[OE-core] [PATCH 3/5] ccache.bbclass: Only let native recipes depend on ccache-native

[Robert Yang]

Make native recipes depend on ccache-native should be enough since native
recipes are on target/nativesdk recipes' dependency chain, this can reduce the
size of DEPENDS.

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/classes/ccache.bbclass | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/meta/classes/ccache.bbclass b/meta/classes/ccache.bbclass
index b545735..6caaca7 100644
--- a/meta/classes/ccache.bbclass
+++ b/meta/classes/ccache.bbclass
@@ -47,8 +47,11 @@ python() {
     # quilt-native doesn't need ccache since no c files
     if not (pn in ('ccache-native', 'quilt-native') or
             bb.utils.to_boolean(d.getVar('CCACHE_DISABLE'))):
-        d.appendVar('DEPENDS', ' ccache-native')
         d.setVar('CCACHE', 'ccache ')
+        # Make native recipes depend on ccache-native should be enough since
+        # native recipes are on target recipes' dependency chain.
+        if bb.data.inherits_class('native', d):
+            d.appendVar('DEPENDS', ' ccache-native')
 }
 
 addtask cleanccache after do_clean
-- 
2.7.4