add non-fatal configure check for ragel and asciidoc, thanks Nido

diff --git a/configure.ac b/configure.ac
index c98d974fd03ea4172763a35d8f196a2e389bb1aa..41789051538d5943b4ba0af63de7bc0ea99c8feb 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,9 @@ AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AC_LANG_CPLUSPLUS
 
+AC_CHECK_PROG([RAGEL], [ragel], [ragel])
+AC_CHECK_PROG([ASCIIDOC], [asciidoc], [asciidoc])
+
 dnl Check for lua
 AC_MSG_CHECKING(if with lua)
 AC_ARG_WITH(lua, AC_HELP_STRING([--with-lua],[use Lua]), [WITH_LUA=$withval],[WITH_LUA=yes])