chkdefconfigs

#!/bin/bash -eu
#
# Check defconfigs
#

fail=0
for config in DEFCONFIGS/* ; do
	echo
	echo "-- Process ${config}"
	config=${config#*/}
	arch=${config%%-*}
	case "${arch}" in
		amd64)   kernarch="x86_64"  ; ccompile=""                       ;;
		arm64)   kernarch="arm64"   ; ccompile="aarch64-linux-gnu-"     ;;
		armhf)   kernarch="arm"     ; ccompile="arm-linux-gnueabihf-"   ;;
		ppc64el) kernarch="powerpc" ; ccompile="powerpc64le-linux-gnu-" ;;
		s390x)   kernarch="s390"    ; ccompile="s390x-linux-gnu-"       ;;
		riscv64) kernarch="riscv"   ; ccompile="riscv64-linux-gnu-"     ;;
		*)       echo "-- Invalid architecture: ${arch}" >&2 ; exit 1   ;;
	esac

	if ! [ -f CONFIGS/"${config}" ] ; then
		echo "-- No such file: CONFIGS/${config}" >&2
		exit 1
	fi

	rm -rf buildd
	mkdir buildd
	cp DEFCONFIGS/"${config}" buildd/.config
	ARCH=${kernarch} CROSS_COMPILE=${ccompile} \
		cranky chroot run -- make O=buildd olddefconfig

	diff buildd/.config CONFIGS/"${config}" > buildd/diff || true
	if [ -s buildd/diff ] ; then
		echo "-- Generated config file does not match CONFIGS/${config}" >&2
		echo "-- Begin of diff" >&2
		cat buildd/diff >&2
		echo "-- End of diff" >&2
		fail=$((fail + 1))
	else
		echo "-- Generated config file matches CONFIGS/${config}"
	fi
done

if [ ${fail} -ne 0 ] ; then
	echo
	echo "-- ${fail} config file check(s) failed" >&2
	exit 1
fi