+AC_MSG_CHECKING([if YAZ is version 5.5.0 or later])
+AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[#include <yaz/yaz-version.h>]],
+ [[
+#if YAZ_VERSIONL < 0x50500
+#error too old
+#endif
+]])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ AC_MSG_ERROR([newer version of YAZ required])]
+)
+YAZ_DOC