+AC_MSG_CHECKING([if YAZ is version 4.2.59 or later])
+AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[#include <yaz/yaz-version.h>]],
+ [[
+#if YAZ_VERSIONL < 0x4023B
+#error too old
+#endif
+]])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ AC_MSG_ERROR([newer version of YAZ required])]
+)
+YAZ_DOC
+
+ID_BOOST([system thread test regex],[1.33])
+if test -z "${BOOST_THREAD_LIB}"; then
+ AC_MSG_ERROR([Boost thread development libraries required])
+fi
+if test -z "${BOOST_TEST_LIB}"; then
+ AC_MSG_ERROR([Boost unit test framework libraries required])
+fi
+if test -z "${BOOST_REGEX_LIB}"; then
+ AC_MSG_ERROR([Boost regex development libraries required])
+fi