-AC_CHECK_PROG(PERLDOC,[perldoc],[perldoc],[no])
-if test "x$PERLDOC" = "xno" ; then
- AC_MSG_WARN([perldoc not found - install perl to make man pages])
+AC_CHECK_OCAML_PKG([extlib])
+if test "$OCAML_PKG_extlib" = "no"; then
+ AC_MSG_ERROR([You must install OCaml library 'extlib'])
+fi
+AC_CHECK_OCAML_PKG([sexplib])
+if test "$OCAML_PKG_sexplib" = "no"; then
+ AC_MSG_ERROR([You must install OCaml library 'sexplib'])
+fi
+AC_CHECK_OCAML_PKG([lablgtk2])
+if test "$OCAML_PKG_lablgtk2" = "no"; then
+ AC_MSG_ERROR([You must install OCaml library 'lablgtk2'])