[PATCH 0/2] Incremental image generation(rpm based rootfs)

[Robert Yang <liezhi.yang@windriver.com>]

Testing:
1) Enable INC_IMAGE_GEN = "1" in conf/local.conf
2) $ bitbake core-image-sato

   * Test when remove some pkgs
     a) Save the modify time of file which is in
        tmp/work/qemux86_64-poky-linux/core-image-sato-1.0-r0/rootfs/dev/.
     b) Edit meta/recipes-sato/images/core-image-sato.bb, remove
        ${SATO_IMAGE_FEATURES} from IMAGE_FEATURES.
     c) bitbake core-image-sato

     Result: The project built well, check the modify time of the file
     which is in
     tmp/work/qemux86_64-poky-linux/core-image-sato-1.0-r0/rootfs/dev/,
     They should be the same to step a)'s, which means that these files
     were note newly created.

   * Testh when add some pkgs
     a) Save the modify time of file which is in
        tmp/work/qemux86_64-poky-linux/core-image-sato-1.0-r0/rootfs/dev/.
     b) Edit meta/recipes-sato/images/core-image-sato.bb, add the
        ${SATO_IMAGE_FEATURES} back to IMAGE_FEATURES.
     c) bitbake core-image-sato

     Result: The project built well, check the modify time of the file
     which is in
     tmp/work/qemux86_64-poky-linux/core-image-sato-1.0-r0/rootfs/dev/,
     They should be the same to step a)'s, which means that these files
     were note newly created.

   * Test when edit a pkg
     a) bitbake bzip2 -cclean
     b) rm -f rm -f sstate-cache/sstate-bzip2-*
     c) Edit meta/recipes-extended/bzip2/bzip2_1.0.6.bb
     d) bitbake core-image-sato
     Result: The project built well, and check:
        tmp/work/qemux86-poky-linux/core-image-sato-1.0-r0/temp/log.do_rootfs
     Only the bzip2 has been re-installed

// Robert

The following changes since commit f5aa3bbda623c8fae3a761d72fddc95631ad0706:

  coreutils: ensure --color works so DEPEND on libcap (2011-12-24 10:05:47 +0000)

are available in the git repository at:
  git://git.pokylinux.org/poky-contrib robert/inc_image_gen
  http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=robert/inc_image_gen

Robert Yang (2):
  Incremental image generation(rpm based rootfs)
  Incremental image generation(Add config sample)

 meta-yocto/conf/local.conf.sample |    7 ++++
 meta/classes/image.bbclass        |   11 +++++-
 meta/classes/package_rpm.bbclass  |   72 +++++++++++++++++++++++++++++++-----
 3 files changed, 78 insertions(+), 12 deletions(-)

-- 
1.7.4.1