linux-yocto-rt, core-image-rt*: Explicitly skip when PREFERRED_PROVIDER_virtual/kernel isn't set to linux-yocto-rt

* just like linux-yocto-dev is doing
* fixes following errors in world builds:
  ERROR: Nothing PROVIDES 'linux-yocto-rt' (but /home/jenkins/oe/world/shr-core/openembedded-core/meta/recipes-rt/images/core-image-rt-sdk.bb DEPENDS on or otherwise requires it)
  ERROR: linux-yocto-rt was skipped: PREFERRED_PROVIDER_virtual/kernel set to linux-yocto, not linux-yocto-rt
  ERROR: linux-yocto-rt was skipped: PREFERRED_PROVIDER_virtual/kernel set to linux-yocto, not linux-yocto-rt
  ERROR: Required build target 'core-image-rt-sdk' has no buildable providers.
  Missing or unbuildable dependency chain was: ['core-image-rt-sdk', 'linux-yocto-rt']

  ERROR: Nothing PROVIDES 'linux-yocto-rt' (but /home/jenkins/oe/world/shr-core/openembedded-core/meta/recipes-rt/images/core-image-rt.bb DEPENDS on or otherwise requires it)
  ERROR: linux-yocto-rt was skipped: PREFERRED_PROVIDER_virtual/kernel set to linux-yocto, not linux-yocto-rt
  ERROR: linux-yocto-rt was skipped: PREFERRED_PROVIDER_virtual/kernel set to linux-yocto, not linux-yocto-rt
  ERROR: Required build target 'core-image-rt' has no buildable providers.
  Missing or unbuildable dependency chain was: ['core-image-rt', 'linux-yocto-rt']

(From OE-Core rev: 048c901fc32a1fd9a6c4b6f68f618101dfdf94ad)

(From OE-Core rev: 6ff8b98b6f176503671c651bacecef90dd9f4d89)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 18 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-yocto-rt_4.1.bb b/meta/recipes-kernel/linux/linux-yocto-rt_4.1.bb
index e6bbee81f4..090f8f3310 100644
--- a/meta/recipes-kernel/linux/linux-yocto-rt_4.1.bb
+++ b/meta/recipes-kernel/linux/linux-yocto-rt_4.1.bb
@@ -2,6 +2,15 @@ KBRANCH ?= "standard/preempt-rt/base"
 
 require recipes-kernel/linux/linux-yocto.inc
 
+# Skip processing of this recipe if it is not explicitly specified as the
+# PREFERRED_PROVIDER for virtual/kernel. This avoids errors when trying
+# to build multiple virtual/kernel providers, e.g. as dependency of
+# core-image-rt-sdk, core-image-rt.
+python () {
+    if d.getVar("PREFERRED_PROVIDER_virtual/kernel", True) != "linux-yocto-rt":
+        raise bb.parse.SkipPackage("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
+}
+
 SRCREV_machine ?= "51cca91a1f74dab225598282019f0d694abdc4a0"
 SRCREV_meta ?= "2bdebd11f1a0bc00071ec1467289a7feb5418dde"
 
diff --git a/meta/recipes-kernel/linux/linux-yocto-rt_4.4.bb b/meta/recipes-kernel/linux/linux-yocto-rt_4.4.bb
index 92ae059d74..94dc8915a2 100644
--- a/meta/recipes-kernel/linux/linux-yocto-rt_4.4.bb
+++ b/meta/recipes-kernel/linux/linux-yocto-rt_4.4.bb
@@ -2,6 +2,15 @@ KBRANCH ?= "standard/preempt-rt/base"
 
 require recipes-kernel/linux/linux-yocto.inc
 
+# Skip processing of this recipe if it is not explicitly specified as the
+# PREFERRED_PROVIDER for virtual/kernel. This avoids errors when trying
+# to build multiple virtual/kernel providers, e.g. as dependency of
+# core-image-rt-sdk, core-image-rt.
+python () {
+    if d.getVar("PREFERRED_PROVIDER_virtual/kernel", True) != "linux-yocto-rt":
+        raise bb.parse.SkipPackage("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
+}
+
 SRCREV_machine ?= "7ef3fe56827bd9c20021e3a52bc36ebd4c6b2ce3"
 SRCREV_meta ?= "d6ee402d461048cf1afd10375fee5769c06d21d6"