#!/bin/sh

# Copyright (c) 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>

#

#

# Clear the environment.

# Source subroutine scripts.

# Source the build variables file and its local overrides, if any.

# Process command line arguments.

for __ in subr/*.subr; do

	. ./${__};

done;

check_cpuinfo; source_vars; clear_env;

while [ ${#} -gt 0 ]; do

case ${1} in

-c)	export ARG_CLEAN=1; ;;

-n)	export ARG_DRYRUN=1 ARG_VERBOSE=1; ;;

-N)	export ARG_OFFLINE=1; ;;

-t*)	export ARG_TARBALL=1; [ "${1#-t.}" != "${1}" ] && TARBALL_SUFFIX=${1#-t.}; ;;

-v)	export ARG_VERBOSE=1; ;;

-x)	export ARG_XTRACE=1; set -o xtrace; ;;

-a)	[ -z "${2}" ] && exec cat etc/build.usage || export ARCH=${2}; shift; ;;

-b)	[ -z "${2}" ] && exec cat etc/build.usage || export BUILD=${2}; shift; ;;

-r)	if [ -z "${2}" ]; then

		exec cat build.usage;

	elif [ "${2%:*}" = "${2}" ]; then

		export ARG_RESTART=${2};

	else

		export ARG_RESTART=${2%:*} ARG_RESTART_AT=${2#*:};

	fi; shift; ;;

host_toolchain|native_toolchain|runtime|lib_packages|leaf_packages|devroot|world)

	export BUILD_TARGETS_META="${BUILD_TARGETS_META:+${BUILD_TARGETS_META} }${1}"; ;;

*=*)	set_var_unsafe "${1%%=*}" "${1#*=}"; ;;

*)	exec cat etc/build.usage; ;;

esac; shift;

done;

if [ -z "${BUILD_TARGETS_META}" ]; then

	BUILD_TARGETS_META=world;

fi;

#

# Check whether the pathnames in build.vars contain non-empty valid values.

# Check whether all prerequisite command names resolve.

# Check whether all prerequisite pathnames resolve.

# Check whether all prerequisite Perl modules exist.

# Clean ${PREFIX} if requested.

# Create directory hierarchy and usr -> . symlinks.

check_paths; clean_prefix; create_dirs;

init_build_log; init_build_progress_file;

{(init_build_vars;

log_msg info "Build started by ${BUILD_USER:=${USER}}@${BUILD_HNAME:=$(hostname)} at ${BUILD_DATE_START}.";

log_env_vars "build (global)" ${LOG_ENV_VARS};

for BUILD_TARGET_LC in $(subst_tgts ${BUILD_TARGETS_META}); do

	BUILD_TARGET=$(echo ${BUILD_TARGET_LC} | tr a-z A-Z);

	for BUILD_PACKAGE_LC in $(get_var_unsafe ${BUILD_TARGET}_PACKAGES); do

		BUILD_PACKAGE=$(echo ${BUILD_PACKAGE_LC} | tr a-z A-Z);

		if [ -n "${ARG_RESTART}" ]; then

			if ! match_list ${ARG_RESTART} , ${BUILD_PACKAGE_LC}; then

				if [ ${ARG_VERBOSE:-0} -eq 1 ]; then

					log_msg info "Skipped \`${BUILD_PACKAGE_LC}' (-r specified.)";

				fi;

				: $((BUILD_NSKIP+=1)); BUILD_SCRIPT_RC=0; continue;

			fi;

		elif is_build_script_done finish "${BUILD_PACKAGE_LC}"; then

			if [ ${ARG_VERBOSE:-0} -eq 1 ]; then

				log_msg info "Skipped \`${BUILD_PACKAGE_LC}' (already built.)";

			fi;

			: $((BUILD_NSKIP+=1)); BUILD_SCRIPT_RC=0; continue;

		fi;

		if [ -e scripts/${BUILD_PACKAGE_LC}.build ]; then

			BUILD_SCRIPT_FNAME=scripts/${BUILD_PACKAGE_LC}.build;

		else

			BUILD_SCRIPT_FNAME=scripts/pkg.build;

		fi;

		if [ ${ARG_VERBOSE:-0} -eq 1 ]; then

			log_msg info "Invoking build script \`${BUILD_SCRIPT_FNAME}'${ARG_RESTART:+ (forcibly)} for package \`${BUILD_PACKAGE_LC}'.";

		fi;

		(set -o errexit -o noglob;

		 export	MIDIPIX_BUILD_PWD=$(pwd)					\

			PKG_BUILD=${BUILD} PKG_TARGET=${TARGET}				\

			PKG_PREFIX=$(get_vars_unsafe ${BUILD_TARGET}_PREFIX		\

				PKG_${BUILD_PACKAGE%.*}_PREFIX)				\

			PREFIX PREFIX_CROSS PREFIX_MIDIPIX PREFIX_NATIVE PREFIX_ROOT;

		 cd ${WORKDIR}; source_scripts);

		BUILD_SCRIPT_RC=${?}; case ${BUILD_SCRIPT_RC} in

		0) log_msg succ "Finished \`${BUILD_PACKAGE_LC}' build.";

			: $((BUILD_NFINI+=1)); continue; ;;

		*) log_msg fail "Build failed in \`${BUILD_PACKAGE_LC}' (last return code ${BUILD_SCRIPT_RC}.).";

			: $((BUILD_NFAIL+=1)); break; ;;

		esac;

	done;

	if [ ${BUILD_SCRIPT_RC:-0} -ne 0 ]; then

		break;

	fi;

done;

do_strip; do_tarballs; fini_build_vars;

log_msg info "${BUILD_NFINI} finished, ${BUILD_NSKIP} skipped, and ${BUILD_NFAIL} failed builds in ${BUILD_NBUILT} build script(s).";

log_msg info "Build time: ${BUILD_TIMES_HOURS} hour(s), ${BUILD_TIMES_MINUTES} minute(s), and ${BUILD_TIMES_SECS} second(s).";

fini_build_progress_file;

exit ${BUILD_SCRIPT_RC})} 2>&1 | tee ${BUILD_LOG_FNAME} &

TEE_PID=${!};

trap "rm -f ${BUILD_STATUS_IN_PROGRESS_FNAME};	\

	log_msg fail \"Build aborted.\";	\

	echo kill ${TEE_PID};			\

	kill ${TEE_PID}" HUP INT TERM USR1 USR2;

wait;

# vim:filetype=sh