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ccache: allow dynamic selection of cache directory

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The existing ccache infrastructure sets the cache directory hardcoded in the
ccache binary. As this directory was set to ~/.buildroot-ccache, the cache
is not necessarily local (e.g. in corporate environments the home directories
may be mounted over NFS.)
Previous versions of buildroot did allow to set the cache directory, but this
was also hardcoded (so you had to rebuild ccache to change it), plus that
support was removed.
See http://lists.busybox.net/pipermail/buildroot/2011-July/044511.html for
a discussion on this.

This patch modifies ccache to respect a new shell variable (exported from
the Makefile, based on a configuration option) instead of CCACHE_DIR.
The name CCACHE_DIR itself is already used by autotargets for the ccache
package.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Thomas De Schampheleire
2012-05-16 21:39:28 +02:00
committed by Peter Korsgaard
parent 4d1c69dd10
commit 433290761f
3 changed files with 21 additions and 13 deletions
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7
Config.in
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@@ -198,6 +198,13 @@ config BR2_CCACHE
ccache cache by removing the $HOME/.buildroot-ccache
directory.
config BR2_CCACHE_DIR
string "Compiler cache location"
depends on BR2_CCACHE
default "$(HOME)/.buildroot-ccache"
help
Where ccache should store cached files.
config BR2_DEPRECATED
bool "Show packages that are deprecated or obsolete"
help