Hi,
currently, it is difficult to reuse recipes from other layers because
their path is required but not known. E.g. when one tries to add a
backported imx-gpu-viv recipe [1] to a local layer by
| require recipes-graphics/imx-gpu-viv/imx-gpu-viv-6.inc
do_fetch() will fail because some SRC_URI can not be resolved. To
support this, FILESEXTRAPATHS must contain the path of the original
recipe.
Determining this path is difficult at the moment, because it is unknown
and depends on the layout of BBLAYERS.
I suggest to add a new standard variable 'LAYERDIR_<layer>' which
points to '${LAYERDIR}' of the layer. It is probably difficult to set
it automatically (value of <layer> is not known); instead of, it must
be defined manually in 'layer.conf' like related variables.
E.g.
| BBFILE_COLLECTIONS += "freescale-layer"
| BBFILE_PATTERN_freescale-layer := "^${LAYERDIR}/"
|
| LAYERDIR_freescale-layer := "${LAYERDIR}" <<<<<<<<<<
Diagnostic should be easy (iterate over BBFILE_COLLECTIONS and emit
warning when corresponding 'LAYERDIR_<layer>' is undefined).
What do you think?
Enrico
Footnotes:
[1]
https://github.com/Freescale/meta-freescale/blob/master/recipes-graphics/imx-gpu-viv/imx-gpu-viv_6.4.11.p1.0-aarch64.bb
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