[RFC][PATCH 1/2] rootfs_*.bbclass: exclude BUILDNAME var dependency from do_rootfs

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

* I have kernel recipe which depends on other recipe to build tiny initramfs
  image, without this change it rebuilds not only that initramfs image
  but also whole kernel when DATE or TIME is changed and OEBasicHash enabled
* also resolves ERROR shown when bitbake -S is used for image:
  ERROR: Bitbake's cached basehash does not match the one we just generated
  (/OE/oe-core/openembedded-core/meta/recipes-core/images/core-image-minimal.bb.do_rootfs)!
  ERROR: The mismatched hashes were 8c35cdf8a5d09c03941f081dd9f6d8dc and b5d6e2e5952770557c48c5779ddb73fc

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/classes/rootfs_deb.bbclass | 1 +
 meta/classes/rootfs_ipk.bbclass | 1 +
 meta/classes/rootfs_rpm.bbclass | 1 +
 3 files changed, 3 insertions(+)

diff --git a/meta/classes/rootfs_deb.bbclass b/meta/classes/rootfs_deb.bbclass
index 881fdbd..244dc05 100644
--- a/meta/classes/rootfs_deb.bbclass
+++ b/meta/classes/rootfs_deb.bbclass
@@ -7,6 +7,7 @@ ROOTFS_PKGMANAGE_BOOTSTRAP  = "run-postinsts"
 
 do_rootfs[depends] += "dpkg-native:do_populate_sysroot apt-native:do_populate_sysroot"
 do_rootfs[recrdeptask] += "do_package_write_deb"
+do_rootfs[vardepsexclude] += "BUILDNAME"
 
 do_rootfs[lockfiles] += "${DEPLOY_DIR_DEB}/deb.lock"
 
diff --git a/meta/classes/rootfs_ipk.bbclass b/meta/classes/rootfs_ipk.bbclass
index 46e8d60..d3228b9 100644
--- a/meta/classes/rootfs_ipk.bbclass
+++ b/meta/classes/rootfs_ipk.bbclass
@@ -11,6 +11,7 @@ ROOTFS_PKGMANAGE_BOOTSTRAP  = "run-postinsts"
 
 do_rootfs[depends] += "opkg-native:do_populate_sysroot opkg-utils-native:do_populate_sysroot"
 do_rootfs[recrdeptask] += "do_package_write_ipk"
+do_rootfs[vardepsexclude] += "BUILDNAME"
 
 do_rootfs[lockfiles] += "${WORKDIR}/ipk.lock"
 
diff --git a/meta/classes/rootfs_rpm.bbclass b/meta/classes/rootfs_rpm.bbclass
index d95ccfa..c07a948 100644
--- a/meta/classes/rootfs_rpm.bbclass
+++ b/meta/classes/rootfs_rpm.bbclass
@@ -20,6 +20,7 @@ do_rootfs[depends] += "opkg-native:do_populate_sysroot"
 do_rootfs[depends] += "createrepo-native:do_populate_sysroot"
 
 do_rootfs[recrdeptask] += "do_package_write_rpm"
+do_rootfs[vardepsexclude] += "BUILDNAME"
 
 RPM_PREPROCESS_COMMANDS = "package_update_index_rpm; package_generate_rpm_conf; "
 RPM_POSTPROCESS_COMMANDS = ""
-- 
1.7.12