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deprecated handling: introduce BR2_DEPRECATED_SINCE_xxxx_xx

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In order to keep better track of when a feature got deprecated, and hence
when it can be removed, a new set of symbols BR2_DEPRECATED_SINCE_xxxx_xx is
introduced. These symbols are automatically selected when BR2_DEPRECATED is
selected, and thus are transparent to the user.
A deprecated feature will no longer depend on BR2_DEPRECATED directly, but
rather on the appropriate BR2_DEPRECATED_SINCE_xxxx_xx. If that symbol does
not yet exist, it has to be created in Config.in.
When removing a deprecated feature, one should also check whether this was
the last feature using the BR2_DEPRECATED_SINCE_xxxx_xx symbol, in which
case the latter can be removed from Config.in.

A followup patch will make sure the overview is added to the list of
deprecated features in the manual, so that a buildroot core developer can
easily determine which features to remove in a given development cycle.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas De Schampheleire
2014-01-03 17:02:50 +01:00
committed by Peter Korsgaard
parent b4a28e6c5c
commit ba4ad9d27c
21 changed files with 85 additions and 38 deletions
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2
fs/squashfs/Config.in
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@@ -15,7 +15,7 @@ config BR2_TARGET_ROOTFS_SQUASHFS4
bool "4.x"
config BR2_TARGET_ROOTFS_SQUASHFS3
depends on BR2_DEPRECATED
depends on BR2_DEPRECATED_SINCE_2010_05
bool "3.x"
endchoice