--with-quotas vs Quota support(in the kernel 2.x)?

[Hanz S Yoro]

can anyone tell me the difference of --with-quota and enabling (KERNEL)Quota Support to yes in the kernel.
1. Are they related or they individually refer to different configuration?
2. if --with-quotas is set while Quota support in kernel isn't ~and vice-versa~ will it still
be possible to set quotas for users or group? 

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