>> Use something like >> AC_ARG_ENABLE([webcam], >> [AS_HELP_STRING([--disable-webcam], [disable use of webcam])], >> [AC_DEFINE([USE_WEBCAM], [1], [enable/disable webcam broadcaster])]) >> > Many thanks for your help. > > This is almost there, but working in reverse to my expectations, > ./configure --disable-webcam > enables inclusion and That would be because the above logic doesn't check the value of $enableval; it simply *unconditionally* AC_DEFINEs USE_WEBCAM, as soon as the user specifies *either* an `--enable-webcam' *or* a `--disable-webcam' option, (which is equivalent to specifying `--enable-webcam=no', and therefore sets $enableval to `no'), while... > ./configure > DISABLES it has no default action specified, if *neither* option is given, so the AC_DEFINE effect is never invoked. Regards, Keith. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
