+dnl Check for Ruby.
+AC_PATH_PROG(RUBY, ruby, no)
+
+AC_ARG_ENABLE(ruby,[ --disable-ruby do not build the ruby modules],
+[],[enable_ruby=yes])
+
+AC_MSG_CHECKING(if ruby modules can be built)
+
+if test "x$RUBY" = "xno" -o x$enable_ruby = xno; then
+ COMP_RUBY=
+ AC_MSG_RESULT(No .. Ruby not found or disabled)
+else
+ if $RUBY -e 'require "mkmf"' >/dev/null 2>&1; then
+ COMP_RUBY="ruby"
+ AC_MSG_RESULT(YES)
+ else
+ COMP_RUBY=
+ AC_MSG_RESULT(Ruby found but mkmf is missing! Install the -dev package)
+ fi
+fi
+
+dnl pass additional ruby options when generating Makefile from Makefile.PL
+AC_ARG_ENABLE(ruby-site-install,
+[ --enable-ruby-site-install by default the rrdtool ruby modules are installed
+ together with rrdtool in $prefix/lib/ruby. You have to
+ add $prefix/lib/ruby/$ruby_version/$sitearch to your $: variable
+ for ruby to find the RRD.so file.],
+[RUBY_MAKE_OPTIONS=],[RUBY_MAKE_OPTIONS="sitedir=$langpref/lib/ruby"])
+
+
+AC_ARG_WITH(ruby-options,
+[ --with-ruby-options=[OPTIONS] options to pass on command-line when
+ generating Makefile from extconf.rb. If you set this
+ option, interesting things may happen unless you know
+ what you are doing!],
+[RUBY_MAKE_OPTIONS=$withval])
+
+AC_SUBST(RUBY_MAKE_OPTIONS)
+AC_SUBST(RUBY)
+AC_SUBST(COMP_RUBY)
+
+dnl Check for Lua.
+AC_PATH_PROG(LUA, lua, no)
+
+AC_ARG_ENABLE(lua,[ --disable-lua do not build the lua modules],
+[],[enable_lua=yes])
+
+AC_MSG_CHECKING(if lua modules can be built)
+
+COMP_LUA=
+if test "x$LUA" = "xno" -o x$enable_lua = xno; then
+ AC_MSG_RESULT(No .. Lua not found or disabled)
+else
+ for dir in /usr/include/lua /usr/include/lua5.1 /usr/local/include/lua5.1 /usr/include/lua5.2 /usr/local/include/lua5.2 ; do
+ if test -f "$dir/lualib.h" ; then
+ enable_lua=yes
+ COMP_LUA="lua"
+ break
+ fi
+ done
+
+ if test "$COMP_LUA" = "lua" ; then
+ AC_MSG_RESULT(YES)
+ else
+ AC_MSG_RESULT(Lua found but lualib.h is missing! Install the -dev package)
+ fi
+fi
+
+dnl pass additional lua options
+# if lua-site-install is set, don't set 'LIB' and let Lua setup decide
+# the best place.
+AC_ARG_ENABLE(lua-site-install,
+[ --enable-lua-site-install by default the rrdtool lua modules are installed
+ together with rrdtool in $prefix/lib/lua. You have to
+ add $prefix/lib/lua/$lua_version/?.so to package.cpath
+ for lua to find the rrd.so file.]. When you set this
+ option the Lua module will get installed wherever
+ your Lua setup thinks it is best.],
+[LUA_MAKE_OPTIONS=],[LUA_MAKE_OPTIONS="LIB=$langpref/lib/lua"])
+
+AC_SUBST(LUA_MAKE_OPTIONS)
+AC_SUBST(LUA)
+AC_SUBST(COMP_LUA)
+
+