK_HEADERS([history.h readline/history.h])
AC_MSG_CHECKING([whether readline supports history])
ntp_lib_lineedit_history="no"
ORIG_LIBS="$LIBS"
LIBS="$ORIG_LIBS $ntp_lib_lineedit"
AC_TRY_LINK_FUNC([add_history], [ntp_lib_lineedit_history="yes"])
LIBS="$ORIG_LIBS"
AC_MSG_RESULT([$ntp_lib_lineedit_history])
case "$ntp_lib_lineedit_history" in
yes)
AC_DEFINE(HAVE_READLINE_HISTORY, 1,
[Define if your readline library has \`add_history'])
esac # $ntp_lib_lineedit_history
esac # $ntp_lib_lineedit
dnl when oldest supported autoconf has AS_UNSET
dnl AS_UNSET([NTP_ORIG_LIBS TRY_LIB use_lineeditlibs])
$as_unset NTP_ORIG_LIBS TRY_LIB use_lineeditlibs
])dnl