ccache: Set CCACHE on a per recipe basis

Set 'CCACHE_DIR' in 'bitbake.conf' and create the dirs for every
package before task 'do_configure' started.

[RP: Merge dirs variables into one]
(From OE-Core rev: fe03f78fb0bf7d54b9472832e43764e882f918a1)

Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index ff2a912a47..38367ddf02 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -386,6 +386,7 @@ export PATH
 CCACHE = "${@bb.which(bb.data.getVar('PATH', d, 1), 'ccache') and 'ccache '}"
 TOOLCHAIN_OPTIONS = " --sysroot=${STAGING_DIR_TARGET}"
 
+export CCACHE_DIR = "${TMPDIR}/ccache/${HOST_SYS}/${PN}"
 export CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
 export CXX = "${CCACHE}${HOST_PREFIX}g++ ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
 export F77 = "${CCACHE}${HOST_PREFIX}g77 ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"