Koan: Created page with "== Override syntax change from Yocto honister 3.4 == The Yocto 3.4 release (fall 2021), also codenamed “Honister” introduces a '''disruptive change''' in the override syn..."

2022-02-18T08:53:06Z

Created page with "== Override syntax change from Yocto honister 3.4 == The Yocto 3.4 release (fall 2021), also codenamed “Honister” introduces a '''disruptive change''' in the override syn..."

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== Override syntax change from Yocto honister 3.4 ==

The Yocto 3.4 release (fall 2021), also codenamed “Honister” introduces a '''disruptive change''' in the override syntax.

In this release, the ':' character replaces the use of '_' to refer to an override, most commonly when making a conditional assignment of a variable.

This means that an entry like:

SRC_URI_qemux86 = "file://somefile"

now becomes:

SRC_URI:qemux86 = "file://somefile"

Since qemux86 is an override, this applies to any use of override syntax, so the following:

SRC_URI_append = " file://somefile"
SRC_URI_append_qemux86 = " file://somefile2"
SRC_URI_remove_qemux86-64 = " file://somefile3"
SRC_URI_prepend_qemuarm = "file://somefile4 "
FILES_${PN}-ptest = "${bindir}/xyz"
IMAGE_CMD_tar = "tar"
BASE_LIB_tune-cortexa76 = "lib"
SRCREV_pn-bash = "abc"
BB_TASK_NICE_LEVEL_task-testimage = '0'

would now become:

SRC_URI:append = " file://somefile"
SRC_URI:append:qemux86 = " file://somefile2"
SRC_URI:remove:qemux86-64 = " file://somefile3"
SRC_URI:prepend:qemuarm = "file://somefile4 "
FILES:${PN}-ptest = "${bindir}/xyz"
IMAGE_CMD:tar = "tar"
BASE_LIB:tune-cortexa76 = "lib"
SRCREV:pn-bash = "abc"
BB_TASK_NICE_LEVEL:task-testimage = '0'

This also applies to variable queries to the datastore, for example using '''getVar''' and similar so '''d.getVar("RDEPENDS_${PN}")''' becomes '''d.getVar("RDEPENDS:${PN}")'''.

Further details are available in the [https://docs.yoctoproject.org/migration-guides/migration-3.4.html#override-syntax-changes Yocto Project migration guide]

Override syntax change from Yocto honister 3.4 - Revision history

Koan: Created page with "== Override syntax change from Yocto honister 3.4 == The Yocto 3.4 release (fall 2021), also codenamed “Honister” introduces a '''disruptive change''' in the override syn..."