On Tuesday 19 June 2012 08:22:00 Robert P. J. Day wrote: > currently, the dev manual (Section 4.2.1) proposes the use of > > IMAGE_INSTALL += "strace" > > but the poky ref manual in the variable glossary explicitly > discourages that form, and instead recommends > > IMAGE_INSTALL_append = " package-name" > > can we agree that the "_append" form is preferred? thoughts?
The reference manual is a little unclear on what "ordering issues" means. += works just fine, it's just that if you happen to use it at some point before core-image.bbclass line sets it with ?= (i.e. either in local.conf or before the "inherit core-image" line in your image recipe) the ?= line in core- image.bbclass will do nothing and you'll end up with much less in the IMAGE_INSTALL list than you expected. If you use _append, you can have that anywhere you like and it will always work, with the caveat that if you forget to add a leading space in the value to be appended, things will break. Note that the part of 4.2.1 in the dev manual you refer to is specifically talking about making a copy of an image recipe and putting the IMAGE_INSTALL += at the end, which will always work and won't suffer from any leading space issues. I'm not sure what we should change to improve this... Cheers, Paul -- Paul Eggleton Intel Open Source Technology Centre _______________________________________________ yocto mailing list [email protected] https://lists.yoctoproject.org/listinfo/yocto
