tegra-uefi-capsules fails to find flash.idx

[PercevalSA]

Describe the bug
The index file /media/yocto/build/weedos-glibc/work/jetson_orin_nx_syslogic-oe4t-linux/tegra-uefi-capsules/36.4.4/tegra-uefi-capsules-36.4.4/bup-payload/signed/flash.idx is not found.

I'm trying to build a distro with a custom machine

To Reproduce
Steps to reproduce the behavior:

1. Build meta-tegra branch 'scarthgap' with MACHINE based on 'orin-nx'

Additional context
Here is the machine configuration

#@TYPE: Machine
#@NAME: Nvidia Jetson Orin NX 16GB (P3767-0000/0001)
#@DESCRIPTION: Nvidia Jetson Orin NX module in Syslogic BRLA4N carrier

# Use the base Orin NX configuration
require conf/machine/include/orin-nx.inc
require conf/machine/include/devkit-wifi.inc

# Syslogic specific device tree for Orin NX variant with super mode
KERNEL_DEVICETREE ?= "tegra234-brla4n-11x-orin-nx-super.dtb"

# Syslogic BRLA4N carrier board specific configurations
# Override pinmux and GPIO configurations with Syslogic custom files
TEGRA_FLASHVAR_PINMUX_CONFIG = "tegra234-mb1-bct-pinmux-brla4n-orin-nx.dtsi"
TEGRA_FLASHVAR_GPIOINT_CONFIG = "tegra234-mb1-bct-gpio-brla4n-orin-nx.dtsi"

# Use NVIDIA standard padvoltage (not custom for Syslogic)
# TEGRA_FLASHVAR_PMC_CONFIG defaults to "tegra234-mb1-bct-padvoltage-p3767-dp-a03.dtsi"
# Syslogic uses p3767-dp-a01.dtsi for TS1/EB1 FAB revisions (handled automatically)

# Storage configuration - Orin NX uses NVMe, not eMMC
USE_REDUNDANT_FLASH_LAYOUT_DEFAULT = "1"
# For Mender: Define storage device for NVMe: using a 240GB M2 SSD and not EMMC
MENDER_STORAGE_DEVICE = "/dev/nvme0n1"
# equivalent: EMMC_SIZE = "32 * 1024 * 1024 * 1024"
EMMC_SIZE = "34359738368"
# id defined in custom partition layout
# MENDER_DATA_PART_NUMBER = "17"

Here is the complete do_build log
log.do_compile.txt

[madisongh]

From the log file, it looks like your custom GPIO config file wasn't present when it was trying to build the capsule payload. How are you installing your custom files?