> Hello Jason, all, > > * [EMAIL PROTECTED] wrote on Tue, May 08, 2007 at 02:46:53PM CEST: > > > > When I use AC_CHECK_DECL, how can I prevent it from outputting to the > > console for a specific message only? I don't want to supress all > > messages, only one specific message (and replace it with my own, more > > complex reusable macro). > > Hmm. Reimplementing AC_CHECK_DECL may be easier than trying to use it, > as Noah already indicated. Especially, I think if you need to work > around the output, then it seems likely that you will also need to work > around caching as well: if you check for the same symbol more than once, > with different code snippets then it will skew your results. (Which > begs the question whether your identical double checking of timeradd in > the macro you posted was intentional.)
In the original post, the 'timeradd' twice was unintentional but the double check of localtime_r wasn't (visible with Solaris 9 and Interix 3.5), tiemradd was there to test ideas on more convenient platforms but I forgot to remove it earlier. And you're right, I had to work around caching as well, by unsetting the environment variable. > > > In the end, I've done: > > pushdef([AS_MESSAGE_FD], [/dev/null]) > > popdef([AS_MESSAGE_FD]) > > First, be encouraged to use m4_pushdef rather than pushdef, etc. > But also this ends up generating code like > echo "$message" >&/dev/null > > which is not portable: > > $ ksh -c 'echo >&/dev/null' > ksh: >&/dev/null : illegal file descriptor name Thinking about it, it'll probably be better to implement the guts of AC_DECL_CHECK here instead of using all the workarounds as Noah had already mentioned. Thanks, Jason. _______________________________________________ Autoconf mailing list [email protected] http://lists.gnu.org/mailman/listinfo/autoconf
