Lucio Andrés Illanes Albornoz (arab, vxp) 570129
#
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# set +o errexit -o noglob -o nounset is assumed.
Lucio Andrés Illanes Albornoz (arab, vxp) 570129
#
Lucio Andrés Illanes Albornoz (arab, vxp) 570129
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#
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# exp_pkg_env_defaults() - set package variable defaults for single named package
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# @_build_steps_default:	list of default build steps
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# @_pkg_name:			single package name
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# @_workdir:			pathname to build-specific temporary directory
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#
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# Return:			zero (0) on success, non-zero (>0) on failure
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#
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exp_pkg_env_defaults() {
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	local _build_steps_default="${1}" _pkg_name="${2}" _workdir="${3}";
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	: ${PKG_NAME:="${_pkg_name}"};
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	: ${MIDIPIX_BUILD_PWD:="$(pwd)"};
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	: ${PKG_BASE_DIR:="${_workdir}/${_pkg_name}-${PKG_BUILD_TYPE}-${PKG_TARGET}"};
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	if [ -n "${PKG_BUILD_STEPS_DISABLE:-}" ]; then
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		: ${PKG_BUILD_STEPS:="$(rtl_lfilter "${_build_steps_default}" "${PKG_BUILD_STEPS_DISABLE:-}")"};
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	else
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		: ${PKG_BUILD_STEPS:="${_build_steps_default}"};
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	fi;
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	if [ -n "${PKG_URL:-}" ]; then
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		: ${PKG_FNAME:="${PKG_URL##*/}"};
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	fi;
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	if [ -z "${PKG_SUBDIR:-}" ]; then
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		if [ -n "${PKG_URLS_GIT:-}" ]\
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		&& [ -n "${PKG_FNAME:-}" ]; then
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			rtl_log_msg fatalexit "Error: \${PKG_SUBDIR} must be specified given both \${PKG_FNAME} and \${PKG_URLS_GIT}.";
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		elif [ -n "${PKG_URLS_GIT:-}" ]; then
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			PKG_SUBDIR="${PKG_URLS_GIT%%=*}";
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		else case "${PKG_FNAME:-}" in
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		*.t*)	PKG_SUBDIR="${PKG_FNAME%%.t*}"; ;;
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		*)	PKG_SUBDIR="${_pkg_name}"; ;;
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		esac; fi;
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	fi;
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	if [ -z "${PKG_BUILD_DIR:-}" ]; then
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		case "${PKG_IN_TREE:-0}" in
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		0) PKG_BUILD_DIR="obj"; ;;
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		1) PKG_BUILD_DIR="${PKG_SUBDIR}"; ;;
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		esac;
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	fi;
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	PKG_BUILD_DIR="${PKG_BASE_DIR}/${PKG_BUILD_DIR}";
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	PKG_CONFIGURE="${PKG_BASE_DIR}/${PKG_CONFIGURE:-${PKG_SUBDIR}/configure}";
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	PKG_DESTDIR="${PKG_BASE_DIR}/${PKG_DESTDIR:-destdir}";
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	PKG_DESTDIR_HOST="${PKG_BASE_DIR}/${PKG_DESTDIR_HOST:-destdir_host}";
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};
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#
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# exp_pkg_env_set() - set package variables for single named package
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# @_build_vars_default:	list of default build variables
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# @_group_name:		build group name
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# @_nounset:		don't clear package variable namespace
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# @_pkg_name:		single package name
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#
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# Sets package variables from either defaults, defaults specific to build type,
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# build group, package to inherit from if any, or package for a single named
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# package, exports variables optionally named in ${PKG_ENV_VARS_EXTRA}, and
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# clears the package variable namespace.
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#
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# Return:		zero (0) on success, non-zero (>0) on failure
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#
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exp_pkg_env_set() {
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	local	_build_vars_default="${1}" _group_name="${2}" _nounset="${3}"		\
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		_pkg_name="${4}" _cmd_name="" _var_prefixes="" _vars_set=""		\
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		_vname="" IFS IFS0;
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	rtl_set_vars _vars_set BUILD_TYPE "DEFAULT ${_group_name} PKG_${_pkg_name}";
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	rtl_set_vars _vars_set INHERIT_FROM "PKG_${_pkg_name}";
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	_var_prefixes="$(rtl_toupper "DEFAULT DEFAULT_${PKG_BUILD_TYPE} ${_group_name}")";
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	for _vname in $(rtl_lfilter "${_build_vars_default}" BUILD_TYPE); do
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		if [ -n "${PKG_INHERIT_FROM:-}" ]; then
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			rtl_set_vars _vars_set "${_vname}"				\
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				"$(rtl_lconcat "${_var_prefixes}"			\
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				"$(rtl_toupper "PKG_${PKG_INHERIT_FROM} PKG_${PKG_INHERIT_FROM}_${BUILD_KIND} PKG_${_pkg_name} PKG_${_pkg_name}_${BUILD_KIND}")")";
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		else
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			rtl_set_vars _vars_set "${_vname}"				\
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				"$(rtl_lconcat "${_var_prefixes}"			\
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				"$(rtl_toupper "PKG_${_pkg_name} PKG_${_pkg_name}_${BUILD_KIND}")")";
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		fi;
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	done;
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	IFS0="${IFS:- }"; IFS=":"; for _vname in ${PKG_ENV_VARS_EXTRA:-}; do
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		export "${_vname}";
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	done; IFS="${IFS0}";
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	if [ "${_nounset:-0}" -eq 0 ]; then
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		rtl_unset_vars $(rtl_lfilter						\
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			"$(set | sed -ne '/^PKG_[^=]*=/s/=.*$//p' | paste -s -d " ")"	\
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			"${_vars_set}");
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	fi;
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	for _vname in AR CC CXX PKG_CONFIG RANLIB; do
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		if eval [ '"${PKG_'"${_vname}"':+1}"' = 1 ]\
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		&& eval [ '"${PKG_'"${_vname}"'#/}"' = '"${_cmd_name:=${PKG_'"${_vname}"'}}"' ]; then
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			eval PKG_${_vname}='$(which "${_cmd_name}")';
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		fi; _cmd_name="";
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	done;
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};
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#
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# ex_pkg_env() - set package variables for single named package
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# @_build_steps_default:	list of default build steps
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# @_build_vars_default:		list of default build variables
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# @_group_name:			build group name
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# @_nounset:			don't clear package variable namespace
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# @_pkg_name:			single package name
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# @_restart_at:			optional comma-separated list of build steps at which to rebuild or ALL or LAST
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# @_workdir:			pathname to build-specific temporary directory
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#
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# Return:			zero (0) on success, non-zero (>0) on failure
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#
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ex_pkg_env() {
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	local	_build_steps_default="${1}" _build_vars_default="${2}" _group_name="${3}"	\
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		_nounset="${4}" _pkg_name="${5}" _restart_at="${6}" _workdir="${7}"		\
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		_inherit_from="" _vars_file="" _vname="";
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	if _inherit_from="$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_INHERIT_FROM")"\
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	&& [ "${#_inherit_from}" -gt 0 ]; then
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		_vars_file="$(rtl_get_var_unsafe -u "PKG_${_inherit_from}_VARS_FILE")";
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	else
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		_vars_file="$(rtl_get_var_unsafe -u "PKG_${_pkg_name}_VARS_FILE")";
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	fi;
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	if [ "${#_vars_file}" -eq 0 ]; then
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		_vars_file="vars/${_pkg_name}.vars";
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	fi;
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	rtl_fileop source_opt "${_vars_file}" "${_group_name}/${_pkg_name}.${_group_name}";
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	if ! exp_pkg_env_set "${_build_vars_default}" "${_group_name}" "${_nounset}" "${_pkg_name}"\
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	|| ! exp_pkg_env_defaults "${_build_steps_default}" "${_pkg_name}" "${_workdir}"; then
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		return 1;
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	fi;
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};
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#
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# ex_pkg_state_set() - update build step status for single named package
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# @_pkg_name:		single package name
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# @_build_step:		build step set status of
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# [@${@}]:		optional list of build steps to invalidate status of
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#
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# Return:		zero (0) on success, non-zero (>0) on failure
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#
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ex_pkg_state_set() {
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	rtl_state_set "${_workdir}" "${@}";
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};
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#
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# ex_pkg_state_test() - test build step status of single named package
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# @_pkg_name:		single package name
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# @_build_step:		build step to test status of
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# @_restart_at:		optional comma-separated list of build steps at which to rebuild or ALL or LAST
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#
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# Return:		zero (0) on success, non-zero (>0) on failure
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#
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ex_pkg_state_test() {
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	rtl_state_test "${_workdir}" "${@}";
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};
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Lucio Andrés Illanes Albornoz (arab, vxp) 570129
# vim:filetype=sh