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yocto - Yocto：检查 MACHINE_FEATURES 的最终内容

问题描述

想知道具体内容MACHINE_FEATURES。我尝试的第一件事是：

bitbake -e <image> > bitbake.txt

检查文件我发现像这样的行：

MACHINE_EXTRA_RDEPENDS=""
#
# $MACHINE_EXTRA_RRECOMMENDS [10 operations]
#   _append /local/STM32MP15-Ecosystem-v1.1.0/Distribution-Package/openstlinux-4.19-thud-mp1-19-10-09/layers/meta-st/meta-st-stm32mp/conf/machine/include/st-machine-features-stm32mp.inc:54
#     "     ${GPU_IMAGE_INSTALL}          ${OPTEE_IMAGE_INSTALL}        ${ALSA_ADDONS_INSTALL}        ${BLUETOOTH_IMAGE_INSTALL}    "
#   set /local/STM32MP15-Ecosystem-v1.1.0/Distribution-Package/openstlinux-4.19-thud-mp1-19-10-09/layers/meta-st/meta-st-stm32mp/conf/machine/include/st-machine-common-stm32mp.inc:38
#     " kernel-modules"
#   _append /local/STM32MP15-Ecosystem-v1.1.0/Distribution-Package/openstlinux-4.19-thud-mp1-19-10-09/layers/meta-st/meta-st-stm32mp/conf/machine/include/st-machine-common-stm32mp.inc:52
#     " ${@bb.utils.contains('MACHINE_FEATURES', 'wifi', 'linux-firmware-bcm43430', '', d)} "
#   _append /local/STM32MP15-Ecosystem-v1.1.0/Distribution-Package/openstlinux-4.19-thud-mp1-19-10-09/layers/meta-st/meta-st-stm32mp/conf/machine/include/st-machine-common-stm32mp.inc:53
#     " ${@bb.utils.contains('DISTRO_FEATURES','systemd',' wifi-suspend ','',d)} "

#字符意味着他们是评论？我的意思是，该wifi功能实际上是添加到MACHINE_FEATURES?

如何打印出这样一个变量的内容？

标签： yoctobitbake

解决方案

去就好了bitbake -e <image> | grep "^MACHINE_FEATURES"。注释掉的行仅在评估发生时保留评估。对于最终结果，唯一重要的是MACHINE_FEATURES =一开始就说明的那一行。

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