diff options
Diffstat (limited to 'm4/ax_lib_readline.m4')
| -rw-r--r-- | m4/ax_lib_readline.m4 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/m4/ax_lib_readline.m4 b/m4/ax_lib_readline.m4 index 72764fba..fe56c5bf 100644 --- a/m4/ax_lib_readline.m4 +++ b/m4/ax_lib_readline.m4 @@ -90,8 +90,11 @@ AC_DEFUN([AX_LIB_READLINE], [ AC_MSG_ERROR([readline library with terminfo support is required (one of ncurses, curses, or termcap)]) fi + ORIG_LIBS="$LIBS" LIBS="$LIBS $ax_cv_lib_readline" AC_CHECK_HEADERS(readline.h readline/readline.h) + + # Check history AC_CACHE_CHECK([whether readline supports history], ax_cv_lib_readline_history, [ ax_cv_lib_readline_history="no" @@ -101,6 +104,18 @@ AC_DEFUN([AX_LIB_READLINE], [ AC_MSG_ERROR(readline history support is required) fi AC_CHECK_HEADERS(history.h readline/history.h) + + # check rl_echo_signal_char() + AC_CACHE_CHECK([whether readline supports rl_echo_signal_char()], + ax_cv_lib_readline_echo_signal_char, [ + ax_cv_lib_readline_echo_signal_char="no" + AC_TRY_LINK_FUNC(rl_echo_signal_char, ax_cv_lib_readline_echo_signal_char="yes") + ]) + if test "$ax_cv_lib_readline_echo_signal_char" != "yes"; then + AC_MSG_ERROR(rl_echo_signal_char() is required (install readline6?)) + fi + + LIBS="$ORIG_LIBS" READLINE_LIBS="$ax_cv_lib_readline" AC_SUBST(READLINE_LIBS) ])dnl |