$(if $(HOST_CONFIGURE_PARALLEL),+)(cd $(HOST_BUILD_DIR)/$(3); \
if [ -x configure ]; then \
$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_BUILD_DIR)/$(3)/ && \
- $(HOST_CONFIGURE_VARS) \
$(2) \
$(HOST_CONFIGURE_CMD) \
+ $(HOST_CONFIGURE_VARS) \
$(HOST_CONFIGURE_ARGS) \
$(1); \
fi \