+m4_divert_push([PREPARE_TESTS])dnl
+{
+ AS_ECHO(["% prove --version"])
+ prove --version </dev/null
+ echo
+} >&AS_MESSAGE_LOG_FD 2>&1
+
+# Reduce influence from the toplevel "make" invocation on test cases.
+AS_UNSET([MAKEFLAGS])
+AS_UNSET([MAKELEVEL])
+AS_UNSET([MFLAGS])
+m4_divert_pop([PREPARE_TESTS])