Fixed when build with buildtools-tarball:

$ bitbake linux-libc-headers
  HOSTCC  arch/x86/tools/relocs_common.o
  ccache: error: Failed to create directory /run/user/0/ccache-tmp: Permission 
denied

Signed-off-by: Robert Yang <[email protected]>
---
 meta/classes/ccache.bbclass | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meta/classes/ccache.bbclass b/meta/classes/ccache.bbclass
index 11a3f1cb52e..f00fafc292a 100644
--- a/meta/classes/ccache.bbclass
+++ b/meta/classes/ccache.bbclass
@@ -35,6 +35,10 @@ export CCACHE_CONFIGPATH ?= 
"${COREBASE}/meta/conf/ccache.conf"
 
 export CCACHE_DIR ?= "${CCACHE_TOP_DIR}/${MULTIMACH_TARGET_SYS}/${PN}"
 
+# Fixed errors:
+# ccache: error: Failed to create directory /run/user/0/ccache-tmp: Permission 
denied
+export CCACHE_TEMPDIR ?= "${CCACHE_DIR}/tmp"
+
 # We need to stop ccache considering the current directory or the
 # debug-prefix-map target directory to be significant when calculating
 # its hash. Without this the cache would be invalidated every time
-- 
2.17.1

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