yocto制作根文件系统第一步就不成，有没有大神帮解决一下啊

nari1234

yocto制作根文件系统第一步就不成，有没有大神帮解决一下啊？

bitbake fsl-image-core




WARNING: Host distribution "Ubuntu-16.04" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR:  OE-core's config sanity checker detected a potential misconfiguration.
    Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
    Following is the list of potential problems / advisories:

    Your gcc version is older than 4.5 or is not working properly.  Please verify you can build and link something that uses atomic operations, such as:
        __sync_bool_compare_and_swap (&atomic, 2, 3);
Fetcher failure for URL: 'https://eula-downloads.yoctoproject.org/index.php'. URL https://eula-downloads.yoctoproject.org/index.php doesn't work. Please ensure your network is configured correctly.