#!/bin/sh

{

#clear_env_with_except HOME PATH SHELL TERM USER;

unset AR ARFLAGS CC CFLAGS CXX CXXFLAGS LD LDFLAGS;

. ./build.vars; . ./build.subr;

check_path_vars PREFIX PREFIX_NATIVE WORKDIR;

check_prereqs git make openssl sed sort tar tr wget;

set_env_vars "" LANG LANGUAGE LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES LC_PAPER LC_NAME LC_ADDRESS \

LC_TELEPHONE LC_MEASUREMENT LC_IDENTIFICATION LC_ALL;

log_msg info "Build started by ${BUILD_USER:=${USER}}@${BUILD_HNAME:=$(hostname)} at ${BUILD_DATE:=$(date %Y-%m-%d-%H-%M-%S)}.";

#trap

(set -o errexit; mkdir -p ${PREFIX} ${WORKDIR});

BUILD_NFINI=${BUILD_NSKIP:=${BUILD_NFAIL:=${BUILD_NBUILT:=0}}};

for BUILD_LVL in 0 1 2 3; do

	for BUILD_SCRIPT_FNAME in ${BUILD_LVL}[0-9][0-9].*.build; do

		if [ -n "${DEBUG_SCRIPT}" ]\

		&& [ "x${DEBUG_SCRIPT}" != "x${BUILD_SCRIPT_FNAME}" ]; then

			continue;

		elif [ ! -f ${BUILD_SCRIPT_FNAME} ]; then

			continue;

		else

			unset BUILD_SCRIPT_RC; : $((BUILD_NBUILT+=1));

			log_msg info "Invoking build script \`${BUILD_SCRIPT_FNAME}'";

			(set -o errexit -- $(split . ${BUILD_SCRIPT_FNAME%.build});	\

			 SCRIPT_FNAME=${BUILD_SCRIPT_FNAME}; _pwd=$(pwd);		\

			 export CFLAGS="$(eval echo \${CFLAGS_LVL${BUILD_LVL}})";	\

			 export PREFIX_LVL="$(eval echo \${PREFIX_LVL${BUILD_LVL}})";	\

			 cd ${WORKDIR}; . ${_pwd}/build.subr;				\

			 [ -f ${_pwd}/${SCRIPT_FNAME%.build}.vars ] &&			\

			 	. ${_pwd}/${SCRIPT_FNAME%.build}.vars;			\

			 . ${_pwd}/${BUILD_SCRIPT_FNAME});

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

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

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

			212) log_msg info "Skipped build script \`${BUILD_SCRIPT_FNAME}' (already built.)";

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

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

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

			esac;

		fi;

	done;

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

		break;

	fi;

done;

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

if [ $(( ${BUILD_NFINI} + ${BUILD_NSKIP} )) -ge 0 ]\

&& [ ${BUILD_NFAIL} -eq 0 ]; then

	log_msg info "Building distribution tarball.";

	(cd ${PREFIX};

	DISTRIB_FNAME=midipix.${BUILD_USER}@${BUILD_HNAME}-${BUILD_DATE}.tar.bz2;

	rm_if_exists -m ${PREFIX_NATIVE##*/}/lib.bak; rm_if_exists ${DISTRIB_FNAME};

	tar -C ${PREFIX_NATIVE##*/}/lib -cpf - . |\

	tar -C ${PREFIX_NATIVE##*/}/lib.bak -xpf -;

	(cd native/lib &&

	 find . -maxdepth 1 -type l				\

		-exec sh -c 'dest=$(readlink -- "$0") && rm -- "$0" && ln -- "$dest" "$0"' {} \;);

	wait;

	find .	-maxdepth 2 -type d				\

		-not -path .					\

		-not -path ./${WORKDIR##*/}			\

		-not -path ./${WORKDIR##*/}/\*			\

		-not -path ./${PREFIX_NATIVE##*/}		\

		-not -path ./${PREFIX_NATIVE##*/}/lib.bak	|\

	tar -T - -cpf - | bzip2 -9c - > ${DISTRIB_FNAME}

	rm -rf ${PREFIX_NATIVE##*/}/lib;

	mv ${PREFIX_NATIVE##*/}/lib.bak ${PREFIX_NATIVE##*/}/lib); wait;

fi;

exit ${BUILD_SCRIPT_RC};

} 2>&1 | tee build.log;

# vim:filetype=sh