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#
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# Copyright (c) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 LucĂ­a Andrea Illanes Albornoz <lucia@luciaillanes.de>
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# set +o errexit -o noglob -o nounset is assumed.
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#
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# Package {configure,make} command execution
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#
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#
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# ex_rtl_configure() - run configure script
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# @_ar:				ar(1) command name or pathname
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# @_cc:				C compiler command name or pathname
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# @_configure:			configure script command name or pathname
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# @_cxx:			C++ compiler command name or pathname
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# @_ld:				ld(1) command name or pathname
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# @_libtool:			libtool(1) command name or pathname or "none"
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# @_pkg_config:			pkg-config(1) command name or pathname
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# @_python:			python command name or pathname
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# @_ranlib:			ranlib(1) command name or pathname
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# @--:				(ignored)
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# @_flags:			configure script flags as a whitespace-separated list
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# @_flags_extra:		extra configure script flags as a whitespace-separated likst
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# @_flags_list:			configure script flags as a :-separated list
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# @_flags_extra_list:		extra configure script flags as a :-separated list
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# @--:				(ignored)
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# @_cflags:			$CFLAGS
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# @_cflags_extra:		extra $CFLAGS
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# @_cppflags:			$CPPFLAGS
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# @_cppflags_extra:		extra $CPPFLAGS
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# @_cxxflags:			$CXXFLAGS
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# @_cxxflags_extra:		extra $CXXFLAGS
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# @_ldflags:			$LDFLAGS
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# @_ldflags_extra:		extra $LDFLAGS
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# @_pkg_config_libdir:		pkg-config(1) search directory
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#
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# Returns:			zero (0) on success, non-zero (>0) on failure
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#
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ex_rtl_configure() {
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	local	_erc_ar="${1}" _erc_cc="${2}" _erc_configure="${3}" _erc_cxx="${4}" _erc_ld="${5}"	\
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		_erc_libtool="${6}" _erc_pkg_config="${7}" _erc_python="${8}" _erc_ranlib="${9}"	\
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		_erc_ignored="${10}"									\
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		_erc_flags="${11}" _erc_flags_extra="${12}"						\
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		_erc_flags_list="${13}" _erc_flags_extra_list="${14}"					\
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		_erc_ignored="${15}"									\
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		_erc_cflags="${16}" _erc_cflags_extra="${17}" _erc_cppflags="${18}"			\
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		_erc_cppflags_extra="${19}" _erc_cxxflags="${20}" _erc_cxxflags_extra="${21}"	\
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		_erc_ldflags="${22}" _erc_ldflags_extra="${23}" _erc_pkg_config_libdir="${24}"	\
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		_erc_rc=0;
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	case "${_erc_libtool:-}" in
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	none) _erc_libtool=""; ;;
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	esac;
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	[ "${_erc_cflags_extra:+1}" = 1 ] && _erc_cflags="${_erc_cflags:+${_erc_cflags} }${_erc_cflags_extra}";
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	[ "${_erc_cppflags_extra:+1}" = 1 ] && _erc_cppflags="${_erc_cppflags:+${_erc_cppflags} }${_erc_cppflags_extra}";
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	[ "${_erc_cxxflags_extra:+1}" = 1 ] && _erc_cxxflags="${_erc_cxxflags:+${_erc_cxxflags} }${_erc_cxxflags_extra}";
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	[ "${_erc_ldflags_extra:+1}" = 1 ] && _erc_ldflags="${_erc_ldflags:+${_erc_ldflags} }${_erc_ldflags_extra}";
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(
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	if [ "${_erc_libtool:+1}" = 1 ]; then
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		export MAKE="make LIBTOOL=${_erc_libtool}";
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	fi;
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	[ "${_erc_ar:+1}" = 1 ] && export AR="${_erc_ar}";
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	[ "${_erc_cc:+1}" = 1 ] && export CC="${_erc_cc}";
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	[ "${_erc_cxx:+1}" = 1 ] && export CXX="${_erc_cxx}";
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	[ "${_erc_ld:+1}" = 1 ] && export LD="${_erc_ld}";
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	[ "${_erc_libtool:+1}" = 1 ] && export LIBTOOL="${_erc_libtool}";
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	[ "${_erc_pkg_config:+1}" = 1 ] && export PKG_CONFIG="${_erc_pkg_config}";
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	[ "${_erc_python:+1}" = 1 ] && export PYTHON="${_erc_python}";
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	[ "${_erc_ranlib:+1}" = 1 ] && export RANLIB="${_erc_ranlib}";
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	[ "${_erc_cflags:+1}" = 1 ] && export CFLAGS="${_erc_cflags}";
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	[ "${_erc_cppflags:+1}" = 1 ] && export CPPFLAGS="${_erc_cppflags}";
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	[ "${_erc_cxxflags:+1}" = 1 ] && export CXXFLAGS="${_erc_cxxflags}";
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	[ "${_erc_ldflags:+1}" = 1 ] && export LDFLAGS="${_erc_ldflags}";
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	[ "${_erc_pkg_config_libdir:+1}" = 1 ] && export PKG_CONFIG_LIBDIR="${_erc_pkg_config_libdir}";
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	if [ "${_erc_flags_list:+1}" = 1 ]; then
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		rtl_run_cmdlineV ":" "${_erc_configure}"	\
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			"${_erc_flags_list}"			\
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			"${_erc_flags_extra_list:-}"		\
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			;
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		exit "${?}";
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	elif [ "${_erc_flags_extra_list:+1}" = 1 ]; then
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		rtl_run_cmdlineV ":" "${_erc_configure}"	\
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			${_erc_flags:-}				\
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			"${_erc_flags_extra_list:-}"		\
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			;
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		exit "${?}";
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	else
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		rtl_run_cmdlineV ":" "${_erc_configure}"	\
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			${_erc_flags:-}				\
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			${_erc_flags_extra:-}			\
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			;
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		exit "${?}";
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	fi;
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);
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	_erc_rc="${?}";
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	return "${_erc_rc}";
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};
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#
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# ex_rtl_configure_cmake() - run configure script
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# @_ar:				ar(1) command name or pathname
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# @_cc:				C compiler command name or pathname
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# @_ccache:			ccache(1) command name or pathname or ""
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# @_cmake:			CMake command name or pathname
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# @_cxx:			C++ compiler command name or pathname
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# @_ld:				ld(1) command name or pathname
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# @_pkg_config:			pkg-config(1) command name or pathname
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# @_python:			python command name or pathname
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# @_ranlib:			ranlib(1) command name or pathname
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# @--:				(ignored)
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# @_build_kind:			build kind (Debug, Release)
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# @_build_type:			CMake build type (host, cross, native)
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# @_cmake_args:			additional CMake arguments as a whitespace-separated list
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# @_cmake_args_extra:		additional CMake extra arguments as a whitespace-separated likst
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# @_prefix:			build prefix pathname
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# @_subdir:			CMake build directory pathname
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# @_system_name:		CMake system name
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# @_system_processor:		CMake system processor
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# @--:				(ignored)
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# @_cflags:			$CFLAGS
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# @_cflags_extra:		extra $CFLAGS
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# @_cppflags:			$CPPFLAGS
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# @_cppflags_extra:		extra $CPPFLAGS
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# @_cxxflags:			$CXXFLAGS
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# @_cxxflags_extra:		extra $CXXFLAGS
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# @_ldflags:			$LDFLAGS
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# @_ldflags_extra:		extra $LDFLAGS
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# @_pkg_config_libdir:		pkg-config(1) search directory
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#
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# Returns:			zero (0) on success, non-zero (>0) on failure
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#
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ex_rtl_configure_cmake() {
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	local	_ercc_ar="${1}" _ercc_cc="${2}" _ercc_ccache="${3}" _ercc_cmake="${4}"			\
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		_ercc_cxx="${5}" _ercc_ld="${6}" _ercc_pkg_config="${7}" _ercc_python="${8}"		\
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		_ercc_ranlib="${9}"									\
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		_ercc_ignored="${10}"									\
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		_ercc_build_kind="${11}" _ercc_build_type="${12}"					\
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		_ercc_cmake_args="${13}" _ercc_cmake_args_extra="${14}"					\
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		_ercc_prefix="${15}" _ercc_subdir="${16}"						\
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		_ercc_system_name="${17}" _ercc_system_processor="${18}"				\
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		_ercc_ignored="${19}"									\
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		_ercc_cflags="${20}" _ercc_cflags_extra="${21}" _ercc_cppflags="${22}"			\
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		_ercc_cppflags_extra="${23}" _ercc_cxxflags="${24}" _ercc_cxxflags_extra="${25}"	\
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		_ercc_ldflags="${26}" _ercc_ldflags_extra="${27}" _ercc_pkg_config_libdir="${28}"	\
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		_ercc_cmd_name="" _ercc_cmake_args_auto="" _ercc_rc=0 _ercc_vname="" _ercc_vval=""
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	[ "${_ercc_cflags_extra:+1}" = 1 ] && _ercc_cflags="${_ercc_cflags:+${_ercc_cflags} }${_ercc_cflags_extra}";
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	[ "${_ercc_cppflags_extra:+1}" = 1 ] && _ercc_cppflags="${_ercc_cppflags:+${_ercc_cppflags} }${_ercc_cppflags_extra}";
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	[ "${_ercc_cxxflags_extra:+1}" = 1 ] && _ercc_cxxflags="${_ercc_cxxflags:+${_ercc_cxxflags} }${_ercc_cxxflags_extra}";
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	[ "${_ercc_ldflags_extra:+1}" = 1 ] && _ercc_ldflags="${_ercc_ldflags:+${_ercc_ldflags} }${_ercc_ldflags_extra}";
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(
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	[ "${_ercc_pkg_config:+1}" = 1 ] && export PKG_CONFIG="${_ercc_pkg_config}";
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	[ "${_ercc_pkg_config_libdir:+1}" = 1 ] && export PKG_CONFIG_LIBDIR="${_ercc_pkg_config_libdir}";
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	[ "${_ercc_python:+1}" = 1 ] && export PYTHON="${_ercc_python}";
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	for _ercc_vname in ar cc cxx ld pkg_config ranlib; do
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		case "${_ercc_vname}" in
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		cc|cxx)
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			_ercc_vname="_ercc_${_ercc_vname}";
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			if [ "${_ercc_ccache:+1}" = 1 ]; then
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				eval ${_ercc_vname}="\${${_ercc_vname}#${_ercc_ccache} }";
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			fi;
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			;;
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		*)
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			_ercc_vname="_ercc_${_ercc_vname}";
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			;;
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		esac;
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		if eval [ '"${'"${_ercc_vname}"':+1}"' = 1 ]\
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		&& eval [ '"${'"${_ercc_vname}"'#/}"' = '"${'"${_ercc_vname}"'}"' ]; then
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			eval _ercc_cmd_name="\${${_ercc_vname}% *}";
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			eval _ercc_vval="\${${_ercc_vname}#* }";
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			eval ${_ercc_vname}='$(which "${_ercc_cmd_name}")' || return 1;
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		fi;
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	done;
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_AR=${_ercc_ar}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_BUILD_TYPE=${_ercc_build_kind}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_C_COMPILER=${_ercc_cc}" "|";
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	if [ "${_ercc_ccache:+1}" = 1 ]; then
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		rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_C_COMPILER_LAUNCHER=${_ercc_ccache}" "|";
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	fi;
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_C_FLAGS=${_ercc_cflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_COMMAND=${_ercc_cmake}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_CPP_FLAGS=${_ercc_cppflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_CXX_COMPILER=${_ercc_cxx}" "|";
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	if [ "${_ercc_ccache:+1}" = 1 ]; then
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		rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_CXX_COMPILER_LAUNCHER=${_ercc_ccache}" "|";
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	fi;
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_CXX_FLAGS=${_ercc_cxxflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_EXE_LINKER_FLAGS=${_ercc_ldflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_FIND_ROOT_PATH=${_ercc_prefix}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_INSTALL_PREFIX=" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_LINKER=${_ercc_ld}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_MODULE_LINKER_FLAGS=${_ercc_ldflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_RANLIB=${_ercc_ranlib}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_SHARED_LINKER_FLAGS=${_ercc_ldflags}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_SYSTEM_PROCESSOR=${_ercc_system_processor}" "|";
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	rtl_lconcat \$_ercc_cmake_args_auto "-DPKG_CONFIG_EXECUTABLE=${_ercc_pkg_config}" "|";
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	case "${_ercc_build_type}" in
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	native)
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		rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_SYSROOT=${_ercc_prefix}" "|";
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		rtl_lconcat \$_ercc_cmake_args_auto "-DCMAKE_SYSTEM_NAME=${_ercc_system_name}" "|";
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		;;
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	esac;
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	rtl_llift \$_ercc_cmake_args " 
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" "|";
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	rtl_llift \$_ercc_cmake_args_extra " 
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" "|";
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	rtl_run_cmdlineV "|" "${_ercc_cmake}"	\
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		"${_ercc_cmake_args_auto}"	\
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		${_ercc_cmake_args:-}		\
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		${_ercc_cmake_args_extra:-}	\
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		"${_ercc_subdir}";
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	exit "${?}";
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);
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	_ercc_rc="${?}";
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	return "${_ercc_rc}";
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};
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#
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# ex_rtl_configure_prepare() - prepare configure script for running
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# @_build_type:			build type (host, native)
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# @_builddir:			build directory pathname
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# @_config_cache:		optional configuration cache directives
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# @_config_cache_local:		optional local configuration cache directives
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# @_config_cache_extra:		optional extra configuration cache directives
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# @_config_guess_fname:		config.guess file pathname
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# @_config_sub_global_fname:	global config.sub file pathname
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# @_copy_config_guess:		copy config.guess (copy) or keep local config.guess (keep)
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# @_force_autoreconf:		1 to force reconfiguration if already configured, 0 otherwise
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# @_subdir:			subdirectory pathname
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# @_pkg_config:			pkg-config(1) command name or pathname
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# @_pkg_config_libdir:		pkg-config(1) search directory
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# @_prefix:			prefix pathname
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#
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# Returns:			zero (0) on success, non-zero (>0) on failure
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#
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ex_rtl_configure_prepare() {
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	local	_ercp_build_type="${1}" _ercp_builddir="${2}" _ercp_config_cache="${3}"		\
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		_ercp_config_cache_local="${4}" _ercp_config_cache_extra="${5}"			\
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		_ercp_config_guess_fname="${6}" _ercp_config_sub_global_fname="${7}"		\
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		_ercp_copy_config_guess=="${8}" _ercp_force_autoreconf="${9}"			\
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		_ercp_subdir="${10}" _ercp_pkg_config="${11}" _ercp_pkg_config_libdir="${12}"	\
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		_ercp_prefix="${13}";
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	if rtl_exists_any "${_ercp_subdir}"	\
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			"configure.ac"		\
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			"configure.in"		\
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			"configure";
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	then
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		rtl_export_vars							\
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			PKG_CONFIG		"${_ercp_pkg_config}"		\
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			PKG_CONFIG_LIBDIR	"${_ercp_pkg_config_libdir}";
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		if [ "${_ercp_force_autoreconf:-0}" -eq 1 ]\
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		&& ! (cd "${_ercp_subdir}" && autoreconf -fiv); then
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			return 1;
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		fi;
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		if [ -e "${_ercp_subdir}/configure.ac" ]\
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		&& [ ! -e "${_ercp_subdir}/configure" ]; then
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			for _ercp_fname in bootstrap bootstrap.sh autogen.sh; do
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				if [ -e "${_ercp_subdir}/${_ercp_fname}" ]; then
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					for _ercp_subdir_tgt in 			\
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							"${_ercp_subdir}/build-aux"	\
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							"${_ercp_subdir}";
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					do	if [ -e "${_ercp_subdir_tgt}" ]; then
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							if ! rtl_fileop install -m 0700				\
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									"${_ercp_config_sub_global_fname}"	\
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									"${_ercp_subdir_tgt}/config.sub"; then
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								return 1;
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							fi;
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							if [ "${_ercp_copy_config_guess}" = "copy" ]; then
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								if ! rtl_fileop install -m 0700			\
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										"${_ercp_config_guess_fname}"	\
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										"${_ercp_subdir_tgt}/config.guess"; then
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									return 1;
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								else
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									break;
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								fi;
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							fi;
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						fi;
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					done;
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					if ! (rtl_fileop cd "${_ercp_subdir}" &&	\
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							/bin/sh "${_ercp_fname}"); then
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						return 1;
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					else
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						break;
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					fi;
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				fi;
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			done;
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			if ! (rtl_fileop cd "${_ercp_subdir}" && autoconf); then
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				return 1;
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			fi;
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		fi;
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		for _ercp_fname in $(find "${_ercp_subdir}" -name config.sub); do
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			if ! rtl_fileop mv "${_ercp_fname}" "${_ercp_fname}.orig"\
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			|| ! rtl_fileop install -m 0700 "${_ercp_config_sub_global_fname}" "${_ercp_fname}"; then
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				return 1;
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			fi;
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		done;
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		if [ "${_ercp_copy_config_guess}" = "copy" ]; then
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			for _ercp_fname in $(find "${_ercp_subdir}" -name config.guess); do
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				if ! rtl_fileop mv "${_ercp_fname}" "${_ercp_fname}.orig"\
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				|| ! rtl_fileop install -m 0700 "${_ercp_config_guess_fname}" "${_ercp_fname}"; then
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					return 1;
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				fi;
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			done;
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		fi;
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		if [ "${_ercp_build_type}" != host ]; then
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			if ! rtl_fileop touch "${_ercp_builddir}/config.cache"; then
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				return 1;
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			else
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				for _ercp_config_cache in 			\
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						"${_ercp_config_cache:-}"	\
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						"${_ercp_config_cache_local:-}"	\
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						"${_ercp_config_cache_extra:-}";
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				do
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					if [ "${_ercp_config_cache:+1}" = 1 ]\
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					&& ! printf "%s\n" "${_ercp_config_cache}" |\
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							tr " " "\n" >> "${_ercp_builddir}/config.cache"; then
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						return 1;
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					fi;
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				done;
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				if ! sed -i"" "s,%PREFIX%,${_ercp_prefix},g" "${_ercp_builddir}/config.cache"; then
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					return 1;
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				fi;
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			fi;
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		fi;
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		rtl_export_vars -u						\
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			PKG_CONFIG		"${_ercp_pkg_config}"		\
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			PKG_CONFIG_LIBDIR	"${_ercp_pkg_config_libdir}";
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	fi;
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	return 0;
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};
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# vim:filetype=sh textwidth=0