fontcache uses quemu usermode by default, but some architecture
such as Intel skylake does not support qemu usermode, this can
lead to a build warning as below:
"WARNING: The postinstall intercept hook 'update_font_cache' failed".

Add a judgement of qemu usermode to fix the build warning.

Signed-off-by: Jibin Xu <jibin...@windriver.com>
---
 meta/classes/fontcache.bbclass | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/meta/classes/fontcache.bbclass b/meta/classes/fontcache.bbclass
index e76331131e..3eb868fa08 100644
--- a/meta/classes/fontcache.bbclass
+++ b/meta/classes/fontcache.bbclass
@@ -17,13 +17,17 @@ FONTCONFIG_CACHE_PARAMS ?= "-v"
 FONTCONFIG_CACHE_ENV ?= "FC_DEBUG=1"
 fontcache_common() {
 if [ -n "$D" ] ; then
-       $INTERCEPT_DIR/postinst_intercept update_font_cache ${PKG} 
mlprefix=${MLPREFIX} \
-               'bindir="${bindir}"' \
-               'libdir="${libdir}"' \
-               'base_libdir="${base_libdir}"' \
-               'fontconfigcachedir="${FONTCONFIG_CACHE_DIR}"' \
-               'fontconfigcacheparams="${FONTCONFIG_CACHE_PARAMS}"' \
-               'fontconfigcacheenv="${FONTCONFIG_CACHE_ENV}"'
+       if ${@bb.utils.contains('MACHINE_FEATURES', 'qemu-usermode', 
'true','false', d)}; then
+               $INTERCEPT_DIR/postinst_intercept update_font_cache ${PKG} 
mlprefix=${MLPREFIX} \
+                       'bindir="${bindir}"' \
+                       'libdir="${libdir}"' \
+                       'base_libdir="${base_libdir}"' \
+                       'fontconfigcachedir="${FONTCONFIG_CACHE_DIR}"' \
+                       'fontconfigcacheparams="${FONTCONFIG_CACHE_PARAMS}"' \
+                       'fontconfigcacheenv="${FONTCONFIG_CACHE_ENV}"'
+       else
+               exit 1
+       fi
 else
        ${FONTCONFIG_CACHE_ENV} fc-cache ${FONTCONFIG_CACHE_PARAMS}
 fi
-- 
2.13.0

-- 
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