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arpa2 / mkroot

InternetWide Architecture Component Builders
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Recognise build phases (and reuse results) #2

Open vanrein opened 4 years ago

vanrein commented 4 years ago

Set more refined targets than just ${CURRENT_ROOTFS}-rootfs on which everything hangs. This will involve some ordering of the steps that constitute the rootfs build.

vanrein commented 4 years ago

Also, recognise it when a target has been built at all. It now builds again on any call, even after having succeeded just before!

vanrein commented 4 years ago

These things are caused by a few things:

  1. The ${CURRENT_ROOTFS}-rootfs target is made with add_custom_target, so it is always out of date.
  2. The use of PRE_BUILD and POST_BUILD relative to that target makes do not introduce their own targets.
  3. The actually created items are not always represented in actual files; they are often abstract targets and cannot easily be annotated with an actual target.

The solutions should take the shape of a set of targets that are coupled to files. These need not be actual files for the build, but could be a dedicated touch file.

vanrein commented 4 years ago

Most of the agony is gone, as a result of reuse of the oslibs endeavour in mkhere issue #5.