#!/bin/bash

#############################################################################

# Copyright (c) 2011 Novell, Inc.

# Copyright (c) 2012-2022 SUSE LLC

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of version 2 of the GNU General Public License as

# published by the Free Software Foundation.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.   See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, contact https://www.suse.com/source-code/

#

#############################################################################

# If make fails, check if it happened due to a staging driver and disable it.

# That way, staging does not spoil automatic package building and we also

# do not need to worry about forgetting to reenable manually disabled drivers.

if test -L source; then

	source="source"

else

	source="."

fi

if test -f ${source}/scripts/kconfig/Makefile && \

   grep -q syncconfig ${source}/scripts/kconfig/Makefile; then

    syncconfig="syncconfig"

else

    syncconfig="silentoldconfig"

fi

makefile="$source/drivers/staging/Makefile"

skipped_options=staging-skipped-options

logfile=$1

if test -z "$logfile"; then

	echo "Usage: $0 logfile" >&2

	exit 1

fi

if ! test -f "$logfile"; then

	echo "$logfile not found" >&2

	exit 1

fi

# safety precaution

if test "0$(wc -l "$skipped_options" 2>/dev/null)" -gt 20; then

	echo "Possible loop detected in $0, exiting after 20 attempts" >&2

	exit 1

fi

# find out if the error happened in drivers/staging

dir=$(sed -rn 's@.*/drivers/staging/([^/]*)/.*: error: .*@\1@p; T; q' "$logfile")

if test -z "$dir"; then

	exit 1

else

	echo "Build failed due to drivers/staging/$dir"

fi

option=$(sed -n 's/obj-\$(\(.*\))[[:space:]]*+=[[:space:]]*'"$dir"'\//\1/p' "$makefile")

if test -z "$option"; then

	echo "Cannot determine config option to skip drivers/staging/$dir" >&2

	exit 1

fi

# we need to be carefull not to loop endlessly

if grep -qsFx "$option" "$skipped_options"; then

	echo "$option has already been disabled, but drivers/staging/$dir is still failing" >&2

	exit 1

fi

echo "Trying to disable $option"

"$source/scripts/config" --disable "$option"

if ! make $syncconfig $MAKE_ARGS || grep "^$option" .config; then

	echo "Could not disable $option" >&2

	exit 1

fi

echo "$option" >>"$skipped_options"

exit 0