select.mk: Tune ccache options
With these adjustments, cached object files can now be shared across
multiple Android trees on a single workstation:
* Compiler binary modification time no longer causes cache misses,
as a hash of the compiler binary is taken rather than looking
at the mtime and size
* Header file modification time no longer causes cache misses,
the headers are now always hashed
* Macros such as __DATE__ and __TIME__ no longer cause cache misses
* All paths in preprocessed source (due to use of -g) are now relative
These options require ccache 3.1 or later to be used; ccache 2.4 will
ignore these.
Change-Id: I7839637e9dacf7240bd9b7bfaa6406b1db423560
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
1 file changed
