-dnl This macro will check for the presence of the readline library.
+dnl Borut Razem
+dnl
+dnl This macro checks for the presence of the readline library.
+dnl It works also in cross-compilation environment.
+dnl
dnl To get it into the aclocal.m4 dnl file, do this:
dnl aclocal -I . --verbose
dnl
AC_DEFUN([wi_LIB_READLINE], [
dnl check for the readline.h header file
+
AC_CHECK_HEADER(readline/readline.h)
if test "$ac_cv_header_readline_readline_h" = yes; then
+ dnl check the readline version
+
+ cat > conftest.$ac_ext <<EOF
+#include <stdio.h>
+#include <readline/readline.h>
+wi_LIB_READLINE_VERSION RL_VERSION_MAJOR RL_VERSION_MINOR
+EOF
+
+ wi_READLINE_VERSION=$($CPP $CPPFLAGS conftest.$ac_ext | sed -n -e "s/^wi_LIB_READLINE_VERSION *\([[0-9\]][[0-9\]]*\) *\([[0-9\]][[0-9\]]*\)$/\1.\2/p")
+ rm -rf conftest*
+
+ if test -n "$wi_READLINE_VERSION"; then
+ wi_MAJOR=$(expr $wi_READLINE_VERSION : '\([[0-9]][[0-9]]*\)\.')
+ wi_MINOR=$(expr $wi_READLINE_VERSION : '[[0-9]][[0-9]]*\.\([[0-9]][[0-9]]*$\)')
+ if test $wi_MINOR -lt 10; then
+ wi_MINOR=$(expr $wi_MINOR \* 10)
+ fi
+ wi_READLINE_VERSION=$(expr $wi_MAJOR \* 100 + $wi_MINOR)
+ else
+ wi_READLINE_VERSION=-1
+ fi
+
dnl check for the readline library
ac_save_LIBS="$LIBS"
for LIBREADLINE in "-lreadline.dll" "-lreadline" "-lreadline $LIBCURSES" "-lreadline -ltermcap" "-lreadline -lncurses" "-lreadline -lcurses"
do
- AC_MSG_CHECKING([for GNU Readline library])
+ AC_MSG_CHECKING([for GNU Readline library $LIBREADLINE])
LIBS="$ac_save_LIBS $LIBREADLINE"
#include <readline/readline.h>
],[
/* function-body */
+ int dummy = rl_completion_append_character; /* rl_completion_append_character appeared in version 2.1 */
readline(NULL);
- rl_function_of_keyseq(NULL, NULL, NULL);
],[
wi_cv_lib_readline=yes
- wi_cv_lib_readline_result="$LIBREADLINE"
+ AC_MSG_RESULT(yes)
],[
wi_cv_lib_readline=no
- wi_cv_lib_readline_result=no
+ AC_MSG_RESULT(no)
])
if test "$wi_cv_lib_readline" = yes; then
- AC_MSG_RESULT($wi_cv_lib_readline_result)
AC_SUBST(LIBREADLINE)
- AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, 1, [Readline])
+ AC_DEFINE_UNQUOTED(HAVE_LIBREADLINE, $wi_READLINE_VERSION, [Readline])
break
fi
done