Avoid parse time errors due to dependency on x11, for distros without x11

BitBake raises some errors when processing recipes that depend on x11
for distros that don't have x11 in DISTRO_FEATURES. To work around
that issue, REQUIRED_DISTRO_FEATURES = "x11" (from
distro_features_check.bbclass) has been set for the following recipes:

* cacao (_class-target)
* classpath (_class-target)
* jamvm (_class-target)
* openjdk-7-release

That makes BitBake skip those recipes during the cache generation
(they'd still be parsed, but ignored).

This patch improves the idea from Mario Domenech Goulart <mario@ossystems.com.br>

Signed-off-by: Jens Rehsack <sno@netbsd.org>
Acked-by: Richard Leitner <richard.leitner@skidata.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 1 insertions, 0 deletions

diff --git a/recipes-core/cacao/cacao_1.6.1.bb b/recipes-core/cacao/cacao_1.6.1.bb
index 564dd1e..f88293b 100644
--- a/recipes-core/cacao/cacao_1.6.1.bb
+++ b/recipes-core/cacao/cacao_1.6.1.bb
@@ -18,6 +18,7 @@ SRC_URI[sha256sum] = "eecc8bd1b528a028f43d9d1d0c06b97855bbf1d40e03826d911ebbc0b6
 inherit java autotools-brokensep update-alternatives pkgconfig distro_features_check
 
 REQUIRED_DISTRO_FEATURES = "x11"
+REQUIRED_DISTRO_FEATURES_class-native := ""
 
 EXTRA_OECONF_class-native = "\
     --enable-debug \