I run this... (   cd /usr/src && sup -sdev && make build && make build )

cc -O -DLIBC_SCCS  -c /usr/ftp/usr/src/lib/libkvm/kvm_file.c
/usr/ftp/usr/src/lib/libkvm/kvm_file.c: In function `kvm_deadfiles':
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:83: storage size of `file' isn't known
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:84: storage size of `filehead' isn't known
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:98: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:103: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:104: sizeof applied to an incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:105: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:105: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:109: sizeof applied to an incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:111: sizeof applied to an incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c: In function `kvm_getfiles':
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:131: storage size of `filehead' isn't known
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:154: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:158: increment of pointer to unknown structure
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:159: dereferencing pointer to incomplete type
/usr/ftp/usr/src/lib/libkvm/kvm_file.c:178: sizeof applied to an incomplete type
*** Error code 1