+ memchr nanosleep realloc stpcpy strstr strtoul strtoull)
+])
+
+dnl FIXME: when autoconf has support for it.
+dnl This is a little helper so we can require these header checks.
+AC_DEFUN(_jm_DECL_HEADERS,
+[
+ AC_REQUIRE([AC_HEADER_STDC])
+ AC_CHECK_HEADERS(memory.h string.h strings.h stdlib.h unistd.h sys/time.h)