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docs/manual/ccache-support.txt: document the new BR2_USE_CCACHE variable

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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
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Thomas Petazzoni 2022-07-27 20:48:49 +02:00 committed by Yann E. MORIN
parent a2689d901b
commit ae6e144405
1 changed files with 12 additions and 0 deletions
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docs/manual/ccache-support.txt
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@ -55,3 +55,15 @@ first.
See https://ccache.samba.org/manual.html#_compiling_in_different_directories[the
ccache manual's section on "Compiling in different directories"] for
more details about this rewriting of absolute paths.
When +ccache+ is enabled in Buildroot using the +BR2_CCACHE=y+ option:
* +ccache+ is used during the Buildroot build itself
* +ccache+ is not used when building outside of Buildroot, for example
when directly calling the cross-compiler or using the SDK
One can override this behavior using the +BR2_USE_CCACHE+ environment
variable: when set to +1+, usage of ccache is enabled (default during
the Buildroot build), when unset or set to a value different from +1+,
usage of ccache is disabled.