Function conf_write_autoconf

util/kconfig/confdata.c:1228–1271

}

int conf_write_autoconf(int overwrite)
{
	struct symbol *sym;
	const char *autoconf_name = conf_get_autoconfig_name();
	int ret, i;

	if (!overwrite && is_present(autoconf_name))
		return 0;

	ret = conf_write_autoconf_cmd(autoconf_name);
	if (ret)
		return -1;

	if (conf_touch_deps())
		return 1;

	for_all_symbols(i, sym)
		sym_calc_value(sym);

	ret = __conf_write_autoconf(conf_get_autoheader_name(),
				    print_symbol_for_c,
				    &comment_style_c);
	if (ret)
		return ret;

	ret = __conf_write_autoconf(conf_get_rustccfg_name(),
				    print_symbol_for_rustccfg,
				    NULL);
	if (ret)
		return ret;

	/*
	 * Create include/config/auto.conf. This must be the last step because
	 * Kbuild has a dependency on auto.conf and this marks the successful
	 * completion of the previous steps.
	 */
	ret = __conf_write_autoconf(conf_get_autoconfig_name(),
				    print_symbol_for_autoconf,
				    &comment_style_pound);
	if (ret)
		return ret;

	return 0;
}

static bool conf_changed;
static void (*conf_changed_callback)(void);