U-Boot compilation fails with Error: You must add new CONFIG options using Kconfig

[FrankBau]

Thank you for providing this repo.

On a Linux 5.4.0-113-generic #127~18.04.1-Ubuntu, I do in an empty folder:

git clone -b st/2021.02 https://github.com/bootlin/buildroot.git
git clone -b st/2021.02 https://github.com/bootlin/buildroot-external-st.git
cd buildroot
make BR2_EXTERNAL=../buildroot-external-st st_stm32mp157c_dk2_defconfig
make

which fails with

>>> uboot v2020.10-stm32mp-r2 Building
...
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  LDS     u-boot.lds
Error: You must add new CONFIG options using Kconfig
The following new ad-hoc CONFIG options were detected:
CONFIG_FS_FAT

Please add these via Kconfig instead. Find a suitable Kconfig
file and add a 'config' or 'menuconfig' option.
Makefile:1037: recipe for target '.binman_stamp' failed

The same happened for st_stm32mp157c_dk2_demo_defconfig

Regards

Frank

[kmaincent]

Hello, weird, I just tried on our build server which is a Ubuntu 20.04 and it built it well. It seems to be a config error, but I don't know why. Are you sure you don't change anything?

[FrankBau]

Well, I found a debian server where uboot builds fine and try to find the diffs. Weird indeed. Frank

[FrankBau]

I retried, but the error persists. Tried to compare to the successfull build on that Debian server, but gave up. Could attach verbose build logs if that helps Regards Frank

[kmaincent]

Yes please do so, maybe I can find something relevant.

[FrankBau]

here is the log of a clean uboot build: buildlog.txt and a complete build starting in an empty folder: complete_buildlog.txt

[tpetazzoni]

Could you give more details about the version of the distribution with which it is failing? Are you able to reproduce in a clean Docker container for that distribution?

[FrankBau]

$ cat /etc/os-release 
NAME="Ubuntu"
VERSION="18.04.6 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.6 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic

it does not fail on a clean docker run -i -t ubuntu:18.04 /bin/bash container. So my failing Ubuntu 18.04 system is somehow "special".

[tpetazzoni]

It's going to be difficult to help without being able to reproduce. Are you perhaps able to narrow down what is the difference between the "clean" Docker container and your environment?

[FrankBau]

I'm fine with using another machine and you can close the issue as you like. Still don't understand what step produces the "Error: You must add new CONFIG options using Kconfig" or how I could reproduce that error from the command line.