Set CCACHE_DIR to $(TOPDIR)/.ccache and CCACHE_BASEDIR to $(TOPDIR).
This allows to do clean and dirclean. Cache hit rate for test build
after dirclean is ~65%.
If CCACHE is enabled stats are printed out at the end of building process.
CCACHE_DIR config variable allows to override default, which could be useful
when sharing cache with many builds.
cacheclean make target allows to clean the cache.
Changes from v1:
- remove ccache directory using CCACHE_DIR variable
- remove ccache leftovers from sdk and toolchain make files
- introduce CONFIG_CCACHE_DIR variable
- introduce cacheclean make target
Signed-off-by: Roman Yeryomin <roman@advem.lv>
Fixes following warnings:
In target/toolchain/files/wrapper.sh line 18:
REALNAME=$(readlink -f $0)
^-- SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 20:
REALNAME_BASE=$(basename $REALNAME)
^-------^ SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 21:
REALNAME_DIR=$(dirname $REALNAME)
^-------^ SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 74:
exec $TARGET_TOOLCHAIN_TRIPLET-$BINARY.bin $GCC_SYSROOT_FLAGS $TARGET_FUNDAMENTAL_CFLAGS $TARGET_ROOTFS_CFLAGS "$@"
^-----------------------^ SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 77:
exec $TARGET_TOOLCHAIN_TRIPLET-$BINARY.bin $LD_SYSROOT_FLAGS $TARGET_FUNDAMENTAL_LDFLAGS "$@"
^-----------------------^ SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 80:
exec $TARGET_TOOLCHAIN_TRIPLET-$BINARY.bin $TARGET_FUNDAMENTAL_ASFLAGS "$@"
^-----------------------^ SC2086: Double quote to prevent globbing and word splitting.
--
In target/toolchain/files/wrapper.sh line 83:
exec $TARGET_TOOLCHAIN_TRIPLET-$BINARY.bin "$@"
^-----------------------^ SC2086: Double quote to prevent globbing and word splitting.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
