dnl these tests have been comfirmed to be needed in 2011
AC_CHECK_FUNCS(backtrace_symbols dirfd getusershell pread pwrite pselect)
-AC_CHECK_FUNCS(setlinebuf strlcat strlcpy strnlen mempcpy vasprintf)
+AC_CHECK_FUNCS(setlinebuf strlcat strlcpy strnlen mempcpy vasprintf asprintf)
AC_CHECK_FUNCS(mmap utime getpagesize) dnl needed by tbd
dnl search for necessary libraries