#!/bin/bash

tree=
if [ "$1" ]; then
	tree=$1
	shift
fi

# shellcheck source=common.sh
. "$(dirname "$0")/common.sh"

set -e

bparent=$(dirname "$build_dir")

line=$(tail -n 1 "$SHA1_FILE")

# strip everything after the first tab character
stree=${line%%	*}
if [ "$tree" ]; then
	if [ "$tree" != "$stree" ]; then
		printf 'That is not the last tree merged (%s v %s)\n' "$tree" "$stree" 1>&2
		exit 1
	fi
else
	tree="$stree"
fi
obdir="$bparent/old/$tree"

cmd="/bin/sh"
if [ "$build_host" ]; then
	cmd="ssh root@$build_host unshare -n su $(id -u -n)"
fi

log_regex='/^[[:space:]]+$/d
/^[.[:digit:]]+user [.[:digit:]]+system [:.[:digit:]]+elapsed [[:digit:]]+%CPU \([[:digit:]]+avgtext\+[[:digit:]]+avgdata [[:digit:]]+maxresident\)k$/d
/^[[:digit:]]+inputs\+[[:digit:]]+outputs \([[:digit:]]+major\+[[:digit:]]+minor\)pagefaults [[:digit:]]+swaps$/d
/^Setup is [[:digit:]]+ bytes \(padded to [[:digit:]]+ bytes\)\.$/d
/^System is [[:digit:]]+ kB$/d
/^CRC [[:xdigit:]]+$/d
/^Kernel: arch\/x86\/boot\/bzImage is ready  \(#[[:digit:]]+\)$/d
s/^(WARNING: (modpost: )?(drivers\/built-in|vmlinux)\.o\(\.[^+]*\+0x)[[:xdigit:]]+(\): Section mismatch in reference from .*)$/\1XXXX\4/
/^Warning: Kernel ABI header at /d
/^[[:space:]]+PERF_VERSION = /d
s/^(Parsed description of) [[:digit:]]+ (helper function)/\1 X \2/
s/^[[:xdigit:]]+([[:space:]]+R_PPC64_(ADDR64|REL32)[[:space:]].*)$/XXX\1/'

$cmd <<-EOF

	echo Building on \$(hostname)

	echo \$PATH | grep -q "\$HOME/bin" || export PATH="\$HOME/bin:\$PATH"
	export LANG=C

	cd "$build_dir" || exit 1

	export CCACHE_DIR="$bparent/.ccache"
	export TMPDIR="$bparent/tmp"

	git reset --hard next || exit 1
	touch .scmversion || exit 1

	[ -d "$obdir" ] || mkdir -p "$obdir" || exit 1

	sanitise_log() {
		sed -E -e '$log_regex' | grep -vxFf $bparent/log-ignore
	}

	show_log() {
		arch=\$1
		conf=\$2
		log=\$3

		sep='======================================================================'

		echo "\$sep"
		echo " \$arch \$conf build OK - log follows"
		echo "\$sep"
		cat \$log
		b=\$(basename \$log)
		olen=0
		if [ -f $obdir/\$b ]; then
			olen=\$(sanitise_log <$obdir/\$b | wc -l)
		fi
		len=\$(sanitise_log <\$log | wc -l)
		if [ \$len -gt \$olen ]; then
			echo "\$sep"
			echo " log \$b increased number of lines"
			echo "\$sep"
			linux-next-notify "\$arch \$conf log got bigger"
			if [ -f $obdir/\$b ]; then
				diff -u $obdir/\$b \$log 2>&1 | less
			else
				diff -u /dev/null \$log 2>&1 | less
			fi
		fi
		if [ \$len -gt 0 ]; then
			(sanitise_log <\$log; cat $bparent/log-ignore ) |
				sort -u >$bparent/log-ignore.tmp
			mv $bparent/log-ignore.tmp $bparent/log-ignore
		fi
		mv \$log $obdir/\$b
	}

	echo Building: x86_64 allmodconfig
	d="$bparent/x86_64_allmodconfig"
	[ -d \$d ] || mkdir \$d || exit 1
	log_x86=\$d.log
	make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu- O=\$d -s allmodconfig || exit 1
	echo "Forking x86 build ..."
	/usr/bin/time make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu- O=\$d -j100 -O -s > \$log_x86 2>&1 &
	x86_64_pid=\$!

	echo Building: perf
	d="$bparent/perf"
	[ -d \$d ] || mkdir \$d || exit 1
	log_perf=\$d.log
	# the -Wno-psabi is to suppress
	#	note: the layout of aggregates containing vectors with 8-byte alignment has changed in GCC 5
	# warnings until at least gcc 12 when the warning will be removed
	/usr/bin/time make -C tools/perf -f Makefile.perf -s -O -j40 O=\$d EXTRA_CFLAGS=-Wno-psabi > \$log_perf 2>&1
	rc=\$?

	if [ \$rc -ne 0 ]; then
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		echo "ERROR: perf build failed - log follows"
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		cat \$log_perf
		kill \$x86_64_pid || true
		killall make
		rm .scmversion
		exit 1
	else
		show_log native perf \$log_perf
	fi

	echo Building: powerpc ppc64_defconfig
	d="$bparent/powerpc_ppc64_defconfig"
	[ -d \$d ] || mkdir \$d || exit 1
	log_ppc=\$d.log
	make ARCH=powerpc O=\$d -s ppc64_defconfig || exit 1
	/usr/bin/time make ARCH=powerpc O=\$d -j40 -O -s > \$log_ppc 2>&1
	rc=\$?

	if [ \$rc -ne 0 ]; then
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		echo "ERROR: powerpc ppc64_defconfig build failed - log follows"
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		cat \$log_ppc
		kill \$x86_64_pid || true
		killall make
		rm .scmversion
		exit 1
	else
		show_log powerpc ppc64_defconfig \$log_ppc
	fi

	echo Building: arm multi_v7_defconfig
	d="$bparent/arm_multi_v7_defconfig"
	[ -d \$d ] || mkdir \$d || exit 1
	log_arm=\$d.log
	make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- O=\$d -s multi_v7_defconfig || exit 1
	/usr/bin/time make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- O=\$d -j40 -O -s > \$log_arm 2>&1
	rc=\$?

	if [ \$rc -ne 0 ]; then
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		echo "ERROR: arm multi_v7_defconfig build failed - log follows"
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		cat \$log_arm
		kill \$x86_64_pid || true
		killall make
		rm .scmversion
		exit 1
	else
		show_log arm multi_v7_defconfig \$log_arm
	fi

	wait \$x86_64_pid
	rc=\$?

	if [ \$rc -ne 0 ]; then
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		echo "ERROR: x86_64 allmodconfig build failed - log follows"
		echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
		cat \$log_x86
		rm .scmversion
		exit 1
	else
		show_log x86_64 allmodconfig \$log_x86
	fi

	rm .scmversion
EOF