undefined symbols in kld

[Anurag Chaudhary]

hi
I hav made a kld. but it is not loading saying no such file or directory.
I traced down the problem and found that symbols usleep, memset, memcpy etc. 
which are part of libc and also declared in /usr/src/include directory.
someone please tell me how to link in these functions. urgent help is 
required

Thanx
Anurag

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