I am in the process of creating my own distro, and trying to figure out all the different build variables. This is a pretty daunting task for a yocto project/Poky newbie.
Is there some place where the possible values for IMAGE_FSTYPE are documented? The Poky reference manual has this helpful sentence: "Formats of root filesystem images that you want to have created." However, it does not describe the possible values this variable should have. At the root of the poky source dir, doing a 'find -type f -print 0 | xargs -0 grep IMAGE_FSTYPES' seems to reveal the following used or checked-for image types: jffs2 sdimg tar.bz2 ubi ext3 ext2 cpio.gz live vmdk It appears the cpio.gz corresponds to an image suitable for an initramfs. jffs2, ext2, ext3, ubi and tar.bz2 appear self-explanatory. I have a pretty good idea thaat vmdk is somehow related to the virtual build image. What does 'live' do? Wait a sec... Reading meta/classes/image_types.bbclass I just found IMAGE_TYPES, which says it is available for requesting which values are suitable for IMAGE_FSTYPES. This has the following: IMAGE_TYPES = "jffs2 sum.jffs2 cramfs ext2 ext2.gz ext2.bz2 ext3 ext3.gz ext2.lzma btrfs live squashfs squashfs-lzma ubi tar tar.gz tar.bz2 tar.xz cpio cpio.gz cpio.xz cpio.lzma vmdk" How does one query this variable? Other than reading the source, is there a way to know that such variables (which list the allowed values for other variables) exist? I apologize if these are newbie questions. Thanks, -- Tim ============================= Tim Bird Architecture Group Chair, CE Workgroup of the Linux Foundation Senior Staff Engineer, Sony Network Entertainment ============================= _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
