我正在开发yocto，我想在我的文件系统中包含grub2-exkable，例如grub2-mkconfig。
我可以在yocto中安装grub，添加以下行。
MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "grub"
PREFERRED_VERSION_grub ?= "1.99"
当我改变时
MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "grub2" or
MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "grub_2"
我得到以下错误
ERROR: Nothing RPROVIDES 'grub2' (but /home/poky/meta/recipes-core/packagegroups/packagegroup-core-boot.bb RDEPENDS on or otherwise requires it)
NOTE: Runtime target 'grub2' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['grub2']
NOTE: Runtime target 'packagegroup-core-boot' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['packagegroup-core-boot', 'grub2']
如何包含grub2支持？