for arg ; do

	case "$arg" in

		--no-complex )

			libc_no_complex=yes

			;;

		*)

			error_msg ${arg#}: "unsupported config argument."

			exit 2

	esac

done

cfgdefs_set_arch()

{

	if [ -n "$mb_arch" ]; then

		return 0

	fi

	case "$mb_cchost" in

		*-*-*-* )

			mb_arch=${mb_cchost%-*-*-*}

			;;

		*-*-* )

			mb_arch=${mb_cchost%-*-*}

			;;

		*-* )

			mb_arch=${mb_cchost%-*-*-*}

			;;

		* )

			mb_arch='unknown'

			;;

	esac

	if [ "$mb_os" = 'midipix' ]; then

		case "$mb_arch" in

			x86_64 )

				mb_arch='nt64'

				;;

			i[3-6]86 )

				mb_arch='nt32'

				;;

		esac

	fi

}

cfgdefs_detect_libc_version()

{

	mb_libc_verinfo=$(cat "$mb_source_dir/VERSION")

	case "$mb_libc_verinfo" in

		*.*.* )

			libc_ver=${mb_libc_verinfo}

			libc_major=${mb_libc_verinfo%.*.*}

			libc_micro=${mb_libc_verinfo#*.*.}

			libc_minor=${libc_ver#*.}

			libc_minor=${libc_minor%.*}

			;;

		* )

			error_msg "Could not properly parse $mb_source_dir/VERSION"

			exit 2

	esac

}

cfgdefs_set_libc_options()

{

	if [ -d $mb_project_dir/arch/$mb_arch ]; then

		port_dir='$(PROJECT_DIR)'

		arch_dir=$mb_project_dir

	else

		port_dir='$(SOURCE_DIR)'

		arch_dir=$mb_source_dir

	fi

	if [ -f $arch_dir/arch/$mb_arch/bits/syscall.h.in ]; then

		libc_syscall_arch='syscall-gen.tag'

	else

		libc_syscall_arch='syscall-copy.tag'

	fi

	if [ -f $mb_source_dir/arch/x86_64/atomic_arch.h ]; then

		libc_source_tree='-D__LIBC_MODERN_SOURCE_TREE'

	else

		libc_source_tree='-D__LIBC_LEGACY_SOURCE_TREE'

	fi

	if [ -f $arch_dir/arch/$mb_arch/bits/alltypes.sed ]; then

		alltypes_sed=$arch_dir/arch/$mb_arch/bits/alltypes.sed

	else

		alltypes_sed=build/alltypes.sed

	fi

	if [ _${libc_no_complex:-} = _yes ]; then

		libc_deps=

		libc_excl_files='$(filter ./src/complex/%, $(libc_all_files))'

	else

		libc_deps='-lgcc -lgcc_eh'

		libc_excl_files=

	fi

}

cfgdefs_set_libc_cflags()

{

	libc_td_tid_addr=

	mb_init_tls_src_file=$mb_source_dir/src/env/__init_tls.c

	[ -z $libc_td_tid_addr ] \

		&& grep '__syscall(SYS_set_tid_address, &td->tid)' $mb_init_tls_src_file > /dev/null \

			&& libc_td_tid_addr='-D__LIBC_TD_TID_ADDR_TID'

	[ -z $libc_td_tid_addr ] \

		&& grep '__syscall(SYS_set_tid_address, &td->join_futex)' $mb_init_tls_src_file > /dev/null \

			&& libc_td_tid_addr='-D__LIBC_TD_TID_ADDR_JOIN_FUTEX'

	[ -z $libc_td_tid_addr ] \

		&& grep '__syscall(SYS_set_tid_address, &td->detach_state)' $mb_init_tls_src_file > /dev/null \

			&& libc_td_tid_addr='-D__LIBC_TD_TID_ADDR_DETACH_STATE'

	[ -z $libc_td_tid_addr ] \

		&& grep '__syscall(SYS_set_tid_address, &__thread_list_lock)' $mb_init_tls_src_file > /dev/null \

			&& libc_td_tid_addr='-D__LIBC_TD_TID_ADDR_THREAD_LIST_LOCK'

	return 0

}

cfgdefs_output_custom_defs()

{

	sed \

			-e 's/@port_dir@/'"$port_dir"'/g'       \

			-e 's/@libc_ver@/'"$libc_ver"'/g'       \

			-e 's/@libc_major@/'"$libc_major"'/g'   \

			-e 's/@libc_minor@/'"$libc_minor"'/g'   \

			-e 's/@libc_micro@/'"$libc_micro"'/g'   \

			-e 's/@libc_deps@/'"$libc_deps"'/g'     \

			-e 's^@libc_excl_files@^'"$libc_excl_files"'^g'   \

			-e 's/@libc_source_tree@/'"$libc_source_tree"'/g'  \

			-e 's/@libc_syscall_arch@/'"$libc_syscall_arch"'/g' \

			-e 's/@libc_td_tid_addr@/'"$libc_td_tid_addr"'/g'    \

			-e 's!@alltypes_sed@!'"$alltypes_sed"'!g'             \

		"$mb_project_dir/project/config/cfgdefs.in"         \

	| sed -e 's/[ \t]*$//g'                                     \

			>> "$mb_pwd/cfgdefs.mk"

}

# arch

cfgdefs_set_arch

# libc version info

cfgdefs_detect_libc_version

# libc (variant-specific) options

cfgdefs_set_libc_options

# libc (variant-specific) cflags

cfgdefs_set_libc_cflags

# cfgdefs.in --> cfgdefs.mk

cfgdefs_output_custom_defs

# all done

return 0