On Friday 07 November 2008 19:35, Rob Landley wrote: > Way way back in the dark ages, the original reason for naming symbols > CONFIG_APPLETNAME and CONFIG_FEATURE_APPLETNAME_BLAH was so that so that > things like "make allbareconfig" could could easily filter out features via a > sed invocation looking for "CONFIG_FEATURE". > > This was a build test, because a few times we found build breaks when a > feature was _disabled_, because we tested allyesconfig and allnoconfig but > couldn't easily test enabling each applet but switching each sub-feature > _off_.
I have a script to generate and build test random configs (in svn, scripts/randomtest). I use it to weed off broken configs before each release. > So I added "make allbareconfig" to make sure each applet feature > would at least compile with all its features disabled. That build option > seems to have gone away since 1.2, any idea why? Probably fell victim of build system rewrite. > Ignoring that constraint, it does make more sense for config features to be > named CONFIG_APPLETNAME_SUBFEATURE, and that's what I did with toybox. (I > also named global features "CONFIG_TOYBOX_SUBFEATURE"; again, easy to > spot 'em with config editing tools if you're consistent in the naming.) > > Busybox had CONFIG_DEBUG_ as a prefix when defconfig was made via sed, > because > all those needed to be filtered out. These days, you can just as easily grep > for "_DEBUG" if you want to filter out debug features that way, and the > kconfig infrastructure's been updated to accept a driedfrogpills file to > switch the debug features off that way. (It's sort of the opposite of a > miniconfig file, supplementing allyesconfig with symbols to be switched > _off_.) > > I don't really know what the plans are for the config infrastructure. (It > seems lots of the customizations we had got yanked out when it was resynced > with the upstream kernel infrastructure?) Yes. A few got restored since initial breakage. libbusybox etc. > Are things like allbareconfig still interesting? I fear this may double the bandwidth of "our XXXXconfig is wrong" discussions on the ml. :) -- vda _______________________________________________ busybox mailing list [email protected] http://busybox.net/cgi-bin/mailman/listinfo/busybox
