compiles all targets or a whitespace seperated list of targets

compile_all_boards.sh

#!/bin/bash

CPUS=9

function build {
	cat << EOF > .config
CONFIG_TARGET_${TARGET}=y
CONFIG_TARGET_MULTI_PROFILE=y
CONFIG_TARGET_ALL_PROFILES=y
CONFIG_TARGET_PER_DEVICE_ROOTFS=y
CONFIG_DEVEL=y
CONFIG_CCACHE=y
CONFIG_ALL_NONSHARED=y
EOF

	[ -n "${SUBTARGET}" ] && {
		echo "  ${SUBTARGET}"
		echo "CONFIG_TARGET_${TARGET}_${SUBTARGET}=y" >> .config
	}

	for EXTRAOPTION in ${EXTRAOPTIONS}; do
		echo "${EXTRAOPTION}" >> .config
	done

	make defconfig > /dev/null

	for EXTRAOPTION in ${EXTRAOPTIONS}; do
		grep -q "${EXTRAOPTION}" <(./scripts/diffconfig.sh) || {
			echo "   ${EXTRAOPTION} not found. Skipping."
			return
		}
	done

	make clean && make -j${CPUS} BUILD_LOG=1 IGNORE_ERRORS=1
}

if [ "$#" -ne 0 ]; then
	for TARGET in "$@"; do
		MAKEFILE="target/linux/${TARGET}/Makefile"
	
		[ ! -f "${MAKEFILE}" ] && {
			echo "TARGET ${TARGET} is unknown"
			exit
		}
		
		MAKEFILES="${MAKEFILES} ${MAKEFILE}"
	done
else
	MAKEFILES=$(grep -Li 'FEATURES.*broken' target/linux/*/Makefile)
fi

# enable logging
rm build.log
exec >  >(tee -a build.log)
exec 2> >(tee -a build.log >&2)

for MAKEFILE in ${MAKEFILES}; do
	SUBTARGET=""

	TARGET=$(grep "BOARD:=" "${MAKEFILE}")
	TARGET=${TARGET#BOARD:=}
	echo "${TARGET}"

	SUBTARGETS=$(grep 'SUBTARGETS:=' "${MAKEFILE}")
	if [ -z "${SUBTARGETS}" ]; then
		build
	else
		for SUBTARGET in ${SUBTARGETS#SUBTARGETS:=}; do
			build
		done
	fi
done