[PATCHv2 4/4] kernel.bbclass: move variables for kernel artifacts names to separate bbclass

[Martin Jansa <martin.jansa@gmail.com>]

* this makes it easier to access these variables from some other bbclass
  e.g. sdcard_image-rpi.bbclass in meta-raspberry where we need to know
  how some files in deploy are named, but we cannot inherit kernel.bbclass
  as it's used in image recipe not kernel recipe
* alternatively we can move these to bitbake.conf like similar image variables are:
  meta/conf/bitbake.conf:IMAGE_BASENAME = "${PN}"
  meta/conf/bitbake.conf:IMAGE_NAME = "${IMAGE_BASENAME}-${MACHINE}-${DATETIME}"
  meta/conf/bitbake.conf:IMAGE_LINK_NAME = "${IMAGE_BASENAME}-${MACHINE}"

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/classes/kernel-artifact-names.bbclass | 19 +++++++++++++++++++
 meta/classes/kernel.bbclass                | 18 +-----------------
 2 files changed, 20 insertions(+), 17 deletions(-)
 create mode 100644 meta/classes/kernel-artifact-names.bbclass

diff --git a/meta/classes/kernel-artifact-names.bbclass b/meta/classes/kernel-artifact-names.bbclass
new file mode 100644
index 0000000000..d696888322
--- /dev/null
+++ b/meta/classes/kernel-artifact-names.bbclass
@@ -0,0 +1,19 @@
+KERNEL_IMAGE_BASE_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
+# Don't include the DATETIME variable in the sstate package signatures
+KERNEL_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
+KERNEL_IMAGE_SYMLINK_NAME ?= "${MACHINE}"
+
+KERNEL_DTB_BASE_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
+KERNEL_DTB_BASE_NAME[vardepsexclude] = "DATETIME"
+KERNEL_DTB_SYMLINK_NAME ?= "${MACHINE}"
+
+MODULE_IMAGE_BASE_NAME ?= "modules-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
+MODULE_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
+
+MODULE_TARBALL_BASE_NAME ?= "${MODULE_IMAGE_BASE_NAME}.tgz"
+MODULE_TARBALL_SYMLINK_NAME ?= "modules-${MACHINE}.tgz"
+MODULE_TARBALL_DEPLOY ?= "1"
+
+INITRAMFS_BASE_NAME ?= "initramfs-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
+INITRAMFS_BASE_NAME[vardepsexclude] = "DATETIME"
+INITRAMFS_SYMLINK_NAME ?= "initramfs-${MACHINE}"
diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index 0045cec819..42efa382ad 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -657,23 +657,7 @@ do_sizecheck[dirs] = "${B}"
 
 addtask sizecheck before do_install after do_strip
 
-KERNEL_IMAGE_BASE_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
-# Don't include the DATETIME variable in the sstate package signatures
-KERNEL_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
-KERNEL_IMAGE_SYMLINK_NAME ?= "${MACHINE}"
-KERNEL_DTB_BASE_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
-KERNEL_DTB_BASE_NAME[vardepsexclude] = "DATETIME"
-KERNEL_DTB_SYMLINK_NAME ?= "${MACHINE}"
-MODULE_IMAGE_BASE_NAME ?= "modules-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
-MODULE_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
-MODULE_TARBALL_BASE_NAME ?= "${MODULE_IMAGE_BASE_NAME}.tgz"
-# Don't include the DATETIME variable in the sstate package signatures
-MODULE_TARBALL_SYMLINK_NAME ?= "modules-${MACHINE}.tgz"
-MODULE_TARBALL_DEPLOY ?= "1"
-
-INITRAMFS_BASE_NAME ?= "initramfs-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
-INITRAMFS_BASE_NAME[vardepsexclude] = "DATETIME"
-INITRAMFS_SYMLINK_NAME ?= "initramfs-${MACHINE}"
+inherit kernel-artifact-names
 
 kernel_do_deploy() {
 	deployDir="${DEPLOYDIR}"
-- 
2.17.1