vcontainer-tarball: build all architectures via single bitbake command

Previously, building vcontainer-tarball required multiple bitbake
invocations or complex command lines to build both x86_64 and aarch64
blobs. This was a usability issue.

Changes:
- mcdepends now triggers builds for BOTH architectures automatically
- VCONTAINER_ARCHITECTURES defaults to "x86_64 aarch64" (was auto-detect)
- Add informational banner at parse time showing what will be built
- Fix duplicate sanity check messages when multiconfig is active

Usage is now simply:
  bitbake vcontainer-tarball

To build only one architecture, set in local.conf:
  VCONTAINER_ARCHITECTURES = "x86_64"

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/classes/sanity-meta-virt.bbclass b/classes/sanity-meta-virt.bbclass
index 3327a8ac..718b6620 100644
--- a/classes/sanity-meta-virt.bbclass
+++ b/classes/sanity-meta-virt.bbclass
@@ -13,6 +13,11 @@ virtualization support.")
 addhandler vcontainer_sanity_check
 vcontainer_sanity_check[eventmask] = "bb.event.SanityCheck"
 python vcontainer_sanity_check() {
+    # Only run for main multiconfig (avoid duplicate messages)
+    mc = e.data.getVar('BB_CURRENT_MC') or ''
+    if mc != '':
+        return
+
     skip_check = e.data.getVar('SKIP_META_VIRT_SANITY_CHECK') == "1"
     if skip_check:
         return