[meta-java][RFC][PATCH 2/7] layer.conf: allow multiple Java SDKs & runtimes to co-exist

["André Draszik" <git@andred.net>]

From: André Draszik <andre.draszik@jci.com>

Using MULTI_PROVIDER_WHITELIST, we can instruct Bitbake to not complain
if multiple recipes provide or runtime provide the same Java environment.

This is a common use-case, and Java packages don't conflict with each
other as they are typically installed under a different prefix, while still
providing (more or less) the same features.

Signed-off-by: André Draszik <andre.draszik@jci.com>
---
 conf/layer.conf | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/conf/layer.conf b/conf/layer.conf
index 3b00f61..8b2978a 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -14,3 +14,6 @@ LICENSE_PATH += "${LAYERDIR}/licenses"
 SIGGEN_EXCLUDERECIPES_ABISAFE += "\
     ca-certificates-java \
 "
+
+MULTI_PROVIDER_WHITELIST_append = " ${@' '.join('virtual/java'+str(x)+'-sdk-native virtual/java'+str(x)+'-runtime-native' for x in range(5,9))}"
+MULTI_PROVIDER_WHITELIST_append = " ${@' '.join('virtual/java'+str(x)+'-runtime' for x in range(5,9))}"
-- 
2.18.0