读取 MACHINEOVERRIDES 变量的最终值
Read the final value of the MACHINEOVERRIDES variable
在将我的 SoM 层从 pyro 分支移植到 dunfell 分支的过程中，我遇到了一些与我的食谱中的 COMPATIBLE_MACHINE 列表相关的问题（ BitBake 说没有与我的机器兼容的配方）。
为了进一步调查这个问题，我尝试使用 bitbake -e 命令读取 MACHINEOVERRIDES 变量的实际值。但是，我不认为这个列表是完整的，因为观察 bitbake -e 输出我可以看到还有其他变量扩展用于形成一般 OVERRIDES 变量的值。
这是我的构建环境中 bitbake -e | grep OVERRIDES 命令 运行 的输出：
# $DISTROOVERRIDES [3 operations]
DISTROOVERRIDES="fslc"
# $FILESOVERRIDES [2 operations]
# "${TRANSLATED_TARGET_ARCH}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}"
# [doc] "A subset of OVERRIDES used by the OpenEmbedded build system for creating FILESPATH."
# "${TRANSLATED_TARGET_ARCH}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}"
FILESOVERRIDES="arm:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc"
# $MACHINEOVERRIDES [14 operations]
# "PRISTINE_MACHINEOVERRIDES"
MACHINEOVERRIDES="isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul"
# $MACHINEOVERRIDES_EXTENDER_FILTER_OUT
MACHINEOVERRIDES_EXTENDER_FILTER_OUT=" imx mx6 mx6q mx6dl mx6sx mx6sl mx6sll mx6ul mx6ull mx7 mx7d mx7ulp mx8 mx8qm mx8mm mx8mn mx8mq mx8qxp "
# $MACHINEOVERRIDES_EXTENDER_FILTER_OUT_use-mainline-bsp
MACHINEOVERRIDES_EXTENDER_FILTER_OUT_use-mainline-bsp=" imx mx6 mx6q mx6dl mx6sx mx6sl mx6sll mx6ul mx6ull mx7 mx7d mx7ulp mx8 mx8qm mx8mm mx8mn mx8mq mx8qxp "
# $MACHINEOVERRIDES_EXTENDER_mx25
MACHINEOVERRIDES_EXTENDER_mx25="use-mainline-bsp"
# $MACHINEOVERRIDES_EXTENDER_mx6dl
MACHINEOVERRIDES_EXTENDER_mx6dl="imxfbdev:imxpxp:imxipu:imxvpu:imxgpu:imxgpu2d:imxgpu3d:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6q
MACHINEOVERRIDES_EXTENDER_mx6q="imxfbdev:imxipu:imxvpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx6sl
MACHINEOVERRIDES_EXTENDER_mx6sl="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6sll
MACHINEOVERRIDES_EXTENDER_mx6sll="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6sx
MACHINEOVERRIDES_EXTENDER_mx6sx="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx6ul
MACHINEOVERRIDES_EXTENDER_mx6ul="imxfbdev:imxpxp"
# $MACHINEOVERRIDES_EXTENDER_mx6ull
MACHINEOVERRIDES_EXTENDER_mx6ull="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx7d
MACHINEOVERRIDES_EXTENDER_mx7d="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx7ulp
MACHINEOVERRIDES_EXTENDER_mx7ulp="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mm
MACHINEOVERRIDES_EXTENDER_mx8mm="imxdrm:imxvpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mn
MACHINEOVERRIDES_EXTENDER_mx8mn="imxdrm:imxgpu:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mq
MACHINEOVERRIDES_EXTENDER_mx8mq="imxdrm:imxvpu:imxgpu:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8qm
MACHINEOVERRIDES_EXTENDER_mx8qm="imxdrm:imxdpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8qxp
MACHINEOVERRIDES_EXTENDER_mx8qxp="imxdrm:imxdpu:imxgpu:imxgpu2d:imxgpu3d"
# $OVERRIDES [2 operations]
# "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${CLASSOVERRIDE}${LIBCOVERRIDE}:forcevariable"
# [doc] "BitBake uses OVERRIDES to control what variables are overridden after BitBake parses recipes and configuration files."
# "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${CLASSOVERRIDE}${LIBCOVERRIDE}:forcevariable"
OVERRIDES="linux-gnueabi:arm:pn-defaultpkgname:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc:class-target:libc-glibc:forcevariable"
# $PRISTINE_MACHINEOVERRIDES [13 operations]
# rename from MACHINEOVERRIDES machine-overrides-extender.bbclass:49 [machine_overrides_extender_handler]
PRISTINE_MACHINEOVERRIDES="mx6:mx6ul:isiot:armv7ve:imx:use-mainline-bsp:isiot-geamx6ul"
# $SRC_URI_OVERRIDES_PACKAGE_ARCH
overrides = d.getVar('OVERRIDES').split(':')
msg = 'Recipe %s has PN of "%s" which is in OVERRIDES, this can result in unexpected behaviour.' % (d.getVar("FILE"), pn)
compat_machines = (d.getVar('MACHINEOVERRIDES') or "").split(":")
# unless the package sets SRC_URI_OVERRIDES_PACKAGE_ARCH=0
override = d.getVar('SRC_URI_OVERRIDES_PACKAGE_ARCH')
overrides = (":" + (d.getVar("FILESOVERRIDES") or "")).split(":")
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + multilib
localdata.setVar("OVERRIDES", overrides)
overrides = d.getVar("OVERRIDES").split(":")
machine_overrides = (d.getVar('PRISTINE_MACHINEOVERRIDES') or '').split(':')
machine_overrides_filter_out += (d.getVar('MACHINEOVERRIDES_EXTENDER_FILTER_OUT_%s' % override) or '').split()
extender = d.getVar('MACHINEOVERRIDES_EXTENDER_%s' % override)
# so we can reprocess OVERRIDES if/as/when needed.
d.renameVar("MACHINEOVERRIDES", "PRISTINE_MACHINEOVERRIDES")
d.setVar("MACHINEOVERRIDES", "${@machine_overrides_extender(d)}")
localdata.setVar('OVERRIDES', pkg)
localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES') + ':' + pkg)
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + item
localdata.setVar("OVERRIDES", overrides)
localdata.setVar('OVERRIDES', d.getVar("OVERRIDES", False) + ":" + pkg)
有没有办法在这些操作发生后获取 MACHINEOVERRIDES 和 OVERRIDES 变量的值？
# so we can reprocess OVERRIDES if/as/when needed.
d.renameVar("MACHINEOVERRIDES", "PRISTINE_MACHINEOVERRIDES")
d.setVar("MACHINEOVERRIDES", "${@machine_overrides_extender(d)}")
localdata.setVar('OVERRIDES', pkg)
localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES') + ':' + pkg)
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + item
localdata.setVar("OVERRIDES", overrides)
localdata.setVar('OVERRIDES', d.getVar("OVERRIDES", False) + ":" + pkg)
谢谢。
bitbake -e 已经显示了操作后的变量。
MACHINEOVERRIDES="isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul" 和
OVERRIDES="linux-gnueabi:arm:pn-defaultpkgname:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc:class-target:libc-glibc:forcevariable"
bitbake -e 首先向您显示有多少操作作用于一个变量，例如# $MACHINEOVERRIDES [14 operations] 以及它们来自哪里以及之后的扩展值。
您可以使用 bitbake -e | less 浏览输出而不是 grep。
您可以简单地使用：
bitbake -e <package_name> | grep ^MACHINEOVERRIDES=
bitbake -e <package_name> | grep ^OVERRIDES=
在将我的 SoM 层从 pyro 分支移植到 dunfell 分支的过程中，我遇到了一些与我的食谱中的 COMPATIBLE_MACHINE 列表相关的问题（ BitBake 说没有与我的机器兼容的配方）。
为了进一步调查这个问题，我尝试使用 bitbake -e 命令读取 MACHINEOVERRIDES 变量的实际值。但是，我不认为这个列表是完整的，因为观察 bitbake -e 输出我可以看到还有其他变量扩展用于形成一般 OVERRIDES 变量的值。
这是我的构建环境中 bitbake -e | grep OVERRIDES 命令 运行 的输出：
# $DISTROOVERRIDES [3 operations]
DISTROOVERRIDES="fslc"
# $FILESOVERRIDES [2 operations]
# "${TRANSLATED_TARGET_ARCH}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}"
# [doc] "A subset of OVERRIDES used by the OpenEmbedded build system for creating FILESPATH."
# "${TRANSLATED_TARGET_ARCH}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}"
FILESOVERRIDES="arm:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc"
# $MACHINEOVERRIDES [14 operations]
# "PRISTINE_MACHINEOVERRIDES"
MACHINEOVERRIDES="isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul"
# $MACHINEOVERRIDES_EXTENDER_FILTER_OUT
MACHINEOVERRIDES_EXTENDER_FILTER_OUT=" imx mx6 mx6q mx6dl mx6sx mx6sl mx6sll mx6ul mx6ull mx7 mx7d mx7ulp mx8 mx8qm mx8mm mx8mn mx8mq mx8qxp "
# $MACHINEOVERRIDES_EXTENDER_FILTER_OUT_use-mainline-bsp
MACHINEOVERRIDES_EXTENDER_FILTER_OUT_use-mainline-bsp=" imx mx6 mx6q mx6dl mx6sx mx6sl mx6sll mx6ul mx6ull mx7 mx7d mx7ulp mx8 mx8qm mx8mm mx8mn mx8mq mx8qxp "
# $MACHINEOVERRIDES_EXTENDER_mx25
MACHINEOVERRIDES_EXTENDER_mx25="use-mainline-bsp"
# $MACHINEOVERRIDES_EXTENDER_mx6dl
MACHINEOVERRIDES_EXTENDER_mx6dl="imxfbdev:imxpxp:imxipu:imxvpu:imxgpu:imxgpu2d:imxgpu3d:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6q
MACHINEOVERRIDES_EXTENDER_mx6q="imxfbdev:imxipu:imxvpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx6sl
MACHINEOVERRIDES_EXTENDER_mx6sl="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6sll
MACHINEOVERRIDES_EXTENDER_mx6sll="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx6sx
MACHINEOVERRIDES_EXTENDER_mx6sx="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx6ul
MACHINEOVERRIDES_EXTENDER_mx6ul="imxfbdev:imxpxp"
# $MACHINEOVERRIDES_EXTENDER_mx6ull
MACHINEOVERRIDES_EXTENDER_mx6ull="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx7d
MACHINEOVERRIDES_EXTENDER_mx7d="imxfbdev:imxpxp:imxepdc"
# $MACHINEOVERRIDES_EXTENDER_mx7ulp
MACHINEOVERRIDES_EXTENDER_mx7ulp="imxfbdev:imxpxp:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mm
MACHINEOVERRIDES_EXTENDER_mx8mm="imxdrm:imxvpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mn
MACHINEOVERRIDES_EXTENDER_mx8mn="imxdrm:imxgpu:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8mq
MACHINEOVERRIDES_EXTENDER_mx8mq="imxdrm:imxvpu:imxgpu:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8qm
MACHINEOVERRIDES_EXTENDER_mx8qm="imxdrm:imxdpu:imxgpu:imxgpu2d:imxgpu3d"
# $MACHINEOVERRIDES_EXTENDER_mx8qxp
MACHINEOVERRIDES_EXTENDER_mx8qxp="imxdrm:imxdpu:imxgpu:imxgpu2d:imxgpu3d"
# $OVERRIDES [2 operations]
# "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${CLASSOVERRIDE}${LIBCOVERRIDE}:forcevariable"
# [doc] "BitBake uses OVERRIDES to control what variables are overridden after BitBake parses recipes and configuration files."
# "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${CLASSOVERRIDE}${LIBCOVERRIDE}:forcevariable"
OVERRIDES="linux-gnueabi:arm:pn-defaultpkgname:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc:class-target:libc-glibc:forcevariable"
# $PRISTINE_MACHINEOVERRIDES [13 operations]
# rename from MACHINEOVERRIDES machine-overrides-extender.bbclass:49 [machine_overrides_extender_handler]
PRISTINE_MACHINEOVERRIDES="mx6:mx6ul:isiot:armv7ve:imx:use-mainline-bsp:isiot-geamx6ul"
# $SRC_URI_OVERRIDES_PACKAGE_ARCH
overrides = d.getVar('OVERRIDES').split(':')
msg = 'Recipe %s has PN of "%s" which is in OVERRIDES, this can result in unexpected behaviour.' % (d.getVar("FILE"), pn)
compat_machines = (d.getVar('MACHINEOVERRIDES') or "").split(":")
# unless the package sets SRC_URI_OVERRIDES_PACKAGE_ARCH=0
override = d.getVar('SRC_URI_OVERRIDES_PACKAGE_ARCH')
overrides = (":" + (d.getVar("FILESOVERRIDES") or "")).split(":")
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + multilib
localdata.setVar("OVERRIDES", overrides)
overrides = d.getVar("OVERRIDES").split(":")
machine_overrides = (d.getVar('PRISTINE_MACHINEOVERRIDES') or '').split(':')
machine_overrides_filter_out += (d.getVar('MACHINEOVERRIDES_EXTENDER_FILTER_OUT_%s' % override) or '').split()
extender = d.getVar('MACHINEOVERRIDES_EXTENDER_%s' % override)
# so we can reprocess OVERRIDES if/as/when needed.
d.renameVar("MACHINEOVERRIDES", "PRISTINE_MACHINEOVERRIDES")
d.setVar("MACHINEOVERRIDES", "${@machine_overrides_extender(d)}")
localdata.setVar('OVERRIDES', pkg)
localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES') + ':' + pkg)
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + item
localdata.setVar("OVERRIDES", overrides)
localdata.setVar('OVERRIDES', d.getVar("OVERRIDES", False) + ":" + pkg)
有没有办法在这些操作发生后获取 MACHINEOVERRIDES 和 OVERRIDES 变量的值？
# so we can reprocess OVERRIDES if/as/when needed.
d.renameVar("MACHINEOVERRIDES", "PRISTINE_MACHINEOVERRIDES")
d.setVar("MACHINEOVERRIDES", "${@machine_overrides_extender(d)}")
localdata.setVar('OVERRIDES', pkg)
localdata.setVar('OVERRIDES', localdata.getVar('OVERRIDES') + ':' + pkg)
overrides = localdata.getVar("OVERRIDES", False) + ":virtclass-multilib-" + item
localdata.setVar("OVERRIDES", overrides)
localdata.setVar('OVERRIDES', d.getVar("OVERRIDES", False) + ":" + pkg)
谢谢。
bitbake -e 已经显示了操作后的变量。
MACHINEOVERRIDES="isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul" 和
OVERRIDES="linux-gnueabi:arm:pn-defaultpkgname:isiot:armv7ve:use-mainline-bsp:isiot-geamx6ul:fslc:class-target:libc-glibc:forcevariable"
bitbake -e 首先向您显示有多少操作作用于一个变量，例如# $MACHINEOVERRIDES [14 operations] 以及它们来自哪里以及之后的扩展值。
您可以使用 bitbake -e | less 浏览输出而不是 grep。
您可以简单地使用：
bitbake -e <package_name> | grep ^MACHINEOVERRIDES=
bitbake -e <package_name> | grep ^OVERRIDES=