Bug in Configure

[Alex Murphy]

Hello !!! 
im build samba 3.0 pre 2 (CVS), execute ./configure :


.....
configure: WARNING: Active Directory cannot be supported without krb5.h
configure: WARNING: linux/quota.h: present but cannot be compiled
configure: WARNING: linux/quota.h: check for missing prerequisite headers?
configure: WARNING: linux/quota.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to bug-autoconf at gnu.org. ##
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING: xfs/xfs_fs.h: present but cannot be compiled
configure: WARNING: xfs/xfs_fs.h: check for missing prerequisite headers?
configure: WARNING: xfs/xfs_fs.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to bug-autoconf at gnu.org. ##
configure: WARNING:     ## ------------------------------------ ##
.........
what is it ???

Very senks,Alexey.