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docs/manual: document the effect of per-package directory on variables

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As suggested by Arnout Vandecappelle, this commit adjusts the
generic-package documentation to document the effect of per-package
directory support on HOST_DIR, STAGING_DIR and TARGET_DIR.

Suggested-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2019-11-05 17:46:45 +01:00 committed by Peter Korsgaard
parent 532574b259
commit e8c8b41dc5
1 changed files with 8 additions and 1 deletions
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docs/manual/adding-packages-generic.txt
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@ -586,6 +586,13 @@ In the action definitions, you can use the following variables:
* +$(TARGET_CROSS)+ to get the cross-compilation toolchain prefix
* Of course the +$(HOST_DIR)+, +$(STAGING_DIR)+ and +$(TARGET_DIR)+
variables to install the packages properly.
variables to install the packages properly. Those variables point to
the global _host_, _staging_ and _target_ directories, unless
_per-package directory_ support is used, in which case they point to
the current package _host_, _staging_ and _target_ directories. In
both cases, it doesn't make any difference from the package point of
view: it should simply use +HOST_DIR+, +STAGING_DIR+ and
+TARGET_DIR+. See xref:top-level-parallel-build[] for more details
about _per-package directory_ support.
Finally, you can also use hooks. See xref:hooks[] for more information.