diff options
Diffstat (limited to 'conf')
| -rw-r--r-- | conf/m4/plptools/PLP_CHECK_READLINE.m4 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/conf/m4/plptools/PLP_CHECK_READLINE.m4 b/conf/m4/plptools/PLP_CHECK_READLINE.m4 index 1b99a19..3df8b5b 100644 --- a/conf/m4/plptools/PLP_CHECK_READLINE.m4 +++ b/conf/m4/plptools/PLP_CHECK_READLINE.m4 @@ -29,13 +29,41 @@ AC_DEFUN(PLP_CHECK_READLINE, ac_cv_addcurses=true AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE) AC_MSG_RESULT([yes, and needs libcurses]) + PLP_READLINE_402 ;; 1*) ac_cv_have_libreadline=true; AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE) AC_MSG_RESULT(yes) + PLP_READLINE_402 ;; esac AM_CONDITIONAL(HAVE_LIBREADLINE, test x$ac_cv_have_libreadline = xtrue) AM_CONDITIONAL(ADD_LIBCURSES, test x$ac_cv_addcurses = xtrue) ]) + +dnl +dnl Check for readline version. +dnl Those readline developers change their API too frequently +dnl and don't provide a version number in the headers :-( +dnl +AC_DEFUN(PLP_READLINE_402, +[ + AC_MSG_CHECKING(for readline version) + saved_libs=$LIBS + if $ac_cv_addcurses ; then + LIBS="$LIBS -lreadline -lcurses" + else + LIBS="$LIBS -lreadline" + fi + rl42=false + AC_TRY_LINK(,[extern void rl_set_prompt(void); rl_set_prompt();],rl42=true) + LIBS="$saved_LIBS" + if $rl42 ; then + AC_MSG_RESULT(4.2 or greater) + AC_DEFINE_UNQUOTED(READLINE_VERSION,402) + else + AC_DEFINE_UNQUOTED(READLINE_VERSION,401) + AC_MSG_RESULT(4.1 or less) + fi +]) |