> Does it need to be done with shell exec redirections, or is it possible to > do it solely via m4 pushdef/popdef?
This is just what I had on my hard disk. :-) But yes, probably shell is better now that I think of it. > I agree with Ralf's comments - since AS_MESSAGE_FD is an m4sh construct, > the push/pop silence macros belong in m4sh. Which means, for convenience, > we should then provide AC_CACHE_VAL_SILENT that does the push/pop itself. More likely AC_CACHE_CHECK_SILENT. Paolo
