AC_FUNC_SNPRINTF
# check for asprintf function familly (or request the replacements from xbt/snprintf.c)
AC_CHECK_FUNC( asprintf, :, AC_DEFINE(NEED_ASPRINTF, 1, enable the asprintf replacement))
+AC_CHECK_FUNC( vasprintf, :, AC_DEFINE(NEED_VASPRINTF, 1, enable the vasprintf replacement))
# we don't use those:
-# A C_CHECK_FUNC( vasprintf, :, A C_DEFINE(NEED_VASPRINTF, 1, enable the vasprintf replacement))
# A C_CHECK_FUNC( asnprintf, :, A C_DEFINE(NEED_ASNPRINTF, 1, enable the asnprintf replacement))
# A C_CHECK_FUNC(vasnprintf, :, A C_DEFINE(NEED_VASNPRINTF, 1, enable the vansprintf replacement))