No recipes available (meta-wandboard-ap) - yocto

Question

I have already built an image for wandboard using fsl-community-bsp-platform manifest and dunfell branch. I use bitbake core-image-minimal to make the build.
The idea is that I want to turn Wandboard into a wireless access point using meta-wandboard-ap. I followed all the instructions and add the layer to BBLAYERS in build/conf/bblayers.conf.
When I attempt to run the bitbake command to create the image, I get the following error message:
sami#sami-deepevent:~/fsl-community-bsp-dunfell/wandboard$ bitbake core-image-minimal
WARNING: Layer wandboard-ap should set LAYERSERIES_COMPAT_wandboard-ap in its conf/layer.conf file to list the core layer names it is compatible with.
WARNING: Layer wandboard-ap should set LAYERSERIES_COMPAT_wandboard-ap in its conf/layer.conf file to list the core layer names it is compatible with.
Loading cache: 100% |##########################################################| Time: 0:00:00
Loaded 3269 entries from dependency cache.
Parsing recipes: 100% |########################################################| Time: 0:00:00
Parsing of 2177 .bb files complete (2176 cached, 1 parsed). 3269 targets, 267 skipped, 0 masked, 0 errors.
ERROR: No recipes available for:
/home/sami/fsl-community-bsp-dunfell/sources/meta-wandboard-ap/recipes-kernel/linux-firmware/linux-firmware_git.bbappend
Summary: There were 2 WARNING messages shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
That's the content of the linux-firmware_git.bbappend file:
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SRC_URI_append = " \
file://fw_bcm4329_apsta.bin \
file://fw_bcm4330_apsta_bg.bin \
"
do_install_append () {
install -m 644 ${WORKDIR}/fw_bcm4329_apsta.bin ${D}/lib/firmware/brcm/brcmfmac4329-ap-sdio.bin
install -m 644 ${WORKDIR}/fw_bcm4330_apsta_bg.bin ${D}/lib/firmware/brcm/brcmfmac4330-ap-sdio.bin
}
FILES_${PN}-bcm4329 += " \
/lib/firmware/brcm/brcmfmac4329-ap-sdio.bin \
"
FILES_${PN}-bcm4330 += " \
/lib/firmware/brcm/brcmfmac4330-ap-sdio.bin \
"
ALTERNATIVE_TARGET_linux-firmware-bcm4329[brcmfmac4329-sdio.bin] = "${BRCM_FWDIR}/brcmfmac4329-ap-sdio.bin"
ALTERNATIVE_PRIORITY_linux-firmware-bcm4329[brcmfmac4329-sdio.bin] = "90"
ALTERNATIVE_TARGET_linux-firmware-bcm4330[brcmfmac4330-sdio.bin] = "${BRCM_FWDIR}/brcmfmac4330-ap-sdio.bin"
ALTERNATIVE_PRIORITY_linux-firmware-bcm4329[brcmfmac4330-sdio.bin] = "90"
What could be the reason for this error? How to make it find the files and recipes?

Answer 1

In Yocto, when creating a .bbappend file, the original .bb file must exist in one of the layers in bblayers.conf.
The problem is that Yocto parsing stage will try to append the content of linux-firmware_git.bbappend to linux-firmware_git.bb.
That failed, which means that you have no linux-firmware_git.bb recipe.
But the linux-firmware recipe exists in meta layer of poky. You can check in this link.
The recipe exists in dunfell under version: linux-firmware_20211027.bb
So, just change linux-firmware_git.bbappend to:
linux_firmware_%.bbappend
with that, it will match the highest version available for linux-firmware.
Also, make sure meta is present in your bblayers.conf.