[PATCH v4 09/10] nativesdk-packagegroup-sdk-host: gate qemu behind SDK_FEATURES

[Trevor Woerner <twoerner@gmail.com>]

qemu (with its helper) is added to every standalone SDK on the
architectures where it builds. It is only useful for running target
binaries on the host via qemu-usermode, which not every SDK user wants,
and it is a large thing to carry when they do not.

Move it behind the "qemu" SDK feature, which is enabled by default so an
unmodified configuration still gets qemu exactly as before on the same
architectures; the architecture guard is retained. A configuration that
does not want it removes the "qemu" feature from SDK_FEATURES.

AI-Generated: codex/claude-opus 4.8 (xhigh)
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
---
changes in v4:
- reordered after the opt-in features (wic, sbom, lldb); the default-on
  features (qemu, gdb) now come last

changes in v3:
- new in v3
---
 meta/conf/bitbake.conf                                          | 2 +-
 .../packagegroups/nativesdk-packagegroup-sdk-host.bb            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 8f590ed374f0..f96ede6d88df 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -898,7 +898,7 @@ OES_BITBAKE_CONF = "1"
 
 MACHINE_FEATURES:append = " ${@oe.utils.filter_default_features('MACHINE_FEATURES', d)}"
 SDK_MACHINE_FEATURES ?= ""
-SDK_FEATURES ?= ""
+SDK_FEATURES ?= "qemu"
 
 DISTRO_FEATURES:append = " ${@oe.utils.filter_default_features('DISTRO_FEATURES', d)}"
 
diff --git a/meta/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bb b/meta/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bb
index 9e3190af2a56..bf9de4201810 100644
--- a/meta/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bb
+++ b/meta/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bb
@@ -13,7 +13,7 @@ PACKAGEGROUP_DISABLE_COMPLEMENTARY = "1"
 # build some recent linux kernels (5.14+) for arm
 RDEPENDS:${PN} = "\
     nativesdk-pkgconfig \
-    ${@'nativesdk-qemu nativesdk-qemu-helper' if d.getVar('SDK_ARCH') in ['x86_64', 'aarch64', 'ppc64', 'ppc64le', 'riscv64', 'loongarch64', 'mips64', 's390x', 'sparc64'] else ''} \
+    ${@'nativesdk-qemu nativesdk-qemu-helper' if bb.utils.contains('SDK_FEATURES', 'qemu', True, False, d) and d.getVar('SDK_ARCH') in ['x86_64', 'aarch64', 'ppc64', 'ppc64le', 'riscv64', 'loongarch64', 'mips64', 's390x', 'sparc64'] else ''} \
     nativesdk-pseudo \
     nativesdk-unfs3 \
     nativesdk-opkg \
-- 
2.50.0.173.g8b6f19ccfc3a