FreeBSD 6.2 installation

[timipl]

Hello

I have installed Freebsd 6.2 and i will try install ispcp and when i execute command make then i get this error

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lr_syntax.c:19: error: conflicting types for 'readlink'
/usr/include/unistd.h:406: error: previous declaration of 'readlink' was here
lr_syntax.c:19: error: conflicting types for 'readlink'
/usr/include/unistd.h:406: error: previous declaration of 'readlink' was here
*** Error code 1
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I know that the problem is in unistd.h and lr_syntax.c between declaration but i can't solve this issue :/

My line 406 in unistd.h

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int readlink(const char *, char *, int);
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My line in lr_syntax.c

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ssize_t readlink(const char * __restrict, char * __restrict, size_t);
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Thank you for any help