+dnl Allow building without Catta
+AC_ARG_ENABLE([catta], AS_HELP_STRING([--disable-catta], [disable linking with the Catta library]))
+AS_IF([test "x$enable_catta" != "xno"],
+ AC_DEFINE(HAVE_CATTA, 1, [Link with Catta])
+ AC_CONFIG_SUBDIRS([catta])
+)
+AM_CONDITIONAL(CATTA, test "x$enable_catta" != "xno")
+